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39      <span class="refentrytitle">hash</span>
40    </h2>
41    <p>hash - Chained hash tables</p>
42    <p>This module implements the hash table support used in various places in the library. </p>
43    <p>Author(s): Bjorn Reese &lt;bjorn.reese@systematic.dk&gt; </p>
44    <div class="refsynopsisdiv">
45      <h2>Synopsis</h2>
46      <pre class="synopsis">#define <a href="#XML_CAST_FPTR">XML_CAST_FPTR</a>(fptr);
47typedef struct _xmlHashTable <a href="#xmlHashTable">xmlHashTable</a>;
48typedef <a href="libxml2-hash.html#xmlHashTable">xmlHashTable</a> * <a href="#xmlHashTablePtr">xmlHashTablePtr</a>;
49void	<a href="#xmlHashScanFull">xmlHashScanFull</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br/>					 void * data);
50void	<a href="#xmlHashScan">xmlHashScan</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br/>					 void * data);
51typedef void <a href="#xmlHashScannerFull">xmlHashScannerFull</a>		(void * payload, <br/>					 void * data, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3);
52<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	<a href="#xmlHashCreateDict">xmlHashCreateDict</a>	(int size, <br/>					 <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict);
53int	<a href="#xmlHashAddEntry">xmlHashAddEntry</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 void * userdata);
54int	<a href="#xmlHashUpdateEntry">xmlHashUpdateEntry</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 void * userdata, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
55void *	<a href="#xmlHashQLookup3">xmlHashQLookup3</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix3, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3);
56void *	<a href="#xmlHashQLookup2">xmlHashQLookup2</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2);
57void	<a href="#xmlHashScan3">xmlHashScan3</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br/>					 void * data);
58typedef void <a href="#xmlHashScanner">xmlHashScanner</a>			(void * payload, <br/>					 void * data, <br/>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
59typedef void <a href="#xmlHashDeallocator">xmlHashDeallocator</a>		(void * payload, <br/>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
60<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	<a href="#xmlHashCreate">xmlHashCreate</a>		(int size);
61void	<a href="#xmlHashFree">xmlHashFree</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
62void *	<a href="#xmlHashLookup">xmlHashLookup</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
63void *	<a href="#xmlHashQLookup">xmlHashQLookup</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
64int	<a href="#xmlHashUpdateEntry2">xmlHashUpdateEntry2</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 void * userdata, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
65int	<a href="#xmlHashRemoveEntry2">xmlHashRemoveEntry2</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
66int	<a href="#xmlHashRemoveEntry3">xmlHashRemoveEntry3</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
67<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	<a href="#xmlHashCopy">xmlHashCopy</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashCopier">xmlHashCopier</a> f);
68void	<a href="#xmlHashScanFull3">xmlHashScanFull3</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br/>					 void * data);
69int	<a href="#xmlHashUpdateEntry3">xmlHashUpdateEntry3</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 void * userdata, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
70void *	<a href="#xmlHashLookup3">xmlHashLookup3</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3);
71void *	<a href="#xmlHashLookup2">xmlHashLookup2</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2);
72int	<a href="#xmlHashRemoveEntry">xmlHashRemoveEntry</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
73typedef void * <a href="#xmlHashCopier">xmlHashCopier</a>			(void * payload, <br/>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
74int	<a href="#xmlHashAddEntry2">xmlHashAddEntry2</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 void * userdata);
75int	<a href="#xmlHashAddEntry3">xmlHashAddEntry3</a>		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 void * userdata);
76int	<a href="#xmlHashSize">xmlHashSize</a>			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table);
77</pre>
78    </div>
79    <div class="refsect1" lang="en">
80      <h2>Description</h2>
81    </div>
82    <div class="refsect1" lang="en">
83      <h2>Details</h2>
84      <div class="refsect2" lang="en">
85        <div class="refsect2" lang="en"><h3><a name="XML_CAST_FPTR">Macro </a>XML_CAST_FPTR</h3><pre class="programlisting">#define <a href="#XML_CAST_FPTR">XML_CAST_FPTR</a>(fptr);
86</pre><p>Macro to do a casting from an object pointer to a function pointer without encountering a warning from gcc #define XML_CAST_FPTR(fptr) (*(void **)(&amp;fptr)) This macro violated ISO C aliasing rules (gcc4 on s390 broke) so it is disabled now</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>fptr</tt></i>:</span></td><td>pointer to a function</td></tr></tbody></table></div>
87</div>
88        <hr/>
89        <div class="refsect2" lang="en"><h3><a name="xmlHashTable">Structure </a>xmlHashTable</h3><pre class="programlisting">struct _xmlHashTable {
90The content of this structure is not made public by the API.
91} xmlHashTable;
92</pre><p/>
93</div>
94        <hr/>
95        <div class="refsect2" lang="en"><h3><a name="xmlHashTablePtr">Typedef </a>xmlHashTablePtr</h3><pre class="programlisting"><a href="libxml2-hash.html#xmlHashTable">xmlHashTable</a> * xmlHashTablePtr;
96</pre><p/>
97</div>
98        <hr/>
99        <div class="refsect2" lang="en"><h3><a name="xmlHashCopier"/>Function type xmlHashCopier</h3><pre class="programlisting">void *	xmlHashCopier			(void * payload, <br/>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br/>
100</pre><p>Callback to copy data from a hash.</p>
101<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>payload</tt></i>:</span></td><td>the data in the hash</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name associated</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a copy of the data or NULL in case of error.</td></tr></tbody></table></div></div>
102        <hr/>
103        <div class="refsect2" lang="en"><h3><a name="xmlHashDeallocator"/>Function type xmlHashDeallocator</h3><pre class="programlisting">void	xmlHashDeallocator		(void * payload, <br/>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br/>
104</pre><p>Callback to free data from a hash.</p>
105<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>payload</tt></i>:</span></td><td>the data in the hash</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name associated</td></tr></tbody></table></div></div>
106        <hr/>
107        <div class="refsect2" lang="en"><h3><a name="xmlHashScanner"/>Function type xmlHashScanner</h3><pre class="programlisting">void	xmlHashScanner			(void * payload, <br/>					 void * data, <br/>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br/>
108</pre><p>Callback when scanning data in a hash with the simple scanner.</p>
109<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>payload</tt></i>:</span></td><td>the data in the hash</td></tr><tr><td><span class="term"><i><tt>data</tt></i>:</span></td><td>extra scannner data</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name associated</td></tr></tbody></table></div></div>
110        <hr/>
111        <div class="refsect2" lang="en"><h3><a name="xmlHashScannerFull"/>Function type xmlHashScannerFull</h3><pre class="programlisting">void	xmlHashScannerFull		(void * payload, <br/>					 void * data, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br/>
112</pre><p>Callback when scanning data in a hash with the full scanner.</p>
113<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>payload</tt></i>:</span></td><td>the data in the hash</td></tr><tr><td><span class="term"><i><tt>data</tt></i>:</span></td><td>extra scannner data</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name associated</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>the second name associated</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>the third name associated</td></tr></tbody></table></div></div>
114        <hr/>
115        <div class="refsect2" lang="en"><h3><a name="xmlHashAddEntry"/>xmlHashAddEntry ()</h3><pre class="programlisting">int	xmlHashAddEntry			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 void * userdata)<br/>
116</pre><p>Add the @userdata to the hash @table. This can later be retrieved by using the @name. Duplicate names generate errors.</p>
117<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>userdata</tt></i>:</span></td><td>a pointer to the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 the addition succeeded and -1 in case of error.</td></tr></tbody></table></div></div>
118        <hr/>
119        <div class="refsect2" lang="en"><h3><a name="xmlHashAddEntry2"/>xmlHashAddEntry2 ()</h3><pre class="programlisting">int	xmlHashAddEntry2		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 void * userdata)<br/>
120</pre><p>Add the @userdata to the hash @table. This can later be retrieved by using the (@name, @name2) tuple. Duplicate tuples generate errors.</p>
121<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>userdata</tt></i>:</span></td><td>a pointer to the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 the addition succeeded and -1 in case of error.</td></tr></tbody></table></div></div>
122        <hr/>
123        <div class="refsect2" lang="en"><h3><a name="xmlHashAddEntry3"/>xmlHashAddEntry3 ()</h3><pre class="programlisting">int	xmlHashAddEntry3		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 void * userdata)<br/>
124</pre><p>Add the @userdata to the hash @table. This can later be retrieved by using the tuple (@name, @name2, @name3). Duplicate entries generate errors.</p>
125<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>a third name of the userdata</td></tr><tr><td><span class="term"><i><tt>userdata</tt></i>:</span></td><td>a pointer to the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 the addition succeeded and -1 in case of error.</td></tr></tbody></table></div></div>
126        <hr/>
127        <div class="refsect2" lang="en"><h3><a name="xmlHashCopy"/>xmlHashCopy ()</h3><pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	xmlHashCopy		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashCopier">xmlHashCopier</a> f)<br/>
128</pre><p>Scan the hash @table and applied @f to each value.</p>
129<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the copier function for items in the hash</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new table or NULL in case of error.</td></tr></tbody></table></div></div>
130        <hr/>
131        <div class="refsect2" lang="en"><h3><a name="xmlHashCreate"/>xmlHashCreate ()</h3><pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	xmlHashCreate		(int size)<br/>
132</pre><p>Create a new xmlHashTablePtr.</p>
133<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>the size of the hash table</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the newly created object, or NULL if an error occured.</td></tr></tbody></table></div></div>
134        <hr/>
135        <div class="refsect2" lang="en"><h3><a name="xmlHashCreateDict"/>xmlHashCreateDict ()</h3><pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	xmlHashCreateDict	(int size, <br/>					 <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict)<br/>
136</pre><p>Create a new <a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> which will use @dict as the internal dictionary</p>
137<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>the size of the hash table</td></tr><tr><td><span class="term"><i><tt>dict</tt></i>:</span></td><td>a dictionary to use for the hash</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the newly created object, or NULL if an error occured.</td></tr></tbody></table></div></div>
138        <hr/>
139        <div class="refsect2" lang="en"><h3><a name="xmlHashFree"/>xmlHashFree ()</h3><pre class="programlisting">void	xmlHashFree			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br/>
140</pre><p>Free the hash @table and its contents. The userdata is deallocated with @f if provided.</p>
141<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the deallocator function for items in the hash</td></tr></tbody></table></div></div>
142        <hr/>
143        <div class="refsect2" lang="en"><h3><a name="xmlHashLookup"/>xmlHashLookup ()</h3><pre class="programlisting">void *	xmlHashLookup			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br/>
144</pre><p>Find the userdata specified by the @name.</p>
145<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the pointer to the userdata</td></tr></tbody></table></div></div>
146        <hr/>
147        <div class="refsect2" lang="en"><h3><a name="xmlHashLookup2"/>xmlHashLookup2 ()</h3><pre class="programlisting">void *	xmlHashLookup2			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2)<br/>
148</pre><p>Find the userdata specified by the (@name, @name2) tuple.</p>
149<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the pointer to the userdata</td></tr></tbody></table></div></div>
150        <hr/>
151        <div class="refsect2" lang="en"><h3><a name="xmlHashLookup3"/>xmlHashLookup3 ()</h3><pre class="programlisting">void *	xmlHashLookup3			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br/>
152</pre><p>Find the userdata specified by the (@name, @name2, @name3) tuple.</p>
153<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>a third name of the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the a pointer to the userdata</td></tr></tbody></table></div></div>
154        <hr/>
155        <div class="refsect2" lang="en"><h3><a name="xmlHashQLookup"/>xmlHashQLookup ()</h3><pre class="programlisting">void *	xmlHashQLookup			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br/>
156</pre><p>Find the userdata specified by the QName @prefix:@name/@name.</p>
157<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>prefix</tt></i>:</span></td><td>the prefix of the userdata</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the pointer to the userdata</td></tr></tbody></table></div></div>
158        <hr/>
159        <div class="refsect2" lang="en"><h3><a name="xmlHashQLookup2"/>xmlHashQLookup2 ()</h3><pre class="programlisting">void *	xmlHashQLookup2			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2)<br/>
160</pre><p>Find the userdata specified by the QNames tuple</p>
161<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>prefix</tt></i>:</span></td><td>the prefix of the userdata</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>prefix2</tt></i>:</span></td><td>the second prefix of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the pointer to the userdata</td></tr></tbody></table></div></div>
162        <hr/>
163        <div class="refsect2" lang="en"><h3><a name="xmlHashQLookup3"/>xmlHashQLookup3 ()</h3><pre class="programlisting">void *	xmlHashQLookup3			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix3, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br/>
164</pre><p>Find the userdata specified by the (@name, @name2, @name3) tuple.</p>
165<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>prefix</tt></i>:</span></td><td>the prefix of the userdata</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>prefix2</tt></i>:</span></td><td>the second prefix of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>prefix3</tt></i>:</span></td><td>the third prefix of the userdata</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>a third name of the userdata</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the a pointer to the userdata</td></tr></tbody></table></div></div>
166        <hr/>
167        <div class="refsect2" lang="en"><h3><a name="xmlHashRemoveEntry"/>xmlHashRemoveEntry ()</h3><pre class="programlisting">int	xmlHashRemoveEntry		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br/>
168</pre><p>Find the userdata specified by the @name and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p>
169<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the deallocator function for removed item (if any)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 if the removal succeeded and -1 in case of error or not found.</td></tr></tbody></table></div></div>
170        <hr/>
171        <div class="refsect2" lang="en"><h3><a name="xmlHashRemoveEntry2"/>xmlHashRemoveEntry2 ()</h3><pre class="programlisting">int	xmlHashRemoveEntry2		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br/>
172</pre><p>Find the userdata specified by the (@name, @name2) tuple and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p>
173<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the deallocator function for removed item (if any)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 if the removal succeeded and -1 in case of error or not found.</td></tr></tbody></table></div></div>
174        <hr/>
175        <div class="refsect2" lang="en"><h3><a name="xmlHashRemoveEntry3"/>xmlHashRemoveEntry3 ()</h3><pre class="programlisting">int	xmlHashRemoveEntry3		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br/>
176</pre><p>Find the userdata specified by the (@name, @name2, @name3) tuple and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p>
177<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>a third name of the userdata</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the deallocator function for removed item (if any)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 if the removal succeeded and -1 in case of error or not found.</td></tr></tbody></table></div></div>
178        <hr/>
179        <div class="refsect2" lang="en"><h3><a name="xmlHashScan"/>xmlHashScan ()</h3><pre class="programlisting">void	xmlHashScan			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br/>					 void * data)<br/>
180</pre><p>Scan the hash @table and applied @f to each value.</p>
181<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the scanner function for items in the hash</td></tr><tr><td><span class="term"><i><tt>data</tt></i>:</span></td><td>extra data passed to f</td></tr></tbody></table></div></div>
182        <hr/>
183        <div class="refsect2" lang="en"><h3><a name="xmlHashScan3"/>xmlHashScan3 ()</h3><pre class="programlisting">void	xmlHashScan3			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br/>					 void * data)<br/>
184</pre><p>Scan the hash @table and applied @f to each value matching (@name, @name2, @name3) tuple. If one of the names is null, the comparison is considered to match.</p>
185<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata or NULL</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata or NULL</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>a third name of the userdata or NULL</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the scanner function for items in the hash</td></tr><tr><td><span class="term"><i><tt>data</tt></i>:</span></td><td>extra data passed to f</td></tr></tbody></table></div></div>
186        <hr/>
187        <div class="refsect2" lang="en"><h3><a name="xmlHashScanFull"/>xmlHashScanFull ()</h3><pre class="programlisting">void	xmlHashScanFull			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br/>					 void * data)<br/>
188</pre><p>Scan the hash @table and applied @f to each value.</p>
189<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the scanner function for items in the hash</td></tr><tr><td><span class="term"><i><tt>data</tt></i>:</span></td><td>extra data passed to f</td></tr></tbody></table></div></div>
190        <hr/>
191        <div class="refsect2" lang="en"><h3><a name="xmlHashScanFull3"/>xmlHashScanFull3 ()</h3><pre class="programlisting">void	xmlHashScanFull3		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br/>					 void * data)<br/>
192</pre><p>Scan the hash @table and applied @f to each value matching (@name, @name2, @name3) tuple. If one of the names is null, the comparison is considered to match.</p>
193<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata or NULL</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata or NULL</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>a third name of the userdata or NULL</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the scanner function for items in the hash</td></tr><tr><td><span class="term"><i><tt>data</tt></i>:</span></td><td>extra data passed to f</td></tr></tbody></table></div></div>
194        <hr/>
195        <div class="refsect2" lang="en"><h3><a name="xmlHashSize"/>xmlHashSize ()</h3><pre class="programlisting">int	xmlHashSize			(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table)<br/>
196</pre><p>Query the number of elements installed in the hash @table.</p>
197<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of elements in the hash table or -1 in case of error</td></tr></tbody></table></div></div>
198        <hr/>
199        <div class="refsect2" lang="en"><h3><a name="xmlHashUpdateEntry"/>xmlHashUpdateEntry ()</h3><pre class="programlisting">int	xmlHashUpdateEntry		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 void * userdata, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br/>
200</pre><p>Add the @userdata to the hash @table. This can later be retrieved by using the @name. Existing entry for this @name will be removed and freed with @f if found.</p>
201<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>userdata</tt></i>:</span></td><td>a pointer to the userdata</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the deallocator function for replaced item (if any)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 the addition succeeded and -1 in case of error.</td></tr></tbody></table></div></div>
202        <hr/>
203        <div class="refsect2" lang="en"><h3><a name="xmlHashUpdateEntry2"/>xmlHashUpdateEntry2 ()</h3><pre class="programlisting">int	xmlHashUpdateEntry2		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 void * userdata, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br/>
204</pre><p>Add the @userdata to the hash @table. This can later be retrieved by using the (@name, @name2) tuple. Existing entry for this tuple will be removed and freed with @f if found.</p>
205<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>userdata</tt></i>:</span></td><td>a pointer to the userdata</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the deallocator function for replaced item (if any)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 the addition succeeded and -1 in case of error.</td></tr></tbody></table></div></div>
206        <hr/>
207        <div class="refsect2" lang="en"><h3><a name="xmlHashUpdateEntry3"/>xmlHashUpdateEntry3 ()</h3><pre class="programlisting">int	xmlHashUpdateEntry3		(<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br/>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br/>					 void * userdata, <br/>					 <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br/>
208</pre><p>Add the @userdata to the hash @table. This can later be retrieved by using the tuple (@name, @name2, @name3). Existing entry for this tuple will be removed and freed with @f if found.</p>
209<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>table</tt></i>:</span></td><td>the hash table</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the name of the userdata</td></tr><tr><td><span class="term"><i><tt>name2</tt></i>:</span></td><td>a second name of the userdata</td></tr><tr><td><span class="term"><i><tt>name3</tt></i>:</span></td><td>a third name of the userdata</td></tr><tr><td><span class="term"><i><tt>userdata</tt></i>:</span></td><td>a pointer to the userdata</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the deallocator function for replaced item (if any)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 the addition succeeded and -1 in case of error.</td></tr></tbody></table></div></div>
210        <hr/>
211      </div>
212    </div>
213  </body>
214</html>
215