// c:\Program Files\Microsoft SDKs\Windows\v7.0A\Include\WinNls.h
#define CP_ACP 0 // default to ANSI code page
#define CP_OEMCP 1 // default to OEM code page
#define CP_MACCP 2 // default to MAC code page
#define CP_THREAD_ACP 3 // current thread's ANSI code page
#define CP_SYMBOL 42 // SYMBOL translations
#define CP_UTF7 65000 // UTF-7 translation
#define CP_UTF8 65001 // UTF-8 translation
// -- c:\Program Files\Microsoft SDKs\Windows\v7.0A\Include\WinNT.h
//
// UNICODE (Wide Character) types
//
#ifndef _MAC
typedef wchar_t WCHAR; // wc, 16-bit UNICODE character
#else
// some Macintosh compilers don't define wchar_t in a convenient location, or define it as a char
typedef unsigned short WCHAR; // wc, 16-bit UNICODE character
#endif
typedef WCHAR *PWCHAR, *LPWCH, *PWCH;
typedef CONST WCHAR *LPCWCH, *PCWCH;
typedef __nullterminated WCHAR *NWPSTR, *LPWSTR, *PWSTR;
......
typedef __nullterminated CONST WCHAR *LPCWSTR, *PCWSTR;
......
//
// ANSI (Multi-byte Character) types
//
typedef CHAR *PCHAR, *LPCH, *PCH;
typedef CONST CHAR *LPCCH, *PCCH;
typedef __nullterminated CHAR *NPSTR, *LPSTR, *PSTR;
......
typedef __nullterminated CONST CHAR *LPCSTR, *PCSTR;
......
//
// 多字节(一般指GBK) utf8 Unicode 编码互转
/*
MultiByteToWideChar: 将MultiByte(多字节编码(CP_ACP)、GBK(CP_ACP)、UTF8(CP_UTF8))转换为WideChar(Unicode 编码)。
如 MultiByteToWideChar(CP_ACP, 0, old_str, old_str_len, new_str, new_Len);
表示将CP_ACP类型的old_str转换为WideChar类型；CP_ACP标识 从哪种类型的MultiByte转换为WideChar。
WideCharToMultiByte: 将WideChar(Unicode 编码)转换为MultiByte(多字节编码(CP_ACP)、GBK(CP_ACP)、UTF8(CP_UTF8))。
如 WideCharToMultiByte(CP_UTF8, 0, old_str, old_str_len, new_str, new_Len, NULL, NULL);
表示将WideChar类型的old_str转换为CP_UTF8类型的MultiByte。CP_ACP标识 WideChar要转换为哪种类型的MultiByte。
MultiByte1 转换为 MultiByte2 ，先将MultiByte1转为将WideChar，再从将WideChar转为MultiByte2。
*/
std::string Utf8ToGBK(const char* strUtf8)
{
//不是utf8编码，返回原串
unsigned char code_mark = strUtf8[0];
if(code_mark <= 0xE0)
{
return strUtf8;
}
int len=MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)strUtf8, -1, NULL,0);
unsigned short * wszGBK = new unsigned short[len+1];
memset(wszGBK, 0, len * 2 + 2);
MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)strUtf8, -1, (LPWSTR)wszGBK, len);
len = WideCharToMultiByte(CP_ACP, 0, (LPCWSTR)wszGBK, -1, NULL, 0, NULL, NULL);
char *szGBK=new char[len + 1];
memset(szGBK, 0, len + 1);
WideCharToMultiByte (CP_ACP, 0, (LPCWSTR)wszGBK, -1, (LPSTR)szGBK, len, NULL,NULL);
std::string gbkString = szGBK;
delete[] wszGBK;
delete[] szGBK;
return gbkString;
}
// 多字节编码转为UTF8编码
bool MBToUTF8(vector<char>& pu8, const char* pmb, int32 mLen)
{
// convert an MBCS string to widechar
int32 nLen = MultiByteToWideChar(CP_ACP, 0, pmb, mLen, NULL, 0);
WCHAR* lpszW = NULL;
try
{
lpszW = new WCHAR[nLen];
}
catch(bad_alloc &memExp)
{
return false;
}
int32 nRtn = MultiByteToWideChar(CP_ACP, 0, pmb, mLen, lpszW, nLen);
if(nRtn != nLen)
{
delete[] lpszW;
return false;
}
// convert an widechar string to utf8
int32 utf8Len = WideCharToMultiByte(CP_UTF8, 0, lpszW, nLen, NULL, 0, NULL, NULL);
if (utf8Len <= 0)
{
return false;
}
pu8.resize(utf8Len);
nRtn = WideCharToMultiByte(CP_UTF8, 0, lpszW, nLen, &*pu8.begin(), utf8Len, NULL, NULL);
delete[] lpszW;
if (nRtn != utf8Len)
{
pu8.clear();
return false;
}
return true;
}
// UTF8编码转为多字节编码
bool UTF8ToMB(vector<char>& pmb, const char* pu8, int32 utf8Len)
{
// convert an UTF8 string to widechar
int32 nLen = MultiByteToWideChar(CP_UTF8, 0, pu8, utf8Len, NULL, 0);
WCHAR* lpszW = NULL;
try
{
lpszW = new WCHAR[nLen];
}
catch(bad_alloc &memExp)
{
return false;
}
int32 nRtn = MultiByteToWideChar(CP_UTF8, 0, pu8, utf8Len, lpszW, nLen);
if(nRtn != nLen)
{
delete[] lpszW;
return false;
}
// convert an widechar string to Multibyte
int32 MBLen = WideCharToMultiByte(CP_ACP, 0, lpszW, nLen, NULL, 0, NULL, NULL);
if (MBLen <=0)
{
return false;
}
pmb.resize(MBLen);
nRtn = WideCharToMultiByte(CP_ACP, 0, lpszW, nLen, &*pmb.begin(), MBLen, NULL, NULL);
delete[] lpszW;
if(nRtn != MBLen)
{
pmb.clear();
return false;
}
return true;
}
// 多字节编码转为Unicode编码
bool MBToUnicode(vector<wchar_t>& pun, const char* pmb, int32 mLen)
{
// convert an MBCS string to widechar
int32 uLen = MultiByteToWideChar(CP_ACP, 0, pmb, mLen, NULL, 0);
if (uLen<=0)
{
return false;
}
pun.resize(uLen);
int32 nRtn = MultiByteToWideChar(CP_ACP, 0, pmb, mLen, &*pun.begin(), uLen);
if (nRtn != uLen)
{
pun.clear();
return false;
}
return true;
}
//Unicode编码转为多字节编码
bool UnicodeToMB(vector<char>& pmb, const wchar_t* pun, int32 uLen)
{
// convert an widechar string to Multibyte
int32 MBLen = WideCharToMultiByte(CP_ACP, 0, pun, uLen, NULL, 0, NULL, NULL);
if (MBLen <=0)
{
return false;
}
pmb.resize(MBLen);
int nRtn = WideCharToMultiByte(CP_ACP, 0, pun, uLen, &*pmb.begin(), MBLen, NULL, NULL);
if(nRtn != MBLen)
{
pmb.clear();
return false;
}
return true;
}
// UTF8编码转为Unicode
bool UTF8ToUnicode(vector<wchar_t>& pun, const char* pu8, int32 utf8Len)
{
// convert an UTF8 string to widechar
int32 nLen = MultiByteToWideChar(CP_UTF8, 0, pu8, utf8Len, NULL, 0);
if (nLen <=0)
{
return false;
}
pun.resize(nLen);
int32 nRtn = MultiByteToWideChar(CP_UTF8, 0, pu8, utf8Len, &*pun.begin(), nLen);
if(nRtn != nLen)
{
pun.clear();
return false;
}
return true;
}
// Unicode编码转为UTF8
bool UnicodeToUTF8(vector<char>& pu8, const wchar_t* pun, int32 uLen)
{
// convert an widechar string to utf8
int32 utf8Len = WideCharToMultiByte(CP_UTF8, 0, pun, uLen, NULL, 0, NULL, NULL);
if (utf8Len<=0)
{
return false;
}
pu8.resize(utf8Len);
int32 nRtn = WideCharToMultiByte(CP_UTF8, 0, pun, uLen, &*pu8.begin(), utf8Len, NULL, NULL);
if (nRtn != utf8Len)
{
pu8.clear();
return false;
}
return true;
}
