Script to compare a git branch with a base branch, find the changed/added/removed CSS classes, and search the codebase for uses

changedCssClassSearch.sh

#!/bin/bash

# Changed CSS Class Search
# ------------------------
# Script to compare a git branch with a base branch, find the changed/added/removed CSS classes, and search the codebase for uses
#
# Required params:
#     --base - The base branch
#     --compare - The branch to compare
#     --extension - The file extension to search in
#     --repo - The absolute path to the repository
#
# Example: ./changedCssClassSearch.sh --base=develop --compare=origin/feature --extension=html  --repo=/home/user/git/repo/
#
# Dependent on having Element Finder installed: https://github.com/keeganstreet/element-finder

RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m'

function searchCss {
    # get the log | grep for changed classes | strip whitespace from the start of the lines | strip the opening bracket, plus and minus | strip @media etc | strip anything starting with digit | replace commas with newlines | strip bracketed fancyness e.g: [disabled="disabled"] | remove :before etc | sort list and make
    out="$(git log -p --no-merges --left-only ${COMPARE}...${BASE} *.css  | grep -o "^.*{" | sed 's/[[:space:]]//g' | sed 's|[{+-]||g' | sed '/^@/d' | sed '/^[0-9]/d' | sed 's/,/\n/g' | sed 's/\[[^][]*\]//g'| sed 's/:.*//' | sort -u)" 
}

for i in "$@"; do
case $i in
    -b=*|--base=*)
    BASE="${i#*=}"
    shift # past argument=value
    ;;
    -c=*|--compare=*)
    COMPARE="${i#*=}"
    shift # past argument=value
    ;;
    -e=*|--extension=*)
    EXTENSION="${i#*=}"
    shift # past argument=value
    ;;
    -r=*|--repo=*)
    REPO="${i#*=}"
    shift # past argument=value
    ;;
    *)
            # unknown option
    ;;
esac
done

cd $REPO
printf "\n--------------------\n"
printf "${RED}Running search for ${NC} - ${GREEN}Comparing ${COMPARE} with ${BASE}${NC}"
printf "\n--------------------\n\n"
searchCss
echo "$out" | while IFS= read -r line; do
    elout="$(elfinder --selector $line --extension ${EXTENSION})"
    if [[ ${elout} != *"Found 0 matches in 0 files"* ]]
    then
        printf "${elout}"
        printf "\n\n--------------------\n\n"
    fi
done