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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmUseMangledMesaCommand.h"
#include "cmSystemTools.h"
#include <cmsys/RegularExpression.hxx>
bool cmUseMangledMesaCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
if(this->Disallowed(cmPolicies::CMP0030,
"The use_mangled_mesa command should not be called; see CMP0030."))
{ return true; }
// expected two arguments:
// arguement one: the full path to gl_mangle.h
// arguement two : directory for output of edited headers
if(args.size() != 2)
{
this->SetError("called with incorrect number of arguments");
return false;
}
const char* inputDir = args[0].c_str();
std::string glh = inputDir;
glh += "/";
glh += "gl.h";
if(!cmSystemTools::FileExists(glh.c_str()))
{
std::string e = "Bad path to Mesa, could not find: ";
e += glh;
e += " ";
this->SetError(e.c_str());
return false;
}
const char* destDir = args[1].c_str();
std::vector<std::string> files;
cmSystemTools::Glob(inputDir, "\\.h$", files);
if(files.size() == 0)
{
cmSystemTools::Error("Could not open Mesa Directory ", inputDir);
return false;
}
cmSystemTools::MakeDirectory(destDir);
for(std::vector<std::string>::iterator i = files.begin();
i != files.end(); ++i)
{
std::string path = inputDir;
path += "/";
path += *i;
this->CopyAndFullPathMesaHeader(path.c_str(), destDir);
}
return true;
}
void
cmUseMangledMesaCommand::
CopyAndFullPathMesaHeader(const char* source,
const char* outdir)
{
std::string dir, file;
cmSystemTools::SplitProgramPath(source, dir, file);
std::string outFile = outdir;
outFile += "/";
outFile += file;
std::string tempOutputFile = outFile;
tempOutputFile += ".tmp";
std::ofstream fout(tempOutputFile.c_str());
if(!fout)
{
cmSystemTools::Error("Could not open file for write in copy operation: ",
tempOutputFile.c_str(), outdir);
cmSystemTools::ReportLastSystemError("");
return;
}
std::ifstream fin(source);
if(!fin)
{
cmSystemTools::Error("Could not open file for read in copy operation",
source);
return;
}
// now copy input to output and expand variables in the
// input file at the same time
std::string inLine;
// regular expression for any #include line
cmsys::RegularExpression includeLine(
"^[ \t]*#[ \t]*include[ \t]*[<\"]([^\">]+)[\">]");
// regular expression for gl/ or GL/ in a file (match(1) of above)
cmsys::RegularExpression glDirLine("(gl|GL)(/|\\\\)([^<\"]+)");
// regular expression for gl GL or xmesa in a file (match(1) of above)
cmsys::RegularExpression glLine("(gl|GL|xmesa)");
while(cmSystemTools::GetLineFromStream(fin,inLine))
{
if(includeLine.find(inLine.c_str()))
{
std::string includeFile = includeLine.match(1);
if(glDirLine.find(includeFile.c_str()))
{
std::string gfile = glDirLine.match(3);
fout << "#include \"" << outdir << "/" << gfile.c_str() << "\"\n";
}
else if(glLine.find(includeFile.c_str()))
{
fout << "#include \"" << outdir << "/" <<
includeLine.match(1).c_str() << "\"\n";
}
else
{
fout << inLine << "\n";
}
}
else
{
fout << inLine << "\n";
}
}
// close the files before attempting to copy
fin.close();
fout.close();
cmSystemTools::CopyFileIfDifferent(tempOutputFile.c_str(),
outFile.c_str());
cmSystemTools::RemoveFile(tempOutputFile.c_str());
}
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