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htmlpurifier/docs/dev-code-quality.html
2006-11-23 22:34:41 +00:00

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="description" content="Discusses code quality issues and places that need to be refactored in HTML Purifier." />
<link rel="stylesheet" type="text/css" href="./style.css" />
<title>Code Quality Issues - HTML Purifier</title>
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<h1>Code Quality Issues</h1>
<div id="filing">Filed under Development</div>
<div id="index">Return to the <a href="index.html">index</a>.</div>
<p>Okay, face it. Programmers can get lazy, cut corners, or make mistakes. They
also can do quick prototypes, and then forget to rewrite them later. Well,
while I can't list mistakes in here, I can list prototype-like segments
of code that should be aggressively refactored. This does not list
optimization issues, that needs to be done after intense profiling.</p>
<pre>
docs/examples/demo.php - ad hoc HTML/PHP soup to the extreme
AttrDef
Class - doesn't support Unicode characters (fringe); uses regular
expressions
Lang - code duplication; premature optimization
Length - easily mistaken for CSSLength
URI - multiple regular expressions; missing validation for parts (?)
CSS - parser doesn't accept advanced CSS (fringe)
Number - constructor interface inconsistent with Integer
ConfigSchema - redefinition is a mess
Strategy
FixNesting - cannot bubble nodes out of structures, duplicated checks
for special-case parent node
MakeWellFormed - insufficient automatic closing definitions (check HTML
spec for optional end tags, also, closing based on type (block/inline)
might be efficient).
RemoveForeignElements - should be run in parallel with MakeWellFormed
URIScheme - needs to have callable generic checks
mailto - doesn't validate emails, doesn't validate querystring
news - doesn't validate opaque path
nntp - doesn't constrain path
</pre>
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