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|
#!/usr/bin/perl
=head1 NAME
vidir - edit directory
=head1 SYNOPSIS
B<vidir> [--verbose] [directory|file|-] ...
=head1 DESCRIPTION
vidir allows editing of the contents of a directory in a text editor. If no
directory is specified, the current directory is edited.
When editing a directory, each item in the directory will appear on its own
numbered line. These numbers are how vidir keeps track of what items are
changed. Delete lines to remove files from the directory, or
edit filenames to rename files. You can also switch pairs of numbers to
swap filenames.
Note that if "-" is specified as the directory to edit, it reads a list of
filenames from stdin and displays those for editing. Alternatively, a list
of files can be specified on the command line.
=head1 OPTIONS
=over 4
=item -v, --verbose
Verbosely display the actions taken by the program.
=back
=head1 ENVIRONMENT VARIABLES
=over 4
=item EDITOR
Editor to use.
=item VISUAL
Also supported to determine what editor to use.
=back
=head1 BUGS
Does not support deletion of directories. Does not support recursive
editing of contents of a directory.
=head1 AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net>
Licensed under the GNU GPL.
=cut
use File::Spec;
use File::Temp;
use Getopt::Long;
my $error=0;
my $verbose=0;
if (! GetOptions("verbose|v" => \$verbose)) {
die "Usage: $0 [--verbose] [directory|file|-]\n";
}
my @dir;
if (! @ARGV) {
push @ARGV, "."
}
foreach my $item (@ARGV) {
if ($item eq "-") {
push @dir, map { chomp; $_ } <STDIN>;
close STDIN;
open(STDIN, "/dev/tty") || die "reopen: $!\n";
}
elsif (-d $item) {
opendir(DIR, $item) || die "$0: cannot read $item: $!\n";
push @dir, map { "$item/$_" } sort readdir(DIR);
closedir DIR;
}
else {
push @dir, $item;
}
}
my $tmp=File::Temp->new(TEMPLATE => "dirXXXXX", DIR => File::Spec->tmpdir);
open (OUT, ">".$tmp->filename) || die "$0: cannot write ".$tmp->filename.": $!\n";
my %item;
my $c=0;
foreach (@dir) {
next if /^(.*\/)?\.$/ || /^(.*\/)?\.\.$/;
$item{++$c}=$_;
print OUT "$c\t$_\n";
}
@dir=();
close OUT;
my @editor="vi";
if (-x "/usr/bin/editor") {
@editor="/usr/bin/editor";
}
if (exists $ENV{EDITOR}) {
@editor=split(' ', $ENV{EDITOR});
}
if (exists $ENV{VISUAL}) {
@editor=split(' ', $ENV{VISUAL});
}
$ret=system(@editor, $tmp);
if ($ret != 0) {
die "@editor exited nonzero, aborting\n";
}
open (IN, $tmp->filename) || die "$0: cannot read ".$tmp->filename.": $!\n";
while (<IN>) {
chomp;
if (/^(\d+)\t{0,1}(.*)/) {
my $num=int($1);
my $name=$2;
if (! exists $item{$num}) {
die "$0: unknown item number $num\n";
}
elsif ($name ne $item{$num}) {
next unless length $name;
my $src=$item{$num};
# deal with swaps
if (-e $name || -l $name) {
my $tmp=$name."~";
my $c=0;
while (-e $tmp || -l $tmp) {
$c++;
$tmp=$name."~$c";
}
if (! rename($name, $tmp)) {
print STDERR "$0: failed to rename $name to $tmp: $!\n";
$error=1;
}
elsif ($verbose) {
print "'$name' -> '$tmp'\n";
}
foreach my $item (keys %item) {
if ($item{$item} eq $name) {
$item{$item}=$tmp;
}
}
}
if (! rename($src, $name)) {
print STDERR "$0: failed to rename $src to $name: $!\n";
$error=1;
}
elsif ($verbose) {
print "'$src' -> '$name'\n";
}
}
delete $item{$num};
}
elsif (/^\s*$/) {
# skip empty line
}
else {
die "$0: unable to parse line \"$_\", aborting\n";
}
}
close IN;
unlink($tmp.'~') if -e $tmp.'~';
foreach my $item (sort values %item) {
if (! unlink($item)) {
print STDERR "$0: failed to remove $item: $!\n";
$error=1;
}
if ($verbose) {
print "removed '$item'\n";
}
}
exit $error;
|
