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#!/bin/sh
set -eu
# Check if 'go generate' needs to be run.
# TODO: see if we can only run this against the Unicode version native to
# the installed version of Go since that takes around ~40ms compared to
# ~450ms when we have to generate all the tables for the non-native version.
FILES='^(tables_\w+\.go|internal/gen/gentables/main\.go|)$'
ERROR=Error
if [ -t 1 ]; then
ERROR='\033[0;31mError\033[0m' # red
fi
if git rev-parse --verify HEAD >/dev/null 2>&1; then
against=HEAD
else
# Initial commit: diff against an empty tree object
against=$(git hash-object -t tree /dev/null)
fi
# Redirect output to stderr.
exec 1>&2
if git diff --cached --name-only --diff-filter=M -z "${against}" |
\grep --null --quiet --extended-regexp "${FILES}"; then
# Project root
root="$(git rev-parse --show-toplevel)"
exit_code=0
[ -d "${root}/bin" ] || mkdir -p "${root}/bin"
GOBIN="${root}/bin" go install "${root}/gen.go"
if ! "${root}/bin/gen" -dry-run >/dev/null 2>&1; then
echo "${ERROR}: Cannot commit changes without re-running \`go generate\`."
echo ''
echo 'This will cause failures in CI.'
echo ''
echo "Output of \`go run ${root}/bin/gen -dry-run\`:"
echo ''
echo '################################################################################'
"${root}/bin/gen" -dry-run || true
echo '################################################################################'
exit_code=1
fi
# Make sure changes to generation code and the .tables.json are coordinated.
if ! git diff --cached --name-only --diff-filter=M -z "${against}" |
\grep --null --quiet --extended-regexp '^\.tables\.json$'; then
if [ $exit_code -ne 0 ]; then
echo '' # Add a new line to separate this error from the prior one
fi
echo "${ERROR}: please stage your changes to \".tables.json\""
echo ''
echo 'The ".tables.json" file is used by "gen.go" to determine'
echo 'when the Unicode tables need to be updated and they should'
echo 'always be committed together.'
echo ''
exit_code=1
fi
exit $exit_code
fi
|
