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Merge pull request #60920 from timothyqiu/execute-cp

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Rémi Verschelde 2022-05-10 17:45:21 +02:00 committed by GitHub
commit 0841f72c38
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1 changed files with 55 additions and 7 deletions
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62
platform/windows/os_windows.cpp
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@ -387,6 +387,31 @@ String OS_Windows::_quote_command_line_argument(const String &p_text) const {
return p_text;
}
static void _append_to_pipe(char *p_bytes, int p_size, String *r_pipe, Mutex *p_pipe_mutex) {
// Try to convert from default ANSI code page to Unicode.
LocalVector<wchar_t> wchars;
int total_wchars = MultiByteToWideChar(CP_ACP, 0, p_bytes, p_size, nullptr, 0);
if (total_wchars > 0) {
wchars.resize(total_wchars);
if (MultiByteToWideChar(CP_ACP, 0, p_bytes, p_size, wchars.ptr(), total_wchars) == 0) {
wchars.clear();
}
}
if (p_pipe_mutex) {
p_pipe_mutex->lock();
}
if (wchars.is_empty()) {
// Let's hope it's compatible with UTF-8.
(*r_pipe) += String::utf8(p_bytes, p_size);
} else {
(*r_pipe) += String(wchars.ptr(), total_wchars);
}
if (p_pipe_mutex) {
p_pipe_mutex->unlock();
}
}
Error OS_Windows::execute(const String &p_path, const List<String> &p_arguments, String *r_pipe, int *r_exitcode, bool read_stderr, Mutex *p_pipe_mutex, bool p_open_console) {
String path = p_path.replace("/", "\\");
String command = _quote_command_line_argument(path);
@ -435,21 +460,44 @@ Error OS_Windows::execute(const String &p_path, const List<String> &p_arguments,
if (r_pipe) {
CloseHandle(pipe[1]); // Close pipe write handle (only child process is writing).
char buf[4096];
LocalVector<char> bytes;
int bytes_in_buffer = 0;
const int CHUNK_SIZE = 4096;
DWORD read = 0;
for (;;) { // Read StdOut and StdErr from pipe.
bool success = ReadFile(pipe[0], buf, 4096, &read, NULL);
bytes.resize(bytes_in_buffer + CHUNK_SIZE);
const bool success = ReadFile(pipe[0], bytes.ptr() + bytes_in_buffer, CHUNK_SIZE, &read, NULL);
if (!success || read == 0) {
break;
}
if (p_pipe_mutex) {
p_pipe_mutex->lock();
// Assume that all possible encodings are ASCII-compatible.
// Break at newline to allow receiving long output in portions.
int newline_index = -1;
for (int i = read - 1; i >= 0; i--) {
if (bytes[bytes_in_buffer + i] == '\n') {
newline_index = i;
break;
}
}
(*r_pipe) += String::utf8(buf, read);
if (p_pipe_mutex) {
p_pipe_mutex->unlock();
if (newline_index == -1) {
bytes_in_buffer += read;
continue;
}
const int bytes_to_convert = bytes_in_buffer + (newline_index + 1);
_append_to_pipe(bytes.ptr(), bytes_to_convert, r_pipe, p_pipe_mutex);
bytes_in_buffer = read - (newline_index + 1);
memmove(bytes.ptr(), bytes.ptr() + bytes_to_convert, bytes_in_buffer);
}
if (bytes_in_buffer > 0) {
_append_to_pipe(bytes.ptr(), bytes_in_buffer, r_pipe, p_pipe_mutex);
}
CloseHandle(pipe[0]); // Close pipe read handle.
} else {
WaitForSingleObject(pi.pi.hProcess, INFINITE);