php.extractClassSymbols

#!/bin/bash

set -euo pipefail
IFS=$'\n\t'

usage() {
  detail "usage : $(basename "$0") [ --filter expression ]"
  doc=(
    "echoes a list of class with their"
    "" "List of flags :"
    "-h | --help displays help"
    "--filter expression removes expression from results"
    "--only expression removes not matching from results"
  )
  detail --printf -- "  %s\n" "${doc[@]}"
}

filters=()
only=()
while test "$#" -gt 0; do
  case "$1" in
  "-h" | "--help")
    usage
    exit
    ;;
  --filter)
    shift
    if [ "$#" -lt 1 ]; then
      exitError 1 "Missing argument for filter"
    fi
    filters+=("$1")
    ;;
  --only)
    shift
    if [ "$#" -lt 1 ]; then
      exitError 1 "Missing argument for only"
    fi
    only+=("$1")
    ;;
  esac
  shift
done

filter='$^'
if [ "${#filters[@]}" -gt 0 ]; then
  filter=$(printf "|(%s)" "${filters[@]}")
  filter=${filter:1}
fi



mapfile -t lines < <(
  find . -name "*.php" -exec ag "^[ \t]*\b(interface|(abstract )?class|trait)\b" {} '+' |
    grep -vP "\b(lib|vendor)\b" |
    php.makeClassHierarchyPipeline | sort -u | uniq | grep -viP "$filter" |
    matchAll "${only[@]}"
)

symbols=()

for line in "${lines[@]}"; do
  symbol=${lines%%\'*}
  symbols+=("$symbol")
done

mapfile -t duplicates < <(printf "%s\n" "${symbols[@]}" | uniq -c | sed -re '/\b1\b/d' -re 's#^\s+[0-9]+\s+##g')

if [ -n "${duplicates[*]}" ]; then
  printf "Duplicate found: %s\n" "${duplicates[@]}" >&2
fi

echo "<?php"
echo "# filtered : $filter"
printf "# only : "
printf "%s " "${only[@]}"
printf "\n"
echo "return ["
printf "  %s\n" "${lines[@]}"
echo "];"