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|
use strict;
use warnings;
package Mail::Box::Parser;
use vars '$VERSION';
$VERSION = '2.068';
use base 'Mail::Reporter';
use Carp;
sub new(@)
{ my $class = shift;
$class eq __PACKAGE__
? $class->defaultParserType->new(@_) # bootstrap right parser
: $class->SUPER::new(@_);
}
sub init(@)
{ my ($self, $args) = @_;
$self->SUPER::init($args);
$self->{MBP_mode} = $args->{mode} || 'r';
unless($self->{MBP_filename} = $args->{filename} || ref $args->{file})
{ $self->log(ERROR => "Filename or handle required to create a parser.");
return;
}
$self->start(file => $args->{file});
}
#------------------------------------------
sub start(@)
{ my $self = shift;
my %args = (@_, filename => $self->filename, mode => $self->{MBP_mode});
$self->openFile(\%args)
or return;
$self->takeFileInfo;
$self->log(PROGRESS => "Opened folder $args{filename} to be parsed");
$self;
}
#------------------------------------------
sub stop()
{ my $self = shift;
my $filename = $self->filename;
# $self->log(WARNING => "File $filename changed during access.")
# if $self->fileChanged;
$self->log(NOTICE => "Close parser for file $filename");
$self->closeFile;
}
#------------------------------------------
sub restart()
{ my $self = shift;
my $filename = $self->filename;
$self->closeFile or return;
$self->openFile( {filename => $filename, mode => $self->{MBP_mode}} )
or return;
$self->takeFileInfo;
$self->log(NOTICE => "Restarted parser for file $filename");
$self;
}
#------------------------------------------
sub fileChanged()
{ my $self = shift;
my ($size, $mtime) = (stat $self->filename)[7,9];
return 0 if !defined $size || !defined $mtime;
$size != $self->{MBP_size} || $mtime != $self->{MBP_mtime};
}
#------------------------------------------
sub filename() {shift->{MBP_filename}}
#------------------------------------------
sub filePosition(;$) {shift->NotImplemented}
#------------------------------------------
sub pushSeparator($) {shift->notImplemented}
#------------------------------------------
sub popSeparator($) {shift->notImplemented}
#------------------------------------------
sub readSeparator($) {shift->notImplemented}
#------------------------------------------
sub readHeader() {shift->notImplemented}
#------------------------------------------
sub bodyAsString() {shift->notImplemented}
#------------------------------------------
sub bodyAsList() {shift->notImplemented}
#------------------------------------------
sub bodyAsFile() {shift->notImplemented}
#------------------------------------------
sub bodyDelayed() {shift->notImplemented}
#------------------------------------------
sub lineSeparator() {shift->{MBP_linesep}}
#------------------------------------------
sub openFile(@) {shift->notImplemented}
#------------------------------------------
sub closeFile(@) {shift->notImplemented}
#------------------------------------------
sub takeFileInfo()
{ my $self = shift;
@$self{ qw/MBP_size MBP_mtime/ } = (stat $self->filename)[7,9];
}
#------------------------------------------
my $parser_type;
sub defaultParserType(;$)
{ my $class = shift;
# Select the parser manually?
if(@_)
{ $parser_type = shift;
return $parser_type if $parser_type->isa( __PACKAGE__ );
confess "Parser $parser_type does not extend "
. __PACKAGE__ . "\n";
}
# Already determined which parser we want?
return $parser_type if $parser_type;
# Try to use C-based parser.
eval 'require Mail::Box::Parser::C';
# warn "C-PARSER errors $@\n" if $@;
return $parser_type = 'Mail::Box::Parser::C'
unless $@;
# Fall-back on Perl-based parser.
require Mail::Box::Parser::Perl;
$parser_type = 'Mail::Box::Parser::Perl';
}
#------------------------------------------
sub DESTROY
{ my $self = shift;
$self->stop;
$self->SUPER::DESTROY;
}
#------------------------------------------
1;
|
