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htmlpurifier/TODO

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TODO List
1.2 release
- Make URI validation routines tighter (especially mailto)
- More extensive URI filtering schemes
- Allow for background-image and list-style-image (see above)
- Distinguish between different types of URIs, for instance, a mailto URI
in IMG SRC is nonsensical
- Error logging for filtering/cleanup procedures
1.3 release
- Add various "levels" of cleaning
- Related: Allow strict (X)HTML
- More fine-grained control over escaping behavior
- Silently drop content inbetween SCRIPT tags (can be generalized to allow
specification of elements that, when detected as foreign, trigger removal
of children, although unbalanced tags could wreck havoc (or at least
delete the rest of the document)).
1.4 release
- Additional support for poorly written HTML
- Implement all non-essential attribute transforms
- Microsoft Word HTML cleaning (i.e. MsoNormal)
2.0 release
- Formatters for plaintext
- Auto-paragraphing (be sure to leverage fact that we know when things
shouldn't be paragraphed, such as lists and tables).
- Linkify URLs
- Smileys
3.0 release
- Extended HTML capabilities based on namespacing and tag transforms
- Hooks for adding custom processors to custom namespaced tags and
attributes, offer default implementation
- Lots of documentation and samples
Ongoing
- Lots of profiling, make it faster!
- Plugins for major CMSes (very tricky issue)
Unknown release (on a scratch-an-itch basis)
- Fixes for Firefox's inability to handle COL alignment props (Bug 915)
- Automatically add non-breaking spaces to empty table cells when
empty-cells:show is applied to have compatibility with Internet Explorer
- Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
Also, enable disabling of directionality
Encoding workarounds
- Non-lossy dumb alternate character encoding transformations, achieved by
numerically encoding all non-ASCII characters
- Semi-lossy dumb alternate character encoding transformations, achieved by
encoding all characters that have string entity equivalents
Requested
- Native content compression, whitespace stripping (don't rely on Tidy, make
sure we don't remove from <pre> or related tags)
- Win32 Phalanger C# binaries (?)
- Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
1. Analyzing which tags to remove duplicants
2. Ensure attributes are merged into the parent tag
3. Extend the tag exclusion system to specify whether or not the
contents should be dropped or not (currently, there's code that could do
something like this if it didn't drop the inner text too.)
Wontfix
- Non-lossy smart alternate character encoding transformations (unless
patch provided)
- Pretty-printing HTML, users can use Tidy on the output on entire page