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utils: sync grass_clang_format script to pre-commit config #4186

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merged 1 commit into from
Aug 15, 2024
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utils: sync grass_clang_format script to pre-commit config #4186

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26 changes: 24 additions & 2 deletions utils/grass_clang_format.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -22,16 +22,27 @@ set -eu
# It is also possible to format the content in a (one) given directory:
# ./utils/grass_clang_format.sh ./lib/raster
#
# COPYRIGHT: (C) 2023 by the GRASS Development Team
# COPYRIGHT: (C) 2023-2024 by the GRASS Development Team
#
# This program is free software under the GNU General Public
# License (>=v2). Read the file COPYING that comes with GRASS
# for details.
#
###############################################################################

# Check if variable is integer (POSIX compliant)
# based on https://unix.stackexchange.com/a/598047
is_integer ()
{
case "${1#[+-]}" in
(*[!0123456789]*) echo 1 ;;
('') echo 1 ;;
(*) echo 0 ;;
esac
}

# Required clang-format version
req_cf_v="15"
req_cf_v="18"

# No need to continue if the .clang-format file isn't found
if [ ! -f .clang-format ]; then
Expand All @@ -52,6 +63,17 @@ if ! (${fmt} --version >/dev/null); then
exit 1
fi

# Try extract ClangFormat version from pre-commit config file
pre_commit_config_file=".pre-commit-config.yaml"
pre_commit_version=$(grep -A 1 --regex "repo:.*clang-format" \
"${pre_commit_config_file}" | sed -En 's/.*rev: v([0-9]+)\..*/\1/p')
if [ "$(is_integer "$pre_commit_version")" -eq "1" ]; then
echo "Warning: failed to retrieve ClangFormat version number from"
echo " ${pre_commit_config_file}. Falling back to version {$req_cf_v}."
else
req_cf_v="${pre_commit_version}"
fi

clang_version_full=$(${fmt} --version)
clang_version=$(echo "${clang_version_full}" | \
sed -En 's/.*version ([0-9]+)\.[0-9]+\.[0-9]+.*/\1/p')
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