80 lines
2.7 KiB
Text
80 lines
2.7 KiB
Text
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Configuration Backwards-Compatibility Breaks
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In version 4.0.0, the configuration subsystem (composed of the outwards
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facing Config class, as well as the ConfigSchema and ConfigSchema_Interchange
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subsystems), was significantly revamped to make use of property lists.
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While most of the changes are internal, some internal APIs were changed for the
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sake of clarity. HTMLPurifier_Config was kept completely backwards compatible,
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although some of the functions were retrofitted with an unambiguous alternate
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syntax. Both of these changes are discussed in this document.
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1. Outwards Facing Changes
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--------------------------------------------------------------------------------
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The HTMLPurifier_Config class now takes an alternate syntax. The general rule
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is:
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If you passed $namespace, $directive, pass "$namespace.$directive"
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instead.
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An example:
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$config->set('HTML', 'Allowed', 'p');
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becomes:
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$config->set('HTML.Allowed', 'p');
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New configuration options may have more than one namespace, they might
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look something like %Filter.YouTube.Blacklist. While you could technically
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set it with ('HTML', 'YouTube.Blacklist'), the logical extension
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('HTML', 'YouTube', 'Blacklist') does not work.
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The old API will still work, but will emit E_USER_NOTICEs.
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2. Internal API Changes
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--------------------------------------------------------------------------------
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Some overarching notes: we've completely eliminated the notion of namespace;
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it's now an informal construct for organizing related configuration directives.
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Also, the validation routines for keys (formerly "$namespace.$directive")
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have been completely relaxed. I don't think it really should be necessary.
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2.1 HTMLPurifier_ConfigSchema
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First off, if you're interfacing with this class, you really shouldn't.
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HTMLPurifier_ConfigSchema_Builder_ConfigSchema is really the only class that
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should ever be creating HTMLPurifier_ConfigSchema, and HTMLPurifier_Config the
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only class that should be reading it.
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All namespace related methods were removed; they are completely unnecessary
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now. Any $namespace, $name arguments must be replaced with $key (where
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$key == "$namespace.$name"), including for addAlias().
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The $info and $defaults member variables are no longer indexed as
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[$namespace][$name]; they are now indexed as ["$namespace.$name"].
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All deprecated methods were finally removed, after having yelled at you as
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an E_USER_NOTICE for a while now.
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2.2 HTMLPurifier_ConfigSchema_Interchange
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Member variable $namespaces was removed.
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2.3 HTMLPurifier_ConfigSchema_Interchange_Id
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Member variable $namespace and $directive removed; member variable $key added.
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Any method that took $namespace, $directive now takes $key.
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2.4 HTMLPurifier_ConfigSchema_Interchange_Namespace
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Removed.
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vim: et sw=4 sts=4
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