友
我是c ++的初学者,我使用vc 6.0编写utf-8编码的文件。
我正在使用fwprintf函数。但该文件采用ANSI编码。任何人都可以告诉我如何使用fwprintf()在utf-8中保存文件。
这是我的代码,
#include "stdafx.h"
#include "wchar.h"
#include "windows.h"
int main(int argc, char* argv[])
{
FILE *file;
file = fopen ("abc.txt","w");
fwprintf(file, L"This is my utf-8 encoded file");
fclose(file);
WinExec("\"C:\\Program Files\\EditPlus 3\\editplus.exe\abc.txt", SW_SHOWNORMAL);
return 0;
}
答案 0 :(得分:3)
fopen()
不支持VC6中的编码,因此您必须在代码中手动管理编码,例如:
#include "stdafx.h"
#include "wchar.h"
#include "windows.h"
bool writeUtf8StrToFile(FILE *file, const wchar_t *str)
{
if (!file) return false;
int wlen = lstrlenW(str);
if (wlen == 0) return true;
int utf8len = WideCharToMultiByte(CP_UTF8, 0, str, wlen, NULL, 0, NULL, NULL);
if (utf8len == 0) return false;
char *utf8 = (char*) malloc(utf8len);
if (!utf8) return false;
utf8len = WideCharToMultiByte(CP_UTF8, 0, str, wlen, utf8, utf8len, NULL, NULL);
if (utf8len == 0) return false;
fwrite(utf8, 1, utf8len, file);
free(utf8);
return true;
}
int main(int argc, char* argv[])
{
FILE *file = fopen ("abc.txt", "wb");
if (file)
{
writeUtf8StrToFile(file, L"This is my utf-8 encoded file");
fclose(file);
WinExec("\"C:\\Program Files\\EditPlus 3\\editplus.exe\" abc.txt", SW_SHOWNORMAL);
}
return 0;
}
或者(因为你说你使用的是C ++而不是C,上面的代码是):
#include "stdafx.h"
#include "wchar.h"
#include "windows.h"
#include <fstream>
#include <string>
bool writeUtf8StrToFile(std::ofstream &file, const std::wstring &str)
{
{
if (!file.is_open()) return false;
if (str.empty()) return true;
int utf8len = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), str.length(), NULL, 0, NULL, NULL);
if (utf8len == 0) return false;
std::string utf8(utf8len, '\0');
WideCharToMultiByte(CP_UTF8, 0, str.c_str(), str.length(), &utf8[0], utf8len, NULL, NULL);
file << utf8;
return true;
}
int main(int argc, char* argv[])
{
std::ofstream file("abc.txt", std::ios::out | std::ios::binary);
if (file.is_open())
{
writeUtf8StrToFile(file, L"This is my utf-8 encoded file");
file.close();
WinExec("\"C:\\Program Files\\EditPlus 3\\editplus.exe\" abc.txt", SW_SHOWNORMAL);
}
return 0;
}
或者,使用this article中的UTF-8库,例如:
#include "stdafx.h"
#include "wchar.h"
#include "windows.h"
#include <fstream>
#include <string>
#include <iterator>
#include "utf8.h"
int main(int argc, char* argv[])
{
std::ofstream file("abc.txt", std::ios::out | std::ios::binary);
if (file.is_open())
{
std::wstring utf16str = L"This is my utf-8 encoded file";
std::string utf8str;
utf8::utf16to8(utf16str.begin(), utf16str.end(), std::back_inserter(utf8str));
file << utf8str;
file.close();
WinExec("\"C:\\Program Files\\EditPlus 3\\editplus.exe\" abc.txt", SW_SHOWNORMAL);
}
return 0;
}
或者,使用this article的UTF-8流转换器,例如:
#include "stdafx.h"
#include "wchar.h"
#include "windows.h"
#include <fstream>
#include "stxutif.h"
int main(int argc, char* argv[])
{
std::wofstream fs("abc.txt", std::ios::out);
if (file.is_open())
{
std::locale utf8_locale(std::locale(), new utf8cvt<false>);
file.imbue(utf8_locale);
file << L"This is my utf-8 encoded file";
file.close();
WinExec("\"C:\\Program Files\\EditPlus 3\\editplus.exe\" abc.txt", SW_SHOWNORMAL);
}
return 0;
}
答案 1 :(得分:1)
如果您的编译器允许,您可以在"w"
来电中将"w,ccs=UTF-8"
替换为fopen
。