forked from mindspore-Ecosystem/mindspore
80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
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/**
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* Copyright 2019 Huawei Technologies Co., Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "common/file_utils.h"
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#include <climits>
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namespace mindspore {
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namespace predict {
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char *ReadFile(const char *file, size_t *size) {
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if (file == nullptr) {
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MS_LOGE("file is nullptr");
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return nullptr;
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}
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MS_ASSERT(size != nullptr);
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std::ifstream ifs(RealPath(file));
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if (!ifs.good()) {
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MS_LOGE("file: %s is not exist", file);
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return nullptr;
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}
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if (!ifs.is_open()) {
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MS_LOGE("file: %s open failed", file);
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return nullptr;
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}
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ifs.seekg(0, std::ios::end);
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*size = ifs.tellg();
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std::unique_ptr<char> buf(new (std::nothrow) char[*size]);
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if (buf == nullptr) {
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MS_LOGE("malloc buf failed, file:%s", file);
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ifs.close();
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return nullptr;
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}
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ifs.seekg(0, std::ios::beg);
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ifs.read(buf.get(), *size);
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ifs.close();
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return buf.release();
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}
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std::string RealPath(const char *path) {
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if (path == nullptr) {
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MS_LOGE("path is nullptr");
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return "";
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}
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if ((strlen(path)) >= PATH_MAX) {
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MS_LOGE("path is too long");
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return "";
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}
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std::shared_ptr<char> resolvedPath(new (std::nothrow) char[PATH_MAX]{0});
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if (resolvedPath == nullptr) {
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MS_LOGE("new resolvedPath failed");
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return "";
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}
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auto ret = realpath(path, resolvedPath.get());
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if (ret == nullptr) {
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MS_LOGE("realpath failed");
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return "";
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}
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return resolvedPath.get();
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}
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} // namespace predict
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} // namespace mindspore
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