/*============================================================================
  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 "cmCPackCygwinSourceGenerator.h"

#include "cmake.h"
#include "cmGlobalGenerator.h"
#include "cmLocalGenerator.h"
#include "cmSystemTools.h"
#include "cmMakefile.h"
#include "cmGeneratedFileStream.h"
#include "cmCPackLog.h"

#include <cmsys/SystemTools.hxx>

// Includes needed for implementation of RenameFile.  This is not in
// system tools because it is not implemented robustly enough to move
// files across directories.
#ifdef _WIN32
# include <windows.h>
# include <sys/stat.h>
#endif

//----------------------------------------------------------------------
cmCPackCygwinSourceGenerator::cmCPackCygwinSourceGenerator()
{
}

//----------------------------------------------------------------------
cmCPackCygwinSourceGenerator::~cmCPackCygwinSourceGenerator()
{
}

//----------------------------------------------------------------------
int cmCPackCygwinSourceGenerator::InitializeInternal()
{
  this->SetOptionIfNotSet("CPACK_INCLUDE_TOPLEVEL_DIRECTORY", "0");
  return this->Superclass::InitializeInternal();
}

//----------------------------------------------------------------------
int cmCPackCygwinSourceGenerator::CompressFiles(const char* outFileName,
  const char* toplevel, const std::vector<std::string>& files)
{
  // Create a tar file of the sources
  std::string packageDirFileName
    = this->GetOption("CPACK_TEMPORARY_DIRECTORY");
  packageDirFileName += ".tar.bz2";
  std::string output;
  // skip one parent up to the cmCPackTarBZip2Generator
  // to create tar.bz2 file with the list of source
  // files
  this->Compress = BZIP2; 
  if ( !this->cmCPackTarBZip2Generator::
       CompressFiles(packageDirFileName.c_str(),
      toplevel, files) )
    {
    return 0;
    }
  // Now create a tar file that contains the above .tar.bz2 file
  // and the CPACK_CYGWIN_PATCH_FILE and CPACK_TOPLEVEL_DIRECTORY
  // files
  std::string compressOutFile = packageDirFileName;
  // at this point compressOutFile is the full path to 
  // _CPack_Package/.../package-2.5.0.tar.bz2
  // we want to create a tar _CPack_Package/.../package-2.5.0-1-src.tar.bz2
  // with these 
  //   _CPack_Package/.../package-2.5.0-1.patch 
  //   _CPack_Package/.../package-2.5.0-1.sh
  //   _CPack_Package/.../package-2.5.0.tar.bz2
  // the -1 is CPACK_CYGWIN_PATCH_NUMBER
  
  // first copy the patch file and the .sh file
  // to the toplevel cpack temp dir
  
  // copy the patch file into place
  if(!this->GetOption("CPACK_CYGWIN_PATCH_FILE"))
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR,
                  "No patch file specified for cygwin sources.");
    return 0;
    }
  if(!cmSystemTools::CopyFileAlways(
       this->GetOption("CPACK_CYGWIN_PATCH_FILE"),
       this->GetOption("CPACK_TOPLEVEL_DIRECTORY")))
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR, "problem copying: ["
                  << this->GetOption("CPACK_CYGWIN_PATCH_FILE") << "]\nto\n["
                  << this->GetOption("CPACK_TOPLEVEL_DIRECTORY") << "]\n");
    return 0;
    }
  if(!this->GetOption("CPACK_CYGWIN_BUILD_SCRIPT"))
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR, 
                  "No build script specified for cygwin sources.");
    return 0;
    }
  // copy the build script into place
  if(!cmSystemTools::CopyFileAlways(
       this->GetOption("CPACK_CYGWIN_BUILD_SCRIPT"),
       this->GetOption("CPACK_TOPLEVEL_DIRECTORY")))
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR, "problem copying: "
                  << this->GetOption("CPACK_CYGWIN_BUILD_SCRIPT") << "\nto\n"
                  << this->GetOption("CPACK_TOPLEVEL_DIRECTORY") << "]\n");
    return 0;
    }
  std::string outerTarFile
    = this->GetOption("CPACK_TEMPORARY_DIRECTORY");
  outerTarFile += "-";
  const char* patch = this->GetOption("CPACK_CYGWIN_PATCH_NUMBER");
  if(!patch)
    {
    cmCPackLogger(cmCPackLog::LOG_WARNING, "CPACK_CYGWIN_PATCH_NUMBER"
                  << " not specified, defaulting to 1\n");
    patch = "1";
    }
  outerTarFile += patch;
  outerTarFile += "-src.tar.bz2";
  std::string tmpDir = this->GetOption("CPACK_TOPLEVEL_DIRECTORY");
  std::string buildScript = tmpDir;
  buildScript += "/";
  buildScript += cmSystemTools::GetFilenameName(
    this->GetOption("CPACK_CYGWIN_BUILD_SCRIPT"));
  std::string patchFile = tmpDir;
  patchFile += "/";
  patchFile += cmSystemTools::GetFilenameName(
    this->GetOption("CPACK_CYGWIN_PATCH_FILE"));
  std::vector<std::string> outerFiles;
  std::string file = cmSystemTools::GetFilenameName(compressOutFile);
  std::string sourceTar = cmSystemTools::GetFilenamePath(compressOutFile);
  sourceTar += "/";
  sourceTar += file;
  // a source release in cygwin should have the build script used
  // to build the package, the patch file that is different from the
  // regular upstream version of the sources, and a bziped tar file
  // of the original sources
  outerFiles.push_back(buildScript);
  outerFiles.push_back(patchFile);
  outerFiles.push_back(sourceTar);
  if ( !this->cmCPackTarBZip2Generator::
       CompressFiles(outerTarFile.c_str(),
                     tmpDir.c_str(), outerFiles) )
    {
    return 0;
    }
  return 1;
}

const char* cmCPackCygwinSourceGenerator::GetPackagingInstallPrefix()
{
  this->InstallPrefix = "/";
  this->InstallPrefix += this->GetOption("CPACK_PACKAGE_FILE_NAME");
  return this->InstallPrefix.c_str();
}

const char* cmCPackCygwinSourceGenerator::GetOutputExtension()
{
  this->OutputExtension = "-";
  const char* patch = this->GetOption("CPACK_CYGWIN_PATCH_NUMBER"); 
  if(!patch)
    {
    cmCPackLogger(cmCPackLog::LOG_WARNING, "CPACK_CYGWIN_PATCH_NUMBER"
                  << " not specified, defaulting to 1\n");
    patch = "1";
    }
  this->OutputExtension += patch;
  this->OutputExtension += "-src.tar.bz2";
  return this->OutputExtension.c_str();
}
  
