1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
#require 'coderay/common_patterns'
module CodeRay module Scanners
# HTML Scanner
class HTML < Scanner
include Streamable
register_for :html
ATTR_NAME = /[\w.:-]+/
ATTR_VALUE_UNQUOTED = ATTR_NAME
TAG_END = /\/?>/
HEX = /[0-9a-fA-F]/
ENTITY = /
&
(?:
\w+
|
\#
(?:
\d+
|
x#{HEX}+
)
)
;
/ox
private
def scan_tokens tokens, options
state = :initial
until eos?
kind = :error
match = nil
if scan(/\s+/m)
kind = :space
else
case state
when :initial
if scan(/<!--.*?-->/m)
kind = :comment
elsif scan(/<!DOCTYPE.*?>/m)
kind = :preprocessor
elsif scan(/<\?xml.*?\?>/m)
kind = :preprocessor
elsif scan(/<\?.*?\?>|<%.*?%>/m)
kind = :comment
elsif scan(/<\/[-\w_.:]*>/m)
kind = :tag
elsif match = scan(/<[-\w_.:]*/m)
kind = :tag
if match?(/>/)
match << getch
else
state = :attribute
end
elsif scan(/[^<>&]+/)
kind = :plain
elsif scan(/#{ENTITY}/ox)
kind = :char
elsif scan(/>/)
kind = :error
else
raise_inspect '[BUG] else-case reached with state %p' % [state], tokens
end
when :attribute
if scan(/#{TAG_END}/)
kind = :tag
state = :initial
elsif scan(/#{ATTR_NAME}/o)
kind = :attribute_name
state = :attribute_equal
end
when :attribute_equal
if scan(/=/)
kind = :operator
state = :attribute_value
elsif scan(/#{ATTR_NAME}/o)
kind = :attribute_name
elsif scan(/#{TAG_END}/o)
kind = :tag
state = :initial
elsif scan(/./)
state = :attribute
end
when :attribute_value
if scan(/#{ATTR_VALUE_UNQUOTED}/o)
kind = :attribute_value
state = :attribute
elsif scan(/"/)
tokens << [:open, :string]
state = :attribute_value_string
kind = :delimiter
elsif scan(/#{TAG_END}/o)
kind = :tag
state = :initial
end
when :attribute_value_string
if scan(/[^"&\n]+/)
kind = :content
elsif scan(/"/)
tokens << ['"', :delimiter]
tokens << [:close, :string]
state = :attribute
next
elsif scan(/#{ENTITY}/ox)
kind = :char
elsif match(/\n/)
tokens << [:close, :string]
state = :attribute
next
end
else
raise_inspect 'Unknown state: %p' % [state], tokens
end
end
match ||= matched
if $DEBUG and (not kind or kind == :error)
raise_inspect 'Error token %p in line %d' %
[[match, kind], line], tokens
end
raise_inspect 'Empty token', tokens unless match
tokens << [match, kind]
end
tokens
end
end
end end
|
