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#
# .rst: FindClangFormat
# ---------------
#
# The module defines the following variables
#
# ``CLANGFORMAT_EXECUTABLE`` Path to clang-format executable
# ``CLANGFORMAT_FOUND`` True if the clang-format executable was found.
# ``CLANGFORMAT_VERSION`` The version of clang-format found
#
# Example usage:
#
# .. code-block:: cmake
#
# find_package(ClangFormat)
# if(CLANGFORMAT_FOUND)
# message("clang-format executable found: ${CLANGFORMAT_EXECUTABLE}\n" "version: ${CLANGFORMAT_VERSION}")
# endif()
include(FindPackageHandleStandardArgs)
function(_ClangFormat_get_version clangformat_version result_var clangformat_path)
execute_process(
COMMAND "${clangformat_path}" --version
OUTPUT_VARIABLE full_clangformat_version
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE version_result
)
# full_clangformat_version sample: "clang-format version 3.9.1-4ubuntu3~16.04.1 (tags/RELEASE_391/rc2)"
# clean clangformat_version sample: "3.9.1"
string(REGEX
REPLACE "[^0-9]*([.0-9]+).*"
"\\1"
clean_clangformat_version
"${full_clangformat_version}")
set(${result_var} ${version_result} PARENT_SCOPE)
set(${clangformat_version} ${clean_clangformat_version} PARENT_SCOPE)
endfunction()
function(_ClangFromat_version_validator version_match clangformat_path)
if(NOT DEFINED ClangFormat_FIND_VERSION)
set(${is_valid_version} TRUE PARENT_SCOPE)
else()
_ClangFormat_get_version(candidate_version version_result "${clangformat_path}")
if(version_result)
message(DEBUG "Unable to determine candidate clang-format version at ${clangformat_path}: ${version_result}")
endif()
find_package_check_version("${candidate_version}" valid_clangformat_version
HANDLE_VERSION_RANGE
)
set(${version_match} "${valid_clangformat_version}" PARENT_SCOPE)
endif()
endfunction()
find_program(CLANGFORMAT_EXECUTABLE
NAMES clang-format
clang-format-16
clang-format-15
clang-format-14
clang-format-13
clang-format-12
clang-format-11
clang-format-10
DOC "clang-format executable"
VALIDATOR _ClangFromat_version_validator
)
mark_as_advanced(CLANGFORMAT_EXECUTABLE)
if(CLANGFORMAT_EXECUTABLE)
_ClangFormat_get_version(CLANGFORMAT_VERSION _Clangformat_version_result "${CLANGFORMAT_EXECUTABLE}")
if(_Clangformat_version_result)
set(CLANGFORMAT_FOUND FALSE)
message(WARNING "Unable to determine clang-format version: ${_Clangformat_version_result}")
else()
set(CLANGFORMAT_FOUND TRUE)
endif()
endif()
find_package_handle_standard_args(ClangFormat
FOUND_VAR CLANGFORMAT_FOUND
REQUIRED_VARS
CLANGFORMAT_EXECUTABLE
CLANGFORMAT_VERSION
VERSION_VAR CLANGFORMAT_VERSION
)
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