CPack Authorize DISPLAY_NAME usage in component package

Second (last) part fix of feature request #11814

Source/CPack/cmCPackArchiveGenerator.cxx

@@ -121,9 +121,11 @@ int cmCPackArchiveGenerator::PackageComponents(bool ignoreGroup)
           << std::endl);
       // Begin the archive for this group
       std::string packageFileName= std::string(toplevel);
-      packageFileName += "/"
-        +std::string(this->GetOption("CPACK_PACKAGE_FILE_NAME"))
-        +"-"+compGIt->first + this->GetOutputExtension();
+      packageFileName += "/"+
+       GetComponentPackageFileName(this->GetOption("CPACK_PACKAGE_FILE_NAME"),
+                                   compGIt->first,
+                                   true)
+         + this->GetOutputExtension();
       // open a block in order to automatically close archive
       // at the end of the block
       {
@@ -154,9 +156,11 @@ int cmCPackArchiveGenerator::PackageComponents(bool ignoreGroup)
       std::string packageFileName = std::string(toplevel);
 
       localToplevel += "/"+ compIt->first;
-      packageFileName += "/"
-        +std::string(this->GetOption("CPACK_PACKAGE_FILE_NAME"))
-        +"-"+compIt->first + this->GetOutputExtension();
+      packageFileName += "/"+
+       GetComponentPackageFileName(this->GetOption("CPACK_PACKAGE_FILE_NAME"),
+                                   compIt->first,
+                                   false)
+        + this->GetOutputExtension();
       {
         DECLARE_AND_OPEN_ARCHIVE(packageFileName,archive);
         // Add the files of this component to the archive

Source/CPack/cmCPackGenerator.cxx

@@ -1309,10 +1309,51 @@ int cmCPackGenerator::PrepareGroupingKind()
   return 1;
 }
 
+//----------------------------------------------------------------------
 std::string cmCPackGenerator::GetComponentInstallDirNameSuffix(
     const std::string& componentName) {
   return componentName;
 }
+//----------------------------------------------------------------------
+std::string cmCPackGenerator::GetComponentPackageFileName(
+    const std::string& initialPackageFileName,
+    const std::string& groupOrComponentName,
+    bool isGroupName) {
+
+  /*
+   * the default behavior is to use the
+   * component [group] name as a suffix
+   */
+  std::string suffix="-"+groupOrComponentName;
+  /* check if we should use DISPLAY name */
+  std::string dispNameVar = "CPACK_"+Name+"_USE_DISPLAY_NAME_IN_FILENAME";
+  if (IsOn(dispNameVar.c_str()))
+    {
+    /* the component Group case */
+    if (isGroupName)
+      {
+      std::string groupDispVar = "CPACK_COMPONENT_GROUP_"
+          + cmSystemTools::UpperCase(groupOrComponentName) + "_DISPLAY_NAME";
+      const char* groupDispName = GetOption(groupDispVar.c_str());
+      if (groupDispName)
+        {
+        suffix = "-"+std::string(groupDispName);
+        }
+      }
+    /* the [single] component case */
+    else
+      {
+      std::string dispVar = "CPACK_COMPONENT_"
+                + cmSystemTools::UpperCase(groupOrComponentName) + "_DISPLAY_NAME";
+            const char* dispName = GetOption(dispVar.c_str());
+            if(dispName)
+              {
+              suffix = "-"+std::string(dispName);
+              }
+            }
+      }
+  return initialPackageFileName + suffix;
+}
 
 //----------------------------------------------------------------------
 bool cmCPackGenerator::SupportsComponentInstallation() const

Source/CPack/cmCPackGenerator.h

@@ -144,6 +144,19 @@ protected:
   virtual std::string GetComponentInstallDirNameSuffix(
       const std::string& componentName);
 
+  /**
+   * CPack specific generator may mangle CPACK_PACKAGE_FILE_NAME
+   * with CPACK_COMPONENT_xxxx_<NAME>_DISPLAY_NAME if
+   * CPACK_<GEN>_USE_DISPLAY_NAME_IN_FILENAME is ON.
+   * @param[in] initialPackageFileName
+   * @param[in] groupOrComponentName
+   * @param[in] isGroupName
+   */
+  virtual std::string GetComponentPackageFileName(
+      const std::string& initialPackageFileName,
+      const std::string& groupOrComponentName,
+      bool isGroupName);
+
   /**
    * Package the list of files and/or components which
    * has been prepared by the beginning of DoPackage.

Source/CPack/cmCPackRPMGenerator.cxx

@@ -60,8 +60,10 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
           cmSystemTools::GetParentDirectory(toplevel.c_str())
                                  );
       std::string outputFileName(
-          std::string(this->GetOption("CPACK_PACKAGE_FILE_NAME"))
-          +"-"+compGIt->first + this->GetOutputExtension()
+       GetComponentPackageFileName(this->GetOption("CPACK_PACKAGE_FILE_NAME"),
+                                   compGIt->first,
+                                   true)
+                                   + this->GetOutputExtension()
                                 );
 
       localToplevel += "/"+ compGIt->first;
@@ -98,9 +100,10 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
           cmSystemTools::GetParentDirectory(toplevel.c_str())
                                  );
       std::string outputFileName(
-          std::string(this->GetOption("CPACK_PACKAGE_FILE_NAME")
-                                )
-        +"-"+compIt->first + this->GetOutputExtension());
+       GetComponentPackageFileName(this->GetOption("CPACK_PACKAGE_FILE_NAME"),
+                                   compIt->first,
+                                   false)
+       + this->GetOutputExtension());
 
       localToplevel += "/"+ compIt->first;
       /* replace the TEMP DIRECTORY with the component one */