#ifndef __CHAR_CONVERT_H__#define __CHAR_CONVERT_H__#ifdef OS_WINDOWS#include <SDKDDKVer.h> //"targetver.h"#ifndef WIN32_LEAN_AND_MEAN#define WIN32_LEAN_AND_MEAN // 从 Windows 头文件中排除极少使用的信息#endif// Windows 头文件:#include <windows.h>#else // Linux#include "iconv.h"#ifndef ICONV_BUFFER_SIZE#define ICONV_BUFFER_SIZE 1024#endif#define WCHAR wchar_t#ifdef _UNICODE#define TCHAR wchar_t#else#define TCHAR char#endif#endif/////////////////////////////#define E_CHAR CWCharToChar::EChar#define E_WCHAR CWCharToChar::EWChar#define E_UTF8 CWCharToChar::EUtf8#define NULL_STR CWCharToChar::GetNullStr()static char g_NULL[2] = {0};/////////////////////////////// 简单的wchar_t 和 char 转换类, 且包含与UTF8的转换class CWCharToChar{public: enum { EChar = 1, EWChar = 2, EUtf8 = 4 };private: char * m_cDest; wchar_t * m_wcDest; char * m_cUtf8; unsigned int m_nSrcType;public: char * Char(void) { return m_cDest; } wchar_t * WChar(void){ return m_wcDest; } bool IsNullChar(void) { return ( !m_cDest || g_NULL == m_cDest ); } bool IsNullWChar(void) { return ( !m_wcDest || g_NULL == (char*)m_wcDest ); }#if defined( _UTF8_ ) char * UTF8(void) { return m_cUtf8; } bool IsNullUTF8(void) { return ( !m_cUtf8 || g_NULL == m_cUtf8 ); }#endif TCHAR * TChar(void) {#ifdef _UNICODE return WChar();#else return Char();#endif } //////////////////////////////////////////////////////////////////////// // ANSI/GBK 转 Unicode和UTF8的构造函数 CWCharToChar(const char* psrc, unsigned int nSrcType = EChar#if defined( _UTF8_ ) , unsigned int nDestType = EUtf8)#else , unsigned int nDestType = EWChar)#endif : m_cDest(NULL) , m_wcDest(NULL) , m_cUtf8(NULL) , m_nSrcType(nSrcType) { // 防止空指针 if( !psrc ) return; if( !*psrc ) // 如果是空字符串，也返回空字符串 { if( EChar == m_nSrcType ) m_cDest = (char*)psrc; if( EUtf8 == m_nSrcType ) m_cUtf8 = (char*)psrc; if( nDestType & EChar ) m_cDest = g_NULL; if( nDestType & EUtf8 ) m_cUtf8 = g_NULL; if( nDestType & EWChar ) m_wcDest = (wchar_t*)g_NULL; return; }#ifdef OS_WINDOWS if( EChar == m_nSrcType ) { m_cDest = (char*)psrc;#if defined( _UTF8_ ) int nLen = MultiByteToWideChar (CP_ACP, 0, m_cDest, -1, NULL, 0); m_wcDest = new wchar_t[nLen]; MultiByteToWideChar (CP_ACP, 0, m_cDest, -1, m_wcDest, nLen); nLen = WideCharToMultiByte(CP_UTF8, 0, m_wcDest, -1, NULL, 0, NULL, NULL); m_cUtf8 = new char[nLen + 1]; WideCharToMultiByte (CP_UTF8, 0, m_wcDest, -1, m_cUtf8, nLen, NULL,NULL);#else int nLen = MultiByteToWideChar (CP_ACP, 0, m_cDest, -1, NULL, 0); m_wcDest = new wchar_t[nLen]; MultiByteToWideChar (CP_ACP, 0, m_cDest, -1, m_wcDest, nLen);#endif } else if( EUtf8 == m_nSrcType ) { m_cUtf8 = (char*)psrc; int nLen = MultiByteToWideChar(CP_UTF8, 0, m_cUtf8, -1, NULL,0); m_wcDest = new wchar_t[nLen+1]; MultiByteToWideChar(CP_UTF8, 0, m_cUtf8, -1, m_wcDest, nLen); nLen = WideCharToMultiByte(CP_ACP, 0, m_wcDest, -1, NULL, 0, NULL, NULL); m_cDest = new char[nLen + 1]; WideCharToMultiByte(CP_ACP, 0, m_wcDest, -1, m_cDest, nLen, NULL,NULL); }#else // Linux if( EChar == m_nSrcType ) { m_cDest = (char*)psrc; if( nDestType & EUtf8 ) do_iconv_convert(psrc, &m_cUtf8, "GBK", "UTF-8"); if( nDestType & EWChar) do_iconv_convert(psrc, (char**)&m_wcDest, "GBK", "wchar_t"); } else if( EUtf8 == m_nSrcType ) { m_cUtf8 = (char*)psrc; if( nDestType & EChar) do_iconv_convert(psrc, &m_cDest, "UTF-8", "GBK"); if( nDestType & EWChar) do_iconv_convert(psrc, (char**)&m_wcDest, "UTF-8", "wchar_t"); }#endif } //////////////////////////////////////////////////////////////////////// // Unicode 转 ANSI/GBK和UTF8的构造函数 CWCharToChar(const wchar_t * psrc#if defined( _UTF8_ ) , unsigned int nDestType = EUtf8)#else , unsigned int nDestType = EChar)#endif : m_cDest(NULL) , m_wcDest(NULL) , m_cUtf8(NULL) , m_nSrcType(EWChar) { char * p = (char*)psrc; if( !p ) return ; m_wcDest = (wchar_t*)psrc; if( 0 == *p && 0 == *(p+1) ) // 如果是空字符串，也返回空字符串 { if( nDestType & EChar ) m_cDest = g_NULL; if( nDestType & EUtf8 ) m_cUtf8 = g_NULL; return; }#ifdef OS_WINDOWS // ANSI/GBK { int nLen = WideCharToMultiByte(CP_OEMCP,NULL, m_wcDest,-1,NULL,0,NULL,FALSE); m_cDest = new char[nLen]; WideCharToMultiByte (CP_OEMCP,NULL,m_wcDest,-1, m_cDest, nLen,NULL,FALSE); }#if defined( _UTF8_ ) { int nLen = WideCharToMultiByte(CP_UTF8, 0, m_wcDest, -1, NULL, 0, NULL, NULL); m_cUtf8 = new char[nLen + 1]; WideCharToMultiByte (CP_UTF8, 0, m_wcDest, -1, m_cUtf8, nLen, NULL,NULL); }#endif#else // Linux if( nDestType & EChar) do_iconv_convert((char*)psrc, &m_cDest, "wchar_t", "GBK"); if( nDestType & EUtf8) do_iconv_convert((char*)psrc, (char**)&m_cUtf8, "wchar_t", "UTF-8");#endif } //////////////////////////////////////////////////////////////////////// ~CWCharToChar() { if( EChar == m_nSrcType ) { if( m_wcDest && g_NULL != (char*)m_wcDest ) delete [] m_wcDest; if( m_cUtf8 && g_NULL != m_cUtf8 ) delete [] m_cUtf8; } else if( EWChar == m_nSrcType ) { if( m_cDest && g_NULL != m_cDest) delete [] m_cDest; if( m_cUtf8 && g_NULL != m_cUtf8) delete [] m_cUtf8; } else if( EUtf8 == m_nSrcType ) { if( m_cDest && g_NULL != m_cDest) delete [] m_cDest; if( m_wcDest && g_NULL != (char*)m_wcDest ) delete [] m_wcDest; } } //////////////////////////////////////////////////////////////////////// // Using iconv for Linux#ifndef OS_WINDOWS int do_iconv_convert(const char* pSrc, char**ppOut, const char* pszFromCode, const char* pszToCode) { iconv_t cd = iconv_open(pszToCode, pszFromCode); if(cd == (iconv_t)(-1)) { printf("iconv_open failed, errno: %d - %s\n", errno, strerror(errno)); *ppOut = g_NULL; // 为了防止给std::string赋值抛异常而导致程序终止 return -1; } iconv(cd, NULL, NULL, NULL, NULL); size_t nSLen = 0, nOLen = 0; if( m_nSrcType == EWChar )#ifdef OS_WINDOWS nSLen = wcslen((wchar_t*)pSrc) * 2; // 乘以2，转换成char的长度#else // Linux nSLen = wcslen((wchar_t*)pSrc) * 4; // for Unicode -> GBK/UTF8, Linux 乘以4#endif else nSLen = strlen(pSrc); if( 0 == strcmp( pszToCode, "wchar_t")) nOLen = nSLen * 4; // for GBK -> Unicode else nOLen = nSLen * 2; size_t nORawLen = nOLen; char* pOut = new char[nOLen+4]; char* pOutStart = pOut; char ** ppin = (char**)&pSrc; char ** ppout = &pOut;#ifdef _DEBUG printf("Convert: %s[%lu] -> %s[%lu] bytes\n", pszFromCode, nSLen, pszToCode, nOLen);#endif size_t ret = iconv(cd, (char**)ppin, &nSLen, (char**)ppout, &nOLen); if( 0 == ret ) // 转换完成成功 { iconv_close(cd); int nOutLen = nORawLen - nOLen; *(pOutStart + nOutLen) = 0; *(pOutStart + nOutLen + 1) = 0; // 给转换Unicode之用 *ppOut = pOutStart; return nOutLen; } else // 全部或部分错误 { printf("iconv failed, errno: %d - %s\n", errno, strerror(errno)); iconv_close(cd); delete [] pOutStart; *ppOut = g_NULL; // 为了防止给std::string赋值抛异常而导致程序终止 return -1; } }#endif static const char* GetNullStr(void){ return g_NULL; }};#endif //__CHAR_CONVERT_H__
