Class: RT::RTParser

Inherits:
Object
  • Object
show all
Defined in:
lib/rt/rtparser.rb

Constant Summary collapse

DefaultConfig = 
{
  'delimiter' => "[,\t]",
  'rowspan'   => "||",
  'colspan'   => "==",
  'escape'    => nil,
  'caption'   => nil,
}
ESCAPE_TMP = 
"\001\002"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(str = "") ⇒ RTParser

Returns a new instance of RTParser.



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# File 'lib/rt/rtparser.rb', line 63

def initialize(str="")
  @str = str.dup
  normalize_linefeed! @str
  @config_line = []
  @header_line = []
  @body_line = []
  @config = DefaultConfig.dup
  @header = []
  @body = []
end

Instance Attribute Details

#body ⇒ Object (readonly)

Returns the value of attribute body.



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# File 'lib/rt/rtparser.rb', line 73

def body
  @body
end

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/rt/rtparser.rb', line 73

def config
  @config
end

#header ⇒ Object (readonly)

Returns the value of attribute header.



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# File 'lib/rt/rtparser.rb', line 73

def header
  @header
end

#str ⇒ Object (readonly)

Returns the value of attribute str.



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# File 'lib/rt/rtparser.rb', line 73

def str
  @str
end

Class Method Details

.parse(str) ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 80

def self::parse(str)
  obj = self::new str
  obj.make_blocks
  obj.parse_config
  obj.parse_header
  obj.parse_body
  obj.calc_span(obj.header)
  obj.calc_span(obj.body)
  obj
end

Instance Method Details

#blocks ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 91

def blocks
  [@config_line, @header_line, @body_line]
end

#calc_span(tbl) ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 185

def calc_span(tbl)
  return if tbl.empty?
  cols = tbl[0].length
  tbl.each do |row|
    row.each_with_index do |elm, j|
      case elm
      when String
      when RTCell
        nspan = 1
        1.upto(cols-j-1) do |k|
          break unless row[j+k] == config['colspan']
          nspan += 1
        end
        row[j].colspan = nspan
      else
        raise "[BUG] invalid cell"
      end
    end
  end
  
  rows = tbl.length
  0.upto(cols-1) do |j|
    0.upto(rows-1) do |i|
      case tbl[i][j]
      when String
      when RTCell
        nspan = 1
        1.upto(rows-i-1) do |k|
          break unless tbl[i+k][j] == config['rowspan']
          nspan += 1
        end
        tbl[i][j].rowspan = nspan
      else
        raise "[BUG] invalid cell"
      end
    end
  end
end

#make_blocks(str = @str) ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 95

def make_blocks(str = @str)
  part = str.split(/\n\n/).collect{|x| x.split(/\n/)}
  case part.length
  when 0
  when 1
    @body_line, = part
  when 2
    @config_line, @body_line = part
  when 3
    @config_line, @header_line, @body_line = part
  else
    raise "RT: blocks are too many."
  end
  self
end

#normalize_linefeed!(str) ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 75

def normalize_linefeed!(str)
  str.gsub!("\r\n", "\n")
  str.gsub!("\r", "\n")
end

#parse_body(lines = @body_line) ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 178

def parse_body(lines = @body_line)
  @body = parse_table_data(lines) {|x|
    _make_cell x, nil
  }
  self
end

#parse_config(lines = @config_line) ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 111

def parse_config(lines = @config_line)
  lines.each do |line|
    case line
    when /^#/               # comment
    when /^\s*(\S+)\s*=\s*(.+)$/
      @config[$1] = $2
    else
      raise "RT: syntax error in config block"
    end
  end
  self
end

#parse_header(lines = @header_line) ⇒ Object 



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# File 'lib/rt/rtparser.rb', line 171

def parse_header(lines = @header_line)
  @header = parse_table_data(lines) {|x|
    _make_cell x, :center
  }
  self
end