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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__
#include <libxml/xmlversion.h>
#include <libxml/dict.h>
#include <libxml/xmlstring.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* The hash table.
*/
typedef struct _xmlHashTable xmlHashTable;
typedef xmlHashTable *xmlHashTablePtr;
/*
* 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, const 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, const xmlChar *name);
/**
* xmlHashScanner:
* @payload: the data in the hash
* @data: extra scanner data
* @name: the name associated
*
* Callback when scanning data in a hash with the simple scanner.
*/
typedef void (*xmlHashScanner)(void *payload, void *data, const xmlChar *name);
/**
* xmlHashScannerFull:
* @payload: the data in the hash
* @data: extra scanner 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
xmlHashCreate (int size);
XMLPUBFUN xmlHashTablePtr
xmlHashCreateDict (int size,
xmlDictPtr dict);
XMLPUBFUN void
xmlHashFree (xmlHashTablePtr hash,
xmlHashDeallocator dealloc);
XMLPUBFUN void
xmlHashDefaultDeallocator(void *entry,
const xmlChar *name);
/*
* Add a new entry to the hash table.
*/
XMLPUBFUN int
xmlHashAdd (xmlHashTablePtr hash,
const xmlChar *name,
void *userdata);
XMLPUBFUN int
xmlHashAddEntry (xmlHashTablePtr hash,
const xmlChar *name,
void *userdata);
XMLPUBFUN int
xmlHashUpdateEntry (xmlHashTablePtr hash,
const xmlChar *name,
void *userdata,
xmlHashDeallocator dealloc);
XMLPUBFUN int
xmlHashAdd2 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
void *userdata);
XMLPUBFUN int
xmlHashAddEntry2 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
void *userdata);
XMLPUBFUN int
xmlHashUpdateEntry2 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
void *userdata,
xmlHashDeallocator dealloc);
XMLPUBFUN int
xmlHashAdd3 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
const xmlChar *name3,
void *userdata);
XMLPUBFUN int
xmlHashAddEntry3 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
const xmlChar *name3,
void *userdata);
XMLPUBFUN int
xmlHashUpdateEntry3 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
const xmlChar *name3,
void *userdata,
xmlHashDeallocator dealloc);
/*
* Remove an entry from the hash table.
*/
XMLPUBFUN int
xmlHashRemoveEntry (xmlHashTablePtr hash,
const xmlChar *name,
xmlHashDeallocator dealloc);
XMLPUBFUN int
xmlHashRemoveEntry2 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
xmlHashDeallocator dealloc);
XMLPUBFUN int
xmlHashRemoveEntry3 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
const xmlChar *name3,
xmlHashDeallocator dealloc);
/*
* Retrieve the payload.
*/
XMLPUBFUN void *
xmlHashLookup (xmlHashTablePtr hash,
const xmlChar *name);
XMLPUBFUN void *
xmlHashLookup2 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2);
XMLPUBFUN void *
xmlHashLookup3 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
const xmlChar *name3);
XMLPUBFUN void *
xmlHashQLookup (xmlHashTablePtr hash,
const xmlChar *prefix,
const xmlChar *name);
XMLPUBFUN void *
xmlHashQLookup2 (xmlHashTablePtr hash,
const xmlChar *prefix,
const xmlChar *name,
const xmlChar *prefix2,
const xmlChar *name2);
XMLPUBFUN void *
xmlHashQLookup3 (xmlHashTablePtr hash,
const xmlChar *prefix,
const xmlChar *name,
const xmlChar *prefix2,
const xmlChar *name2,
const xmlChar *prefix3,
const xmlChar *name3);
/*
* Helpers.
*/
XMLPUBFUN xmlHashTablePtr
xmlHashCopySafe (xmlHashTablePtr hash,
xmlHashCopier copy,
xmlHashDeallocator dealloc);
XMLPUBFUN xmlHashTablePtr
xmlHashCopy (xmlHashTablePtr hash,
xmlHashCopier copy);
XMLPUBFUN int
xmlHashSize (xmlHashTablePtr hash);
XMLPUBFUN void
xmlHashScan (xmlHashTablePtr hash,
xmlHashScanner scan,
void *data);
XMLPUBFUN void
xmlHashScan3 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
const xmlChar *name3,
xmlHashScanner scan,
void *data);
XMLPUBFUN void
xmlHashScanFull (xmlHashTablePtr hash,
xmlHashScannerFull scan,
void *data);
XMLPUBFUN void
xmlHashScanFull3 (xmlHashTablePtr hash,
const xmlChar *name,
const xmlChar *name2,
const xmlChar *name3,
xmlHashScannerFull scan,
void *data);
#ifdef __cplusplus
}
#endif
#endif /* ! __XML_HASH_H__ */