晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Directory :  /usr/share/perl5/IO/Uncompress/Adapter/

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Current File : //usr/share/perl5/IO/Uncompress/Adapter/Bunzip2.pm
package IO::Uncompress::Adapter::Bunzip2;

use strict;
use warnings;
use bytes;

use IO::Compress::Base::Common 2.081 qw(:Status);

use Compress::Raw::Bzip2 2.081 ;

our ($VERSION, @ISA);
$VERSION = '2.081';

sub mkUncompObject
{
    my $small     = shift || 0;
    my $verbosity = shift || 0;

    my ($inflate, $status) = new Compress::Raw::Bunzip2(1, 1, $small, $verbosity, 1);

    return (undef, "Could not create Inflation object: $status", $status)
        if $status != BZ_OK ;

    return bless {'Inf'           => $inflate,
                  'CompSize'      => 0,
                  'UnCompSize'    => 0,
                  'Error'         => '',
                  'ConsumesInput' => 1,
                 }  ;     
    
}

sub uncompr
{
    my $self = shift ;
    my $from = shift ;
    my $to   = shift ;
    my $eof  = shift ;

    my $inf   = $self->{Inf};

    my $status = $inf->bzinflate($from, $to);
    $self->{ErrorNo} = $status;

    if ($status != BZ_OK && $status != BZ_STREAM_END )
    {
        $self->{Error} = "Inflation Error: $status";
        return STATUS_ERROR;
    }

    
    return STATUS_OK        if $status == BZ_OK ;
    return STATUS_ENDSTREAM if $status == BZ_STREAM_END ;
    return STATUS_ERROR ;
}


sub reset
{
    my $self = shift ;

    my ($inf, $status) = new Compress::Raw::Bunzip2();
    $self->{ErrorNo} = ($status == BZ_OK) ? 0 : $status ;

    if ($status != BZ_OK)
    {
        $self->{Error} = "Cannot create Inflate object: $status"; 
        return STATUS_ERROR;
    }

    $self->{Inf} = $inf;

    return STATUS_OK ;
}

sub compressedBytes
{
    my $self = shift ;
    $self->{Inf}->compressedBytes();
}

sub uncompressedBytes
{
    my $self = shift ;
    $self->{Inf}->uncompressedBytes();
}

sub crc32
{
    my $self = shift ;
    #$self->{Inf}->crc32();
}

sub adler32
{
    my $self = shift ;
    #$self->{Inf}->adler32();
}

sub sync
{
    my $self = shift ;
    #( $self->{Inf}->inflateSync(@_) == BZ_OK) 
    #        ? STATUS_OK 
    #        : STATUS_ERROR ;
}


1;

__END__

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