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package NDB::Util::File;
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::File->attributes(
path => sub { length > 0 },
);
sub new {
my $class = shift;
@_ % 2 == 0 or confess 0+@_;
my(%attr) = @_;
my $file = $class->SUPER::new(%attr);
$file->setpath($attr{path})
or $log->push, return undef;
return $file;
}
sub desc {
my $file = shift;
return $file->getpath;
}
sub getdir {
my $file = shift;
@_ == 0 or confess 0+@_;
my $dirpath = dirname($file->getpath);
my $dir = NDB::Util::Dir->new(path => $dirpath);
return $dir;
}
sub getlock {
my $file = shift;
@_ == 0 or confess 0+@_;
my $lock = NDB::Util::Lock->new(path => $file->getpath);
return $lock;
}
sub getbasename {
my $file = shift;
@_ == 0 or confess 0+@_;
return basename($file->getpath);
}
# make dir, unlink
sub mkdir {
my $file = shift;
@_ == 0 or confess 0+@_;
return $file->getdir->mkdir;
}
sub unlink {
my $file = shift;
@_ == 0 or confess 0+@_;
$log->put("remove")->push($file)->debug;
if (-e $file->getpath) {
if (! unlink($file->getpath)) {
my $errstr = "$!";
if (! -e $file->getpath) {
return 1;
}
$log->put("unlink failed: $errstr")->push($file);
return undef;
}
}
return 1;
}
# read /write
sub open {
my $file = shift;
@_ == 1 or confess 0+@_;
my($mode) = @_;
my $fh = gensym();
if (! open($fh, $mode.$file->getpath)) {
$log->put("open$mode failed")->push($file);
return undef;
}
my $io = NDB::Util::IO->new;
$io->setfh($fh)
or $log->push, return undef;
return $io;
}
sub puttext {
my $file = shift;
@_ == 1 or confess 0+@_;
my($text) = @_;
ref($text) and confess 'oops';
$file->mkdir
or $log->push, return undef;
$file->unlink
or $log->push, return undef;
my $io = $file->open(">")
or $log->push, return undef;
if (! $io->write($text)) {
$log->push($file);
$io->close;
return undef;
}
if (! $io->close) {
$log->push($file);
return undef;
}
return 1;
}
sub putlines {
my $file = shift;
@_ == 1 or confess 0+@_;
my($lines) = @_;
ref($lines) eq 'ARRAY' or confess 'oops';
my $text = join("\n", @$lines) . "\n";
$file->puttext($text) or $log->push, return undef;
return 1;
}
sub copyedit {
my $file1 = shift;
@_ == 2 or confess 0+@_;
my($file2, $edit) = @_;
my $io1 = $file1->open("<")
or $log->push, return undef;
my $io2 = $file2->open(">")
or $log->push, return undef;
local $_;
my $fh1 = $io1->getfh;
my $fh2 = $io2->getfh;
my $line = 0;
while (defined($_ = <$fh1>)) {
$line++;
if (! &$edit()) {
$log->push("line $line")->push($file1);
return undef;
}
print $fh2 $_;
}
$io1->close;
$io2->close;
return 1;
}
1;
# vim:set sw=4:
|
