Class: MarkdownIt::RulesBlock::Table

Inherits:
Object
  • Object
show all
Extended by:
Common::Utils
Defined in:
lib/motion-markdown-it/rules_block/table.rb

Constant Summary

Constants included from Common::Utils

Common::Utils::DIGITAL_ENTITY_TEST_RE, Common::Utils::ENTITY_RE, Common::Utils::HTML_ESCAPE_REPLACE_RE, Common::Utils::HTML_ESCAPE_TEST_RE, Common::Utils::HTML_REPLACEMENTS, Common::Utils::REGEXP_ESCAPE_RE, Common::Utils::UNESCAPE_ALL_RE, Common::Utils::UNESCAPE_MD_RE, Common::Utils::UNICODE_PUNCT_RE

Class Method Summary collapse

Methods included from Common::Utils

arrayReplaceAt, assign, charCodeAt, escapeHtml, escapeRE, fromCharCode, fromCodePoint, isMdAsciiPunct, isPunctChar, isSpace, isValidEntityCode, isWhiteSpace, normalizeReference, replaceEntityPattern, unescapeAll, unescapeMd

Class Method Details

.escapedSplit(str) ⇒ Object 



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
 
# File 'lib/motion-markdown-it/rules_block/table.rb', line 17

def self.escapedSplit(str)
  result       = []
  pos          = 0
  max          = str.length
  isEscaped    = false
  lastPos      = 0
  current      = ''

  ch           = charCodeAt(str, pos)

  while (pos < max)
    if ch == 0x7c  # |
      if (!isEscaped)
        # pipe separating cells, '|'
        result.push(current + str[lastPos...pos])
        current = ''
        lastPos = pos + 1
      else
        # escaped pipe, '\|'
        current += str[lastPos...(pos - 1)]
        lastPos = pos
      end
    end

    isEscaped = (ch == 0x5c)   # '\'
    pos += 1

    ch = charCodeAt(str, pos)
  end

  result.push(current + str[lastPos..-1])

  return result
end

.getLine(state, line) ⇒ Object 



9
10
11
12
13
14
 
# File 'lib/motion-markdown-it/rules_block/table.rb', line 9

def self.getLine(state, line)
  pos = state.bMarks[line] + state.tShift[line]
  max = state.eMarks[line]

  return state.src[pos, max - pos]
end

.table(state, startLine, endLine, silent) ⇒ Object 



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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
 
# File 'lib/motion-markdown-it/rules_block/table.rb', line 53

def self.table(state, startLine, endLine, silent)
  # should have at least two lines
  return false if (startLine + 2 > endLine)

  nextLine = startLine + 1

  return false if (state.sCount[nextLine] < state.blkIndent)

  # if it's indented more than 3 spaces, it should be a code block
  return false if state.sCount[nextLine] - state.blkIndent >= 4

  # first character of the second line should be '|', '-', ':',
  # and no other characters are allowed but spaces;
  # basically, this is the equivalent of /^[-:|][-:|\s]*$/ regexp

  pos = state.bMarks[nextLine] + state.tShift[nextLine]
  return false if (pos >= state.eMarks[nextLine])

  firstCh = charCodeAt(state.src, pos)
  pos += 1
  return false if (firstCh != 0x7C && firstCh != 0x2D && firstCh != 0x3A) # | or  - or :

  return false if (pos >= state.eMarks[nextLine])

  secondCh = charCodeAt(state.src, pos)
  pos += 1
  return false if (secondCh != 0x7C && secondCh != 0x2D && secondCh != 0x3A && !isSpace(secondCh)) # | or  - or :

  # if first character is '-', then second character must not be a space
  # (due to parsing ambiguity with list)
  return false if (firstCh === 0x2D && isSpace(secondCh)) # - 

  while pos < state.eMarks[nextLine]
    ch = charCodeAt(state.src, pos)
    return false if (ch != 0x7C && ch != 0x2D && ch != 0x3A && !isSpace(ch)) # | or - or :

    pos += 1
  end

  lineText = getLine(state, startLine + 1)

  columns = lineText.split('|')
  aligns = []
  (0...columns.length).each do |i|
    t = columns[i].strip
    if t.empty?
      # allow empty columns before and after table, but not in between columns
      # e.g. allow ` |---| `, disallow ` ---||--- `
      if (i == 0 || i == columns.length - 1)
        next
      else
        return false
      end
    end

    return false if (/^:?-+:?$/ =~ t).nil?
    if (charCodeAt(t, t.length - 1) == 0x3A)  # ':'
      aligns.push(charCodeAt(t, 0) == 0x3A ? 'center' : 'right')
    elsif (charCodeAt(t, 0) == 0x3A)
      aligns.push('left')
    else
      aligns.push('')
    end
  end

  lineText = getLine(state, startLine).strip
  return false if !lineText.include?('|')
  return false if state.sCount[startLine] - state.blkIndent >= 4
  columns = self.escapedSplit(lineText)

  columns.shift if (columns.length && columns[0] == '') 
  columns.pop if (columns.length && columns[columns.length - 1] == '')

  # header row will define an amount of columns in the entire table,
  # and align row should be exactly the same (the rest of the rows can differ)
  columnCount = columns.length
  return false if columnCount == 0 || columnCount != aligns.length

  return true  if silent

  oldParentType = state.parentType
  state.parentType = 'table'

  # use 'blockquote' lists for termination because it's
  # the most similar to tables
  terminatorRules = state.md.block.ruler.getRules('blockquote')

  token     = state.push('table_open', 'table', 1)
  token.map = tableLines = [ startLine, 0 ]

  token     = state.push('thead_open', 'thead', 1)
  token.map = [ startLine, startLine + 1 ]

  token     = state.push('tr_open', 'tr', 1)
  token.map = [ startLine, startLine + 1 ]

  (0...columns.length).each do |i|
    token          = state.push('th_open', 'th', 1)
    unless aligns[i].empty?
      token.attrs  = [ [ 'style', 'text-align:' + aligns[i] ] ]
    end

    token          = state.push('inline', '', 0)
    token.content  = columns[i].strip
    token.children = []

    token          = state.push('th_close', 'th', -1)
  end

  token     = state.push('tr_close', 'tr', -1)
  token     = state.push('thead_close', 'thead', -1)

  nextLine = startLine + 2
  while nextLine < endLine
    break if (state.sCount[nextLine] < state.blkIndent)

    terminate = false
    (0...terminatorRules.length).each do |i|
      if (terminatorRules[i].call(state, nextLine, endLine, true))
        terminate = true
        break
      end
    end

    break if (terminate)

    lineText = getLine(state, nextLine).strip
    break if lineText.empty?
    break if state.sCount[nextLine] - state.blkIndent >= 4
    columns = self.escapedSplit(lineText)
    columns.shift if (columns.length && columns[0] == '')
    columns.pop if (columns.length && columns[columns.length - 1] == '')

    if (nextLine == startLine + 2)
      token     = state.push('tbody_open', 'tbody', 1)
      token.map = tbodyLines = [ startLine + 2, 0 ]
    end

    token     = state.push('tr_open', 'tr', 1)
    token.map = [ nextLine, nextLine + 1 ]

    (0...columnCount).each do |i|
      token          = state.push('td_open', 'td', 1)
      token.map      = [ nextLine, nextLine + 1 ]
      unless aligns[i].empty?
        token.attrs  = [ [ 'style', 'text-align:' + aligns[i] ] ]
      end

      token          = state.push('inline', '', 0)
      token.content  = columns[i] ? columns[i].strip : ''
      token.children = []

      token          = state.push('td_close', 'td', -1)
    end
    token = state.push('tr_close', 'tr', -1)
    nextLine += 1
  end

  if (tbodyLines)
    token = state.push('tbody_close', 'tbody', -1)
    tbodyLines[1] = nextLine
  end

  token = state.push('table_close', 'table', -1)
  tableLines[1] = nextLine

  state.parentType = oldParentType
  state.line = nextLine
  return true
end