114 lines
2.7 KiB
Perl
114 lines
2.7 KiB
Perl
package File::stat;
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use strict;
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BEGIN {
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use Exporter ();
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use vars qw(@EXPORT @EXPORT_OK %EXPORT_TAGS);
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@EXPORT = qw(stat lstat);
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@EXPORT_OK = qw( $st_dev $st_ino $st_mode
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$st_nlink $st_uid $st_gid
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$st_rdev $st_size
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$st_atime $st_mtime $st_ctime
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$st_blksize $st_blocks
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);
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%EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] );
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}
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use vars @EXPORT_OK;
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# Class::Struct forbids use of @ISA
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sub import { goto &Exporter::import }
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use Class::Struct qw(struct);
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struct 'File::stat' => [
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map { $_ => '$' } qw{
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dev ino mode nlink uid gid rdev size
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atime mtime ctime blksize blocks
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}
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];
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sub populate (@) {
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return unless @_;
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my $stob = new();
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@$stob = (
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$st_dev, $st_ino, $st_mode, $st_nlink, $st_uid, $st_gid, $st_rdev,
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$st_size, $st_atime, $st_mtime, $st_ctime, $st_blksize, $st_blocks )
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= @_;
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return $stob;
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}
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sub lstat ($) { populate(CORE::lstat(shift)) }
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sub stat ($) {
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my $arg = shift;
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my $st = populate(CORE::stat $arg);
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return $st if $st;
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no strict 'refs';
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require Symbol;
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return populate(CORE::stat \*{Symbol::qualify($arg)});
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}
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1;
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__END__
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=head1 NAME
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File::stat - by-name interface to Perl's built-in stat() functions
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=head1 SYNOPSIS
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use File::stat;
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$st = stat($file) or die "No $file: $!";
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if ( ($st->mode & 0111) && $st->nlink > 1) ) {
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print "$file is executable with lotsa links\n";
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}
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use File::stat qw(:FIELDS);
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stat($file) or die "No $file: $!";
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if ( ($st_mode & 0111) && $st_nlink > 1) ) {
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print "$file is executable with lotsa links\n";
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}
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=head1 DESCRIPTION
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This module's default exports override the core stat()
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and lstat() functions, replacing them with versions that return
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"File::stat" objects. This object has methods that
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return the similarly named structure field name from the
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stat(2) function; namely,
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dev,
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ino,
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mode,
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nlink,
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uid,
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gid,
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rdev,
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size,
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atime,
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mtime,
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ctime,
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blksize,
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and
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blocks.
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You may also import all the structure fields directly into your namespace
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as regular variables using the :FIELDS import tag. (Note that this still
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overrides your stat() and lstat() functions.) Access these fields as
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variables named with a preceding C<st_> in front their method names.
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Thus, C<$stat_obj-E<gt>dev()> corresponds to $st_dev if you import
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the fields.
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To access this functionality without the core overrides,
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pass the C<use> an empty import list, and then access
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function functions with their full qualified names.
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On the other hand, the built-ins are still available
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via the C<CORE::> pseudo-package.
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=head1 NOTE
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While this class is currently implemented using the Class::Struct
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module to build a struct-like class, you shouldn't rely upon this.
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=head1 AUTHOR
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Tom Christiansen
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