Class: Card::Content

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

Constant Summary collapse

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

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 Card===format_or_card
    Format.new format_or_card, :format=>nil
  else
    format_or_card
  end
  @opts = opts || {}
  
  unless Array === content
    content = parse_content content  
  end
  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 152

def clean!( string, tags = ALLOWED_TAGS )
  string.gsub( /<(\/*)(\w+)([^>]*)>/ ) do
    raw = $~
    tag = raw[2].downcase
    if attrs = tags[tag]
      "<#{raw[1]}#{
        attrs.inject([tag]) do |pcs, attr|
          q='"'
          rest_value=nil
          if raw[3] =~ /\b#{attr}\s*=\s*(?=(.))/i
            rest_value = $'
            idx = %w{' "}.index($1) and q = $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+/).find_all {|s| s=~/^w-/i}*' '
              end
            end
          end
          pcs << "#{attr}=#{q}#{rest_value}#{q}" unless rest_value.blank?
          pcs
        end * ' '
      }>"
    else
      " "
    end
  end.gsub(/<\!--.*?-->/, '')
end

.truncatewords_with_closing_tags(input, words = 25, truncate_string = "...") ⇒ Object 



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# File 'lib/card/content.rb', line 188

def truncatewords_with_closing_tags(input, words = 25, truncate_string = "...")
  if input.nil? then return end
  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 = []

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

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

  wordstring +='<span class="closed-content-ellipses">...</span>' if wordlist.length > l
    #    wordstring += '...' if wordlist.length > l
  wordstring.gsub! /<[\/]?br[\s\/]*>/, ' ' ## Also a hack -- get rid of <br>'s -- they make line view ugly.
  wordstring.gsub! /<[\/]?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 24

def card
  format.card
end

#chunk_list ⇒ Object 



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# File 'lib/card/content.rb', line 28

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 183

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

#each_chunk ⇒ Object 



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# File 'lib/card/content.rb', line 45

def each_chunk
  return enum_for(:each_chunk) unless block_given?
  case __getobj__
    when Hash;   each { |k,v| yield v if Chunk::Abstract===v }
    when Array;  each { |e|   yield e if Chunk::Abstract===e }
    when String; # strings are all parsed in self, so no chunks in a String
    else
      Rails.logger.warn "error self is unrecognized type #{self.class} #{self.__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.kind_of?(chunk_type) }
end

#inspect ⇒ Object 



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# File 'lib/card/content.rb', line 41

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 String===content
    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 if interval_string.size > 0                # 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

      if !match || !context_ok
        interval_string += content[chunk_start..position-1]                    # moving beyond the alleged chunk.  append failed string to "nonchunk" string
      end
    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_content_object(&block) ⇒ Object 



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

def process_content_object &block
  each_chunk { |chunk| chunk.process_chunk &block }
  self
end

#to_s ⇒ Object 



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# File 'lib/card/content.rb', line 32

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