Module: Kramdown::Parser::Html::Parser
- Includes:
- Constants
- Included in:
- Kramdown::Parser::Html, Kramdown
- Defined in:
- lib/kramdown/parser/html.rb
Overview
Contains the parsing methods. This module can be mixed into any parser to get HTML parsing functionality. The only thing that must be provided by the class are instance variable parsing.
Constant Summary collapse
- HTML_RAW_START =
:nodoc:
/(?=<(#{REXML::Parsers::BaseParser::UNAME_STR}|\/|!--|\?))/
Constants included from Constants
Constants::HTML_ATTRIBUTE_RE, Constants::HTML_BLOCK_ELEMENTS, Constants::HTML_COMMENT_RE, Constants::HTML_CONTENT_MODEL, Constants::HTML_CONTENT_MODEL_BLOCK, Constants::HTML_CONTENT_MODEL_RAW, Constants::HTML_CONTENT_MODEL_SPAN, Constants::HTML_DOCTYPE_RE, Constants::HTML_ELEMENTS_WITHOUT_BODY, Constants::HTML_ENTITY_RE, Constants::HTML_INSTRUCTION_RE, Constants::HTML_SPAN_ELEMENTS, Constants::HTML_TAG_CLOSE_RE, Constants::HTML_TAG_RE
Instance Method Summary collapse
-
#handle_html_start_tag ⇒ Object
Process the HTML start tag that has already be scanned/checked via @src.
-
#handle_raw_html_tag(name) ⇒ Object
Handle the raw HTML tag at the current position.
-
#parse_raw_html(el, &block) ⇒ Object
Parse raw HTML from the current source position, storing the found elements in
el
.
Instance Method Details
#handle_html_start_tag ⇒ Object
Process the HTML start tag that has already be scanned/checked via @src.
Does the common processing steps and then yields to the caller for further processing (first parameter is the created element, the second parameter is true
if the HTML element is already closed, ie. contains no body).
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# File 'lib/kramdown/parser/html.rb', line 88 def handle_html_start_tag # :yields: el, closed name = @src[1].downcase closed = !@src[4].nil? attrs = Utils::OrderedHash.new @src[2].scan(HTML_ATTRIBUTE_RE).each {|attr,sep,val| attrs[attr] = val} el = Element.new(:html_element, name, attrs, :category => :block) @tree.children << el if !closed && HTML_ELEMENTS_WITHOUT_BODY.include?(el.value) warning("The HTML tag '#{el.value}' cannot have any content - auto-closing it") closed = true end if name == 'script' || name == 'style' handle_raw_html_tag(name) yield(el, true) else yield(el, closed) end end |
#handle_raw_html_tag(name) ⇒ Object
Handle the raw HTML tag at the current position.
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# File 'lib/kramdown/parser/html.rb', line 110 def handle_raw_html_tag(name) curpos = @src.pos if @src.scan_until(/(?=<\/#{name}\s*>)/mi) add_text(extract_string(curpos...@src.pos, @src), @tree.children.last, :raw) @src.scan(HTML_TAG_CLOSE_RE) else add_text(@src.rest, @tree.children.last, :raw) @src.terminate warning("Found no end tag for '#{name}' - auto-closing it") end end |
#parse_raw_html(el, &block) ⇒ Object
Parse raw HTML from the current source position, storing the found elements in el
. Parsing continues until one of the following criteria are fulfilled:
-
The end of the document is reached.
-
The matching end tag for the element
el
is found (only used ifel
is an HTML element).
When an HTML start tag is found, processing is deferred to #handle_html_start_tag, providing the block given to this method.
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# File 'lib/kramdown/parser/html.rb', line 133 def parse_raw_html(el, &block) @stack.push(@tree) @tree = el done = false while !@src.eos? && !done if result = @src.scan_until(HTML_RAW_START) add_text(result, @tree, :text) if result = @src.scan(HTML_COMMENT_RE) @tree.children << Element.new(:xml_comment, result, nil, :category => :block) elsif result = @src.scan(HTML_INSTRUCTION_RE) @tree.children << Element.new(:xml_pi, result, nil, :category => :block) elsif @src.scan(HTML_TAG_RE) handle_html_start_tag(&block) elsif @src.scan(HTML_TAG_CLOSE_RE) if @tree.value == @src[1].downcase done = true else warning("Found invalidly used HTML closing tag for '#{@src[1].downcase}' - ignoring it") end else add_text(@src.getch, @tree, :text) end else add_text(@src.rest, @tree, :text) @src.terminate warning("Found no end tag for '#{@tree.value}' - auto-closing it") if @tree.type == :html_element done = true end end @tree = @stack.pop end |