Class: NanDoc::DiffProxy::Diff

Inherits:
Object
  • Object
show all
Defined in:
lib/nandoc/support/diff-proxy.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(out, err, args) ⇒ Diff

Returns a new instance of Diff.



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# File 'lib/nandoc/support/diff-proxy.rb', line 80

def initialize out, err, args
  @out = out
  @error = err
  @args = args
end

Instance Attribute Details

#error ⇒ Object (readonly)

Returns the value of attribute error.



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# File 'lib/nandoc/support/diff-proxy.rb', line 85

def error
  @error
end

Class Method Details

.default_diff_stylesheet ⇒ Object 



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# File 'lib/nandoc/support/diff-proxy.rb', line 37

def default_diff_stylesheet
  @default_diff_stylesheet ||= {
    :header => [:bold, :yellow],
    :add    => [:bold, :green],
    :remove => [:bold, :red],
    :range  => [:bold, :magenta],
    :trailing_whitespace => [:background, :red]
  }
end

.stream_colorizer_prototype ⇒ Object 



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# File 'lib/nandoc/support/diff-proxy.rb', line 46

def stream_colorizer_prototype
  @stream_colorizer_prototype ||= begin
    require File.dirname(__FILE__)+'/stream-colorizer.rb'
    NanDoc::StreamColorizer.new do |sc|
      sc.stylesheet_merge(default_diff_stylesheet)
      sc.when %r(\Adiff ), :state=>:header
      sc.when(:header) do |o|
        o.style :header
        o.when %r(\A@@), :state=>:range
      end
      sc.when(:range) do |o|
        o.style :range
        o.when_not %r(\A@@), :state=>:plain
      end
      sc.when(:plain) do |o|
        o.style nil
        o.when %r(\Adiff ), :state=>:header
        o.when %r(\A\+), :state=>:add
        o.when %r(\A\-), :state=>:remove
      end
      sc.when(:add) do |o|
        o.style :add
        o.trailing_whitespace_style :trailing_whitespace
        o.when_not %r(\A\+), :state=>:plain
      end
      sc.when(:remove) do |o|
        o.style :remove
        o.trailing_whitespace_style :trailing_whitespace
        o.when_not %r(\A\-), :state=>:plain
      end
    end
  end
end

Instance Method Details

#colorize(out, opts = {}) ⇒ Object 



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# File 'lib/nandoc/support/diff-proxy.rb', line 97

def colorize out, opts={}
  colorizer = self.class.stream_colorizer_prototype.spawn do |c|
    c.stylesheet_merge(opts[:styles] || {})
  end
  colorizer.filter(to_s, out)
  nil
end

#command ⇒ Object 



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# File 'lib/nandoc/support/diff-proxy.rb', line 86

def command
  Shellwords.join(@args)
end

#error? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nandoc/support/diff-proxy.rb', line 89

def error?; ! @error.empty? end

#full_error_message ⇒ Object 



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# File 'lib/nandoc/support/diff-proxy.rb', line 90

def full_error_message
  "diff failed: #{command}\ngot error: #{error}"
end

#ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nandoc/support/diff-proxy.rb', line 93

def ok?; ! error? end

#to_s ⇒ Object 



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# File 'lib/nandoc/support/diff-proxy.rb', line 94

def to_s
  @out
end