From 579eb66ce74a0823f4e1f76ccba5f15c3497b1e7 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Sun, 21 Oct 2012 21:56:38 -0400
Subject: Add "common" and "load" library modules.

---
(limited to 'lib/common.sh')

diff --git a/lib/common.sh b/lib/common.sh
new file mode 100644
index 0000000..14762db
--- /dev/null
+++ b/lib/common.sh
@@ -0,0 +1,50 @@
+# opkhelper
+# lib/common
+# Functions for stack memory management.
+#
+# Copyright (C) 2012 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 2 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/>.
+
+[ -n "${_OH_COMMON_SM}" ] && return 0
+_OH_COMMON_SM='true'
+
+_OH_STACK_VARS=
+_OH_SAVED_IFS=
+
+_oh_local()
+{
+	# Push the variable list onto the stack.
+	_OH_STACK_VARS="${_OH_STACK_VARS}|${*}"
+
+	# Save the old IFS value, if any, and set it to its default.
+	_OH_SAVED_IFS="${IFS}"
+	IFS=' 	
+'
+}
+
+_oh_return()
+{
+	# Unset the variables at the top of the stack.
+	IFS=' '
+	unset -v ${_OH_STACK_VARS##*|}
+
+	# Pop the variable list from the top of the stack.
+	_OH_STACK_VARS="${_OH_STACK_VARS%|*}"
+
+	# Restore the saved IFS.
+	IFS="${_OH_SAVED_IFS}"
+
+	return ${1}
+}
--
cgit v0.9.1