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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <grpc/support/port_platform.h>
#ifdef GPR_WINDOWS_TMPFILE
#include <io.h>
#include <stdio.h>
#include <string.h>
#include <tchar.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include "src/core/lib/gpr/string_windows.h"
#include "src/core/lib/gpr/tmpfile.h"
FILE* gpr_tmpfile(const char* prefix, char** tmp_filename_out) {
FILE* result = NULL;
LPTSTR template_string = NULL;
TCHAR tmp_path[MAX_PATH];
TCHAR tmp_filename[MAX_PATH];
DWORD status;
UINT success;
if (tmp_filename_out != NULL) *tmp_filename_out = NULL;
/* Convert our prefix to TCHAR. */
template_string = gpr_char_to_tchar(prefix);
GPR_ASSERT(template_string);
/* Get the path to the best temporary folder available. */
status = GetTempPath(MAX_PATH, tmp_path);
if (status == 0 || status > MAX_PATH) goto end;
/* Generate a unique filename with our template + temporary path. */
success = GetTempFileName(tmp_path, template_string, 0, tmp_filename);
if (!success) goto end;
/* Open a file there. */
if (_tfopen_s(&result, tmp_filename, TEXT("wb+")) != 0) goto end;
end:
if (result && tmp_filename_out) {
*tmp_filename_out = gpr_tchar_to_char(tmp_filename);
}
gpr_free(template_string);
return result;
}
#endif /* GPR_WINDOWS_TMPFILE */
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