vipe (1403B)
1 #!/usr/bin/perl 2 3 =head1 NAME 4 5 vipe - edit pipe 6 7 =head1 SYNOPSIS 8 9 command1 | vipe | command2 10 11 =head1 DESCRIPTION 12 13 vipe allows you to run your editor in the middle of a unix pipeline and 14 edit the data that is being piped between programs. Your editor will 15 have the full data being piped from command1 loaded into it, and when you 16 close it, that data will be piped into command2. 17 18 =head1 ENVIRONMENT VARIABLES 19 20 =over 4 21 22 =item EDITOR 23 24 Editor to use. 25 26 =item VISUAL 27 28 Also supported to determine what editor to use. 29 30 =back 31 32 =head1 AUTHOR 33 34 Copyright 2006 by Joey Hess <id@joeyh.name> 35 36 Licensed under the GNU GPL. 37 38 =cut 39 40 use warnings; 41 use strict; 42 use File::Temp q{tempfile}; 43 44 $/=undef; 45 46 my ($fh, $tmp)=tempfile(); 47 die "cannot create tempfile" unless $fh; 48 print ($fh <STDIN>) || die "write temp: $!"; 49 close $fh; 50 close STDIN; 51 open(STDIN, "</dev/tty") || die "reopen stdin: $!"; 52 open(OUT, ">&STDOUT") || die "save stdout: $!"; 53 close STDOUT; 54 open(STDOUT, ">/dev/tty") || die "reopen stdout: $!"; 55 56 my @editor="vi"; 57 if (-x "/usr/bin/editor") { 58 @editor="/usr/bin/editor"; 59 } 60 if (exists $ENV{EDITOR}) { 61 @editor=split(' ', $ENV{EDITOR}); 62 } 63 if (exists $ENV{VISUAL}) { 64 @editor=split(' ', $ENV{VISUAL}); 65 } 66 my $ret=system(@editor, $tmp); 67 if ($ret != 0) { 68 die "@editor exited nonzero, aborting\n"; 69 } 70 71 open (IN, $tmp) || die "$0: cannot read $tmp: $!\n"; 72 print (OUT <IN>) || die "write failure: $!"; 73 close IN; 74 unlink($tmp);