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#.rst:
# KDEClangFormat
# --------------------
#
# This module provides a functionality to format the source
# code of your repository according to a predefined KDE
# clang-format file.
#
# This module provides the following function:
#
# ::
#
# kde_clang_format(<files>)
#
# Using this function will create a clang-format target that will format all
# ``<files>`` passed to the function with the predefined KDE clang-format style.
#
# Example usage:
#
# .. code-block:: cmake
#
# include(KDEClangFormat)
# file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES src/*.cpp src/*.h)
# kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})
#
# Since 5.64
#=============================================================================
# SPDX-FileCopyrightText: 2019 Christoph Cullmann <cullmann@kde.org>
#
# SPDX-License-Identifier: BSD-3-Clause
# try to find clang-format in path
find_program(KDE_CLANG_FORMAT_EXECUTABLE clang-format)
# instantiate our clang-format file, must be in source directory for tooling if we have the tool
if(KDE_CLANG_FORMAT_EXECUTABLE)
configure_file(${CMAKE_CURRENT_LIST_DIR}/clang-format.cmake ${CMAKE_CURRENT_SOURCE_DIR}/.clang-format @ONLY)
endif()
# formatting target
function(KDE_CLANG_FORMAT)
# add target without specific commands first, we add the real calls file-per-file to avoid command line length issues
add_custom_target(clang-format COMMENT "Formatting sources in ${CMAKE_CURRENT_SOURCE_DIR} with ${KDE_CLANG_FORMAT_EXECUTABLE}...")
# run clang-format only if available, else signal the user what is missing
if(KDE_CLANG_FORMAT_EXECUTABLE)
get_filename_component(_binary_dir ${CMAKE_BINARY_DIR} REALPATH)
foreach(_file ${ARGV})
# check if the file is inside the build directory => ignore such files
get_filename_component(_full_file_path ${_file} REALPATH)
string(FIND ${_full_file_path} ${_binary_dir} _index)
if(NOT _index EQUAL 0)
add_custom_command(TARGET clang-format
COMMAND
${KDE_CLANG_FORMAT_EXECUTABLE}
-style=file
-i
${_full_file_path}
WORKING_DIRECTORY
${CMAKE_CURRENT_SOURCE_DIR}
COMMENT
"Formatting ${_full_file_path}..."
)
endif()
endforeach()
else()
add_custom_command(TARGET clang-format
COMMAND
${CMAKE_COMMAND} -E echo "Could not set up the clang-format target as the clang-format executable is missing."
)
endif()
endfunction()
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