#!/bin/sh

# The MIT License (MIT)
#
# Copyright © 2020-2025 pacman64
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


# runeach [options...] [command...] [args...]
#
#
# RUN EACH shows each command about to run on stderr, then runs each command
# using stdin lines to add a final argument to the arguments given explicitly
#
# The options are, available both in single and double-dash versions
#
#   -d          run nothing, and show would-be completed commands to stdout
#   -dry        run nothing, and show would-be completed commands to stdout
#   -dryrun     run nothing, and show would-be completed commands to stdout
#   -dry-run    run nothing, and show would-be completed commands to stdout
#
#   -h          show this help message
#   -help       show this help message
#
#   -q          just run the commands, without showing them on stderr
#   -quiet      just run the commands, without showing them on stderr
#   -s          just run the commands, without showing them on stderr
#   -silent     just run the commands, without showing them on stderr


case "$1" in
    -h|--h|-help|--help)
        awk '/^# +runeach /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
        exit 0
    ;;
esac

quiet=0
dry_run=0
case "$1" in
    -d|--d|-dry|--dry|-dryrun|--dryrun|-dry-run|--dry-run)
        dry_run=1
        shift
    ;;
    -q|--q|-quiet|--quiet|-s|--s|-silent|--silent)
        quiet=1
        shift
    ;;
esac

[ "$1" = "--" ] && shift

cmd="$@"
sep=' '
if [ -z "${cmd}" ]; then
    sep=''
fi

IFS="$(printf "\n")"

while read -r line; do
    if echo "${line}" | grep -E -q '^ *\r?$'; then
        continue
    fi

    if [ "${dry_run}" -eq 1 ]; then
        printf "%s%s%s\n" "${cmd}" "${sep}" "${line}"
        continue
    fi

    if [ "${quiet}" -eq 0 ]; then
        printf "\e[7m%s%s%s\e[0m\n" "${cmd}" "${sep}" "${line}" >&2
    fi

    ${cmd} "${line}"
done