Whatpm/CSS/SelectorsSerializer.pm

package Whatpm::CSS::SelectorsSerializer;
use strict;
our $VERSION=do{my @r=(q$Revision: 1.3 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};

use Whatpm::CSS::SelectorsParser qw(:selector :combinator :match);

sub serialize_test ($$$) {
  my (undef, $selectors, $ns) = @_;
  $ns ||= {};
  my $i = 0;
  my $ident = sub {
    my $s = shift;
    $s =~ s{([^A-Za-z_0-9\x80-\x{D7FF}\x{E000}-\x{10FFFF}-])}{
      my $v = ord $1;
      sprintf '\\%06X',$v > 0x10FFFF ? 0xFFFFFF : $v;
    }ge;
    $s =~ s/^([0-9])/\\00003$1/g;
    $s =~ s/^-([^A-Za-z\x80-\x{D7FF}\x{E000}-\x{10FFFF}_])/\\00002D$1/g;
    $s = '\\00002D' if $s eq '-';
    return $s;
  }; # $ident
  my $str = sub {
    my $s = shift;
    $s =~ s{([^\x20\x21\x23-\x5B\x5D-\x{D7FF}\x{E000}-\x{10FFFF}])}{
      my $v = ord $1;
      sprintf '\\%06X',$v > 0x10FFFF ? 0xFFFFFF : $v;
    }ge;
    return '"'.$s.'"';
  }; # $str
  my $r = join ",\n", map {
    join "", map {
      if (ref $_) {
        my $ss = [];
        $ss->[LOCAL_NAME_SELECTOR] = [LOCAL_NAME_SELECTOR, undef];
        for my $s (@$_) {
          if ($s->[0] == NAMESPACE_SELECTOR or
              $s->[0] == LOCAL_NAME_SELECTOR) {
            $ss->[$s->[0]] = $s;
          } else {
            push @{$ss->[$s->[0]] ||= []}, $s;
          }
        }
        
        my $v = '';
        if (not defined $ss->[NAMESPACE_SELECTOR]) {
          $v .= '*|';
        } elsif (defined $ss->[NAMESPACE_SELECTOR]->[1]) {
          unless (defined $ns->{$ss->[NAMESPACE_SELECTOR]->[1]}) {
            $ns->{$ss->[NAMESPACE_SELECTOR]->[1]} = 'n' . ++$i;
          }
          $v .= $ns->{$ss->[NAMESPACE_SELECTOR]->[1]} . '|';
        } else {
          $v .= '|';
        }

        if (defined $ss->[LOCAL_NAME_SELECTOR]->[1]) {
          $v .= $ident->($ss->[LOCAL_NAME_SELECTOR]->[1]);
        } else {
          $v .= '*';
        }

        ## BUG: sorting order is wrong (see editor's comment in the spec)
        $v .= join '', sort {$a cmp $b} map {
          '[' .
          (defined $_->[1] ?
            $_->[1] eq '' ? '' : ($ns->{$_->[1]} ||= 'n'.++$i) : '*') .
          '|' .
          $ident->($_->[2]) .
          ($_->[3] != EXISTS_MATCH ?
            {EQUALS_MATCH, '=',
             INCLUDES_MATCH, '~=',
             DASH_MATCH, '|=',
             PREFIX_MATCH, '^=',
             SUFFIX_MATCH, '$=',
             SUBSTRING_MATCH, '*='}->{$_->[3]} .
            $str->($_->[4])
          : '') .
          ']';
        } @{$ss->[ATTRIBUTE_SELECTOR] || []};

        $v .= join '', sort {$a cmp $b} map {
          '.' . $ident->($_->[1]);
        } @{$ss->[CLASS_SELECTOR] || []};

        $v .= join '', sort {$a cmp $b} map {
          '#' . $ident->($_->[1]);
        } @{$ss->[ID_SELECTOR] || []};

        $v .= join '', sort {$a cmp $b} map {
          my $v = $_;
          if ($v->[1] eq 'lang') {
            ':lang(' . $ident->($v->[2]) . ')';
          } elsif ($v->[1] eq 'not') {
            my $v = Whatpm::CSS::SelectorsSerializer->serialize_test
                ([[DESCENDANT_COMBINATOR, [@{$v}[2..$#{$v}]]]], $ns);
            $v =~ s/^    \*\|\*(?!$)/    /;
            ":not(\n    " . $v . "    )";
          } elsif ({'nth-child' => 1,
                    'nth-last-child' => 1,
                    'nth-of-type' => 1,
                    'nth-last-of-type' => 1}->{$v->[1]}) {
            ':' . $ident->($v->[1]) . '(' .
            ($v->[2] . 'n' . ($v->[3] < 0 ? $v->[3] : '+' . $v->[3])) . ')';
          } elsif ($v->[1] eq '-manakai-contains') {
            ':-manakai-contains(' . $str->($v->[2]) . ')';
          } else {
            ':' . $ident->($v->[1]);
          }
        } @{$ss->[PSEUDO_CLASS_SELECTOR] || []};

        $v .= join '', sort {$a cmp $b} map {
          '::' . $ident->($_->[1]);
        } @{$ss->[PSEUDO_ELEMENT_SELECTOR] || []};

        $v . "\n";
      } else {
        "  " . {
          DESCENDANT_COMBINATOR, ' ',
          CHILD_COMBINATOR, '>',
          ADJACENT_SIBLING_COMBINATOR, '+',
          GENERAL_SIBLING_COMBINATOR, '~',
        }->{$_} . " ";
      }
    } @$_;
  } @$selectors;  

  return wantarray ? ($r, join '', map {
    '@namespace ' . $ns->{$_} . ' ' . $str->($_) . ";\n";
  } sort {$a cmp $b} keys %$ns) : $r;
} # serialize_test


=head1 LICENSE

Copyright 2007 Wakaba <[email protected]>

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

=cut

1;
# $Date: 2007/10/17 10:46:26 $
1	wakaba	1.1	package Whatpm::CSS::SelectorsSerializer;
2			use strict;
3	wakaba	1.4	our $VERSION=do{my @r=(q$Revision: 1.3 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
4	wakaba	1.1
5			use Whatpm::CSS::SelectorsParser qw(:selector :combinator :match);
6
7			sub serialize_test ($$$) {
8			my (undef, $selectors, $ns) = @_;
9			$ns \|\|= {};
10			my $i = 0;
11			my $ident = sub {
12			my $s = shift;
13			$s =~ s{([^A-Za-z_0-9\x80-\x{D7FF}\x{E000}-\x{10FFFF}-])}{
14			my $v = ord $1;
15			sprintf '\\%06X',$v > 0x10FFFF ? 0xFFFFFF : $v;
16			}ge;
17			$s =~ s/^([0-9])/\\00003$1/g;
18	wakaba	1.4	$s =~ s/^-([^A-Za-z\x80-\x{D7FF}\x{E000}-\x{10FFFF}_])/\\00002D$1/g;
19			$s = '\\00002D' if $s eq '-';
20	wakaba	1.1	return $s;
21	wakaba	1.4	}; # $ident
22	wakaba	1.1	my $str = sub {
23			my $s = shift;
24			$s =~ s{([^\x20\x21\x23-\x5B\x5D-\x{D7FF}\x{E000}-\x{10FFFF}])}{
25			my $v = ord $1;
26			sprintf '\\%06X',$v > 0x10FFFF ? 0xFFFFFF : $v;
27			}ge;
28			return '"'.$s.'"';
29			}; # $str
30			my $r = join ",\n", map {
31			join "", map {
32			if (ref $_) {
33			my $ss = [];
34			$ss->[LOCAL_NAME_SELECTOR] = [LOCAL_NAME_SELECTOR, undef];
35			for my $s (@$_) {
36			if ($s->[0] == NAMESPACE_SELECTOR or
37			$s->[0] == LOCAL_NAME_SELECTOR) {
38			$ss->[$s->[0]] = $s;
39			} else {
40			push @{$ss->[$s->[0]] \|\|= []}, $s;
41			}
42			}
43
44			my $v = '';
45			if (not defined $ss->[NAMESPACE_SELECTOR]) {
46			$v .= '*\|';
47			} elsif (defined $ss->[NAMESPACE_SELECTOR]->[1]) {
48			unless (defined $ns->{$ss->[NAMESPACE_SELECTOR]->[1]}) {
49			$ns->{$ss->[NAMESPACE_SELECTOR]->[1]} = 'n' . ++$i;
50			}
51			$v .= $ns->{$ss->[NAMESPACE_SELECTOR]->[1]} . '\|';
52			} else {
53			$v .= '\|';
54			}
55
56			if (defined $ss->[LOCAL_NAME_SELECTOR]->[1]) {
57			$v .= $ident->($ss->[LOCAL_NAME_SELECTOR]->[1]);
58			} else {
59			$v .= '*';
60			}
61
62	wakaba	1.3	## BUG: sorting order is wrong (see editor's comment in the spec)
63	wakaba	1.1	$v .= join '', sort {$a cmp $b} map {
64			'[' .
65			(defined $_->[1] ?
66			$_->[1] eq '' ? '' : ($ns->{$_->[1]} \|\|= 'n'.++$i) : '*') .
67			'\|' .
68			$ident->($_->[2]) .
69			($_->[3] != EXISTS_MATCH ?
70			{EQUALS_MATCH, '=',
71			INCLUDES_MATCH, '~=',
72			DASH_MATCH, '\|=',
73			PREFIX_MATCH, '^=',
74			SUFFIX_MATCH, '$=',
75			SUBSTRING_MATCH, '*='}->{$_->[3]} .
76			$str->($_->[4])
77			: '') .
78			']';
79			} @{$ss->[ATTRIBUTE_SELECTOR] \|\| []};
80
81			$v .= join '', sort {$a cmp $b} map {
82			'.' . $ident->($_->[1]);
83			} @{$ss->[CLASS_SELECTOR] \|\| []};
84
85			$v .= join '', sort {$a cmp $b} map {
86			'#' . $ident->($_->[1]);
87			} @{$ss->[ID_SELECTOR] \|\| []};
88
89			$v .= join '', sort {$a cmp $b} map {
90			my $v = $_;
91			if ($v->[1] eq 'lang') {
92			':lang(' . $ident->($v->[2]) . ')';
93			} elsif ($v->[1] eq 'not') {
94			my $v = Whatpm::CSS::SelectorsSerializer->serialize_test
95			([[DESCENDANT_COMBINATOR, [@{$v}[2..$#{$v}]]]], $ns);
96			$v =~ s/^ \\\|\(?!$)/ /;
97			":not(\n " . $v . " )";
98			} elsif ({'nth-child' => 1,
99			'nth-last-child' => 1,
100			'nth-of-type' => 1,
101			'nth-last-of-type' => 1}->{$v->[1]}) {
102			':' . $ident->($v->[1]) . '(' .
103			($v->[2] . 'n' . ($v->[3] < 0 ? $v->[3] : '+' . $v->[3])) . ')';
104	wakaba	1.2	} elsif ($v->[1] eq '-manakai-contains') {
105			':-manakai-contains(' . $str->($v->[2]) . ')';
106	wakaba	1.1	} else {
107			':' . $ident->($v->[1]);
108			}
109			} @{$ss->[PSEUDO_CLASS_SELECTOR] \|\| []};
110
111			$v .= join '', sort {$a cmp $b} map {
112			'::' . $ident->($_->[1]);
113			} @{$ss->[PSEUDO_ELEMENT_SELECTOR] \|\| []};
114
115			$v . "\n";
116			} else {
117			" " . {
118			DESCENDANT_COMBINATOR, ' ',
119			CHILD_COMBINATOR, '>',
120			ADJACENT_SIBLING_COMBINATOR, '+',
121			GENERAL_SIBLING_COMBINATOR, '~',
122			}->{$_} . " ";
123			}
124			} @$_;
125			} @$selectors;
126
127			return wantarray ? ($r, join '', map {
128			'@namespace ' . $ns->{$_} . ' ' . $str->($_) . ";\n";
129			} sort {$a cmp $b} keys %$ns) : $r;
130			} # serialize_test
131
132	wakaba	1.3
133			=head1 LICENSE
134
135			Copyright 2007 Wakaba <[email protected]>
136
137			This library is free software; you can redistribute it
138			and/or modify it under the same terms as Perl itself.
139
140			=cut
141
142	wakaba	1.1	1;
143	wakaba	1.4	# $Date: 2007/10/17 10:46:26 $