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Interfaces, Classes, Traits and Enums

Horde_Text_Filter_Base: Horde_Text_Filter_Base:: is the parent class for defining a text filter.
Horde_Text_Filter_Bbcode: The Horde_Text_Filter_Bbcode:: class finds bbcode-style markup (see below) in a block of text and turns it into HTML.
Horde_Text_Filter_Cleanhtml: This filter attempts to sanitize HTML by cleaning up malformed HTML tags.
Horde_Text_Filter_Dimsignature: Displays message signatures marked by a '-- ' in the style of the CSS class "signature".
Horde_Text_Filter_Emails: The Horde_Text_Filter_Emails:: class finds email addresses in a block of text and turns them into links.
Horde_Text_Filter_Environment: Replaces occurences of %VAR% with VAR, if VAR exists in the webserver's environment. Ignores all text after a '#' character (shell-style comments).
Horde_Text_Filter_Exception: Exception handler for the Horde_Text_Filter package.
Horde_Text_Filter_Highlightquotes: Highlights quoted messages with different colors for the different quoting levels.
Horde_Text_Filter_Html2text: Takes HTML and converts it to formatted, plain text.
Horde_Text_Filter_JavascriptMinify: This filter cleans up javascript output by running it through an optimizer/compressor.
Horde_Text_Filter_Linkurls: The Horde_Text_Filter_Linkurls:: class turns all URLs in the text into hyperlinks. The regex used is adapted from John Gruber's: http://daringfireball.net/2010/07/improved_regex_for_matching_urls
Horde_Text_Filter_Msoffice: Takes HTML and removes any MS Office formatting quirks.
Horde_Text_Filter_Simplemarkup: Highlights simple markup as used in emails or usenet postings.
Horde_Text_Filter_Space2html: The space2html filter converts horizontal whitespace to HTML code.
Horde_Text_Filter_Tabs2spaces: The Horde_Text_Filter_Tabs2spaces:: converts tabs into spaces.
Horde_Text_Filter_Text2html: Turn text into HTML with varying levels of parsing. For no html whatsoever, use htmlspecialchars() instead.
Horde_Text_Filter_Translation: Horde_Text_Filter_Translation is the translation wrapper class for Horde_Text_Filter.
Horde_Text_Filter_Words: Filters the given text based on the words found in a word list.
Horde_Text_Filter_Xss: This filter attempts to make HTML safe for viewing. IT IS NOT PERFECT. If you enable HTML viewing, you are opening a security hole.
Horde_Text_Filter: Horde_Text_Filter is a parent class for defining stackable text filters.