Class: Gly::PreviewGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/gly/preview_generator.rb

Overview

Takes Gly::Document, builds a pdf preview (or at least generates all necessary assets)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(**options) ⇒ PreviewGenerator

Returns a new instance of PreviewGenerator.



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# File 'lib/gly/preview_generator.rb', line 7

def initialize(**options)
  @preview_dest = nil

  @template = options.delete(:template) || default_template
  @builder = options.delete(:builder) || PreviewBuilder.new
  @options = options.delete(:options) || {}
end

Instance Attribute Details

#preview_dest ⇒ Object

IO to which the main LaTeX document should be written. If not set, a file will be created with name based on the source file name.



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# File 'lib/gly/preview_generator.rb', line 18

def preview_dest
  @preview_dest
end

Instance Method Details

#process(document) ⇒ Object 



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# File 'lib/gly/preview_generator.rb', line 20

def process(document)
  convertor = DocumentGabcConvertor.new(document, **@options)
  convertor.convert

  doc_body = fw = StringIO.new

  if @options[:full_headers]
    fw.puts header_table document.header
  end

  scores_with_names = convertor.each_score_with_gabcname

  document.content.each do |c|
    if c.is_a? Markup
      fw.puts render_markup(c)
    else
      score, gabc_fname, gtex_fname = scores_with_names.next
      fw.puts render_score(score, gabc_fname, gtex_fname)
    end
  end

  if @options['no_document']
    tex = doc_body.string
  else
    replacements = {
      'glyvars' => header_variables(document.header),
      'body' => doc_body.string
    }
    tex = @template.gsub(/\{\{(\w+)\}\}/) {|m| replacements[m[2..-3]] }
  end

  with_preview_io(document.path) do |fw|
    @builder.main_tex = fw.path if fw.respond_to? :path

    fw.puts tex
  end

  build_disabled = @options['no_build'] || @options['no_document']
  if @builder.main_tex && !build_disabled
    @builder.build
  end
end