package File::stat; use 5.006; use strict; use warnings; our(@EXPORT, @EXPORT_OK, %EXPORT_TAGS); our $VERSION = '1.00'; BEGIN { use Exporter (); @EXPORT = qw(stat lstat); @EXPORT_OK = qw( $st_dev $st_ino $st_mode $st_nlink $st_uid $st_gid $st_rdev $st_size $st_atime $st_mtime $st_ctime $st_blksize $st_blocks ); %EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] ); } use vars @EXPORT_OK; # Class::Struct forbids use of @ISA sub import { goto &Exporter::import } use Class::Struct qw(struct); struct 'File::stat' => [ map { $_ => '$' } qw{ dev ino mode nlink uid gid rdev size atime mtime ctime blksize blocks } ]; sub populate (@) { return unless @_; my $stob = new(); @$stob = ( $st_dev, $st_ino, $st_mode, $st_nlink, $st_uid, $st_gid, $st_rdev, $st_size, $st_atime, $st_mtime, $st_ctime, $st_blksize, $st_blocks ) = @_; return $stob; } sub lstat ($) { populate(CORE::lstat(shift)) } sub stat ($) { my $arg = shift; my $st = populate(CORE::stat $arg); return $st if $st; my $fh; { local $!; no strict 'refs'; require Symbol; $fh = \*{ Symbol::qualify( $arg, caller() )}; return unless defined fileno $fh; } return populate(CORE::stat $fh); } 1; __END__ =head1 NAME File::stat - by-name interface to Perl's built-in stat() functions =head1 SYNOPSIS use File::stat; $st = stat($file) or die "No $file: $!"; if ( ($st->mode & 0111) && $st->nlink > 1) ) { print "$file is executable with lotsa links\n"; } use File::stat qw(:FIELDS); stat($file) or die "No $file: $!"; if ( ($st_mode & 0111) && $st_nlink > 1) ) { print "$file is executable with lotsa links\n"; } =head1 DESCRIPTION This module's default exports override the core stat() and lstat() functions, replacing them with versions that return "File::stat" objects. This object has methods that return the similarly named structure field name from the stat(2) function; namely, dev, ino, mode, nlink, uid, gid, rdev, size, atime, mtime, ctime, blksize, and blocks. You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your stat() and lstat() functions.) Access these fields as variables named with a preceding C in front their method names. Thus, C<$stat_obj-Edev()> corresponds to $st_dev if you import the fields. To access this functionality without the core overrides, pass the C an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the C pseudo-package. =head1 BUGS As of Perl 5.8.0 after using this module you cannot use the implicit C<$_> or the special filehandle C<_> with stat() or lstat(), trying to do so leads into strange errors. The workaround is for C<$_> to be explicit my $stat_obj = stat $_; and for C<_> to explicitly populate the object using the unexported and undocumented populate() function with CORE::stat(): my $stat_obj = File::stat::populate(CORE::stat(_)); =head1 NOTE While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. =head1 AUTHOR Tom Christiansen