verify_deprecated_string_uses.sh

#!/bin/bash
# Find uses of deleted strings for a given commit within codebase.
# May lead to false positives but easily detectable in any case.
#
# Usage: within a git repo: verify_deprecated_string_uses.sh <commit>. Look for ERROR @ output or exit code.
commit=${1:-HEAD}
status=0
pushd "$(git rev-parse --show-toplevel)" > /dev/null
echo "Checking commit ${commit}"
while read -r line; do
    if [[ ${line} =~ ^-\$string\[[\'\"](.*)[\"\']\]\ * ]]; then
        search=${BASH_REMATCH[1]}
        echo "'${search}' string removed. Looking for uses in .php files..."
        # Add quotes
        search="['\"]${search}['\"]"
        while read -r error; do
            echo "  - ERROR: Use found: '${error}'"
            status=1
        done < <(find . -name "*.php" | xargs grep "${search}")
    fi

done < <(git show ${commit})
popd > /dev/null
exit ${status