add

+
+/**************************************************************************
+* file:              dmpserverutils.h
+
+* Author:            wanzhongping
+* Date:              2021-03-17 16:05:31
+* Email:             zhongpingw@chinadci.com
+* copyright:         广州城市信息研究所有限公司
+***************************************************************************/
+
+#ifndef __dmpserverutils_h__
+#define __dmpserverutils_h__
+
+#include "dmap_server.h"
+#include <boost/filesystem.hpp>
+#include <unordered_map>
+
+class SERVER_EXPORT DmpServerUtils
+{
+  public:
+    //获取目录下的所有dll或so库文件
+    static int GetLibraryPaths(const boost::filesystem::path &dir, std::vector<boost::filesystem::path> &locations);
+};
+
+  class CaseInsensitiveEqual {
+    public:
+      bool operator()(const std::string &str1, const std::string &str2) const noexcept {
+        return str1.size() == str2.size() &&
+           std::equal(str1.begin(), str1.end(), str2.begin(), [](char a, char b) {
+             return tolower(a) == tolower(b);
+           });
+      }
+  };
+  
+  class CaseInsensitiveHash {
+    public:
+      std::size_t operator()(const std::string &str) const noexcept {
+        std::size_t h = 0;
+        std::hash<int> hash;
+        for(auto c : str)
+          h ^= hash(tolower(c)) + 0x9e3779b9 + (h << 6) + (h >> 2);
+        return h;
+      }
+  };
+
+
+  using CaseInsensitiveMultimap = std::unordered_multimap<std::string, std::string, CaseInsensitiveHash, CaseInsensitiveEqual>;
+
+  // Percent encoding and decoding
+  class Percent {
+    public:
+      static std::string encode(const std::string &value) noexcept;
+      static std::string decode(const std::string &value) noexcept; 
+  };
+
+ 
+//自定义大小写不敏感的map
+struct ci_less : std::binary_function<std::string, std::string, bool>
+{
+  // case-independent (ci) compare_less binary function
+  struct nocase_compare : public std::binary_function<unsigned char, unsigned char, bool>
+  {
+    bool operator()(const unsigned char &c1, const unsigned char &c2) const
+    {
+      return tolower(c1) < tolower(c2);
+    }
+  };
+  bool operator()(const std::string &s1, const std::string &s2) const
+  {
+    return std::lexicographical_compare(s1.begin(), s1.end(), // source range
+                                        s2.begin(), s2.end(), // dest range
+                                        nocase_compare());    // comparison
+  }
+};
+
+using CIMap = std::map<std::string, std::string, ci_less>;
+
+ // Query string creation and parsing
+  class QueryString {
+    public:
+      // Returns query string created from given field names and values
+      static std::string create(const CIMap &fields) noexcept;
+      // Returns query keys with percent-decoded values.
+      static CIMap parse(const std::string &query_string) noexcept;
+  };
+
+
+#endif //__dmpserverutils_h__