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#
# Provides a function COMPRESS_ZIP that is compatible with the function in FindZIP.cmake, but just copies the files to a folder
#
#
# Copyright © 2018-2024 pastdue ( https://github.com/past-due/ ) and contributors
# License: MIT License ( https://opensource.org/licenses/MIT )
#
# Script Version: 2025-07-23a
#
cmake_minimum_required(VERSION 3.16...3.31)
set(_THIS_MODULE_BASE_DIR "${CMAKE_CURRENT_LIST_DIR}")
# COMPRESS_ZIP(OUTPUT outputFile
# [COMPRESSION_LEVEL <0 | 1 | 3 | 5 | 7 | 9>]
# PATHS [files...] [WORKING_DIRECTORY dir]
# [PATHS [files...] [WORKING_DIRECTORY dir]]
# [DEPENDS [depends...]]
# [BUILD_ALWAYS_TARGET [target name]]
# [IGNORE_GIT]
# [QUIET])
#
# Compress a list of files / folders into a ZIP file, named <outputFile>.
# Any directories specified will cause the directory's contents to be recursively included.
#
# If COMPRESSION_LEVEL is specified, the ZIP compression level setting will be passed
# through to the ZIP_EXECUTABLE. A compression level of "0" means no compression.
#
# If WORKING_DIRECTORY is specified, the WORKING_DIRECTORY will be set for the execution of
# the ZIP_EXECUTABLE.
#
# Each set of PATHS may also optionally specify an associated WORKING_DIRECTORY.
#
# DEPENDS may be used to specify additional dependencies, which are appended to the
# auto-generated list of dependencies used for the internal call to `add_custom_command`.
#
# If BUILD_ALWAYS_TARGET is specified, uses add_custom_target to create a target that is always built.
#
# QUIET attempts to suppress (most) output from the ZIP_EXECUTABLE that is used.
# (This option may have no effect, if unsupported by the ZIP_EXECUTABLE.)
#
function(COMPRESS_ZIP)
set(_options ALL IGNORE_GIT QUIET)
set(_oneValueArgs OUTPUT COMPRESSION_LEVEL BUILD_ALWAYS_TARGET) #WORKING_DIRECTORY)
set(_multiValueArgs DEPENDS)
CMAKE_PARSE_ARGUMENTS(_parsedArguments "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
# Check that OUTPUT was provided
if(NOT _parsedArguments_OUTPUT)
message( FATAL_ERROR "Missing required OUTPUT parameter" )
endif()
# Check arguments "unparsed" by CMAKE_PARSE_ARGUMENTS for PATHS sets
set(_COMMAND_LIST)
set(_depends_PATHS)
set(_inPATHSet FALSE)
set(_expecting_WORKINGDIR FALSE)
unset(_currentPATHSet_PATHS)
unset(_currentPATHSet_WORKINGDIR)
foreach(currentArg ${_parsedArguments_UNPARSED_ARGUMENTS})
if("${currentArg}" STREQUAL "PATHS")
if(_expecting_WORKINGDIR)
# Provided "WORKING_DIRECTORY" keyword, but no variable after it
message( FATAL_ERROR "WORKING_DIRECTORY keyword provided, but missing variable afterwards" )
endif()
if(_inPATHSet AND DEFINED _currentPATHSet_PATHS)
# Ending one non-empty PATH set, beginning another
if(NOT DEFINED _currentPATHSet_WORKINGDIR)
set(_currentPATHSet_WORKINGDIR "${CMAKE_CURRENT_SOURCE_DIR}")
endif()
foreach (_path ${_currentPATHSet_PATHS})
list(APPEND _COMMAND_LIST
COMMAND
${CMAKE_COMMAND} -E chdir ${_currentPATHSet_WORKINGDIR}
${CMAKE_COMMAND} -DSOURCE=${_path} -DDEST_DIR=${_parsedArguments_OUTPUT} -P ${_THIS_MODULE_BASE_DIR}/EmscriptenCompressZipCopy.cmake
)
set(_dependPath "${_currentPATHSet_WORKINGDIR}/${_path}")
# list(APPEND _COMMAND_LIST
# COMMAND
# ${CMAKE_COMMAND} -DSOURCE=${_dependPath} -DDEST_DIR=${_parsedArguments_OUTPUT} -P ${_THIS_MODULE_BASE_DIR}/EmscriptenCompressZipCopy.cmake
# )
list(APPEND _depends_PATHS "${_dependPath}")
endforeach()
endif()
set(_inPATHSet TRUE)
unset(_currentPATHSet_PATHS)
unset(_currentPATHSet_WORKINGDIR)
elseif("${currentArg}" STREQUAL "WORKING_DIRECTORY")
if(NOT _inPATHSet)
message( FATAL_ERROR "WORKING_DIRECTORY must be specified at end of PATHS set" )
endif()
if(_expecting_WORKINGDIR)
message( FATAL_ERROR "Duplicate WORKING_DIRECTORY keyword" )
endif()
if(DEFINED _currentPATHSet_WORKINGDIR)
message( FATAL_ERROR "PATHS set has more than one WORKING_DIRECTORY keyword" )
endif()
set(_expecting_WORKINGDIR TRUE)
elseif(_expecting_WORKINGDIR)
set(_currentPATHSet_WORKINGDIR "${currentArg}")
set(_expecting_WORKINGDIR FALSE)
elseif(_inPATHSet)
# Treat argument as a PATH
list(APPEND _currentPATHSet_PATHS "${currentArg}")
else()
# Unexpected argument
message( FATAL_ERROR "Unexpected argument: ${currentArg}" )
endif()
endforeach()
if(_expecting_WORKINGDIR)
# Provided "WORKING_DIRECTORY" keyword, but no variable after it
message( FATAL_ERROR "WORKING_DIRECTORY keyword provided, but missing variable afterwards" )
endif()
if(_inPATHSet AND DEFINED _currentPATHSet_PATHS)
# Ending one non-empty PATH set
if(NOT DEFINED _currentPATHSet_WORKINGDIR)
set(_currentPATHSet_WORKINGDIR "${CMAKE_CURRENT_SOURCE_DIR}")
endif()
foreach (_path ${_currentPATHSet_PATHS})
set(_dependPath "${_currentPATHSet_WORKINGDIR}/${_path}")
list(APPEND _COMMAND_LIST
COMMAND
${CMAKE_COMMAND} -E chdir ${_currentPATHSet_WORKINGDIR}
${CMAKE_COMMAND} -DSOURCE=${_path} -DDEST_DIR=${_parsedArguments_OUTPUT} -P ${_THIS_MODULE_BASE_DIR}/EmscriptenCompressZipCopy.cmake
)
list(APPEND _depends_PATHS "${_dependPath}")
endforeach()
endif()
if(_parsedArguments_DEPENDS)
list(APPEND _depends_PATHS ${_parsedArguments_DEPENDS})
endif()
if(NOT _parsedArguments_BUILD_ALWAYS_TARGET)
add_custom_command(
OUTPUT "${_parsedArguments_OUTPUT}"
${_COMMAND_LIST}
DEPENDS ${_depends_PATHS}
WORKING_DIRECTORY "${_workingDirectory}"
VERBATIM
)
else()
add_custom_target(
${_parsedArguments_BUILD_ALWAYS_TARGET} ALL
${_COMMAND_LIST}
DEPENDS ${_depends_PATHS}
WORKING_DIRECTORY "${_workingDirectory}"
VERBATIM
)
endif()
endfunction()
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