Module: Uv

Defined in:
lib/uv.rb,
lib/uv/engine.rb,
lib/uv/utility.rb,
lib/uv/version.rb,
lib/uv/finding_syntaxes.rb,
lib/uv/render_processor.rb

Defined Under Namespace

Classes: Engine, RenderProcessor

Constant Summary collapse

VERSION = 
'0.0.7.2'

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.default_style ⇒ Object

Returns the value of attribute default_style.



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# File 'lib/uv.rb', line 13

def default_style
  @default_style
end

.render_path ⇒ Object

Returns the value of attribute render_path.



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# File 'lib/uv.rb', line 13

def render_path
  @render_path
end

.syntax_path ⇒ Object

Returns the value of attribute syntax_path.



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# File 'lib/uv.rb', line 13

def syntax_path
  @syntax_path
end

.syntaxes ⇒ Object

Returns the list of file names in the syntax dir



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# File 'lib/uv.rb', line 39

def syntaxes
  @syntaxes
end

.theme_path ⇒ Object

Returns the value of attribute theme_path.



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# File 'lib/uv.rb', line 13

def theme_path
  @theme_path
end

Class Method Details

.alpha_blend(bg, fg) ⇒ Object 



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# File 'lib/uv/utility.rb', line 10

def Uv.alpha_blend bg, fg
  unless bg =~ /^#((\d|[ABCDEF]){3}|(\d|[ABCDEF]){6}|(\d|[ABCDEF]){8})$/i
    raise(ArgumentError, "Malformed background color '#{bg}'" )
  end
  unless fg =~ /^#((\d|[ABCDEF]){3}|(\d|[ABCDEF]){6}|(\d|[ABCDEF]){8})$/i
    raise(ArgumentError, "Malformed foreground color '#{fg}'" )
  end

  if bg.size == 4
    tbg  =  (fg[1,1].hex * 0xff / 0xf).to_s(16).upcase.rjust(2, '0')
    tbg +=  (fg[2,1].hex * 0xff / 0xf).to_s(16).upcase.rjust(2, '0')
    tbg +=  (fg[3,1].hex * 0xff / 0xf).to_s(16).upcase.rjust(2, '0')
    bg   =  "##{tbg}"
  end

  result = ""
  if fg.size == 4
    result += (fg[1,1].hex * 0xff / 0xf).to_s(16).upcase.rjust(2, '0')
    result += (fg[2,1].hex * 0xff / 0xf).to_s(16).upcase.rjust(2, '0')
    result += (fg[3,1].hex * 0xff / 0xf).to_s(16).upcase.rjust(2, '0')
  elsif fg.size == 9
    if bg.size == 7
      div0 = bg[1..-1].hex
      div1, alpha = fg[1..-1].hex.divmod( 0x100 )
      3.times {      
        div0, mod0 = div0.divmod( 0x100 )
        div1, mod1 = div1.divmod( 0x100 )
        result = ((mod0 * alpha + mod1 * ( 0x100 - alpha ) ) / 0x100).to_s(16).upcase.rjust(2, '0') + result
      }
    else
      div_a, alpha_a = bg[1..-1].hex.divmod( 0x100 )
      div_b, alpha_b = fg[1..-1].hex.divmod( 0x100 )
      alpha = alpha_a + alpha_b * (0x100 - alpha_a)
      3.times {
        div_b, c_b = div_b.divmod( 0x100 )
        div_a, c_a = div_a.divmod( 0x100 )
        result = ((c_a * alpha_a + ( 0x100 - alpha_a ) * alpha_b * c_b ) / alpha).to_s(16).upcase.rjust(2, '0') + result
      }
    end
    #result = "FF00FF"
  else
    result = fg[1..-1]
  end
  "##{result}"
end

.copy_files(output, output_dir) ⇒ Object

Copies files from the [ruby-uv/render/<arg1>/files/] to the <arg2> output directory



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# File 'lib/uv.rb', line 31

def Uv.copy_files output, output_dir
  Uv.path.each do |dir|
    dir_name = File.join( dir, "render", output, "files" )
    FileUtils.cp_r( Dir.glob(File.join( dir_name, "." )), output_dir ) if File.exists?( dir_name )
  end
end

.debug(text, syntax_name) ⇒ Object

Parses <arg1> text with Textpow::DebugProcessor, using the given syntax



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# File 'lib/uv.rb', line 67

def Uv.debug text, syntax_name
  syntax_node_for(syntax_name).parse(text, Textpow::DebugProcessor.new)
end

.find_syntaxes(extensions = [], first_line = '') ⇒ Object 



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# File 'lib/uv/finding_syntaxes.rb', line 25

def Uv.find_syntaxes(extensions=[], first_line='')
  init_syntaxes unless @syntaxes
  syntaxes = []
  extensions.each do |ext|
    syntaxes += find_syntaxes_by_ext(ext)
  end
  syntaxes += find_syntaxes_by_first_line(first_line)
  syntaxes
end

.find_syntaxes_by_ext(ext) ⇒ Object 



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# File 'lib/uv/finding_syntaxes.rb', line 3

def Uv.find_syntaxes_by_ext(ext)
  syntaxes = []
  if !@syntaxes.key?(ext)
    @syntaxes.each do |syntax_name, syntax_node|
      syntaxes << syntax_node if syntax_node.fileTypes && syntax_node.fileTypes.include?(ext)
    end
    filename = File.join(@syntax_path, "#{ext}.syntax")
    syntaxes << Textpow::SyntaxNode.load(filename) if File.exist?(filename)
  else
    syntaxes << @syntaxes[ext]
  end
  syntaxes
end

.find_syntaxes_by_first_line(first_line) ⇒ Object 



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# File 'lib/uv/finding_syntaxes.rb', line 17

def Uv.find_syntaxes_by_first_line(first_line)
  syntaxes = []
  @syntaxes.each do |syntax_name, syntax_node|
    syntaxes << syntax_node if syntax_node.firstLineMatch && syntax_node.firstLineMatch =~ first_line
  end
  syntaxes
end

.foreground(bg) ⇒ Object 



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# File 'lib/uv/utility.rb', line 2

def Uv.foreground bg
  fg = "#FFFFFF"
  3.times do |i|
    fg = "#000000" if bg[i*2+1, 2].hex > 0xFF / 2
  end
  fg
end

.get_first_line(text) ⇒ Object 



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# File 'lib/uv.rb', line 61

def Uv.get_first_line(text)
  first_break = text.index(/[\n\r]/) || text.length - 1
  text[0..first_break].strip
end

.normalize_color(settings, color, fg = false) ⇒ Object 



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# File 'lib/uv/utility.rb', line 56

def Uv.normalize_color settings, color, fg = false
  if color
    if fg
      alpha_blend( settings["foreground"] ? settings["foreground"] : "#000000FF", color )
    else
      alpha_blend( settings["background"] ? settings["background"] : "#000000FF", color )
    end
  else
    color
  end
end

.parse(text, output = "xhtml", syntax_name = nil, line_numbers = false, render_style = nil, headers = false) ⇒ Object

Parses <arg1> text using RenderProcessor.load(Textpow::SyntaxNode.parse(text)), returns the vailid <output>



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# File 'lib/uv.rb', line 53

def Uv.parse text, output = "xhtml", syntax_name = nil, line_numbers = false, render_style = nil, headers = false
  syntaxes = find_syntaxes([syntax_name], get_first_line(text))
  syntax_node = syntaxes.first
  RenderProcessor.load(output, render_style, line_numbers, headers) do |processor|
    syntax_node.parse(text, processor)
  end.string
end

.path ⇒ Object

Returns the root path for Uv: [‘bin’,‘lib’…]



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# File 'lib/uv.rb', line 24

def Uv.path
  result = []
  result << File.join(File.dirname(__FILE__), ".." )
end

.syntax_for_file(file_name) ⇒ Object

Guesses the correct syntax based on the input files fileType. If the FileType doesnt containt a valid syntax name, each syntax has it’s first line matched againts the the file’s first line



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# File 'lib/uv/finding_syntaxes.rb', line 64

def Uv.syntax_for_file file_name
  init_syntaxes unless @syntaxes
  first_line = ""
  File.open( file_name, 'r' ) { |f|
    while (first_line = f.readline).strip.size == 0; end
  }
  result = []
  @syntaxes.each do |key, value|
    assigned = false
    if value.fileTypes
      value.fileTypes.each do |t|
        if t == File.basename( file_name ) || t == File.extname( file_name )[1..-1]
          result << [key, value]
          assigned = true
          break
        end
      end
    end
    unless assigned
      if value.firstLineMatch && value.firstLineMatch =~ first_line
        result << [key, value]
      end
    end
  end
  result
end

.syntax_node_for(syntax) ⇒ Object

Returns the Textpow::SyntaxNode for this syntax; Ex: syntax_node_for(‘ruby’) => Textpow::SyntaxNode.load(‘ruby.syntax’)

Raises:

  • ArgumentError if no syntax is found



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# File 'lib/uv/finding_syntaxes.rb', line 39

def self.syntax_node_for(syntax)
  if !@syntaxes.key?(syntax)
    filename = File.join(@syntax_path, "#{syntax}.syntax")
    @syntaxes[syntax] = if File.exist?(filename)
      Textpow::SyntaxNode.load(filename)
    else
      false
    end
  end
  if !@syntaxes[syntax]
    if syntax == '' or syntax.nil?
      puts "No syntax supplied, defaulting to 'plain_text' syntax"
      syntax = "plain_text"
    else
      raise ArgumentError, "Syntax not found.  No #{syntax}.syntax file in #{@syntax_path}"
    end
  end
  @syntaxes[syntax]
end

.themes ⇒ Object

Returns the list of .css files in the theme directory



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# File 'lib/uv.rb', line 46

def Uv.themes
  Dir.glob( File.join(@theme_path, '*.css') ).collect do |f|
    File.basename(f, '.css')
  end
end