From 56bc45ce4d07a7a9a415e9dc8ad2f7c3f3c9e48d Mon Sep 17 00:00:00 2001
From: fiaxh <git@mx.ax.lt>
Date: Thu, 2 Mar 2017 15:37:32 +0100
Subject: Initial commit

---
 cmake/GenerateGXML.cmake | 124 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 cmake/GenerateGXML.cmake

(limited to 'cmake/GenerateGXML.cmake')

diff --git a/cmake/GenerateGXML.cmake b/cmake/GenerateGXML.cmake
new file mode 100644
index 00000000..4be96041
--- /dev/null
+++ b/cmake/GenerateGXML.cmake
@@ -0,0 +1,124 @@
+include(CMakeParseArguments)
+
+# Generates the resource XML controlling file from resource list (and saves it
+# to xml_path). It's not recommended to use this function directly, since it
+# doesn't handle invalid arguments. It is used by the function
+# COMPILE_GRESOURCES() to create a custom command, so that this function is
+# invoked at build-time in script mode from CMake.
+function(GENERATE_GXML xml_path)
+    # Available options:
+    # COMPRESS_ALL, NO_COMPRESS_ALL       Overrides the COMPRESS flag in all
+    #                                     registered resources.
+    # STRIPBLANKS_ALL, NO_STRIPBLANKS_ALL Overrides the STRIPBLANKS flag in all
+    #                                     registered resources.
+    # TOPIXDATA_ALL, NO_TOPIXDATA_ALL     Overrides the TOPIXDATA flag in all
+    #                                     registered resources.
+    set(GXML_OPTIONS COMPRESS_ALL NO_COMPRESS_ALL
+                     STRIPBLANKS_ALL NO_STRIPBLANKS_ALL
+                     TOPIXDATA_ALL NO_TOPIXDATA_ALL)
+
+    # Available one value options:
+    # PREFIX     Overrides the resource prefix that is prepended to each
+    #            relative file name in registered resources.
+    set(GXML_ONEVALUEARGS PREFIX)
+
+    # Available multi-value options:
+    # RESOURCES The list of resource files. Whether absolute or relative path is
+    #           equal, absolute paths are stripped down to relative ones. If the
+    #           absolute path is not inside the given base directory SOURCE_DIR
+    #           or CMAKE_SOURCE_DIR (if SOURCE_DIR is not overriden), this
+    #           function aborts.
+    set(GXML_MULTIVALUEARGS RESOURCES)
+
+    # Parse the arguments.
+    cmake_parse_arguments(GXML_ARG
+                          "${GXML_OPTIONS}"
+                          "${GXML_ONEVALUEARGS}"
+                          "${GXML_MULTIVALUEARGS}"
+                          "${ARGN}")
+
+    # Variable to store the double-quote (") string. Since escaping
+    # double-quotes in strings is not possible we need a helper variable that
+    # does this job for us.
+    set(Q \")
+
+    # Process resources and generate XML file.
+    # Begin with the XML header and header nodes.
+    set(GXML_XML_FILE "<?xml version=${Q}1.0${Q} encoding=${Q}UTF-8${Q}?>")
+    set(GXML_XML_FILE "${GXML_XML_FILE}<gresources><gresource prefix=${Q}")
+
+    # Set the prefix for the resources. Depending on the user-override we choose
+    # the standard prefix "/" or the override.
+    if (GXML_ARG_PREFIX)
+        set(GXML_XML_FILE "${GXML_XML_FILE}${GXML_ARG_PREFIX}")
+    else()
+        set(GXML_XML_FILE "${GXML_XML_FILE}/")
+    endif()
+
+    set(GXML_XML_FILE "${GXML_XML_FILE}${Q}>")
+
+    # Process each resource.
+    foreach(res ${GXML_ARG_RESOURCES})
+        if ("${res}" STREQUAL "COMPRESS")
+            set(GXML_COMPRESSION_FLAG ON)
+        elseif ("${res}" STREQUAL "STRIPBLANKS")
+            set(GXML_STRIPBLANKS_FLAG ON)
+        elseif ("${res}" STREQUAL "TOPIXDATA")
+            set(GXML_TOPIXDATA_FLAG ON)
+        else()
+            # The file name.
+            set(GXML_RESOURCE_PATH "${res}")
+
+            # Append to real resource file dependency list.
+            list(APPEND GXML_RESOURCES_DEPENDENCIES ${GXML_RESOURCE_PATH})
+
+            # Assemble <file> node.
+            set(GXML_RES_LINE "<file")
+            if ((GXML_ARG_COMPRESS_ALL OR GXML_COMPRESSION_FLAG) AND NOT
+                    GXML_ARG_NO_COMPRESS_ALL)
+                set(GXML_RES_LINE "${GXML_RES_LINE} compressed=${Q}true${Q}")
+            endif()
+
+            # Check preprocess flag validity.
+            if ((GXML_ARG_STRIPBLANKS_ALL OR GXML_STRIPBLANKS_FLAG) AND
+                    (GXML_ARG_TOPIXDATA_ALL OR GXML_TOPIXDATA_FLAG))
+                set(GXML_ERRMSG "Resource preprocessing option conflict. Tried")
+                set(GXML_ERRMSG "${GXML_ERRMSG} to specify both, STRIPBLANKS")
+                set(GXML_ERRMSG "${GXML_ERRMSG} and TOPIXDATA. In resource")
+                set(GXML_ERRMSG "${GXML_ERRMSG} ${GXML_RESOURCE_PATH} in")
+                set(GXML_ERRMSG "${GXML_ERRMSG} function COMPILE_GRESOURCES.")
+                message(FATAL_ERROR ${GXML_ERRMSG})
+            endif()
+
+            if ((GXML_ARG_STRIPBLANKS_ALL OR GXML_STRIPBLANKS_FLAG) AND NOT
+                    GXML_ARG_NO_STRIPBLANKS_ALL)
+                set(GXML_RES_LINE "${GXML_RES_LINE} preprocess=")
+                set(GXML_RES_LINE "${GXML_RES_LINE}${Q}xml-stripblanks${Q}")
+            elseif((GXML_ARG_TOPIXDATA_ALL OR GXML_TOPIXDATA_FLAG) AND NOT
+                       GXML_ARG_NO_TOPIXDATA_ALL)
+                set(GXML_RES_LINE "${GXML_RES_LINE} preprocess=")
+                set(GXML_RES_LINE "${GXML_RES_LINE}${Q}to-pixdata${Q}")
+            endif()
+
+            set(GXML_RES_LINE "${GXML_RES_LINE}>${GXML_RESOURCE_PATH}</file>")
+
+            # Append to file string.
+            set(GXML_XML_FILE "${GXML_XML_FILE}${GXML_RES_LINE}")
+
+            # Unset variables.
+            unset(GXML_COMPRESSION_FLAG)
+            unset(GXML_STRIPBLANKS_FLAG)
+            unset(GXML_TOPIXDATA_FLAG)
+        endif()
+
+    endforeach()
+
+    # Append closing nodes.
+    set(GXML_XML_FILE "${GXML_XML_FILE}</gresource></gresources>")
+
+    # Use "file" function to generate XML controlling file.
+    get_filename_component(xml_path_only_name "${xml_path}" NAME)
+    file(WRITE ${xml_path} ${GXML_XML_FILE})
+
+endfunction()
+
-- 
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