Add minimal ptgdp script

ptgdp

@@ -0,0 +1,97 @@
+#! /bin/bash
+#
+# ptgdp - Play the Goddamned Playlist
+# Copyright (C) 2019 Vintage Salt <rehashedsalt@cock.li>
+#
+# Distributed under terms of the MIT license.
+#
+set -e
+
+# Read-only set-once variables
+declare -r _name="$(basename -- "$0")"
+# Options
+declare -i _opthelp
+declare -i _optverbose=0
+# Working variables
+declare _return
+
+# Helper Functions
+log() {
+	# Print a line to the terminal if _optverbose is greater than $2
+	# $2 defaults to 0
+	[ -z "$1" ] && return 1
+	if [ "$_optverbose" -ge "${2:-0}" ]; then
+		printf "%s\\n" "$1"
+	fi
+}
+error() {
+	# Print a red line to the terminal, exit if $2 is specified
+	[ -z "$1" ] && return 1
+	if [ -t 2 ]; then
+		printf "\\e[31m%s\\e[0m\\n" "$1" 1>&2
+	else
+		printf "ERROR: %s\\n" "$1" 1>&2
+	fi
+	[ -n "$2" ] && exit "${2:-1}"
+}
+has() {
+	# Parse out all arguments and try to find them in path
+	# If an argument cannot be found, set _return and fail
+	[ -z "$@" ] && return 0
+	for prog in $@; do
+		if ! command -v "$prog" > /dev/null 2>&1; then
+			_return="$prog"
+			return 1
+		fi
+	done
+	return 0
+}
+
+# Core program functions
+printhelp() {
+	cat << EOF
+Usage: $_name [OPTION]... [FILE]...
+Use youtube-dl and a music player to queue up or download a number of songs
+given plaintext files with only search queries
+
+  -h			Print this help text
+  -v			Print more status messages. Stacks
+
+Copyright (c) 2019 rehashedsalt@cock.li
+Licensed under the MIT license
+EOF
+}
+
+# Main
+main() {
+	# Getopts before anything else
+	while getopts ":hv" opt; do
+		case $opt in
+			h)
+				_opthelp=1
+				;;
+			v)
+				_optverbose+=1
+				;;
+			:)
+				error "Option requires argument: -$OPTARG" 2
+				;;
+			*)
+				error "Invalid option: -$OPTARG" 2
+				;;
+		esac
+	done
+
+	# Pre-really-do-stuff hooks like help text
+	[ -n "$_opthelp" ] && printhelp && exit 0
+
+	# Do the do
+	log "Validating dependencies" 1
+	if ! has youtube-dl; then
+		error "Failed to validate dependency on program: $_return" 1
+	fi
+	exit 0
+}
+
+main "$@"
+