/usr/share/perl5/File/Listing.pm is in libfile-listing-perl 6.04-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 | package File::Listing;
sub Version { $VERSION; }
$VERSION = "6.04";
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(parse_dir);
use strict;
use Carp ();
use HTTP::Date qw(str2time);
sub parse_dir ($;$$$)
{
my($dir, $tz, $fstype, $error) = @_;
$fstype ||= 'unix';
$fstype = "File::Listing::" . lc $fstype;
my @args = $_[0];
push(@args, $tz) if(@_ >= 2);
push(@args, $error) if(@_ >= 4);
$fstype->parse(@args);
}
sub line { Carp::croak("Not implemented yet"); }
sub init { } # Dummy sub
sub file_mode ($)
{
Carp::croak("Input to file_mode() must be a 10 character string.")
unless length($_[0]) == 10;
# This routine was originally borrowed from Graham Barr's
# Net::FTP package.
local $_ = shift;
my $mode = 0;
my($type);
s/^(.)// and $type = $1;
# When the set-group-ID bit (file mode bit 02000) is set, and the group
# execution bit (file mode bit 00020) is unset, and it is a regular file,
# some implementations of `ls' use the letter `S', others use `l' or `L'.
# Convert this `S'.
s/[Ll](...)$/S$1/;
while (/(.)/g) {
$mode <<= 1;
$mode |= 1 if $1 ne "-" &&
$1 ne 'S' &&
$1 ne 'T';
}
$mode |= 0004000 if /^..s....../i;
$mode |= 0002000 if /^.....s.../i;
$mode |= 0001000 if /^........t/i;
# De facto standard definitions. From 'stat.h' on Solaris 9.
$type eq "p" and $mode |= 0010000 or # fifo
$type eq "c" and $mode |= 0020000 or # character special
$type eq "d" and $mode |= 0040000 or # directory
$type eq "b" and $mode |= 0060000 or # block special
$type eq "-" and $mode |= 0100000 or # regular
$type eq "l" and $mode |= 0120000 or # symbolic link
$type eq "s" and $mode |= 0140000 or # socket
$type eq "D" and $mode |= 0150000 or # door
Carp::croak("Unknown file type: $type");
$mode;
}
sub parse
{
my($pkg, $dir, $tz, $error) = @_;
# First let's try to determine what kind of dir parameter we have
# received. We allow both listings, reference to arrays and
# file handles to read from.
if (ref($dir) eq 'ARRAY') {
# Already splitted up
}
elsif (ref($dir) eq 'GLOB') {
# A file handle
}
elsif (ref($dir)) {
Carp::croak("Illegal argument to parse_dir()");
}
elsif ($dir =~ /^\*\w+(::\w+)+$/) {
# This scalar looks like a file handle, so we assume it is
}
else {
# A normal scalar listing
$dir = [ split(/\n/, $dir) ];
}
$pkg->init();
my @files = ();
if (ref($dir) eq 'ARRAY') {
for (@$dir) {
push(@files, $pkg->line($_, $tz, $error));
}
}
else {
local($_);
while (<$dir>) {
chomp;
push(@files, $pkg->line($_, $tz, $error));
}
}
wantarray ? @files : \@files;
}
package File::Listing::unix;
use HTTP::Date qw(str2time);
# A place to remember current directory from last line parsed.
use vars qw($curdir @ISA);
@ISA = qw(File::Listing);
sub init
{
$curdir = '';
}
sub line
{
shift; # package name
local($_) = shift;
my($tz, $error) = @_;
s/\015//g;
#study;
my ($kind, $size, $date, $name);
if (($kind, $size, $date, $name) =
/^([\-FlrwxsStTdD]{10}) # Type and permission bits
.* # Graps
\D(\d+) # File size
\s+ # Some space
(\w{3}\s+\d+\s+(?:\d{1,2}:\d{2}|\d{4})|\d{4}-\d{2}-\d{2}\s+\d{2}:\d{2}) # Date
\s+ # Some more space
(.*)$ # File name
/x )
{
return if $name eq '.' || $name eq '..';
$name = "$curdir/$name" if length $curdir;
my $type = '?';
if ($kind =~ /^l/ && $name =~ /(.*) -> (.*)/ ) {
$name = $1;
$type = "l $2";
}
elsif ($kind =~ /^[\-F]/) { # (hopefully) a regular file
$type = 'f';
}
elsif ($kind =~ /^[dD]/) {
$type = 'd';
$size = undef; # Don't believe the reported size
}
return [$name, $type, $size, str2time($date, $tz),
File::Listing::file_mode($kind)];
}
elsif (/^(.+):$/ && !/^[dcbsp].*\s.*\s.*:$/ ) {
my $dir = $1;
return () if $dir eq '.';
$curdir = $dir;
return ();
}
elsif (/^[Tt]otal\s+(\d+)$/ || /^\s*$/) {
return ();
}
elsif (/not found/ || # OSF1, HPUX, and SunOS return
# "$file not found"
/No such file/ || # IRIX returns
# "UX:ls: ERROR: Cannot access $file: No such file or directory"
# Solaris returns
# "$file: No such file or directory"
/cannot find/ # Windows NT returns
# "The system cannot find the path specified."
) {
return () unless defined $error;
&$error($_) if ref($error) eq 'CODE';
warn "Error: $_\n" if $error eq 'warn';
return ();
}
elsif ($_ eq '') { # AIX, and Linux return nothing
return () unless defined $error;
&$error("No such file or directory") if ref($error) eq 'CODE';
warn "Warning: No such file or directory\n" if $error eq 'warn';
return ();
}
else {
# parse failed, check if the dosftp parse understands it
File::Listing::dosftp->init();
return(File::Listing::dosftp->line($_,$tz,$error));
}
}
package File::Listing::dosftp;
use HTTP::Date qw(str2time);
# A place to remember current directory from last line parsed.
use vars qw($curdir @ISA);
@ISA = qw(File::Listing);
sub init
{
$curdir = '';
}
sub line
{
shift; # package name
local($_) = shift;
my($tz, $error) = @_;
s/\015//g;
my ($date, $size_or_dir, $name, $size);
# 02-05-96 10:48AM 1415 src.slf
# 09-10-96 09:18AM <DIR> sl_util
if (($date, $size_or_dir, $name) =
/^(\d\d-\d\d-\d\d\s+\d\d:\d\d\wM) # Date and time info
\s+ # Some space
(<\w{3}>|\d+) # Dir or Size
\s+ # Some more space
(.+)$ # File name
/x )
{
return if $name eq '.' || $name eq '..';
$name = "$curdir/$name" if length $curdir;
my $type = '?';
if ($size_or_dir eq '<DIR>') {
$type = "d";
$size = ""; # directories have no size in the pc listing
}
else {
$type = 'f';
$size = $size_or_dir;
}
return [$name, $type, $size, str2time($date, $tz), undef];
}
else {
return () unless defined $error;
&$error($_) if ref($error) eq 'CODE';
warn "Can't parse: $_\n" if $error eq 'warn';
return ();
}
}
package File::Listing::vms;
@File::Listing::vms::ISA = qw(File::Listing);
package File::Listing::netware;
@File::Listing::netware::ISA = qw(File::Listing);
package File::Listing::apache;
use vars qw(@ISA);
@ISA = qw(File::Listing);
sub init { }
sub line {
shift; # package name
local($_) = shift;
my($tz, $error) = @_; # ignored for now...
s!</?t[rd][^>]*>! !g; # clean away various table stuff
if (m!<A\s+HREF=\"([^\"]+)\">.*</A>.*?(\d+)-([a-zA-Z]+|\d+)-(\d+)\s+(\d+):(\d+)\s+(?:([\d\.]+[kMG]?|-))!i) {
my($filename, $filesize) = ($1, $7);
my($d,$m,$y, $H,$M) = ($2,$3,$4,$5,$6);
if ($m =~ /^\d+$/) {
($d,$y) = ($y,$d) # iso date
}
else {
$m = _monthabbrev_number($m);
}
$filesize = 0 if $filesize eq '-';
if ($filesize =~ s/k$//i) {
$filesize *= 1024;
}
elsif ($filesize =~ s/M$//) {
$filesize *= 1024*1024;
}
elsif ($filesize =~ s/G$//) {
$filesize *= 1024*1024*1024;
}
$filesize = int $filesize;
require Time::Local;
my $filetime = Time::Local::timelocal(0,$M,$H,$d,$m-1,_guess_year($y)-1900);
my $filetype = ($filename =~ s|/$|| ? "d" : "f");
return [$filename, $filetype, $filesize, $filetime, undef];
}
return ();
}
sub _guess_year {
my $y = shift;
if ($y >= 90) {
$y = 1900+$y;
}
elsif ($y < 100) {
$y = 2000+$y;
}
$y;
}
sub _monthabbrev_number {
my $mon = shift;
+{'Jan' => 1,
'Feb' => 2,
'Mar' => 3,
'Apr' => 4,
'May' => 5,
'Jun' => 6,
'Jul' => 7,
'Aug' => 8,
'Sep' => 9,
'Oct' => 10,
'Nov' => 11,
'Dec' => 12,
}->{$mon};
}
1;
__END__
=head1 NAME
File::Listing - parse directory listing
=head1 SYNOPSIS
use File::Listing qw(parse_dir);
$ENV{LANG} = "C"; # dates in non-English locales not supported
for (parse_dir(`ls -l`)) {
($name, $type, $size, $mtime, $mode) = @$_;
next if $type ne 'f'; # plain file
#...
}
# directory listing can also be read from a file
open(LISTING, "zcat ls-lR.gz|");
$dir = parse_dir(\*LISTING, '+0000');
=head1 DESCRIPTION
This module exports a single function called parse_dir(), which can be
used to parse directory listings.
The first parameter to parse_dir() is the directory listing to parse.
It can be a scalar, a reference to an array of directory lines or a
glob representing a filehandle to read the directory listing from.
The second parameter is the time zone to use when parsing time stamps
in the listing. If this value is undefined, then the local time zone is
assumed.
The third parameter is the type of listing to assume. Currently
supported formats are 'unix', 'apache' and 'dosftp'. The default
value is 'unix'. Ideally, the listing type should be determined
automatically.
The fourth parameter specifies how unparseable lines should be treated.
Values can be 'ignore', 'warn' or a code reference. Warn means that
the perl warn() function will be called. If a code reference is
passed, then this routine will be called and the return value from it
will be incorporated in the listing. The default is 'ignore'.
Only the first parameter is mandatory.
The return value from parse_dir() is a list of directory entries. In
a scalar context the return value is a reference to the list. The
directory entries are represented by an array consisting of [
$filename, $filetype, $filesize, $filetime, $filemode ]. The
$filetype value is one of the letters 'f', 'd', 'l' or '?'. The
$filetime value is the seconds since Jan 1, 1970. The
$filemode is a bitmask like the mode returned by stat().
=head1 COPYRIGHT
Copyright 1996-2010, Gisle Aas
Based on lsparse.pl (from Lee McLoughlin's ftp mirror package) and
Net::FTP's parse_dir (Graham Barr).
This library is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
|