Class: Canis::Chunks::ColorParser

Inherits:
Object
  • Object
show all
Defined in:
lib/canis/core/include/colorparser.rb

Overview

This class does not do the actual parsing which must be done by a class

based on the actual format of the marked up document. 
However, this class converts the parsed fragments to a Chunkline
which is an array of Chunks,

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cp) ⇒ ColorParser

Returns a new instance of ColorParser.



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# File 'lib/canis/core/include/colorparser.rb', line 223

def initialize cp
  # in some cases like statusline where it requests window to do some parsing, we will never know who
  #  the parent is. We could somehow get the window, and from there the form ???
  @parents = nil

  chunk_parser cp

  if cp.is_a? Hash
    @color = cp[:color]
    @bgcolor = cp[:bgcolor]
    @attr = cp[:attr]
  end
  if cp.is_a? TextPad
    self.form = cp
  end
  @attr     ||= FFI::NCurses::A_NORMAL
  @color      ||= :white
  @bgcolor    ||= :black
  @color_pair = get_color($datacolor, @color, @bgcolor)
  @color_array = [@color]
  @bgcolor_array = [@bgcolor]
  @attrib_array = [@attr]
  @color_pair_array = [@color_pair]
end

Instance Attribute Details

#style_map=(value) ⇒ Object (writeonly)

hash containing color, bgcolor and attr for a given style



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# File 'lib/canis/core/include/colorparser.rb', line 222

def style_map=(value)
  @style_map = value
end

#stylesheet ⇒ Object

Returns the value of attribute stylesheet.



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# File 'lib/canis/core/include/colorparser.rb', line 220

def stylesheet
  @stylesheet
end

Instance Method Details

#chunk_parser(f) ⇒ Object

supply with a color parser, if you supplied formatted text



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# File 'lib/canis/core/include/colorparser.rb', line 278

def chunk_parser f
  if f.is_a? Hash
    self.stylesheet = f[:stylesheet]
    content_type = f[:content_type]
  elsif f.is_a? TextPad
    ff = f.document
    self.stylesheet = ff.stylesheet
    content_type = ff.content_type
  elsif f.is_a? Symbol
    content_type = f
  else
    @chunk_parser = f
    return
  end
  @content_type = content_type
  $log.debug "XXX:  chunk_parser setting in CP to #{f}, content+type is #{content_type} "
  require 'canis/core/include/canisparser'
  @chunk_parser ||= CanisParser[content_type]
  raise "colorparser could not find a parser for #{content_type} " unless @chunk_parser
=begin
  if content_type == :tmux
    @chunk_parser = get_default_color_parser()
  elsif content_type == :ansi
    require 'canis/core/util/ansiparser'
    @chunk_parser = AnsiParser.new
  else
    @chunk_parser = f
  end
=end
end

#content_type(ct) ⇒ Object

what if a text pad changes it’s content type, should be not allow it to just

use the same parser with a changed internal parser

UNUSED as yet



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# File 'lib/canis/core/include/colorparser.rb', line 272

def content_type ct
  return if ct == @content_type
  @content_type = ct
  self.chunk_parser ct
end

#convert_to_chunk(s, colorp = $datacolor, att = FFI::NCurses::A_NORMAL) ⇒ Object Also known as: parse_line 



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# File 'lib/canis/core/include/colorparser.rb', line 341

def convert_to_chunk s, colorp=$datacolor, att=FFI::NCurses::A_NORMAL

  raise "You have not set parent of this using form(). Try setting window.form " unless @parents
  @chunk_parser ||= get_default_color_parser()
  res = ChunkLine.new
  # stack the values, so when user issues "/end" we can pop earlier ones

  newblockflag = false
  @chunk_parser.parse_format(s) do |p|
    case p
    when Array
      newblockflag = true
      ## got color / attr info, this starts a new span

      # added style 2014-05-19 - 12:57 maybe should be a hash
      #color, bgcolor, attr , style = *p
      lc, lb, la, ls = *p
      if ls
        #sc, sb, sa = resolve_style ls
        map = resolve_style ls
        $log.debug "  STYLLE #{ls} : #{map} "
        lc ||= map[:color]
        lb ||= map[:bgcolor]
        la ||= map[:attr]
      end
      @_bgcolor = lb
      @_color = lc
      if la
        @attr = get_attrib la
      end
      @_color_pair = nil
      if lc && lb
        # we know only store color_pair if both are mentioned in style or tag
        @_color_pair = get_color(nil, lc, lb)
      end

      #@color_pair_array << @color_pair
      #@attrib_array << @attr
      #$log.debug "XXX: CHUNK start cp=#{@color_pair} , a=#{@attr} :: c:#{lc} b:#{lb} : @c:#{@color} @bg: #{@bgcolor} "
      #$log.debug "XXX: CHUNK start arr #{@color_pair_array} :: #{@attrib_array} ::#{@color_array} ::: #{@bgcolor_array} "

    when :endcolor

      # end the current (last) span
      @parents.pop unless @parents.count == 1
      @_bgcolor = @_color = nil
      @_color_pair = nil
      @attr = nil

      #$log.debug "XXX: CHUNK end parents:#{@parents.count}, last: #{@parents.last} "
    when :reset   # ansi has this
      # end all previous colors
      # end the current (last) span
      # maybe we need to remove all parents except for first
      @parents.pop unless @parents.count == 1
      @_bgcolor = @_color = nil
      @_color_pair = nil
      @attr = nil


    when String

      ## create the chunk
      #$log.debug "XXX:  CHUNK     using on #{p}  : #{@_color_pair} , #{@attr}, fg: #{@_color}, #{@_bgcolor}, parent: #{@parents.last} " # 2011-12-10 12:38:51

      #chunk =  [color_pair, p, attr] 
      chunk = Chunk.new @_color_pair, p, @attr
      chunk.color = @_color
      chunk.bgcolor = @_bgcolor
      chunk.parent = @parents.last
      if newblockflag
        @parents << chunk
        #$log.debug "XXX: CHUNK start parents:#{@parents.count}, #{@parents.last} "
        newblockflag = true
      end
      if block_given?
        yield chunk
      else
        res << chunk
      end
    end
  end # parse
  return res unless block_given?
end

#form=(f) ⇒ Object

this is the widget actually that created the parser



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# File 'lib/canis/core/include/colorparser.rb', line 248

def form=(f)
  @parents = [f]
end

#get_default_color_parser ⇒ Object

returns an instance of the default color parser (tmux parser)



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# File 'lib/canis/core/include/colorparser.rb', line 428

def get_default_color_parser
  #require 'canis/core/util/defaultcolorparser'
  #@chunk_parser || DefaultColorParser.new

  require 'canis/core/include/canisparser'
  @chunk_parser ||= CanisParser[:tmux]
end

#parse_text(formatted_text) ⇒ Array<Abstractchunkline>

parse array of Strings into array of Chunks (Chunklines)

Parameters:

  • formatted (Array<String>) —

    text to be parsed into chunks

Returns:

  • (Array<Abstractchunkline>) —

    array of text in our native format (chunklines)



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# File 'lib/canis/core/include/colorparser.rb', line 323

def parse_text formatted_text
  l = []
  formatted_text.each { |e| 
    l << convert_to_chunk(e) 
  }
  return l
end

#resolve_style(style) ⇒ Object

since 2014-05-19 - 13:14 converts a style name given in a document to color, bg, and attr from a stylesheet



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# File 'lib/canis/core/include/colorparser.rb', line 311

def resolve_style style
  if @style_map
    # style_map contains a map for each style
    retval =  @style_map[style]
    raise "Invalid style #{style} in document" unless retval
    return retval
  end
  raise "Style given in document, but no stylesheet provided"
end