Class: Condenser::SVGTransformer::Template

Inherits:
Object
  • Object
show all
Includes:
ParseHelpers
Defined in:
lib/condenser/transformers/svg_transformer/template.rb

Constant Summary collapse

START_TAGS =
['<']
CLOSE_TAGS =
['/>', '>']
VOID_ELEMENTS =
['!DOCTYPE', '?xml']

Instance Attribute Summary collapse

Attributes included from ParseHelpers

#matched

Instance Method Summary collapse

Methods included from ParseHelpers

#current_line, #cursor, #eos?, #forward, #gobble, #next_word, #pre_match, #rewind, #scan_until, #seek

Constructor Details

#initialize(source) ⇒ Template

Returns a new instance of Template.



11
12
13
14
# File 'lib/condenser/transformers/svg_transformer/template.rb', line 11

def initialize(source)
  @source = source.strip
  process
end

Instance Attribute Details

#sourceObject

Returns the value of attribute source.



5
6
7
# File 'lib/condenser/transformers/svg_transformer/template.rb', line 5

def source
  @source
end

Instance Method Details

#processObject



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
# File 'lib/condenser/transformers/svg_transformer/template.rb', line 16

def process
  seek(0)
  @tree =   [Condenser::SVGTransformer::Base.new]
  @stack =  [:str]
  
  while !eos?
    case @stack.last
    when :str
      scan_until(Regexp.new("(#{START_TAGS.map{|s| Regexp.escape(s) }.join('|')}|\\z)"))
      if !matched.nil? && START_TAGS.include?(matched)
        @stack << :tag
      end
    when :tag
      scan_until(Regexp.new("(\\/|[^\\s>]+)"))
      if matched == '/'
        @stack.pop
        @stack << :close_tag
      else
        @tree << Condenser::SVGTransformer::Tag.new(matched)
        @stack << :tag_attr_key
      end
    when :close_tag
      scan_until(Regexp.new("([^\\s>]+)"))

      el = @tree.pop
      if el.tag_name != matched
        raise Condenser::SVGTransformer::TemplateError.new("Expected to close #{el.tag_name.inspect} tag, instead closed #{matched.inspect}\n#{cursor}")
      end
      if !['!DOCTYPE', '?xml'].include?(el.tag_name)
        @tree.last.children << el
        scan_until(Regexp.new("(#{CLOSE_TAGS.map{|s| Regexp.escape(s) }.join('|')})"))
        @stack.pop
      end
    when :tag_attr_key
      scan_until(Regexp.new("(#{CLOSE_TAGS.map{|s| Regexp.escape(s) }.join('|')}|[^\\s=>]+)"))
      if CLOSE_TAGS.include?(matched)
        if matched == '/>' || VOID_ELEMENTS.include?(@tree.last.tag_name)
          el = @tree.pop
          @tree.last.children << el
          @stack.pop
          @stack.pop
        else
          @stack << :str
        end
      else
        key = if matched.start_with?('"') && matched.end_with?('"')
          matched[1..-2]
        elsif matched.start_with?('"') && matched.end_with?('"')
          matched[1..-2]
        else
          matched
        end
        @tree.last.attrs << key
        @stack << :tag_attr_value_tx
      end
    when :tag_attr_value_tx
      scan_until(Regexp.new("(#{(CLOSE_TAGS).map{|s| Regexp.escape(s) }.join('|')}|=|\\S)"))
      tag_key = @tree.last.attrs.pop
      if CLOSE_TAGS.include?(matched)
        el = @tree.last
        el.attrs << tag_key
        if VOID_ELEMENTS.include?(el.tag_name)
          @tree.pop
          @tree.last.children << el
        end
        @stack.pop
        @stack.pop
        @stack.pop
      elsif matched == '='
        @stack.pop
        @tree.last.attrs << tag_key
        @stack << :tag_attr_value
      else
        @stack.pop
        @tree.last.attrs << tag_key
        rewind(1)
      end

    when :tag_attr_value
      scan_until(Regexp.new("(#{CLOSE_TAGS.map{|s| Regexp.escape(s) }.join('|')}|'|\"|\\S+)"))

      if matched == '"'
        @stack.pop
        @stack << :tag_attr_value_double_quoted
      elsif matched == "'"
        @stack.pop
        @stack << :tag_attr_value_single_quoted
      else
        @stack.pop
        key = @tree.last.attrs.pop
        @tree.last.namespace = matched if key == 'xmlns'
        @tree.last.attrs << { key => matched }
      end
    when :tag_attr_value_double_quoted
      quoted_value = ''
      scan_until(/"/)
      quoted_value << pre_match if !pre_match.strip.empty?
      rewind(1)

      quoted_value = Condenser::SVGTransformer::Value.new(quoted_value)

      key = @tree.last.attrs.pop
      @tree.last.namespace = quoted_value if key == 'xmlns'
      if @tree.last.attrs.last.is_a?(Hash) && !@tree.last.attrs.last.has_key?(key)
        @tree.last.attrs.last[key] = quoted_value
      else
        @tree.last.attrs << { key => quoted_value }
      end
      scan_until(/\"/)
      @stack.pop
    when :tag_attr_value_single_quoted
      quoted_value = ''
      scan_until(/(')/)
      quoted_value << pre_match if !pre_match.strip.empty?
      rewind(1)

      quoted_value = Condenser::SVGTransformer::Value.new(quoted_value)

      key = @tree.last.attrs.pop
      @tree.last.namespace = quoted_value if key == 'xmlns'
      if @tree.last.attrs.last.is_a?(Hash) && !@tree.last.attrs.last.has_key?(key)
        @tree.last.attrs.last[key] = quoted_value
      else
        @tree.last.attrs << { key => quoted_value }
      end
      scan_until(/\'/)
      @stack.pop
    end
  end
end

#to_moduleObject



147
148
149
# File 'lib/condenser/transformers/svg_transformer/template.rb', line 147

def to_module
  @tree.first.to_module
end