101 lines
1.9 KiB
Perl
101 lines
1.9 KiB
Perl
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#!/usr/bin/perl
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# $XFree86: xc/programs/xterm/vttests/resize.pl,v 1.1 2004/03/04 02:21:58 dickey Exp $
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#
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# -- Thomas Dickey (2004/3/3)
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# resize.sh rewritten into Perl for comparison.
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# See also Term::ReadKey.
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use IO::Handle;
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sub write_tty {
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open TTY, "+</dev/tty" or die("Cannot open /dev/tty\n");
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autoflush TTY 1;
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print TTY @_;
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close TTY;
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}
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sub get_reply {
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open TTY, "+</dev/tty" or die("Cannot open /dev/tty\n");
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autoflush TTY 1;
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$old=`stty -g`;
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system "stty raw -echo min 0 time 5";
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print TTY @_;
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my $reply=<TTY>;
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close TTY;
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system "stty $old";
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return $reply;
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}
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sub csi_field {
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my $first = @_[0];
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my $second = @_[1];
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$first =~ s/^[^0-9]+//;
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while ( --$second > 0 ) {
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$first =~ s/^[\d]+//;
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$first =~ s/^[^\d]+//;
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}
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$first =~ s/[^\d]+.*$//;
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return $first;
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}
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$original=get_reply("\x1b[18t");
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if ( $original =~ /\x1b\[8;\d+;\d+t/ ) {
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$high=csi_field($original,2);
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$wide=csi_field($original,3);
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printf "parsed terminal size $high,$wide\n";
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} else {
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die "Cannot get terminal size via escape sequence\n";
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}
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#
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$maximize=get_reply("\x1b[19t");
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if ( $maximize =~ /\x1b\[9;\d+;\d+t/ ) {
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$maxhigh=csi_field($maximize,2);
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$maxwide=csi_field($maximize,3);
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$maxhigh != 0 or $maxhigh = $high * 2;
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$maxwide != 0 or $maxwide = $wide * 2;
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printf "parsed terminal maxsize $maxhigh,$maxwide\n";
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} else {
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die "Cannot get terminal size via escape sequence\n";
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}
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sub catch_zap {
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$zapped++;
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}
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$SIG{INT} = \&catch_zap;
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$SIG{QUIT} = \&catch_zap;
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$SIG{KILL} = \&catch_zap;
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$SIG{HUP} = \&catch_zap;
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$SIG{TERM} = \&catch_zap;
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$w=$wide;
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$h=$high;
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$a=1;
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$zapped=0;
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while ( $zapped == 0 )
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{
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# sleep 1
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printf "resizing to $h by $w\n";
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write_tty("\x1b[8;$h;$w" . "t");
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if ( $a == 1 ) {
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if ( $w == $maxwide ) {
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$h += $a;
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if ( $h = $maxhigh ) {
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$a = -1;
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}
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} else {
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$w += $a;
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}
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} else {
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if ( $w == $wide ) {
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$h += $a;
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if ( $h = $high ) {
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$a=1;
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}
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} else {
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$w += $a;
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}
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}
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}
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write_tty($original);
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