blob: 486c2ea9c8ea275880350a2ee7f53b2cd1a53621 [file] [log] [blame]
// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// GEN_BUILD:CONDITION(tint_build_is_win)
#include "src/tint/utils/file/tmpfile.h"
#include <stdio.h>
#include <cstdio>
namespace tint {
namespace {
std::string TmpFilePath(const std::string& ext) {
char name[L_tmpnam];
// As we're adding an extension, to ensure the file is really unique, try
// creating it, failing if it already exists.
while (tmpnam_s(name, L_tmpnam - 1) == 0) {
std::string name_with_ext = std::string(name) + ext;
FILE* f = nullptr;
// The "x" arg forces the function to fail if the file already exists.
fopen_s(&f, name_with_ext.c_str(), "wbx");
if (f) {
fclose(f);
return name_with_ext;
}
}
return {};
}
} // namespace
TmpFile::TmpFile(std::string ext) : path_(TmpFilePath(ext)) {}
TmpFile::~TmpFile() {
if (!path_.empty()) {
remove(path_.c_str());
}
}
bool TmpFile::Append(const void* data, size_t size) const {
FILE* file = nullptr;
if (fopen_s(&file, path_.c_str(), "ab") != 0) {
return false;
}
fwrite(data, size, 1, file);
fclose(file);
return true;
}
} // namespace tint