MrW*_*ite 5 c++ winapi createprocess utf-8
我无法让它工作,所以我从CreateProcess()into获得 UTF-8 输出wstring。
目前我正在运行此方法来执行此操作,但没有 UTF-8 输出:
HANDLE g_hChildStd_OUT_Rd = NULL;
HANDLE g_hChildStd_OUT_Wr = NULL;
HANDLE g_hChildStd_ERR_Rd = NULL;
HANDLE g_hChildStd_ERR_Wr = NULL;
PROCESS_INFORMATION CreateChildProcess(void);
void ReadFromPipe(PROCESS_INFORMATION);
string run(char *command){
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.bInheritHandle = TRUE;
sa.lpSecurityDescriptor = NULL;
if ( ! CreatePipe(&g_hChildStd_ERR_Rd, &g_hChildStd_ERR_Wr, &sa, 0) ) {
exit(1);
}
if ( ! SetHandleInformation(g_hChildStd_ERR_Rd, HANDLE_FLAG_INHERIT, 0) ){
exit(1);
}
if ( ! CreatePipe(&g_hChildStd_OUT_Rd, &g_hChildStd_OUT_Wr, &sa, 0) ) {
exit(1);
}
if ( ! SetHandleInformation(g_hChildStd_OUT_Rd, HANDLE_FLAG_INHERIT, 0) ){
exit(1);
}
char *szCmdline=command;
PROCESS_INFORMATION piProcInfo;
STARTUPINFO siStartInfo;
bool bSuccess = FALSE;
ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
siStartInfo.cb = sizeof(STARTUPINFO);
siStartInfo.hStdError = g_hChildStd_ERR_Wr;
siStartInfo.hStdOutput = g_hChildStd_OUT_Wr;
siStartInfo.dwFlags |= STARTF_USESTDHANDLES;
bSuccess = CreateProcess(NULL,
szCmdline, // command line
NULL, // process security attributes
NULL, // primary thread security attributes
TRUE, // handles are inherited
CREATE_NO_WINDOW, // creation flags
NULL, // use parent's environment
NULL, // use parent's current directory
&siStartInfo, // STARTUPINFO pointer
&piProcInfo); // receives PROCESS_INFORMATION
CloseHandle(g_hChildStd_ERR_Wr);
CloseHandle(g_hChildStd_OUT_Wr);
if ( ! bSuccess ) {
exit(1);
}
DWORD dwRead;
CHAR chBuf[BUFSIZE];
bool bSuccess2 = FALSE;
std::string out = "", err = "";
for (;;) {
bSuccess2=ReadFile( g_hChildStd_OUT_Rd, chBuf, BUFSIZE, &dwRead, NULL);
if( ! bSuccess2 || dwRead == 0 ) break;
std::string s(chBuf, dwRead);
out += s;
}
dwRead = 0;
for (;;) {
bSuccess2=ReadFile( g_hChildStd_ERR_Rd, chBuf, BUFSIZE, &dwRead, NULL);
if( ! bSuccess2 || dwRead == 0 ) break;
std::string s(chBuf, dwRead);
err += s;
}
return out;
}
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我尝试了几件事,但没有成功地使其发挥作用。
任何帮助表示赞赏!
命令的输出是字节流。所以你将它作为字节流读取。由两个程序就使用的编码达成一致。
例如:
如果执行 .NET (C#/VB.NET) 控制台应用程序,该应用程序可以使用Console.OutputEncoding, 来设置该Console.Write[Line]方法将使用的编码。
Console.OutputEncoding = Text.Encoding.UTF8;
Run Code Online (Sandbox Code Playgroud)同样,PowerShell 脚本可以使用, 来设置 cmdlet或cmdlet 将使用的[Console]::OutputEncoding编码。Write-OutputWrite-Host
[Console]::OutputEncoding = [Text.Encoding]::UTF8
Run Code Online (Sandbox Code Playgroud)或cmd.exe批处理文件可以使用chcp命令。
chcp 65001
Run Code Online (Sandbox Code Playgroud)如果Win32 应用SetConsoleOutputCP程序WriteConsole使用. 如果应用程序正在使用WriteFile,它只需要写入已根据需要编码的字节(例如使用WideCharToMultiByte)。
SetConsoleOutputCP(CP_UTF8);
Run Code Online (Sandbox Code Playgroud)然后,当您读取应用程序输出时,您可以使用约定的编码对字节流进行解码。例如使用MultiByteToWideChar函数.