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|
package NDB::Util::Dir;
use strict;
use Carp;
use Symbol;
use Errno;
use File::Basename;
require NDB::Util::Base;
use vars qw(@ISA);
@ISA = qw(NDB::Util::Base);
# constructors
my $log;
sub initmodule {
$log = NDB::Util::Log->instance;
}
NDB::Util::Dir->attributes(
path => sub { length > 0 },
);
sub new {
my $class = shift;
@_ % 2 == 0 or confess 0+@_;
my(%attr) = @_;
my $dir = $class->SUPER::new(%attr);
$dir->setpath($attr{path})
or $log->push, return undef;
return $dir;
}
sub desc {
my $dir = shift;
return $dir->getpath;
}
sub getparent {
my $dir = shift;
@_ == 0 or confess 0+@_;
my $ppath = dirname($dir->getpath);
my $pdir = NDB::Util::Dir->new(path => $ppath);
return $pdir;
}
sub getdir {
my $dir = shift;
@_ == 1 or confess 0+@_;
my($name) = @_;
my $dirpath = $dir->getpath;
my $path = $dirpath eq '.' ? $name : File::Spec->catfile($dirpath, $name);
my $entry = NDB::Util::Dir->new(path => $path);
return $entry;
}
sub getfile {
my $dir = shift;
@_ == 1 or confess 0+@_;
my($name) = @_;
my $dirpath = $dir->getpath;
my $path = $dirpath eq '.' ? $name : File::Spec->catfile($dirpath, $name);
my $entry = NDB::Util::File->new(path => $path);
return $entry;
}
# list
sub listdirs {
my $dir = shift;
@_ == 0 or confess 0+@_;
my @list = ();
my $dirpath = $dir->getpath;
my $dh = gensym();
if (! opendir($dh, $dirpath)) {
$log->put("opendir failed: $!")->push($dir);
return undef;
}
while (defined(my $name = readdir($dh))) {
if ($name eq '.' || $name eq '..') {
next;
}
my $path = $dirpath eq '.' ? $name : "$dirpath/$name";
if (! -l $path && -d $path) {
my $dir2 = NDB::Util::Dir->new(path => $path)
or $log->push, return undef;
push(@list, $dir2);
}
}
close($dh);
return \@list;
}
sub listfiles {
my $dir = shift;
@_ == 0 or confess 0+@_;
my @list = ();
my $dirpath = $dir->getpath;
my $dh = gensym();
if (! opendir($dh, $dirpath)) {
$log->put("opendir failed: $!")->push($dir);
return undef;
}
while (defined(my $name = readdir($dh))) {
if ($name eq '.' || $name eq '..') {
next;
}
my $path = $dirpath eq '.' ? $name : "$dirpath/$name";
if (! -d $path && -e $path) {
my $file2 = NDB::Util::File->new(path => $path)
or $log->push, return undef;
push(@list, $file2);
}
}
close($dh);
return \@list;
}
# create / remove
sub mkdir {
my $dir = shift;
@_ == 0 or confess 0+@_;
if (! -d $dir->getpath) {
my $pdir = $dir->getparent;
if (length($pdir->getpath) >= length($dir->getpath)) {
$log->put("mkdir looping")->push($dir);
return undef;
}
$pdir->mkdir or return undef;
if (! mkdir($dir->getpath, 0777)) {
my $errstr = "$!";
if (-d $dir->getpath) {
return 1;
}
$log->put("mkdir failed: $errstr")->push($dir);
return undef;
}
}
return 1;
}
sub rmdir {
my $dir = shift;
my $keep = shift; # keep top level
$log->put("remove")->push($dir)->info;
my $list;
$list = $dir->listdirs or $log->push, return undef;
for my $d (@$list) {
$d->rmdir or $log->push, return undef;
}
$list = $dir->listfiles or $log->push, return undef;
for my $f (@$list) {
$f->unlink or $log->push, return undef;
}
if (! $keep && ! rmdir($dir->getpath)) {
my $errstr = "$!";
if (! -e $dir->getpath) {
return 1;
}
$log->put("rmdir failed: $errstr")->push($dir);
return undef;
}
return 1;
}
1;
# vim:set sw=4:
|
