update Perl sample scripts
This commit is contained in:
marschap
+178
-30
@@ -9,6 +9,7 @@
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# 2001, David Glaude
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# 2002, Jonathan Oxer
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# 2002, Rene Wagner <reenoo@gmx.de>
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# 2006, Peter Marschall
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#
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# This file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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@@ -25,6 +26,9 @@
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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#
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use 5.005;
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use strict;
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use Getopt::Std;
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use IO::Socket;
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use Fcntl;
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@@ -33,26 +37,58 @@ use Fcntl;
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############################################################
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# Path to `fortune' program.
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$FORTUNE = "fortune";
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my $FORTUNE = "fortune";
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# Host which runs lcdproc daemon (LCDd)
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$HOST = "localhost";
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my $SERVER = "localhost";
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# Port on which LCDd listens to requests
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$PORT = "13666";
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my $PORT = "13666";
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############################################################
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# End of user configurable parts
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############################################################
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my $progname = $0;
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$progname =~ s#.*/(.*?)$#$1#;
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# declare functions
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sub update_text($);
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sub error($@);
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sub usage($);
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## main routine ##
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my %opt = ();
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# get options #
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if (getopts('F:s:p:hV', \%opt) == 0) {
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usage(1);
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}
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# check options
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usage(0) if ($opt{h});
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if ($opt{V}) {
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print STDERR $progname ." version 1.1\n";
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exit(0);
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}
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# check number of arguments
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usage(1) if ($#ARGV >= 0);
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# set variables
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$SERVER = defined($opt{s}) ? $opt{s} : $SERVER;
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$PORT = defined($opt{p}) ? $opt{p} : $PORT;
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$FORTUNE = defined($opt{F}) ? $opt{F} : $FORTUNE;
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# Connect to the server...
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$remote = IO::Socket::INET->new(
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Proto => "tcp",
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PeerAddr => $HOST,
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my $remote = IO::Socket::INET->new(
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Proto => 'tcp',
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PeerAddr => $SERVER,
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PeerPort => $PORT,
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)
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|| die "Cannot connect to LCDproc port\n";
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or error(1, "cannot connect to LCDd daemon at $SERVER:$PORT");
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# Make sure our messages get there right away
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$remote->autoflush(1);
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@@ -66,13 +102,11 @@ print $remote "hello\n";
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my $lcdresponse = <$remote>;
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#print $lcdresponse;
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# Turn off blocking mode...
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fcntl($remote, F_SETFL, O_NONBLOCK);
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# Set up some screen widgets...
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print $remote "client_set name {fortune.pl}\n";
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print $remote "client_set name {$progname}\n";
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$lcdresponse = <$remote>;
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print $remote "screen_add fortune\n";
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$lcdresponse = <$remote>;
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@@ -85,26 +119,26 @@ $lcdresponse = <$remote>;
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print $remote "widget_add fortune text scroller\n";
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$lcdresponse = <$remote>;
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&update_text();
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update_text($remote);
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# Forever, we should do stuff...
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while(1)
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while (1)
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{
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# Handle input... (spew it to the console)
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# Also, certain keys scroll the display
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while(defined($input = <$remote>)) {
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while (defined(my $input = <$remote>)) {
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#print $input;
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# Make sure we handle each line...
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@lines = split(/\n/, $input);
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foreach $line (@lines)
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{
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if ( $line =~ /^success$/ ) { next; }
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if($line =~ /^ignore (\S)/) # Update just after disappearing
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{
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&update_text();
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}
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my @lines = split(/\n/, $input);
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foreach my $line (@lines) {
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next if ( $line =~ /^success$/ );
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# Update just after disappearing
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if ($line =~ /^ignore (\S)/) {
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update_text($remote);
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}
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}
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}
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@@ -112,17 +146,131 @@ while(1)
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sleep 1;
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}
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close ($remote) || die "close: $!";
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close($remote) or error(1, "close() failed: $!");
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exit;
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sub update_text {
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# Grab some text.
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$text = `$FORTUNE` || die "\n$0: Error running `$FORTUNE'.\nPlease check that the path is correct.\n\n";
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@lines = split(/\n/, $text);
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$text = join(" / ", @lines);
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# update text on LCD
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sub update_text($)
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{
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my $remote = shift;
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my $text;
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# Grab some text
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$text = `$FORTUNE` || error(1, "error running `$FORTUNE'.\nPlease check that the path is correct.");
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# replace new-line by slashes
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$text =~ s,\n, / ,g;
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# Now, show a fortune...
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print $remote "widget_set fortune text 1 2 20 4 v 16 {$text}\n";
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my $lcdresponse = <$remote>;
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$text = <$remote>;
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}
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## print out error message and eventually exit ##
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# Synopsis: error($status, $message)
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sub error($@)
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{
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my $status = shift;
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my @msg = @_;
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print STDERR $progname . ": " . join(" ", @msg) . "\n";
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exit($status) if ($status);
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}
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## print out usage message and exit ##
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# Synopsis: usage($status)
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sub usage($)
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{
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my $status = shift;
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print STDERR "Usage: $progname [<options>]\n";
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if (!$status) {
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print STDERR " where <options> are\n" .
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" -s <server> connect to <server> (default: $SERVER)\n" .
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" -p <port> connect to <port> on <server> (default: $PORT)\n" .
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" -F <fortune> use <fortune> as fortune program (default: $FORTUNE)\n" .
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" -h show this help page\n" .
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" -V display version number\n";
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}
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else {
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print STDERR "For help, type: $progname -h\n";
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}
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exit($status);
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}
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__END__
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=pod
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=head1 NAME
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fortune.pl -- display fortune messages on the LCD
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=head1 SYNOPSIS
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B<fortune.pl>
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[B<-s> I<server>]
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[B<-p> I<port>]
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[B<-F> I<fortune>]
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[B<-h>]
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[B<-V>]
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=head1 DESCRIPTION
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B<fortune.pl> is a small example client for LCDd, the lcdproc server.
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It connects to the LCDd daemon and displays fortune cookies as delivered
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by the well known fortune program.
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=head1 OPTIONS
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=over 4
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=item B<-s> I<server>
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Connect to the LCDd daemon at host I<server> instead of the default C<localhost>.
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=item B<-p> I<port>
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Use port I<port> when connecting to the LCDd server instead of the default
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LCDd port C<13666>.
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=item B<-F> I<fortune>
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Use I<fortune> as the program generation fortune messages instead of the
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default C<fortune>
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=item B<-h>
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Display a short help page and exit.
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=item B<-V>
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Display fortune.pl's version number and exit.
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=back
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=head1 SEE ALSO
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L<fortune(6)>,
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L<LCDd(8)>
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=head1 AUTHORS
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fortune.pl was written by various members of the LCDproc project team;
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this manual page was written by Peter Marschall.
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=cut
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# EOF
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