C++ String 字符串系列转换
// 宽字符转UTF8 ,处理字符乱码
std::string EncodeUtf8(std::wstring in)
{
std::string s(in.length() * 3 + 1, ' ');
size_t len = ::WideCharToMultiByte(CP_UTF8, 0,
in.c_str(), in.length(),
&s[0], s.length(),
NULL, NULL);
s.resize(len);
return s;
}
// UTF8 转宽字符
std::wstring DecodeUtf8(string in)
{
wstring s(in.length(), (' ')); //必需得添加"tchar.h"头文件
size_t len = ::MultiByteToWideChar(CP_UTF8, 0,
in.c_str(), in.length(),
&s[0], s.length());
s.resize(len);
return s;
}
//wstring转string
std::string ws2s(const std::wstring& ws)
{
std::string curLocale = setlocale(LC_ALL, NULL); // curLocale = "C";
setlocale(LC_ALL, "chs");
const wchar_t* _Source = ws.c_str();
size_t _Dsize = 2 * ws.size() + 1;
char *_Dest = new char[_Dsize];
memset(_Dest, 0, _Dsize);
wcstombs(_Dest, _Source, _Dsize);
std::string result = _Dest;
delete[]_Dest;
setlocale(LC_ALL, curLocale.c_str());
return result;
}
//string 转wstring
std::wstring s2ws(const std::string& s)
{
setlocale(LC_ALL, "chs");
const char* _Source = s.c_str();
size_t _Dsize = s.size() + 1;
wchar_t *_Dest = new wchar_t[_Dsize];
wmemset(_Dest, 0, _Dsize);
mbstowcs(_Dest, _Source, _Dsize);
std::wstring result = _Dest;
delete[]_Dest;
setlocale(LC_ALL, "C");
return result;
}
// 字节数据转换为可打印字符串
// 如：{0xC8, 0x32, 0x9B, 0xFD, 0x0E, 0x01} --> "C8329BFD0E01"
// 输入: pSrc - 源数据指针
// nSrcLength - 源数据长度
// 输出: pDst - 目标字符串指针
// 返回: 目标字符串长度
int gsmBytes2String(const unsigned char* pSrc, char* pDst, int nSrcLength)
{
const char tab[]="0123456789ABCDEF"; // 0x0-0xf的字符查找表
for (int i = 0; i < nSrcLength; i++) { *pDst++ = tab[*pSrc >> 4]; // 输出高4位 *pDst++ = tab[*pSrc & 0x0f]; // 输出低4位 pSrc++; } // 输出字符串加个结束符 *pDst = '\0'; // 返回目标字符串长度 return (nSrcLength * 2);
}
#include
#include
int gstringtobytes(std::string strsrc, std::vector& vec)
{
using namespace std;
ASSERT(strsrc.empty() != false);
std::istringstream ism(strsrc);
ism >> hex;
istream_iterator it(ism), iend;
std::vector vec;
//transform(first,last,result,op);
transform(it, iend, back_inserter(vec), [](unsigned u) {
return (BYTE)u; });
return vec.size();
}
// 可打印字符串转换为字节数据
// 如："C8329BFD0E01" --> {0xC8, 0x32, 0x9B, 0xFD, 0x0E, 0x01}
// 输入: pSrc - 源字符串指针
// nSrcLength - 源字符串长度
// 输出: pDst - 目标数据指针
// 返回: 目标数据长度
int gsmString2Bytes(const char* pSrc, unsigned char* pDst, int nSrcLength)
{
for (int i = 0; i < nSrcLength; i += 2)
{
// 输出高4位
if ((*pSrc >= '0') && (*pSrc
{
*pDst = (*pSrc - '0')
}
else
{
*pDst = (*pSrc - 'A' + 10)
}
pSrc++; // 输出低4位 if ((*pSrc>='0') && (*pSrc<='9')) { *pDst |= *pSrc - '0'; } else { *pDst |= *pSrc - 'A' + 10; } pSrc++; pDst++; } // 返回目标数据长度 return (nSrcLength / 2);
}
int main(int argc, char* argv[])
{
char intSprint[255] = "C8329BFD0E0199999999";
unsigned char outBytes[255] = {0};
int szLength = 0;
int byLength = 0;
byLength = gsmString2Bytes(intSprint,outBytes,strlen(intSprint)); szLength = gsmBytes2String(outBytes,intSprint,strlen(intSprint)/2); printf("%s\n",intSprint); return 0;
}