From 7aa5ff9ac61a24f3b8fc7c47352d64a938df316f Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Sat, 27 Jul 2013 14:19:29 -0400
Subject: lib/garbage.sh: New file.

---
diff --git a/lib/garbage.sh b/lib/garbage.sh
new file mode 100644
index 0000000..2862ad9
--- /dev/null
+++ b/lib/garbage.sh
@@ -0,0 +1,65 @@
+# pro-archman
+# lib/garbage.sh
+# Functions for garbage collection
+#
+# Copyright (C) 2013  Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use dir
+
+collect_garbage()
+{
+	local cur_time=
+	local garbage=
+	local gar_time=
+	local dirs=
+	local file=
+
+	# NB: The %s format conversion specifier is not specified by POSIX, but
+	# it is supported by the GNU and BusyBox implementations of date.
+	cur_time=$(date '+%s')
+
+	for garbage in "${archive}/.db/garbage/"*; do
+		gar_time=${garbage##*/}
+		if [ ${cur_time} -lt ${gar_time} ]; then
+			break
+		fi
+		while read -r dirs file; do
+			rm -f "${archive}/${file}"
+			while [ ${dirs} -gt 0 ]; do
+				file="${file%/*}"
+				try_rmdir "${archive}/${file}"
+				dirs=$(($dirs - 1))
+			done
+		done <<-EOF
+			${garbage}
+			EOF
+		rm -f "${garbage}"
+	done
+}
+
+mark_pool_garbage()
+{
+	local file="${1}"
+	local time=
+
+	# NB: The %s format conversion specifier is not specified by POSIX, but
+	# it is supported by the GNU and BusyBox implementations of date.
+	time=$(date '+%s')
+	time=$(($time + $conf_pool_gc_delay))
+
+	mkdir -p "${archive}/.db/garbage"
+	printf '2 %s\n' "${file}" >>"${archive}/.db/garbage/${time}"
+}
diff --git a/lib/local.mk b/lib/local.mk
index 6c8b59e..10e1afa 100644
--- a/lib/local.mk
+++ b/lib/local.mk
@@ -8,4 +8,5 @@ pkglib_srcs = \
 	lib/dir.sh \
 	lib/db.sh \
 	lib/index.sh \
+	lib/garbage.sh \
 	lib/cmd.sh
--
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