add-20211202

+build/*
\ No newline at end of file

+{
+    "files.associations": {
+        "*.ipp": "cpp",
+        "any": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "strstream": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "bitset": "cpp",
+        "cctype": "cpp",
+        "chrono": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "codecvt": "cpp",
+        "complex": "cpp",
+        "condition_variable": "cpp",
+        "csignal": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "map": "cpp",
+        "set": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "ratio": "cpp",
+        "regex": "cpp",
+        "source_location": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "slist": "cpp",
+        "fstream": "cpp",
+        "future": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "ostream": "cpp",
+        "shared_mutex": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "thread": "cpp",
+        "cinttypes": "cpp",
+        "typeindex": "cpp",
+        "typeinfo": "cpp",
+        "variant": "cpp",
+        "cfenv": "cpp"
+    }
+}
\ No newline at end of file

+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: g++ build active file",
+            "command": "/usr/bin/g++",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}/${fileBasenameNoExtension}"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "Task generated by Debugger."
+        }
+    ],
+    "version": "2.0.0"
+}
\ No newline at end of file

+CMAKE_MINIMUM_REQUIRED(VERSION 3.6 FATAL_ERROR)
+# set path to additional CMake modules
+SET(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
+SET(CMAKE_BUILD_TYPE Debug CACHE STRING "Build type" FORCE)
+
+#############################################################
+# Project and version
+SET(CPACK_PACKAGE_VERSION_MAJOR "3")
+SET(CPACK_PACKAGE_VERSION_MINOR "0")
+SET(CPACK_PACKAGE_VERSION_PATCH "0")
+SET(COMPLETE_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH})
+SET(RELEASE_NAME "Master")
+PROJECT(DMap VERSION ${COMPLETE_VERSION})
+
+# we default to Release build type
+if(NOT CMAKE_BUILD_TYPE)
+  SET(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
+endif()
+
+MESSAGE(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
+
+# Note the version no is Mmmpp for Major/minor/patch, 0-padded, thus '10100' for 1.1.0
+MATH(EXPR DMAP_VERSION_INT "${CPACK_PACKAGE_VERSION_MAJOR}*10000+${CPACK_PACKAGE_VERSION_MINOR}*100+${CPACK_PACKAGE_VERSION_PATCH}")
+MESSAGE(STATUS "DMAP version: ${COMPLETE_VERSION} ${RELEASE_NAME} (${DMAP_VERSION_INT})")
+
+SET (WITH_CORE TRUE CACHE BOOL "Determines whether DMap core should be built.")
+MARK_AS_ADVANCED(WITH_CORE)
+
+IF(WITH_CORE)
+
+  SET (WITH_BINDINGS FALSE CACHE BOOL "Determines whether python bindings should be built")
+  IF (WITH_BINDINGS)
+    # By default bindings will be installed only to DMap directory
+    # Someone might want to install it to python site-packages directory
+    # as otherwise user has to use PYTHONPATH environment variable to add
+    # DMap bindings to package search path
+    SET (BINDINGS_GLOBAL_INSTALL TRUE CACHE BOOL "Install bindings to global python directory? (might need root)")
+    SET (WITH_STAGED_PLUGINS FALSE CACHE BOOL "Stage-install core Python plugins to run from build directory? (utilities and console are always staged)")
+    SET (WITH_PY_COMPILE FALSE CACHE BOOL "Determines whether Python modules in staged or installed locations are byte-compiled")
+    ADD_DEFINITIONS(-DWITH_BINDINGS)
+  ENDIF (WITH_BINDINGS)
+
+  SET (WITH_SERVER TRUE CACHE BOOL "Determines whether DMap server should be built")
+  IF(WITH_SERVER)
+    SET (WITH_SERVER_PLUGINS ${WITH_BINDINGS} CACHE BOOL "Determines whether DMap server support for python plugins should be built")
+    IF(WITH_SERVER_PLUGINS AND NOT WITH_BINDINGS)
+      MESSAGE(FATAL_ERROR "Server plugins are not supported without python bindings. Enable WITH_BINDINGS or disable WITH_SERVER_PLUGINS")
+    ENDIF(WITH_SERVER_PLUGINS AND NOT WITH_BINDINGS)
+    IF(WITH_SERVER_PLUGINS)
+      SET(HAVE_SERVER_PYTHON_PLUGINS TRUE)
+    ENDIF(WITH_SERVER_PLUGINS)
+  ENDIF(WITH_SERVER)
+
+  # try to configure and build POSTGRESQL support
+  SET (WITH_POSTGRESQL TRUE CACHE BOOL "Determines whether POSTGRESQL support should be built")
+  IF (WITH_POSTGRESQL)
+    SET (POSTGRESQL_PREFIX "" CACHE PATH "Path to POSTGRESQL base directory")
+  ENDIF (WITH_POSTGRESQL)
+
+  #############################################################
+  # search for dependencies
+
+  # required
+  FIND_PACKAGE(Boost 1.57 REQUIRED COMPONENTS filesystem REQUIRED)
+  FIND_PACKAGE(Boost 1.57 COMPONENTS regex REQUIRED)
+  FIND_PACKAGE(Boost 1.57 COMPONENTS system REQUIRED)  
+  #FIND_PACKAGE(Proj)
+  #FIND_PACKAGE(GEOS)
+  #FIND_PACKAGE(GDAL)
+  #FIND_PACKAGE(Spatialindex REQUIRED)
+
+  # optional
+  IF (WITH_POSTGRESQL)
+    FIND_PACKAGE(Postgres) # PostgreSQL provider
+  ENDIF (WITH_POSTGRESQL)
+
+  #[[
+  IF (NOT PROJ_FOUND OR NOT GEOS_FOUND OR NOT GDAL_FOUND)
+    MESSAGE (SEND_ERROR "Some dependencies were not found! Proj: ${PROJ_FOUND}, Geos: ${GEOS_FOUND}, GDAL: ${GDAL_FOUND}")
+  ENDIF (NOT PROJ_FOUND OR NOT GEOS_FOUND OR NOT GDAL_FOUND)
+  ]]
+  IF (POSTGRES_FOUND)
+    SET (HAVE_POSTGRESQL TRUE)
+  ENDIF (POSTGRES_FOUND)
+
+ENDIF(WITH_CORE)
+
+#############################################################
+SET(CMAKE_CXX_STANDARD 14)
+SET(CMAKE_CXX_STANDARD_REQUIRED ON)
+# SET(CMAKE_CXX_EXTENSIONS OFF)
+#############################################################
+# platform specific stuff
+IF (WITH_CORE)
+  IF (WIN32)
+    ADD_DEFINITIONS(-DIS_WIN32)
+    SET (DEFAULT_LIB_SUBDIR     lib)
+    SET (DEFAULT_LIBEXEC_SUBDIR .)
+    SET (DEFAULT_DATA_SUBDIR    .)
+    SET (DEFAULT_PLUGIN_SUBDIR  plugins)
+    SET (DEFAULT_INCLUDE_SUBDIR include)
+    SET (DEFAULT_SERVER_MODULE_SUBDIR server)
+
+    IF (MSVC)
+      SET (DEFAULT_BIN_SUBDIR bin)
+      SET (DEFAULT_CGIBIN_SUBDIR bin)
+      # put all the build products into a single directory
+      # under build (doesn't affect install target) to make for
+      # easier debugging.
+
+      # Turn on defines for non standard maths stuff
+      ADD_DEFINITIONS(-D_USE_MATH_DEFINES)
+
+      # Turn off deprecation warnings
+      ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS)
+      ADD_DEFINITIONS(-D_CRT_NONSTDC_NO_WARNINGS)
+
+      IF (INSTALL_DEPS)
+        INSTALL(DIRECTORY ${INSTALL_DEPS} DESTINATION .)
+      ENDIF (INSTALL_DEPS)
+    ELSE(MSVC)
+      SET (DEFAULT_BIN_SUBDIR .)
+      SET (DEFAULT_CGIBIN_SUBDIR .)
+    ENDIF(MSVC)
+  ELSE (WIN32)
+    # UNIX
+    ADD_DEFINITIONS(-DIS_LINUX)
+    SET (DEFAULT_BIN_SUBDIR     bin)
+    SET (DEFAULT_CGIBIN_SUBDIR  bin)
+    SET (DEFAULT_LIB_SUBDIR     lib${LIB_SUFFIX})
+    SET (DEFAULT_DATA_SUBDIR    share/dmap)
+    SET (DEFAULT_LIBEXEC_SUBDIR lib${LIB_SUFFIX}/dmap)
+    SET (DEFAULT_PLUGIN_SUBDIR  lib${LIB_SUFFIX}/dmap/plugins)
+    SET (DEFAULT_INCLUDE_SUBDIR include/dmap)
+    SET (DEFAULT_SERVER_MODULE_SUBDIR ${DEFAULT_LIBEXEC_SUBDIR}/server)
+  ENDIF (WIN32)
+  #[[
+  if("${CMAKE_SYSTEM_NAME}"  MATCHES "Linux")
+    SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined")
+    SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined")
+    SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--no-undefined")
+  endif() #"${CMAKE_SYSTEM_NAME}"  MATCHES "Linux")
+  ]]
+  INCLUDE(GenerateExportHeader)
+
+ENDIF (WITH_CORE)
+
+
+#############################################################
+# user-changeable settings which can be used to customize
+# layout of DMAP installation
+# (default values are platform-specific)
+
+SET (DMAP_BIN_SUBDIR     ${DEFAULT_BIN_SUBDIR}     CACHE STRING "Subdirectory where executables will be installed")
+SET (DMAP_CGIBIN_SUBDIR  ${DEFAULT_CGIBIN_SUBDIR}  CACHE STRING "Subdirectory where CGI executables will be installed")
+SET (DMAP_LIB_SUBDIR     ${DEFAULT_LIB_SUBDIR}     CACHE STRING "Subdirectory where libraries will be installed")
+SET (DMAP_LIBEXEC_SUBDIR ${DEFAULT_LIBEXEC_SUBDIR} CACHE STRING "Subdirectory where private executables will be installed")
+SET (DMAP_DATA_SUBDIR    ${DEFAULT_DATA_SUBDIR}    CACHE STRING "Subdirectory where DMAP data will be installed")
+SET (DMAP_PLUGIN_SUBDIR  ${DEFAULT_PLUGIN_SUBDIR}  CACHE STRING "Subdirectory where plugins will be installed")
+SET (DMAP_INCLUDE_SUBDIR ${DEFAULT_INCLUDE_SUBDIR} CACHE STRING "Subdirectory where header files will be installed")
+SET (DMAP_SERVER_MODULE_SUBDIR  ${DEFAULT_SERVER_MODULE_SUBDIR}  CACHE STRING "Subdirectory where server modules will be installed")
+
+# mark *_SUBDIR variables as advanced as this is not something
+# that an average user would use
+MARK_AS_ADVANCED (DMAP_BIN_SUBDIR DMAP_CGIBIN_SUBDIR DMAP_LIB_SUBDIR DMAP_LIBEXEC_SUBDIR DMAP_DATA_SUBDIR DMAP_PLUGIN_SUBDIR DMAP_INCLUDE_SUBDIR)
+
+# full paths for the installation
+SET (DMAP_BIN_DIR     ${DMAP_BIN_SUBDIR})
+SET (DMAP_CGIBIN_DIR  ${DMAP_CGIBIN_SUBDIR})
+SET (DMAP_LIB_DIR     ${DMAP_LIB_SUBDIR})
+SET (DMAP_LIBEXEC_DIR ${DMAP_LIBEXEC_SUBDIR})
+SET (DMAP_DATA_DIR    ${DMAP_DATA_SUBDIR})
+SET (DMAP_PLUGIN_DIR  ${DMAP_PLUGIN_SUBDIR})
+SET (DMAP_INCLUDE_DIR ${DMAP_INCLUDE_SUBDIR})
+SET (DMAP_SERVER_MODULE_DIR ${DMAP_SERVER_MODULE_SUBDIR})
+
+# set the default locations where the targets (executables, libraries) will land when compiled
+# this is to allow running dmap from the source tree without having to actually do a "make install"
+SET (DMAP_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/output)
+SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${DMAP_OUTPUT_DIRECTORY}/${DMAP_BIN_SUBDIR})
+SET (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${DMAP_OUTPUT_DIRECTORY}/${DMAP_LIB_SUBDIR})
+SET (TEST_DATA_DIR "${CMAKE_CURRENT_SOURCE_DIR}/tests/testdata")
+
+# write a marker with source directory path into the output's bin directory
+# if run from the build directory DMAP will detect it and alter the paths
+FILE(WRITE ${DMAP_OUTPUT_DIRECTORY}/${DMAP_BIN_SUBDIR}/dmapbuildpath.txt "${CMAKE_SOURCE_DIR}\n${DMAP_OUTPUT_DIRECTORY}")
+
+#############################################################
+# Python build dependency
+
+FIND_PACKAGE(PythonInterp 3 REQUIRED)
+
+#############################################################
+# Python bindings
+
+# IF (WITH_CORE AND WITH_BINDINGS)
+
+  FIND_PACKAGE(PythonLibrary ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR} EXACT REQUIRED)
+  LIST(
+    APPEND _components
+      python${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR}
+      python${PYTHON_VERSION_MAJOR}
+      python
+  )
+  SET(DMAP_BOOST_PYTHON_FOUND "")
+
+  foreach(_component IN ITEMS ${_components})
+    find_package(Boost COMPONENTS ${_component})
+    if(Boost_FOUND)
+      SET(DMAP_BOOST_PYTHON_FOUND ${_component})
+      break()
+    endif()
+  endforeach()
+
+  if(DMAP_BOOST_PYTHON_FOUND STREQUAL "")
+    message(FATAL_ERROR "No matching Boost.Python component found")
+  endif()
+  #MESSAGE(STATUS "XXX python: ${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR}")
+
+  IF (NOT BINDINGS_GLOBAL_INSTALL)
+    SET(PYTHON_SITE_PACKAGES_DIR ${DMAP_DATA_DIR}/python)
+  ENDIF (NOT BINDINGS_GLOBAL_INSTALL)
+
+# ENDIF (WITH_CORE AND WITH_BINDINGS)
+
+#############################################################
+# create dmpconfig.h
+# installed with app target
+CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/cmake_templates/dmpconfig.h.in ${CMAKE_BINARY_DIR}/dmpconfig.h)
+INCLUDE_DIRECTORIES(${CMAKE_BINARY_DIR})
+
+#[[
+message(STATUS "Project will be installed to ${CMAKE_INSTALL_PREFIX}")
+
+include(GNUInstallDirs)
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR})
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR})
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_BINDIR})
+
+set(INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR} CACHE PATH "Installation directory for libraries")
+set(INSTALL_BINDIR ${CMAKE_INSTALL_BINDIR} CACHE PATH "Installation directory for executables")
+set(INSTALL_INCLUDEDIR ${CMAKE_INSTALL_INCLUDEDIR} CACHE PATH "Installation directory for header files")
+
+# Report to user
+foreach(p LIB BIN INCLUDE CMAKE)
+  file(TO_NATIVE_PATH ${CMAKE_INSTALL_PREFIX}/${INSTALL_${p}DIR} _path )
+  message(STATUS "Installing ${p} components to ${_path}")
+  unset(_path)
+endforeach()
+]]
+#############################################################
+# process subdirs
+
+ADD_SUBDIRECTORY(apache)
+ADD_SUBDIRECTORY(src)
+ADD_SUBDIRECTORY(python)
+
+include(Dart)
+# enable testing and define tests
+enable_testing()
+add_subdirectory(tests)
+
+

+dmap server 4.0
\ No newline at end of file

+
+option(WITH_APACHE "Build Apache Module" ON)
+
+if(WITH_APACHE)
+  add_library(mod_dmapserver MODULE mod_dmapserver.c)
+  set_target_properties(mod_dmapserver PROPERTIES PREFIX "")
+  
+  find_package(APACHE)
+  if(APACHE_FOUND)
+     include_directories(${APACHE_INCLUDE_DIR})
+     target_link_libraries(mod_dmapserver ${APACHE_LIBRARY})
+  else(APACHE_FOUND)
+     MESSAGE (SEND_ERROR "APACHE dependency was not found!")
+  endif(APACHE_FOUND)
+
+  find_package(APR)
+  if(APR_FOUND)
+     include_directories(${APR_INCLUDE_DIR} ${APU_INCLUDE_DIR})
+     target_link_libraries(mod_dmapserver ${APR_LIBRARY} ${APU_LIBRARY})
+     if(DEFINED APR_CPPFLAGS)
+       add_definitions("${APR_CPPFLAGS}")
+     endif(DEFINED APR_CPPFLAGS)
+   else(APR_FOUND)
+      MESSAGE (SEND_ERROR "APR dependency was not found!")
+   endif(APR_FOUND)
+
+  if(APACHE_MODULE_DIR)
+    INSTALL(TARGETS mod_dmapserver DESTINATION ${APACHE_MODULE_DIR})
+  endif(APACHE_MODULE_DIR)
+else(WITH_APACHE)
+   message(STATUS " * Apache Module support status: DISABLED")
+endif(WITH_APACHE)
\ No newline at end of file

+/* Include the required headers from httpd */
+#include "httpd.h"
+#include "http_core.h"
+#include "http_protocol.h"
+#include "http_request.h"
+
+/* Define prototypes of our functions in this module */
+static void register_hooks(apr_pool_t *pool);
+static int example_handler(request_rec *r);
+
+/* Define our module as an entity and assign a function for registering hooks  */
+
+module AP_MODULE_DECLARE_DATA   example_module =
+{
+    STANDARD20_MODULE_STUFF,
+    NULL,            // Per-directory configuration handler
+    NULL,            // Merge handler for per-directory configurations
+    NULL,            // Per-server configuration handler
+    NULL,            // Merge handler for per-server configurations
+    NULL,            // Any directives we may have for httpd
+    register_hooks   // Our hook registering function
+};
+
+
+/* register_hooks: Adds a hook to the httpd process */
+static void register_hooks(apr_pool_t *pool) 
+{
+    
+    /* Hook the request handler */
+    ap_hook_handler(example_handler, NULL, NULL, APR_HOOK_LAST);
+}
+
+/* The handler function for our module.
+ * This is where all the fun happens!
+ */
+
+static int example_handler(request_rec *r)
+{
+    /* First off, we need to check if this is a call for the "example" handler.
+     * If it is, we accept it and do our things, it not, we simply return DECLINED,
+     * and Apache will try somewhere else.
+     */
+    if (!r->handler || strcmp(r->handler, "example-handler")) return (DECLINED);
+    
+    // The first thing we will do is write a simple "Hello, world!" back to the client.
+    ap_rputs("Hello, world!<br/>", r);
+    return OK;
+}
\ No newline at end of file

+#
+#  APACHE_FOUND - System has APACHE
+#  APACHE_INCLUDE_DIR - The APACHE include directory
+#
+#  APACHE_LOCATION
+#   setting this enables search for apache libraries / headers in this location
+
+#
+# Include directories
+#
+find_path(APACHE_INCLUDE_DIR
+          NAMES httpd.h 
+          PATH_SUFFIXES httpd apache apache2 apache22 apache24
+)
+
+if(NOT DEFINED APACHE_MODULE_DIR)
+   find_program(APXS_BIN NAMES apxs apxs2
+             PATH_SUFFIXES httpd apache apache2
+   )
+
+   if(APXS_BIN)
+     EXECUTE_PROCESS(COMMAND ${APXS_BIN} -q LIBEXECDIR
+	     OUTPUT_VARIABLE APACHE_MODULE_DIR OUTPUT_STRIP_TRAILING_WHITESPACE)
+   endif(APXS_BIN)
+endif(NOT DEFINED APACHE_MODULE_DIR)
+
+include(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set APACHE_FOUND to TRUE if 
+# all listed variables are TRUE
+find_package_handle_standard_args(APACHE DEFAULT_MSG APACHE_INCLUDE_DIR )
+mark_as_advanced(APACHE_INCLUDE_DIR)

+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# - Find Apache Portable Runtime
+# Find the APR includes and libraries
+# This module defines
+#  APR_INCLUDE_DIR and APRUTIL_INCLUDE_DIR, where to find apr.h, etc.
+#  APR_LIBRARIES and APRUTIL_LIBRARIES, the libraries needed to use APR.
+#  APR_FOUND and APRUTIL_FOUND, If false, do not try to use APR.
+# also defined, but not for general use are
+#  APR_LIBRARY and APRUTIL_LIBRARY, where to find the APR library.
+
+# APR first.
+
+FIND_PROGRAM(APR_CONFIG_BIN
+   NAMES apr-config apr-1-config )
+
+if(APR_CONFIG_BIN)
+   execute_process(
+      COMMAND ${APR_CONFIG_BIN} --includedir
+      OUTPUT_VARIABLE HINT_APR_INCLUDE_DIR
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+   )
+   execute_process(
+      COMMAND ${APR_CONFIG_BIN} --cppflags
+      OUTPUT_VARIABLE APR_CPPFLAGS
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+   )
+endif(APR_CONFIG_BIN)
+
+FIND_PATH(APR_INCLUDE_DIR
+   NAMES apr.h
+   HINTS ${HINT_APR_INCLUDE_DIR}
+   PATH_SUFFIXES apr-1 apr-1.0 apr 
+)
+
+FIND_LIBRARY(APR_LIBRARY
+  NAMES apr-1 apr
+  PATH_SUFFIXES apr-1 apr-1.0 apr
+)
+
+set(APR_INCLUDE_DIRS ${APR_INCLUDE_DIR})
+set(APR_LIBRARIES ${APR_LIBRARY})
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(APR DEFAULT_MSG APR_LIBRARY APR_INCLUDE_DIR)
+mark_as_advanced(APR_LIBRARY APR_INCLUDE_DIR)
+
+# Next, APRUTIL.
+
+FIND_PATH(APU_INCLUDE_DIR
+   NAMES apu.h
+   PATH_SUFFIXES apr-1 apr-1.0 apr 
+)
+
+FIND_LIBRARY(APU_LIBRARY
+  NAMES aprutil-1 aprutil
+  PATH_SUFFIXES apr-1 apr-1.0 apr
+)
+
+
+set(APU_INCLUDE_DIRS ${APU_INCLUDE_DIR})
+set(APU_LIBRARIES ${APU_LIBRARY})
+find_package_handle_standard_args(APU DEFAULT_MSG APU_LIBRARY APU_INCLUDE_DIR)
+mark_as_advanced(APU_LIBRARY APU_INCLUDE_DIR)

+# - Try to find the CAIRO library
+# Once done this will define
+#
+#  CAIRO_ROOT_DIR - Set this variable to the root installation of CAIRO
+#
+# Read-Only variables:
+#  CAIRO_FOUND - system has the CAIRO library
+#  CAIRO_INCLUDE_DIR - the CAIRO include directory
+#  CAIRO_LIBRARIES - The libraries needed to use CAIRO
+#  CAIRO_VERSION - This is set to $major.$minor.$revision (eg. 0.9.8)
+
+#=============================================================================
+# Copyright 2012 Dmitry Baryshnikov <polimax at mail dot ru>
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+find_package(PkgConfig)
+
+if(PKG_CONFIG_FOUND)
+    pkg_check_modules(_CAIRO cairo)
+endif (PKG_CONFIG_FOUND)
+
+SET(_CAIRO_ROOT_HINTS
+  $ENV{CAIRO}
+  ${CAIRO_ROOT_DIR}
+  )
+SET(_CAIRO_ROOT_PATHS
+  $ENV{CAIRO}/src
+  /usr
+  /usr/local
+  )
+SET(_CAIRO_ROOT_HINTS_AND_PATHS
+  HINTS ${_CAIRO_ROOT_HINTS}
+  PATHS ${_CAIRO_ROOT_PATHS}
+  )
+
+FIND_PATH(CAIRO_INCLUDE_DIR
+  NAMES
+    cairo.h
+  HINTS
+    ${_CAIRO_INCLUDEDIR}
+  ${_CAIRO_ROOT_HINTS_AND_PATHS}
+  PATH_SUFFIXES
+    include
+    "include/cairo"
+)
+
+IF(NOT PKGCONFIG_FOUND AND WIN32 AND NOT CYGWIN)
+  # MINGW should go here too
+  IF(MSVC)
+    # Implementation details:
+    # We are using the libraries located in the VC subdir instead of the parent directory eventhough :
+    FIND_LIBRARY(CAIRO_DEBUG
+      NAMES
+        cairod
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    FIND_LIBRARY(CAIRO_RELEASE
+      NAMES
+        cairo
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "VC"
+        "lib/VC"
+    )
+
+    if( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
+        if(NOT CAIRO_DEBUG)
+            set(CAIRO_DEBUG ${CAIRO_RELEASE})
+        endif(NOT CAIRO_DEBUG)
+      set( CAIRO_LIBRARIES
+        optimized ${CAIRO_RELEASE} debug ${CAIRO_DEBUG}
+        )
+    else()
+      set( CAIRO_LIBRARIES ${CAIRO_RELEASE})
+    endif()
+    MARK_AS_ADVANCED(CAIRO_DEBUG CAIRO_RELEASE)
+  ELSEIF(MINGW)
+    # same player, for MingW
+    FIND_LIBRARY(CAIRO
+      NAMES
+        cairo
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        "lib"
+        "lib/MinGW"
+    )
+
+    MARK_AS_ADVANCED(CAIRO)
+    set( CAIRO_LIBRARIES ${CAIRO})
+  ELSE(MSVC)
+    # Not sure what to pick for -say- intel, let's use the toplevel ones and hope someone report issues:
+    FIND_LIBRARY(CAIRO
+      NAMES
+        cairo
+      HINTS
+        ${_CAIRO_LIBDIR}
+      ${_CAIRO_ROOT_HINTS_AND_PATHS}
+      PATH_SUFFIXES
+        lib
+    )
+
+    MARK_AS_ADVANCED(CAIRO)
+    set( CAIRO_LIBRARIES ${CAIRO} )
+  ENDIF(MSVC)
+ELSE()
+
+  FIND_LIBRARY(CAIRO_LIBRARY
+    NAMES
+        cairo
+    HINTS
+      ${_CAIRO_LIBDIR}
+    ${_CAIRO_ROOT_HINTS_AND_PATHS}
+    PATH_SUFFIXES
+      "lib"
+      "local/lib"
+  )
+
+  MARK_AS_ADVANCED(CAIRO_LIBRARY)
+
+  # compat defines
+  SET(CAIRO_LIBRARIES ${CAIRO_LIBRARY})
+
+ENDIF()
+
+#message( STATUS "Cairo_FIND_VERSION=${Cairo_FIND_VERSION}.")
+#message( STATUS "CAIRO_INCLUDE_DIR=${CAIRO_INCLUDE_DIR}.")
+
+# Fetch version from cairo-version.h if a version was requested by find_package()
+if(CAIRO_INCLUDE_DIR AND Cairo_FIND_VERSION)
+  file(READ "${CAIRO_INCLUDE_DIR}/cairo-version.h" _CAIRO_VERSION_H_CONTENTS)
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+CAIRO_VERSION_MAJOR[ \t]+([0-9]+).*"
+         "\\2" CAIRO_VERSION_MAJOR ${_CAIRO_VERSION_H_CONTENTS})
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+CAIRO_VERSION_MINOR[ \t]+([0-9]+).*"
+         "\\2" CAIRO_VERSION_MINOR ${_CAIRO_VERSION_H_CONTENTS})
+  string(REGEX REPLACE "^(.*\n)?#define[ \t]+CAIRO_VERSION_MICRO[ \t]+([0-9]+).*"
+         "\\2" CAIRO_VERSION_MICRO ${_CAIRO_VERSION_H_CONTENTS})
+  set(CAIRO_VERSION ${CAIRO_VERSION_MAJOR}.${CAIRO_VERSION_MINOR}.${CAIRO_VERSION_MICRO}
+      CACHE INTERNAL "The version number for Cairo libraries")
+endif()
+
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(Cairo
+  REQUIRED_VARS
+    CAIRO_LIBRARIES
+    CAIRO_INCLUDE_DIR
+  VERSION_VAR
+    CAIRO_VERSION
+)
+
+MARK_AS_ADVANCED(CAIRO_INCLUDE_DIR CAIRO_LIBRARIES)

+# CMake module to search for FastCGI headers
+#
+# If it's found it sets FCGI_FOUND to TRUE
+# and following variables are set:
+#    FCGI_INCLUDE_DIR
+#    FCGI_LIBRARY
+FIND_PATH(FCGI_INCLUDE_DIR
+  fcgio.h
+  PATHS
+  /usr/include
+  /usr/local/include
+  /usr/include/fastcgi
+  "$ENV{LIB_DIR}/include"
+  $ENV{INCLUDE}
+  )
+FIND_LIBRARY(FCGI_LIBRARY NAMES fcgi libfcgi PATHS 
+  /usr/local/lib 
+  /usr/lib 
+  "$ENV{LIB_DIR}/lib"
+  "$ENV{LIB}"
+  )
+
+IF (FCGI_INCLUDE_DIR AND FCGI_LIBRARY)
+   SET(FCGI_FOUND TRUE)
+ENDIF (FCGI_INCLUDE_DIR AND FCGI_LIBRARY)
+
+IF (FCGI_FOUND)
+   IF (NOT FCGI_FIND_QUIETLY)
+      MESSAGE(STATUS "Found FCGI: ${FCGI_LIBRARY}")
+   ENDIF (NOT FCGI_FIND_QUIETLY)
+ELSE (FCGI_FOUND)
+   IF (FCGI_FIND_REQUIRED)
+      MESSAGE(FATAL_ERROR "Could not find FCGI")
+   ENDIF (FCGI_FIND_REQUIRED)
+ENDIF (FCGI_FOUND)

+# - Find LibEvent (a cross event library)
+# This module defines
+# LIBEVENT_INCLUDE_DIR, where to find LibEvent headers
+# LIBEVENT_LIB, LibEvent libraries
+# LibEvent_FOUND, If false, do not try to use libevent
+
+set(LibEvent_EXTRA_PREFIXES /usr/local /opt/local "$ENV{HOME}")
+foreach(prefix ${LibEvent_EXTRA_PREFIXES})
+  list(APPEND LibEvent_INCLUDE_PATHS "${prefix}/include")
+  list(APPEND LibEvent_LIB_PATHS "${prefix}/lib")
+endforeach()
+
+find_path(LIBEVENT_INCLUDE_DIR event.h PATHS ${LibEvent_INCLUDE_PATHS})
+find_library(LIBEVENT_LIB NAMES event PATHS ${LibEvent_LIB_PATHS})
+find_library(LIBEVENT_PTHREAD_LIB NAMES event_pthreads PATHS ${LibEvent_LIB_PATHS})
+
+if (LIBEVENT_LIB AND LIBEVENT_INCLUDE_DIR AND LIBEVENT_PTHREAD_LIB)
+  set(LibEvent_FOUND TRUE)
+  set(LIBEVENT_LIB ${LIBEVENT_LIB} ${LIBEVENT_PTHREAD_LIB})
+else ()
+  set(LibEvent_FOUND FALSE)
+endif ()
+
+if (LibEvent_FOUND)
+  if (NOT LibEvent_FIND_QUIETLY)
+    message(STATUS "Found libevent: ${LIBEVENT_LIB}")
+  endif ()
+else ()
+  if (LibEvent_FIND_REQUIRED)
+    message(FATAL_ERROR "Could NOT find libevent and libevent_pthread.")
+  endif ()
+  message(STATUS "libevent and libevent_pthread NOT found.")
+endif ()
+
+mark_as_advanced(
+    LIBEVENT_LIB
+    LIBEVENT_INCLUDE_DIR
+  )
\ No newline at end of file

+# -*- coding: utf-8 -*-
+#
+#   Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+#    All rights reserved.
+#
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions are met:
+#        * Redistributions of source code must retain the above copyright
+#        notice, this list of conditions and the following disclaimer.
+#        * Redistributions in binary form must reproduce the above copyright
+#        notice, this list of conditions and the following disclaimer in the
+#        documentation and/or other materials provided with the distribution.
+#        * Neither the name of the  Simon Edwards <simon@simonzone.com> nor the
+#        names of its contributors may be used to endorse or promote products
+#        derived from this software without specific prior written permission.
+#
+#    THIS SOFTWARE IS PROVIDED BY Simon Edwards <simon@simonzone.com> ''AS IS'' AND ANY
+#    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+#    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+#    DISCLAIMED. IN NO EVENT SHALL Simon Edwards <simon@simonzone.com> BE LIABLE FOR ANY
+#    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+#    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+#    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# FindLibPython.py
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+import sys
+import distutils.sysconfig
+
+print("exec_prefix:%s" % sys.exec_prefix)
+print("short_version:%s" % sys.version[:3])
+print("long_version:%s" % sys.version.split()[0])
+print("py_inc_dir:%s" % distutils.sysconfig.get_python_inc())
+print("site_packages_dir:%s" % distutils.sysconfig.get_python_lib(plat_specific=1))

+# Find PostgreSQL
+# ~~~~~~~~~~~~~~~
+# Copyright (c) 2007, Martin Dobias <wonder.sk at gmail.com>
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+# CMake module to search for PostgreSQL library
+#
+# pg_config is searched for in POSTGRES_CONFIG dir,
+# default /usr/bin
+#
+# If it's found it sets POSTGRES_FOUND to TRUE
+# and following variables are set:
+#    POSTGRES_INCLUDE_DIR
+#    POSTGRES_LIBRARY
+
+IF(ANDROID)
+  SET(POSTGRES_INCLUDE_DIR ${POSTGRES_INCLUDE_DIR} CACHE STRING INTERNAL)
+  SET(POSTGRES_LIBRARY ${PG_TMP}/libpq.so CACHE STRING INTERNAL)
+ENDIF(ANDROID)
+
+IF(WIN32 AND NOT ANDROID)
+  IF (NOT POSTGRES_INCLUDE_DIR)
+    FIND_PATH(POSTGRES_INCLUDE_DIR libpq-fe.h 
+      /usr/local/include 
+      /usr/include 
+      c:/msys/local/include
+      "$ENV{LIB_DIR}/include/postgresql"
+      "$ENV{LIB_DIR}/include"
+      )
+  ENDIF (NOT POSTGRES_INCLUDE_DIR)
+
+  IF (NOT POSTGRES_LIBRARY)
+    FIND_LIBRARY(POSTGRES_LIBRARY NAMES pq libpq libpqdll PATHS 
+      /usr/local/lib 
+      /usr/lib 
+      c:/msys/local/lib
+      "$ENV{LIB_DIR}/lib"
+      )
+  ENDIF (NOT POSTGRES_LIBRARY)
+
+ELSE(WIN32)
+  IF(UNIX) 
+
+    SET(POSTGRES_CONFIG_PREFER_PATH "$ENV{POSTGRES_HOME}/bin" CACHE STRING "preferred path to PG (pg_config)")
+    FIND_PROGRAM(POSTGRES_CONFIG pg_config
+      ${POSTGRES_CONFIG_PREFER_PATH}
+      /usr/local/pgsql/bin/
+      /usr/local/bin/
+      /usr/bin/
+      )
+    # MESSAGE("DBG POSTGRES_CONFIG ${POSTGRES_CONFIG}")
+    
+    IF (POSTGRES_CONFIG) 
+      # set INCLUDE_DIR
+      EXEC_PROGRAM(${POSTGRES_CONFIG}
+        ARGS --includedir
+        OUTPUT_VARIABLE PG_TMP)
+      SET(POSTGRES_INCLUDE_DIR ${PG_TMP} CACHE STRING INTERNAL)
+
+      # set LIBRARY_DIR
+      EXEC_PROGRAM(${POSTGRES_CONFIG}
+        ARGS --libdir
+        OUTPUT_VARIABLE PG_TMP)
+      IF (APPLE)
+        SET(POSTGRES_LIBRARY ${PG_TMP}/libpq.dylib CACHE STRING INTERNAL)
+      ELSEIF (CYGWIN)
+        EXEC_PROGRAM(${POSTGRES_CONFIG}
+        ARGS --libs
+        OUTPUT_VARIABLE PG_TMP)
+
+        STRING(REGEX MATCHALL "[-][L]([^ ;])+" _LDIRS "${PG_TMP}")
+        STRING(REGEX MATCHALL "[-][l]([^ ;])+" _LLIBS "${PG_TMP}")
+
+        FIND_LIBRARY(POSTGRES_LIBRARY NAMES pq PATHS /usr/lib /usr/local/lib)
+
+        SET(_DIRS)
+        FOREACH(_DIR ${_LDIRS})
+          STRING(REPLACE "-L" "" _DIR ${_DIR})
+          SET(_DIRS ${_DIRS} ${_DIR})
+        ENDFOREACH(_DIR ${_LDIRS})
+
+        SET(_LIBS)
+        FOREACH(_LIB ${_LLIBS})
+          STRING(REPLACE "-l" "" _LIB ${_LIB})
+          SET(_LIBS ${_LIBS} ${_LIB})
+        ENDFOREACH(_LIB ${_LDIRS})
+
+        FOREACH(_LIBNAME ${_LIBS})
+	  UNSET(PG_LIB CACHE)
+          FIND_LIBRARY(PG_LIB NAMES ${_LIBNAME} PATHS ${_DIRS} /usr/lib /usr/local/lib)
+	  IF(NOT PG_LIB)
+	    MESSAGE(FATAL "PostgreSQL dependency library ${_LIBNAME} not found")
+	  ENDIF(NOT PG_LIB)
+          SET(POSTGRES_LIBRARY ${POSTGRES_LIBRARY} ${PG_LIB})
+        ENDFOREACH(_LIBNAME ${_LIBS})
+
+      ELSE (CYGWIN)
+        FIND_LIBRARY(POSTGRES_LIBRARY NAMES pq libpq libpqdll PATHS ${PG_TMP}/lib)
+      ENDIF (APPLE)
+    ENDIF(POSTGRES_CONFIG)
+
+  ENDIF(UNIX)
+ENDIF(WIN32 AND NOT ANDROID)
+
+
+IF (POSTGRES_INCLUDE_DIR AND POSTGRES_LIBRARY)
+   SET(POSTGRES_FOUND TRUE)
+   IF(EXISTS "${POSTGRES_INCLUDE_DIR}/pg_config.h")
+     SET(HAVE_PGCONFIG TRUE)
+   ELSE(EXISTS "${POSTGRES_INCLUDE_DIR}/pg_config.h")
+     SET(HAVE_PGCONFIG FALSE)
+   ENDIF(EXISTS "${POSTGRES_INCLUDE_DIR}/pg_config.h")
+ENDIF (POSTGRES_INCLUDE_DIR AND POSTGRES_LIBRARY)
+
+
+IF (POSTGRES_FOUND)
+
+   IF (NOT POSTGRES_FIND_QUIETLY)
+      MESSAGE(STATUS "Found PostgreSQL: ${POSTGRES_LIBRARY}")
+   ENDIF (NOT POSTGRES_FIND_QUIETLY)
+
+ELSE (POSTGRES_FOUND)
+
+   #SET (POSTGRES_INCLUDE_DIR "")
+   #SET (POSTGRES_LIBRARY "")
+
+   IF (POSTGRES_FIND_REQUIRED)
+      MESSAGE(FATAL_ERROR "Could not find PostgreSQL")
+   ELSE (POSTGRES_FIND_REQUIRED)
+      MESSAGE(STATUS "Could not find PostgreSQL")
+   ENDIF (POSTGRES_FIND_REQUIRED)
+
+ENDIF (POSTGRES_FOUND)

+# Find Python
+# ~~~~~~~~~~~
+# Find the Python interpreter and related Python directories.
+#
+# This file defines the following variables:
+#
+# PYTHON_EXECUTABLE - The path and filename of the Python interpreter.
+#
+# PYTHON_SHORT_VERSION - The version of the Python interpreter found,
+#     excluding the patch version number. (e.g. 2.5 and not 2.5.1))
+#
+# PYTHON_LONG_VERSION - The version of the Python interpreter found as a human
+#     readable string.
+#
+# PYTHON_SITE_PACKAGES_DIR - Location of the Python site-packages directory.
+#
+# PYTHON_INCLUDE_PATH - Directory holding the python.h include file.
+#
+# PYTHON_LIBRARY, PYTHON_LIBRARIES- Location of the Python library.
+
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+
+
+INCLUDE(CMakeFindFrameworks)
+
+if(EXISTS "${PYTHON_INCLUDE_PATH}" AND EXISTS "${PYTHON_LIBRARY}" AND EXISTS "${PYTHON_SITE_PACKAGES_DIR}")
+  # Already in cache, be silent
+  set(PYTHONLIBRARY_FOUND TRUE)
+else(EXISTS "${PYTHON_INCLUDE_PATH}" AND EXISTS "${PYTHON_LIBRARY}" AND EXISTS "${PYTHON_SITE_PACKAGES_DIR}")
+
+  FIND_PACKAGE(PythonInterp 3)
+
+  if(PYTHONINTERP_FOUND)
+    FIND_FILE(_find_lib_python_py FindLibPython.py PATHS ${CMAKE_MODULE_PATH} NO_CMAKE_FIND_ROOT_PATH)
+
+    EXECUTE_PROCESS(COMMAND ${PYTHON_EXECUTABLE}  ${_find_lib_python_py} OUTPUT_VARIABLE python_config)
+    if(python_config)
+      STRING(REGEX REPLACE ".*exec_prefix:([^\n]+).*$" "\\1" PYTHON_PREFIX ${python_config})
+      STRING(REGEX REPLACE ".*\nshort_version:([^\n]+).*$" "\\1" PYTHON_SHORT_VERSION ${python_config})
+      STRING(REGEX REPLACE ".*\nlong_version:([^\n]+).*$" "\\1" PYTHON_LONG_VERSION ${python_config})
+      STRING(REGEX REPLACE ".*\npy_inc_dir:([^\n]+).*$" "\\1" PYTHON_INCLUDE_PATH ${python_config})
+      if(NOT PYTHON_SITE_PACKAGES_DIR)
+        if(NOT PYTHON_LIBS_WITH_KDE_LIBS)
+          STRING(REGEX REPLACE ".*\nsite_packages_dir:([^\n]+).*$" "\\1" PYTHON_SITE_PACKAGES_DIR ${python_config})
+        else(NOT PYTHON_LIBS_WITH_KDE_LIBS)
+          set(PYTHON_SITE_PACKAGES_DIR ${KDE4_LIB_INSTALL_DIR}/python${PYTHON_SHORT_VERSION}/site-packages)
+        endif(NOT PYTHON_LIBS_WITH_KDE_LIBS)
+      endif(NOT PYTHON_SITE_PACKAGES_DIR)
+      STRING(REGEX REPLACE "([0-9]+).([0-9]+)" "\\1\\2" PYTHON_SHORT_VERSION_NO_DOT ${PYTHON_SHORT_VERSION})
+      set(PYTHON_LIBRARY_NAMES python${PYTHON_SHORT_VERSION} python${PYTHON_SHORT_VERSION_NO_DOT} python${PYTHON_SHORT_VERSION}m python${PYTHON_SHORT_VERSION_NO_DOT}m)
+      if(WIN32)
+          STRING(REPLACE "\\" "/" PYTHON_SITE_PACKAGES_DIR ${PYTHON_SITE_PACKAGES_DIR})
+          FIND_LIBRARY(PYTHON_LIBRARY NAMES ${PYTHON_LIBRARY_NAMES} PATHS ${PYTHON_PREFIX}/lib ${PYTHON_PREFIX}/libs)
+      endif(WIN32)
+      FIND_LIBRARY(PYTHON_LIBRARY NAMES ${PYTHON_LIBRARY_NAMES})
+      set(PYTHON_INCLUDE_PATH ${PYTHON_INCLUDE_PATH} CACHE FILEPATH "Directory holding the python.h include file" FORCE)
+      set(PYTHONLIBRARY_FOUND TRUE)
+    endif(python_config)
+
+    # adapted from cmake's builtin FindPythonLibs
+    if(APPLE)
+        # If a framework has been detected in the include path, make sure
+        # framework's versioned library (not any .dylib) is used for linking
+        # NOTE: don't rely upon Python.framework/Versions/Current, since that may be 2.7
+        if("${PYTHON_INCLUDE_PATH}" MATCHES "Python\\.framework")
+          set(PYTHON_LIBRARY "")
+          set(PYTHON_DEBUG_LIBRARY "")
+          # get clean path to just framework
+          STRING(REGEX REPLACE "^(.*/Python\\.framework).*$" "\\1" _py_fw "${PYTHON_INCLUDE_PATH}")
+          if("${_py_fw}" MATCHES "Cellar/python")
+            # Appears to be a Homebrew Python install; do specific fix ups
+            # get Homebrew prefix (may not be /usr/local)
+            STRING(REGEX REPLACE "^(.+)/Cellar.*$" "\\1" _hb_prefix "${_py_fw}")
+            # prefer the Homebrew prefix framework over only versioned Python keg
+            set(_py_fw "${_hb_prefix}/Frameworks/Python.framework")
+            # prefer the symlinked-to Homebrew site-packages over only versioned Python keg
+            set(PYTHON_SITE_PACKAGES_DIR "${_hb_prefix}/lib/python${PYTHON_SHORT_VERSION}/site-packages")
+          endif("${_py_fw}" MATCHES "Cellar/python")
+          # prefer the Headers subdirectory for includes
+          if(EXISTS "${_py_fw}/Versions/${PYTHON_SHORT_VERSION}/Headers")
+            set(PYTHON_INCLUDE_PATH "${_py_fw}/Versions/${PYTHON_SHORT_VERSION}/Headers" CACHE FILEPATH "Directory holding the python.h include file" FORCE)
+          endif(EXISTS "${_py_fw}/Versions/${PYTHON_SHORT_VERSION}/Headers")
+        endif("${PYTHON_INCLUDE_PATH}" MATCHES "Python\\.framework")
+        if(NOT PYTHON_LIBRARY)
+          # ensure the versioned framework's library is defined, instead of relying upon -F search paths
+          if(EXISTS "${_py_fw}/Versions/${PYTHON_SHORT_VERSION}/Python")
+            set(PYTHON_LIBRARY "${_py_fw}/Versions/${PYTHON_SHORT_VERSION}/Python" CACHE FILEPATH "Python framework library" FORCE)
+          endif(EXISTS "${_py_fw}/Versions/${PYTHON_SHORT_VERSION}/Python")
+        endif(NOT PYTHON_LIBRARY)
+        if(PYTHON_LIBRARY)
+          set(PYTHONLIBRARY_FOUND TRUE)
+        endif(PYTHON_LIBRARY)
+    endif(APPLE)
+  endif(PYTHONINTERP_FOUND)
+
+  if(PYTHONLIBRARY_FOUND)
+    if(APPLE)
+      # keep reference to system or custom python site-packages
+      # useful during app-bundling operations
+      set(PYTHON_SITE_PACKAGES_SYS ${PYTHON_SITE_PACKAGES_DIR} CACHE FILEPATH "Directory holding Python site packages")
+    endif(APPLE)
+    set(PYTHON_LIBRARIES ${PYTHON_LIBRARY})
+    if(NOT PYTHONLIBRARY_FIND_QUIETLY)
+      message(STATUS "Found Python executable: ${PYTHON_EXECUTABLE}")
+      message(STATUS "Found Python version: ${PYTHON_LONG_VERSION}")
+      message(STATUS "Found Python library: ${PYTHON_LIBRARY}")
+      message(STATUS "Found Python site-packages: ${PYTHON_SITE_PACKAGES_DIR}")
+    endif(NOT PYTHONLIBRARY_FIND_QUIETLY)
+  else(PYTHONLIBRARY_FOUND)
+    if(PYTHONLIBRARY_FIND_REQUIRED)
+      message(FATAL_ERROR "Could not find Python")
+    endif(PYTHONLIBRARY_FIND_REQUIRED)
+  endif(PYTHONLIBRARY_FOUND)
+
+endif (EXISTS "${PYTHON_INCLUDE_PATH}" AND EXISTS "${PYTHON_LIBRARY}" AND EXISTS "${PYTHON_SITE_PACKAGES_DIR}")

+# Python macros
+# ~~~~~~~~~~~~~
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+# This file defines the following macros:
+#
+# PYTHON_INSTALL (SOURCE_FILE DESTINATION_DIR)
+#     Install the SOURCE_FILE, which is a Python .py file, into the
+#     destination directory during install. The file will be byte compiled
+#     and both the .py file and .pyc file will be installed.
+
+GET_FILENAME_COMPONENT(PYTHON_MACROS_MODULE_PATH ${CMAKE_CURRENT_LIST_FILE}  PATH)
+
+MACRO(PYTHON_INSTALL SOURCE_FILE DESTINATION_DIR)
+
+  FIND_FILE(_python_compile_py PythonCompile.py PATHS ${CMAKE_MODULE_PATH})
+
+
+  # Install the source file.
+  INSTALL(FILES ${SOURCE_FILE} DESTINATION ${DESTINATION_DIR})
+
+  # Byte compile and install the .pyc file.        
+  GET_FILENAME_COMPONENT(_absfilename ${SOURCE_FILE} ABSOLUTE)
+  GET_FILENAME_COMPONENT(_filename ${SOURCE_FILE} NAME)
+  GET_FILENAME_COMPONENT(_filenamebase ${SOURCE_FILE} NAME_WE)
+  GET_FILENAME_COMPONENT(_basepath ${SOURCE_FILE} PATH)
+
+  if(WIN32)
+    string(REGEX REPLACE ".:/" "/" _basepath "${_basepath}")
+  endif(WIN32)
+
+  SET(_bin_py ${CMAKE_CURRENT_BINARY_DIR}/${_basepath}/${_filename})
+  SET(_bin_pyc ${CMAKE_CURRENT_BINARY_DIR}/${_basepath}/${_filenamebase}.pyc)
+
+  FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${_basepath})
+
+  SET(_message "-DMESSAGE=Byte-compiling ${_bin_py}")
+
+  GET_FILENAME_COMPONENT(_abs_bin_py ${_bin_py} ABSOLUTE)
+  IF(_abs_bin_py STREQUAL ${_absfilename})    # Don't copy the file onto itself.
+    ADD_CUSTOM_COMMAND(
+      TARGET compile_python_files
+      COMMAND ${CMAKE_COMMAND} -E echo ${message}
+      COMMAND ${PYTHON_EXECUTABLE} ${_python_compile_py} ${_bin_py}
+      DEPENDS ${_absfilename}
+    )
+  ELSE(_abs_bin_py STREQUAL ${_absfilename})
+    ADD_CUSTOM_COMMAND(
+      TARGET compile_python_files
+      COMMAND ${CMAKE_COMMAND} -E echo ${message} 
+      COMMAND ${CMAKE_COMMAND} -E copy ${_absfilename} ${_bin_py}
+      COMMAND ${PYTHON_EXECUTABLE} ${_python_compile_py} ${_bin_py}
+      DEPENDS ${_absfilename}
+    )
+  ENDIF(_abs_bin_py STREQUAL ${_absfilename})
+
+  INSTALL(FILES ${_bin_pyc} DESTINATION ${DESTINATION_DIR})
+ENDMACRO(PYTHON_INSTALL)

+/**************************************************************************
+* file:              dmpconfig.h.in
+
+* Author:            wanzhongping
+* Date:              2021-02-24 16:21:32
+* Email:             zhongpingw@chinadci.com
+* copyright:         广州城市信息研究所有限公司
+***************************************************************************/
+
+#ifndef __dmpconfig_h_in__
+#define __dmpconfig_h_in__
+
+#define VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}-${RELEASE_NAME}"
+
+
+#define VERSION_INT ${DMAP_VERSION_INT}
+
+#define RELEASE_NAME "${RELEASE_NAME}"
+
+#define DMAP_PLUGIN_SUBDIR "${DMAP_PLUGIN_SUBDIR}"
+#define DMAP_DATA_SUBDIR "${DMAP_DATA_SUBDIR}"
+#define DMAP_LIBEXEC_SUBDIR "${DMAP_LIBEXEC_SUBDIR}"
+#define DMAP_LIB_SUBDIR "${DMAP_LIB_SUBDIR}"
+#define CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}"
+#define CMAKE_SOURCE_DIR "${CMAKE_SOURCE_DIR}"
+#define DMAP_SERVER_MODULE_SUBDIR "${DMAP_SERVER_MODULE_SUBDIR}"
+
+
+#cmakedefine HAVE_SERVER_PYTHON_PLUGINS
+
+
+
+#endif //__dmpconfig_h_in__

+/* src/interfaces/ecpg/include/ecpg_config.h.  Generated from ecpg_config.h.in by configure.  */
+/* Define to 1 if the system has the type `int64'. */
+/* #undef HAVE_INT64 */
+
+/* Define to 1 if `long int' works and is 64 bits. */
+#define HAVE_LONG_INT_64 1
+
+/* Define to 1 if the system has the type `long long int'. */
+#define HAVE_LONG_LONG_INT 1
+
+/* Define to 1 if `long long int' works and is 64 bits. */
+/* #undef HAVE_LONG_LONG_INT_64 */
+
+/* Define to 1 to build client libraries as thread-safe code.
+ *    (--enable-thread-safety) */
+#define ENABLE_THREAD_SAFETY 1

+/*
+ * This file contains stuff needed to be as compatible to Informix as possible.
+ * src/interfaces/ecpg/include/ecpg_informix.h
+ */
+#ifndef _ECPG_INFORMIX_H
+#define _ECPG_INFORMIX_H
+
+#include <ecpglib.h>
+#include <pgtypes_date.h>
+#include <pgtypes_interval.h>
+#include <pgtypes_numeric.h>
+#include <pgtypes_timestamp.h>
+
+#define SQLNOTFOUND 100
+
+#define ECPG_INFORMIX_NUM_OVERFLOW	-1200
+#define ECPG_INFORMIX_NUM_UNDERFLOW -1201
+#define ECPG_INFORMIX_DIVIDE_ZERO	-1202
+#define ECPG_INFORMIX_BAD_YEAR		-1204
+#define ECPG_INFORMIX_BAD_MONTH		-1205
+#define ECPG_INFORMIX_BAD_DAY		-1206
+#define ECPG_INFORMIX_ENOSHORTDATE	-1209
+#define ECPG_INFORMIX_DATE_CONVERT	-1210
+#define ECPG_INFORMIX_OUT_OF_MEMORY -1211
+#define ECPG_INFORMIX_ENOTDMY		-1212
+#define ECPG_INFORMIX_BAD_NUMERIC	-1213
+#define ECPG_INFORMIX_BAD_EXPONENT	-1216
+#define ECPG_INFORMIX_BAD_DATE		-1218
+#define ECPG_INFORMIX_EXTRA_CHARS	-1264
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+extern int	rdatestr(date, char *);
+extern void rtoday(date *);
+extern int	rjulmdy(date, short *);
+extern int	rdefmtdate(date *, const char *, const char *);
+extern int	rfmtdate(date, const char *, char *);
+extern int	rmdyjul(short *, date *);
+extern int	rstrdate(const char *, date *);
+extern int	rdayofweek(date);
+
+extern int	rfmtlong(long, const char *, char *);
+extern int	rgetmsg(int, char *, int);
+extern int	risnull(int, const char *);
+extern int	rsetnull(int, char *);
+extern int	rtypalign(int, int);
+extern int	rtypmsize(int, int);
+extern int	rtypwidth(int, int);
+extern void rupshift(char *);
+
+extern int	byleng(char *, int);
+extern void ldchar(char *, int, char *);
+
+extern void ECPG_informix_set_var(int, void *, int);
+extern void *ECPG_informix_get_var(int);
+extern void ECPG_informix_reset_sqlca(void);
+
+/* Informix defines these in decimal.h */
+int			decadd(decimal *, decimal *, decimal *);
+int			deccmp(decimal *, decimal *);
+void		deccopy(decimal *, decimal *);
+int			deccvasc(const char *, int, decimal *);
+int			deccvdbl(double, decimal *);
+int			deccvint(int, decimal *);
+int			deccvlong(long, decimal *);
+int			decdiv(decimal *, decimal *, decimal *);
+int			decmul(decimal *, decimal *, decimal *);
+int			decsub(decimal *, decimal *, decimal *);
+int			dectoasc(decimal *, char *, int, int);
+int			dectodbl(decimal *, double *);
+int			dectoint(decimal *, int *);
+int			dectolong(decimal *, long *);
+
+/* Informix defines these in datetime.h */
+extern void dtcurrent(timestamp *);
+extern int	dtcvasc(char *, timestamp *);
+extern int	dtsub(timestamp *, timestamp *, interval *);
+extern int	dttoasc(timestamp *, char *);
+extern int	dttofmtasc(timestamp *, char *, int, char *);
+extern int	intoasc(interval *, char *);
+extern int	dtcvfmtasc(char *, char *, timestamp *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif							/* ndef _ECPG_INFORMIX_H */

+/* src/interfaces/ecpg/include/ecpgerrno.h */
+
+#ifndef _ECPG_ERRNO_H
+#define _ECPG_ERRNO_H
+
+#include <errno.h>
+
+/* This is a list of all error codes the embedded SQL program can return */
+#define ECPG_NO_ERROR		0
+#define ECPG_NOT_FOUND		100
+
+/* system error codes returned by ecpglib get the correct number,
+ * but are made negative
+ */
+#define ECPG_OUT_OF_MEMORY	-ENOMEM
+
+/* first we have a set of ecpg messages, they start at 200 */
+#define ECPG_UNSUPPORTED		-200
+#define ECPG_TOO_MANY_ARGUMENTS		-201
+#define ECPG_TOO_FEW_ARGUMENTS		-202
+#define ECPG_TOO_MANY_MATCHES		-203
+#define ECPG_INT_FORMAT			-204
+#define ECPG_UINT_FORMAT		-205
+#define ECPG_FLOAT_FORMAT		-206
+#define ECPG_NUMERIC_FORMAT		-207
+#define ECPG_INTERVAL_FORMAT		-208
+#define ECPG_DATE_FORMAT		-209
+#define ECPG_TIMESTAMP_FORMAT		-210
+#define ECPG_CONVERT_BOOL		-211
+#define ECPG_EMPTY			-212
+#define ECPG_MISSING_INDICATOR		-213
+#define ECPG_NO_ARRAY			-214
+#define ECPG_DATA_NOT_ARRAY		-215
+#define ECPG_ARRAY_INSERT		-216
+
+#define ECPG_NO_CONN			-220
+#define ECPG_NOT_CONN			-221
+
+#define ECPG_INVALID_STMT		-230
+
+/* dynamic SQL related */
+#define ECPG_UNKNOWN_DESCRIPTOR		-240
+#define ECPG_INVALID_DESCRIPTOR_INDEX	-241
+#define ECPG_UNKNOWN_DESCRIPTOR_ITEM	-242
+#define ECPG_VAR_NOT_NUMERIC		-243
+#define ECPG_VAR_NOT_CHAR		-244
+
+/* finally the backend error messages, they start at 400 */
+#define ECPG_PGSQL			-400
+#define ECPG_TRANS			-401
+#define ECPG_CONNECT			-402
+#define ECPG_DUPLICATE_KEY		-403
+#define ECPG_SUBSELECT_NOT_ONE		-404
+
+/* for compatibility we define some different error codes for the same error
+ * if adding a new one make sure to not double define it */
+#define ECPG_INFORMIX_DUPLICATE_KEY -239
+#define ECPG_INFORMIX_SUBSELECT_NOT_ONE -284
+
+/* backend WARNINGs, starting at 600 */
+#define ECPG_WARNING_UNRECOGNIZED	   -600
+ /* WARNING:  (transaction aborted): queries ignored until END */
+
+ /*
+  * WARNING:  current transaction is aborted, queries ignored until end of
+  * transaction block
+  */
+#define ECPG_WARNING_QUERY_IGNORED	   -601
+ /* WARNING:  PerformPortalClose: portal "*" not found */
+#define ECPG_WARNING_UNKNOWN_PORTAL    -602
+ /* WARNING:  BEGIN: already a transaction in progress */
+#define ECPG_WARNING_IN_TRANSACTION    -603
+ /* WARNING:  AbortTransaction and not in in-progress state */
+ /* WARNING:  COMMIT: no transaction in progress */
+#define ECPG_WARNING_NO_TRANSACTION    -604
+ /* WARNING:  BlankPortalAssignName: portal * already exists */
+#define ECPG_WARNING_PORTAL_EXISTS	   -605
+
+#endif							/* !_ECPG_ERRNO_H */

+/*
+ * this is a small part of c.h since we don't want to leak all postgres
+ * definitions into ecpg programs
+ * src/interfaces/ecpg/include/ecpglib.h
+ */
+
+#ifndef _ECPGLIB_H
+#define _ECPGLIB_H
+
+#include "libpq-fe.h"
+#include "ecpgtype.h"
+#include "sqlca.h"
+#include <string.h>
+
+#ifdef ENABLE_NLS
+extern char *ecpg_gettext(const char *msgid) pg_attribute_format_arg(1);
+#else
+#define ecpg_gettext(x) (x)
+#endif
+
+#ifndef __cplusplus
+#ifndef bool
+#define bool char
+#endif							/* ndef bool */
+
+#ifndef true
+#define true	((bool) 1)
+#endif							/* ndef true */
+#ifndef false
+#define false	((bool) 0)
+#endif							/* ndef false */
+#endif							/* not C++ */
+
+#ifndef TRUE
+#define TRUE	1
+#endif							/* TRUE */
+
+#ifndef FALSE
+#define FALSE	0
+#endif							/* FALSE */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+void		ECPGdebug(int, FILE *);
+bool		ECPGstatus(int, const char *);
+bool		ECPGsetcommit(int, const char *, const char *);
+bool		ECPGsetconn(int, const char *);
+bool		ECPGconnect(int, int, const char *, const char *, const char *, const char *, int);
+bool		ECPGdo(const int, const int, const int, const char *, const bool, const int, const char *,...);
+bool		ECPGtrans(int, const char *, const char *);
+bool		ECPGdisconnect(int, const char *);
+bool		ECPGprepare(int, const char *, const bool, const char *, const char *);
+bool		ECPGdeallocate(int, int, const char *, const char *);
+bool		ECPGdeallocate_all(int, int, const char *);
+char	   *ECPGprepared_statement(const char *, const char *, int);
+PGconn	   *ECPGget_PGconn(const char *);
+PGTransactionStatusType ECPGtransactionStatus(const char *);
+
+char	   *ECPGerrmsg(void);
+
+ /* print an error message */
+void		sqlprint(void);
+
+/* define this for simplicity as well as compatibility */
+
+#define		SQLCODE		sqlca.sqlcode
+#define		SQLSTATE		sqlca.sqlstate
+
+/* dynamic SQL */
+
+bool		ECPGdo_descriptor(int, const char *, const char *, const char *);
+bool		ECPGdeallocate_desc(int, const char *);
+bool		ECPGallocate_desc(int, const char *);
+bool		ECPGget_desc_header(int, const char *, int *);
+bool		ECPGget_desc(int, const char *, int,...);
+bool		ECPGset_desc_header(int, const char *, int);
+bool		ECPGset_desc(int, const char *, int,...);
+
+void		ECPGset_noind_null(enum ECPGttype, void *);
+bool		ECPGis_noind_null(enum ECPGttype, const void *);
+bool		ECPGdescribe(int, int, bool, const char *, const char *,...);
+
+void		ECPGset_var(int, void *, int);
+void	   *ECPGget_var(int number);
+
+/* dynamic result allocation */
+void		ECPGfree_auto_mem(void);
+
+#ifdef ENABLE_THREAD_SAFETY
+void		ecpg_pthreads_init(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif							/* _ECPGLIB_H */

+/*
+ * This file implements a data structure that is built and maintained by the
+ * preprocessor.
+ *
+ * All types that can be handled for host variable declarations has to
+ * be handled eventually.
+ *
+ * src/interfaces/ecpg/include/ecpgtype.h
+ */
+
+/*
+ * Here are all the types that we are to handle. Note that it is the type
+ * that is registered and that has nothing whatsoever to do with the storage
+ * class.
+ *
+ * Simple types
+ * integers: char, short, int, long (signed and unsigned)
+ * floats: float, double
+ *
+ * Complex types:
+ * VARCHAR, VARCHAR2 - Strings with length (maxlen is given in the declaration)
+ * Arrays of simple types and of VARCHAR, VARCHAR2 (size given in declaration)
+ * Records build of simple types, arrays and other structs.
+ *
+ * Complicating things:
+ * typedefs and struct names!
+ *
+ * Conclusion:
+ * This is a typically recursive definition. A structure of typed list elements
+ * would probably work fine:
+ */
+
+#ifndef _ECPGTYPE_H
+#define _ECPGTYPE_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+enum ECPGttype
+{
+	ECPGt_char = 1, ECPGt_unsigned_char, ECPGt_short, ECPGt_unsigned_short,
+	ECPGt_int, ECPGt_unsigned_int, ECPGt_long, ECPGt_unsigned_long,
+	ECPGt_long_long, ECPGt_unsigned_long_long,
+	ECPGt_bool,
+	ECPGt_float, ECPGt_double,
+	ECPGt_varchar, ECPGt_varchar2,
+	ECPGt_numeric,				/* this is a decimal that stores its digits in
+								 * a malloced array */
+	ECPGt_decimal,				/* this is a decimal that stores its digits in
+								 * a fixed array */
+	ECPGt_date,
+	ECPGt_timestamp,
+	ECPGt_interval,
+	ECPGt_array,
+	ECPGt_struct,
+	ECPGt_union,
+	ECPGt_descriptor,			/* sql descriptor, no C variable */
+	ECPGt_char_variable,
+	ECPGt_const,				/* a constant is needed sometimes */
+	ECPGt_EOIT,					/* End of insert types. */
+	ECPGt_EORT,					/* End of result types. */
+	ECPGt_NO_INDICATOR,			/* no indicator */
+	ECPGt_string,				/* trimmed (char *) type */
+	ECPGt_sqlda					/* C struct descriptor */
+};
+
+ /* descriptor items */
+enum ECPGdtype
+{
+	ECPGd_count = 1,
+	ECPGd_data,
+	ECPGd_di_code,
+	ECPGd_di_precision,
+	ECPGd_indicator,
+	ECPGd_key_member,
+	ECPGd_length,
+	ECPGd_name,
+	ECPGd_nullable,
+	ECPGd_octet,
+	ECPGd_precision,
+	ECPGd_ret_length,
+	ECPGd_ret_octet,
+	ECPGd_scale,
+	ECPGd_type,
+	ECPGd_EODT,					/* End of descriptor types. */
+	ECPGd_cardinality
+};
+
+#define IS_SIMPLE_TYPE(type) (((type) >= ECPGt_char && (type) <= ECPGt_interval) || ((type) == ECPGt_string))
+
+/* we also have to handle different statement types */
+enum ECPG_statement_type
+{
+	ECPGst_normal,
+	ECPGst_execute,
+	ECPGst_exec_immediate,
+	ECPGst_prepnormal
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif							/* _ECPGTYPE_H */

+/* src/interfaces/ecpg/include/datetime.h */
+
+#ifndef _ECPG_DATETIME_H
+#define _ECPG_DATETIME_H
+
+#include <ecpg_informix.h>
+
+/* source created by ecpg which defines these symbols */
+#ifndef _ECPGLIB_H
+typedef timestamp dtime_t;
+typedef interval intrvl_t;
+#endif							/* ndef _ECPGLIB_H */
+
+#endif							/* ndef _ECPG_DATETIME_H */

+/* src/interfaces/ecpg/include/decimal.h */
+
+#ifndef _ECPG_DECIMAL_H
+#define _ECPG_DECIMAL_H
+
+#include <ecpg_informix.h>
+
+/* source created by ecpg which defines this */
+#ifndef _ECPGLIB_H
+typedef decimal dec_t;
+#endif							/* ndef _ECPGLIB_H */
+
+#endif							/* ndef _ECPG_DECIMAL_H */

+#ifndef ECPG_SQLTYPES_H
+#define ECPG_SQLTYPES_H
+
+#include <limits.h>
+
+#define CCHARTYPE	ECPGt_char
+#define CSHORTTYPE	ECPGt_short
+#define CINTTYPE	ECPGt_int
+#define CLONGTYPE	ECPGt_long
+#define CFLOATTYPE	ECPGt_float
+#define CDOUBLETYPE ECPGt_double
+#define CDECIMALTYPE	ECPGt_decimal
+#define CFIXCHARTYPE	108
+#define CSTRINGTYPE ECPGt_char
+#define CDATETYPE	ECPGt_date
+#define CMONEYTYPE	111
+#define CDTIMETYPE	ECPGt_timestamp
+#define CLOCATORTYPE	113
+#define CVCHARTYPE	ECPGt_varchar
+#define CINVTYPE	115
+#define CFILETYPE	116
+#define CINT8TYPE	ECPGt_long_long
+#define CCOLLTYPE		118
+#define CLVCHARTYPE		119
+#define CFIXBINTYPE		120
+#define CVARBINTYPE		121
+#define CBOOLTYPE		ECPGt_bool
+#define CROWTYPE		123
+#define CLVCHARPTRTYPE	124
+#define CTYPEMAX	25
+
+/*
+ * Values used in sqlda->sqlvar[i]->sqltype
+ */
+#define SQLCHAR		ECPGt_char
+#define SQLSMINT	ECPGt_short
+#define SQLINT		ECPGt_int
+#define SQLFLOAT	ECPGt_double
+#define SQLSMFLOAT	ECPGt_float
+#define SQLDECIMAL	ECPGt_decimal
+#define SQLSERIAL	ECPGt_int
+#define SQLDATE		ECPGt_date
+#define SQLDTIME	ECPGt_timestamp
+#define SQLTEXT		ECPGt_char
+#define SQLVCHAR	ECPGt_char
+#define SQLINTERVAL		ECPGt_interval
+#define SQLNCHAR	ECPGt_char
+#define SQLNVCHAR	ECPGt_char
+#ifdef HAVE_LONG_LONG_INT_64
+#define SQLINT8		ECPGt_long_long
+#define SQLSERIAL8	ECPGt_long_long
+#else
+#define SQLINT8		ECPGt_long
+#define SQLSERIAL8	ECPGt_long
+#endif
+
+#endif							/* ndef ECPG_SQLTYPES_H */

+/*-------------------------------------------------------------------------
+ *
+ * c.h
+ *	  Fundamental C definitions.  This is included by every .c file in
+ *	  PostgreSQL (via either postgres.h or postgres_fe.h, as appropriate).
+ *
+ *	  Note that the definitions here are not intended to be exposed to clients
+ *	  of the frontend interface libraries --- so we don't worry much about
+ *	  polluting the namespace with lots of stuff...
+ *
+ *
+ * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/c.h
+ *
+ *-------------------------------------------------------------------------
+ */
+/*
+ *----------------------------------------------------------------
+ *	 TABLE OF CONTENTS
+ *
+ *		When adding stuff to this file, please try to put stuff
+ *		into the relevant section, or add new sections as appropriate.
+ *
+ *	  section	description
+ *	  -------	------------------------------------------------
+ *		0)		pg_config.h and standard system headers
+ *		1)		compiler characteristics
+ *		2)		bool, true, false
+ *		3)		standard system types
+ *		4)		IsValid macros for system types
+ *		5)		offsetof, lengthof, alignment
+ *		6)		assertions
+ *		7)		widely useful macros
+ *		8)		random stuff
+ *		9)		system-specific hacks
+ *
+ * NOTE: since this file is included by both frontend and backend modules,
+ * it's usually wrong to put an "extern" declaration here, unless it's
+ * ifdef'd so that it's seen in only one case or the other.
+ * typedefs and macros are the kind of thing that might go here.
+ *
+ *----------------------------------------------------------------
+ */
+#ifndef C_H
+#define C_H
+
+#include "postgres_ext.h"
+
+/* Must undef pg_config_ext.h symbols before including pg_config.h */
+#undef PG_INT64_TYPE
+
+#include "pg_config.h"
+#include "pg_config_manual.h"	/* must be after pg_config.h */
+#include "pg_config_os.h"		/* must be before any system header files */
+
+/* System header files that should be available everywhere in Postgres */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stddef.h>
+#include <stdarg.h>
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
+#include <sys/types.h>
+#include <errno.h>
+#if defined(WIN32) || defined(__CYGWIN__)
+#include <fcntl.h>				/* ensure O_BINARY is available */
+#endif
+#include <locale.h>
+#ifdef ENABLE_NLS
+#include <libintl.h>
+#endif
+
+
+/* ----------------------------------------------------------------
+ *				Section 1: compiler characteristics
+ *
+ * type prefixes (const, signed, volatile, inline) are handled in pg_config.h.
+ * ----------------------------------------------------------------
+ */
+
+/*
+ * Disable "inline" if PG_FORCE_DISABLE_INLINE is defined.
+ * This is used to work around compiler bugs and might also be useful for
+ * investigatory purposes.
+ */
+#ifdef PG_FORCE_DISABLE_INLINE
+#undef inline
+#define inline
+#endif
+
+/*
+ * Attribute macros
+ *
+ * GCC: https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
+ * GCC: https://gcc.gnu.org/onlinedocs/gcc/Type-Attributes.html
+ * Sunpro: https://docs.oracle.com/cd/E18659_01/html/821-1384/gjzke.html
+ * XLC: http://www-01.ibm.com/support/knowledgecenter/SSGH2K_11.1.0/com.ibm.xlc111.aix.doc/language_ref/function_attributes.html
+ * XLC: http://www-01.ibm.com/support/knowledgecenter/SSGH2K_11.1.0/com.ibm.xlc111.aix.doc/language_ref/type_attrib.html
+ */
+
+/* only GCC supports the unused attribute */
+#ifdef __GNUC__
+#define pg_attribute_unused() __attribute__((unused))
+#else
+#define pg_attribute_unused()
+#endif
+
+/*
+ * Append PG_USED_FOR_ASSERTS_ONLY to definitions of variables that are only
+ * used in assert-enabled builds, to avoid compiler warnings about unused
+ * variables in assert-disabled builds.
+ */
+#ifdef USE_ASSERT_CHECKING
+#define PG_USED_FOR_ASSERTS_ONLY
+#else
+#define PG_USED_FOR_ASSERTS_ONLY pg_attribute_unused()
+#endif
+
+/* GCC and XLC support format attributes */
+#if defined(__GNUC__) || defined(__IBMC__)
+#define pg_attribute_format_arg(a) __attribute__((format_arg(a)))
+#define pg_attribute_printf(f,a) __attribute__((format(PG_PRINTF_ATTRIBUTE, f, a)))
+#else
+#define pg_attribute_format_arg(a)
+#define pg_attribute_printf(f,a)
+#endif
+
+/* GCC, Sunpro and XLC support aligned, packed and noreturn */
+#if defined(__GNUC__) || defined(__SUNPRO_C) || defined(__IBMC__)
+#define pg_attribute_aligned(a) __attribute__((aligned(a)))
+#define pg_attribute_noreturn() __attribute__((noreturn))
+#define pg_attribute_packed() __attribute__((packed))
+#define HAVE_PG_ATTRIBUTE_NORETURN 1
+#else
+/*
+ * NB: aligned and packed are not given default definitions because they
+ * affect code functionality; they *must* be implemented by the compiler
+ * if they are to be used.
+ */
+#define pg_attribute_noreturn()
+#endif
+
+/*
+ * Use "pg_attribute_always_inline" in place of "inline" for functions that
+ * we wish to force inlining of, even when the compiler's heuristics would
+ * choose not to.  But, if possible, don't force inlining in unoptimized
+ * debug builds.
+ */
+#if (defined(__GNUC__) && __GNUC__ > 3 && defined(__OPTIMIZE__)) || defined(__SUNPRO_C) || defined(__IBMC__)
+/* GCC > 3, Sunpro and XLC support always_inline via __attribute__ */
+#define pg_attribute_always_inline __attribute__((always_inline)) inline
+#elif defined(_MSC_VER)
+/* MSVC has a special keyword for this */
+#define pg_attribute_always_inline __forceinline
+#else
+/* Otherwise, the best we can do is to say "inline" */
+#define pg_attribute_always_inline inline
+#endif
+
+/*
+ * Forcing a function not to be inlined can be useful if it's the slow path of
+ * a performance-critical function, or should be visible in profiles to allow
+ * for proper cost attribution.  Note that unlike the pg_attribute_XXX macros
+ * above, this should be placed before the function's return type and name.
+ */
+/* GCC, Sunpro and XLC support noinline via __attribute__ */
+#if (defined(__GNUC__) && __GNUC__ > 2) || defined(__SUNPRO_C) || defined(__IBMC__)
+#define pg_noinline __attribute__((noinline))
+/* msvc via declspec */
+#elif defined(_MSC_VER)
+#define pg_noinline __declspec(noinline)
+#else
+#define pg_noinline
+#endif
+
+/*
+ * Mark a point as unreachable in a portable fashion.  This should preferably
+ * be something that the compiler understands, to aid code generation.
+ * In assert-enabled builds, we prefer abort() for debugging reasons.
+ */
+#if defined(HAVE__BUILTIN_UNREACHABLE) && !defined(USE_ASSERT_CHECKING)
+#define pg_unreachable() __builtin_unreachable()
+#elif defined(_MSC_VER) && !defined(USE_ASSERT_CHECKING)
+#define pg_unreachable() __assume(0)
+#else
+#define pg_unreachable() abort()
+#endif
+
+/*
+ * Hints to the compiler about the likelihood of a branch. Both likely() and
+ * unlikely() return the boolean value of the contained expression.
+ *
+ * These should only be used sparingly, in very hot code paths. It's very easy
+ * to mis-estimate likelihoods.
+ */
+#if __GNUC__ >= 3
+#define likely(x)	__builtin_expect((x) != 0, 1)
+#define unlikely(x) __builtin_expect((x) != 0, 0)
+#else
+#define likely(x)	((x) != 0)
+#define unlikely(x) ((x) != 0)
+#endif
+
+/*
+ * CppAsString
+ *		Convert the argument to a string, using the C preprocessor.
+ * CppAsString2
+ *		Convert the argument to a string, after one round of macro expansion.
+ * CppConcat
+ *		Concatenate two arguments together, using the C preprocessor.
+ *
+ * Note: There used to be support here for pre-ANSI C compilers that didn't
+ * support # and ##.  Nowadays, these macros are just for clarity and/or
+ * backward compatibility with existing PostgreSQL code.
+ */
+#define CppAsString(identifier) #identifier
+#define CppAsString2(x)			CppAsString(x)
+#define CppConcat(x, y)			x##y
+
+/*
+ * dummyret is used to set return values in macros that use ?: to make
+ * assignments.  gcc wants these to be void, other compilers like char
+ */
+#ifdef __GNUC__					/* GNU cc */
+#define dummyret	void
+#else
+#define dummyret	char
+#endif
+
+/* Which __func__ symbol do we have, if any? */
+#ifdef HAVE_FUNCNAME__FUNC
+#define PG_FUNCNAME_MACRO	__func__
+#else
+#ifdef HAVE_FUNCNAME__FUNCTION
+#define PG_FUNCNAME_MACRO	__FUNCTION__
+#else
+#define PG_FUNCNAME_MACRO	NULL
+#endif
+#endif
+
+
+/* ----------------------------------------------------------------
+ *				Section 2:	bool, true, false
+ * ----------------------------------------------------------------
+ */
+
+/*
+ * bool
+ *		Boolean value, either true or false.
+ *
+ * Use stdbool.h if available and its bool has size 1.  That's useful for
+ * better compiler and debugger output and for compatibility with third-party
+ * libraries.  But PostgreSQL currently cannot deal with bool of other sizes;
+ * there are static assertions around the code to prevent that.
+ *
+ * For C++ compilers, we assume the compiler has a compatible built-in
+ * definition of bool.
+ */
+
+#ifndef __cplusplus
+
+#if defined(HAVE_STDBOOL_H) && SIZEOF_BOOL == 1
+#include <stdbool.h>
+#define USE_STDBOOL 1
+#else
+
+#ifndef bool
+typedef char bool;
+#endif
+
+#ifndef true
+#define true	((bool) 1)
+#endif
+
+#ifndef false
+#define false	((bool) 0)
+#endif
+
+#endif
+#endif							/* not C++ */
+
+
+/* ----------------------------------------------------------------
+ *				Section 3:	standard system types
+ * ----------------------------------------------------------------
+ */
+
+/*
+ * Pointer
+ *		Variable holding address of any memory resident object.
+ *
+ *		XXX Pointer arithmetic is done with this, so it can't be void *
+ *		under "true" ANSI compilers.
+ */
+typedef char *Pointer;
+
+/*
+ * intN
+ *		Signed integer, EXACTLY N BITS IN SIZE,
+ *		used for numerical computations and the
+ *		frontend/backend protocol.
+ */
+#ifndef HAVE_INT8
+typedef signed char int8;		/* == 8 bits */
+typedef signed short int16;		/* == 16 bits */
+typedef signed int int32;		/* == 32 bits */
+#endif							/* not HAVE_INT8 */
+
+/*
+ * uintN
+ *		Unsigned integer, EXACTLY N BITS IN SIZE,
+ *		used for numerical computations and the
+ *		frontend/backend protocol.
+ */
+#ifndef HAVE_UINT8
+typedef unsigned char uint8;	/* == 8 bits */
+typedef unsigned short uint16;	/* == 16 bits */
+typedef unsigned int uint32;	/* == 32 bits */
+#endif							/* not HAVE_UINT8 */
+
+/*
+ * bitsN
+ *		Unit of bitwise operation, AT LEAST N BITS IN SIZE.
+ */
+typedef uint8 bits8;			/* >= 8 bits */
+typedef uint16 bits16;			/* >= 16 bits */
+typedef uint32 bits32;			/* >= 32 bits */
+
+/*
+ * 64-bit integers
+ */
+#ifdef HAVE_LONG_INT_64
+/* Plain "long int" fits, use it */
+
+#ifndef HAVE_INT64
+typedef long int int64;
+#endif
+#ifndef HAVE_UINT64
+typedef unsigned long int uint64;
+#endif
+#define INT64CONST(x)  (x##L)
+#define UINT64CONST(x) (x##UL)
+#elif defined(HAVE_LONG_LONG_INT_64)
+/* We have working support for "long long int", use that */
+
+#ifndef HAVE_INT64
+typedef long long int int64;
+#endif
+#ifndef HAVE_UINT64
+typedef unsigned long long int uint64;
+#endif
+#define INT64CONST(x)  (x##LL)
+#define UINT64CONST(x) (x##ULL)
+#else
+/* neither HAVE_LONG_INT_64 nor HAVE_LONG_LONG_INT_64 */
+#error must have a working 64-bit integer datatype
+#endif
+
+/* snprintf format strings to use for 64-bit integers */
+#define INT64_FORMAT "%" INT64_MODIFIER "d"
+#define UINT64_FORMAT "%" INT64_MODIFIER "u"
+
+/*
+ * 128-bit signed and unsigned integers
+ *		There currently is only limited support for such types.
+ *		E.g. 128bit literals and snprintf are not supported; but math is.
+ *		Also, because we exclude such types when choosing MAXIMUM_ALIGNOF,
+ *		it must be possible to coerce the compiler to allocate them on no
+ *		more than MAXALIGN boundaries.
+ */
+#if defined(PG_INT128_TYPE)
+#if defined(pg_attribute_aligned) || ALIGNOF_PG_INT128_TYPE <= MAXIMUM_ALIGNOF
+#define HAVE_INT128 1
+
+typedef PG_INT128_TYPE int128
+#if defined(pg_attribute_aligned)
+pg_attribute_aligned(MAXIMUM_ALIGNOF)
+#endif
+;
+
+typedef unsigned PG_INT128_TYPE uint128
+#if defined(pg_attribute_aligned)
+pg_attribute_aligned(MAXIMUM_ALIGNOF)
+#endif
+;
+
+#endif
+#endif
+
+/*
+ * stdint.h limits aren't guaranteed to be present and aren't guaranteed to
+ * have compatible types with our fixed width types. So just define our own.
+ */
+#define PG_INT8_MIN		(-0x7F-1)
+#define PG_INT8_MAX		(0x7F)
+#define PG_UINT8_MAX	(0xFF)
+#define PG_INT16_MIN	(-0x7FFF-1)
+#define PG_INT16_MAX	(0x7FFF)
+#define PG_UINT16_MAX	(0xFFFF)
+#define PG_INT32_MIN	(-0x7FFFFFFF-1)
+#define PG_INT32_MAX	(0x7FFFFFFF)
+#define PG_UINT32_MAX	(0xFFFFFFFFU)
+#define PG_INT64_MIN	(-INT64CONST(0x7FFFFFFFFFFFFFFF) - 1)
+#define PG_INT64_MAX	INT64CONST(0x7FFFFFFFFFFFFFFF)
+#define PG_UINT64_MAX	UINT64CONST(0xFFFFFFFFFFFFFFFF)
+
+/* Max value of size_t might also be missing if we don't have stdint.h */
+#ifndef SIZE_MAX
+#if SIZEOF_SIZE_T == 8
+#define SIZE_MAX PG_UINT64_MAX
+#else
+#define SIZE_MAX PG_UINT32_MAX
+#endif
+#endif
+
+/*
+ * We now always use int64 timestamps, but keep this symbol defined for the
+ * benefit of external code that might test it.
+ */
+#define HAVE_INT64_TIMESTAMP
+
+/*
+ * Size
+ *		Size of any memory resident object, as returned by sizeof.
+ */
+typedef size_t Size;
+
+/*
+ * Index
+ *		Index into any memory resident array.
+ *
+ * Note:
+ *		Indices are non negative.
+ */
+typedef unsigned int Index;
+
+/*
+ * Offset
+ *		Offset into any memory resident array.
+ *
+ * Note:
+ *		This differs from an Index in that an Index is always
+ *		non negative, whereas Offset may be negative.
+ */
+typedef signed int Offset;
+
+/*
+ * Common Postgres datatype names (as used in the catalogs)
+ */
+typedef float float4;
+typedef double float8;
+
+/*
+ * Oid, RegProcedure, TransactionId, SubTransactionId, MultiXactId,
+ * CommandId
+ */
+
+/* typedef Oid is in postgres_ext.h */
+
+/*
+ * regproc is the type name used in the include/catalog headers, but
+ * RegProcedure is the preferred name in C code.
+ */
+typedef Oid regproc;
+typedef regproc RegProcedure;
+
+typedef uint32 TransactionId;
+
+typedef uint32 LocalTransactionId;
+
+typedef uint32 SubTransactionId;
+
+#define InvalidSubTransactionId		((SubTransactionId) 0)
+#define TopSubTransactionId			((SubTransactionId) 1)
+
+/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */
+typedef TransactionId MultiXactId;
+
+typedef uint32 MultiXactOffset;
+
+typedef uint32 CommandId;
+
+#define FirstCommandId	((CommandId) 0)
+#define InvalidCommandId	(~(CommandId)0)
+
+/*
+ * Array indexing support
+ */
+#define MAXDIM 6
+typedef struct
+{
+	int			indx[MAXDIM];
+}			IntArray;
+
+/* ----------------
+ *		Variable-length datatypes all share the 'struct varlena' header.
+ *
+ * NOTE: for TOASTable types, this is an oversimplification, since the value
+ * may be compressed or moved out-of-line.  However datatype-specific routines
+ * are mostly content to deal with de-TOASTed values only, and of course
+ * client-side routines should never see a TOASTed value.  But even in a
+ * de-TOASTed value, beware of touching vl_len_ directly, as its
+ * representation is no longer convenient.  It's recommended that code always
+ * use macros VARDATA_ANY, VARSIZE_ANY, VARSIZE_ANY_EXHDR, VARDATA, VARSIZE,
+ * and SET_VARSIZE instead of relying on direct mentions of the struct fields.
+ * See postgres.h for details of the TOASTed form.
+ * ----------------
+ */
+struct varlena
+{
+	char		vl_len_[4];		/* Do not touch this field directly! */
+	char		vl_dat[FLEXIBLE_ARRAY_MEMBER];	/* Data content is here */
+};
+
+#define VARHDRSZ		((int32) sizeof(int32))
+
+/*
+ * These widely-used datatypes are just a varlena header and the data bytes.
+ * There is no terminating null or anything like that --- the data length is
+ * always VARSIZE_ANY_EXHDR(ptr).
+ */
+typedef struct varlena bytea;
+typedef struct varlena text;
+typedef struct varlena BpChar;	/* blank-padded char, ie SQL char(n) */
+typedef struct varlena VarChar; /* var-length char, ie SQL varchar(n) */
+
+/*
+ * Specialized array types.  These are physically laid out just the same
+ * as regular arrays (so that the regular array subscripting code works
+ * with them).  They exist as distinct types mostly for historical reasons:
+ * they have nonstandard I/O behavior which we don't want to change for fear
+ * of breaking applications that look at the system catalogs.  There is also
+ * an implementation issue for oidvector: it's part of the primary key for
+ * pg_proc, and we can't use the normal btree array support routines for that
+ * without circularity.
+ */
+typedef struct
+{
+	int32		vl_len_;		/* these fields must match ArrayType! */
+	int			ndim;			/* always 1 for int2vector */
+	int32		dataoffset;		/* always 0 for int2vector */
+	Oid			elemtype;
+	int			dim1;
+	int			lbound1;
+	int16		values[FLEXIBLE_ARRAY_MEMBER];
+} int2vector;
+
+typedef struct
+{
+	int32		vl_len_;		/* these fields must match ArrayType! */
+	int			ndim;			/* always 1 for oidvector */
+	int32		dataoffset;		/* always 0 for oidvector */
+	Oid			elemtype;
+	int			dim1;
+	int			lbound1;
+	Oid			values[FLEXIBLE_ARRAY_MEMBER];
+} oidvector;
+
+/*
+ * Representation of a Name: effectively just a C string, but null-padded to
+ * exactly NAMEDATALEN bytes.  The use of a struct is historical.
+ */
+typedef struct nameData
+{
+	char		data[NAMEDATALEN];
+} NameData;
+typedef NameData *Name;
+
+#define NameStr(name)	((name).data)
+
+
+/* ----------------------------------------------------------------
+ *				Section 4:	IsValid macros for system types
+ * ----------------------------------------------------------------
+ */
+/*
+ * BoolIsValid
+ *		True iff bool is valid.
+ */
+#define BoolIsValid(boolean)	((boolean) == false || (boolean) == true)
+
+/*
+ * PointerIsValid
+ *		True iff pointer is valid.
+ */
+#define PointerIsValid(pointer) ((const void*)(pointer) != NULL)
+
+/*
+ * PointerIsAligned
+ *		True iff pointer is properly aligned to point to the given type.
+ */
+#define PointerIsAligned(pointer, type) \
+		(((uintptr_t)(pointer) % (sizeof (type))) == 0)
+
+#define OffsetToPointer(base, offset) \
+		((void *)((char *) base + offset))
+
+#define OidIsValid(objectId)  ((bool) ((objectId) != InvalidOid))
+
+#define RegProcedureIsValid(p)	OidIsValid(p)
+
+
+/* ----------------------------------------------------------------
+ *				Section 5:	offsetof, lengthof, alignment
+ * ----------------------------------------------------------------
+ */
+/*
+ * offsetof
+ *		Offset of a structure/union field within that structure/union.
+ *
+ *		XXX This is supposed to be part of stddef.h, but isn't on
+ *		some systems (like SunOS 4).
+ */
+#ifndef offsetof
+#define offsetof(type, field)	((long) &((type *)0)->field)
+#endif							/* offsetof */
+
+/*
+ * lengthof
+ *		Number of elements in an array.
+ */
+#define lengthof(array) (sizeof (array) / sizeof ((array)[0]))
+
+/* ----------------
+ * Alignment macros: align a length or address appropriately for a given type.
+ * The fooALIGN() macros round up to a multiple of the required alignment,
+ * while the fooALIGN_DOWN() macros round down.  The latter are more useful
+ * for problems like "how many X-sized structures will fit in a page?".
+ *
+ * NOTE: TYPEALIGN[_DOWN] will not work if ALIGNVAL is not a power of 2.
+ * That case seems extremely unlikely to be needed in practice, however.
+ *
+ * NOTE: MAXIMUM_ALIGNOF, and hence MAXALIGN(), intentionally exclude any
+ * larger-than-8-byte types the compiler might have.
+ * ----------------
+ */
+
+#define TYPEALIGN(ALIGNVAL,LEN)  \
+	(((uintptr_t) (LEN) + ((ALIGNVAL) - 1)) & ~((uintptr_t) ((ALIGNVAL) - 1)))
+
+#define SHORTALIGN(LEN)			TYPEALIGN(ALIGNOF_SHORT, (LEN))
+#define INTALIGN(LEN)			TYPEALIGN(ALIGNOF_INT, (LEN))
+#define LONGALIGN(LEN)			TYPEALIGN(ALIGNOF_LONG, (LEN))
+#define DOUBLEALIGN(LEN)		TYPEALIGN(ALIGNOF_DOUBLE, (LEN))
+#define MAXALIGN(LEN)			TYPEALIGN(MAXIMUM_ALIGNOF, (LEN))
+/* MAXALIGN covers only built-in types, not buffers */
+#define BUFFERALIGN(LEN)		TYPEALIGN(ALIGNOF_BUFFER, (LEN))
+#define CACHELINEALIGN(LEN)		TYPEALIGN(PG_CACHE_LINE_SIZE, (LEN))
+
+#define TYPEALIGN_DOWN(ALIGNVAL,LEN)  \
+	(((uintptr_t) (LEN)) & ~((uintptr_t) ((ALIGNVAL) - 1)))
+
+#define SHORTALIGN_DOWN(LEN)	TYPEALIGN_DOWN(ALIGNOF_SHORT, (LEN))
+#define INTALIGN_DOWN(LEN)		TYPEALIGN_DOWN(ALIGNOF_INT, (LEN))
+#define LONGALIGN_DOWN(LEN)		TYPEALIGN_DOWN(ALIGNOF_LONG, (LEN))
+#define DOUBLEALIGN_DOWN(LEN)	TYPEALIGN_DOWN(ALIGNOF_DOUBLE, (LEN))
+#define MAXALIGN_DOWN(LEN)		TYPEALIGN_DOWN(MAXIMUM_ALIGNOF, (LEN))
+#define BUFFERALIGN_DOWN(LEN)	TYPEALIGN_DOWN(ALIGNOF_BUFFER, (LEN))
+
+/*
+ * The above macros will not work with types wider than uintptr_t, like with
+ * uint64 on 32-bit platforms.  That's not problem for the usual use where a
+ * pointer or a length is aligned, but for the odd case that you need to
+ * align something (potentially) wider, use TYPEALIGN64.
+ */
+#define TYPEALIGN64(ALIGNVAL,LEN)  \
+	(((uint64) (LEN) + ((ALIGNVAL) - 1)) & ~((uint64) ((ALIGNVAL) - 1)))
+
+/* we don't currently need wider versions of the other ALIGN macros */
+#define MAXALIGN64(LEN)			TYPEALIGN64(MAXIMUM_ALIGNOF, (LEN))
+
+
+/* ----------------------------------------------------------------
+ *				Section 6:	assertions
+ * ----------------------------------------------------------------
+ */
+
+/*
+ * USE_ASSERT_CHECKING, if defined, turns on all the assertions.
+ * - plai  9/5/90
+ *
+ * It should _NOT_ be defined in releases or in benchmark copies
+ */
+
+/*
+ * Assert() can be used in both frontend and backend code. In frontend code it
+ * just calls the standard assert, if it's available. If use of assertions is
+ * not configured, it does nothing.
+ */
+#ifndef USE_ASSERT_CHECKING
+
+#define Assert(condition)	((void)true)
+#define AssertMacro(condition)	((void)true)
+#define AssertArg(condition)	((void)true)
+#define AssertState(condition)	((void)true)
+#define AssertPointerAlignment(ptr, bndr)	((void)true)
+#define Trap(condition, errorType)	((void)true)
+#define TrapMacro(condition, errorType) (true)
+
+#elif defined(FRONTEND)
+
+#include <assert.h>
+#define Assert(p) assert(p)
+#define AssertMacro(p)	((void) assert(p))
+#define AssertArg(condition) assert(condition)
+#define AssertState(condition) assert(condition)
+#define AssertPointerAlignment(ptr, bndr)	((void)true)
+
+#else							/* USE_ASSERT_CHECKING && !FRONTEND */
+
+/*
+ * Trap
+ *		Generates an exception if the given condition is true.
+ */
+#define Trap(condition, errorType) \
+	do { \
+		if (condition) \
+			ExceptionalCondition(CppAsString(condition), (errorType), \
+								 __FILE__, __LINE__); \
+	} while (0)
+
+/*
+ *	TrapMacro is the same as Trap but it's intended for use in macros:
+ *
+ *		#define foo(x) (AssertMacro(x != 0), bar(x))
+ *
+ *	Isn't CPP fun?
+ */
+#define TrapMacro(condition, errorType) \
+	((bool) (! (condition) || \
+			 (ExceptionalCondition(CppAsString(condition), (errorType), \
+								   __FILE__, __LINE__), 0)))
+
+#define Assert(condition) \
+		Trap(!(condition), "FailedAssertion")
+
+#define AssertMacro(condition) \
+		((void) TrapMacro(!(condition), "FailedAssertion"))
+
+#define AssertArg(condition) \
+		Trap(!(condition), "BadArgument")
+
+#define AssertState(condition) \
+		Trap(!(condition), "BadState")
+
+/*
+ * Check that `ptr' is `bndr' aligned.
+ */
+#define AssertPointerAlignment(ptr, bndr) \
+	Trap(TYPEALIGN(bndr, (uintptr_t)(ptr)) != (uintptr_t)(ptr), \
+		 "UnalignedPointer")
+
+#endif							/* USE_ASSERT_CHECKING && !FRONTEND */
+
+/*
+ * ExceptionalCondition is compiled into the backend whether or not
+ * USE_ASSERT_CHECKING is defined, so as to support use of extensions
+ * that are built with that #define with a backend that isn't.  Hence,
+ * we should declare it as long as !FRONTEND.
+ */
+#ifndef FRONTEND
+extern void ExceptionalCondition(const char *conditionName,
+					 const char *errorType,
+					 const char *fileName, int lineNumber) pg_attribute_noreturn();
+#endif
+
+/*
+ * Macros to support compile-time assertion checks.
+ *
+ * If the "condition" (a compile-time-constant expression) evaluates to false,
+ * throw a compile error using the "errmessage" (a string literal).
+ *
+ * gcc 4.6 and up supports _Static_assert(), but there are bizarre syntactic
+ * placement restrictions.  These macros make it safe to use as a statement
+ * or in an expression, respectively.
+ *
+ * Otherwise we fall back on a kluge that assumes the compiler will complain
+ * about a negative width for a struct bit-field.  This will not include a
+ * helpful error message, but it beats not getting an error at all.
+ */
+#ifndef __cplusplus
+#ifdef HAVE__STATIC_ASSERT
+#define StaticAssertStmt(condition, errmessage) \
+	do { _Static_assert(condition, errmessage); } while(0)
+#define StaticAssertExpr(condition, errmessage) \
+	((void) ({ StaticAssertStmt(condition, errmessage); true; }))
+#else							/* !HAVE__STATIC_ASSERT */
+#define StaticAssertStmt(condition, errmessage) \
+	((void) sizeof(struct { int static_assert_failure : (condition) ? 1 : -1; }))
+#define StaticAssertExpr(condition, errmessage) \
+	StaticAssertStmt(condition, errmessage)
+#endif							/* HAVE__STATIC_ASSERT */
+#else							/* C++ */
+#if defined(__cpp_static_assert) && __cpp_static_assert >= 200410
+#define StaticAssertStmt(condition, errmessage) \
+	static_assert(condition, errmessage)
+#define StaticAssertExpr(condition, errmessage) \
+	({ static_assert(condition, errmessage); })
+#else
+#define StaticAssertStmt(condition, errmessage) \
+	do { struct static_assert_struct { int static_assert_failure : (condition) ? 1 : -1; }; } while(0)
+#define StaticAssertExpr(condition, errmessage) \
+	((void) ({ StaticAssertStmt(condition, errmessage); }))
+#endif
+#endif							/* C++ */
+
+
+/*
+ * Compile-time checks that a variable (or expression) has the specified type.
+ *
+ * AssertVariableIsOfType() can be used as a statement.
+ * AssertVariableIsOfTypeMacro() is intended for use in macros, eg
+ *		#define foo(x) (AssertVariableIsOfTypeMacro(x, int), bar(x))
+ *
+ * If we don't have __builtin_types_compatible_p, we can still assert that
+ * the types have the same size.  This is far from ideal (especially on 32-bit
+ * platforms) but it provides at least some coverage.
+ */
+#ifdef HAVE__BUILTIN_TYPES_COMPATIBLE_P
+#define AssertVariableIsOfType(varname, typename) \
+	StaticAssertStmt(__builtin_types_compatible_p(__typeof__(varname), typename), \
+	CppAsString(varname) " does not have type " CppAsString(typename))
+#define AssertVariableIsOfTypeMacro(varname, typename) \
+	(StaticAssertExpr(__builtin_types_compatible_p(__typeof__(varname), typename), \
+	 CppAsString(varname) " does not have type " CppAsString(typename)))
+#else							/* !HAVE__BUILTIN_TYPES_COMPATIBLE_P */
+#define AssertVariableIsOfType(varname, typename) \
+	StaticAssertStmt(sizeof(varname) == sizeof(typename), \
+	CppAsString(varname) " does not have type " CppAsString(typename))
+#define AssertVariableIsOfTypeMacro(varname, typename) \
+	(StaticAssertExpr(sizeof(varname) == sizeof(typename), \
+	 CppAsString(varname) " does not have type " CppAsString(typename)))
+#endif							/* HAVE__BUILTIN_TYPES_COMPATIBLE_P */
+
+
+/* ----------------------------------------------------------------
+ *				Section 7:	widely useful macros
+ * ----------------------------------------------------------------
+ */
+/*
+ * Max
+ *		Return the maximum of two numbers.
+ */
+#define Max(x, y)		((x) > (y) ? (x) : (y))
+
+/*
+ * Min
+ *		Return the minimum of two numbers.
+ */
+#define Min(x, y)		((x) < (y) ? (x) : (y))
+
+/*
+ * Abs
+ *		Return the absolute value of the argument.
+ */
+#define Abs(x)			((x) >= 0 ? (x) : -(x))
+
+/*
+ * StrNCpy
+ *	Like standard library function strncpy(), except that result string
+ *	is guaranteed to be null-terminated --- that is, at most N-1 bytes
+ *	of the source string will be kept.
+ *	Also, the macro returns no result (too hard to do that without
+ *	evaluating the arguments multiple times, which seems worse).
+ *
+ *	BTW: when you need to copy a non-null-terminated string (like a text
+ *	datum) and add a null, do not do it with StrNCpy(..., len+1).  That
+ *	might seem to work, but it fetches one byte more than there is in the
+ *	text object.  One fine day you'll have a SIGSEGV because there isn't
+ *	another byte before the end of memory.  Don't laugh, we've had real
+ *	live bug reports from real live users over exactly this mistake.
+ *	Do it honestly with "memcpy(dst,src,len); dst[len] = '\0';", instead.
+ */
+#define StrNCpy(dst,src,len) \
+	do \
+	{ \
+		char * _dst = (dst); \
+		Size _len = (len); \
+\
+		if (_len > 0) \
+		{ \
+			strncpy(_dst, (src), _len); \
+			_dst[_len-1] = '\0'; \
+		} \
+	} while (0)
+
+
+/* Get a bit mask of the bits set in non-long aligned addresses */
+#define LONG_ALIGN_MASK (sizeof(long) - 1)
+
+/*
+ * MemSet
+ *	Exactly the same as standard library function memset(), but considerably
+ *	faster for zeroing small word-aligned structures (such as parsetree nodes).
+ *	This has to be a macro because the main point is to avoid function-call
+ *	overhead.   However, we have also found that the loop is faster than
+ *	native libc memset() on some platforms, even those with assembler
+ *	memset() functions.  More research needs to be done, perhaps with
+ *	MEMSET_LOOP_LIMIT tests in configure.
+ */
+#define MemSet(start, val, len) \
+	do \
+	{ \
+		/* must be void* because we don't know if it is integer aligned yet */ \
+		void   *_vstart = (void *) (start); \
+		int		_val = (val); \
+		Size	_len = (len); \
+\
+		if ((((uintptr_t) _vstart) & LONG_ALIGN_MASK) == 0 && \
+			(_len & LONG_ALIGN_MASK) == 0 && \
+			_val == 0 && \
+			_len <= MEMSET_LOOP_LIMIT && \
+			/* \
+			 *	If MEMSET_LOOP_LIMIT == 0, optimizer should find \
+			 *	the whole "if" false at compile time. \
+			 */ \
+			MEMSET_LOOP_LIMIT != 0) \
+		{ \
+			long *_start = (long *) _vstart; \
+			long *_stop = (long *) ((char *) _start + _len); \
+			while (_start < _stop) \
+				*_start++ = 0; \
+		} \
+		else \
+			memset(_vstart, _val, _len); \
+	} while (0)
+
+/*
+ * MemSetAligned is the same as MemSet except it omits the test to see if
+ * "start" is word-aligned.  This is okay to use if the caller knows a-priori
+ * that the pointer is suitably aligned (typically, because he just got it
+ * from palloc(), which always delivers a max-aligned pointer).
+ */
+#define MemSetAligned(start, val, len) \
+	do \
+	{ \
+		long   *_start = (long *) (start); \
+		int		_val = (val); \
+		Size	_len = (len); \
+\
+		if ((_len & LONG_ALIGN_MASK) == 0 && \
+			_val == 0 && \
+			_len <= MEMSET_LOOP_LIMIT && \
+			MEMSET_LOOP_LIMIT != 0) \
+		{ \
+			long *_stop = (long *) ((char *) _start + _len); \
+			while (_start < _stop) \
+				*_start++ = 0; \
+		} \
+		else \
+			memset(_start, _val, _len); \
+	} while (0)
+
+
+/*
+ * MemSetTest/MemSetLoop are a variant version that allow all the tests in
+ * MemSet to be done at compile time in cases where "val" and "len" are
+ * constants *and* we know the "start" pointer must be word-aligned.
+ * If MemSetTest succeeds, then it is okay to use MemSetLoop, otherwise use
+ * MemSetAligned.  Beware of multiple evaluations of the arguments when using
+ * this approach.
+ */
+#define MemSetTest(val, len) \
+	( ((len) & LONG_ALIGN_MASK) == 0 && \
+	(len) <= MEMSET_LOOP_LIMIT && \
+	MEMSET_LOOP_LIMIT != 0 && \
+	(val) == 0 )
+
+#define MemSetLoop(start, val, len) \
+	do \
+	{ \
+		long * _start = (long *) (start); \
+		long * _stop = (long *) ((char *) _start + (Size) (len)); \
+	\
+		while (_start < _stop) \
+			*_start++ = 0; \
+	} while (0)
+
+
+/* ----------------------------------------------------------------
+ *				Section 8:	random stuff
+ * ----------------------------------------------------------------
+ */
+
+/*
+ * Invert the sign of a qsort-style comparison result, ie, exchange negative
+ * and positive integer values, being careful not to get the wrong answer
+ * for INT_MIN.  The argument should be an integral variable.
+ */
+#define INVERT_COMPARE_RESULT(var) \
+	((var) = ((var) < 0) ? 1 : -(var))
+
+/*
+ * Use this, not "char buf[BLCKSZ]", to declare a field or local variable
+ * holding a page buffer, if that page might be accessed as a page and not
+ * just a string of bytes.  Otherwise the variable might be under-aligned,
+ * causing problems on alignment-picky hardware.  (In some places, we use
+ * this to declare buffers even though we only pass them to read() and
+ * write(), because copying to/from aligned buffers is usually faster than
+ * using unaligned buffers.)  We include both "double" and "int64" in the
+ * union to ensure that the compiler knows the value must be MAXALIGN'ed
+ * (cf. configure's computation of MAXIMUM_ALIGNOF).
+ */
+typedef union PGAlignedBlock
+{
+	char		data[BLCKSZ];
+	double		force_align_d;
+	int64		force_align_i64;
+} PGAlignedBlock;
+
+/* Same, but for an XLOG_BLCKSZ-sized buffer */
+typedef union PGAlignedXLogBlock
+{
+	char		data[XLOG_BLCKSZ];
+	double		force_align_d;
+	int64		force_align_i64;
+} PGAlignedXLogBlock;
+
+/* msb for char */
+#define HIGHBIT					(0x80)
+#define IS_HIGHBIT_SET(ch)		((unsigned char)(ch) & HIGHBIT)
+
+/*
+ * Support macros for escaping strings.  escape_backslash should be true
+ * if generating a non-standard-conforming string.  Prefixing a string
+ * with ESCAPE_STRING_SYNTAX guarantees it is non-standard-conforming.
+ * Beware of multiple evaluation of the "ch" argument!
+ */
+#define SQL_STR_DOUBLE(ch, escape_backslash)	\
+	((ch) == '\'' || ((ch) == '\\' && (escape_backslash)))
+
+#define ESCAPE_STRING_SYNTAX	'E'
+
+
+#define STATUS_OK				(0)
+#define STATUS_ERROR			(-1)
+#define STATUS_EOF				(-2)
+#define STATUS_FOUND			(1)
+#define STATUS_WAITING			(2)
+
+/*
+ * gettext support
+ */
+
+#ifndef ENABLE_NLS
+/* stuff we'd otherwise get from <libintl.h> */
+#define gettext(x) (x)
+#define dgettext(d,x) (x)
+#define ngettext(s,p,n) ((n) == 1 ? (s) : (p))
+#define dngettext(d,s,p,n) ((n) == 1 ? (s) : (p))
+#endif
+
+#define _(x) gettext(x)
+
+/*
+ *	Use this to mark string constants as needing translation at some later
+ *	time, rather than immediately.  This is useful for cases where you need
+ *	access to the original string and translated string, and for cases where
+ *	immediate translation is not possible, like when initializing global
+ *	variables.
+ *		http://www.gnu.org/software/autoconf/manual/gettext/Special-cases.html
+ */
+#define gettext_noop(x) (x)
+
+/*
+ * To better support parallel installations of major PostgreSQL
+ * versions as well as parallel installations of major library soname
+ * versions, we mangle the gettext domain name by appending those
+ * version numbers.  The coding rule ought to be that wherever the
+ * domain name is mentioned as a literal, it must be wrapped into
+ * PG_TEXTDOMAIN().  The macros below do not work on non-literals; but
+ * that is somewhat intentional because it avoids having to worry
+ * about multiple states of premangling and postmangling as the values
+ * are being passed around.
+ *
+ * Make sure this matches the installation rules in nls-global.mk.
+ */
+#ifdef SO_MAJOR_VERSION
+#define PG_TEXTDOMAIN(domain) (domain CppAsString2(SO_MAJOR_VERSION) "-" PG_MAJORVERSION)
+#else
+#define PG_TEXTDOMAIN(domain) (domain "-" PG_MAJORVERSION)
+#endif
+
+
+/* ----------------------------------------------------------------
+ *				Section 9: system-specific hacks
+ *
+ *		This should be limited to things that absolutely have to be
+ *		included in every source file.  The port-specific header file
+ *		is usually a better place for this sort of thing.
+ * ----------------------------------------------------------------
+ */
+
+/*
+ *	NOTE:  this is also used for opening text files.
+ *	WIN32 treats Control-Z as EOF in files opened in text mode.
+ *	Therefore, we open files in binary mode on Win32 so we can read
+ *	literal control-Z.  The other affect is that we see CRLF, but
+ *	that is OK because we can already handle those cleanly.
+ */
+#if defined(WIN32) || defined(__CYGWIN__)
+#define PG_BINARY	O_BINARY
+#define PG_BINARY_A "ab"
+#define PG_BINARY_R "rb"
+#define PG_BINARY_W "wb"
+#else
+#define PG_BINARY	0
+#define PG_BINARY_A "a"
+#define PG_BINARY_R "r"
+#define PG_BINARY_W "w"
+#endif
+
+/*
+ * Provide prototypes for routines not present in a particular machine's
+ * standard C library.
+ */
+
+#if !HAVE_DECL_SNPRINTF
+extern int	snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3, 4);
+#endif
+
+#if !HAVE_DECL_VSNPRINTF
+extern int	vsnprintf(char *str, size_t count, const char *fmt, va_list args);
+#endif
+
+#if defined(HAVE_FDATASYNC) && !HAVE_DECL_FDATASYNC
+extern int	fdatasync(int fildes);
+#endif
+
+#ifdef HAVE_LONG_LONG_INT
+/* Older platforms may provide strto[u]ll functionality under other names */
+#if !defined(HAVE_STRTOLL) && defined(HAVE___STRTOLL)
+#define strtoll __strtoll
+#define HAVE_STRTOLL 1
+#endif
+
+#if !defined(HAVE_STRTOLL) && defined(HAVE_STRTOQ)
+#define strtoll strtoq
+#define HAVE_STRTOLL 1
+#endif
+
+#if !defined(HAVE_STRTOULL) && defined(HAVE___STRTOULL)
+#define strtoull __strtoull
+#define HAVE_STRTOULL 1
+#endif
+
+#if !defined(HAVE_STRTOULL) && defined(HAVE_STRTOUQ)
+#define strtoull strtouq
+#define HAVE_STRTOULL 1
+#endif
+
+#if defined(HAVE_STRTOLL) && !HAVE_DECL_STRTOLL
+extern long long strtoll(const char *str, char **endptr, int base);
+#endif
+
+#if defined(HAVE_STRTOULL) && !HAVE_DECL_STRTOULL
+extern unsigned long long strtoull(const char *str, char **endptr, int base);
+#endif
+#endif							/* HAVE_LONG_LONG_INT */
+
+#if !defined(HAVE_MEMMOVE) && !defined(memmove)
+#define memmove(d, s, c)		bcopy(s, d, c)
+#endif
+
+/* no special DLL markers on most ports */
+#ifndef PGDLLIMPORT
+#define PGDLLIMPORT
+#endif
+#ifndef PGDLLEXPORT
+#define PGDLLEXPORT
+#endif
+
+/*
+ * The following is used as the arg list for signal handlers.  Any ports
+ * that take something other than an int argument should override this in
+ * their pg_config_os.h file.  Note that variable names are required
+ * because it is used in both the prototypes as well as the definitions.
+ * Note also the long name.  We expect that this won't collide with
+ * other names causing compiler warnings.
+ */
+
+#ifndef SIGNAL_ARGS
+#define SIGNAL_ARGS  int postgres_signal_arg
+#endif
+
+/*
+ * When there is no sigsetjmp, its functionality is provided by plain
+ * setjmp. Incidentally, nothing provides setjmp's functionality in
+ * that case.  We now support the case only on Windows.
+ */
+#ifdef WIN32
+#define sigjmp_buf jmp_buf
+#define sigsetjmp(x,y) setjmp(x)
+#define siglongjmp longjmp
+#endif
+
+/* EXEC_BACKEND defines */
+#ifdef EXEC_BACKEND
+#define NON_EXEC_STATIC
+#else
+#define NON_EXEC_STATIC static
+#endif
+
+/* /port compatibility functions */
+#include "port.h"
+
+#endif							/* C_H */

+/*-------------------------------------------------------------------------
+ *
+ * libpq-int.h
+ *	  This file contains internal definitions meant to be used only by
+ *	  the frontend libpq library, not by applications that call it.
+ *
+ *	  An application can include this file if it wants to bypass the
+ *	  official API defined by libpq-fe.h, but code that does so is much
+ *	  more likely to break across PostgreSQL releases than code that uses
+ *	  only the official API.
+ *
+ * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/interfaces/libpq/libpq-int.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef LIBPQ_INT_H
+#define LIBPQ_INT_H
+
+/* We assume libpq-fe.h has already been included. */
+#include "libpq-events.h"
+
+#include <time.h>
+#ifndef WIN32
+#include <sys/time.h>
+#endif
+
+#ifdef ENABLE_THREAD_SAFETY
+#ifdef WIN32
+#include "pthread-win32.h"
+#else
+#include <pthread.h>
+#endif
+#include <signal.h>
+#endif
+
+/* include stuff common to fe and be */
+#include "getaddrinfo.h"
+#include "libpq/pqcomm.h"
+/* include stuff found in fe only */
+#include "pqexpbuffer.h"
+
+#ifdef ENABLE_GSS
+#if defined(HAVE_GSSAPI_H)
+#include <gssapi.h>
+#else
+#include <gssapi/gssapi.h>
+#endif
+#endif
+
+#ifdef ENABLE_SSPI
+#define SECURITY_WIN32
+#if defined(WIN32) && !defined(_MSC_VER)
+#include <ntsecapi.h>
+#endif
+#include <security.h>
+#undef SECURITY_WIN32
+
+#ifndef ENABLE_GSS
+/*
+ * Define a fake structure compatible with GSSAPI on Unix.
+ */
+typedef struct
+{
+	void	   *value;
+	int			length;
+} gss_buffer_desc;
+#endif
+#endif							/* ENABLE_SSPI */
+
+#ifdef USE_OPENSSL
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+
+#ifndef OPENSSL_NO_ENGINE
+#define USE_SSL_ENGINE
+#endif
+#endif							/* USE_OPENSSL */
+
+/*
+ * POSTGRES backend dependent Constants.
+ */
+#define CMDSTATUS_LEN 64		/* should match COMPLETION_TAG_BUFSIZE */
+
+/*
+ * PGresult and the subsidiary types PGresAttDesc, PGresAttValue
+ * represent the result of a query (or more precisely, of a single SQL
+ * command --- a query string given to PQexec can contain multiple commands).
+ * Note we assume that a single command can return at most one tuple group,
+ * hence there is no need for multiple descriptor sets.
+ */
+
+/* Subsidiary-storage management structure for PGresult.
+ * See space management routines in fe-exec.c for details.
+ * Note that space[k] refers to the k'th byte starting from the physical
+ * head of the block --- it's a union, not a struct!
+ */
+typedef union pgresult_data PGresult_data;
+
+union pgresult_data
+{
+	PGresult_data *next;		/* link to next block, or NULL */
+	char		space[1];		/* dummy for accessing block as bytes */
+};
+
+/* Data about a single parameter of a prepared statement */
+typedef struct pgresParamDesc
+{
+	Oid			typid;			/* type id */
+} PGresParamDesc;
+
+/*
+ * Data for a single attribute of a single tuple
+ *
+ * We use char* for Attribute values.
+ *
+ * The value pointer always points to a null-terminated area; we add a
+ * null (zero) byte after whatever the backend sends us.  This is only
+ * particularly useful for text values ... with a binary value, the
+ * value might have embedded nulls, so the application can't use C string
+ * operators on it.  But we add a null anyway for consistency.
+ * Note that the value itself does not contain a length word.
+ *
+ * A NULL attribute is a special case in two ways: its len field is NULL_LEN
+ * and its value field points to null_field in the owning PGresult.  All the
+ * NULL attributes in a query result point to the same place (there's no need
+ * to store a null string separately for each one).
+ */
+
+#define NULL_LEN		(-1)	/* pg_result len for NULL value */
+
+typedef struct pgresAttValue
+{
+	int			len;			/* length in bytes of the value */
+	char	   *value;			/* actual value, plus terminating zero byte */
+} PGresAttValue;
+
+/* Typedef for message-field list entries */
+typedef struct pgMessageField
+{
+	struct pgMessageField *next;	/* list link */
+	char		code;			/* field code */
+	char		contents[FLEXIBLE_ARRAY_MEMBER];	/* value, nul-terminated */
+} PGMessageField;
+
+/* Fields needed for notice handling */
+typedef struct
+{
+	PQnoticeReceiver noticeRec; /* notice message receiver */
+	void	   *noticeRecArg;
+	PQnoticeProcessor noticeProc;	/* notice message processor */
+	void	   *noticeProcArg;
+} PGNoticeHooks;
+
+typedef struct PGEvent
+{
+	PGEventProc proc;			/* the function to call on events */
+	char	   *name;			/* used only for error messages */
+	void	   *passThrough;	/* pointer supplied at registration time */
+	void	   *data;			/* optional state (instance) data */
+	bool		resultInitialized;	/* T if RESULTCREATE/COPY succeeded */
+} PGEvent;
+
+struct pg_result
+{
+	int			ntups;
+	int			numAttributes;
+	PGresAttDesc *attDescs;
+	PGresAttValue **tuples;		/* each PGresTuple is an array of
+								 * PGresAttValue's */
+	int			tupArrSize;		/* allocated size of tuples array */
+	int			numParameters;
+	PGresParamDesc *paramDescs;
+	ExecStatusType resultStatus;
+	char		cmdStatus[CMDSTATUS_LEN];	/* cmd status from the query */
+	int			binary;			/* binary tuple values if binary == 1,
+								 * otherwise text */
+
+	/*
+	 * These fields are copied from the originating PGconn, so that operations
+	 * on the PGresult don't have to reference the PGconn.
+	 */
+	PGNoticeHooks noticeHooks;
+	PGEvent    *events;
+	int			nEvents;
+	int			client_encoding;	/* encoding id */
+
+	/*
+	 * Error information (all NULL if not an error result).  errMsg is the
+	 * "overall" error message returned by PQresultErrorMessage.  If we have
+	 * per-field info then it is stored in a linked list.
+	 */
+	char	   *errMsg;			/* error message, or NULL if no error */
+	PGMessageField *errFields;	/* message broken into fields */
+	char	   *errQuery;		/* text of triggering query, if available */
+
+	/* All NULL attributes in the query result point to this null string */
+	char		null_field[1];
+
+	/*
+	 * Space management information.  Note that attDescs and error stuff, if
+	 * not null, point into allocated blocks.  But tuples points to a
+	 * separately malloc'd block, so that we can realloc it.
+	 */
+	PGresult_data *curBlock;	/* most recently allocated block */
+	int			curOffset;		/* start offset of free space in block */
+	int			spaceLeft;		/* number of free bytes remaining in block */
+};
+
+/* PGAsyncStatusType defines the state of the query-execution state machine */
+typedef enum
+{
+	PGASYNC_IDLE,				/* nothing's happening, dude */
+	PGASYNC_BUSY,				/* query in progress */
+	PGASYNC_READY,				/* result ready for PQgetResult */
+	PGASYNC_COPY_IN,			/* Copy In data transfer in progress */
+	PGASYNC_COPY_OUT,			/* Copy Out data transfer in progress */
+	PGASYNC_COPY_BOTH			/* Copy In/Out data transfer in progress */
+} PGAsyncStatusType;
+
+/* PGQueryClass tracks which query protocol we are now executing */
+typedef enum
+{
+	PGQUERY_SIMPLE,				/* simple Query protocol (PQexec) */
+	PGQUERY_EXTENDED,			/* full Extended protocol (PQexecParams) */
+	PGQUERY_PREPARE,			/* Parse only (PQprepare) */
+	PGQUERY_DESCRIBE			/* Describe Statement or Portal */
+} PGQueryClass;
+
+/* PGSetenvStatusType defines the state of the PQSetenv state machine */
+/* (this is used only for 2.0-protocol connections) */
+typedef enum
+{
+	SETENV_STATE_CLIENT_ENCODING_SEND,	/* About to send an Environment Option */
+	SETENV_STATE_CLIENT_ENCODING_WAIT,	/* Waiting for above send to complete */
+	SETENV_STATE_OPTION_SEND,	/* About to send an Environment Option */
+	SETENV_STATE_OPTION_WAIT,	/* Waiting for above send to complete */
+	SETENV_STATE_QUERY1_SEND,	/* About to send a status query */
+	SETENV_STATE_QUERY1_WAIT,	/* Waiting for query to complete */
+	SETENV_STATE_QUERY2_SEND,	/* About to send a status query */
+	SETENV_STATE_QUERY2_WAIT,	/* Waiting for query to complete */
+	SETENV_STATE_IDLE
+} PGSetenvStatusType;
+
+/* Typedef for the EnvironmentOptions[] array */
+typedef struct PQEnvironmentOption
+{
+	const char *envName,		/* name of an environment variable */
+			   *pgName;			/* name of corresponding SET variable */
+} PQEnvironmentOption;
+
+/* Typedef for parameter-status list entries */
+typedef struct pgParameterStatus
+{
+	struct pgParameterStatus *next; /* list link */
+	char	   *name;			/* parameter name */
+	char	   *value;			/* parameter value */
+	/* Note: name and value are stored in same malloc block as struct is */
+} pgParameterStatus;
+
+/* large-object-access data ... allocated only if large-object code is used. */
+typedef struct pgLobjfuncs
+{
+	Oid			fn_lo_open;		/* OID of backend function lo_open		*/
+	Oid			fn_lo_close;	/* OID of backend function lo_close		*/
+	Oid			fn_lo_creat;	/* OID of backend function lo_creat		*/
+	Oid			fn_lo_create;	/* OID of backend function lo_create	*/
+	Oid			fn_lo_unlink;	/* OID of backend function lo_unlink	*/
+	Oid			fn_lo_lseek;	/* OID of backend function lo_lseek		*/
+	Oid			fn_lo_lseek64;	/* OID of backend function lo_lseek64	*/
+	Oid			fn_lo_tell;		/* OID of backend function lo_tell		*/
+	Oid			fn_lo_tell64;	/* OID of backend function lo_tell64	*/
+	Oid			fn_lo_truncate; /* OID of backend function lo_truncate	*/
+	Oid			fn_lo_truncate64;	/* OID of function lo_truncate64 */
+	Oid			fn_lo_read;		/* OID of backend function LOread		*/
+	Oid			fn_lo_write;	/* OID of backend function LOwrite		*/
+} PGlobjfuncs;
+
+/* PGdataValue represents a data field value being passed to a row processor.
+ * It could be either text or binary data; text data is not zero-terminated.
+ * A SQL NULL is represented by len < 0; then value is still valid but there
+ * are no data bytes there.
+ */
+typedef struct pgDataValue
+{
+	int			len;			/* data length in bytes, or <0 if NULL */
+	const char *value;			/* data value, without zero-termination */
+} PGdataValue;
+
+/* Host address type enum for struct pg_conn_host */
+typedef enum pg_conn_host_type
+{
+	CHT_HOST_NAME,
+	CHT_HOST_ADDRESS,
+	CHT_UNIX_SOCKET
+} pg_conn_host_type;
+
+/*
+ * pg_conn_host stores all information about each of possibly several hosts
+ * mentioned in the connection string.  Most fields are derived by splitting
+ * the relevant connection parameter (e.g., pghost) at commas.
+ */
+typedef struct pg_conn_host
+{
+	pg_conn_host_type type;		/* type of host address */
+	char	   *host;			/* host name or socket path */
+	char	   *hostaddr;		/* host numeric IP address */
+	char	   *port;			/* port number (always provided) */
+	char	   *password;		/* password for this host, read from the
+								 * password file; NULL if not sought or not
+								 * found in password file. */
+	struct addrinfo *was_addrlist;	/* dummy for ABI compatibility */
+} pg_conn_host;
+
+/*
+ * PGconn stores all the state data associated with a single connection
+ * to a backend.
+ */
+struct pg_conn
+{
+	/* Saved values of connection options */
+	char	   *pghost;			/* the machine on which the server is running,
+								 * or a path to a UNIX-domain socket, or a
+								 * comma-separated list of machines and/or
+								 * paths; if NULL, use DEFAULT_PGSOCKET_DIR */
+	char	   *pghostaddr;		/* the numeric IP address of the machine on
+								 * which the server is running, or a
+								 * comma-separated list of same.  Takes
+								 * precedence over pghost. */
+	char	   *pgport;			/* the server's communication port number, or
+								 * a comma-separated list of ports */
+	char	   *pgtty;			/* tty on which the backend messages is
+								 * displayed (OBSOLETE, NOT USED) */
+	char	   *connect_timeout;	/* connection timeout (numeric string) */
+	char	   *client_encoding_initial;	/* encoding to use */
+	char	   *pgoptions;		/* options to start the backend with */
+	char	   *appname;		/* application name */
+	char	   *fbappname;		/* fallback application name */
+	char	   *dbName;			/* database name */
+	char	   *replication;	/* connect as the replication standby? */
+	char	   *pguser;			/* Postgres username and password, if any */
+	char	   *pgpass;
+	char	   *pgpassfile;		/* path to a file containing password(s) */
+	char	   *keepalives;		/* use TCP keepalives? */
+	char	   *keepalives_idle;	/* time between TCP keepalives */
+	char	   *keepalives_interval;	/* time between TCP keepalive
+										 * retransmits */
+	char	   *keepalives_count;	/* maximum number of TCP keepalive
+									 * retransmits */
+	char	   *sslmode;		/* SSL mode (require,prefer,allow,disable) */
+	char	   *sslcompression; /* SSL compression (0 or 1) */
+	char	   *sslkey;			/* client key filename */
+	char	   *sslcert;		/* client certificate filename */
+	char	   *sslrootcert;	/* root certificate filename */
+	char	   *sslcrl;			/* certificate revocation list filename */
+	char	   *requirepeer;	/* required peer credentials for local sockets */
+
+#if defined(ENABLE_GSS) || defined(ENABLE_SSPI)
+	char	   *krbsrvname;		/* Kerberos service name */
+#endif
+
+	/* Type of connection to make.  Possible values: any, read-write. */
+	char	   *target_session_attrs;
+
+	/* Optional file to write trace info to */
+	FILE	   *Pfdebug;
+
+	/* Callback procedures for notice message processing */
+	PGNoticeHooks noticeHooks;
+
+	/* Event procs registered via PQregisterEventProc */
+	PGEvent    *events;			/* expandable array of event data */
+	int			nEvents;		/* number of active events */
+	int			eventArraySize; /* allocated array size */
+
+	/* Status indicators */
+	ConnStatusType status;
+	PGAsyncStatusType asyncStatus;
+	PGTransactionStatusType xactStatus; /* never changes to ACTIVE */
+	PGQueryClass queryclass;
+	char	   *last_query;		/* last SQL command, or NULL if unknown */
+	char		last_sqlstate[6];	/* last reported SQLSTATE */
+	bool		options_valid;	/* true if OK to attempt connection */
+	bool		nonblocking;	/* whether this connection is using nonblock
+								 * sending semantics */
+	bool		singleRowMode;	/* return current query result row-by-row? */
+	char		copy_is_binary; /* 1 = copy binary, 0 = copy text */
+	int			copy_already_done;	/* # bytes already returned in COPY OUT */
+	PGnotify   *notifyHead;		/* oldest unreported Notify msg */
+	PGnotify   *notifyTail;		/* newest unreported Notify msg */
+
+	/* Support for multiple hosts in connection string */
+	int			nconnhost;		/* # of hosts named in conn string */
+	int			whichhost;		/* host we're currently trying/connected to */
+	pg_conn_host *connhost;		/* details about each named host */
+
+	/* Connection data */
+	pgsocket	sock;			/* FD for socket, PGINVALID_SOCKET if
+								 * unconnected */
+	SockAddr	laddr;			/* Local address */
+	SockAddr	raddr;			/* Remote address */
+	ProtocolVersion pversion;	/* FE/BE protocol version in use */
+	int			sversion;		/* server version, e.g. 70401 for 7.4.1 */
+	bool		auth_req_received;	/* true if any type of auth req received */
+	bool		password_needed;	/* true if server demanded a password */
+	bool		sigpipe_so;		/* have we masked SIGPIPE via SO_NOSIGPIPE? */
+	bool		sigpipe_flag;	/* can we mask SIGPIPE via MSG_NOSIGNAL? */
+
+	/* Transient state needed while establishing connection */
+	bool		try_next_addr;	/* time to advance to next address/host? */
+	bool		try_next_host;	/* time to advance to next connhost[]? */
+	struct addrinfo *addr_cur;	/* backend address currently being tried */
+	PGSetenvStatusType setenv_state;	/* for 2.0 protocol only */
+	const PQEnvironmentOption *next_eo;
+	bool		send_appname;	/* okay to send application_name? */
+
+	/* Miscellaneous stuff */
+	int			be_pid;			/* PID of backend --- needed for cancels */
+	int			be_key;			/* key of backend --- needed for cancels */
+	pgParameterStatus *pstatus; /* ParameterStatus data */
+	int			client_encoding;	/* encoding id */
+	bool		std_strings;	/* standard_conforming_strings */
+	PGVerbosity verbosity;		/* error/notice message verbosity */
+	PGContextVisibility show_context;	/* whether to show CONTEXT field */
+	PGlobjfuncs *lobjfuncs;		/* private state for large-object access fns */
+
+	/* Buffer for data received from backend and not yet processed */
+	char	   *inBuffer;		/* currently allocated buffer */
+	int			inBufSize;		/* allocated size of buffer */
+	int			inStart;		/* offset to first unconsumed data in buffer */
+	int			inCursor;		/* next byte to tentatively consume */
+	int			inEnd;			/* offset to first position after avail data */
+
+	/* Buffer for data not yet sent to backend */
+	char	   *outBuffer;		/* currently allocated buffer */
+	int			outBufSize;		/* allocated size of buffer */
+	int			outCount;		/* number of chars waiting in buffer */
+
+	/* State for constructing messages in outBuffer */
+	int			outMsgStart;	/* offset to msg start (length word); if -1,
+								 * msg has no length word */
+	int			outMsgEnd;		/* offset to msg end (so far) */
+
+	/* Row processor interface workspace */
+	PGdataValue *rowBuf;		/* array for passing values to rowProcessor */
+	int			rowBufLen;		/* number of entries allocated in rowBuf */
+
+	/* Status for asynchronous result construction */
+	PGresult   *result;			/* result being constructed */
+	PGresult   *next_result;	/* next result (used in single-row mode) */
+
+	/* Assorted state for SASL, SSL, GSS, etc */
+	void	   *sasl_state;
+
+	/* SSL structures */
+	bool		ssl_in_use;
+
+#ifdef USE_SSL
+	bool		allow_ssl_try;	/* Allowed to try SSL negotiation */
+	bool		wait_ssl_try;	/* Delay SSL negotiation until after
+								 * attempting normal connection */
+#ifdef USE_OPENSSL
+	SSL		   *ssl;			/* SSL status, if have SSL connection */
+	X509	   *peer;			/* X509 cert of server */
+#ifdef USE_SSL_ENGINE
+	ENGINE	   *engine;			/* SSL engine, if any */
+#else
+	void	   *engine;			/* dummy field to keep struct the same if
+								 * OpenSSL version changes */
+#endif
+#endif							/* USE_OPENSSL */
+#endif							/* USE_SSL */
+
+#ifdef ENABLE_GSS
+	gss_ctx_id_t gctx;			/* GSS context */
+	gss_name_t	gtarg_nam;		/* GSS target name */
+#endif
+
+#ifdef ENABLE_SSPI
+#ifdef ENABLE_GSS
+	char	   *gsslib;			/* What GSS library to use ("gssapi" or
+								 * "sspi") */
+#endif
+	CredHandle *sspicred;		/* SSPI credentials handle */
+	CtxtHandle *sspictx;		/* SSPI context */
+	char	   *sspitarget;		/* SSPI target name */
+	int			usesspi;		/* Indicate if SSPI is in use on the
+								 * connection */
+#endif
+
+	/* Buffer for current error message */
+	PQExpBufferData errorMessage;	/* expansible string */
+
+	/* Buffer for receiving various parts of messages */
+	PQExpBufferData workBuffer; /* expansible string */
+
+	/* Placed at the end, in this branch, to minimize ABI breakage */
+	struct addrinfo *addrlist;	/* list of addresses for current connhost */
+	int			addrlist_family;	/* needed to know how to free addrlist */
+};
+
+/* PGcancel stores all data necessary to cancel a connection. A copy of this
+ * data is required to safely cancel a connection running on a different
+ * thread.
+ */
+struct pg_cancel
+{
+	SockAddr	raddr;			/* Remote address */
+	int			be_pid;			/* PID of backend --- needed for cancels */
+	int			be_key;			/* key of backend --- needed for cancels */
+};
+
+
+/* String descriptions of the ExecStatusTypes.
+ * direct use of this array is deprecated; call PQresStatus() instead.
+ */
+extern char *const pgresStatus[];
+
+
+#ifdef USE_SSL
+
+#ifndef WIN32
+#define USER_CERT_FILE		".postgresql/postgresql.crt"
+#define USER_KEY_FILE		".postgresql/postgresql.key"
+#define ROOT_CERT_FILE		".postgresql/root.crt"
+#define ROOT_CRL_FILE		".postgresql/root.crl"
+#else
+/* On Windows, the "home" directory is already PostgreSQL-specific */
+#define USER_CERT_FILE		"postgresql.crt"
+#define USER_KEY_FILE		"postgresql.key"
+#define ROOT_CERT_FILE		"root.crt"
+#define ROOT_CRL_FILE		"root.crl"
+#endif
+
+#endif							/* USE_SSL */
+
+/* ----------------
+ * Internal functions of libpq
+ * Functions declared here need to be visible across files of libpq,
+ * but are not intended to be called by applications.  We use the
+ * convention "pqXXX" for internal functions, vs. the "PQxxx" names
+ * used for application-visible routines.
+ * ----------------
+ */
+
+/* === in fe-connect.c === */
+
+extern void pqDropConnection(PGconn *conn, bool flushInput);
+extern int pqPacketSend(PGconn *conn, char pack_type,
+			 const void *buf, size_t buf_len);
+extern bool pqGetHomeDirectory(char *buf, int bufsize);
+
+#ifdef ENABLE_THREAD_SAFETY
+extern pgthreadlock_t pg_g_threadlock;
+
+#define PGTHREAD_ERROR(msg) \
+	do { \
+		fprintf(stderr, "%s\n", msg); \
+		abort(); \
+	} while (0)
+
+
+#define pglock_thread()		pg_g_threadlock(true)
+#define pgunlock_thread()	pg_g_threadlock(false)
+#else
+#define pglock_thread()		((void) 0)
+#define pgunlock_thread()	((void) 0)
+#endif
+
+/* === in fe-exec.c === */
+
+extern void pqSetResultError(PGresult *res, const char *msg);
+extern void pqCatenateResultError(PGresult *res, const char *msg);
+extern void *pqResultAlloc(PGresult *res, size_t nBytes, bool isBinary);
+extern char *pqResultStrdup(PGresult *res, const char *str);
+extern void pqClearAsyncResult(PGconn *conn);
+extern void pqSaveErrorResult(PGconn *conn);
+extern PGresult *pqPrepareAsyncResult(PGconn *conn);
+extern void pqInternalNotice(const PGNoticeHooks *hooks, const char *fmt,...) pg_attribute_printf(2, 3);
+extern void pqSaveMessageField(PGresult *res, char code,
+				   const char *value);
+extern void pqSaveParameterStatus(PGconn *conn, const char *name,
+					  const char *value);
+extern int	pqRowProcessor(PGconn *conn, const char **errmsgp);
+extern void pqHandleSendFailure(PGconn *conn);
+
+/* === in fe-protocol2.c === */
+
+extern PostgresPollingStatusType pqSetenvPoll(PGconn *conn);
+
+extern char *pqBuildStartupPacket2(PGconn *conn, int *packetlen,
+					  const PQEnvironmentOption *options);
+extern void pqParseInput2(PGconn *conn);
+extern int	pqGetCopyData2(PGconn *conn, char **buffer, int async);
+extern int	pqGetline2(PGconn *conn, char *s, int maxlen);
+extern int	pqGetlineAsync2(PGconn *conn, char *buffer, int bufsize);
+extern int	pqEndcopy2(PGconn *conn);
+extern PGresult *pqFunctionCall2(PGconn *conn, Oid fnid,
+				int *result_buf, int *actual_result_len,
+				int result_is_int,
+				const PQArgBlock *args, int nargs);
+
+/* === in fe-protocol3.c === */
+
+extern char *pqBuildStartupPacket3(PGconn *conn, int *packetlen,
+					  const PQEnvironmentOption *options);
+extern void pqParseInput3(PGconn *conn);
+extern int	pqGetErrorNotice3(PGconn *conn, bool isError);
+extern void pqBuildErrorMessage3(PQExpBuffer msg, const PGresult *res,
+					 PGVerbosity verbosity, PGContextVisibility show_context);
+extern int	pqGetCopyData3(PGconn *conn, char **buffer, int async);
+extern int	pqGetline3(PGconn *conn, char *s, int maxlen);
+extern int	pqGetlineAsync3(PGconn *conn, char *buffer, int bufsize);
+extern int	pqEndcopy3(PGconn *conn);
+extern PGresult *pqFunctionCall3(PGconn *conn, Oid fnid,
+				int *result_buf, int *actual_result_len,
+				int result_is_int,
+				const PQArgBlock *args, int nargs);
+
+/* === in fe-misc.c === */
+
+ /*
+  * "Get" and "Put" routines return 0 if successful, EOF if not. Note that for
+  * Get, EOF merely means the buffer is exhausted, not that there is
+  * necessarily any error.
+  */
+extern int	pqCheckOutBufferSpace(size_t bytes_needed, PGconn *conn);
+extern int	pqCheckInBufferSpace(size_t bytes_needed, PGconn *conn);
+extern int	pqGetc(char *result, PGconn *conn);
+extern int	pqPutc(char c, PGconn *conn);
+extern int	pqGets(PQExpBuffer buf, PGconn *conn);
+extern int	pqGets_append(PQExpBuffer buf, PGconn *conn);
+extern int	pqPuts(const char *s, PGconn *conn);
+extern int	pqGetnchar(char *s, size_t len, PGconn *conn);
+extern int	pqSkipnchar(size_t len, PGconn *conn);
+extern int	pqPutnchar(const char *s, size_t len, PGconn *conn);
+extern int	pqGetInt(int *result, size_t bytes, PGconn *conn);
+extern int	pqPutInt(int value, size_t bytes, PGconn *conn);
+extern int	pqPutMsgStart(char msg_type, bool force_len, PGconn *conn);
+extern int	pqPutMsgEnd(PGconn *conn);
+extern int	pqReadData(PGconn *conn);
+extern int	pqFlush(PGconn *conn);
+extern int	pqWait(int forRead, int forWrite, PGconn *conn);
+extern int pqWaitTimed(int forRead, int forWrite, PGconn *conn,
+			time_t finish_time);
+extern int	pqReadReady(PGconn *conn);
+extern int	pqWriteReady(PGconn *conn);
+
+/* === in fe-secure.c === */
+
+extern int	pqsecure_initialize(PGconn *);
+extern void pqsecure_destroy(void);
+extern PostgresPollingStatusType pqsecure_open_client(PGconn *);
+extern void pqsecure_close(PGconn *);
+extern ssize_t pqsecure_read(PGconn *, void *ptr, size_t len);
+extern ssize_t pqsecure_write(PGconn *, const void *ptr, size_t len);
+extern ssize_t pqsecure_raw_read(PGconn *, void *ptr, size_t len);
+extern ssize_t pqsecure_raw_write(PGconn *, const void *ptr, size_t len);
+
+#if defined(ENABLE_THREAD_SAFETY) && !defined(WIN32)
+extern int	pq_block_sigpipe(sigset_t *osigset, bool *sigpipe_pending);
+extern void pq_reset_sigpipe(sigset_t *osigset, bool sigpipe_pending,
+				 bool got_epipe);
+#endif
+
+/* === SSL === */
+
+/*
+ * The SSL implementation provides these functions.
+ */
+
+/*
+ *	Implementation of PQinitSSL().
+ */
+extern void pgtls_init_library(bool do_ssl, int do_crypto);
+
+/*
+ * Initialize SSL library.
+ *
+ * The conn parameter is only used to be able to pass back an error
+ * message - no connection-local setup is made here.
+ *
+ * Returns 0 if OK, -1 on failure (with a message in conn->errorMessage).
+ */
+extern int	pgtls_init(PGconn *conn);
+
+/*
+ *	Begin or continue negotiating a secure session.
+ */
+extern PostgresPollingStatusType pgtls_open_client(PGconn *conn);
+
+/*
+ *	Close SSL connection.
+ */
+extern void pgtls_close(PGconn *conn);
+
+/*
+ *	Read data from a secure connection.
+ *
+ * On failure, this function is responsible for putting a suitable message
+ * into conn->errorMessage.  The caller must still inspect errno, but only
+ * to determine whether to continue/retry after error.
+ */
+extern ssize_t pgtls_read(PGconn *conn, void *ptr, size_t len);
+
+/*
+ *	Is there unread data waiting in the SSL read buffer?
+ */
+extern bool pgtls_read_pending(PGconn *conn);
+
+/*
+ *	Write data to a secure connection.
+ *
+ * On failure, this function is responsible for putting a suitable message
+ * into conn->errorMessage.  The caller must still inspect errno, but only
+ * to determine whether to continue/retry after error.
+ */
+extern ssize_t pgtls_write(PGconn *conn, const void *ptr, size_t len);
+
+/*
+ * Get the hash of the server certificate, for SCRAM channel binding type
+ * tls-server-end-point.
+ *
+ * NULL is sent back to the caller in the event of an error, with an
+ * error message for the caller to consume.
+ *
+ * This is not supported with old versions of OpenSSL that don't have
+ * the X509_get_signature_nid() function.
+ */
+#if defined(USE_OPENSSL) && defined(HAVE_X509_GET_SIGNATURE_NID)
+#define HAVE_PGTLS_GET_PEER_CERTIFICATE_HASH
+extern char *pgtls_get_peer_certificate_hash(PGconn *conn, size_t *len);
+#endif
+
+/*
+ * Verify that the server certificate matches the host name we connected to.
+ *
+ * The certificate's Common Name and Subject Alternative Names are considered.
+ *
+ * Returns 1 if the name matches, and 0 if it does not. On error, returns
+ * -1, and sets the libpq error message.
+ *
+ */
+extern int pgtls_verify_peer_name_matches_certificate_guts(PGconn *conn,
+												int *names_examined,
+												char **first_name);
+
+/* === miscellaneous macros === */
+
+/*
+ * this is so that we can check if a connection is non-blocking internally
+ * without the overhead of a function call
+ */
+#define pqIsnonblocking(conn)	((conn)->nonblocking)
+
+#ifdef ENABLE_NLS
+extern char *libpq_gettext(const char *msgid) pg_attribute_format_arg(1);
+extern char *libpq_ngettext(const char *msgid, const char *msgid_plural, unsigned long n) pg_attribute_format_arg(1) pg_attribute_format_arg(2);
+#else
+#define libpq_gettext(x) (x)
+#define libpq_ngettext(s, p, n) ((n) == 1 ? (s) : (p))
+#endif
+
+/*
+ * These macros are needed to let error-handling code be portable between
+ * Unix and Windows.  (ugh)
+ */
+#ifdef WIN32
+#define SOCK_ERRNO (WSAGetLastError())
+#define SOCK_STRERROR winsock_strerror
+#define SOCK_ERRNO_SET(e) WSASetLastError(e)
+#else
+#define SOCK_ERRNO errno
+#define SOCK_STRERROR pqStrerror
+#define SOCK_ERRNO_SET(e) (errno = (e))
+#endif
+
+#endif							/* LIBPQ_INT_H */

+/*-------------------------------------------------------------------------
+ *
+ * pqcomm.h
+ *		Definitions common to frontends and backends.
+ *
+ * NOTE: for historical reasons, this does not correspond to pqcomm.c.
+ * pqcomm.c's routines are declared in libpq.h.
+ *
+ * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/pqcomm.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PQCOMM_H
+#define PQCOMM_H
+
+#include <sys/socket.h>
+#include <netdb.h>
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#include <netinet/in.h>
+
+#ifdef HAVE_STRUCT_SOCKADDR_STORAGE
+
+#ifndef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
+#ifdef HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY
+#define ss_family __ss_family
+#else
+#error struct sockaddr_storage does not provide an ss_family member
+#endif
+#endif
+
+#ifdef HAVE_STRUCT_SOCKADDR_STORAGE___SS_LEN
+#define ss_len __ss_len
+#define HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN 1
+#endif
+#else							/* !HAVE_STRUCT_SOCKADDR_STORAGE */
+
+/* Define a struct sockaddr_storage if we don't have one. */
+
+struct sockaddr_storage
+{
+	union
+	{
+		struct sockaddr sa;		/* get the system-dependent fields */
+		int64		ss_align;	/* ensures struct is properly aligned */
+		char		ss_pad[128];	/* ensures struct has desired size */
+	}			ss_stuff;
+};
+
+#define ss_family	ss_stuff.sa.sa_family
+/* It should have an ss_len field if sockaddr has sa_len. */
+#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
+#define ss_len		ss_stuff.sa.sa_len
+#define HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN 1
+#endif
+#endif							/* HAVE_STRUCT_SOCKADDR_STORAGE */
+
+typedef struct
+{
+	struct sockaddr_storage addr;
+	ACCEPT_TYPE_ARG3 salen;
+} SockAddr;
+
+/* Configure the UNIX socket location for the well known port. */
+
+#define UNIXSOCK_PATH(path, port, sockdir) \
+		snprintf(path, sizeof(path), "%s/.s.PGSQL.%d", \
+				((sockdir) && *(sockdir) != '\0') ? (sockdir) : \
+				DEFAULT_PGSOCKET_DIR, \
+				(port))
+
+/*
+ * The maximum workable length of a socket path is what will fit into
+ * struct sockaddr_un.  This is usually only 100 or so bytes :-(.
+ *
+ * For consistency, always pass a MAXPGPATH-sized buffer to UNIXSOCK_PATH(),
+ * then complain if the resulting string is >= UNIXSOCK_PATH_BUFLEN bytes.
+ * (Because the standard API for getaddrinfo doesn't allow it to complain in
+ * a useful way when the socket pathname is too long, we have to test for
+ * this explicitly, instead of just letting the subroutine return an error.)
+ */
+#define UNIXSOCK_PATH_BUFLEN sizeof(((struct sockaddr_un *) NULL)->sun_path)
+
+
+/*
+ * These manipulate the frontend/backend protocol version number.
+ *
+ * The major number should be incremented for incompatible changes.  The minor
+ * number should be incremented for compatible changes (eg. additional
+ * functionality).
+ *
+ * If a backend supports version m.n of the protocol it must actually support
+ * versions m.[0..n].  Backend support for version m-1 can be dropped after a
+ * `reasonable' length of time.
+ *
+ * A frontend isn't required to support anything other than the current
+ * version.
+ */
+
+#define PG_PROTOCOL_MAJOR(v)	((v) >> 16)
+#define PG_PROTOCOL_MINOR(v)	((v) & 0x0000ffff)
+#define PG_PROTOCOL(m,n)	(((m) << 16) | (n))
+
+/* The earliest and latest frontend/backend protocol version supported. */
+
+#define PG_PROTOCOL_EARLIEST	PG_PROTOCOL(2,0)
+#define PG_PROTOCOL_LATEST		PG_PROTOCOL(3,0)
+
+typedef uint32 ProtocolVersion; /* FE/BE protocol version number */
+
+typedef ProtocolVersion MsgType;
+
+
+/*
+ * Packet lengths are 4 bytes in network byte order.
+ *
+ * The initial length is omitted from the packet layouts appearing below.
+ */
+
+typedef uint32 PacketLen;
+
+
+/*
+ * Old-style startup packet layout with fixed-width fields.  This is used in
+ * protocol 1.0 and 2.0, but not in later versions.  Note that the fields
+ * in this layout are '\0' terminated only if there is room.
+ */
+
+#define SM_DATABASE		64
+#define SM_USER			32
+/* We append database name if db_user_namespace true. */
+#define SM_DATABASE_USER (SM_DATABASE+SM_USER+1)	/* +1 for @ */
+#define SM_OPTIONS		64
+#define SM_UNUSED		64
+#define SM_TTY			64
+
+typedef struct StartupPacket
+{
+	ProtocolVersion protoVersion;	/* Protocol version */
+	char		database[SM_DATABASE];	/* Database name */
+	/* Db_user_namespace appends dbname */
+	char		user[SM_USER];	/* User name */
+	char		options[SM_OPTIONS];	/* Optional additional args */
+	char		unused[SM_UNUSED];	/* Unused */
+	char		tty[SM_TTY];	/* Tty for debug output */
+} StartupPacket;
+
+extern bool Db_user_namespace;
+
+/*
+ * In protocol 3.0 and later, the startup packet length is not fixed, but
+ * we set an arbitrary limit on it anyway.  This is just to prevent simple
+ * denial-of-service attacks via sending enough data to run the server
+ * out of memory.
+ */
+#define MAX_STARTUP_PACKET_LENGTH 10000
+
+
+/* These are the authentication request codes sent by the backend. */
+
+#define AUTH_REQ_OK			0	/* User is authenticated  */
+#define AUTH_REQ_KRB4		1	/* Kerberos V4. Not supported any more. */
+#define AUTH_REQ_KRB5		2	/* Kerberos V5. Not supported any more. */
+#define AUTH_REQ_PASSWORD	3	/* Password */
+#define AUTH_REQ_CRYPT		4	/* crypt password. Not supported any more. */
+#define AUTH_REQ_MD5		5	/* md5 password */
+#define AUTH_REQ_SCM_CREDS	6	/* transfer SCM credentials */
+#define AUTH_REQ_GSS		7	/* GSSAPI without wrap() */
+#define AUTH_REQ_GSS_CONT	8	/* Continue GSS exchanges */
+#define AUTH_REQ_SSPI		9	/* SSPI negotiate without wrap() */
+#define AUTH_REQ_SASL	   10	/* Begin SASL authentication */
+#define AUTH_REQ_SASL_CONT 11	/* Continue SASL authentication */
+#define AUTH_REQ_SASL_FIN  12	/* Final SASL message */
+
+typedef uint32 AuthRequest;
+
+
+/*
+ * A client can also send a cancel-current-operation request to the postmaster.
+ * This is uglier than sending it directly to the client's backend, but it
+ * avoids depending on out-of-band communication facilities.
+ *
+ * The cancel request code must not match any protocol version number
+ * we're ever likely to use.  This random choice should do.
+ */
+#define CANCEL_REQUEST_CODE PG_PROTOCOL(1234,5678)
+
+typedef struct CancelRequestPacket
+{
+	/* Note that each field is stored in network byte order! */
+	MsgType		cancelRequestCode;	/* code to identify a cancel request */
+	uint32		backendPID;		/* PID of client's backend */
+	uint32		cancelAuthCode; /* secret key to authorize cancel */
+} CancelRequestPacket;
+
+
+/*
+ * A client can also start by sending a SSL negotiation request, to get a
+ * secure channel.
+ */
+#define NEGOTIATE_SSL_CODE PG_PROTOCOL(1234,5679)
+
+#endif							/* PQCOMM_H */

+/*-------------------------------------------------------------------------
+ *
+ * port.h
+ *	  Header for src/port/ compatibility functions.
+ *
+ * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/port.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_PORT_H
+#define PG_PORT_H
+
+#include <ctype.h>
+#include <netdb.h>
+#include <pwd.h>
+
+/*
+ * Windows has enough specialized port stuff that we push most of it off
+ * into another file.
+ * Note: Some CYGWIN includes might #define WIN32.
+ */
+#if defined(WIN32) && !defined(__CYGWIN__)
+#include "port/win32_port.h"
+#endif
+
+/* socket has a different definition on WIN32 */
+#ifndef WIN32
+typedef int pgsocket;
+
+#define PGINVALID_SOCKET (-1)
+#else
+typedef SOCKET pgsocket;
+
+#define PGINVALID_SOCKET INVALID_SOCKET
+#endif
+
+/* non-blocking */
+extern bool pg_set_noblock(pgsocket sock);
+extern bool pg_set_block(pgsocket sock);
+
+/* Portable path handling for Unix/Win32 (in path.c) */
+
+extern bool has_drive_prefix(const char *filename);
+extern char *first_dir_separator(const char *filename);
+extern char *last_dir_separator(const char *filename);
+extern char *first_path_var_separator(const char *pathlist);
+extern void join_path_components(char *ret_path,
+					 const char *head, const char *tail);
+extern void canonicalize_path(char *path);
+extern void make_native_path(char *path);
+extern void cleanup_path(char *path);
+extern bool path_contains_parent_reference(const char *path);
+extern bool path_is_relative_and_below_cwd(const char *path);
+extern bool path_is_prefix_of_path(const char *path1, const char *path2);
+extern char *make_absolute_path(const char *path);
+extern const char *get_progname(const char *argv0);
+extern void get_share_path(const char *my_exec_path, char *ret_path);
+extern void get_etc_path(const char *my_exec_path, char *ret_path);
+extern void get_include_path(const char *my_exec_path, char *ret_path);
+extern void get_pkginclude_path(const char *my_exec_path, char *ret_path);
+extern void get_includeserver_path(const char *my_exec_path, char *ret_path);
+extern void get_lib_path(const char *my_exec_path, char *ret_path);
+extern void get_pkglib_path(const char *my_exec_path, char *ret_path);
+extern void get_locale_path(const char *my_exec_path, char *ret_path);
+extern void get_doc_path(const char *my_exec_path, char *ret_path);
+extern void get_html_path(const char *my_exec_path, char *ret_path);
+extern void get_man_path(const char *my_exec_path, char *ret_path);
+extern bool get_home_path(char *ret_path);
+extern void get_parent_directory(char *path);
+
+/* common/pgfnames.c */
+extern char **pgfnames(const char *path);
+extern void pgfnames_cleanup(char **filenames);
+
+/*
+ *	is_absolute_path
+ *
+ *	By making this a macro we avoid needing to include path.c in libpq.
+ */
+#ifndef WIN32
+#define IS_DIR_SEP(ch)	((ch) == '/')
+
+#define is_absolute_path(filename) \
+( \
+	IS_DIR_SEP((filename)[0]) \
+)
+#else
+#define IS_DIR_SEP(ch)	((ch) == '/' || (ch) == '\\')
+
+/* See path_is_relative_and_below_cwd() for how we handle 'E:abc'. */
+#define is_absolute_path(filename) \
+( \
+	IS_DIR_SEP((filename)[0]) || \
+	(isalpha((unsigned char) ((filename)[0])) && (filename)[1] == ':' && \
+	 IS_DIR_SEP((filename)[2])) \
+)
+#endif
+
+/* Portable locale initialization (in exec.c) */
+extern void set_pglocale_pgservice(const char *argv0, const char *app);
+
+/* Portable way to find binaries (in exec.c) */
+extern int	find_my_exec(const char *argv0, char *retpath);
+extern int find_other_exec(const char *argv0, const char *target,
+				const char *versionstr, char *retpath);
+
+/* Doesn't belong here, but this is used with find_other_exec(), so... */
+#define PG_BACKEND_VERSIONSTR "postgres (PostgreSQL) " PG_VERSION "\n"
+
+
+#if defined(WIN32) || defined(__CYGWIN__)
+#define EXE ".exe"
+#else
+#define EXE ""
+#endif
+
+#if defined(WIN32) && !defined(__CYGWIN__)
+#define DEVNULL "nul"
+#else
+#define DEVNULL "/dev/null"
+#endif
+
+/* Portable delay handling */
+extern void pg_usleep(long microsec);
+
+/* Portable SQL-like case-independent comparisons and conversions */
+extern int	pg_strcasecmp(const char *s1, const char *s2);
+extern int	pg_strncasecmp(const char *s1, const char *s2, size_t n);
+extern unsigned char pg_toupper(unsigned char ch);
+extern unsigned char pg_tolower(unsigned char ch);
+extern unsigned char pg_ascii_toupper(unsigned char ch);
+extern unsigned char pg_ascii_tolower(unsigned char ch);
+
+#ifdef USE_REPL_SNPRINTF
+
+/*
+ * Versions of libintl >= 0.13 try to replace printf() and friends with
+ * macros to their own versions that understand the %$ format.  We do the
+ * same, so disable their macros, if they exist.
+ */
+#ifdef vsnprintf
+#undef vsnprintf
+#endif
+#ifdef snprintf
+#undef snprintf
+#endif
+#ifdef sprintf
+#undef sprintf
+#endif
+#ifdef vfprintf
+#undef vfprintf
+#endif
+#ifdef fprintf
+#undef fprintf
+#endif
+#ifdef printf
+#undef printf
+#endif
+
+extern int	pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
+extern int	pg_snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3, 4);
+extern int	pg_sprintf(char *str, const char *fmt,...) pg_attribute_printf(2, 3);
+extern int	pg_vfprintf(FILE *stream, const char *fmt, va_list args);
+extern int	pg_fprintf(FILE *stream, const char *fmt,...) pg_attribute_printf(2, 3);
+extern int	pg_printf(const char *fmt,...) pg_attribute_printf(1, 2);
+
+/*
+ *	The GCC-specific code below prevents the pg_attribute_printf above from
+ *	being replaced, and this is required because gcc doesn't know anything
+ *	about pg_printf.
+ */
+#ifdef __GNUC__
+#define vsnprintf(...)	pg_vsnprintf(__VA_ARGS__)
+#define snprintf(...)	pg_snprintf(__VA_ARGS__)
+#define sprintf(...)	pg_sprintf(__VA_ARGS__)
+#define vfprintf(...)	pg_vfprintf(__VA_ARGS__)
+#define fprintf(...)	pg_fprintf(__VA_ARGS__)
+#define printf(...)		pg_printf(__VA_ARGS__)
+#else
+#define vsnprintf		pg_vsnprintf
+#define snprintf		pg_snprintf
+#define sprintf			pg_sprintf
+#define vfprintf		pg_vfprintf
+#define fprintf			pg_fprintf
+#define printf			pg_printf
+#endif
+#endif							/* USE_REPL_SNPRINTF */
+
+/* Portable prompt handling */
+extern void simple_prompt(const char *prompt, char *destination, size_t destlen,
+			  bool echo);
+
+extern int	pclose_check(FILE *stream);
+
+/* Global variable holding time zone information. */
+#if defined(WIN32) || defined(__CYGWIN__)
+#define TIMEZONE_GLOBAL _timezone
+#define TZNAME_GLOBAL _tzname
+#else
+#define TIMEZONE_GLOBAL timezone
+#define TZNAME_GLOBAL tzname
+#endif
+
+#if defined(WIN32) || defined(__CYGWIN__)
+/*
+ *	Win32 doesn't have reliable rename/unlink during concurrent access.
+ */
+extern int	pgrename(const char *from, const char *to);
+extern int	pgunlink(const char *path);
+
+/* Include this first so later includes don't see these defines */
+#ifdef _MSC_VER
+#include <io.h>
+#endif
+
+#define rename(from, to)		pgrename(from, to)
+#define unlink(path)			pgunlink(path)
+#endif							/* defined(WIN32) || defined(__CYGWIN__) */
+
+/*
+ *	Win32 also doesn't have symlinks, but we can emulate them with
+ *	junction points on newer Win32 versions.
+ *
+ *	Cygwin has its own symlinks which work on Win95/98/ME where
+ *	junction points don't, so use those instead.  We have no way of
+ *	knowing what type of system Cygwin binaries will be run on.
+ *		Note: Some CYGWIN includes might #define WIN32.
+ */
+#if defined(WIN32) && !defined(__CYGWIN__)
+extern int	pgsymlink(const char *oldpath, const char *newpath);
+extern int	pgreadlink(const char *path, char *buf, size_t size);
+extern bool pgwin32_is_junction(const char *path);
+
+#define symlink(oldpath, newpath)	pgsymlink(oldpath, newpath)
+#define readlink(path, buf, size)	pgreadlink(path, buf, size)
+#endif
+
+extern bool rmtree(const char *path, bool rmtopdir);
+
+#if defined(WIN32) && !defined(__CYGWIN__)
+
+/*
+ * open() and fopen() replacements to allow deletion of open files and
+ * passing of other special options.
+ */
+#define		O_DIRECT	0x80000000
+extern int	pgwin32_open(const char *, int,...);
+extern FILE *pgwin32_fopen(const char *, const char *);
+
+#ifndef FRONTEND
+#define		open(a,b,c) pgwin32_open(a,b,c)
+#define		fopen(a,b) pgwin32_fopen(a,b)
+#endif
+
+/*
+ * Mingw-w64 headers #define popen and pclose to _popen and _pclose.  We want
+ * to use our popen wrapper, rather than plain _popen, so override that.  For
+ * consistency, use our version of pclose, too.
+ */
+#ifdef popen
+#undef popen
+#endif
+#ifdef pclose
+#undef pclose
+#endif
+
+/*
+ * system() and popen() replacements to enclose the command in an extra
+ * pair of quotes.
+ */
+extern int	pgwin32_system(const char *command);
+extern FILE *pgwin32_popen(const char *command, const char *type);
+
+#define system(a) pgwin32_system(a)
+#define popen(a,b) pgwin32_popen(a,b)
+#define pclose(a) _pclose(a)
+
+/* New versions of MingW have gettimeofday, old mingw and msvc don't */
+#ifndef HAVE_GETTIMEOFDAY
+/* Last parameter not used */
+extern int	gettimeofday(struct timeval *tp, struct timezone *tzp);
+#endif
+#else							/* !WIN32 */
+
+/*
+ *	Win32 requires a special close for sockets and pipes, while on Unix
+ *	close() does them all.
+ */
+#define closesocket close
+#endif							/* WIN32 */
+
+/*
+ * On Windows, setvbuf() does not support _IOLBF mode, and interprets that
+ * as _IOFBF.  To add insult to injury, setvbuf(file, NULL, _IOFBF, 0)
+ * crashes outright if "parameter validation" is enabled.  Therefore, in
+ * places where we'd like to select line-buffered mode, we fall back to
+ * unbuffered mode instead on Windows.  Always use PG_IOLBF not _IOLBF
+ * directly in order to implement this behavior.
+ */
+#ifndef WIN32
+#define PG_IOLBF	_IOLBF
+#else
+#define PG_IOLBF	_IONBF
+#endif
+
+/*
+ * Default "extern" declarations or macro substitutes for library routines.
+ * When necessary, these routines are provided by files in src/port/.
+ */
+#ifndef HAVE_CRYPT
+extern char *crypt(const char *key, const char *setting);
+#endif
+
+/* WIN32 handled in port/win32_port.h */
+#ifndef WIN32
+#define pgoff_t off_t
+#ifdef __NetBSD__
+extern int	fseeko(FILE *stream, off_t offset, int whence);
+extern off_t ftello(FILE *stream);
+#endif
+#endif
+
+extern double pg_erand48(unsigned short xseed[3]);
+extern long pg_lrand48(void);
+extern long pg_jrand48(unsigned short xseed[3]);
+extern void pg_srand48(long seed);
+
+#ifndef HAVE_FLS
+extern int	fls(int mask);
+#endif
+
+#ifndef HAVE_FSEEKO
+#define fseeko(a, b, c) fseek(a, b, c)
+#define ftello(a)		ftell(a)
+#endif
+
+#if !defined(HAVE_GETPEEREID) && !defined(WIN32)
+extern int	getpeereid(int sock, uid_t *uid, gid_t *gid);
+#endif
+
+#ifndef HAVE_ISINF
+extern int	isinf(double x);
+#else
+/*
+ * Glibc doesn't use the builtin for clang due to a *gcc* bug in a version
+ * newer than the gcc compatibility clang claims to have. This would cause a
+ * *lot* of superfluous function calls, therefore revert when using clang. In
+ * C++ there's issues with libc++ (not libstdc++), so disable as well.
+ */
+#if defined(__clang__) && !defined(__cplusplus)
+/* needs to be separate to not confuse other compilers */
+#if __has_builtin(__builtin_isinf)
+/* need to include before, to avoid getting overwritten */
+#include <math.h>
+#undef isinf
+#define isinf __builtin_isinf
+#endif							/* __has_builtin(isinf) */
+#endif							/* __clang__ && !__cplusplus*/
+#endif							/* !HAVE_ISINF */
+
+#ifndef HAVE_MKDTEMP
+extern char *mkdtemp(char *path);
+#endif
+
+#ifndef HAVE_RINT
+extern double rint(double x);
+#endif
+
+#ifndef HAVE_INET_ATON
+#include <netinet/in.h>
+#include <arpa/inet.h>
+extern int	inet_aton(const char *cp, struct in_addr *addr);
+#endif
+
+#if !HAVE_DECL_STRLCAT
+extern size_t strlcat(char *dst, const char *src, size_t siz);
+#endif
+
+#if !HAVE_DECL_STRLCPY
+extern size_t strlcpy(char *dst, const char *src, size_t siz);
+#endif
+
+#if !HAVE_DECL_STRNLEN
+extern size_t strnlen(const char *str, size_t maxlen);
+#endif
+
+#if !defined(HAVE_RANDOM)
+extern long random(void);
+#endif
+
+#ifndef HAVE_UNSETENV
+extern void unsetenv(const char *name);
+#endif
+
+#ifndef HAVE_SRANDOM
+extern void srandom(unsigned int seed);
+#endif
+
+#ifndef HAVE_SSL_GET_CURRENT_COMPRESSION
+#define SSL_get_current_compression(x) 0
+#endif
+
+/* thread.h */
+extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen);
+
+#ifndef WIN32
+extern int pqGetpwuid(uid_t uid, struct passwd *resultbuf, char *buffer,
+		   size_t buflen, struct passwd **result);
+#endif
+
+extern int pqGethostbyname(const char *name,
+				struct hostent *resultbuf,
+				char *buffer, size_t buflen,
+				struct hostent **result,
+				int *herrno);
+
+extern void pg_qsort(void *base, size_t nel, size_t elsize,
+		 int (*cmp) (const void *, const void *));
+extern int	pg_qsort_strcmp(const void *a, const void *b);
+
+#define qsort(a,b,c,d) pg_qsort(a,b,c,d)
+
+typedef int (*qsort_arg_comparator) (const void *a, const void *b, void *arg);
+
+extern void qsort_arg(void *base, size_t nel, size_t elsize,
+		  qsort_arg_comparator cmp, void *arg);
+
+/* port/chklocale.c */
+extern int	pg_get_encoding_from_locale(const char *ctype, bool write_message);
+
+#if defined(WIN32) && !defined(FRONTEND)
+extern int	pg_codepage_to_encoding(UINT cp);
+#endif
+
+/* port/inet_net_ntop.c */
+extern char *inet_net_ntop(int af, const void *src, int bits,
+			  char *dst, size_t size);
+
+/* port/pg_strong_random.c */
+#ifdef HAVE_STRONG_RANDOM
+extern bool pg_strong_random(void *buf, size_t len);
+#endif
+
+/* port/pgcheckdir.c */
+extern int	pg_check_dir(const char *dir);
+
+/* port/pgmkdirp.c */
+extern int	pg_mkdir_p(char *path, int omode);
+
+/* port/pqsignal.c */
+typedef void (*pqsigfunc) (int signo);
+extern pqsigfunc pqsignal(int signo, pqsigfunc func);
+#ifndef WIN32
+extern pqsigfunc pqsignal_no_restart(int signo, pqsigfunc func);
+#else
+#define pqsignal_no_restart(signo, func) pqsignal(signo, func)
+#endif
+
+/* port/quotes.c */
+extern char *escape_single_quotes_ascii(const char *src);
+
+/* port/wait_error.c */
+extern char *wait_result_to_str(int exit_status);
+
+#endif							/* PG_PORT_H */

+/*-------------------------------------------------------------------------
+ *
+ * postgres_fe.h
+ *	  Primary include file for PostgreSQL client-side .c files
+ *
+ * This should be the first file included by PostgreSQL client libraries and
+ * application programs --- but not by backend modules, which should include
+ * postgres.h.
+ *
+ *
+ * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1995, Regents of the University of California
+ *
+ * src/include/postgres_fe.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef POSTGRES_FE_H
+#define POSTGRES_FE_H
+
+#ifndef FRONTEND
+#define FRONTEND 1
+#endif
+
+#include "c.h"
+
+#include "common/fe_memutils.h"
+
+#endif							/* POSTGRES_FE_H */

+/*-------------------------------------------------------------------------
+ *
+ * pqexpbuffer.h
+ *	  Declarations/definitions for "PQExpBuffer" functions.
+ *
+ * PQExpBuffer provides an indefinitely-extensible string data type.
+ * It can be used to buffer either ordinary C strings (null-terminated text)
+ * or arbitrary binary data.  All storage is allocated with malloc().
+ *
+ * This module is essentially the same as the backend's StringInfo data type,
+ * but it is intended for use in frontend libpq and client applications.
+ * Thus, it does not rely on palloc() nor elog().
+ *
+ * It does rely on vsnprintf(); if configure finds that libc doesn't provide
+ * a usable vsnprintf(), then a copy of our own implementation of it will
+ * be linked into libpq.
+ *
+ * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/interfaces/libpq/pqexpbuffer.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PQEXPBUFFER_H
+#define PQEXPBUFFER_H
+
+/*-------------------------
+ * PQExpBufferData holds information about an extensible string.
+ *		data	is the current buffer for the string (allocated with malloc).
+ *		len		is the current string length.  There is guaranteed to be
+ *				a terminating '\0' at data[len], although this is not very
+ *				useful when the string holds binary data rather than text.
+ *		maxlen	is the allocated size in bytes of 'data', i.e. the maximum
+ *				string size (including the terminating '\0' char) that we can
+ *				currently store in 'data' without having to reallocate
+ *				more space.  We must always have maxlen > len.
+ *
+ * An exception occurs if we failed to allocate enough memory for the string
+ * buffer.  In that case data points to a statically allocated empty string,
+ * and len = maxlen = 0.
+ *-------------------------
+ */
+typedef struct PQExpBufferData
+{
+	char	   *data;
+	size_t		len;
+	size_t		maxlen;
+} PQExpBufferData;
+
+typedef PQExpBufferData *PQExpBuffer;
+
+/*------------------------
+ * Test for a broken (out of memory) PQExpBuffer.
+ * When a buffer is "broken", all operations except resetting or deleting it
+ * are no-ops.
+ *------------------------
+ */
+#define PQExpBufferBroken(str)	\
+	((str) == NULL || (str)->maxlen == 0)
+
+/*------------------------
+ * Same, but for use when using a static or local PQExpBufferData struct.
+ * For that, a null-pointer test is useless and may draw compiler warnings.
+ *------------------------
+ */
+#define PQExpBufferDataBroken(buf)	\
+	((buf).maxlen == 0)
+
+/*------------------------
+ * Initial size of the data buffer in a PQExpBuffer.
+ * NB: this must be large enough to hold error messages that might
+ * be returned by PQrequestCancel().
+ *------------------------
+ */
+#define INITIAL_EXPBUFFER_SIZE	256
+
+/*------------------------
+ * There are two ways to create a PQExpBuffer object initially:
+ *
+ * PQExpBuffer stringptr = createPQExpBuffer();
+ *		Both the PQExpBufferData and the data buffer are malloc'd.
+ *
+ * PQExpBufferData string;
+ * initPQExpBuffer(&string);
+ *		The data buffer is malloc'd but the PQExpBufferData is presupplied.
+ *		This is appropriate if the PQExpBufferData is a field of another
+ *		struct.
+ *-------------------------
+ */
+
+/*------------------------
+ * createPQExpBuffer
+ * Create an empty 'PQExpBufferData' & return a pointer to it.
+ */
+extern PQExpBuffer createPQExpBuffer(void);
+
+/*------------------------
+ * initPQExpBuffer
+ * Initialize a PQExpBufferData struct (with previously undefined contents)
+ * to describe an empty string.
+ */
+extern void initPQExpBuffer(PQExpBuffer str);
+
+/*------------------------
+ * To destroy a PQExpBuffer, use either:
+ *
+ * destroyPQExpBuffer(str);
+ *		free()s both the data buffer and the PQExpBufferData.
+ *		This is the inverse of createPQExpBuffer().
+ *
+ * termPQExpBuffer(str)
+ *		free()s the data buffer but not the PQExpBufferData itself.
+ *		This is the inverse of initPQExpBuffer().
+ *
+ * NOTE: some routines build up a string using PQExpBuffer, and then
+ * release the PQExpBufferData but return the data string itself to their
+ * caller.  At that point the data string looks like a plain malloc'd
+ * string.
+ */
+extern void destroyPQExpBuffer(PQExpBuffer str);
+extern void termPQExpBuffer(PQExpBuffer str);
+
+/*------------------------
+ * resetPQExpBuffer
+ *		Reset a PQExpBuffer to empty
+ *
+ * Note: if possible, a "broken" PQExpBuffer is returned to normal.
+ */
+extern void resetPQExpBuffer(PQExpBuffer str);
+
+/*------------------------
+ * enlargePQExpBuffer
+ * Make sure there is enough space for 'needed' more bytes in the buffer
+ * ('needed' does not include the terminating null).
+ *
+ * Returns 1 if OK, 0 if failed to enlarge buffer.  (In the latter case
+ * the buffer is left in "broken" state.)
+ */
+extern int	enlargePQExpBuffer(PQExpBuffer str, size_t needed);
+
+/*------------------------
+ * printfPQExpBuffer
+ * Format text data under the control of fmt (an sprintf-like format string)
+ * and insert it into str.  More space is allocated to str if necessary.
+ * This is a convenience routine that does the same thing as
+ * resetPQExpBuffer() followed by appendPQExpBuffer().
+ */
+extern void printfPQExpBuffer(PQExpBuffer str, const char *fmt,...) pg_attribute_printf(2, 3);
+
+/*------------------------
+ * appendPQExpBuffer
+ * Format text data under the control of fmt (an sprintf-like format string)
+ * and append it to whatever is already in str.  More space is allocated
+ * to str if necessary.  This is sort of like a combination of sprintf and
+ * strcat.
+ */
+extern void appendPQExpBuffer(PQExpBuffer str, const char *fmt,...) pg_attribute_printf(2, 3);
+
+/*------------------------
+ * appendPQExpBufferStr
+ * Append the given string to a PQExpBuffer, allocating more space
+ * if necessary.
+ */
+extern void appendPQExpBufferStr(PQExpBuffer str, const char *data);
+
+/*------------------------
+ * appendPQExpBufferChar
+ * Append a single byte to str.
+ * Like appendPQExpBuffer(str, "%c", ch) but much faster.
+ */
+extern void appendPQExpBufferChar(PQExpBuffer str, char ch);
+
+/*------------------------
+ * appendBinaryPQExpBuffer
+ * Append arbitrary binary data to a PQExpBuffer, allocating more space
+ * if necessary.
+ */
+extern void appendBinaryPQExpBuffer(PQExpBuffer str,
+						const char *data, size_t datalen);
+
+#endif							/* PQEXPBUFFER_H */

+/*-------------------------------------------------------------------------
+ *
+ * libpq-events.h
+ *	  This file contains definitions that are useful to applications
+ *	  that invoke the libpq "events" API, but are not interesting to
+ *	  ordinary users of libpq.
+ *
+ * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/interfaces/libpq/libpq-events.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef LIBPQ_EVENTS_H
+#define LIBPQ_EVENTS_H
+
+#include "libpq-fe.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Callback Event Ids */
+typedef enum
+{
+	PGEVT_REGISTER,
+	PGEVT_CONNRESET,
+	PGEVT_CONNDESTROY,
+	PGEVT_RESULTCREATE,
+	PGEVT_RESULTCOPY,
+	PGEVT_RESULTDESTROY
+} PGEventId;
+
+typedef struct
+{
+	PGconn	   *conn;
+} PGEventRegister;
+
+typedef struct
+{
+	PGconn	   *conn;
+} PGEventConnReset;
+
+typedef struct
+{
+	PGconn	   *conn;
+} PGEventConnDestroy;
+
+typedef struct
+{
+	PGconn	   *conn;
+	PGresult   *result;
+} PGEventResultCreate;
+
+typedef struct
+{
+	const PGresult *src;
+	PGresult   *dest;
+} PGEventResultCopy;
+
+typedef struct
+{
+	PGresult   *result;
+} PGEventResultDestroy;
+
+typedef int (*PGEventProc) (PGEventId evtId, void *evtInfo, void *passThrough);
+
+/* Registers an event proc with the given PGconn. */
+extern int PQregisterEventProc(PGconn *conn, PGEventProc proc,
+					const char *name, void *passThrough);
+
+/* Sets the PGconn instance data for the provided proc to data. */
+extern int	PQsetInstanceData(PGconn *conn, PGEventProc proc, void *data);
+
+/* Gets the PGconn instance data for the provided proc. */
+extern void *PQinstanceData(const PGconn *conn, PGEventProc proc);
+
+/* Sets the PGresult instance data for the provided proc to data. */
+extern int	PQresultSetInstanceData(PGresult *result, PGEventProc proc, void *data);
+
+/* Gets the PGresult instance data for the provided proc. */
+extern void *PQresultInstanceData(const PGresult *result, PGEventProc proc);
+
+/* Fires RESULTCREATE events for an application-created PGresult. */
+extern int	PQfireResultCreateEvents(PGconn *conn, PGresult *res);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif							/* LIBPQ_EVENTS_H */