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authorP. J. McDermott <pjm@nac.net>2012-10-21 21:56:38 (EDT)
committer P. J. McDermott <pjm@nac.net>2012-10-21 21:59:04 (EDT)
commit579eb66ce74a0823f4e1f76ccba5f15c3497b1e7 (patch)
treee7cfb0c9d84dbcff99205fe56a2b9672eea69ced
parent6d8c745ecac3ea33e2e0d409fe84519c388966d2 (diff)
Add "common" and "load" library modules.
-rw-r--r--lib/Makefile.in2
-rw-r--r--lib/common.sh50
-rw-r--r--lib/load.sh48
3 files changed, 99 insertions, 1 deletions
diff --git a/lib/Makefile.in b/lib/Makefile.in
index 78cdc44..c8d0b07 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -35,7 +35,7 @@ sed_script = s&@@PACKAGE_NAME@@&$(package_name)&;\
.SUFFIXES:
.SUFFIXES: .sh .sm
-SRCS =
+SRCS = load.sh common.sh
OBJS = $(SRCS:.sh=.sm)
distdir = ../$(package_name)-$(package_version)/lib
diff --git a/lib/common.sh b/lib/common.sh
new file mode 100644
index 0000000..14762db
--- /dev/null
+++ b/lib/common.sh
@@ -0,0 +1,50 @@
+# opkhelper
+# lib/common
+# Functions for stack memory management.
+#
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+[ -n "${_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 ${1}
+}
diff --git a/lib/load.sh b/lib/load.sh
new file mode 100644
index 0000000..2a71036
--- /dev/null
+++ b/lib/load.sh
@@ -0,0 +1,48 @@
+# opkhelper
+# lib/load
+# Functions for loading library modules.
+#
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+[ -n "${_OH_LOAD_SM}" ] && return 0
+_OH_LOAD_SM='true'
+
+# The "common" module is used by this and all other modules.
+# We have to manually load the "common" module so we can use it in oh_use.
+. '@@LIBOPKHELPER@@/common.sm'
+
+oh_use()
+{
+ _oh_local _ohu_module
+
+ if [ ${#} -eq 1 ]; then
+ _ohu_module="${1}"
+ else
+ _oh_return 125
+ return ${?}
+ fi
+
+ _ohu_module='@@LIBOPKHELPER@@'"/${_ohu_module}.sm"
+ if [ -r "${_ohu_module}" ]; then
+ . "${_ohu_module}"
+ else
+ _oh_return 1
+ return ${?}
+ fi
+
+ _oh_return 0
+ return ${?}
+}