From 8c5c5ec77de0be1ebfce75a5dc494e25c5eb77ab Mon Sep 17 00:00:00 2001
From: Patrick Spek <p.spek@tyil.nl>
Date: Sun, 2 Jan 2022 21:25:59 +0100
Subject: Add pkgsrc utility

---
 .local/bin/pkgsrc | 220 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 220 insertions(+)
 create mode 100755 .local/bin/pkgsrc

diff --git a/.local/bin/pkgsrc b/.local/bin/pkgsrc
new file mode 100755
index 0000000..a851655
--- /dev/null
+++ b/.local/bin/pkgsrc
@@ -0,0 +1,220 @@
+#!/bin/sh
+
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+
+readonly PKGSRC_ROOT="$HOME/.local/src/pkgsrc"
+readonly PKGSRC_DURATIONS="$XDG_DATA_HOME/pkgsrc/durations"
+
+main()
+{
+	PKGSRC_INIT="$(time_unix)"
+
+	# Handle opts
+	while getopts ":h" opt
+	do
+		case "$opt" in
+			h) usage && exit 0 ;;
+			*)
+				printf "Invalid option passed: %s\n" "$OPTARG" >&2
+				;;
+		esac
+	done
+
+	shift $(( OPTIND - 1 ))
+
+	if [ $# -lt 1 ]
+	then
+		usage
+		exit 1
+	fi
+
+	PKGSRC_ACTION="action_$1" ; shift
+
+	if ! command -V "$PKGSRC_ACTION" 2>/dev/null | grep -qwi function
+	then
+		usage
+		exit 1
+	fi
+
+	$PKGSRC_ACTION "$@"
+}
+
+action_add()
+{
+	mkdir -p -- "$PKGSRC_DURATIONS"
+
+	for package in "$@"
+	do
+		cd -- "$PKGSRC_ROOT"
+
+		if ! cd -- "$(pkg_resolve "$package")"
+		then
+			printf "No package found for %s\n" "$package"
+			continue
+		fi
+
+		bmake install \
+			&& bmake clean-depends \
+			&& bmake clean \
+			|| continue
+
+		printf "%d\n" "$(( $(time_unix) - PKGSRC_INIT ))" \
+			>> "$PKGSRC_DURATIONS/$package"
+	done
+
+	printf "Installation took %s\n" "$(time_duration "$PKGSRC_INIT" "$(time_unix)")"
+}
+
+action_del()
+{
+	for package in "$@"
+	do
+		cd -- "$PKGSRC_ROOT"
+
+		if ! cd -- "$(pkg_resolve "$package")"
+		then
+			printf "No package found for %s\n" "$package"
+			continue
+		fi
+
+		bmake deinstall
+	done
+}
+
+action_grep()
+{
+	cd -- "$PKGSRC_ROOT"
+
+	find . -maxdepth 2 -type d \
+		| cut -c 3- \
+		| grep "$@"
+}
+
+action_init()
+{
+	export CVS_RSH="ssh"
+
+	if [ ! -d "$PKGSRC_ROOT" ]
+	then
+		mkdir -p -- "${PKGSRC_ROOT%/*}"
+		cd -- "$_"
+		cvs -d anoncvs@anoncvs.NetBSD.org:/cvsroot checkout -P pkgsrc
+	fi
+
+	if [ -d "$HOME/.pkgsrc" ]
+	then
+		printf "pkgsrc seems to have been initialized already at $HOME/.pkgsrc\n"
+		exit 1
+	fi
+
+	cd -- "$PKGSRC_ROOT/bootstrap"
+	rm -fr -- work
+	./bootstrap --unprivileged --prefix="$HOME/.pkgsrc"
+
+	printf "Bootstrapped in %s\n" "$(time_duration "$PKGSRC_INIT" "$(time_unix)")"
+}
+
+action_opts()
+{
+	cd -- "$(pkg_resolve "$1")" || die "No package found for $1"
+
+	bmake show-options
+}
+
+action_time()
+{
+	for package in "$@"
+	do
+		if [ ! -f "$PKGSRC_DURATIONS/$package" ]
+		then
+			printf "%s: No timings\n" "$package"
+			continue
+		fi
+
+		package_min="$(sort "$PKGSRC_DURATIONS/$package" | head -n 1)"
+		package_max="$(sort "$PKGSRC_DURATIONS/$package" | tail -n 1)"
+		package_avg="$(awk '{ sum += $1 } END { printf("%.0f", (sum / NR)) }' "$PKGSRC_DURATIONS/$package")"
+
+		printf "%s: %s / %s / %s \n" \
+			"$package" \
+			"$(time_duration "$package_min")" \
+			"$(time_duration "$package_avg")" \
+			"$(time_duration "$package_max")"
+	done
+}
+
+action_update()
+{
+	cd -- "$PKGSRC_ROOT"
+
+	cvs up
+
+	printf "Updated in %s\n" "$(time_duration "$PKGSRC_INIT" "$(time_unix)")"
+}
+
+usage()
+{
+	cat <<EOF
+Usage:
+	${0##*/} -h <action> [target]
+
+Interact with pkgsrc.
+
+Options:
+	-h  Show this help text and exit.
+
+Actions:
+	add    Install one or more TARGETs.
+	del    Uninstall one or more TARGETs.
+	grep   Search for TARGET.
+	init   Initialize the pkgsrc repository, and run the bootstrap script.
+	opts   Show the options of TARGET.
+	time   Show min, avg, max installation times for TARGETs.
+	update Update the pkgsrc repository.
+EOF
+}
+
+#
+# Helper utilities
+#
+
+die()
+{
+	printf "%s\n" "$*" >&2
+	exit 1
+}
+
+pkg_resolve()
+{
+	readlink -f "$PKGSRC_ROOT"/*/"$1" || readlink -f "$PKGSRC_ROOT/$1"
+}
+
+time_unix()
+{
+	awk 'BEGIN{srand();print srand()}'
+}
+
+time_duration()
+{
+	if [ ! -z "$2" ]
+	then
+		elapsed="$(( $2 - $1 ))"
+	else
+		elapsed="$1"
+	fi
+
+	printf "%dh %02dm %02ds" \
+		"$(( elapsed / 60 / 60 ))" \
+		"$(( elapsed / 60 % 60))" \
+		"$(( elapsed % 60 ))"
+}
+
+main "$@"
-- 
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