Module: Slideshow::Syntax::CodeRayHelper
- Included in:
- Gen
- Defined in:
- lib/slideshow/helpers/syntax/coderay_helper.rb
Constant Summary collapse
- CR_LANG =
coderay option defaults
'ruby'
- CR_LINE_NUMBERS =
table | list | inline
'table'
Instance Method Summary collapse
Instance Method Details
#coderay(*args, &blk) ⇒ Object
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# File 'lib/slideshow/helpers/syntax/coderay_helper.rb', line 67 def coderay( *args, &blk ) # check for optional hash for options opts = args.last.kind_of?(Hash) ? args.pop : {} code = capture_erb(&blk) return if code.empty? code_highlighted = coderay_worker( code, opts ) concat_erb( wrap_markup( code_highlighted ), blk.binding ) return end |
#coderay_worker(code, opts) ⇒ Object
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# File 'lib/slideshow/helpers/syntax/coderay_helper.rb', line 13 def coderay_worker( code, opts ) lang = opts.fetch( :lang, CR_LANG ) line_numbers = opts.fetch( :line_numbers, headers.get('code-line-numbers', CR_LINE_NUMBERS ) ) line_number_start = opts.fetch( :start, nil ) cr_opts = {} cr_opts[ :line_numbers ] = line_numbers.to_sym cr_opts[ :line_number_start ] = line_number_start.to_i if line_number_start # todo: add options for bold_every, tab_width (any others?) code_highlighted = CodeRay.scan( code, lang.to_sym ).html(cr_opts) # first time? get built-in coderay stylesheet cr_first_time = session.fetch( :cr_first_time, true ) if cr_first_time session[ :cr_first_time ] = false theme_content = CodeRay::Encoders[:html]::CSS.new.stylesheet theme_out = %{/* styles for built-in coderay syntax highlighting theme */\n\n} theme_out << theme_content theme_out << %{\n\n} content_for( :css, theme_out ) end css_class = 'code' css_class_opt = opts.fetch( :class, nil ) # large, small, tiny, etc. css_class << " #{css_class_opt}" if css_class_opt # e.g. use/allow multiple classes -> code small, code large, etc. name = opts.fetch( :name, nil ) txmt_value = opts.fetch( :txmt, headers.code_txmt ) txmt = (txmt_value =~ /true|yes|on/i) ? true : false out = %{<div class='CodeRay'>} out << %{<pre '#{css_class}'>\n} out << code_highlighted out << %{</pre>} out << %{</div>} # add optional href link for textmate if name out << %{<div class="codeurl">} out << %{<a href="txmt://open?url=file://#{File.(name)}">} if txmt out << name out << %{</a>} if txmt out << %{</div>\n} end return out end |