mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-26 04:18:58 +08:00
165 lines
5.0 KiB
HTML
165 lines
5.0 KiB
HTML
|
<html><head>
|
||
|
|
|
||
|
|
<!-- $Id: package.html,v 1.2.2.2 2002/01/12 21:42:21 dbrownell Exp $ -->
|
||
|
|
|
||
|
|
</head><body>
|
||
|
|
|
||
|
|
<p> This package provides the core SAX APIs.
|
||
|
|
Some SAX1 APIs are deprecated to encourage integration of
|
||
|
|
namespace-awareness into designs of new applications
|
||
|
|
and into maintainance of existing infrastructure. </p>
|
||
|
|
|
||
|
|
<p>See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
|
||
|
|
for more information about SAX.</p>
|
||
|
|
|
||
|
|
|
||
|
|
<h2> SAX2 Standard Feature Flags </h2>
|
||
|
|
|
||
|
|
<p> One of the essential characteristics of SAX2 is that it added
|
||
|
|
feature flags which can be used to examine and perhaps modify
|
||
|
|
parser modes, in particular modes such as validation.
|
||
|
|
Since features are identified by (absolute) URIs, anyone
|
||
|
|
can define such features.
|
||
|
|
Currently defined standard feature URIs have the prefix
|
||
|
|
<code>http://xml.org/sax/features/</code> before an identifier such as
|
||
|
|
<code>validation</code>. Turn features on or off using
|
||
|
|
<em>setFeature</em>. Those standard identifiers are: </p>
|
||
|
|
|
||
|
|
|
||
|
|
<table border="1" cellpadding="3" cellspacing="0" width="100%">
|
||
|
|
<tr align="center" bgcolor="#ccccff">
|
||
|
|
<th>Feature ID</th>
|
||
|
|
<th>Default</th>
|
||
|
|
<th>Description</th>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>external-general-entities</td>
|
||
|
|
<td><em>unspecified</em></td>
|
||
|
|
<td> Reports whether this parser processes external
|
||
|
|
general entities; always true if validating</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>external-parameter-entities</td>
|
||
|
|
<td><em>unspecified</em></td>
|
||
|
|
<td> Reports whether this parser processes external
|
||
|
|
parameter entities; always true if validating</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>lexical-handler/parameter-entities</td>
|
||
|
|
<td><em>unspecified</em></td>
|
||
|
|
<td> true indicates that the LexicalHandler will report the
|
||
|
|
beginning and end of parameter entities
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>namespaces</td>
|
||
|
|
<td>true</td>
|
||
|
|
<td> true indicates namespace URIs and unprefixed local names
|
||
|
|
for element and attribute names will be available </td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>namespace-prefixes</td>
|
||
|
|
<td>false</td>
|
||
|
|
<td> true indicates XML 1.0 names (with prefixes) and attributes
|
||
|
|
(including <em>xmlns*</em> attributes) will be available </td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>string-interning</td>
|
||
|
|
<td><em>unspecified</em></td>
|
||
|
|
<td> true if all XML names (for elements, prefixes, attributes,
|
||
|
|
entities, notations, and local names),
|
||
|
|
as well as Namespace URIs, will have been interned
|
||
|
|
using <em>java.lang.String.intern</em>. This supports fast
|
||
|
|
testing of equality/inequality against string constants.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>validation</td>
|
||
|
|
<td><em>unspecified</em></td>
|
||
|
|
<td> controls whether the parser is reporting all validity
|
||
|
|
errors; if true, all external entities will be read. </td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
</table>
|
||
|
|
|
||
|
|
<p> Support for the default values of the
|
||
|
|
<em>namespaces</em> and <em>namespace-prefixes</em>
|
||
|
|
properties is required.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p> For default values not specified by SAX2,
|
||
|
|
each XMLReader implementation specifies its default,
|
||
|
|
or may choose not to expose the feature flag.
|
||
|
|
Unless otherwise specified here,
|
||
|
|
implementations may support changing current values
|
||
|
|
of these standard feature flags, but not while parsing.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<h2> SAX2 Standard Handler and Property IDs </h2>
|
||
|
|
|
||
|
|
<p> For parser interface characteristics that are described
|
||
|
|
as objects, a separate namespace is defined. The
|
||
|
|
objects in this namespace are again identified by URI, and
|
||
|
|
the standard property URIs have the prefix
|
||
|
|
<code>http://xml.org/sax/properties/</code> before an identifier such as
|
||
|
|
<code>lexical-handler</code> or
|
||
|
|
<code>dom-node</code>. Manage those properties using
|
||
|
|
<em>setProperty()</em>. Those identifiers are: </p>
|
||
|
|
|
||
|
|
<table border="1" cellpadding="3" cellspacing="0" width="100%">
|
||
|
|
<tr align="center" bgcolor="#ccccff">
|
||
|
|
<th>Property ID</th>
|
||
|
|
<th>Description</th>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>declaration-handler</td>
|
||
|
|
<td> Used to see most DTD declarations except those treated
|
||
|
|
as lexical ("document element name is ...") or which are
|
||
|
|
mandatory for all SAX parsers (<em>DTDHandler</em>).
|
||
|
|
The Object must implement <a href="ext/DeclHandler.html"
|
||
|
|
><em>org.xml.sax.ext.DeclHandler</em></a>.
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>dom-node</td>
|
||
|
|
<td> For "DOM Walker" style parsers, which ignore their
|
||
|
|
<em>parser.parse()</em> parameters, this is used to
|
||
|
|
specify the DOM (sub)tree being walked by the parser.
|
||
|
|
The Object must implement the
|
||
|
|
<em>org.w3c.dom.Node</em> interface.
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>lexical-handler</td>
|
||
|
|
<td> Used to see some syntax events that are essential in some
|
||
|
|
applications: comments, CDATA delimeters, selected general
|
||
|
|
entity inclusions, and the start and end of the DTD
|
||
|
|
(and declaration of document element name).
|
||
|
|
The Object must implement <a href="ext/LexicalHandler.html"
|
||
|
|
><em>org.xml.sax.ext.LexicalHandler</em></a>.
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td>xml-string</td>
|
||
|
|
<td> Readable only during a parser callback, this exposes a <b>TBS</b>
|
||
|
|
chunk of characters responsible for the current event. </td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
</table>
|
||
|
|
|
||
|
|
<p> All of these standard properties are optional;
|
||
|
|
XMLReader implementations need not support them.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
</body></html>
|