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- # frozen_string_literal: true
-
- # vim:ts=4:sw=4:
- # = RedCloth - Textile and Markdown Hybrid for Ruby
- #
- # Homepage:: http://whytheluckystiff.net/ruby/redcloth/
- # Author:: why the lucky stiff (http://whytheluckystiff.net/)
- # Copyright:: (cc) 2004 why the lucky stiff (and his puppet organizations.)
- # License:: BSD
- #
- # (see http://hobix.com/textile/ for a Textile Reference.)
- #
- # Based on (and also inspired by) both:
- #
- # PyTextile: http://diveintomark.org/projects/textile/textile.py.txt
- # Textism for PHP: http://www.textism.com/tools/textile/
- #
- #
-
- # = RedCloth
- #
- # RedCloth is a Ruby library for converting Textile and/or Markdown
- # into HTML. You can use either format, intermingled or separately.
- # You can also extend RedCloth to honor your own custom text stylings.
- #
- # RedCloth users are encouraged to use Textile if they are generating
- # HTML and to use Markdown if others will be viewing the plain text.
- #
- # == What is Textile?
- #
- # Textile is a simple formatting style for text
- # documents, loosely based on some HTML conventions.
- #
- # == Sample Textile Text
- #
- # h2. This is a title
- #
- # h3. This is a subhead
- #
- # This is a bit of paragraph.
- #
- # bq. This is a blockquote.
- #
- # = Writing Textile
- #
- # A Textile document consists of paragraphs. Paragraphs
- # can be specially formatted by adding a small instruction
- # to the beginning of the paragraph.
- #
- # h[n]. Header of size [n].
- # bq. Blockquote.
- # # Numeric list.
- # * Bulleted list.
- #
- # == Quick Phrase Modifiers
- #
- # Quick phrase modifiers are also included, to allow formatting
- # of small portions of text within a paragraph.
- #
- # \_emphasis\_
- # \_\_italicized\_\_
- # \*strong\*
- # \*\*bold\*\*
- # ??citation??
- # -deleted text-
- # +inserted text+
- # ^superscript^
- # ~subscript~
- # @code@
- # %(classname)span%
- #
- # ==notextile== (leave text alone)
- #
- # == Links
- #
- # To make a hypertext link, put the link text in "quotation
- # marks" followed immediately by a colon and the URL of the link.
- #
- # Optional: text in (parentheses) following the link text,
- # but before the closing quotation mark, will become a Title
- # attribute for the link, visible as a tool tip when a cursor is above it.
- #
- # Example:
- #
- # "This is a link (This is a title) ":http://www.textism.com
- #
- # Will become:
- #
- # <a href="http://www.textism.com" title="This is a title">This is a link</a>
- #
- # == Images
- #
- # To insert an image, put the URL for the image inside exclamation marks.
- #
- # Optional: text that immediately follows the URL in (parentheses) will
- # be used as the Alt text for the image. Images on the web should always
- # have descriptive Alt text for the benefit of readers using non-graphical
- # browsers.
- #
- # Optional: place a colon followed by a URL immediately after the
- # closing ! to make the image into a link.
- #
- # Example:
- #
- # !http://www.textism.com/common/textist.gif(Textist)!
- #
- # Will become:
- #
- # <img src="http://www.textism.com/common/textist.gif" alt="Textist" />
- #
- # With a link:
- #
- # !/common/textist.gif(Textist)!:http://textism.com
- #
- # Will become:
- #
- # <a href="http://textism.com"><img src="/common/textist.gif" alt="Textist" /></a>
- #
- # == Defining Acronyms
- #
- # HTML allows authors to define acronyms via the tag. The definition appears as a
- # tool tip when a cursor hovers over the acronym. A crucial aid to clear writing,
- # this should be used at least once for each acronym in documents where they appear.
- #
- # To quickly define an acronym in Textile, place the full text in (parentheses)
- # immediately following the acronym.
- #
- # Example:
- #
- # ACLU(American Civil Liberties Union)
- #
- # Will become:
- #
- # <abbr title="American Civil Liberties Union">ACLU</abbr>
- #
- # == Adding Tables
- #
- # In Textile, simple tables can be added by separating each column by
- # a pipe.
- #
- # |a|simple|table|row|
- # |And|Another|table|row|
- #
- # Attributes are defined by style definitions in parentheses.
- #
- # table(border:1px solid black).
- # (background:#ddd;color:red). |{}| | | |
- #
- # == Using RedCloth
- #
- # RedCloth is simply an extension of the String class, which can handle
- # Textile formatting. Use it like a String and output HTML with its
- # RedCloth#to_html method.
- #
- # doc = RedCloth.new "
- #
- # h2. Test document
- #
- # Just a simple test."
- #
- # puts doc.to_html
- #
- # By default, RedCloth uses both Textile and Markdown formatting, with
- # Textile formatting taking precedence. If you want to turn off Markdown
- # formatting, to boost speed and limit the processor:
- #
- # class RedCloth::Textile.new( str )
-
- class RedCloth3 < String
- include Redmine::Helpers::URL
-
- VERSION = '3.0.4'
- DEFAULT_RULES = [:textile, :markdown]
-
- #
- # Two accessor for setting security restrictions.
- #
- # This is a nice thing if you're using RedCloth for
- # formatting in public places (e.g. Wikis) where you
- # don't want users to abuse HTML for bad things.
- #
- # If +:filter_html+ is set, HTML which wasn't
- # created by the Textile processor will be escaped.
- #
- # If +:filter_styles+ is set, it will also disable
- # the style markup specifier. ('{color: red}')
- #
- attr_accessor :filter_html, :filter_styles
-
- #
- # Accessor for toggling hard breaks.
- #
- # If +:hard_breaks+ is set, single newlines will
- # be converted to HTML break tags. This is the
- # default behavior for traditional RedCloth.
- #
- attr_accessor :hard_breaks
-
- # Accessor for toggling lite mode.
- #
- # In lite mode, block-level rules are ignored. This means
- # that tables, paragraphs, lists, and such aren't available.
- # Only the inline markup for bold, italics, entities and so on.
- #
- # r = RedCloth.new( "And then? She *fell*!", [:lite_mode] )
- # r.to_html
- # #=> "And then? She <strong>fell</strong>!"
- #
- attr_accessor :lite_mode
-
- #
- # Accessor for toggling span caps.
- #
- # Textile places `span' tags around capitalized
- # words by default, but this wreaks havoc on Wikis.
- # If +:no_span_caps+ is set, this will be
- # suppressed.
- #
- attr_accessor :no_span_caps
-
- #
- # Establishes the markup predence. Available rules include:
- #
- # == Textile Rules
- #
- # The following textile rules can be set individually. Or add the complete
- # set of rules with the single :textile rule, which supplies the rule set in
- # the following precedence:
- #
- # refs_textile:: Textile references (i.e. [hobix]http://hobix.com/)
- # block_textile_table:: Textile table block structures
- # block_textile_lists:: Textile list structures
- # block_textile_prefix:: Textile blocks with prefixes (i.e. bq., h2., etc.)
- # inline_textile_image:: Textile inline images
- # inline_textile_link:: Textile inline links
- # inline_textile_span:: Textile inline spans
- # glyphs_textile:: Textile entities (such as em-dashes and smart quotes)
- #
- # == Markdown
- #
- # refs_markdown:: Markdown references (for example: [hobix]: http://hobix.com/)
- # block_markdown_setext:: Markdown setext headers
- # block_markdown_atx:: Markdown atx headers
- # block_markdown_rule:: Markdown horizontal rules
- # block_markdown_bq:: Markdown blockquotes
- # block_markdown_lists:: Markdown lists
- # inline_markdown_link:: Markdown links
- attr_accessor :rules
-
- # Returns a new RedCloth object, based on _string_ and
- # enforcing all the included _restrictions_.
- #
- # r = RedCloth.new( "h1. A <b>bold</b> man", [:filter_html] )
- # r.to_html
- # #=>"<h1>A <b>bold</b> man</h1>"
- #
- def initialize( string, restrictions = [] )
- restrictions.each { |r| method( "#{r}=" ).call( true ) }
- super( string )
- end
-
- #
- # Generates HTML from the Textile contents.
- #
- # r = RedCloth.new( "And then? She *fell*!" )
- # r.to_html( true )
- # #=>"And then? She <strong>fell</strong>!"
- #
- def to_html( *rules )
- rules = DEFAULT_RULES if rules.empty?
- # make our working copy
- text = self.dup
-
- @urlrefs = {}
- @shelf = []
- textile_rules = [:block_textile_table, :block_textile_lists,
- :block_textile_prefix, :inline_textile_image, :inline_textile_code,
- :inline_textile_span, :inline_textile_link, :glyphs_textile]
- markdown_rules = [:refs_markdown, :block_markdown_setext, :block_markdown_atx, :block_markdown_rule,
- :block_markdown_bq, :block_markdown_lists,
- :inline_markdown_reflink, :inline_markdown_link]
- @rules = rules.collect do |rule|
- case rule
- when :markdown
- markdown_rules
- when :textile
- textile_rules
- else
- rule
- end
- end.flatten
-
- # standard clean up
- incoming_entities text
- clean_white_space text
-
- # start processor
- @pre_list = []
- rip_offtags text
- no_textile text
- escape_html_tags text
- # need to do this before #hard_break and #blocks
- block_textile_quotes text unless @lite_mode
- hard_break text
- unless @lite_mode
- refs text
- blocks text
- end
- inline text
- smooth_offtags text
-
- retrieve text
-
- text.gsub!( /<\/?notextile>/, '' )
- text.gsub!( /x%x%/, '&' )
- clean_html text if filter_html
- text.strip!
- text
- end
-
- private
-
- #
- # Mapping of 8-bit ASCII codes to HTML numerical entity equivalents.
- # (from PyTextile)
- #
- TEXTILE_TAGS =
- [[128, 8364], [129, 0], [130, 8218], [131, 402], [132, 8222], [133, 8230],
- [134, 8224], [135, 8225], [136, 710], [137, 8240], [138, 352], [139, 8249],
- [140, 338], [141, 0], [142, 0], [143, 0], [144, 0], [145, 8216], [146, 8217],
- [147, 8220], [148, 8221], [149, 8226], [150, 8211], [151, 8212], [152, 732],
- [153, 8482], [154, 353], [155, 8250], [156, 339], [157, 0], [158, 0], [159, 376]].
- collect! do |a, b|
- [a.chr, ( b.zero? and "" or "&#{b};" )]
- end
- #
- # Regular expressions to convert to HTML.
- #
- A_HLGN = /(?:(?:<>|<|>|\=|[()]+)+)/
- A_VLGN = /[\-^~]/
- C_CLAS = '(?:\([^")]+\))'
- C_LNGE = '(?:\[[a-z\-_]+\])'
- C_STYL = '(?:\{[^{][^"}]+\})'
- S_CSPN = '(?:\\\\\d+)'
- S_RSPN = '(?:/\d+)'
- A = "(?:#{A_HLGN}?#{A_VLGN}?|#{A_VLGN}?#{A_HLGN}?)"
- S = "(?:#{S_CSPN}?#{S_RSPN}|#{S_RSPN}?#{S_CSPN}?)"
- C = "(?:#{C_CLAS}?#{C_STYL}?#{C_LNGE}?|#{C_STYL}?#{C_LNGE}?#{C_CLAS}?|#{C_LNGE}?#{C_STYL}?#{C_CLAS}?)"
- # PUNCT = Regexp::quote( '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' )
- PUNCT = Regexp::quote( '!"#$%&\'*+,-./:;=?@\\^_`|~' )
- PUNCT_NOQ = Regexp::quote( '!"#$&\',./:;=?@\\`|' )
- PUNCT_Q = Regexp::quote( '*-_+^~%' )
- HYPERLINK = '(\S+?)([^\w\s/;=\?]*?)(?=\s|<|$)'
-
- # Text markup tags, don't conflict with block tags
- SIMPLE_HTML_TAGS = [
- 'tt', 'b', 'i', 'big', 'small', 'em', 'strong', 'dfn', 'code',
- 'samp', 'kbd', 'var', 'cite', 'abbr', 'acronym', 'a', 'img', 'br',
- 'br', 'map', 'q', 'sub', 'sup', 'span', 'bdo'
- ]
-
- QTAGS = [
- ['**', 'b', :limit],
- ['*', 'strong', :limit],
- ['??', 'cite', :limit],
- ['-', 'del', :limit],
- ['__', 'i', :limit],
- ['_', 'em', :limit],
- ['%', 'span', :limit],
- ['+', 'ins', :limit],
- ['^', 'sup', :limit],
- ['~', 'sub', :limit]
- ]
- QTAGS_JOIN = QTAGS.map {|rc, ht, rtype| Regexp::quote rc}.join('|')
-
- QTAGS.collect! do |rc, ht, rtype|
- rcq = Regexp::quote rc
- re =
- case rtype
- when :limit
- /(^|[>\s\(]) # sta
- (?!\-\-)
- (#{QTAGS_JOIN}|) # oqs
- (#{rcq}) # qtag
- ([[:word:]]|[^\s].*?[^\s]) # content
- (?!\-\-)
- #{rcq}
- (#{QTAGS_JOIN}|) # oqa
- (?=[[:punct:]]|<|\s|\)|$)/x
- else
- /(#{rcq})
- (#{C})
- (?::(\S+))?
- ([[:word:]]|[^\s\-].*?[^\s\-])
- #{rcq}/xm
- end
- [rc, ht, re, rtype]
- end
-
- # Elements to handle
- GLYPHS = [
- # [ /([^\s\[{(>])?\'([dmst]\b|ll\b|ve\b|\s|:|$)/, '\1’\2' ], # single closing
- # [ /([^\s\[{(>#{PUNCT_Q}][#{PUNCT_Q}]*)\'/, '\1’' ], # single closing
- # [ /\'(?=[#{PUNCT_Q}]*(s\b|[\s#{PUNCT_NOQ}]))/, '’' ], # single closing
- # [ /\'/, '‘' ], # single opening
- # [ /</, '<' ], # less-than
- # [ />/, '>' ], # greater-than
- # [ /([^\s\[{(])?"(\s|:|$)/, '\1”\2' ], # double closing
- # [ /([^\s\[{(>#{PUNCT_Q}][#{PUNCT_Q}]*)"/, '\1”' ], # double closing
- # [ /"(?=[#{PUNCT_Q}]*[\s#{PUNCT_NOQ}])/, '”' ], # double closing
- # [ /"/, '“' ], # double opening
- # [ /\b( )?\.{3}/, '\1…' ], # ellipsis
- # [ /\b([A-Z][A-Z0-9]{2,})\b(?:[(]([^)]*)[)])/, '<acronym title="\2">\1</acronym>' ], # 3+ uppercase acronym
- # [ /(^|[^"][>\s])([A-Z][A-Z0-9 ]+[A-Z0-9])([^<A-Za-z0-9]|$)/, '\1<span class="caps">\2</span>\3', :no_span_caps ], # 3+ uppercase caps
- # [ /(\.\s)?\s?--\s?/, '\1—' ], # em dash
- # [ /\s->\s/, ' → ' ], # right arrow
- # [ /\s-\s/, ' – ' ], # en dash
- # [ /(\d+) ?x ?(\d+)/, '\1×\2' ], # dimension sign
- # [ /\b ?[(\[]TM[\])]/i, '™' ], # trademark
- # [ /\b ?[(\[]R[\])]/i, '®' ], # registered
- # [ /\b ?[(\[]C[\])]/i, '©' ] # copyright
- ]
-
- H_ALGN_VALS = {
- '<' => 'left',
- '=' => 'center',
- '>' => 'right',
- '<>' => 'justify'
- }
-
- V_ALGN_VALS = {
- '^' => 'top',
- '-' => 'middle',
- '~' => 'bottom'
- }
-
- #
- # Flexible HTML escaping
- #
- def htmlesc( str, mode=:Quotes )
- if str
- str.gsub!( '&', '&' )
- str.gsub!( '"', '"' ) if mode != :NoQuotes
- str.gsub!( "'", ''' ) if mode == :Quotes
- str.gsub!( '<', '<')
- str.gsub!( '>', '>')
- end
- str
- end
-
- # Search and replace for Textile glyphs (quotes, dashes, other symbols)
- def pgl( text )
- # GLYPHS.each do |re, resub, tog|
- # next if tog and method( tog ).call
- # text.gsub! re, resub
- # end
- text.gsub!(/\b([A-Z][A-Z0-9]{1,})\b(?:[(]([^)]*)[)])/) do |m|
- "<abbr title=\"#{htmlesc $2}\">#{$1}</abbr>"
- end
- end
-
- # Parses Textile attribute lists and builds an HTML attribute string
- def pba( text_in, element = "" )
- return +'' unless text_in
-
- style = []
- text = text_in.dup
- if element == 'td'
- colspan = $1 if text =~ /\\(\d+)/
- rowspan = $1 if text =~ /\/(\d+)/
- style << "vertical-align:#{v_align($&)};" if text =~ A_VLGN
- end
-
- if text.sub!( /\{([^"}]*)\}/, '' ) && !filter_styles
- sanitized = sanitize_styles($1)
- style << "#{sanitized};" unless sanitized.blank?
- end
-
- lang = $1 if
- text.sub!( /\[([a-z\-_]+?)\]/, '' )
-
- cls = $1 if
- text.sub!( /\(([^()]+?)\)/, '' )
-
- style << "padding-left:#{$1.length}em;" if
- text.sub!( /([(]+)/, '' )
-
- style << "padding-right:#{$1.length}em;" if text.sub!( /([)]+)/, '' )
-
- style << "text-align:#{h_align($&)};" if text =~ A_HLGN
-
- cls, id = $1, $2 if cls =~ /^(.*?)#(.*)$/
-
- # add wiki-class- and wiki-id- to classes and ids to prevent setting of
- # arbitrary classes and ids
- cls = cls.split(/\s+/).map do |c|
- c.starts_with?('wiki-class-') ? c : "wiki-class-#{c}"
- end.join(' ') if cls
-
- id = id.starts_with?('wiki-id-') ? id : "wiki-id-#{id}" if id
-
- atts = +''
- atts << " style=\"#{style.join}\"" unless style.empty?
- atts << " class=\"#{cls}\"" unless cls.to_s.empty?
- atts << " lang=\"#{lang}\"" if lang
- atts << " id=\"#{id}\"" if id
- atts << " colspan=\"#{colspan}\"" if colspan
- atts << " rowspan=\"#{rowspan}\"" if rowspan
-
- atts
- end
-
- STYLES_RE = /^(color|(min-|max-)?+(width|height)|border|background|padding|margin|font|text|float)(-[a-z]+)*:\s*((\d+%?|\d+px|\d+(\.\d+)?em|#[0-9a-f]+|[a-z]+)\s*)+$/i
-
- def sanitize_styles(str)
- styles = str.split(";").map(&:strip)
- styles.reject! do |style|
- !style.match(STYLES_RE)
- end
- styles.join(";")
- end
-
- TABLE_RE = /^(?:table(_?#{S}#{A}#{C})\. ?\n)?^(#{A}#{C}\.? ?\|.*?\|)(\n\n|\Z)/m
-
- # Parses a Textile table block, building HTML from the result.
- def block_textile_table( text )
- text.gsub!( TABLE_RE ) do |matches|
- tatts, fullrow = $~[1..2]
- tatts = pba( tatts, 'table' )
- tatts = shelve( tatts ) if tatts
- rows = []
- fullrow.gsub!(/([^|\s])\s*\n/, "\\1<br />")
- fullrow.each_line do |row|
- ratts, row = pba( $1, 'tr' ), $2 if row =~ /^(#{A}#{C}\. )(.*)/m
- cells = []
- # the regexp prevents wiki links with a | from being cut as cells
- row.scan(/\|(_?#{S}#{A}#{C}\. ?)?((\[\[[^|\]]*\|[^|\]]*\]\]|[^|])*?)(?=\|)/) do |modifiers, cell|
- ctyp = 'd'
- ctyp = 'h' if modifiers && modifiers =~ /^_/
-
- catts = nil
- catts = pba( modifiers, 'td' ) if modifiers
-
- catts = shelve( catts ) if catts
- cells << "\t\t\t<t#{ctyp}#{catts}>#{cell}</t#{ctyp}>"
- end
- ratts = shelve( ratts ) if ratts
- rows << "\t\t<tr#{ratts}>\n#{cells.join("\n")}\n\t\t</tr>"
- end
- "\t<table#{tatts}>\n#{rows.join("\n")}\n\t</table>\n\n"
- end
- end
-
- LISTS_RE = /^([#*]+?#{C} .*?)$(?![^#*])/m
- LISTS_CONTENT_RE = /^([#*]+)(#{A}#{C}) (.*)$/m
-
- # Parses Textile lists and generates HTML
- def block_textile_lists( text )
- text.gsub!( LISTS_RE ) do |match|
- lines = match.split( /\n/ )
- last_line = -1
- depth = []
- lines.each_with_index do |line, line_id|
- if line =~ LISTS_CONTENT_RE
- tl,atts,content = $~[1..3]
- if depth.last
- if depth.last.length > tl.length
- (depth.length - 1).downto(0) do |i|
- break if depth[i].length == tl.length
- lines[line_id - 1] << "</li>\n\t</#{lT(depth[i])}l>\n\t"
- depth.pop
- end
- end
- if depth.last and depth.last.length == tl.length
- lines[line_id - 1] << '</li>'
- end
- end
- if depth.last != tl
- depth << tl
- atts = pba( atts )
- atts = shelve( atts ) if atts
- lines[line_id] = +"\t<#{lT(tl)}l#{atts}>\n\t<li>#{content}"
- else
- lines[line_id] = +"\t\t<li>#{content}"
- end
- last_line = line_id
- else
- last_line = line_id
- end
- if line_id - last_line > 1 or line_id == lines.length - 1
- while v = depth.pop
- lines[last_line] << "</li>\n\t</#{lT(v)}l>"
- end
- end
- end
- lines.join( "\n" )
- end
- end
-
- QUOTES_RE = /(^>+([^\n]*?)(\n|$))+/m
- QUOTES_CONTENT_RE = /^([> ]+)(.*)$/m
-
- def block_textile_quotes( text )
- text.gsub!( QUOTES_RE ) do |match|
- lines = match.split( /\n/ )
- quotes = +''
- indent = 0
- lines.each do |line|
- line =~ QUOTES_CONTENT_RE
- bq,content = $1, $2
- l = bq.count('>')
- if l != indent
- quotes << ("\n\n" + (l>indent ? '<blockquote>' * (l-indent) : '</blockquote>' * (indent-l)) + "\n\n")
- indent = l
- end
- quotes << (content + "\n")
- end
- quotes << ("\n" + '</blockquote>' * indent + "\n\n")
- quotes
- end
- end
-
- CODE_RE = /(\W)
- @
- (?:\|(\w+?)\|)?
- (.+?)
- @
- (?=\W)/x
-
- def inline_textile_code( text )
- text.gsub!( CODE_RE ) do |m|
- before,lang,code,after = $~[1..4]
- lang = " lang=\"#{lang}\"" if lang
- rip_offtags( +"#{before}<code#{lang}>#{code}</code>#{after}", false )
- end
- end
-
- def lT( text )
- /\#$/.match?(text) ? 'o' : 'u'
- end
-
- def hard_break( text )
- text.gsub!( /(.)\n(?!\Z| *([#*=]+(\s|$)|[{|]))/, "\\1<br />" ) if hard_breaks
- end
-
- BLOCKS_GROUP_RE = /\n{2,}(?! )/m
-
- def blocks( text, deep_code = false )
- text.replace( text.split( BLOCKS_GROUP_RE ).collect do |blk|
- plain = blk !~ /\A[#*> ]/
-
- # skip blocks that are complex HTML
- if blk =~ /^<\/?(\w+).*>/ and not SIMPLE_HTML_TAGS.include? $1
- blk
- else
- # search for indentation levels
- blk.strip!
- if blk.empty?
- blk
- else
- code_blk = nil
- blk.gsub!( /((?:\n(?:\n^ +[^\n]*)+)+)/m ) do |iblk|
- flush_left iblk
- blocks iblk, plain
- iblk.gsub( /^(\S)/, "\t\\1" )
- if plain
- code_blk = iblk; ""
- else
- iblk
- end
- end
-
- block_applied = 0
- @rules.each do |rule_name|
- block_applied += 1 if rule_name.to_s.match /^block_/ and method(rule_name).call(blk)
- end
- if block_applied.zero?
- if deep_code
- blk = "\t<pre><code>#{blk}</code></pre>"
- else
- blk = "\t<p>#{blk}</p>"
- end
- end
- # hard_break blk
- blk + "\n#{code_blk}"
- end
- end
- end.join( "\n\n" ) )
- end
-
- def textile_bq( tag, atts, cite, content )
- cite, cite_title = check_refs( cite )
- cite = " cite=\"#{cite}\"" if cite
- atts = shelve( atts ) if atts
- "\t<blockquote#{cite}>\n\t\t<p#{atts}>#{content}</p>\n\t</blockquote>"
- end
-
- def textile_p( tag, atts, cite, content )
- atts = shelve( atts ) if atts
- "\t<#{tag}#{atts}>#{content}</#{tag}>"
- end
-
- alias textile_h1 textile_p
- alias textile_h2 textile_p
- alias textile_h3 textile_p
- alias textile_h4 textile_p
- alias textile_h5 textile_p
- alias textile_h6 textile_p
-
- def textile_fn_( tag, num, atts, cite, content )
- atts << " id=\"fn#{num}\" class=\"footnote\""
- content = "<sup>#{num}</sup> #{content}"
- atts = shelve( atts ) if atts
- "\t<p#{atts}>#{content}</p>"
- end
-
- BLOCK_RE = /^(([a-z]+)(\d*))(#{A}#{C})\.(?::(\S+))? (.*)$/m
-
- def block_textile_prefix( text )
- if text =~ BLOCK_RE
- tag,tagpre,num,atts,cite,content = $~[1..6]
- atts = pba( atts )
-
- # pass to prefix handler
- replacement = nil
- if respond_to? "textile_#{tag}", true
- replacement = method( "textile_#{tag}" ).call( tag, atts, cite, content )
- elsif respond_to? "textile_#{tagpre}_", true
- replacement = method( "textile_#{tagpre}_" ).call( tagpre, num, atts, cite, content )
- end
- text.gsub!( $& ) { replacement } if replacement
- end
- end
-
- SETEXT_RE = /\A(.+?)\n([=-])[=-]* *$/m
- def block_markdown_setext( text )
- if text =~ SETEXT_RE
- tag = ($2 == "=" ? "h1" : "h2")
- blk, cont = "<#{tag}>#{$1}</#{tag}>", $'
- blocks cont
- text.replace( blk + cont )
- end
- end
-
- ATX_RE = /\A(\#{1,6}) # $1 = string of #'s
- [ ]*
- (.+?) # $2 = Header text
- [ ]*
- \#* # optional closing #'s (not counted)
- $/x
- def block_markdown_atx( text )
- if text =~ ATX_RE
- tag = "h#{$1.length}"
- blk, cont = "<#{tag}>#{$2}</#{tag}>\n\n", $'
- blocks cont
- text.replace( blk + cont )
- end
- end
-
- MARKDOWN_BQ_RE = /\A(^ *> ?.+$(.+\n)*\n*)+/m
-
- def block_markdown_bq( text )
- text.gsub!( MARKDOWN_BQ_RE ) do |blk|
- blk.gsub!( /^ *> ?/, '' )
- flush_left blk
- blocks blk
- blk.gsub!( /^(\S)/, "\t\\1" )
- "<blockquote>\n#{blk}\n</blockquote>\n\n"
- end
- end
-
- MARKDOWN_RULE_RE = /^(#{
- ['*', '-', '_'].collect { |ch| ' ?(' + Regexp::quote( ch ) + ' ?){3,}' }.join( '|' )
- })$/
-
- def block_markdown_rule( text )
- text.gsub!( MARKDOWN_RULE_RE ) do |blk|
- "<hr />"
- end
- end
-
- # XXX TODO XXX
- def block_markdown_lists( text )
- end
-
- def inline_textile_span( text )
- QTAGS.each do |qtag_rc, ht, qtag_re, rtype|
- text.gsub!( qtag_re ) do |m|
- case rtype
- when :limit
- sta,oqs,qtag,content,oqa = $~[1..6]
- atts = nil
- if content =~ /^(#{C})(.+)$/
- atts, content = $~[1..2]
- end
- else
- qtag,atts,cite,content = $~[1..4]
- sta = ''
- end
- atts = pba( atts )
- atts = shelve( atts ) if atts
-
- "#{sta}#{oqs}<#{ht}#{atts}>#{content}</#{ht}>#{oqa}"
- end
- end
- end
-
- LINK_RE = /
- (
- ([\s\[{(]|[#{PUNCT}])? # $pre
- " # start
- (#{C}) # $atts
- ([^"\n]+?) # $text
- \s?
- (?:\(([^)]+?)\)(?="))? # $title
- ":
- ( # $url
- (\/|[a-zA-Z]+:\/\/|www\.|mailto:) # $proto
- [[:alnum:]_\/]\S+?
- )
- (\/)? # $slash
- ([^[:alnum:]_\=\/;\(\)\-]*?) # $post
- )
- (?=<|\s|$)
- /x
-
- def inline_textile_link( text )
- text.gsub!( LINK_RE ) do |m|
- all,pre,atts,text,title,url,proto,slash,post = $~[1..9]
- if text.include?('<br />')
- all
- else
- url, url_title = check_refs(url)
- title ||= url_title
- # Idea below : an URL with unbalanced parethesis and
- # ending by ')' is put into external parenthesis
- if url[-1] == ")" and ((url.count("(") - url.count(")")) < 0)
- url = url[0..-2] # discard closing parenth from url
- post = ")" + post # add closing parenth to post
- end
-
- url = htmlesc(url.dup)
- next all if url.downcase.start_with?('javascript:')
-
- atts = pba(atts)
- atts = +" href=\"#{url}#{slash}\"#{atts}"
- atts << " title=\"#{htmlesc title}\"" if title
- atts = shelve(atts) if atts
- external = (url =~ /^https?:\/\//) ? ' class="external"' : ''
- "#{pre}<a#{atts}#{external}>#{text}</a>#{post}"
- end
- end
- end
-
- MARKDOWN_REFLINK_RE = /
- \[([^\[\]]+)\] # $text
- [ ]? # opt. space
- (?:\n[ ]*)? # one optional newline followed by spaces
- \[(.*?)\] # $id
- /x
-
- def inline_markdown_reflink( text )
- text.gsub!( MARKDOWN_REFLINK_RE ) do |m|
- text, id = $~[1..2]
-
- if id.empty?
- url, title = check_refs( text )
- else
- url, title = check_refs( id )
- end
-
- atts = " href=\"#{url}\""
- atts << " title=\"#{title}\"" if title
- atts = shelve( atts )
-
- "<a#{atts}>#{text}</a>"
- end
- end
-
- MARKDOWN_LINK_RE = /
- \[([^\[\]]+)\] # $text
- \( # open paren
- [ \t]* # opt space
- <?(.+?)>? # $href
- [ \t]* # opt space
- (?: # whole title
- (['"]) # $quote
- (.*?) # $title
- \3 # matching quote
- )? # title is optional
- \)
- /x
-
- def inline_markdown_link( text )
- text.gsub!( MARKDOWN_LINK_RE ) do |m|
- text, url, quote, title = $~[1..4]
-
- atts = " href=\"#{url}\""
- atts << " title=\"#{title}\"" if title
- atts = shelve( atts )
-
- "<a#{atts}>#{text}</a>"
- end
- end
-
- TEXTILE_REFS_RE = /(^ *)\[([^\[\n]+?)\](#{HYPERLINK})(?=\s|$)/
- MARKDOWN_REFS_RE = /(^ *)\[([^\n]+?)\]:\s+<?(#{HYPERLINK})>?(?:\s+"((?:[^"]|\\")+)")?(?=\s|$)/m
-
- def refs( text )
- @rules.each do |rule_name|
- method( rule_name ).call( text ) if rule_name.to_s.match? /^refs_/
- end
- end
-
- def refs_textile( text )
- text.gsub!( TEXTILE_REFS_RE ) do |m|
- flag, url = $~[2..3]
- @urlrefs[flag.downcase] = [url, nil]
- nil
- end
- end
-
- def refs_markdown( text )
- text.gsub!( MARKDOWN_REFS_RE ) do |m|
- flag, url = $~[2..3]
- title = $~[6]
- @urlrefs[flag.downcase] = [url, title]
- nil
- end
- end
-
- def check_refs( text )
- ret = @urlrefs[text.downcase] if text
- ret || [text, nil]
- end
-
- IMAGE_RE = /
- (>|\s|^) # start of line?
- \! # opening
- (\<|\=|\>)? # optional alignment atts
- (#{C}) # optional style,class atts
- (?:\. )? # optional dot-space
- ([^\s(!]+?) # presume this is the src
- \s? # optional space
- (?:\(((?:[^\(\)]|\([^\)]+\))+?)\))? # optional title
- \! # closing
- (?::#{HYPERLINK})? # optional href
- /x
-
- def inline_textile_image( text )
- text.gsub!( IMAGE_RE ) do |m|
- stln,algn,atts,url,title,href,href_a1,href_a2 = $~[1..8]
- htmlesc title
- atts = pba( atts )
- atts = +" src=\"#{htmlesc url.dup}\"#{atts}"
- atts << " title=\"#{title}\"" if title
- atts << " alt=\"#{title}\""
- # size = @getimagesize($url);
- # if($size) $atts.= " $size[3]";
-
- href, alt_title = check_refs( href ) if href
- url, url_title = check_refs( url )
-
- next m unless uri_with_safe_scheme?(url)
- if href
- href = htmlesc(href.dup)
- next m if href.downcase.start_with?('javascript:')
- end
-
- out = +''
- out << "<a#{shelve(" href=\"#{href}\"")}>" if href
- out << "<img#{shelve(atts)} />"
- out << "</a>#{href_a1}#{href_a2}" if href
-
- if algn
- algn = h_align( algn )
- if stln == "<p>"
- out = "<p style=\"float:#{algn}\">#{out}"
- else
- out = "#{stln}<span style=\"float:#{algn}\">#{out}</span>"
- end
- else
- out = stln + out
- end
-
- out
- end
- end
-
- def shelve( val )
- @shelf << val
- " :redsh##{@shelf.length}:"
- end
-
- def retrieve( text )
- text.gsub!(/ :redsh#(\d+):/) do
- @shelf[$1.to_i - 1] || $&
- end
- end
-
- def incoming_entities( text )
- ## turn any incoming ampersands into a dummy character for now.
- ## This uses a negative lookahead for alphanumerics followed by a semicolon,
- ## implying an incoming html entity, to be skipped
-
- text.gsub!( /&(?![#a-z0-9]+;)/i, "x%x%" )
- end
-
- def no_textile( text )
- text.gsub!(/(^|\s)==([^=]+.*?)==(\s|$)?/,
- '\1<notextile>\2</notextile>\3')
- text.gsub!(/^ *==([^=]+.*?)==/m,
- '\1<notextile>\2</notextile>\3')
- end
-
- def clean_white_space( text )
- # normalize line breaks
- text.gsub!( /\r\n/, "\n" )
- text.tr!( "\r", "\n" )
- text.gsub!( /\t/, ' ' )
- text.gsub!( /^ +$/, '' )
- text.gsub!( /\n{3,}/, "\n\n" )
- text.gsub!( /"$/, "\" " )
-
- # if entire document is indented, flush
- # to the left side
- flush_left text
- end
-
- def flush_left( text )
- if /(?![\r\n\t ])[[:cntrl:]]/.match?(text)
- text.gsub!(/(?![\r\n\t ])[[:cntrl:]]/, '')
- end
- if /^ +\S/.match?(text)
- indt = 0
- indt += 1 until /^ {#{indt}}\S/.match?(text)
- if indt.nonzero?
- text.gsub!( /^ {#{indt}}/, '' )
- end
- end
- end
-
- def footnote_ref( text )
- text.gsub!(/\b\[([0-9]+?)\](\s)?/,
- '<sup><a href="#fn\1">\1</a></sup>\2')
- end
-
- OFFTAGS = /(code|pre|kbd|notextile)/
- OFFTAG_MATCH = /(?:(<\/#{OFFTAGS}\b>)|(<#{OFFTAGS}\b[^>]*>))(.*?)(?=<\/?#{OFFTAGS}\b\W|\Z)/mi
- OFFTAG_OPEN = /<#{OFFTAGS}/
- OFFTAG_CLOSE = /<\/?#{OFFTAGS}/
- HASTAG_MATCH = /(<\/?\w[^\n]*?>)/m
- ALLTAG_MATCH = /(<\/?\w[^\n]*?>)|.*?(?=<\/?\w[^\n]*?>|$)/m
-
- def glyphs_textile( text, level = 0 )
- if text !~ HASTAG_MATCH
- pgl text
- footnote_ref text
- else
- codepre = 0
- text.gsub!( ALLTAG_MATCH ) do |line|
- ## matches are off if we're between <code>, <pre> etc.
- if $1
- if OFFTAG_OPEN.match?(line)
- codepre += 1
- elsif OFFTAG_CLOSE.match?(line)
- codepre -= 1
- codepre = 0 if codepre < 0
- end
- elsif codepre.zero?
- glyphs_textile( line, level + 1 )
- else
- htmlesc( line, :NoQuotes )
- end
- # p [level, codepre, line]
-
- line
- end
- end
- end
-
- def rip_offtags( text, escape_aftertag=true, escape_line=true )
- if text =~ /<.*>/
- ## strip and encode <pre> content
- codepre, used_offtags = 0, {}
- text.gsub!( OFFTAG_MATCH ) do |line|
- if $3
- first, offtag, aftertag = $3, $4, $5
- codepre += 1
- used_offtags[offtag] = true
- if codepre - used_offtags.length > 0
- htmlesc( line, :NoQuotes ) if escape_line
- @pre_list.last << line
- line = +""
- else
- ### htmlesc is disabled between CODE tags which will be parsed with highlighter
- ### Regexp in formatter.rb is : /<code\s+class="(\w+)">\s?(.+)/m
- ### NB: some changes were made not to use $N variables, because we use "match"
- ### and it breaks following lines
- htmlesc( aftertag, :NoQuotes ) if aftertag && escape_aftertag && !first.match(/<code\s+class="(\w+)">/)
- line = +"<redpre##{@pre_list.length}>"
- first.match(/<#{OFFTAGS}([^>]*)>/)
- tag = $1
- $2.to_s.match(/(class\=("[^"]+"|'[^']+'))/i)
- tag << " #{$1}" if $1 && tag == 'code'
- @pre_list << +"<#{tag}>#{aftertag}"
- end
- elsif $1 and codepre > 0
- if codepre - used_offtags.length > 0
- htmlesc( line, :NoQuotes ) if escape_line
- @pre_list.last << line
- line = +""
- end
- codepre -= 1 unless codepre.zero?
- used_offtags = {} if codepre.zero?
- end
- line
- end
- end
- text
- end
-
- def smooth_offtags( text )
- unless @pre_list.empty?
- ## replace <pre> content
- text.gsub!( /<redpre#(\d+)>/ ) { @pre_list[$1.to_i] }
- end
- end
-
- def inline( text )
- [/^inline_/, /^glyphs_/].each do |meth_re|
- @rules.each do |rule_name|
- method( rule_name ).call( text ) if rule_name.to_s.match( meth_re )
- end
- end
- end
-
- def h_align( text )
- H_ALGN_VALS[text]
- end
-
- def v_align( text )
- V_ALGN_VALS[text]
- end
-
- def textile_popup_help( name, windowW, windowH )
- ' <a target="_blank" href="http://hobix.com/textile/#' + helpvar + '" onclick="window.open(this.href, \'popupwindow\', \'width=' + windowW + ',height=' + windowH + ',scrollbars,resizable\'); return false;">' + name + '</a><br />'
- end
-
- # HTML cleansing stuff
- BASIC_TAGS = {
- 'a' => ['href', 'title'],
- 'img' => ['src', 'alt', 'title'],
- 'br' => [],
- 'i' => nil,
- 'u' => nil,
- 'b' => nil,
- 'pre' => nil,
- 'kbd' => nil,
- 'code' => ['lang'],
- 'cite' => nil,
- 'strong' => nil,
- 'em' => nil,
- 'ins' => nil,
- 'sup' => nil,
- 'sub' => nil,
- 'del' => nil,
- 'table' => nil,
- 'tr' => nil,
- 'td' => ['colspan', 'rowspan'],
- 'th' => nil,
- 'ol' => nil,
- 'ul' => nil,
- 'li' => nil,
- 'p' => nil,
- 'h1' => nil,
- 'h2' => nil,
- 'h3' => nil,
- 'h4' => nil,
- 'h5' => nil,
- 'h6' => nil,
- 'blockquote' => ['cite']
- }
-
- def clean_html( text, tags = BASIC_TAGS )
- text.gsub!( /<!\[CDATA\[/, '' )
- text.gsub!( /<(\/*)(\w+)([^>]*)>/ ) do
- raw = $~
- tag = raw[2].downcase
- if tags.has_key? tag
- pcs = [tag]
- tags[tag].each do |prop|
- ['"', "'", ''].each do |q|
- q2 = ( q != '' ? q : '\s' )
- if raw[3] =~ /#{prop}\s*=\s*#{q}([^#{q2}]+)#{q}/i
- attrv = $1
- next if prop == 'src' and attrv =~ %r{^(?!http)\w+:}
- pcs << "#{prop}=\"#{$1.gsub('"', '\\"')}\""
- break
- end
- end
- end if tags[tag]
- "<#{raw[1]}#{pcs.join " "}>"
- else
- " "
- end
- end
- end
-
- ALLOWED_TAGS = %w(redpre pre code kbd notextile)
- def escape_html_tags(text)
- text.gsub!(%r{<(\/?([!\w]+)[^<>\n]*)(>?)}) do |m|
- if ALLOWED_TAGS.include?($2) && $3.present?
- "<#{$1}#{$3}"
- else
- "<#{$1}#{'>' unless $3.blank?}"
- end
- end
- end
- end
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