forked-synapse/scripts-dev/lint.sh
Quentin Gliech d4c4798a25
Use interpreter from $PATH instead of absolute paths in various scripts using /usr/bin/env (#9689)
On NixOS, `bash` isn't under `/bin/bash` but rather in some directory in `$PATH`. Locally, I've been patching those scripts to make them work.

`/usr/bin/env` seems to be the only [portable way](https://unix.stackexchange.com/questions/29608/why-is-it-better-to-use-usr-bin-env-name-instead-of-path-to-name-as-my) to use binaries from the PATH as interpreters.

Signed-off-by: Quentin Gliech <quentingliech@gmail.com>
2021-03-25 16:53:54 +00:00

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#!/usr/bin/env bash
#
# Runs linting scripts over the local Synapse checkout
# isort - sorts import statements
# black - opinionated code formatter
# flake8 - lints and finds mistakes
set -e
usage() {
echo
echo "Usage: $0 [-h] [-d] [paths...]"
echo
echo "-d"
echo " Lint files that have changed since the last git commit."
echo
echo " If paths are provided and this option is set, both provided paths and those"
echo " that have changed since the last commit will be linted."
echo
echo " If no paths are provided and this option is not set, all files will be linted."
echo
echo " Note that paths with a file extension that is not '.py' will be excluded."
echo "-h"
echo " Display this help text."
}
USING_DIFF=0
files=()
while getopts ":dh" opt; do
case $opt in
d)
USING_DIFF=1
;;
h)
usage
exit
;;
\?)
echo "ERROR: Invalid option: -$OPTARG" >&2
usage
exit
;;
esac
done
# Strip any options from the command line arguments now that
# we've finished processing them
shift "$((OPTIND-1))"
if [ $USING_DIFF -eq 1 ]; then
# Check both staged and non-staged changes
for path in $(git diff HEAD --name-only); do
filename=$(basename "$path")
file_extension="${filename##*.}"
# If an extension is present, and it's something other than 'py',
# then ignore this file
if [[ -n ${file_extension+x} && $file_extension != "py" ]]; then
continue
fi
# Append this path to our list of files to lint
files+=("$path")
done
fi
# Append any remaining arguments as files to lint
files+=("$@")
if [[ $USING_DIFF -eq 1 ]]; then
# If we were asked to lint changed files, and no paths were found as a result...
if [ ${#files[@]} -eq 0 ]; then
# Then print and exit
echo "No files found to lint."
exit 0
fi
else
# If we were not asked to lint changed files, and no paths were found as a result,
# then lint everything!
if [[ -z ${files+x} ]]; then
# Lint all source code files and directories
# Note: this list aims the mirror the one in tox.ini
files=("synapse" "docker" "tests" "scripts-dev" "scripts" "contrib" "synctl" "setup.py" "synmark" "stubs" ".buildkite")
fi
fi
echo "Linting these paths: ${files[*]}"
echo
# Print out the commands being run
set -x
isort "${files[@]}"
python3 -m black "${files[@]}"
./scripts-dev/config-lint.sh
flake8 "${files[@]}"
mypy