67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
// Copyright 2015 The Shaderc Authors. 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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#include "file_includer.h"
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#include <mutex>
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#include <utility>
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#include "libshaderc_util/io_shaderc.h"
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namespace glslc {
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shaderc_include_result* MakeErrorIncludeResult(const char* message) {
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return new shaderc_include_result{"", 0, message, strlen(message)};
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}
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FileIncluder::~FileIncluder() = default;
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shaderc_include_result* FileIncluder::GetInclude(
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const char* requested_source, shaderc_include_type include_type,
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const char* requesting_source, size_t) {
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const std::string full_path =
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(include_type == shaderc_include_type_relative)
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? file_finder_.FindRelativeReadableFilepath(requesting_source,
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requested_source)
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: file_finder_.FindReadableFilepath(requested_source);
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if (full_path.empty())
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return MakeErrorIncludeResult("Cannot find or open include file.");
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// In principle, several threads could be resolving includes at the same
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// time. Protect the included_files.
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// Read the file and save its full path and contents into stable addresses.
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FileInfo* new_file_info = new FileInfo{full_path, {}};
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if (!shaderc_util::ReadFile(full_path, &(new_file_info->contents))) {
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return MakeErrorIncludeResult("Cannot read file");
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}
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included_files_.insert(full_path);
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return new shaderc_include_result{
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new_file_info->full_path.data(), new_file_info->full_path.length(),
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new_file_info->contents.data(), new_file_info->contents.size(),
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new_file_info};
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}
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void FileIncluder::ReleaseInclude(shaderc_include_result* include_result) {
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FileInfo* info = static_cast<FileInfo*>(include_result->user_data);
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delete info;
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delete include_result;
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}
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} // namespace glslc
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