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104 lines
3.4 KiB
104 lines
3.4 KiB
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#include "cmUseMangledMesaCommand.h"
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#include "cmsys/FStream.hxx"
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#include "cmsys/RegularExpression.hxx"
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#include "cmExecutionStatus.h"
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#include "cmStringAlgorithms.h"
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#include "cmSystemTools.h"
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namespace {
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void CopyAndFullPathMesaHeader(const std::string& source,
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const std::string& outdir);
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}
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bool cmUseMangledMesaCommand(std::vector<std::string> const& args,
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cmExecutionStatus& status)
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{
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// expected two arguments:
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// argument one: the full path to gl_mangle.h
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// argument two : directory for output of edited headers
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if (args.size() != 2) {
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status.SetError("called with incorrect number of arguments");
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return false;
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}
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const std::string& inputDir = args[0];
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std::string glh = cmStrCat(inputDir, "/gl.h");
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if (!cmSystemTools::FileExists(glh)) {
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std::string e = cmStrCat("Bad path to Mesa, could not find: ", glh, ' ');
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status.SetError(e);
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return false;
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}
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const std::string& destDir = args[1];
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std::vector<std::string> files;
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cmSystemTools::Glob(inputDir, "\\.h$", files);
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if (files.empty()) {
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cmSystemTools::Error("Could not open Mesa Directory " + inputDir);
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return false;
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}
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cmSystemTools::MakeDirectory(destDir);
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for (std::string const& f : files) {
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std::string path = cmStrCat(inputDir, '/', f);
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CopyAndFullPathMesaHeader(path, destDir);
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}
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return true;
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}
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namespace {
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void CopyAndFullPathMesaHeader(const std::string& source,
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const std::string& outdir)
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{
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std::string dir;
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std::string file;
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cmSystemTools::SplitProgramPath(source, dir, file);
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std::string outFile = cmStrCat(outdir, '/', file);
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std::string tempOutputFile = cmStrCat(outFile, ".tmp");
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cmsys::ofstream fout(tempOutputFile.c_str());
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if (!fout) {
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cmSystemTools::Error("Could not open file for write in copy operation: " +
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tempOutputFile + outdir);
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cmSystemTools::ReportLastSystemError("");
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return;
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}
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cmsys::ifstream fin(source.c_str());
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if (!fin) {
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cmSystemTools::Error("Could not open file for read in copy operation" +
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source);
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return;
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}
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// now copy input to output and expand variables in the
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// input file at the same time
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std::string inLine;
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// regular expression for any #include line
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cmsys::RegularExpression includeLine(
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"^[ \t]*#[ \t]*include[ \t]*[<\"]([^\">]+)[\">]");
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// regular expression for gl/ or GL/ in a file (match(1) of above)
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cmsys::RegularExpression glDirLine(R"((gl|GL)(/|\\)([^<"]+))");
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// regular expression for gl GL or xmesa in a file (match(1) of above)
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cmsys::RegularExpression glLine("(gl|GL|xmesa)");
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while (cmSystemTools::GetLineFromStream(fin, inLine)) {
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if (includeLine.find(inLine)) {
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std::string includeFile = includeLine.match(1);
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if (glDirLine.find(includeFile)) {
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std::string gfile = glDirLine.match(3);
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fout << "#include \"" << outdir << "/" << gfile << "\"\n";
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} else if (glLine.find(includeFile)) {
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fout << "#include \"" << outdir << "/" << includeLine.match(1)
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<< "\"\n";
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} else {
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fout << inLine << "\n";
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}
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} else {
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fout << inLine << "\n";
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}
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}
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// close the files before attempting to copy
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fin.close();
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fout.close();
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cmSystemTools::MoveFileIfDifferent(tempOutputFile, outFile);
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}
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}
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