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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NAME
    File::Listing - parse directory listing

SYNOPSIS
     use File::Listing qw(parse_dir);
     $ENV{LANG} = "C";  # dates in non-English locales not supported
     for (parse_dir(`ls -l`)) {
         ($name, $type, $size, $mtime, $mode) = @$_;
         next if $type ne 'f'; # plain file
         #...
     }

     # directory listing can also be read from a file
     open(LISTING, "zcat ls-lR.gz|");
     $dir = parse_dir(\*LISTING, '+0000');

DESCRIPTION
    This module exports a single function called parse_dir(), which can be
    used to parse directory listings.

    The first parameter to parse_dir() is the directory listing to parse. It
    can be a scalar, a reference to an array of directory lines or a glob
    representing a filehandle to read the directory listing from.

    The second parameter is the time zone to use when parsing time stamps in
    the listing. If this value is undefined, then the local time zone is
    assumed.

    The third parameter is the type of listing to assume. Currently
    supported formats are 'unix', 'apache' and 'dosftp'. The default value
    is 'unix'. Ideally, the listing type should be determined automatically.

    The fourth parameter specifies how unparseable lines should be treated.
    Values can be 'ignore', 'warn' or a code reference. Warn means that the
    perl warn() function will be called. If a code reference is passed, then
    this routine will be called and the return value from it will be
    incorporated in the listing. The default is 'ignore'.

    Only the first parameter is mandatory.

    The return value from parse_dir() is a list of directory entries. In a
    scalar context the return value is a reference to the list. The
    directory entries are represented by an array consisting of [ $filename,
    $filetype, $filesize, $filetime, $filemode ]. The $filetype value is one
    of the letters 'f', 'd', 'l' or '?'. The $filetime value is the seconds
    since Jan 1, 1970. The $filemode is a bitmask like the mode returned by
    stat().

COPYRIGHT
    Copyright 1996-2010, Gisle Aas

    Based on lsparse.pl (from Lee McLoughlin's ftp mirror package) and
    Net::FTP's parse_dir (Graham Barr).

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

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