#!/usr/bin/perl
#Copyright (c) 2009, Zane C. Bowers
#All rights reserved.
#
#Redistribution and use in source and binary forms, with or without modification,
#are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
#ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
#WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
#IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
#INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
#BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
#DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
#LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
#THE POSSIBILITY OF SUCH DAMAGE.

use strict;
use warnings;
use Getopt::Std;
use ZConf;

$Getopt::Std::STANDARD_HELP_VERSION = 1;

#version function
sub main::VERSION_MESSAGE {
	print "zcset 1.0.0\n";
}

#print help
sub main::HELP_MESSAGE {
	print "\n".
	      "-c <config>  The config to operate on.\n".
		  "-C  Add a comment.\n".
		  "-s <set>  The set to operate on.\n".
		  "-k <key>  The key to be operated on.\n".
		  "-K <second key>  The second key for a comment or meta\n".
		  "-m  Add a meta.\n".
		  "-v <value>  The value to set it to.\n".
		  "-f <file>  The file to read and set it to.\n".
		  "-S <sys>  Turn on system mode and set it to the specified name.\n";
}

#gets the options
my %opts=();
getopts('s:c:Ck:K:mv:f:S:', \%opts);

#makes sure that -c is set
if (!defined($opts{c})) {
	warn('zcset: -c not defined');
	exit 254;
}

#makes sure that -k is set
if (!defined($opts{k})) {
	warn('zcset: -k not defined');
	exit 254;
}

#make sure both -k and -v are not defined
if ((!defined($opts{v})) && (!defined($opts{f}))) {
	warn('zcset: both -v and -f are not defined');
	exit 254;
}

#make sure both -k and -v are not defined at the same time
if ((defined($opts{v})) && (defined($opts{f}))) {
	warn('zcset: both -v and -f are not defined');
	exit 254;
}

#if -f is set, read it
if (defined( $opts{f} )) {
	open(VALUE, '<', $opts{f});
	$opts{v}=join('', <VALUE>);
	close(VALUE);
}

#it meta/comment make sure we have a value
if (defined($opts{C})) {
	if (!defined($opts{K})) {
		warn('zcset: -K is not defined');
		exit 254;
	}
}
if (defined($opts{m})) {
	if (!defined($opts{K})) {
		warn('zcset: -K is not defined');
		exit 254;
	}
}


#inits zconf
my $zconf = ZConf->new({sys=>$opts{S}});
if($zconf->{error}){
	exit 254;
}

#sets up the arguement hash that will be passed for reading and writing
my %args;
$args{config}=$opts{c};
#if a set is specified, set it
if (defined($opts{s})) {
	$args{set}=$opts{s};
}

#reads it
$zconf->read(\%args);
if(defined($zconf->{error})){
	exit $zconf->{error};
}

#sets it
if (defined( $opts{C} )) {
	$zconf->setComment($opts{c}, $opts{k}, $opts{K}, $opts{v});
}else {
	if (defined( $opts{m} )) {
		$zconf->setMeta($opts{c}, $opts{k}, $opts{K}, $opts{v});
	}else {
		$zconf->setVar($opts{c}, $opts{k}, $opts{v});
	}
}
if (defined($zconf->{error})) {
	exit $zconf->{error};
}

#writes it
$zconf->writeSetFromLoadedConfig(\%args);
if (defined($zconf->{error})) {
	exit $zconf->{error};
}

=head1 NAME

zcset - Sets a value in a ZConf config.

=head1 SYNOPSIS

zcset [B<-s> <set>] B<-c> <config> B<-k> <key> B<-v> <value>

zcset [B<-s> <set>] B<-c> <config> B<-k> <key> B<-f> <file>

zcset [B<-s> <set>] B<-c> <config> B<-k> <key> B<-K> <second key> B<-v> <value> B<-C>

zcset [B<-s> <set>] B<-c> <config> B<-k> <key> B<-K> <second key> B<-f> <file> B<-C>

zcset [B<-s> <set>] B<-c> <config> B<-k> <key> B<-K> <second key> B<-v> <value> B<-m>

zcset [B<-s> <set>] B<-c> <config> B<-k> <key> B<-K> <second key> B<-f> <file> B<-m>

=head1 SWTICHES

=head2 -c <config>

This is the configuration to operate on.

=head2 -C

Operate on comments.

=head2 -f <file>

Reads the file into the variable. Either this or -v needs set.

=head2 -k <key>

This is the key to operate on.

=head2 -K <second key>

This is the key to operate on for comments or metas.

=head2 -m

Operate on metas.

=head2 -s <set>

The set to operate on. This is the only optional switch. If it is now defined,
The choosen/default config will be used.

=head2 -v <value>

This is the value to set it to. Either this or -f needs used.

=head2 -S (0|1)

Set sysmode enable/disable.

=head1 EXIT CODES

Any exit code listed below is a ZConf error.

=head2 254

Improper switch usage.

=head1 AUTHOR

Copyright (c) 2009, Zame C. Bowers <vvelox@vvelox.net>

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in the
     documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS` OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=head1 Changelog

=head2 2009-11-22/6:00 1.0.0

Add meta and comment support.

=head2 2009-11-17/4:50 0.1.1

Fix the -f flag so it now works.

=head2 2009-07-08/1:00 0.1.0

Add sys mode.

=head2 2008-10-06/3:00 0.0.1

Misc. warning and POD cleanups.

=head2 2008-10-08/1:45 0.0.0

Initial release.

=head1 SCRIPT CATEGORIES

Desktop

=head1 OSNAMES

any

=head1 README

zcset - Sets a value in a ZConf config.

=cut
