$CGI::DISABLE_UPLOADS= 1;
use CGI qw/:standard -private_tempfiles/;
-
+use IPC::Open2;
+use IO::Handle;
+use File::Temp;
#---------- pixmaps ----------
-sub parseentryin_pixmap ($) {
+sub parseentryin__pixmap ($) {
my ($entry_in) = @_;
$entry_in =~
- m/^(\w+ \- \w[-+'"#! 0-9a-z]*\w)\nP3\n([1-9]\d{1,3}) ([1-9]\d{1,3})\n255\n/s or die; # ']);
+ m/^(\w+ \- \w[-+'"#! 0-9a-z]*)\nP3\n([1-9]\d{1,3}) ([1-9]\d{1,3})\n255\n/s or die; # ']);
my ($def,$w,$h)= ($1, $2+0, $3+0);
my @d= grep { m/./ } split /\s+/, $';
@d == $w*$h*3 or die "$d[0]|$d[1]|...|$d[$#d-1]|$d[$#d] ?";
$ppm .= "\n";
}
- ppmtopgm | pnmscale -width 79 | pnmnorm -bpercent 40 -wpercent 10 | pgmtopbm -threshold
+ my $summary= pipeval($ppm,
+ 'set -x; cat >&2',
+ 'ppmtopgm',
+ 'pnmscale -width 79',
+ 'pnmnorm -bpercent 40 -wpercent 10',
+ 'pgmtopbm -threshold');
+ print STDERR ">$summary<\n";
+
- <ship-ahoy.ppm ppmtopgm | pnmscale -width 79 | pnmnorm -bpercent 40 -wpercent 10 | pgmtopbm -threshold | pbmtoascii | cut -c1-79
+# <ship-ahoy.ppm ppmtopgm | pnmscale -width 79 | pnmnorm -bpercent 40 -wpercent 10 | pgmtopbm -threshold | pbmtoascii | cut -c1-79
my $entry= "$def\n$ppm";
return ('',$def,$entry);
#---------- characters ----------
+#---------- useful stuff ----------
+
+sub pipeval ($@) {
+ my ($val, @cmds) = @_;
+ my (@pids);
+
+ my $paste_child= open PIPEVAL_PASTE, "-|";
+ defined $paste_child or die $!;
+ if (!$paste_child) { print $val or die $!; exit 0; }
+
+ my $f= 'PIPEVAL_PASTE';
+
+$_=<$f>;
+print STDERR ">$_<\n";
+
+ foreach my $cmd (@cmds) {
+ my $newf;
+print STDERR "$cmd | $f\n";
+ push @pids, open2($newf, "<& $f", $cmd);
+# if (@pids>1) { close $f or die $!; }
+print STDERR "$cmd | $f $newf @pids\n";
+ $f= $newf;
+ }
+
+ $!=0; { local ($/)=undef; $val= <$f>; }
+ defined $val or die $!;
+ $f->error and die $!; close $f or die $!;
+
+ waitpid($paste_child,0) == $paste_child or die "paste $? $!";
+ $?==0 or $?==13 or die "paste $?";
+ close PIPEVAL_PASTE or die $!;
+
+ foreach my $cmd (@cmds) {
+ my $pid= shift @pids;
+ waitpid($pid,0) == $pid or die "$pid $? $!";
+ $?==0 or $?==13 or die "$cmd $?";
+ }
+ return $val;
+}
+
#---------- main program ----------
my $path= path_info();
die "$path ?";
}
-my ($ctx,$def,$entry)= ${"parseentryin__$kind"}($entry_in);
+my ($ctx,$def,$entry)= &{"parseentryin__$kind"}($entry_in);
my $summary= <<END
To: $owner
END
;
-
-
-
- print $entry or die $!;
-} else {
- die "$path ?";
-}
-