php.checkForBadRequires

#!/bin/bash

set -euo pipefail

usage(){
    detail -3 "Usage : $(basename "$0") <php file>"
}

arguments=()
while [ "$#" -gt 0  ]; do
    case "$1" in
        -h|--help)
            usage
            exit
            ;;
        --)
            shift
            arguments+=("$@")
            set --
            break;
            ;;
        --*)
            echo "Unknown long option $1" >&2
            exit 3
            ;;
        -*)
            if [ "${#1}" -eq 1 ]; then
                echo "Invalid token -" >&2
                exit 1
            fi
            if [ "${#1}" -eq 2 ]; then
                echo "unknown option $1" >&2
                exit 2
            fi
            first=${1:1:1}
            rest=${1:2}
            shift
            set -- -"$first" -"$rest" "$@"
            continue
            ;;
        *)
            arguments+=("$1")
            ;;
    esac
    shift
done

set -- "${arguments[@]}"

if [ "$#" -lt 1 ]; then
    exitError 1 "Missing filename"
fi

file="$1"

if [ ! -f "$file" ]; then
    exitError 2 "Not a file $file";
fi

if [ ! which cleanPhp >&2 2> /dev/null ]; then
    exitError 3 "Missing cleanPhp executable"
fi

dirname=$(dirname "$file")
dirname=${dirname%%/}
cd $dirname

basefile="$(basename $file)"

mapfile -t content < <(cleanPhp "$basefile" \
    | grep -oE "require_once\s+__DIR__[^;]+" \
    | grep -v '\$'
)

bad=("In $PWD/$basefile :")
for instruction in "${content[@]}"
do
    trimed=${instruction%%\"}
    trimed=${instruction%%\'}
    lookFor=$(echo "$trimed" | sed -re "s#^.*__DIR__\s*\.\s*.##")
    if [ ! -f "$PWD$lookFor" ]; then
        bad+=("  could not resolve $PWD$lookFor from $instruction")
    fi
done

if [ "${#bad[@]}" -gt 1 ]; then
    printf "%s\n" "${bad[@]}"
fi