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+/*
+ * Summary: Chained hash tables
+ * Description: This module implements the hash table support used in
+ * various places in the library.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Bjorn Reese <bjorn.reese@systematic.dk>
+ */
+
+#ifndef __XML_HASH_H__
+#define __XML_HASH_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The hash table.
+ */
+typedef struct _xmlHashTable xmlHashTable;
+typedef xmlHashTable *xmlHashTablePtr;
+
+#ifdef __cplusplus
+}
+#endif
+
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+#include <libxml/dict.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Recent version of gcc produce a warning when a function pointer is assigned
+ * to an object pointer, or vice versa. The following macro is a dirty hack
+ * to allow suppression of the warning. If your architecture has function
+ * pointers which are a different size than a void pointer, there may be some
+ * serious trouble within the library.
+ */
+/**
+ * XML_CAST_FPTR:
+ * @fptr: pointer to a function
+ *
+ * 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 **)(&fptr))
+ * This macro violated ISO C aliasing rules (gcc4 on s390 broke)
+ * so it is disabled now
+ */
+
+#define XML_CAST_FPTR(fptr) fptr
+
+
+/*
+ * function types:
+ */
+/**
+ * xmlHashDeallocator:
+ * @payload: the data in the hash
+ * @name: the name associated
+ *
+ * Callback to free data from a hash.
+ */
+typedef void (*xmlHashDeallocator)(void *payload, xmlChar *name);
+/**
+ * xmlHashCopier:
+ * @payload: the data in the hash
+ * @name: the name associated
+ *
+ * Callback to copy data from a hash.
+ *
+ * Returns a copy of the data or NULL in case of error.
+ */
+typedef void *(*xmlHashCopier)(void *payload, xmlChar *name);
+/**
+ * xmlHashScanner:
+ * @payload: the data in the hash
+ * @data: extra scannner data
+ * @name: the name associated
+ *
+ * Callback when scanning data in a hash with the simple scanner.
+ */
+typedef void (*xmlHashScanner)(void *payload, void *data, xmlChar *name);
+/**
+ * xmlHashScannerFull:
+ * @payload: the data in the hash
+ * @data: extra scannner data
+ * @name: the name associated
+ * @name2: the second name associated
+ * @name3: the third name associated
+ *
+ * Callback when scanning data in a hash with the full scanner.
+ */
+typedef void (*xmlHashScannerFull)(void *payload, void *data,
+ const xmlChar *name, const xmlChar *name2,
+ const xmlChar *name3);
+
+/*
+ * Constructor and destructor.
+ */
+XMLPUBFUN xmlHashTablePtr XMLCALL
+ xmlHashCreate (int size);
+XMLPUBFUN xmlHashTablePtr XMLCALL
+ xmlHashCreateDict(int size,
+ xmlDictPtr dict);
+XMLPUBFUN void XMLCALL
+ xmlHashFree (xmlHashTablePtr table,
+ xmlHashDeallocator f);
+
+/*
+ * Add a new entry to the hash table.
+ */
+XMLPUBFUN int XMLCALL
+ xmlHashAddEntry (xmlHashTablePtr table,
+ const xmlChar *name,
+ void *userdata);
+XMLPUBFUN int XMLCALL
+ xmlHashUpdateEntry(xmlHashTablePtr table,
+ const xmlChar *name,
+ void *userdata,
+ xmlHashDeallocator f);
+XMLPUBFUN int XMLCALL
+ xmlHashAddEntry2(xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2,
+ void *userdata);
+XMLPUBFUN int XMLCALL
+ xmlHashUpdateEntry2(xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2,
+ void *userdata,
+ xmlHashDeallocator f);
+XMLPUBFUN int XMLCALL
+ xmlHashAddEntry3(xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2,
+ const xmlChar *name3,
+ void *userdata);
+XMLPUBFUN int XMLCALL
+ xmlHashUpdateEntry3(xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2,
+ const xmlChar *name3,
+ void *userdata,
+ xmlHashDeallocator f);
+
+/*
+ * Remove an entry from the hash table.
+ */
+XMLPUBFUN int XMLCALL
+ xmlHashRemoveEntry(xmlHashTablePtr table, const xmlChar *name,
+ xmlHashDeallocator f);
+XMLPUBFUN int XMLCALL
+ xmlHashRemoveEntry2(xmlHashTablePtr table, const xmlChar *name,
+ const xmlChar *name2, xmlHashDeallocator f);
+XMLPUBFUN int XMLCALL
+ xmlHashRemoveEntry3(xmlHashTablePtr table, const xmlChar *name,
+ const xmlChar *name2, const xmlChar *name3,
+ xmlHashDeallocator f);
+
+/*
+ * Retrieve the userdata.
+ */
+XMLPUBFUN void * XMLCALL
+ xmlHashLookup (xmlHashTablePtr table,
+ const xmlChar *name);
+XMLPUBFUN void * XMLCALL
+ xmlHashLookup2 (xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2);
+XMLPUBFUN void * XMLCALL
+ xmlHashLookup3 (xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2,
+ const xmlChar *name3);
+XMLPUBFUN void * XMLCALL
+ xmlHashQLookup (xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *prefix);
+XMLPUBFUN void * XMLCALL
+ xmlHashQLookup2 (xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *prefix,
+ const xmlChar *name2,
+ const xmlChar *prefix2);
+XMLPUBFUN void * XMLCALL
+ xmlHashQLookup3 (xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *prefix,
+ const xmlChar *name2,
+ const xmlChar *prefix2,
+ const xmlChar *name3,
+ const xmlChar *prefix3);
+
+/*
+ * Helpers.
+ */
+XMLPUBFUN xmlHashTablePtr XMLCALL
+ xmlHashCopy (xmlHashTablePtr table,
+ xmlHashCopier f);
+XMLPUBFUN int XMLCALL
+ xmlHashSize (xmlHashTablePtr table);
+XMLPUBFUN void XMLCALL
+ xmlHashScan (xmlHashTablePtr table,
+ xmlHashScanner f,
+ void *data);
+XMLPUBFUN void XMLCALL
+ xmlHashScan3 (xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2,
+ const xmlChar *name3,
+ xmlHashScanner f,
+ void *data);
+XMLPUBFUN void XMLCALL
+ xmlHashScanFull (xmlHashTablePtr table,
+ xmlHashScannerFull f,
+ void *data);
+XMLPUBFUN void XMLCALL
+ xmlHashScanFull3(xmlHashTablePtr table,
+ const xmlChar *name,
+ const xmlChar *name2,
+ const xmlChar *name3,
+ xmlHashScannerFull f,
+ void *data);
+#ifdef __cplusplus
+}
+#endif
+#endif /* ! __XML_HASH_H__ */
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