Class: MarkdownIt::RulesBlock::Table

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

Class Method Summary collapse

Class Method Details

.escapedSplit(str) ⇒ Object 



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
 
# File 'lib/motion-markdown-it/rules_block/table.rb', line 16

def self.escapedSplit(str)
  result       = []
  pos          = 0
  max          = str.length
  escapes      = 0
  lastPos      = 0
  backTicked   = false
  lastBackTick = 0
  
  ch           = str.charCodeAt(pos)

  while (pos < max)
    if (ch == 0x60 && (escapes % 2 == 0))  # `
      backTicked   = !backTicked
      lastBackTick = pos
    elsif (ch == 0x7c && (escapes % 2 == 0) && !backTicked)     # '|'
      result.push(str[lastPos...pos])
      lastPos = pos + 1
    elsif (ch == 0x5c)   # '\'
      escapes += 1
    else
      escapes = 0
    end

    pos += 1
    # If there was an un-closed backtick, go back to just after
    # the last backtick, but as if it was a normal character
    if (pos == max && backTicked)
      backTicked = false
      pos = lastBackTick + 1
    end
    ch   = str.charCodeAt(pos)
  end

  result.push(str.slice_to_end(lastPos))

  return result
end

.getLine(state, line) ⇒ Object 



8
9
10
11
12
13
 
# File 'lib/motion-markdown-it/rules_block/table.rb', line 8

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

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

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



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
 
# File 'lib/motion-markdown-it/rules_block/table.rb', line 57

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

  nextLine = startLine + 1

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

  # first character of the second line should be '|' or '-'
  pos = state.bMarks[nextLine] + state.tShift[nextLine]
  return false if (pos >= state.eMarks[nextLine])

  ch = state.src.charCodeAt(pos)
  return false if (ch != 0x7C && ch != 0x2D && ch != 0x3A) # != '|' && '-' && ':'

  lineText = getLine(state, startLine + 1)
  return false if (/^[-:| ]+$/ =~ lineText).nil?

  rows = lineText.split('|')
  return false if (rows.length < 2)
  aligns = []
  (0...rows.length).each do |i|
    t = rows[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 == rows.length - 1)
        next
      else
        return false
      end
    end

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

  lineText = getLine(state, startLine).strip
  return false if !lineText.include?('|')
  rows = self.escapedSplit(lineText.gsub(/^\||\|$/, ''))
  return false if (aligns.length != rows.length)
  return true  if silent

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

    token          = state.push('inline', '', 0)
    token.content  = rows[i].strip
    token.map      = [ startLine, startLine + 1 ]
    token.children = []

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

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

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

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

    lineText = getLine(state, nextLine).strip
    break if !lineText.include?('|')
    rows = self.escapedSplit(lineText.gsub(/^\||\|$/, ''))

    # set number of columns to number of columns in header row
    rows_length = aligns.length

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

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

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

  tableLines[1] = tbodyLines[1] = nextLine
  state.line = nextLine
  return true
end