1dae41c607
- return original source when on an unsupported platform - check clang-format is available and return original source.
93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*
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* Copyright (C) 2025 The Android Open Source Project
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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 "SourceFormatter.h"
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#include <utils/Log.h>
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#include <cstdio>
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#include <sstream>
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namespace filament::matdbg {
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#if defined(__linux__) || defined(__APPLE__)
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std::string SourceFormatter::format(char const* source) {
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char output[1024];
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// First check if clang-format is available.
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FILE* fp = popen("clang-format -version", "r");
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// Need to drain the output
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while (fgets(output, 1024, fp) != NULL) {}
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int status = pclose(fp);
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if (!fp || !WEXITSTATUS(status)) {
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std::call_once(mClangWarningFlag, []() {
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utils::slog.w << "[matdbg] unable to run clang-format to format shader file. "
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<< "Please make sure it's installed." << utils::io::endl;
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});
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return source;
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}
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// Write the source to a temp file for formatting
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char const* TMP_FILENAME = "/tmp/matdbg-tmp-src.cpp";
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fp = fopen(TMP_FILENAME, "w");
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if (!fp) {
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return source;
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}
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// Unknown if the input is 0-terminated so we put it in a string first.
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std::string original(source);
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fputs(original.c_str(), fp);
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fflush(fp);
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pclose(fp);
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std::string const CLANG_FORMAT_OPTIONS =
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"-style='{"
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"BasedOnStyle: Google, "
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"IndentWidth: 4, "
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"MaxEmptyLinesToKeep: 2"
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"}'";
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fp = popen(("clang-format " + CLANG_FORMAT_OPTIONS + "< " + TMP_FILENAME).c_str(), "r");
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if (!fp) {
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return original;
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}
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std::stringstream outStream;
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while (fgets(output, 1024, fp) != NULL) {
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outStream << output;
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}
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status = pclose(fp);
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if (WEXITSTATUS(status)) {
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utils::slog.w << "[matdbg] clang-format failed with code=" << WEXITSTATUS(status)
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<< utils::io::endl;
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}
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return outStream.str();
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}
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#else
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std::string SourceFormatter::format(char const* source) {
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std::call_once(mClangWarningFlag, []() {
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utils::slog.w <<"[matdbg]: source formatting is not available on this platform" <<
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utils::io::endl;
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});
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return source;
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}
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#endif
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} // filament::matdbg
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