Class: RegExRX2MD::RegexRX

Inherits:
Object
  • Object
show all
Defined in:
lib/regexrx2md/regexrx.rb

Overview

Reads RegExRX document and outputs template

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ RegexRX

Returns a new instance of RegexRX.



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# File 'lib/regexrx2md/regexrx.rb', line 8

def initialize(file)
  doc = File.open(file) { |f| Nokogiri::XML(f) }
  @content = doc.xpath('RegExRX_Document')
  @title = doc.xpath('//Window').first['Title'].strip
  @title = File.basename(file, '.regexrx') if @title =~ /^Untitled RegExRX/

  @search = rx_search
  @flags = rx_flags
  @flags_desc = describe_flags
  @replace = rx_replace
  @source = rx_source

  @search.sub!(/^(\(\?[-misUXxJ]+\))?/, "(?#{@flags})")
end

Instance Attribute Details

#flags ⇒ Object (readonly)

Returns the value of attribute flags.



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# File 'lib/regexrx2md/regexrx.rb', line 6

def flags
  @flags
end

#replace ⇒ Object (readonly)

Returns the value of attribute replace.



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# File 'lib/regexrx2md/regexrx.rb', line 6

def replace
  @replace
end

#search ⇒ Object (readonly)

Returns the value of attribute search.



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# File 'lib/regexrx2md/regexrx.rb', line 6

def search
  @search
end

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File 'lib/regexrx2md/regexrx.rb', line 6

def source
  @source
end

#title ⇒ Object (readonly)

Returns the value of attribute title.



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# File 'lib/regexrx2md/regexrx.rb', line 6

def title
  @title
end

Instance Method Details

#describe_flags ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 89

def describe_flags
  @flags ||= rx_flags

  positives, negatives = @flags.split(/-/)
  descs = {
    m: ['Treat target as one line', 'Do not treat target as one line'],
    i: ['Case insensitive', 'Case sensitive'],
    s: ['Dot matches newline', 'Dot does not match newline'],
    U: ['Not greedy', 'Greedy'],
    x: ['Free spacing', 'No free spacing'],
    X: ['Character following \ must have special meaning', 'Character following \ treated as literal'],
    J: ['Allow duplicate group names', 'Disallow duplicate group names']
  }

  ps = positives.nil? ? [] : positives.split('').map(&:to_sym)
  ns = negatives.nil? ? [] : negatives.split('').map(&:to_sym)

  desc = []

  %i[m i s U J X x].each do |flag|
    desc << if ps.include?(flag)
              "#{flag.to_s}: #{descs[flag][0]}"
            elsif ns.include?(flag)
              "-#{flag.to_s}: #{descs[flag][1]}"
            end
  end

  desc.delete_if(&:nil?).sort.map { |f| "* #{f}" }.join("\n")
end

#flags_in_search ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 80

def flags_in_search
  @search ||= rx_search
  positives = []
  negatives = []

  res = @search.match(/\(\?([-msiUxXJ]+)\)/)
  res ? res[1].split(/-/).map(&:split) : nil
end

#grab_opt(name) ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 131

def grab_opt(name)
  @content.xpath("//OptionMenu[@text='#{name}']").first['checked'] == 'true'
end

#grab_pref(name) ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 127

def grab_pref(name)
  @content.xpath("//Preference[@name='#{name}']").first['value'] == 'true'
end

#grab_string(name) ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 119

def grab_string(name)
  out = @content.xpath("//Control[@name=\"#{name}\"]").first
                .content
                .strip
                .force_encoding('utf-8')
  out.unpack
end

#rx_flags ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 42

def rx_flags
  positives = []
  negatives = []

  if grab_opt('Treat Target As One Line')
    positives << 'm'
  else
    negatives << 'm'
  end

  if grab_opt('Dot Matches Newline')
    positives << 's'
  else
    negatives << 's'
  end

  if grab_opt('Case Sensitive')
    negatives << 'i'
  else
    positives << 'i'
  end

  negatives << 'U' if grab_opt('Greedy')

  search_flags = flags_in_search
  unless search_flags.nil?
    ps = search_flags[0] || nil
    ns = search_flags[1] || nil
    positives.concat(ps.delete_if { |pos| positives.include?(pos) }) unless ps.nil?
    negatives.concat(ns.delete_if { |neg| negatives.include?(neg) }) unless ns.nil?
  end

  flags = positives.sort.join('')
  flags += "-#{negatives.sort.join('')}" unless negatives.empty?

  flags.empty? ? false : flags
end

#rx_replace ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 33

def rx_replace
  grab_pref('Do Replace') ? grab_string('fldReplace') : false
end

#rx_search ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 29

def rx_search
  grab_string('fldSearch')
end

#rx_source ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 37

def rx_source
  source = grab_string('fldSource')
  source.empty? ? false : source
end

#to_markdown(template) ⇒ Object 



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# File 'lib/regexrx2md/regexrx.rb', line 23

def to_markdown(template)
  out = ERB.new(template).result(binding)

  out.force_encoding('utf-8')
end