forked from OSchip/llvm-project
69 lines
2.3 KiB
Bash
Executable File
69 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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set -euo pipefail
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# "script-and-regex.regex": "/^(?P<severity>.*?)\n(?P<message>.*?)\n(?P<line>\\d),(?P<char>\\d)(\n(?P<original>.*?)>>>>\n(?P<replacement>.*?)<<<<?)$/s",
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# Arcanist linter that invokes clang-format via clang/tools/clang-format/clang-format-diff.py
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# stdout from this script is parsed into a regex and used by Arcanist.
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# https://secure.phabricator.com/book/phabricator/article/arcanist_lint_script_and_regex/
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# To skip running all linters when creating/updating a diff, use `arc diff --nolint`.
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# advice severity level is completely non-disruptive.
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# switch to warning or error if you want to prompt the user.
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if ! hash clang-format >/dev/null; then
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echo "advice"
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echo "clang-format not found in user’s local PATH; not linting file."
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echo "===="
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exit 0
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fi
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if ! git rev-parse --git-dir >/dev/null; then
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echo "advice"
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echo "not in git repostitory; not linting file."
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echo "===="
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exit 0
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fi
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src_file="${1}"
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original_file="$(mktemp)"
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formatted_file="$(mktemp)"
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readonly src_file
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readonly original_file
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readonly formatted_file
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cp -p "${src_file}" "${original_file}"
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cp -p "${src_file}" "${formatted_file}"
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cleanup() {
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rc=$?
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rm "${formatted_file}" "${original_file}"
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exit ${rc}
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}
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trap 'cleanup' INT HUP QUIT TERM EXIT
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# Arcanist can filter out lint messages for unchanged lines, but for that, we
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# need to generate line by line lint messages. Instead, we generate one lint
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# message on line 1, char 1 with file content edited using clang-format-diff.py
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#
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# We do not use git-clang-format because it wants to modify the index,
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# and arc is already holding the lock.
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#
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# We do not look for clang-format-diff or clang-format-diff.py in the PATH
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# because whether/how these are installed differs between distributions,
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# and we have an executable copy in the tree anyway.
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arc_base_commit=$(arc which --show-base)
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git diff-index -U0 "${arc_base_commit}" "${src_file}" \
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| clang/tools/clang-format/clang-format-diff.py -style file -i -p1
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cp -p "${src_file}" "${formatted_file}"
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cp -p "${original_file}" "${src_file}"
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if ! diff -q "${src_file}" "${formatted_file}" > /dev/null ; then
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echo "autofix"
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echo "clang-format suggested style edits found:"
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echo "1,1" # line,char of start of replacement.
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cat "${src_file}"
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echo ">>>>"
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cat "${formatted_file}"
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echo "<<<<"
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fi
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