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123 lines
3.5 KiB
123 lines
3.5 KiB
#!/usr/bin/env bash
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#=============================================================================
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# Copyright 2015-2017 Kitware, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#=============================================================================
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usage='usage: clang-format.bash [<options>] [--]
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--help Print usage plus more detailed help.
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--clang-format <tool> Use given clang-format tool.
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--amend Filter files changed by HEAD.
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--cached Filter files locally staged for commit.
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--modified Filter files locally modified from HEAD.
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--tracked Filter files tracked by Git.
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'
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help="$usage"'
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Example to format locally modified files:
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Utilities/Scripts/clang-format.bash --modified
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Example to format locally modified files staged for commit:
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Utilities/Scripts/clang-format.bash --cached
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Example to format files modified by the most recent commit:
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Utilities/Scripts/clang-format.bash --amend
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Example to format all files tracked by Git:
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Utilities/Scripts/clang-format.bash --tracked
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Example to format the current topic:
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git filter-branch \
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--tree-filter "Utilities/Scripts/clang-format.bash --tracked" \
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master..
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'
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die() {
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echo "$@" 1>&2; exit 1
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}
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#-----------------------------------------------------------------------------
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# Parse command-line arguments.
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clang_format=''
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mode=''
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while test "$#" != 0; do
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case "$1" in
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--amend) mode="amend" ;;
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--cached) mode="cached" ;;
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--clang-format) shift; clang_format="$1" ;;
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--help) echo "$help"; exit 0 ;;
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--modified) mode="modified" ;;
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--tracked) mode="tracked" ;;
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--) shift ; break ;;
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-*) die "$usage" ;;
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*) break ;;
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esac
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shift
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done
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test "$#" = 0 || die "$usage"
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# Find a default tool.
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tools='
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clang-format-15
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clang-format
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'
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if test "x$clang_format" = "x"; then
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for tool in $tools; do
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if type -p "$tool" >/dev/null; then
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clang_format="$tool"
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break
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fi
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done
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fi
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# Verify that we have a tool.
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if ! type -p "$clang_format" >/dev/null; then
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echo "Unable to locate a 'clang-format' tool."
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exit 1
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fi
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if ! "$clang_format" --version | grep 'clang-format version 15' >/dev/null 2>/dev/null; then
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echo "clang-format version 15 is required (exactly)"
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exit 1
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fi
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# Select listing mode.
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case "$mode" in
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'') echo "$usage"; exit 0 ;;
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amend) git_ls='git diff-tree --diff-filter=AM --name-only HEAD -r --no-commit-id' ;;
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cached) git_ls='git diff-index --diff-filter=AM --name-only HEAD --cached' ;;
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modified) git_ls='git diff-index --diff-filter=AM --name-only HEAD' ;;
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tracked) git_ls='git ls-files' ;;
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*) die "invalid mode: $mode" ;;
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esac
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# List files as selected above.
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$git_ls |
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# Select sources with our attribute.
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git check-attr --stdin format.clang-format |
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sed -n '/: format\.clang-format: \(set\|15\)$/ {s/:[^:]*:[^:]*$//p}' |
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# Update sources in-place.
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xargs -d '\n' "$clang_format" -i
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