From 4308699484e91053b471f64fdf29149087d8cd75 Mon Sep 17 00:00:00 2001
From: Case Duckworth
Date: Thu, 30 Jun 2022 17:28:12 -0500
Subject: Update to version 1.0

---
 licensor | 251 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 251 insertions(+)
 create mode 100755 licensor

(limited to 'licensor')

diff --git a/licensor b/licensor
new file mode 100755
index 0000000..47da938
--- /dev/null
+++ b/licensor
@@ -0,0 +1,251 @@
+#!/bin/sh
+
+# Constants
+PRGN="${0##*/}"
+LICENSOR_CACHE="${XDG_CACHE_HOME:-$HOME/.cache/licensor"
+# Configuration
+: "${LICENSE_REPO_VERSION:=3.17}"
+: "${LICENSE_REPO_URL:=https://github.com/spdx/license-list-data/archive/refs/tags/v$LICENSE_REPO_VERSION.tar.gz}"
+: "${LICENSE_REPO_PATH:=license-list-data-$LICENSE_REPO_VERSION/template}"
+: "${LICENSOR_LICENSE:=MIT}"
+: "${LICENSOR_OUTPUT_FILE:=COPYING}"
+
+usage() {
+	cat <<EOF
+$PRGN: drop a lil ol license in yr project
+USAGE:	$PRGN [-h|-m|-M]
+	$PRGN [FLAGS] [OPTIONS] [LICENSE]
+
+FLAGS:
+ -h	Display this help and exit.
+ -l	List available licenses and exit.
+ -L	List available licenses, disregarding cache.
+	This flag will re-download the license repo.
+ -f	Overwrite existing license.
+ -q	Be quiet (don't log anything).
+
+OPTIONS:
+ -y YEARS	Set copyright date(s) to YEARS.
+		Default: \$(date +%Y).
+ -a AUTHORS	Set copyright holder(s) to AUTHOR.
+		Default: use the first of
+			- git config --get user.name
+			- getent password \$USER
+			- \$USER
+ -e EMAILS	Set AUTHOR's EMAIL address.
+		Default: \$(git config --get user.email),
+		or stay blank.
+ -o FILE	Output the fetched license to FILE.
+		Default: \$PWD/$LICENSOR_OUTPUT_FILE.
+
+PARAMETERS:
+ LICENSE	The license to use.
+		Default: $LICENSOR_LICENSE.
+EOF
+	exit ${1:-0}
+}
+
+main() {
+	_force=false
+	_quiet=false
+	_fold=1
+	_optional=0
+	__width=70
+	__output="$LICENSOR_OUTPUT_FILE"
+	__year="$(date +%Y)"
+	__author="$(guess_author)"
+	__email="$(guess_email)"
+	__copyright="Copyright (C) $__year $__author <$__email>"
+
+	while getopts hlLs:fzZpPqy:a:e:o:w:c: opt; do
+		case "$opt" in
+		# commands
+		h) usage ;;
+		l) list_licenses && exit || exit $? ;;
+		L) list_licenses -f && exit || exit $? ;;
+		s) search_licenses "$OPTARG" ;;
+		# flags
+		f) _force=true ;;
+		z) _fold=1 ;;
+		Z) _fold=0 ;;
+		p) _optional=1 ;;
+		P) _optional=0 ;;
+		q) _quiet=true ;;
+		# options
+		y) __year="$OPTARG" ;;
+		a) __author="$OPTARG" ;;
+		e) __email="$OPTARG" ;;
+		o) __output="$OPTARG" ;;
+		w) __width="$OPTARG" ;;
+		c) __copyright="$OPTARG" ;;
+		*) usage 1 ;;
+		esac
+	done
+	shift $((OPTIND - 1))
+	__license="${1:-$LICENSOR_LICENSE}"
+
+	if [ -e "$__output" ] && ! $_force; then
+		log "File exists: $__output"
+		exit 3
+	fi
+
+	if [ "x$__output" = x- ]; then
+		__output=/dev/stdout
+	fi
+
+	license_file="$(get_license "$__license")" || exit $?
+	license_convert <"$LICENSOR_CACHE/$license_file.template.txt" \
+		"$__copyright" "$_optional" "$_fold" "$__width" >"$__output"
+	[ "$__output" != /dev/stdout ] && log "$__license license written to $__output."
+}
+
+get_licenses() {
+	# Get licenses from cache, or download them
+	if ! [ -d "$LICENSOR_CACHE" ] || [ "x$1" = "x-f" ]; then
+		log "Downlading licenses from $LICENSE_REPO_URL..."
+		mkdir -p "$LICENSOR_CACHE"
+		tmpfile="/tmp/licenses.tar.gz"
+		if ! [ -f "$tmpfile" ]; then
+			curl -o "$tmpfile" -L "$LICENSE_REPO_URL" >/dev/null 2>&1 ||
+				return 1
+		fi
+		log "Extracting licenses to $LICENSOR_CACHE..."
+		if tar -C "$LICENSOR_CACHE" \
+			-xvf "$tmpfile" --strip-components=2 \
+			"$LICENSE_REPO_PATH" >/dev/null 2>&1; then
+			rm "$tmpfile"
+		else
+			return 1
+		fi
+	fi
+}
+
+get_license() {
+	list_licenses | grep -iE '^'"$1"'$' || {
+		log "Can't find license \"$1\"."
+		exit 1
+	}
+}
+
+list_licenses() {
+	get_licenses "$1" || exit 1
+
+	find "$LICENSOR_CACHE" -iname '*.template.txt' |
+		sort |
+		xargs basename -s .template.txt
+}
+
+search_licenses() {
+	list_licenses | grep -iE "$1"
+	exit $?
+}
+
+guess_author() {
+	author="$(git config --get user.name)"
+	[ -z "$author" ] &&
+		author="$(getent passwd "$USER" | awk -F: '{sub(/,+/,"",$5);print $5}')"
+	[ -z "$author" ] &&
+		author="$USER"
+	put "$author"
+}
+guess_email() {
+	email="$(git config --get user.email)"
+	put "$email"
+}
+
+put() { printf '%s\n' "$*"; }
+log() { $_quiet || put "$PRGN: $*" >&2; }
+
+license_convert() {
+	copyright="$1"          # "Copyright (C) 2022 Case Duckworth <acdw@acdw.net>"
+	show_optional="${2:-0}" # 0
+	fold_output="${3:-1}"   # 1
+	fold_width="${4:-70}"   # 70
+	awk '
+BEGIN {
+	foldOutput = '"$fold_output"'
+	foldWidth = '"$fold_width"'
+	showOptional = '"$show_optional"'
+	copyright = "'"$copyright"'"
+}
+{ buf = buf "\n" $0 }
+END {
+	split(buf, b, "")
+	c = 1
+	out = ""
+	optstr = ""
+	opt = 0
+	while (c <= length(b)) {
+		if (b[c] == "<" && b[c + 1] == "<") {
+			tok = ""
+			c += 2
+			closed = 0
+			while (! closed) {
+				tok = tok b[c++]
+				if (b[c] == ">" && b[c + 1] == ">") {
+					closed++
+					c += 2
+				}
+			}
+			if (tok ~ /^beginOptional/) {
+				opt = 1
+			} else if (tok == "endOptional") {
+				if (showOptional) {
+					out = out optstr
+				}
+				opt = 0
+				optstr = ""
+			} else if (tok ~ /^var/) {
+				split(tok, ta, ";")
+				name = ""
+				original = ""
+				for (a in ta) {
+					if (ta[a] ~ "^name") {
+						match(ta[a], /=".*/)
+						name = substr(ta[a], RSTART + 2, RLENGTH - 3)
+					} else if (ta[a] ~ "^original") {
+						match(ta[a], /=".*/)
+						original = substr(ta[a], RSTART + 2, RLENGTH - 3)
+					} else if (ta[a] ~ "^match") {
+						# currently not used
+					}
+				}
+				if (name == "copyright") {
+					out = out copyright
+				} else {
+					out = out original
+				}
+			}
+			continue
+		}
+		if (opt) {
+			optstr = optstr b[c++]
+		} else {
+			out = out b[c++]
+		}
+	}
+	# "Fold" the output
+	if (foldOutput) {
+		split(out, oa, "\n")
+		out = ""
+		for (l in oa) {
+			split(oa[l], la, FS)
+			lc = 0
+			for (w in la) {
+				lc += length(la[w]) + 1
+				if (lc >= foldWidth) {
+					out = out "\n" la[w] " "
+					lc = length(la[w]) + 1
+				} else {
+					out = out la[w] " "
+				}
+			}
+			out = out "\n"
+		}
+	}
+	print out
+}
+'
+}
+
+main "$@"
-- 
cgit 1.4.1-21-gabe81