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#!/bin/sh
name='@name@'
ver='0.9'
# Copyright (C) 2009-2010 Luke Shumaker
#
# This file is part of rvs.
#
# rvs 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, or (at your option) any later version.
#
# rvs 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; see the file COPYING.
# If not, see <http://www.gnu.org/licenses>.
export RVS="$0" #RVS='@RVS@'
BINDIR='@BINDIR@'
baseTMPDIR='@TMPDIR@'
export LIBDIR='@LIBDIR@'
export ETCDIR='@ETCDIR@'
################################################################################
# Internal use #
################################################################################
# General ############################################################
_error() {
echo "$RVS: $1" >> /dev/stderr
exit ${2-1}
}
# Repository #########################################################
_repo() {
if [ -z "$REPO" ]; then # we aren't getting a value from then env
repo=".$name"
owd="`pwd`" # old working directory
# [----can ascend-----] && [-haven't found repo-]
while [ "$pwd" != "`pwd`" ] && [ ! -e "`pwd`/$repo" ]; do
pwd=`pwd`
cd ..
done
if [ -e "`pwd`/$repo" ]; then
# we found a repository
echo "`pwd`/$repo"
else
# we didn't find a repository
_error "no $name repository found"
fi
cd "$owd"
else
echo "$REPO"
fi
}
# Modules ############################################################
_runcom() {
# exit states
# 0 - fine
# 1 - could not find command
# 2 - could not run command
usage="usage: $RVS runcom COMMAND"
command=${1?"$usage"}; shift
if [ ! -e "$BINDIR/$command" ]; then
exit 1
else
mkdir -p "$baseTMPDIR"
export TMPDIR="`mktemp -d --tmpdir="$baseTMPDIR"`"
if [ -z "$RVS_LEVEL" ]; then
export RVS_LEVEL=0;
else
export RVS_LEVEL=`expr $RVS_LEVEL + 1`
fi
if [ -f "$BINDIR/$command" ]; then
exec "$BINDIR/$command" $@ | tee "$TMPDIR/$command"
elif [ -d "$BINDIR/$command" ]; then
mkdir -p "$TMPDIR/$command"
for file in "$BINDIR/$command"/*; do
id="`basename "$file" | sed 's/^[0-9]*-//'`"
"$file" $@ | tee "$TMPDIR/$command/$id"
done
else
exit 2
fi
rm -rf "$TMPDIR"
fi
}
_nextpriority() {
usage="usage: $RVS nextpriority COMMAND"
command=${1?"$usage"}
for file in "$BINDIR/$command"/*; do
echo "$file" | sed 's/^\([0-9]*\)-.*/\1/'
done | sort -n | tail -n1 | xargs expr 1 +
}
################################################################################
# Builtin commands #
################################################################################
_init() {
# exit states:
# 0 - fine
# 1 - repo already exists
# 2 - error running init commands
REPO="`_repo 2> /dev/null`"
if [ -z "$REPO" ]; then
export REPO="`pwd`/.$name"
install -d "$REPO"
_runcom init
case "$?" in
0) exit 0;;
1) exit 0;;
2) _error 'error running init scripts' 2;;
esac
else
_error "repository already exists at \`$REPO'" 1
fi
}
################################################################################
# Builtin commands -- installing modules #
################################################################################
_install() {
usage="usage: $RVS install FILE COMMAND ID [PRIORITY]"
file=${1?"$usage"}
command=${2?"$usage"}
id=${3?"$usage"}
priority=${4-"`_nextpriority "$command"`"}
install -d "$BINDIR/$command"
install "$file" "$BINDIR/$command/$priority-$id"
}
_uninstall() {
usage="usage: $RVS uninstall COMMAND [ID]"
command=${1?"$usage"}
id=$2
if [ -z "$id" ]; then
# no ID specified
rm "$BINDIR/$command"
else
# ID specified
rm "$BINDIR/$command/"*-"$id"
if [ -z "$(ls "$BINDIR/$command")" ]; then
rmdir "$BINDIR/$command"
fi
fi
}
################################################################################
# Main #
################################################################################
# START OPTION HANDLING #
com=$1;
# END OPTION HANDLING #
case "$com" in
'') _error 'no command specified';;
repo) _repo; exit $?;;
'init' ) shift; _init $@; exit $?;;
'install') shift; _install $@; exit $?;;
'uninstall') shift; _uninstall $@; exit $?;;
*)
REPO=`_repo`
if [ "$?" = '0' ]; then
export REPO
_runcom $@
case "$?" in
0) exit 0;;
1) _error "could not find command \`$1'" 1;;
2) _error "could not run command \`$1'" 2;;
esac
else
exit 1
fi
:;;
esac
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