| @@ -0,0 +1,137 @@
+#!/bin/bash
+
+# Copyright 2005 Peter Poeml <apache@suse.de>. All Rights Reserved.
+
+# 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.
+
+
+debug=false
+
+function usage() {
+ cat <<-EOF
+ usage: $(basename $0) [-r] FILE VAR WORD
+
+ Add word WORD to variable VAR in file FILE, or remove
+ it if the -r option is given.
+
+ Example:
+ $(basename $0) /etc/sysconfig/apache2 APACHE_SERVER_FLAGS asdf
+ leads to the change:
+ -APACHE_SERVER_FLAGS="SSL STATUS ruby"
+ +APACHE_SERVER_FLAGS="SSL STATUS ruby asdf"
+
+ If multiple lines matching ^VAR= are found (which happens to be a habit of
+ mine), only the last one is manipulated.
+
+ It does not work for WORD starting with characters like a dash which
+ prevent word boundary matching.
+
+ EOF
+}
+
+function find_last_occurrence () {
+ # takes two arguments, FILE and VAR
+ # and return the number of the last line where
+ # VAR occurs in FILE (not commented)
+ grep -n -- "^[[:space:]]*$1" $2 | tail -n 1 | cut -d: -f1
+}
+
+function word_present () {
+ . $file
+ case " ${!var} " in
+ *" $word "*) true;;
+ *) false;;
+ esac
+}
+
+function add_word() {
+ local word=$1
+ local word_quoted=$2
+ if ! word_present; then
+ $debug && cp $file $tmpf
+ sed -i -e "${lineno} {
+ s/^[[:space:]]*\($var=\".*\)\(\".*\)/\1 $word_quoted\2/;
+ s/=\" /=\"/
+ }" $file
+ $debug && diff -u $tmpf $file
+ else
+ echo \"$word\" already present
+ fi
+ # some balancing for vim"s syntax highlighting
+}
+
+function remove_word() {
+ local word=$1
+ local word_quoted=$2
+ if word_present; then
+ $debug && cp $file $tmpf
+ sed -i -e "${lineno} {
+ s/\(['\" ]\)$word_quoted\(['\" ]\)/\1 \2/g
+ s/ / /g
+ }" $file
+ $debug && diff -u $tmpf $file
+ else
+ echo \"$word\" not present
+ fi
+ # some balancing for vim"s syntax highlighting
+
+}
+
+# poor man's option parsing
+
+case "$1" in
+-h) usage; exit 0;;
+esac
+
+if [ $# -lt 3 ]; then
+ echo not enough arguments
+ echo
+ usage; exit 1
+fi
+
+action=add
+case "$1" in
+-r) action=remove; shift;;
+esac
+
+file=$1; shift
+var=$1; shift
+word=$1
+word_quoted=${1//\//\\\/}
+
+
+if $debug; then
+ echo FILE: $file
+ echo VAR: $var
+ echo WORD: $word
+ echo current content:
+ grep "^$var=" $file | tail -n 1
+ echo
+fi
+
+
+if ! [ -r $file ]; then
+ echo ${0##*/}: file $file is not a readable file
+ exit 1
+fi
+
+lineno=$(find_last_occurrence $var $file)
+if [ -z $lineno ]; then
+ echo ${0##*/}: variable $var does not occur in $file
+ exit 1
+fi
+
+$debug && tmpf=$(mktemp /tmp/$(basename $0).XXXXXX)
+
+if [ $action = add ]; then
+ add_word $word $word_quoted $lineno
+else
+ remove_word $word $word_quoted $lineno
+fi
+
+$debug && rm -f $tmpf
+
+exit 0
|
