366 lines
8.3 KiB
C++
366 lines
8.3 KiB
C++
//#include "stdafx.h"
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#include "StringCodeConverter.h"
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#include <locale.h>
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#include <stdlib.h>
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//#include <stdio.h>
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#include <string>
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#include <cstring>
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using namespace std;
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size_t StringCodeConverter::mbslen( const char *pcszSource )
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{
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string strCurLocale = setlocale( LC_ALL, NULL );
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setlocale( LC_ALL, "chinese-simplified" );
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int mbl = 0;
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size_t cnt = 0;
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for (cnt = 0; *pcszSource; ++cnt)
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{
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mbl = mblen( pcszSource, MB_CUR_MAX );
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pcszSource += mbl;
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}
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setlocale( LC_ALL, strCurLocale.c_str() );
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return cnt;
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}
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wstring StringCodeConverter::mbs2unicode( const string &cstrSource )
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{
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string strCurLocale = setlocale( LC_ALL, NULL );
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setlocale( LC_ALL, "chinese-simplified" ); //改成中文环境,如果接受的参数不是中文字符串，得注意结果
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const char *pcszSource = cstrSource.c_str();
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size_t iCount = cstrSource.size() + 1;
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wchar_t *pwszBuffer = new wchar_t[ iCount ];
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wmemset( pwszBuffer, 0, iCount );
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size_t iConvertedCount = mbstowcs( pwszBuffer, pcszSource, iCount );
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if ( iConvertedCount == -1 )
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{
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delete [] pwszBuffer;
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throw string( "mbs2unicode参数有非中英文字符" );
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}
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wstring wstrDest( pwszBuffer );
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delete [] pwszBuffer;
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setlocale( LC_ALL, strCurLocale.c_str() );
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return wstrDest;
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}
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void StringCodeConverter::mbs2unicode(const string &strSource, wstring &wstrDest)
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{
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const char *pcszSource = strSource.c_str();
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string strCurLocale( setlocale(LC_ALL, NULL) );//先保存当前的locale设置
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setlocale( LC_ALL, "chs" );//设置为中文
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size_t iCharCount = strSource.size() + 1;//unicode字符串所需要的字符数
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wchar_t *pwszBuffer = new wchar_t[ iCharCount ];
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wmemset( pwszBuffer, 0, iCharCount );
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mbstowcs( pwszBuffer, pcszSource, iCharCount );
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setlocale( LC_ALL, strCurLocale.c_str() );//改回原来的locale设置
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wstrDest = pwszBuffer;
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delete [] pwszBuffer;
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}
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void StringCodeConverter::mbs2unicode( const char *pcszSource, wchar_t *pwszDest ) throw (string)
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{
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if ( pcszSource == NULL || pwszDest == NULL )
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{
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throw string( "参数指针为NULL" );
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}
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string strCurLocale = setlocale( LC_ALL, NULL );
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setlocale( LC_ALL, "chinese-simplified" ); //改成中文环境,如果接受的参数不是中文字符串，得注意结果
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size_t iCharCount = mbslen( pcszSource ) + 1;
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if ( iCharCount == -1 )
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{
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throw string( "源字符串的编码有非中英文字符" );
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}
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wmemset( pwszDest, 0, iCharCount );
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size_t iConvertedCount = mbstowcs( pwszDest, pcszSource, iCharCount );
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if ( iConvertedCount == -1 )
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{
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throw string( "源字符串的编码有非中英文字符" );
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}
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*( pwszDest + iConvertedCount ) = NULL;
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setlocale( LC_ALL, strCurLocale.c_str() );
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}
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void StringCodeConverter::mbs2utf8( const string &cstrSource, char *pszDest )
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{
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const char *pcszSource = cstrSource.c_str();
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string strCurLocale( setlocale( LC_ALL, NULL ) );
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setlocale( LC_ALL, "chinese-simplified" ); //改成中文环境,如果接受的参数不是中文字符串，得注意结果
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while ( *pcszSource != NULL )
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{
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if ( *pcszSource > 0 )
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{
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//英文字符,可以直接复制
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*pszDest = *pcszSource;
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pcszSource++;
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pszDest++;
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}
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else
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{
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//非ascii英文字符,先转换成unicode，再转换utf8
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int iLen = 0;
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wchar_t wUnicode = 0;
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char *pcUnicode = (char *)&wUnicode;
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//转换成unicode，返回mb字符的长度
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iLen = mbtowc( &wUnicode, pcszSource, MB_CUR_MAX );
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pszDest[0] = (0xE0 | ((pcUnicode[1] & 0xF0) >> 4));
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pszDest[1] = (0x80 | ((pcUnicode[1] & 0x0F) << 2)) + ((pcUnicode[0] & 0xC0) >> 6);
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pszDest[2] = (0x80 | (pcUnicode[0] & 0x3F));
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pszDest += 3;
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pcszSource += iLen;
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}
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}
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setlocale( LC_ALL, strCurLocale.c_str() );
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*pszDest = NULL;
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}
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string StringCodeConverter::unicode2mbs( const wstring &wstrSource )
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{
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string strCurLocale = setlocale( LC_ALL, NULL );
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setlocale( LC_ALL, "chinese-simplified" ); //改成中文环境,如果接受的参数不是中文字符串，得注意结果
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const wchar_t *pcwszSource = wstrSource.c_str();
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size_t iCount = wstrSource.size() * 2 + 1;
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char *pszBuffer = new char[ iCount ];
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memset( pszBuffer, 0, iCount );
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size_t iConvertedCount = wcstombs( pszBuffer, pcwszSource, iCount );
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if ( iConvertedCount == -1 )
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{
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throw string( "unicode2mbs源字符串的编码有非中英文字符" );
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}
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setlocale( LC_ALL, strCurLocale.c_str() );
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string strDest( pszBuffer );
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delete [] pszBuffer;
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return strDest;
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}
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void StringCodeConverter::unicode2mbs( const wstring &wstrSource, string &strDest )
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{
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string strCurLocale = setlocale( LC_ALL, NULL );
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setlocale( LC_ALL, "chs" );
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size_t iCount = wstrSource.size() + 1;
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char *pszBuffer = new char[ iCount ];
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const wchar_t *pcwszSource = wstrSource.c_str();
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memset( pszBuffer, 0, iCount );
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size_t iConvertedCount = wcstombs( pszBuffer, pcwszSource , iCount );
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if ( iConvertedCount == -1 )
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{
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delete [] pszBuffer;
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throw string( "unicode2mbs转换失败，字符串中有非中英文字符！" );
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}
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strDest = pszBuffer;
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delete [] pszBuffer;
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setlocale( LC_ALL, strCurLocale.c_str() );
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}
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void StringCodeConverter::unicode2mbs( const wchar_t *pcwszSource, char *pszDest )
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{
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if ( pcwszSource == NULL || pszDest == NULL )
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{
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throw string( "unicode2mbs函数，参数值为NULL" );
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}
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string strCurLocale = setlocale( LC_ALL, NULL );
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setlocale( LC_ALL, "chinese-simplified" ); //改成中文环境,如果接受的参数不是中文字符串，得注意结果
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size_t iCount = wcslen( pcwszSource )*2 + 1;
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memset( pszDest, 0, iCount );
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size_t iConvertedCount = wcstombs( pszDest, pcwszSource, iCount );
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if ( iConvertedCount == -1 )
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{
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throw string( "unicode2mbs转换失败，字符串中有非中英文字符！" );
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}
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setlocale( LC_ALL, strCurLocale.c_str() );
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}
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void StringCodeConverter::unicode2utf8( const wstring &cwstrSource, char *pszDest )
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{
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if ( pszDest == NULL )
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{
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throw string( "参数为NULL" );
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}
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const wchar_t *pcwszSource = cwstrSource.c_str();
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while ( *pcwszSource != NULL )
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{
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unsigned short int iUnicode = *pcwszSource;
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if ( iUnicode < 128 )
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{
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//小于128是英文字符，不需要转换
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*pszDest = (char)iUnicode;
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pszDest++;
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pcwszSource++;
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}
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else
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{
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//大于128是mbs字符，需要转换
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const char *pcszUnicode = (const char *)pcwszSource;
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pszDest[0] = (0xE0 | ((pcszUnicode[1] & 0xF0) >> 4 ));
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pszDest[1] = (0x80 | ((pcszUnicode[1] & 0x0F) << 2)) + ((pcszUnicode[0] & 0xC0) >> 6);
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pszDest[2] = (0x80 | (pcszUnicode[0] & 0x3F));
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pszDest = pszDest + 3;
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pcwszSource++;
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}
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}
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*pszDest = NULL;//末尾的NULL字符
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}
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string StringCodeConverter::utf8tombs( const char *pcszSource )
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{
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if ( pcszSource == NULL )
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{
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throw string( "参数为NULL" );
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}
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string strCurLocale( setlocale( LC_ALL, NULL ) );
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setlocale( LC_ALL, "chinese-simplified" ); //改成中文环境,如果接受的参数不是中文字符串，得注意结果
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char *pszDest = new char[ strlen( pcszSource ) ];
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char *pszBuffer = pszDest;
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while ( *pcszSource != 0 )
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{
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if ( *pcszSource > 0 )
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{
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//是ASCII字符
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*pszDest = *pcszSource;
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pszDest++;
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pcszSource++;
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}
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else
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{
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wchar_t wUnicode = 0;
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char *pcUnicode = (char *)&wUnicode;
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pcUnicode[1] = ((pcszSource[0] & 0x0F) << 4) + ((pcszSource[1] >> 2) & 0x0F);
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pcUnicode[0] = ((pcszSource[1] & 0x03) << 6) + (pcszSource[2] & 0x3F);
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wchar_t wMcb;
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char *pcMbs = (char *)&wMcb;
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int iLen = 0;
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iLen = wctomb( pcMbs, wUnicode );
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if ( iLen == 1 )
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{
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*pszDest = *pcMbs;
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}
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else
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{
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pszDest[0] = pcMbs[0];
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pszDest[1] = pcMbs[1];
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}
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pszDest += iLen;
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pcszSource += 3;
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}
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}
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*pszDest = NULL;
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setlocale( LC_ALL, strCurLocale.c_str() );
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strCurLocale = pszBuffer; //废物利用
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return strCurLocale;
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}
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wstring StringCodeConverter::utf8tounicode( const char *pcszSource )
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{
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if ( pcszSource == NULL )
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{
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throw string( "参数为NULL" );
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}
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string strCurLocale = setlocale( LC_ALL, NULL );
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setlocale( LC_ALL, "chinese-simplified" ); //改成中文环境,如果接受的参数不是中文字符串，得注意结果
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wchar_t *pwszBuffer = new wchar_t[ strlen( pcszSource ) ];
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wchar_t *pwszDest = pwszBuffer;
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while ( *pcszSource != NULL )
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{
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if ( *pcszSource > 0 )
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{
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//是ASCII字符
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wchar_t wUnicode;
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mbtowc( &wUnicode, pcszSource, 1 );
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*pwszDest = wUnicode;
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pwszDest++;
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pcszSource++;
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}
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else
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{
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//中文字符，3个字节
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wchar_t wUnicode;
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char *pcUnicode = (char *)&wUnicode;
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pcUnicode[1] = ((pcszSource[0] & 0x0F) << 4) + ((pcszSource[1] >> 2) & 0x0F);
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pcUnicode[0] = ((pcszSource[1] & 0x03) << 6) + (pcszSource[2] & 0x3F);
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*pwszDest = wUnicode;
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pwszDest++;
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pcszSource += 3;
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}
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}
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setlocale( LC_ALL, strCurLocale.c_str() );
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*pwszDest = NULL;//末尾空字符
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wstring wstrDest( pwszBuffer );
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return wstrDest;
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} |