YuNetsurf v3.0.0 for D6-XE10

YuNetSurf is a HTML5 parser and tree builder with CSS3 tokeniser, parser, and selection engine for Delphi (Embarcadero / CodeGear / Borland).

HTML Parser and Tree Builder

• Parse HTML, good and bad.
• HTML5 tokeniser with SAX-style events.
• Flexible tree builder API for custom DOM implementations.
• Readily provided HTML5 parser classes convert HTML documents into DOM trees:
  • Simple DOM tree: Fast and efficient.
  • LibXml2 tree: Fully compatible with LibXml2 functions, including XPATH and LibXslt transformation.
  • XDOM tree: Feasability study limited by XDOM restrictions.
• Fast, efficient, and low memory usage.

CSS Parser and Selection Engine

• Parse CSS, good and bad.
• Apply CSS rules to DOM nodes:
  • CSS2 and CSS3 selectors.
  • Handle most CSS2 as well as some CSS3 properties.
• Selector engines readily provided for
  • Simple DOM tree.
  • LibXml2 tree.
• Flexible selection API to apply CSS to custom DOM implementations.
• Fast, efficient, and low memory usage.

Usage Scenarios

• Extract information from HTML documents:
  • Locate HTML elements based on their tag names, attribute names or CSS properties.
  • Extract values of attributes from elements.
  • Find the n-th sibling or child element parsed data.
• Cleanup, change, or extend HTML documents:
  • Add, change, or remove attributes of elements.
  • Manipulate the inner content of elements.
  • Wrap element content inside new elements.
• Use CSS to detect hidden, highlighted, or invisible HTML fragments.
• Apply custom CSS as HTML element filter or locator.
• Download HTML documents with linked CSS URL resources.
  
  
  
  

  YuNetsurf 3.0.0 – 25 Mar 2016

  Incompatibility Change:

  Optimize the way to handle CSS presentational hints: Previously, the CSS selection engine iterated over all properties not either in a UA stylesheet or a user stylesheet with !important set. It asked the client if there were any presentational hints for that node, once for each property. This triggered up to N_PROPERTIES * N_NODES calls to the client.

  The new API asks the client to supply a list of all the presentational hints that apply to node, which is 0 for most nodes. This triggers at most N_NODES calls to the client. css_hint has been changed to include the property which the hint applies to.

  Wrapper classes have been adjusted as well:

  • TYuSimpleCss.OnNodePresentationalHint
  • TYuLibXml2Css.OnNodePresentationalHint

  Because of this incompatible API change, the YuNetSurf major version incremented to 3.

  New Functions:

  • Add lwc_string_tolower API.