#!/usr/bin/perl
# Filename:      grml-tips
# Purpose:       query a signature file for a specific keyword and display results
# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>, (c) Alexander Wirt <formorer@grml.org>
# Bug-Reports:   see http://grml.org/bugs/
# License:       This file is licensed under the GPL v2.
# Latest change: Sam Mär 03 15:35:38 CET 2007 [mika]
################################################################################

use strict;
use Pod::Usage;

=head1 NAME

B<grml-tips> - query a signature file for a specific keyword and display results

=head1 SYNOPSIS

B<grml-tips> [OPTION] I<keyword>

=head1 DESCRIPTION

This manual page documents briefly the B<grml-tips> command.

=head1 OPTIONS

=over 8

=item B<--help>

Print this help and exit.

=back

=head1 EXAMPLES

=over 8

=item B<grml-tips> I<ntfs>

Query grml-tips file for tips / hints including keyword  "ntfs".

=item B<grml-tips> I<.>

Display all available B<grml-tips> at once.

=back

=head1 FILES

/usr/share/grml-tips/grml_tips

Signature file containing the tips.

=head1 SEE ALSO

L<grml(1)>

=head1 AUTHOR

grml-tips was written by Alexander Wirt <formorer@grml.org>

=cut


my $grml_tips = '/usr/share/grml-tips/grml_tips';
my $pattern = shift;

if ($pattern eq '') {
    pod2usage( {
	    -message => 'No search pattern provided',
	    -exitval => -1, });
} elsif ($pattern eq  '--help') {
    pod2usage();
}

my @tips;
my $fh;
if (! open ($fh, '<', "$grml_tips")) {
	print "Error: $grml_tips not found.\nExiting.";
	exit -1;
}

my $tip = '';
my $tip_flag = 0;

while (my $line = <$fh>) {
    if ($line !~ /^--/) {
	$tip .= $line;
    } else {
	if ( "$tip" =~ /$pattern/m ) {
	    $tip .= $line;
	    print "$tip";
	    $tip = '';
	    $tip_flag = 1;
	} else {
	    $tip = '';
	}
    }
}
close($fh);

print "Sorry, could not find a tip for '$pattern'. :-(\n"
    . "If you want to submit a tip please mail it to tips\@grml.org - thank "
    . "you!\n\n" unless $tip_flag;

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