Module: Antwort::LogicHelpers

Included in:
Builder
Defined in:
lib/antwort/helpers/logic_helper.rb

Instance Method Summary collapse

Instance Method Details

#cleanup_logic(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 75

def cleanup_logic(html = '')
  html.gsub(/({%|{{)(.*?)(&lt;)(.*?)(}}|%})/, '\1\2<\4\5') # <
      .gsub(/({%|{{)(.*?)(&gt;)(.*?)(}}|%})/, '\1\2>\4\5') # >
      .gsub(/&amp;&amp;/, '&&')
end

#convert_helper_wrappers(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 70

def convert_helper_wrappers(html = '')
  html.gsub(/{{ button(.+?)}}/, '{% button\1%}')
      .gsub(/{{ image_tag(.+?)}}/, '{% image_tag\1%}')
end

#convert_partials_to_includes(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 64

def convert_partials_to_includes(html = '')
  html.gsub(/{{ partial :(.+?) }}/, '{% include \1 %}')
      .gsub(/{% include (.+),\s+locals:(.+?)%}/, '{% include \1 with:\2%}')
      .gsub(/(<%=\s+?partial\s+?:)(.+?),(.+?)(locals:)((.|\n)+?)(%>)/, '{% include \2 with:\5%}') # multiline partials not caught in presumably leftover variable
end

#preserve_assignments(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 50

def preserve_assignments(html = '')
  html.gsub(/<%\s+([A-Za-z0-9_]+)\s*(\|\|=)\s*(.*)\s+%>/, '{% set \1 = \1 || \3 %}')
      .gsub(/<%\s+([A-Za-z0-9_]+)\s*(=)\s*(.*)\s+%>/, '{% set \1 = \3 %}')
end

#preserve_comments(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 38

def preserve_comments(html = '')
  html.gsub(/<%[ \t]*#(.*)%>/, '{#\1#}')
      .gsub(/{#([^=\s])/, '{# \1')      # {#foo #} ->{# foo #}
end

#preserve_conditionals(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 23

def preserve_conditionals(html = '')
  html.gsub(/<%\s*if (.*?)%>/, '{% if \1 %}')         # if
      .gsub(/<%\s*unless (.*?)%>/, '{% if !( \1) %}') # unless
      .gsub(/<%\s*elsif(.*?)%>/, '{% elseif\1%}')     # elsif
      .gsub(/<%\s*else\s*%>/, '{% else %}')           # else
      .gsub(/<%\s*end\s*%>/, '{% end %}')             # end
      .gsub(/[ \t]{2,}%}/, ' %}') # remove extra white space, e.g. {% else    %}
end

#preserve_leftover_statements(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 55

def preserve_leftover_statements(html = '')
  html.gsub(/<%\s*(.*?)?%>/, '{% \1%}') # no trailing space because group captures it
end

#preserve_logic(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 11

def preserve_logic(html = '')
  html = preserve_comments(html)
  html = preserve_conditionals(html) # conditionals before loops, in case we have them inside loops
  html = preserve_loops(html)
  html = preserve_variables(html)
  html = preserve_assignments(html)
  html = convert_partials_to_includes(html)
  html = convert_helper_wrappers(html)
  html = preserve_leftover_statements(html) # must be last
  html
end

#preserve_loops(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 32

def preserve_loops(html = '')
  html.gsub(/<%\s+(.*)(\.each\s+do\s+\|)\s*(\S+)\s*(\|\s+)%>/, '{% for \3 in \1 %}')
      .gsub(/<%\s+(.*)(\.each_with_index\s+do\s+\|)\s*(\S+)\s*,\s*(\S+)\s*(\|\s+)%>/, '{% for \3 in \1 with: {@index: \4} %}')
      .gsub(/<%\s*end\s*%>/, '{% end %}')
end

#preserve_nbsps(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 3

def preserve_nbsps(html = '')
  html.gsub(/&nbsp;/, '%nbspace%')
end

#preserve_variables(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 43

def preserve_variables(html = '')
  html.gsub(/\[:(.*?)\]/, '.\1')        # a[:b][:c] -> a.b.c
      .gsub(/\['(.*?)'\]/, '.\1')       # a['b'] -> a.b
      .gsub(/\["(.*?)"\]/, '.\1')       # a["b"] -> a.b
      .gsub(/<%=(.*?)%>/, '{{\1}}') # assume leftover erb output are variables
end

#restore_nbsps(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 7

def restore_nbsps(html = '')
  html.gsub(/%nbspace%/, '&nbsp;')
end

#restore_variables_in_links(html = '') ⇒ Object 



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# File 'lib/antwort/helpers/logic_helper.rb', line 59

def restore_variables_in_links(html = '')
  html.gsub('%7B%7B%20', '{{ ')
      .gsub('%20%7D%7D', ' }}')
end