From 096591b96a0fb8cac2b330bc727c96ff90fa8d97 Mon Sep 17 00:00:00 2001
From: Nils Gladitz <nilsgladitz@gmail.com>
Date: Sun, 10 Nov 2013 19:48:29 +0100
Subject: CPackWiX: Add variables for custom tool extensions and flags

---
 Modules/CPackWIX.cmake                   | 24 ++++++++++-
 Source/CPack/WiX/cmCPackWIXGenerator.cxx | 69 +++++++++++++++++++++++++++++---
 Source/CPack/WiX/cmCPackWIXGenerator.h   | 10 +++++
 3 files changed, 96 insertions(+), 7 deletions(-)

diff --git a/Modules/CPackWIX.cmake b/Modules/CPackWIX.cmake
index f4fcf6a..3f0978d 100644
--- a/Modules/CPackWIX.cmake
+++ b/Modules/CPackWIX.cmake
@@ -123,9 +123,31 @@
 #  This variable provides an optional list of extra WiX object (.wixobj)
 #  and/or WiX library (.wixlib) files.  The full path to objects and libraries
 #  is required.
+#
+# .. variable:: CPACK_WIX_EXTENSIONS
+#
+#  This variable provides a list of additional extensions for the WiX
+#  tools light and candle.
+#
+# .. variable:: CPACK_WIX_<TOOL>_EXTENSIONS
+#
+#  This is the tool specific version of CPACK_WIX_EXTENSIONS.
+#  ``<TOOL>`` can be either LIGHT or CANDLE.
+#
+# .. variable:: CPACK_WIX_<TOOL>_EXTRA_FLAGS
+#
+#  This list variable allows you to pass additional
+#  flags to the WiX tool ``<TOOL>``.
+#
+#  Use it at your own risk.
+#  Future versions of CPack may generate flags which may be in conflict
+#  with your own flags.
+#
+#  ``<TOOL>`` can be either LIGHT or CANDLE.
+#
 
 #=============================================================================
-# Copyright 2012 Kitware, Inc.
+# Copyright 2013 Kitware, Inc.
 #
 # Distributed under the OSI-approved BSD License (the "License");
 # see accompanying file Copyright.txt for details.
diff --git a/Source/CPack/WiX/cmCPackWIXGenerator.cxx b/Source/CPack/WiX/cmCPackWIXGenerator.cxx
index 448d8d1..1d7681b 100644
--- a/Source/CPack/WiX/cmCPackWIXGenerator.cxx
+++ b/Source/CPack/WiX/cmCPackWIXGenerator.cxx
@@ -83,6 +83,15 @@ bool cmCPackWIXGenerator::RunCandleCommand(
   command << " -nologo";
   command << " -arch " << GetArchitecture();
   command << " -out " << QuotePath(objectFile);
+
+  for(extension_set_t::const_iterator i = candleExtensions.begin();
+      i != candleExtensions.end(); ++i)
+    {
+    command << " -ext " << QuotePath(*i);
+    }
+
+  AddCustomFlags("CPACK_WIX_CANDLE_EXTRA_FLAGS", command);
+
   command << " " << QuotePath(sourceFile);
 
   return RunWiXCommand(command.str());
@@ -100,12 +109,21 @@ bool cmCPackWIXGenerator::RunLightCommand(const std::string& objectFiles)
   command << QuotePath(executable);
   command << " -nologo";
   command << " -out " << QuotePath(packageFileNames.at(0));
-  command << " -ext WixUIExtension";
+
+  for(extension_set_t::const_iterator i = lightExtensions.begin();
+      i != lightExtensions.end(); ++i)
+    {
+    command << " -ext " << QuotePath(*i);
+    }
+
   const char* const cultures = GetOption("CPACK_WIX_CULTURES");
   if(cultures)
     {
     command << " -cultures:" << cultures;
     }
+
+  AddCustomFlags("CPACK_WIX_LIGHT_EXTRA_FLAGS", command);
+
   command << " " << objectFiles;
 
   return RunWiXCommand(command.str());
@@ -172,14 +190,21 @@ bool cmCPackWIXGenerator::InitializeWiXConfiguration()
 
   if(GetOption("CPACK_PACKAGE_VENDOR") == 0)
     {
-      std::string defaultVendor = "Humanity";
-      SetOption("CPACK_PACKAGE_VENDOR", defaultVendor.c_str());
+    std::string defaultVendor = "Humanity";
+    SetOption("CPACK_PACKAGE_VENDOR", defaultVendor.c_str());
 
-      cmCPackLogger(cmCPackLog::LOG_VERBOSE,
-        "CPACK_PACKAGE_VENDOR implicitly set to " << defaultVendor << " . "
-        << std::endl);
+    cmCPackLogger(cmCPackLog::LOG_VERBOSE,
+      "CPACK_PACKAGE_VENDOR implicitly set to " << defaultVendor << " . "
+      << std::endl);
     }
 
+  CollectExtensions("CPACK_WIX_EXTENSIONS", candleExtensions);
+  CollectExtensions("CPACK_WIX_CANDLE_EXTENSIONS", candleExtensions);
+
+  lightExtensions.insert("WixUIExtension");
+  CollectExtensions("CPACK_WIX_EXTENSIONS", lightExtensions);
+  CollectExtensions("CPACK_WIX_LIGHT_EXTENSIONS", lightExtensions);
+
   return true;
 }
 
@@ -865,3 +890,35 @@ bool cmCPackWIXGenerator::IsLegalIdCharacter(char c)
       (c >= 'A' && c <= 'Z') ||
       c == '_' || c == '.';
 }
+
+void cmCPackWIXGenerator::CollectExtensions(
+     const std::string& variableName, extension_set_t& extensions)
+{
+  const char *variableContent = GetOption(variableName.c_str());
+  if(!variableContent) return;
+
+  std::vector<std::string> list;
+  cmSystemTools::ExpandListArgument(variableContent, list);
+
+  for(std::vector<std::string>::const_iterator i = list.begin();
+    i != list.end(); ++i)
+    {
+    extensions.insert(*i);
+    }
+}
+
+void cmCPackWIXGenerator::AddCustomFlags(
+  const std::string& variableName, std::ostream& stream)
+{
+  const char *variableContent = GetOption(variableName.c_str());
+  if(!variableContent) return;
+
+  std::vector<std::string> list;
+  cmSystemTools::ExpandListArgument(variableContent, list);
+
+  for(std::vector<std::string>::const_iterator i = list.begin();
+    i != list.end(); ++i)
+    {
+      stream << " " << QuotePath(*i);
+    }
+}
diff --git a/Source/CPack/WiX/cmCPackWIXGenerator.h b/Source/CPack/WiX/cmCPackWIXGenerator.h
index c96ad5a..481a07d 100644
--- a/Source/CPack/WiX/cmCPackWIXGenerator.h
+++ b/Source/CPack/WiX/cmCPackWIXGenerator.h
@@ -63,6 +63,7 @@ private:
   typedef std::map<std::string, std::string> id_map_t;
   typedef std::map<std::string, size_t> ambiguity_map_t;
   typedef std::map<std::string, cmWIXShortcut> shortcut_map_t;
+  typedef std::set<std::string> extension_set_t;
 
   bool InitializeWiXConfiguration();
 
@@ -129,10 +130,19 @@ private:
 
   static bool IsLegalIdCharacter(char c);
 
+  void CollectExtensions(
+       const std::string& variableName, extension_set_t& extensions);
+
+  void AddCustomFlags(
+    const std::string& variableName, std::ostream& stream);
+
   std::vector<std::string> wixSources;
   id_map_t pathToIdMap;
   ambiguity_map_t idAmbiguityCounter;
   shortcut_map_t shortcutMap;
+
+  extension_set_t candleExtensions;
+  extension_set_t lightExtensions;
 };
 
 #endif
-- 
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