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a66f9e769b
* The asserts replaced by FLATBUFFERS_ASSERT. Several asserts have converted to static_asserts. * Regenerate header monster generate_code.sh
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
/*
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* Copyright 2016 Google Inc. All rights reserved.
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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 "flatbuffers/util.h"
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namespace flatbuffers {
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bool FileExistsRaw(const char *name) {
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std::ifstream ifs(name);
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return ifs.good();
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}
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bool LoadFileRaw(const char *name, bool binary, std::string *buf) {
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if (DirExists(name)) return false;
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std::ifstream ifs(name, binary ? std::ifstream::binary : std::ifstream::in);
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if (!ifs.is_open()) return false;
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if (binary) {
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// The fastest way to read a file into a string.
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ifs.seekg(0, std::ios::end);
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auto size = ifs.tellg();
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(*buf).resize(static_cast<size_t>(size));
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ifs.seekg(0, std::ios::beg);
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ifs.read(&(*buf)[0], (*buf).size());
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} else {
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// This is slower, but works correctly on all platforms for text files.
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std::ostringstream oss;
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oss << ifs.rdbuf();
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*buf = oss.str();
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}
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return !ifs.bad();
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}
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static LoadFileFunction g_load_file_function = LoadFileRaw;
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static FileExistsFunction g_file_exists_function = FileExistsRaw;
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bool LoadFile(const char *name, bool binary, std::string *buf) {
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FLATBUFFERS_ASSERT(g_load_file_function);
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return g_load_file_function(name, binary, buf);
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}
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bool FileExists(const char *name) {
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FLATBUFFERS_ASSERT(g_file_exists_function);
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return g_file_exists_function(name);
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}
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bool DirExists(const char *name) {
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// clang-format off
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#ifdef _WIN32
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#define flatbuffers_stat _stat
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#define FLATBUFFERS_S_IFDIR _S_IFDIR
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#else
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#define flatbuffers_stat stat
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#define FLATBUFFERS_S_IFDIR S_IFDIR
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#endif
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// clang-format on
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struct flatbuffers_stat file_info;
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if (flatbuffers_stat(name, &file_info) != 0) return false;
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return (file_info.st_mode & FLATBUFFERS_S_IFDIR) != 0;
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}
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LoadFileFunction SetLoadFileFunction(LoadFileFunction load_file_function) {
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LoadFileFunction previous_function = g_load_file_function;
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g_load_file_function = load_file_function ? load_file_function : LoadFileRaw;
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return previous_function;
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}
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FileExistsFunction SetFileExistsFunction(
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FileExistsFunction file_exists_function) {
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FileExistsFunction previous_function = g_file_exists_function;
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g_file_exists_function =
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file_exists_function ? file_exists_function : FileExistsRaw;
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return previous_function;
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}
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} // namespace flatbuffers
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