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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:
+#
+# include(KDEClangFormat)
+# file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES src/*.cpp src/*.h)
+# kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})
+#
+# Since 5.64
+
+#=============================================================================
+# Copyright 2019 Christoph Cullmann <cullmann@kde.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+# derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# try to find clang-format in path
+find_program(KDE_CLANG_FORMAT_EXECUTABLE clang-format)
+
+# instantiate our clang-format file, must be in source directory for tooling if we have the tool
+if(KDE_CLANG_FORMAT_EXECUTABLE)
+ configure_file(${CMAKE_CURRENT_LIST_DIR}/clang-format.cmake ${CMAKE_CURRENT_SOURCE_DIR}/.clang-format @ONLY)
+endif()
+
+# formatting target
+function(KDE_CLANG_FORMAT)
+ # add target only if clang-format available
+ if(KDE_CLANG_FORMAT_EXECUTABLE)
+ add_custom_target(clang-format
+ COMMAND
+ ${KDE_CLANG_FORMAT_EXECUTABLE}
+ -style=file
+ -i
+ ${ARGV}
+ WORKING_DIRECTORY
+ ${CMAKE_CURRENT_SOURCE_DIR}
+ COMMENT
+ "Formatting sources in ${CMAKE_CURRENT_SOURCE_DIR} with ${KDE_CLANG_FORMAT_EXECUTABLE}..."
+ )
+ else()
+ add_custom_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()