scripts using 3/12 sam command pipe?

[Ed Kubaitis - CCSO <ejk@ux2.cso.uiuc.edu>]

Here's a pretty obvious one. Anyone else have one to share?

Ed
===============================================================================
#! /usr/local/bin/perl
#
#   samtag - generate Sam commands from ctags(1) tags file
#
#   usage: !samtag tag     -OR-    (select-tag-with-mouse)
#                                  >samtag

$user = $ENV{'USER'};
$user = $ENV{'LOGNAME'} unless $user;
$user || die "samtag: no USER or LOGNAME environment variable.\n";

$pipe = ".sam.$user";
$pipe .= ".$ENV{'DISPLAY'}" if $ENV{'DISPLAY'};

$Pipe = "/tmp/$pipe";
$Pipe = "/usr/tmp/$pipe" unless -p $Pipe;
-p $Pipe || die "samtag: no sam pipe($pipe) in /tmp or /usr/tmp\n";

$Tag = shift;
$Tag = <STDIN> unless $Tag;
die "samtag: no tag specified." unless $Tag;

open(Tags, "tags") || die "samtag: tags: $!\n";
while(<Tags>) {
   /^([^\t]+)\t([^\t]+)\t(.+)$/;
   $tag = $1; $file =$2; $re =$3;
   last if $tag eq $Tag
   }
die "samtag: tag <$Tag> not found.\n" unless $tag eq $Tag;
$re =~ s/([()*[\]])/\\$1/g; # escape metacharacters in re

open(Pipe, ">$Pipe") || die "samtag: $Pipe: $!\n";
print Pipe "B $file\n$re\n";
close(Pipe);