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#!/usr/bin/env bash
#=============================================================================
# Copyright 2015-2016 Kitware, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#=============================================================================
usage='usage: clang-format.bash [<options>] [--]
--help Print usage plus more detailed help.
--clang-format <tool> Use given clang-format tool.
--amend Filter files changed by HEAD.
--cached Filter files locally staged for commit.
--modified Filter files locally modified from HEAD.
--tracked Filter files tracked by Git.
'
help="$usage"'
Example to format locally modified files:
Utilities/Scripts/clang-format.bash --modified
Example to format locally modified files staged for commit:
Utilities/Scripts/clang-format.bash --cached
Example to format files modified by the most recent commit:
Utilities/Scripts/clang-format.bash --amend
Example to format all files:
Utilities/Scripts/clang-format.bash --tracked
Example to format the current topic:
git filter-branch \
--tree-filter "Utilities/Scripts/clang-format.bash --tracked" \
master..
'
die() {
echo "$@" 1>&2; exit 1
}
#-----------------------------------------------------------------------------
# Parse command-line arguments.
clang_format=''
mode=''
while test "$#" != 0; do
case "$1" in
--amend) mode="amend" ;;
--cached) mode="cached" ;;
--clang-format) shift; clang_format="$1" ;;
--help) echo "$help"; exit 0 ;;
--modified) mode="modified" ;;
--tracked) mode="tracked" ;;
--) shift ; break ;;
-*) die "$usage" ;;
*) break ;;
esac
shift
done
test "$#" = 0 || die "$usage"
# Find a default tool.
tools='
clang-format
clang-format-3.8
'
if test "x$clang_format" = "x"; then
for tool in $tools; do
if type -p "$tool" >/dev/null; then
clang_format="$tool"
break
fi
done
fi
# Verify that we have a tool.
if ! type -p "$clang_format" >/dev/null; then
echo "Unable to locate '$clang_format'"
exit 1
fi
# Select listing mode.
case "$mode" in
'') echo "$usage"; exit 0 ;;
amend) git_ls='git diff-tree --diff-filter=AM --name-only HEAD -r --no-commit-id' ;;
cached) git_ls='git diff-index --diff-filter=AM --name-only HEAD --cached' ;;
modified) git_ls='git diff-index --diff-filter=AM --name-only HEAD' ;;
tracked) git_ls='git ls-files' ;;
*) die "invalid mode: $mode" ;;
esac
# Filter sources to which our style should apply.
$git_ls -z -- '*.c' '*.cc' '*.cpp' '*.cxx' '*.h' '*.hh' '*.hpp' '*.hxx' |
# Exclude lexer/parser generator input and output.
egrep -z -v '^Source/cmCommandArgumentLexer\.' |
egrep -z -v '^Source/cmCommandArgumentParser(\.y|\.cxx|Tokens\.h)' |
egrep -z -v '^Source/cmDependsJavaLexer\.' |
egrep -z -v '^Source/cmDependsJavaParser(\.y|\.cxx|Tokens\.h)' |
egrep -z -v '^Source/cmExprLexer\.' |
egrep -z -v '^Source/cmExprParser(\.y|\.cxx|Tokens\.h)' |
egrep -z -v '^Source/cmFortranLexer\.' |
egrep -z -v '^Source/cmFortranParser(\.y|\.cxx|Tokens\.h)' |
egrep -z -v '^Source/cmListFileLexer(\.in\.l|\.c)' |
# Exclude third-party sources.
egrep -z -v '^Source/(cm_sha2|bindexplib)' |
egrep -z -v '^Source/(kwsys|CursesDialog/form)/' |
egrep -z -v '^Utilities/(KW|cm).*/' |
# Exclude reference content.
egrep -z -v '^Tests/Module/GenerateExportHeader/reference/' |
# Exclude manually-formatted sources (e.g. with long lines).
egrep -z -v '^Tests/PositionIndependentTargets/pic_test.h' |
# Exclude sources with encoding not suported by clang-format.
egrep -z -v '^Tests/RunCMake/CommandLine/cmake_depends/test_UTF-16LE.h' |
# Update sources in-place.
xargs -0 "$clang_format" -i
|
