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Use new UTF8-GBK converter.

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Kirigaya Kazuto 2017-05-23 22:31:57 +08:00
parent 79b97736b4
commit f2d60629a0
1 changed files with 42 additions and 83 deletions
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125
MiniEngine_Windows.cpp
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@ -3,118 +3,77 @@ using namespace std;
#include <windows.h>
//GBK编码转换到UTF8编码
int _GBKToUTF8(unsigned char * lpGBKStr,unsigned char * lpUTF8Str,int nUTF8StrLen)
void _utf8_to_gb(const char* src, char* dst, int len)
{
wchar_t * lpUnicodeStr = NULL;
int nRetLen = 0;
if(!lpGBKStr) //如果GBK字符串为NULL则出错退出
return 0;
nRetLen = MultiByteToWideChar(CP_ACP,0,(char *)lpGBKStr,-1,NULL,0); //获取转换到Unicode编码后所需要的字符空间长度
lpUnicodeStr = new WCHAR[nRetLen + 1]; //为Unicode字符串空间
nRetLen = ::MultiByteToWideChar(CP_ACP,0,(char *)lpGBKStr,-1,lpUnicodeStr,nRetLen); //转换到Unicode编码
if(!nRetLen) //转换失败则出错退出
return 0;
nRetLen = ::WideCharToMultiByte(CP_UTF8,0,lpUnicodeStr,-1,NULL,0,NULL,0); //获取转换到UTF8编码后所需要的字符空间长度
if(!lpUTF8Str) //输出缓冲区为空则返回转换后需要的空间大小
{
if(lpUnicodeStr)
delete []lpUnicodeStr;
return nRetLen;
int ret = 0;
WCHAR* strA;
int i= MultiByteToWideChar(CP_UTF8, 0, src, -1, NULL, 0);
if (i <= 0) {
printf("ERROR.");
return;
}
strA = (WCHAR*)malloc(i * 2);
MultiByteToWideChar(CP_UTF8, 0, src, -1, strA, i);
i = WideCharToMultiByte(CP_ACP, 0, strA, -1, NULL, 0, NULL, NULL);
if (len >= i) {
ret = WideCharToMultiByte(CP_ACP, 0, strA, -1, dst, i, NULL, NULL);
dst[i] = 0;
}
if (ret <= 0) {
free(strA);
return;
}
if(nUTF8StrLen < nRetLen) //如果输出缓冲区长度不够则退出
{
if(lpUnicodeStr)
delete []lpUnicodeStr;
return 0;
}
nRetLen = ::WideCharToMultiByte(CP_UTF8,0,lpUnicodeStr,-1,(char *)lpUTF8Str,nUTF8StrLen,NULL,NULL); //转换到UTF8编码
if(lpUnicodeStr)
delete []lpUnicodeStr;
return nRetLen;
free( strA );
}
// UTF8编码转换到GBK编码
int _UTF8ToGBK(unsigned char * lpUTF8Str,unsigned char * lpGBKStr,int nGBKStrLen)
void _gb_to_utf8(const char* src, char* dst, int len)
{
wchar_t * lpUnicodeStr = NULL;
int nRetLen = 0;
if(!lpUTF8Str) //如果UTF8字符串为NULL则出错退出
return 0;
nRetLen = ::MultiByteToWideChar(CP_UTF8,0,(char *)lpUTF8Str,-1,NULL,0); //获取转换到Unicode编码后所需要的字符空间长度
lpUnicodeStr = new WCHAR[nRetLen + 1]; //为Unicode字符串空间
nRetLen = ::MultiByteToWideChar(CP_UTF8,0,(char *)lpUTF8Str,-1,lpUnicodeStr,nRetLen); //转换到Unicode编码
if(!nRetLen) //转换失败则出错退出
return 0;
nRetLen = ::WideCharToMultiByte(CP_ACP,0,lpUnicodeStr,-1,NULL,0,NULL,NULL); //获取转换到GBK编码后所需要的字符空间长度
if(!lpGBKStr) //输出缓冲区为空则返回转换后需要的空间大小
{
if(lpUnicodeStr)
delete []lpUnicodeStr;
return nRetLen;
int ret = 0;
WCHAR* strA;
int i= MultiByteToWideChar(CP_ACP, 0, src, -1, NULL, 0);
if (i <= 0) {
printf("ERROR.");
return;
}
strA = (WCHAR*)malloc(i * 2);
MultiByteToWideChar(CP_ACP, 0, src, -1, strA, i);
i = WideCharToMultiByte(CP_UTF8, 0, strA, -1, NULL, 0, NULL, NULL);
if (len >= i) {
ret = WideCharToMultiByte(CP_UTF8, 0, strA, -1, dst, i, NULL, NULL);
dst[i] = 0;
}
if(nGBKStrLen < nRetLen) //如果输出缓冲区长度不够则退出
{
if(lpUnicodeStr)
delete []lpUnicodeStr;
return 0;
if (ret <= 0) {
free(strA);
return;
}
nRetLen = ::WideCharToMultiByte(CP_ACP,0,lpUnicodeStr,-1,(char *)lpGBKStr,nRetLen,NULL,NULL); //转换到GBK编码
if(lpUnicodeStr)
delete []lpUnicodeStr;
return nRetLen;
free(strA);
}
string UTF8ToGBK(string UTF8String)
{
int sz=UTF8String.size()*2/3+256;
auto utf8str=new unsigned char[sz];
memset(utf8str,0,sz);
memcpy(utf8str,UTF8String.c_str(),UTF8String.size());
auto gbkstr=new unsigned char[sz];
auto gbkstr=new char[sz];
memset(gbkstr,0,sz);
_UTF8ToGBK(utf8str,gbkstr,sz);
_utf8_to_gb(UTF8String.c_str(),gbkstr,sz);
string s((char*)gbkstr);
delete[] gbkstr;
delete[] utf8str;
return s;
}
string GBKToUTF8(string GBKString)
{
int sz=GBKString.size()*3/2+32;
auto gbkstr=new unsigned char[sz];
memset(gbkstr,0,sz);
memcpy(gbkstr,GBKString.c_str(),GBKString.size());
auto utf8str=new unsigned char[sz];
auto utf8str=new char[sz];
memset(utf8str,0,sz);
_GBKToUTF8(gbkstr,utf8str,sz);
_gb_to_utf8(GBKString.c_str(),utf8str,sz);
string s((char*)utf8str);
string s(utf8str);
delete[] gbkstr;
delete[] utf8str;
return s;
}