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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_CURRENT_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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