CPack: Refactor API in order to handle multi-file packages

The multi-argument CompressFiles(...) method has been replace by the
no-argument PackageFiles() method and 3 more member variables.  This
will enable implemention of multi-package generators.  Now each specific
generator (which overloads PackageFiles()) may decide to change the name
and/or the number of generated package files.

24 files changed, 173 insertions, 118 deletions

diff --git a/Source/CPack/cmCPackArchiveGenerator.cxx b/Source/CPack/cmCPackArchiveGenerator.cxx
index a52d05e..a12b5ce 100644
--- a/Source/CPack/cmCPackArchiveGenerator.cxx
+++ b/Source/CPack/cmCPackArchiveGenerator.cxx
@@ -166,8 +166,7 @@ int cmCPackArchiveGenerator::InitializeInternal()
   return this->Superclass::InitializeInternal();
 }
 
-int cmCPackArchiveGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackArchiveGenerator::PackageFiles()
 {
   int res = ARCHIVE_OK;
 #define CHECK_ARCHIVE_ERROR(res, msg)           \
@@ -180,14 +179,15 @@ int cmCPackArchiveGenerator::CompressFiles(const char* outFileName,
                   << "\n");                       \
     }
   cmCPackLogger(cmCPackLog::LOG_DEBUG, "Toplevel: "
-                << (toplevel ? toplevel : "(NULL)") << std::endl);
+                << toplevel << std::endl);
+
   // create a new archive
   struct archive* a = archive_write_new();
   // Set the compress and archive types for the archive
   SetArchiveType(a, this->Compress, this->Archive);
   // Open binary stream
   cmGeneratedFileStream* gf = new cmGeneratedFileStream;
-  gf->Open(outFileName, false, true);
+  gf->Open(packageFileNames[0].c_str(), false, true);
   StreamData data(gf, this);
   // pass callbacks to archive_write_open to handle stream
   res = archive_write_open(a,
@@ -204,13 +204,13 @@ int cmCPackArchiveGenerator::CompressFiles(const char* outFileName,
   CHECK_ARCHIVE_ERROR(res, "archive_read_disk_set_standard_lookup:");
   std::vector<std::string>::const_iterator fileIt;
   std::string dir = cmSystemTools::GetCurrentWorkingDirectory();
-  cmSystemTools::ChangeDirectory(toplevel);
+  cmSystemTools::ChangeDirectory(toplevel.c_str());
   for ( fileIt = files.begin(); fileIt != files.end(); ++ fileIt )
     {
     // create a new entry for each file
     struct archive_entry *entry = archive_entry_new();
     // Get the relative path to the file
-    std::string rp = cmSystemTools::RelativePath(toplevel, fileIt->c_str());
+    std::string rp = cmSystemTools::RelativePath(toplevel.c_str(), fileIt->c_str());
     // Set the name of the entry to the file name
     archive_entry_set_pathname(entry, rp.c_str());  
     res = archive_read_disk_entry_from_file(disk, entry, -1, 0);
diff --git a/Source/CPack/cmCPackArchiveGenerator.h b/Source/CPack/cmCPackArchiveGenerator.h
index 486db8e..d3409ae 100644
--- a/Source/CPack/cmCPackArchiveGenerator.h
+++ b/Source/CPack/cmCPackArchiveGenerator.h
@@ -37,8 +37,7 @@ public:
 
 protected:
   virtual int InitializeInternal();
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
   virtual const char* GetOutputExtension() = 0;
   CompressType Compress;
   ArchiveType Archive;
diff --git a/Source/CPack/cmCPackBundleGenerator.cxx b/Source/CPack/cmCPackBundleGenerator.cxx
index 247a043..a9d283a 100644
--- a/Source/CPack/cmCPackBundleGenerator.cxx
+++ b/Source/CPack/cmCPackBundleGenerator.cxx
@@ -53,10 +53,8 @@ const char* cmCPackBundleGenerator::GetPackagingInstallPrefix()
 }
 
 //----------------------------------------------------------------------
-int cmCPackBundleGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackBundleGenerator::PackageFiles()
 {
-  (void) files;
 
   // Get required arguments ...
   const std::string cpack_bundle_name = this->GetOption("CPACK_BUNDLE_NAME")
@@ -167,5 +165,5 @@ int cmCPackBundleGenerator::CompressFiles(const char* outFileName,
     cmSystemTools::SetPermissions(command_target.str().c_str(), 0777);
     }
 
-  return this->CreateDMG(toplevel, outFileName);
+  return this->CreateDMG(toplevel.c_str(), packageFileNames[0].c_str());
 }
diff --git a/Source/CPack/cmCPackBundleGenerator.h b/Source/CPack/cmCPackBundleGenerator.h
index ce05541..82814b0 100644
--- a/Source/CPack/cmCPackBundleGenerator.h
+++ b/Source/CPack/cmCPackBundleGenerator.h
@@ -31,8 +31,7 @@ public:
 protected:
   virtual int InitializeInternal();
   virtual const char* GetPackagingInstallPrefix();
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
 
   std::string InstallPrefix;
 };
diff --git a/Source/CPack/cmCPackCygwinBinaryGenerator.cxx b/Source/CPack/cmCPackCygwinBinaryGenerator.cxx
index 853a1be..6c8fc54 100644
--- a/Source/CPack/cmCPackCygwinBinaryGenerator.cxx
+++ b/Source/CPack/cmCPackCygwinBinaryGenerator.cxx
@@ -41,8 +41,7 @@ int cmCPackCygwinBinaryGenerator::InitializeInternal()
 }
 
 //----------------------------------------------------------------------
-int cmCPackCygwinBinaryGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackCygwinBinaryGenerator::PackageFiles()
 {
   std::string packageName = this->GetOption("CPACK_PACKAGE_NAME");
   packageName += "-";
@@ -70,12 +69,10 @@ int cmCPackCygwinBinaryGenerator::CompressFiles(const char* outFileName,
   ofs << manifest << "\n";
   }
   // add the manifest file to the list of all files
-  std::vector<std::string> filesWithManifest = files;
-  filesWithManifest.push_back(manifestFile);
+  files.push_back(manifestFile);
   
   // create the bzip2 tar file 
-  return this->Superclass::CompressFiles(outFileName, toplevel, 
-                                         filesWithManifest);
+  return this->Superclass::PackageFiles();
 }
 
 const char* cmCPackCygwinBinaryGenerator::GetOutputExtension()
diff --git a/Source/CPack/cmCPackCygwinBinaryGenerator.h b/Source/CPack/cmCPackCygwinBinaryGenerator.h
index 19b09f0..38f6df1 100644
--- a/Source/CPack/cmCPackCygwinBinaryGenerator.h
+++ b/Source/CPack/cmCPackCygwinBinaryGenerator.h
@@ -30,8 +30,7 @@ public:
   virtual ~cmCPackCygwinBinaryGenerator();
 protected:
   virtual int InitializeInternal();
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
   virtual const char* GetOutputExtension();
   std::string OutputExtension;
 };
diff --git a/Source/CPack/cmCPackCygwinSourceGenerator.cxx b/Source/CPack/cmCPackCygwinSourceGenerator.cxx
index cca8338..f4ae35f 100644
--- a/Source/CPack/cmCPackCygwinSourceGenerator.cxx
+++ b/Source/CPack/cmCPackCygwinSourceGenerator.cxx
@@ -48,21 +48,19 @@ int cmCPackCygwinSourceGenerator::InitializeInternal()
 }
 
 //----------------------------------------------------------------------
-int cmCPackCygwinSourceGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackCygwinSourceGenerator::PackageFiles()
 {
   // Create a tar file of the sources
   std::string packageDirFileName
     = this->GetOption("CPACK_TEMPORARY_DIRECTORY");
   packageDirFileName += ".tar.bz2";
+  packageFileNames[0] = packageDirFileName;
   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) )
+  if ( !this->cmCPackTarBZip2Generator::PackageFiles() )
     {
     return 0;
     }
@@ -135,21 +133,25 @@ int cmCPackCygwinSourceGenerator::CompressFiles(const char* outFileName,
   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;
+  /* reset list of file to be packaged */
+  files.clear();
   // 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) )
+  files.push_back(buildScript);
+  files.push_back(patchFile);
+  files.push_back(sourceTar);
+  /* update the name of the produced package */
+  packageFileNames[0] = outerTarFile;
+  /* update the toplevel dir */
+  toplevel = tmpDir;
+  if ( !this->cmCPackTarBZip2Generator::PackageFiles() )
     {
     return 0;
     }
diff --git a/Source/CPack/cmCPackCygwinSourceGenerator.h b/Source/CPack/cmCPackCygwinSourceGenerator.h
index 9817cf9..9d98a9b 100644
--- a/Source/CPack/cmCPackCygwinSourceGenerator.h
+++ b/Source/CPack/cmCPackCygwinSourceGenerator.h
@@ -31,8 +31,7 @@ public:
 protected:
   const char* GetPackagingInstallPrefix();
   virtual int InitializeInternal();
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
   virtual const char* GetOutputExtension();
   std::string InstallPrefix;
   std::string OutputExtension;
diff --git a/Source/CPack/cmCPackDebGenerator.cxx b/Source/CPack/cmCPackDebGenerator.cxx
index a8fed1d..58c6dc3 100644
--- a/Source/CPack/cmCPackDebGenerator.cxx
+++ b/Source/CPack/cmCPackDebGenerator.cxx
@@ -48,9 +48,7 @@ int cmCPackDebGenerator::InitializeInternal()
 }
 
 //----------------------------------------------------------------------
-int cmCPackDebGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel,
-  const std::vector<std::string>& files)
+int cmCPackDebGenerator::PackageFiles()
 {
   this->ReadListFile("CPackDeb.cmake");
   const char* cmakeExecutable = this->GetOption("CMAKE_COMMAND");
@@ -141,7 +139,7 @@ int cmCPackDebGenerator::CompressFiles(const char* outFileName,
   // now add all directories which have to be compressed
   // collect all top level install dirs for that
   // e.g. /opt/bin/foo, /usr/bin/bar and /usr/bin/baz would give /usr and /opt
-  size_t topLevelLength = strlen(toplevel);
+  size_t topLevelLength = toplevel.length();
   std::set<std::string> installDirs;
   for (std::vector<std::string>::const_iterator fileIt = files.begin(); 
        fileIt != files.end(); ++ fileIt )
@@ -160,7 +158,7 @@ int cmCPackDebGenerator::CompressFiles(const char* outFileName,
   std::string output;
   int retVal = -1;
   int res = cmSystemTools::RunSingleCommand(cmd.c_str(), &output,
-    &retVal, toplevel, this->GeneratorVerbose, 0);
+    &retVal, toplevel.c_str(), this->GeneratorVerbose, 0);
 
   if ( !res || retVal )
     {
@@ -196,7 +194,7 @@ int cmCPackDebGenerator::CompressFiles(const char* outFileName,
       //std::string output;
       //int retVal = -1;
       res = cmSystemTools::RunSingleCommand(cmd.c_str(), &output,
-        &retVal, toplevel, this->GeneratorVerbose, 0);
+        &retVal, toplevel.c_str(), this->GeneratorVerbose, 0);
       // debian md5sums entries are like this:
       // 014f3604694729f3bf19263bac599765  usr/bin/ccmake
       // thus strip the full path (with the trailing slash)
@@ -237,7 +235,7 @@ int cmCPackDebGenerator::CompressFiles(const char* outFileName,
       }
     }
   res = cmSystemTools::RunSingleCommand(cmd.c_str(), &output,
-    &retVal, toplevel, this->GeneratorVerbose, 0);
+    &retVal, toplevel.c_str(), this->GeneratorVerbose, 0);
 
   if ( !res || retVal )
     {
@@ -263,7 +261,7 @@ int cmCPackDebGenerator::CompressFiles(const char* outFileName,
   arFiles.push_back(topLevelString + "debian-binary");
   arFiles.push_back(topLevelString + "control.tar.gz");
   arFiles.push_back(topLevelString + "data.tar.gz");
-  res = ar_append(outFileName, arFiles);
+  res = ar_append(packageFileNames[0].c_str(), arFiles);
   if ( res!=0 )
     {
     std::string tmpFile = this->GetOption("CPACK_TOPLEVEL_DIRECTORY");
diff --git a/Source/CPack/cmCPackDebGenerator.h b/Source/CPack/cmCPackDebGenerator.h
index d229944..4a357d1 100644
--- a/Source/CPack/cmCPackDebGenerator.h
+++ b/Source/CPack/cmCPackDebGenerator.h
@@ -33,8 +33,7 @@ public:
 
 protected:
   virtual int InitializeInternal();
-  virtual int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  virtual int PackageFiles();
   virtual const char* GetOutputExtension() { return ".deb"; }
 
 };
diff --git a/Source/CPack/cmCPackDragNDropGenerator.cxx b/Source/CPack/cmCPackDragNDropGenerator.cxx
index 95324cf..e12c98c 100644
--- a/Source/CPack/cmCPackDragNDropGenerator.cxx
+++ b/Source/CPack/cmCPackDragNDropGenerator.cxx
@@ -104,12 +104,10 @@ const char* cmCPackDragNDropGenerator::GetOutputExtension()
 }
 
 //----------------------------------------------------------------------
-int cmCPackDragNDropGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackDragNDropGenerator::PackageFiles()
 {
-  (void) files;
 
-  return this->CreateDMG(toplevel, outFileName);
+  return this->CreateDMG(toplevel, packageFileNames[0]);
 }
 
 //----------------------------------------------------------------------
diff --git a/Source/CPack/cmCPackDragNDropGenerator.h b/Source/CPack/cmCPackDragNDropGenerator.h
index 43a9617..8a4d774 100644
--- a/Source/CPack/cmCPackDragNDropGenerator.h
+++ b/Source/CPack/cmCPackDragNDropGenerator.h
@@ -29,8 +29,7 @@ public:
 protected:
   virtual int InitializeInternal();
   virtual const char* GetOutputExtension();
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
 
   bool CopyFile(cmOStringStream& source, cmOStringStream& target);
   bool RunCommand(cmOStringStream& command, std::string* output = 0);
diff --git a/Source/CPack/cmCPackGenerator.cxx b/Source/CPack/cmCPackGenerator.cxx
index 4a4b428..b59e980 100644
--- a/Source/CPack/cmCPackGenerator.cxx
+++ b/Source/CPack/cmCPackGenerator.cxx
@@ -100,6 +100,7 @@ int cmCPackGenerator::PrepareNames()
     }
 
   std::string destFile = pdir;
+  this->SetOptionIfNotSet("CPACK_OUTPUT_FILE_PREFIX", destFile.c_str());
   destFile += "/" + outName;
   std::string outFile = topDirectory + "/" + outName;
   this->SetOptionIfNotSet("CPACK_TOPLEVEL_DIRECTORY", topDirectory.c_str());
@@ -843,7 +844,7 @@ int cmCPackGenerator::DoPackage()
     }
 
   // The files to be installed
-  std::vector<std::string> files = gl.GetFiles();
+  files = gl.GetFiles();
 
   // For component installations, determine which files go into which
   // components.
@@ -866,34 +867,59 @@ int cmCPackGenerator::DoPackage()
       }
     }
 
-  if ( !this->CompressFiles(tempPackageFileName,
-      tempDirectory, files) || cmSystemTools::GetErrorOccuredFlag())
+
+  packageFileNames.clear();
+  /* Put at least one file name into the list of
+   * wanted packageFileNames. The specific generator
+   * may update this during PackageFiles.
+   * (either putting several names or updating the provided one)
+   */
+  packageFileNames.push_back(tempPackageFileName);
+  toplevel = tempDirectory;
+  if ( !this->PackageFiles() || cmSystemTools::GetErrorOccuredFlag())
     {
     cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem compressing the directory"
       << std::endl);
     return 0;
     }
 
-  cmCPackLogger(cmCPackLog::LOG_OUTPUT, "Finalize package" << std::endl);
-  cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Copy final package: "
-                << (tempPackageFileName ? tempPackageFileName : "(NULL)" )
-                << " to " 
-                << (packageFileName ? packageFileName : "(NULL)")
-                << std::endl);
-  if ( !cmSystemTools::CopyFileIfDifferent(tempPackageFileName,
-      packageFileName) )
+  /*
+   * Copy the generated packages to final destination
+   *  - there may be several of them
+   *  - the initially provided name may have changed
+   *    (because the specific generator did 'normalize' it)
+   */
+  cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Copying final package(s) ["
+                   <<packageFileNames.size()
+                   <<"]:"<<std::endl);
+  std::vector<std::string>::iterator it;
+  /* now copy package one by one */
+  for (it=packageFileNames.begin();it!=packageFileNames.end();++it)
     {
-    cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem copying the package: "
-                  << (tempPackageFileName ? tempPackageFileName : "(NULL)" )
-                  << " to " 
-                  << (packageFileName ? packageFileName : "(NULL)")
-                  << std::endl);
-    return 0;
+    std::string tmpPF(this->GetOption("CPACK_OUTPUT_FILE_PREFIX"));
+    tempPackageFileName = it->c_str();
+    tmpPF += "/"+cmSystemTools::GetFilenameName(*it);
+    packageFileName = tmpPF.c_str();
+    cmCPackLogger(cmCPackLog::LOG_DEBUG, "Copy final package(s): "
+        << (tempPackageFileName ? tempPackageFileName : "(NULL)" )
+        << " to "
+        << (packageFileName ? packageFileName : "(NULL)")
+        << std::endl);
+    if ( !cmSystemTools::CopyFileIfDifferent(tempPackageFileName,
+        packageFileName) )
+      {
+      cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem copying the package: "
+          << (tempPackageFileName ? tempPackageFileName : "(NULL)" )
+          << " to "
+          << (packageFileName ? packageFileName : "(NULL)")
+          << std::endl);
+      return 0;
+      }
+    cmCPackLogger(cmCPackLog::LOG_OUTPUT, "- package: "
+        << packageFileName
+        << " generated." << std::endl);
     }
 
-  cmCPackLogger(cmCPackLog::LOG_OUTPUT, "Package " 
-                << (packageFileName ? packageFileName : "(NULL)")
-                << " generated." << std::endl);
   return 1;
 }
 
@@ -984,12 +1010,8 @@ int cmCPackGenerator::SetCMakeRoot()
 }
 
 //----------------------------------------------------------------------
-int cmCPackGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackGenerator::PackageFiles()
 {
-  (void)outFileName;
-  (void)toplevel;
-  (void)files;
   return 0;
 }
 
diff --git a/Source/CPack/cmCPackGenerator.h b/Source/CPack/cmCPackGenerator.h
index 45188fe..74b780d 100644
--- a/Source/CPack/cmCPackGenerator.h
+++ b/Source/CPack/cmCPackGenerator.h
@@ -55,13 +55,22 @@ class cmCPackGenerator : public cmObject
 public:
   cmTypeMacro(cmCPackGenerator, cmObject);
   /**
-   * If verbose then more informaiton is printed out
+   * If verbose then more information is printed out
    */
   void SetVerbose(bool val) { this->GeneratorVerbose = val; }
 
   /**
-   * Do the actual processing. Subclass has to override it.
-   * Return 0 if error.
+   * Do the actual whole package processing.
+   * Subclass may redefine it but its usually enough
+   * to redefine @ref PackageFiles, because in fact
+   * this method do call:
+   *     - PrepareName
+   *     - clean-up temp dirs
+   *     - InstallProject (with the appropriate method)
+   *     - prepare list of files and/or components to be package
+   *     - PackageFiles
+   *     - Copy produced packages at the expected place
+   * @return 0 if error.
    */
   virtual int DoPackage();
 
@@ -94,13 +103,32 @@ public:
   bool ReadListFile(const char* moduleName);
 
 protected:
+  /**
+   * Prepare common used names by inspecting
+   * several CPACK_xxx var values.
+   */
   int PrepareNames();
+
+  /**
+   * Install the project using appropriate method.
+   */
   int InstallProject();
+
   int CleanTemporaryDirectory();
+
   virtual const char* GetOutputExtension() { return ".cpack"; }
   virtual const char* GetOutputPostfix() { return 0; }
-  virtual int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+
+  /**
+   * Package the list of files and/or components which
+   * has been prepared by the beginning of DoPackage.
+   * @pre @ref toplevel has been filled-in
+   * @pre the list of file @ref files has been populated
+   * @pre packageFileNames contains at least 1 entry
+   * @post packageFileNames may have been updated and contains
+   *       the list of packages generated by the specific generator.
+   */
+  virtual int PackageFiles();
   virtual const char* GetInstallPath();
   virtual const char* GetPackagingInstallPrefix();
 
@@ -134,11 +162,42 @@ protected:
 
   std::string InstallPath;
 
+  /**
+   * The list of package file names.
+   * At beginning of DoPackage the (generic) generator will populate
+   * the list of desired package file names then it will
+   * call the redefined method PackageFiles which is may
+   * either use this set of names (usually on entry there should be
+   * only a single name) or update the vector with the list
+   * of created package file names.
+   */
+  std::vector<std::string> packageFileNames;
+
+  /**
+   * The directory where all the files to be packaged reside.
+   * If the installer support components there will be one
+   * sub-directory for each component. In those directories
+   * one will find the file belonging to the specified component.
+   */
+  std::string toplevel;
+
+  /**
+   * The complete list of files to be packaged.
+   * This list will be populated by DoPackage before
+   * PackageFiles is called.
+   */
+  std::vector<std::string> files;
+
   std::string CPackSelf;
   std::string CMakeSelf;
   std::string CMakeRoot;
 
   std::map<std::string, cmCPackInstallationType> InstallationTypes;
+  /**
+   * The set of components.
+   * If component installation is supported then this map
+   * contains the component specified in CPACK_COMPONENTS_ALL
+   */
   std::map<std::string, cmCPackComponent> Components;
   std::map<std::string, cmCPackComponentGroup> ComponentGroups;
 
diff --git a/Source/CPack/cmCPackNSISGenerator.cxx b/Source/CPack/cmCPackNSISGenerator.cxx
index 8329546..f6f9fbc 100644
--- a/Source/CPack/cmCPackNSISGenerator.cxx
+++ b/Source/CPack/cmCPackNSISGenerator.cxx
@@ -43,11 +43,10 @@ cmCPackNSISGenerator::~cmCPackNSISGenerator()
 }
 
 //----------------------------------------------------------------------
-int cmCPackNSISGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackNSISGenerator::PackageFiles()
 {
-  (void)outFileName; // TODO: Fix nsis to force out file name
-  (void)toplevel;
+  // TODO: Fix nsis to force out file name
+
   std::string nsisInFileName = this->FindTemplate("NSIS.template.in");
   if ( nsisInFileName.size() == 0 )
     {
@@ -74,7 +73,7 @@ int cmCPackNSISGenerator::CompressFiles(const char* outFileName,
   std::vector<std::string>::const_iterator it;
   for ( it = files.begin(); it != files.end(); ++ it )
     {
-    std::string fileN = cmSystemTools::RelativePath(toplevel,
+    std::string fileN = cmSystemTools::RelativePath(toplevel.c_str(),
                                                     it->c_str());
     if (!this->Components.empty())
       {
@@ -88,13 +87,13 @@ int cmCPackNSISGenerator::CompressFiles(const char* outFileName,
     << str.str().c_str() << std::endl);
   this->SetOptionIfNotSet("CPACK_NSIS_DELETE_FILES", str.str().c_str());
   std::vector<std::string> dirs;
-  this->GetListOfSubdirectories(toplevel, dirs);
+  this->GetListOfSubdirectories(toplevel.c_str(), dirs);
   std::vector<std::string>::const_iterator sit;
   cmOStringStream dstr;
   for ( sit = dirs.begin(); sit != dirs.end(); ++ sit )
     {
     std::string componentName;
-    std::string fileN = cmSystemTools::RelativePath(toplevel, sit->c_str());
+    std::string fileN = cmSystemTools::RelativePath(toplevel.c_str(), sit->c_str());
     if ( fileN.empty() )
       {
       continue;
diff --git a/Source/CPack/cmCPackNSISGenerator.h b/Source/CPack/cmCPackNSISGenerator.h
index dff5b8f..6ad103f 100644
--- a/Source/CPack/cmCPackNSISGenerator.h
+++ b/Source/CPack/cmCPackNSISGenerator.h
@@ -37,8 +37,7 @@ protected:
   virtual int InitializeInternal();
   void CreateMenuLinks( cmOStringStream& str,
                         cmOStringStream& deleteStr);
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
   virtual const char* GetOutputExtension() { return ".exe"; }
   virtual const char* GetOutputPostfix() { return "win32"; }
 
diff --git a/Source/CPack/cmCPackOSXX11Generator.cxx b/Source/CPack/cmCPackOSXX11Generator.cxx
index a3b5759..2d4bb97 100644
--- a/Source/CPack/cmCPackOSXX11Generator.cxx
+++ b/Source/CPack/cmCPackOSXX11Generator.cxx
@@ -33,12 +33,10 @@ cmCPackOSXX11Generator::~cmCPackOSXX11Generator()
 }
 
 //----------------------------------------------------------------------
-int cmCPackOSXX11Generator::CompressFiles(const char* outFileName,
-  const char* toplevel,
-  const std::vector<std::string>& files)
+int cmCPackOSXX11Generator::PackageFiles()
 {
-  (void) files; // TODO: Fix api to not need files.
-  (void) toplevel; // TODO: Use toplevel
+  // TODO: Use toplevel ?
+  //       It is used! Is this an obsolete comment?
 
   const char* cpackPackageExecutables
     = this->GetOption("CPACK_PACKAGE_EXECUTABLES");
@@ -144,7 +142,7 @@ int cmCPackOSXX11Generator::CompressFiles(const char* outFileName,
   dmgCmd << "\"" << this->GetOption("CPACK_INSTALLER_PROGRAM_DISK_IMAGE")
          << "\" create -ov -format UDZO -srcfolder \"" 
          << diskImageDirectory.c_str() 
-         << "\" \"" << outFileName << "\"";
+         << "\" \"" << packageFileNames[0] << "\"";
   int retVal = 1;
   cmCPackLogger(cmCPackLog::LOG_VERBOSE,
                 "Compress disk image using command: " 
diff --git a/Source/CPack/cmCPackOSXX11Generator.h b/Source/CPack/cmCPackOSXX11Generator.h
index 7fd60b4..b7bd243 100644
--- a/Source/CPack/cmCPackOSXX11Generator.h
+++ b/Source/CPack/cmCPackOSXX11Generator.h
@@ -33,8 +33,7 @@ public:
 
 protected:
   virtual int InitializeInternal();
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
   virtual const char* GetPackagingInstallPrefix();
   virtual const char* GetOutputExtension() { return ".dmg"; }
 
diff --git a/Source/CPack/cmCPackPackageMakerGenerator.cxx b/Source/CPack/cmCPackPackageMakerGenerator.cxx
index 9333131..ef81da8 100644
--- a/Source/CPack/cmCPackPackageMakerGenerator.cxx
+++ b/Source/CPack/cmCPackPackageMakerGenerator.cxx
@@ -59,12 +59,10 @@ int cmCPackPackageMakerGenerator::CopyInstallScript(const char* resdir,
 }
 
 //----------------------------------------------------------------------
-int cmCPackPackageMakerGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel,
-  const std::vector<std::string>& files)
+int cmCPackPackageMakerGenerator::PackageFiles()
 {
-  (void) files; // TODO: Fix api to not need files.
-  (void) toplevel; // TODO: Use toplevel
+  // TODO: Use toplevel
+  //       It is used! Is this an obsolete comment?
 
   std::string resDir; // Where this package's resources will go.
   std::string packageDirFileName
@@ -318,7 +316,7 @@ int cmCPackPackageMakerGenerator::CompressFiles(const char* outFileName,
   cmOStringStream dmgCmd;
   dmgCmd << "\"" << this->GetOption("CPACK_INSTALLER_PROGRAM_DISK_IMAGE")
     << "\" create -ov -format UDZO -srcfolder \"" << packageDirFileName
-    << "\" \"" << outFileName << "\"";
+    << "\" \"" << packageFileNames[0] << "\"";
   std::string output;
   int retVal = 1;
   int numTries = 4;
diff --git a/Source/CPack/cmCPackPackageMakerGenerator.h b/Source/CPack/cmCPackPackageMakerGenerator.h
index 36cd594..2bab947 100644
--- a/Source/CPack/cmCPackPackageMakerGenerator.h
+++ b/Source/CPack/cmCPackPackageMakerGenerator.h
@@ -42,8 +42,7 @@ protected:
                         const char* script,
                         const char* name);
   virtual int InitializeInternal();
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
   virtual const char* GetOutputExtension() { return ".dmg"; }
   virtual const char* GetOutputPostfix() { return "darwin"; }
 
diff --git a/Source/CPack/cmCPackRPMGenerator.cxx b/Source/CPack/cmCPackRPMGenerator.cxx
index fb85581..01b6b06 100644
--- a/Source/CPack/cmCPackRPMGenerator.cxx
+++ b/Source/CPack/cmCPackRPMGenerator.cxx
@@ -31,9 +31,7 @@ int cmCPackRPMGenerator::InitializeInternal()
 }
 
 //----------------------------------------------------------------------
-int cmCPackRPMGenerator::CompressFiles(const char* /*outFileName*/,
-  const char* /*toplevel*/,
-  const std::vector<std::string>& /*files*/)
+int cmCPackRPMGenerator::PackageFiles()
 {
   this->ReadListFile("CPackRPM.cmake");
   if (!this->IsSet("RPMBUILD_EXECUTABLE")) 
diff --git a/Source/CPack/cmCPackRPMGenerator.h b/Source/CPack/cmCPackRPMGenerator.h
index c607f35..570e45f 100644
--- a/Source/CPack/cmCPackRPMGenerator.h
+++ b/Source/CPack/cmCPackRPMGenerator.h
@@ -37,8 +37,7 @@ public:
 
 protected:
   virtual int InitializeInternal();
-  virtual int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  virtual int PackageFiles();
   virtual const char* GetOutputExtension() { return ".rpm"; }
 
 };
diff --git a/Source/CPack/cmCPackSTGZGenerator.cxx b/Source/CPack/cmCPackSTGZGenerator.cxx
index a687e0d..184c557 100644
--- a/Source/CPack/cmCPackSTGZGenerator.cxx
+++ b/Source/CPack/cmCPackSTGZGenerator.cxx
@@ -52,14 +52,13 @@ int cmCPackSTGZGenerator::InitializeInternal()
 }
 
 //----------------------------------------------------------------------
-int cmCPackSTGZGenerator::CompressFiles(const char* outFileName,
-  const char* toplevel, const std::vector<std::string>& files)
+int cmCPackSTGZGenerator::PackageFiles()
 {
-  if ( !this->Superclass::CompressFiles(outFileName, toplevel, files) )
+  if ( !this->Superclass::PackageFiles() )
     {
     return 0;
     }
-  return cmSystemTools::SetPermissions(outFileName,
+  return cmSystemTools::SetPermissions(packageFileNames[0].c_str(),
 #if defined( _MSC_VER ) || defined( __MINGW32__ )
     S_IREAD | S_IWRITE | S_IEXEC
 #elif defined( __BORLANDC__ )
diff --git a/Source/CPack/cmCPackSTGZGenerator.h b/Source/CPack/cmCPackSTGZGenerator.h
index fc51e4d..ccceec8 100644
--- a/Source/CPack/cmCPackSTGZGenerator.h
+++ b/Source/CPack/cmCPackSTGZGenerator.h
@@ -32,8 +32,7 @@ public:
   virtual ~cmCPackSTGZGenerator();
 
 protected:
-  int CompressFiles(const char* outFileName, const char* toplevel,
-    const std::vector<std::string>& files);
+  int PackageFiles();
   virtual int InitializeInternal();
   int GenerateHeader(std::ostream* os);
   virtual const char* GetOutputExtension() { return ".sh"; }