ENH: add Use mangled mesa command

1 files changed, 154 insertions, 0 deletions

diff --git a/Source/cmUseMangledMesaCommand.cxx b/Source/cmUseMangledMesaCommand.cxx
new file mode 100644
index 0000000000..1422db524c
--- /dev/null
+++ b/Source/cmUseMangledMesaCommand.cxx
@@ -0,0 +1,154 @@
+/*=========================================================================
+
+  Program:   Insight Segmentation & Registration Toolkit
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+Copyright (c) 2001 Insight Consortium
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+ * The name of the Insight Consortium, nor the names of any consortium members,
+   nor of any contributors, may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+  * Modified source versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+=========================================================================*/
+#include "cmUseMangledMesaCommand.h"
+#include "cmSystemTools.h"
+
+// cmUseMangledMesaCommand
+bool cmUseMangledMesaCommand::InitialPass(std::vector<std::string>& args)
+{ 
+  // 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;
+    }
+  m_Makefile->ExpandVariablesInString(args[0]);
+  m_Makefile->ExpandVariablesInString(args[1]);
+  const char* inputFileName = args[0].c_str();
+  const char* destDir = args[1].c_str();
+  std::string dir, file;
+  cmSystemTools::SplitProgramPath(inputFileName, dir, file);
+  std::vector<std::string> files;
+  cmSystemTools::Glob(dir.c_str(), "\\.h$", files);
+  if(files.size() == 0)
+    {
+    cmSystemTools::Error("Could not open Mesa Directory ", dir.c_str());
+    return false;
+    }
+  cmSystemTools::MakeDirectory(destDir);
+  for(std::vector<std::string>::iterator i = files.begin();
+      i != files.end(); ++i)
+    {
+    std::string path = dir.c_str();
+    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 operatation: ", 
+                         tempOutputFile.c_str(), outdir);
+    return;
+    }
+  std::ifstream fin(source);
+  if(!fin)
+    {
+    cmSystemTools::Error("Could not open file for read in copy operatation",
+                         source);
+    return;
+    }
+  // now copy input to output and expand varibles in the
+  // input file at the same time
+  const int bufSize = 4096;
+  char buffer[bufSize];
+  std::string inLine;  
+  // regular expression for any #include line
+  cmRegularExpression includeLine("^[ \t]*#[ \t]*include[ \t]*[<\"]([^\">]+)[\">]");
+  // regular expression for gl/ or GL/ in a file (match(1) of above)
+  cmRegularExpression glDirLine("(gl|GL)(/|\\\\)([^<\"]+)");
+  // regular expression for gl GL or xmesa in a file (match(1) of above)
+  cmRegularExpression glLine("(gl|GL|xmesa)");
+  while(fin)
+    {
+    fin.getline(buffer, bufSize);
+    if(fin)
+      {
+      inLine = buffer;
+      if(includeLine.find(inLine.c_str()))
+        {
+        std::string includeFile = includeLine.match(1);
+        if(glDirLine.find(includeFile.c_str()))
+          {
+          std::string file = glDirLine.match(3);
+          fout << "#include \"" << outdir << "/" << file.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());
+}
+