[grepPattern.sh] sh script to catch pattern in staged file #bash #git

grepPattern.sh

#!/bin/sh

# this script will look into current staged (about to be commited) files
# searching for the pattern from $1
# if found, would exit with error status code 1

# Usage:
# when staged files contain the search pattern 'TEST'
#
# > ./grepPattern.sh TEST
#
# will exit with 1

# you can add more ignore patterns by editing the ignorePattern variable
# for example:
# ignorePattern='package|again|anotherThing'

ignorePattern='package.json|hookScripts'

# in staged flies
# find (M)odified and (A)dded file names,
# find those DOES NOT conotain $ignorePattern
toSearch=$(git diff --name-status --cached | grep -E "^[M|A]" | awk '{print $2}' | grep -E -v $ignorePattern)

if [ -z "$toSearch" ]; then
  echo "no file to check pattern '${1}'."
  exit 0
fi

if echo $toSearch | xargs grep -n -r --include "*.js" $1; then
  echo ""
  echo "please remove '${1}' in these lines."
  echo "this is really easy to fix, please don't try to bypass in git hooks."
  echo ""
  exit 1
fi