Class: Card::Content

Inherits:
SimpleDelegator
  • Object
show all
Defined in:
lib/card/content.rb

Constant Summary collapse

ALLOWED_TAGS = 
{}
ATTR_VALUE_RE = 
[/(?<=^')[^']+(?=')/, /(?<=^")[^"]+(?=")/, /\S+/].freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(content, format_or_card, opts = {}) ⇒ Content

Returns a new instance of Content.



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# File 'lib/card/content.rb', line 10

def initialize content, format_or_card, opts={}
  @format =
    if format_or_card.is_a?(Card)
      Format.new format_or_card, format: nil
    else
      format_or_card
    end
  @opts = opts || {}

  content = parse_content content unless content.is_a?(Array)
  super content
end

Instance Attribute Details

#chunks ⇒ Object (readonly)

Returns the value of attribute chunks.



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# File 'lib/card/content.rb', line 8

def chunks
  @chunks
end

#format ⇒ Object (readonly)

Returns the value of attribute format.



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# File 'lib/card/content.rb', line 8

def format
  @format
end

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



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# File 'lib/card/content.rb', line 8

def opts
  @opts
end

#revision ⇒ Object (readonly)

Returns the value of attribute revision.



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# File 'lib/card/content.rb', line 8

def revision
  @revision
end

Class Method Details

.clean!(string, tags = ALLOWED_TAGS) ⇒ Object

this has been hacked for card to allow classes if the class begins with “w-”



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# File 'lib/card/content.rb', line 167

def clean! string, tags=ALLOWED_TAGS
  string.gsub(%r{<(/*)(\w+)([^>]*)>}) do
    raw = $LAST_MATCH_INFO
    tag = raw[2].downcase
    if (attrs = tags[tag])
      html_attribs =
        attrs.each_with_object([tag]) do |attr, pcs|
          q, rest_value = process_attribute attr, raw[3]
          pcs << "#{attr}=#{q}#{rest_value}#{q}" unless rest_value.blank?
        end * ' '
      "<#{raw[1]}#{html_attribs}>"
    else
      ' '
    end
  end.gsub(/<\!--.*?-->/, '')
end

.find_tags(wordstring) ⇒ Object 



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# File 'lib/card/content.rb', line 234

def find_tags wordstring
  tags = []

  # match tags with or without self closing (ie. <foo />)
  wordstring.scan(%r{\<([^\>\s/]+)[^\>]*?\>}).each do |t|
    tags.unshift(t[0])
  end
  # match tags with self closing and mark them as closed
  wordstring.scan(%r{\<([^\>\s/]+)[^\>]*?/\>}).each do |t|
    next unless (x = tags.index(t[0]))
    tags.slice!(x)
  end
  # match close tags
  wordstring.scan(%r{\</([^\>\s/]+)[^\>]*?\>}).each do |t|
    next unless (x = tags.rindex(t[0]))
    tags.slice!(x)
  end
  tags
end

.process_attribute(attr, all_attributes) ⇒ Object 



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# File 'lib/card/content.rb', line 184

def process_attribute attr, all_attributes
  return ['"', nil] unless all_attributes =~ /\b#{attr}\s*=\s*(?=(.))/i
  q = '"'
  rest_value = $'
  (idx = %w(' ").index(Regexp.last_match(1))) &&
    (q = Regexp.last_match(1))
  re = ATTR_VALUE_RE[idx || 2]
  if (match = rest_value.match(re))
    rest_value = match[0]
    if attr == 'class'
      rest_value =
        rest_value.split(/\s+/).select { |s| s =~ /^w-/i }.join(' ')
    end
  end
  [q, rest_value]
end

.truncatewords_with_closing_tags(input, words = 25, _truncate_string = '...') ⇒ Object 



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# File 'lib/card/content.rb', line 209

def truncatewords_with_closing_tags input, words=25,
                                    _truncate_string='...'
  return if input.nil?
  wordlist = input.to_s.split
  l = words.to_i - 1
  l = 0 if l < 0
  wordstring = wordlist.length > l ? wordlist[0..l].join(' ') : input.to_s
  # nuke partial tags at end of snippet
  wordstring.gsub!(/(<[^\>]+)$/, '')

  tags = find_tags wordstring
  tags.each { |t| wordstring += "</#{t}>" }

  if wordlist.length > l
    wordstring += '<span class="closed-content-ellipses">...</span>'
  end

  # wordstring += '...' if wordlist.length > l
  wordstring.gsub! %r{<[/]?br[\s/]*>}, ' '
  # Also a hack -- get rid of <br>'s -- they make line view ugly.
  wordstring.gsub! %r{<[/]?p[^>]*>}, ' '
  ## Also a hack -- get rid of <br>'s -- they make line view ugly.
  wordstring
end

Instance Method Details

#card ⇒ Object 



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# File 'lib/card/content.rb', line 23

def card
  format.card
end

#chunk_list ⇒ Object 



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# File 'lib/card/content.rb', line 27

def chunk_list
  @opts[:chunk_list] || @format.chunk_list
end

#clean_with_space_last!(string, tags = ALLOWED_TAGS) ⇒ Object 



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# File 'lib/card/content.rb', line 202

def clean_with_space_last! string, tags=ALLOWED_TAGS
  cwo = clean_without_space_last!(string, tags)
  cwo.gsub(/(?:^|\b) ((?:&nbsp;)+)/, '\1 ')
end

#each_chunk ⇒ Object 



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# File 'lib/card/content.rb', line 44

def each_chunk
  return enum_for(:each_chunk) unless block_given?
  case __getobj__
  when Hash  then each_value { |v| yield v if v.is_a?(Chunk::Abstract) }
  when Array then each       { |e| yield e if e.is_a?(Chunk::Abstract) }
  when String # noop. strings are parsed in self, so no chunks in a String
  else
    Rails.logger.warn 'error self is unrecognized type' \
                      " #{self.class} #{__getobj__.class}"
  end
end

#find_chunks(chunk_type) ⇒ Object 



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# File 'lib/card/content.rb', line 56

def find_chunks chunk_type
  each_chunk.select { |chunk| chunk.is_a?(chunk_type) }
end

#inspect ⇒ Object 



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# File 'lib/card/content.rb', line 40

def inspect
  "<#{__getobj__.class}:#{card}:#{self}>"
end

#parse_content(content) ⇒ Object 



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# File 'lib/card/content.rb', line 65

def parse_content content
  @chunks = []

  if content.is_a? String
    position = last_position = 0
    prefix_regexp = Chunk.get_prefix_regexp chunk_list
    interval_string = ''

    while (prefix_match = content[position..-1].match(prefix_regexp))
      prefix = prefix_match[0]
      # prefix of matched chunk
      chunk_start = prefix_match.begin(0) + position
      # content index of beginning of chunk
      if prefix_match.begin(0) > 0
        # if matched chunk is not beginning of test string
        interval_string += content[position..chunk_start - 1]
        # hold onto the non-chunk part of the string
      end

      chunk_class = Chunk.find_class_by_prefix prefix
      # get the chunk class from the prefix
      match, offset =
        chunk_class.full_match content[chunk_start..-1], prefix
      # see whether the full chunk actually matches
      # (as opposed to bogus prefix)
      context_ok = chunk_class.context_ok? content, chunk_start
      # make sure there aren't contextual reasons for ignoring this chunk
      position = chunk_start
      # move scanning position up to beginning of chunk

      if match
        # we have a chunk match
        position += (match.end(0) - offset.to_i)
        # move scanning position up to end of chunk
        if context_ok
          @chunks << interval_string unless interval_string.empty?
          # add the nonchunk string to the chunk list
          @chunks << chunk_class.new(match, self)
          # add the chunk to the chunk list
          interval_string = ''
          # reset interval string for next go-round
          last_position = position
          # note that the end of the chunk was the last place where a
          # chunk was found (so far)
        end
      else
        position += 1
        # no match.  look at the next character
      end

      next unless !match || !context_ok
      interval_string += content[chunk_start..position - 1]
      # moving beyond the alleged chunk.
      # append failed string to "nonchunk" string
    end
  end

  if chunks.any?
    if last_position < content.size
      remainder = content[last_position..-1]
      # handle any leftover nonchunk string at the end of content
      @chunks << remainder
    end
    chunks
  else
    content
  end
end

#process_each_chunk(&block) ⇒ Object 



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# File 'lib/card/content.rb', line 60

def process_each_chunk &block
  each_chunk { |chunk| chunk.process_chunk(&block) }
  self
end

#to_s ⇒ Object 



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# File 'lib/card/content.rb', line 31

def to_s
  case __getobj__
  when Array    then map(&:to_s) * ''
  when String   then __getobj__
  when NilClass then '' # raise "Nil Card::Content"
  else               __getobj__.to_s
  end
end