Git match changes in commit #bash #shell

git-files-changes.sh

#!/usr/bin/env bash
set -e

# Usage:
#
#	bash ./scripts/git-files COMMIT_HASH
#

# Usage in script:
#
# if [ $(bash ./scripts/git-files-changes "${COMMIT_HASH}") -eq 0 ];
# 	then exit 0;
# fi

# Commit hash of commit to check
COMMIT_HASH=$1;

# Matches array
MATCHES=(
	"^comp(.*)\.(tsx|js|less)$"
	"^webpack(.*)\.js"
);

# Joins array of matches by pipe "|" char
PATTERN=$(echo "${MATCHES[@]}" | tr ' ' '|')

# returns match line count, 0 for no matches or N for number of mathed lines
git diff-tree --no-commit-id --name-only -r "${COMMIT_HASH}" | grep -c -E "$PATTERN" | xargs