port from perforce

aiwaz/Aiwaz/Common/StringHelper.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include <cstring>
+#include <string>
+
+#include <string>
+#include <vector>
+#include <locale>
+#include <functional>
+#include <iostream>
+
+#pragma warning(disable:4996)
+
+namespace std
+{
+	inline bool equal_nocase(const std::string &argStringA, const std::string &argStringB)
+	{
+		return 0 == stricmp (argStringA.c_str(), argStringB.c_str());
+	}
+
+	inline bool equal_nocase(const std::wstring &argStringA, const std::wstring &argStringB)
+	{
+		return 0 == wcsicmp(argStringA.c_str(), argStringB.c_str());
+	}
+
+	inline std::string to_string8(const std::wstring& argString)
+	{
+		if (argString.empty())
+			return std::string();
+
+		const std::ctype<wchar_t>* cType = &std::use_facet<std::ctype<wchar_t> >(std::locale());
+
+		std::wstring::size_type srcLen = argString.length();
+		const wchar_t* srcBegin = argString.c_str();
+		std::vector<char> tmp(srcLen);
+
+		cType->narrow(srcBegin, srcBegin + srcLen, '\0', &tmp[0]);
+		return std::string(&tmp[0], srcLen);
+	}
+
+	inline std::wstring to_string16(const std::string& argString)
+	{
+		if (argString.empty())
+			return std::wstring();
+
+		const std::ctype<wchar_t>* cType = &std::use_facet<std::ctype<wchar_t> >(std::locale());
+
+		std::wstring::size_type srcLen = argString.length();
+		const char* srcBegin = argString.c_str();
+		std::vector<wchar_t> tmp(srcLen);
+
+		cType->widen(srcBegin, srcBegin + srcLen, &tmp[0]);
+		return std::wstring(&tmp[0], srcLen);
+	}
+}
+
+#pragma warning(default:4996)