Whatpm/CSS/SelectorsSerializer.pm

package Whatpm::CSS::SelectorsSerializer;
use strict;
our $VERSION=do{my @r=(q$Revision: 1.5 $=~/\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_])/\\00002D$1/g;
    return $s;
  }; # $str
  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;
# $Date:$
1	wakaba	1.1	package Whatpm::CSS::SelectorsSerializer;
2			use strict;
3	wakaba	1.3	our $VERSION=do{my @r=(q$Revision: 1.5 $=~/\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			$s =~ s/^-([^A-Za-z_])/\\00002D$1/g;
19			return $s;
20			}; # $str
21			my $str = sub {
22			my $s = shift;
23			$s =~ s{([^\x20\x21\x23-\x5B\x5D-\x{D7FF}\x{E000}-\x{10FFFF}])}{
24			my $v = ord $1;
25			sprintf '\\%06X',$v > 0x10FFFF ? 0xFFFFFF : $v;
26			}ge;
27			return '"'.$s.'"';
28			}; # $str
29			my $r = join ",\n", map {
30			join "", map {
31			if (ref $_) {
32			my $ss = [];
33			$ss->[LOCAL_NAME_SELECTOR] = [LOCAL_NAME_SELECTOR, undef];
34			for my $s (@$_) {
35			if ($s->[0] == NAMESPACE_SELECTOR or
36			$s->[0] == LOCAL_NAME_SELECTOR) {
37			$ss->[$s->[0]] = $s;
38			} else {
39			push @{$ss->[$s->[0]] \|\|= []}, $s;
40			}
41			}
42
43			my $v = '';
44			if (not defined $ss->[NAMESPACE_SELECTOR]) {
45			$v .= '*\|';
46			} elsif (defined $ss->[NAMESPACE_SELECTOR]->[1]) {
47			unless (defined $ns->{$ss->[NAMESPACE_SELECTOR]->[1]}) {
48			$ns->{$ss->[NAMESPACE_SELECTOR]->[1]} = 'n' . ++$i;
49			}
50			$v .= $ns->{$ss->[NAMESPACE_SELECTOR]->[1]} . '\|';
51			} else {
52			$v .= '\|';
53			}
54
55			if (defined $ss->[LOCAL_NAME_SELECTOR]->[1]) {
56			$v .= $ident->($ss->[LOCAL_NAME_SELECTOR]->[1]);
57			} else {
58			$v .= '*';
59			}
60
61	wakaba	1.3	## BUG: sorting order is wrong (see editor's comment in the spec)
62	wakaba	1.1	$v .= join '', sort {$a cmp $b} map {
63			'[' .
64			(defined $_->[1] ?
65			$_->[1] eq '' ? '' : ($ns->{$_->[1]} \|\|= 'n'.++$i) : '*') .
66			'\|' .
67			$ident->($_->[2]) .
68			($_->[3] != EXISTS_MATCH ?
69			{EQUALS_MATCH, '=',
70			INCLUDES_MATCH, '~=',
71			DASH_MATCH, '\|=',
72			PREFIX_MATCH, '^=',
73			SUFFIX_MATCH, '$=',
74			SUBSTRING_MATCH, '*='}->{$_->[3]} .
75			$str->($_->[4])
76			: '') .
77			']';
78			} @{$ss->[ATTRIBUTE_SELECTOR] \|\| []};
79
80			$v .= join '', sort {$a cmp $b} map {
81			'.' . $ident->($_->[1]);
82			} @{$ss->[CLASS_SELECTOR] \|\| []};
83
84			$v .= join '', sort {$a cmp $b} map {
85			'#' . $ident->($_->[1]);
86			} @{$ss->[ID_SELECTOR] \|\| []};
87
88			$v .= join '', sort {$a cmp $b} map {
89			my $v = $_;
90			if ($v->[1] eq 'lang') {
91			':lang(' . $ident->($v->[2]) . ')';
92			} elsif ($v->[1] eq 'not') {
93			my $v = Whatpm::CSS::SelectorsSerializer->serialize_test
94			([[DESCENDANT_COMBINATOR, [@{$v}[2..$#{$v}]]]], $ns);
95			$v =~ s/^ \\\|\(?!$)/ /;
96			":not(\n " . $v . " )";
97			} elsif ({'nth-child' => 1,
98			'nth-last-child' => 1,
99			'nth-of-type' => 1,
100			'nth-last-of-type' => 1}->{$v->[1]}) {
101			':' . $ident->($v->[1]) . '(' .
102			($v->[2] . 'n' . ($v->[3] < 0 ? $v->[3] : '+' . $v->[3])) . ')';
103	wakaba	1.2	} elsif ($v->[1] eq '-manakai-contains') {
104			':-manakai-contains(' . $str->($v->[2]) . ')';
105	wakaba	1.1	} else {
106			':' . $ident->($v->[1]);
107			}
108			} @{$ss->[PSEUDO_CLASS_SELECTOR] \|\| []};
109
110			$v .= join '', sort {$a cmp $b} map {
111			'::' . $ident->($_->[1]);
112			} @{$ss->[PSEUDO_ELEMENT_SELECTOR] \|\| []};
113
114			$v . "\n";
115			} else {
116			" " . {
117			DESCENDANT_COMBINATOR, ' ',
118			CHILD_COMBINATOR, '>',
119			ADJACENT_SIBLING_COMBINATOR, '+',
120			GENERAL_SIBLING_COMBINATOR, '~',
121			}->{$_} . " ";
122			}
123			} @$_;
124			} @$selectors;
125
126			return wantarray ? ($r, join '', map {
127			'@namespace ' . $ns->{$_} . ' ' . $str->($_) . ";\n";
128			} sort {$a cmp $b} keys %$ns) : $r;
129			} # serialize_test
130
131	wakaba	1.3
132			=head1 LICENSE
133
134			Copyright 2007 Wakaba <[email protected]>
135
136			This library is free software; you can redistribute it
137			and/or modify it under the same terms as Perl itself.
138
139			=cut
140
141	wakaba	1.1	1;
142	wakaba	1.3	# $Date:$