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/URI/

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Current File : //usr/share/perl5/URI/_query.pm
package URI::_query;

use strict;
use warnings;

use URI ();
use URI::Escape qw(uri_unescape);

our $VERSION = '1.73';
$VERSION = eval $VERSION;

sub query
{
    my $self = shift;
    $$self =~ m,^([^?\#]*)(?:\?([^\#]*))?(.*)$,s or die;

    if (@_) {
	my $q = shift;
	$$self = $1;
	if (defined $q) {
	    $q =~ s/([^$URI::uric])/ URI::Escape::escape_char($1)/ego;
	    utf8::downgrade($q);
	    $$self .= "?$q";
	}
	$$self .= $3;
    }
    $2;
}

# Handle ...?foo=bar&bar=foo type of query
sub query_form {
    my $self = shift;
    my $old = $self->query;
    if (@_) {
        # Try to set query string
        my $delim;
        my $r = $_[0];
        if (ref($r) eq "ARRAY") {
            $delim = $_[1];
            @_ = @$r;
        }
        elsif (ref($r) eq "HASH") {
            $delim = $_[1];
            @_ = map { $_ => $r->{$_} } sort keys %$r;
        }
        $delim = pop if @_ % 2;

        my @query;
        while (my($key,$vals) = splice(@_, 0, 2)) {
            $key = '' unless defined $key;
	    $key =~ s/([;\/?:@&=+,\$\[\]%])/ URI::Escape::escape_char($1)/eg;
	    $key =~ s/ /+/g;
	    $vals = [ref($vals) eq "ARRAY" ? @$vals : $vals];
            for my $val (@$vals) {
                $val = '' unless defined $val;
		$val =~ s/([;\/?:@&=+,\$\[\]%])/ URI::Escape::escape_char($1)/eg;
                $val =~ s/ /+/g;
                push(@query, "$key=$val");
            }
        }
        if (@query) {
            unless ($delim) {
                $delim = $1 if $old && $old =~ /([&;])/;
                $delim ||= $URI::DEFAULT_QUERY_FORM_DELIMITER || "&";
            }
            $self->query(join($delim, @query));
        }
        else {
            $self->query(undef);
        }
    }
    return if !defined($old) || !length($old) || !defined(wantarray);
    return unless $old =~ /=/; # not a form
    map { s/\+/ /g; uri_unescape($_) }
         map { /=/ ? split(/=/, $_, 2) : ($_ => '')} split(/[&;]/, $old);
}

# Handle ...?dog+bones type of query
sub query_keywords
{
    my $self = shift;
    my $old = $self->query;
    if (@_) {
        # Try to set query string
	my @copy = @_;
	@copy = @{$copy[0]} if @copy == 1 && ref($copy[0]) eq "ARRAY";
	for (@copy) { s/([;\/?:@&=+,\$\[\]%])/ URI::Escape::escape_char($1)/eg; }
	$self->query(@copy ? join('+', @copy) : undef);
    }
    return if !defined($old) || !defined(wantarray);
    return if $old =~ /=/;  # not keywords, but a form
    map { uri_unescape($_) } split(/\+/, $old, -1);
}

# Some URI::URL compatibility stuff
sub equery { goto &query }

1;

haha - 2025