+/*
+ * Copyright (c) 1987-2011 by the citadel.org team
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
typedef struct Payload Payload;
/**
+ * @defgroup HashList Hashlist Key Value list implementation;
+ * Hashlist is a simple implementation of key value pairs. It doesn't implement collision handling.
+ * the Hashingalgorythm is pluggeable on creation.
+ * items are added with a functionpointer destructs them; that way complex structures can be added.
+ * if no pointer is given, simply free is used. Use @ref reference_free_handler if you don't want us to free you rmemory.
+ */
+
+/**
+ * @defgroup HashListData Datastructures used for the internals of HashList
+ * @ingroup HashList
+ */
+
+/**
+ * @defgroup HashListDebug Hashlist debugging functions
+ * @ingroup HashList
+ */
+
+/**
+ * @defgroup HashListPrivate Hashlist internal functions
+ * @ingroup HashList
+ */
+
+/**
+ * @defgroup HashListSort Hashlist sorting functions
+ * @ingroup HashList
+ */
+
+/**
+ * @defgroup HashListAccess Hashlist functions to access / put / delete items in(to) the list
+ * @ingroup HashList
+ */
+
+/**
+ * @defgroup HashListAlgorithm functions to condense Key to an integer.
+ * @ingroup HashList
+ */
+
+/**
+ * @defgroup HashListMset MSet is sort of a derived hashlist, its special for treating Messagesets as Citadel uses them to store access rangesx
+ * @ingroup HashList
+ */
+
+/**
+ * @ingroup HashListData
* @brief Hash Payload storage Structure; filled in linear.
*/
struct Payload {
/**
+ * @ingroup HashListData
* @brief Hash key element; sorted by key
*/
struct HashKey {
};
/**
+ * @ingroup HashListData
* @brief Hash structure; holds arrays of Hashkey and Payload.
*/
struct HashList {
};
/**
+ * @ingroup HashListData
* @brief Anonymous Hash Iterator Object. used for traversing the whole array from outside
*/
struct HashPos {
/**
+ * @ingroup HashListDebug
* @brief Iterate over the hash and call PrintEntry.
* @param Hash your Hashlist structure
* @param Trans is called so you could for example print 'A:' if the next entries are like that.
* Must be aware to receive NULL in both pointers.
* @param PrintEntry print entry one by one
- * \returns the number of items printed
+ * @return the number of items printed
*/
int PrintHash(HashList *Hash, TransitionFunc Trans, PrintHashDataFunc PrintEntry)
{
/**
+ * @ingroup HashListDebug
* @brief verify the contents of a hash list; here for debugging purposes.
* @param Hash your Hashlist structure
* @param First Functionpointer to allow you to print your payload
* @param Second Functionpointer to allow you to print your payload
- * \returns 0
+ * @return 0
*/
int dbg_PrintHash(HashList *Hash, PrintHashContent First, PrintHashContent Second)
{
+#ifdef DEBUG
const char *foo;
const char *bar;
const char *bla = "";
+#endif
long key;
long i;
if (Hash->LookupTable[i] == NULL)
{
+#ifdef DEBUG
foo = "";
bar = "";
+#endif
+
key = 0;
}
else
key = Hash->LookupTable[i]->Key;
foo = Hash->LookupTable[i]->HashKey;
if (First != NULL)
- bar = First(Hash->Members[Hash->LookupTable[i]->Position]->Data);
+#ifdef DEBUG
+ bar =
+#endif
+ First(Hash->Members[Hash->LookupTable[i]->Position]->Data);
+#ifdef DEBUG
else
bar = "";
+#endif
+
if (Second != NULL)
- bla = Second(Hash->Members[Hash->LookupTable[i]->Position]->Data);
+#ifdef DEBUG
+ bla =
+#endif
+ Second(Hash->Members[Hash->LookupTable[i]->Position]->Data);
+#ifdef DEBUG
+
else
bla = "";
+#endif
+
}
#ifdef DEBUG
printf (" ---- Hashkey[%ld][%ld]: '%s' Value: '%s' ; %s\n", i, key, foo, bar, bla);
}
+int TestValidateHash(HashList *TestHash)
+{
+ long i;
+
+ if (TestHash->nMembersUsed != TestHash->nLookupTableItems)
+ return 1;
+
+ if (TestHash->nMembersUsed > TestHash->MemberSize)
+ return 2;
+
+ for (i=0; i < TestHash->nMembersUsed; i++)
+ {
+
+ if (TestHash->LookupTable[i]->Position > TestHash->nMembersUsed)
+ return 3;
+
+ if (TestHash->Members[TestHash->LookupTable[i]->Position] == NULL)
+ return 4;
+ if (TestHash->Members[TestHash->LookupTable[i]->Position]->Data == NULL)
+ return 5;
+ }
+ return 0;
+}
+
/**
+ * @ingroup HashListAccess
* @brief instanciate a new hashlist
- * \returns the newly allocated list.
+ * @return the newly allocated list.
*/
HashList *NewHash(int Uniq, HashFunc F)
{
/**
+ * @ingroup HashListPrivate
* @brief private destructor for one hash element.
* Crashing? go one frame up and do 'print *FreeMe->LookupTable[i]'
* @param Data an element to free using the user provided destructor, or just plain free
}
/**
+ * @ingroup HashListPrivate
* @brief Destructor for nested hashes
*/
void HDeleteHash(void *vHash)
}
/**
+ * @ingroup HashListAccess
* @brief flush the members of a hashlist
* Crashing? do 'print *FreeMe->LookupTable[i]'
* @param Hash Hash to destroy. Is NULL'ed so you are shure its done.
}
/**
+ * @ingroup HashListAccess
* @brief destroy a hashlist and all of its members
* Crashing? do 'print *FreeMe->LookupTable[i]'
* @param Hash Hash to destroy. Is NULL'ed so you are shure its done.
}
/**
+ * @ingroup HashListPrivate
* @brief Private function to increase the hash size.
* @param Hash the Hasharray to increase
*/
/**
+ * @ingroup HashListPrivate
* @brief private function to add a new item to / replace an existing in - the hashlist
* if the hash list is full, its re-alloced with double size.
- * \parame Hash our hashlist to manipulate
+ * @param Hash our hashlist to manipulate
* @param HashPos where should we insert / replace?
* @param HashKeyStr the Hash-String
* @param HKLen length of HashKeyStr
}
/**
+ * @ingroup HashListSort
* @brief if the user has tainted the hash, but wants to insert / search items by their key
* we need to search linear through the array. You have been warned that this will take more time!
* @param Hash Our Hash to manipulate
* @param HashBinKey the Hash-Number to lookup.
- * \returns the position (most closely) matching HashBinKey (-> Caller needs to compare! )
+ * @return the position (most closely) matching HashBinKey (-> Caller needs to compare! )
*/
static long FindInTaintedHash(HashList *Hash, long HashBinKey)
{
}
/**
+ * @ingroup HashListPrivate
* @brief Private function to lookup the Item / the closest position to put it in
* @param Hash Our Hash to manipulate
* @param HashBinKey the Hash-Number to lookup.
- * \returns the position (most closely) matching HashBinKey (-> Caller needs to compare! )
+ * @return the position (most closely) matching HashBinKey (-> Caller needs to compare! )
*/
static long FindInHash(HashList *Hash, long HashBinKey)
{
/**
+ * @ingroup HashListAlgorithm
* @brief another hashing algorithm; treat it as just a pointer to int.
* @param str Our pointer to the int value
* @param len the length of the data pointed to; needs to be sizeof int, else we won't use it!
- * \returns the calculated hash value
+ * @return the calculated hash value
*/
long Flathash(const char *str, long len)
{
}
/**
+ * @ingroup HashListAlgorithm
* @brief another hashing algorithm; treat it as just a pointer to long.
* @param str Our pointer to the long value
* @param len the length of the data pointed to; needs to be sizeof long, else we won't use it!
- * \returns the calculated hash value
+ * @return the calculated hash value
*/
long lFlathash(const char *str, long len)
{
}
/**
+ * @ingroup HashListPrivate
* @brief private abstract wrapper around the hashing algorithm
* @param HKey the hash string
* @param HKLen length of HKey
- * \returns the calculated hash value
+ * @return the calculated hash value
*/
inline static long CalcHashKey (HashList *Hash, const char *HKey, long HKLen)
{
/**
+ * @ingroup HashListAccess
* @brief Add a new / Replace an existing item in the Hash
- * @param HashList the list to manipulate
+ * @param Hash the list to manipulate
* @param HKey the hash-string to store Data under
- * @param HKeyLen Length of HKey
+ * @param HKLen Length of HKey
* @param Data the payload you want to associate with HKey
* @param DeleteIt if not free() should be used to delete Data set to NULL, else DeleteIt is used.
*/
/** oh, we're brand new... */
if (Hash->LookupTable[HashAt] == NULL) {
InsertHashItem(Hash, HashAt, HashBinKey, HKey, HKLen, Data, DeleteIt);
- }/** Insert After? */
+ }/** Insert Before? */
else if (Hash->LookupTable[HashAt]->Key > HashBinKey) {
InsertHashItem(Hash, HashAt, HashBinKey, HKey, HKLen, Data, DeleteIt);
- }/** Insert before? */
+ }/** Insert After? */
else if (Hash->LookupTable[HashAt]->Key < HashBinKey) {
InsertHashItem(Hash, HashAt + 1, HashBinKey, HKey, HKLen, Data, DeleteIt);
}
}
/**
+ * @ingroup HashListAccess
* @brief Lookup the Data associated with HKey
* @param Hash the Hashlist to search in
* @param HKey the hashkey to look up
* @param HKLen length of HKey
* @param Data returns the Data associated with HKey
- * \returns 0 if not found, 1 if.
+ * @return 0 if not found, 1 if.
*/
int GetHash(HashList *Hash, const char *HKey, long HKLen, void **Data)
{
}
/**
+ * @ingroup HashListAccess
* @brief get the Keys present in this hash, simila to array_keys() in PHP
* Attention: List remains to Hash! don't modify or free it!
* @param Hash Your Hashlist to extract the keys from
}
/**
+ * @ingroup HashListAccess
* @brief creates a hash-linear iterator object
* @param Hash the list we reference
- * @param in which step width should we iterate?
+ * @param StepWidth in which step width should we iterate?
* If negative, the last position matching the
* step-raster is provided.
- * \returns the hash iterator
+ * @return the hash iterator
*/
HashPos *GetNewHashPos(HashList *Hash, int StepWidth)
{
}
/**
+ * @ingroup HashListAccess
* @brief Set iterator object to point to key. If not found, don't change iterator
* @param Hash the list we reference
* @param HKey key to search for
* @param HKLen length of key
* @param At HashPos to update
- * \returns 0 if not found
+ * @return 0 if not found
*/
int GetHashPosFromKey(HashList *Hash, const char *HKey, long HKLen, HashPos *At)
{
return 0;
}
/** GOTCHA! */
- At->Position = Hash->LookupTable[HashAt]->Position;
+ At->Position = HashAt;
return 1;
}
/**
+ * @ingroup HashListAccess
* @brief Delete from the Hash the entry at Position
* @param Hash the list we reference
* @param At the position within the Hash
- * \returns 0 if not found
+ * @return 0 if not found
*/
int DeleteEntryFromHash(HashList *Hash, HashPos *At)
{
}
/**
+ * @ingroup HashListAccess
* @brief retrieve the counter from the itteratoor
- * @param the Iterator to analyze
- * \returns the n'th hashposition we point at
+ * @param Hash which
+ * @param At the Iterator to analyze
+ * @return the n'th hashposition we point at
*/
int GetHashPosCounter(HashList *Hash, HashPos *At)
{
}
/**
+ * @ingroup HashListAccess
* @brief frees a linear hash iterator
*/
void DeleteHashPos(HashPos **DelMe)
/**
+ * @ingroup HashListAccess
* @brief Get the data located where HashPos Iterator points at, and Move HashPos one forward
* @param Hash your Hashlist to follow
* @param At the position to retrieve the Item from and move forward afterwards
* @param HKLen returns Length of Hashkey Returned
* @param HashKey returns the Hashkey corrosponding to HashPos
* @param Data returns the Data found at HashPos
- * \returns whether the item was found or not.
+ * @return whether the item was found or not.
*/
int GetNextHashPos(HashList *Hash, HashPos *At, long *HKLen, const char **HashKey, void **Data)
{
}
/**
+ * @ingroup HashListAccess
* @brief Get the data located where HashPos Iterator points at
* @param Hash your Hashlist to follow
* @param At the position retrieve the data from
* @param HKLen returns Length of Hashkey Returned
* @param HashKey returns the Hashkey corrosponding to HashPos
* @param Data returns the Data found at HashPos
- * \returns whether the item was found or not.
+ * @return whether the item was found or not.
*/
int GetHashPos(HashList *Hash, HashPos *At, long *HKLen, const char **HashKey, void **Data)
{
}
/**
+ * @ingroup HashListAccess
* @brief Move HashPos one forward
* @param Hash your Hashlist to follow
* @param At the position to move forward
- * \returns whether there is a next item or not.
+ * @return whether there is a next item or not.
*/
int NextHashPos(HashList *Hash, HashPos *At)
{
}
/**
+ * @ingroup HashListAccess
* @brief Get the data located where At points to
* note: you should prefer iterator operations instead of using me.
* @param Hash your Hashlist peek from
+ * @param At get the item in the position At.
* @param HKLen returns Length of Hashkey Returned
* @param HashKey returns the Hashkey corrosponding to HashPos
* @param Data returns the Data found at HashPos
- * \returns whether the item was found or not.
+ * @return whether the item was found or not.
*/
int GetHashAt(HashList *Hash,long At, long *HKLen, const char **HashKey, void **Data)
{
}
/**
+ * @ingroup HashListSort
* @brief Get the data located where At points to
* note: you should prefer iterator operations instead of using me.
* @param Hash your Hashlist peek from
* @param HKLen returns Length of Hashkey Returned
* @param HashKey returns the Hashkey corrosponding to HashPos
* @param Data returns the Data found at HashPos
- * \returns whether the item was found or not.
+ * @return whether the item was found or not.
*/
/*
long GetHashIDAt(HashList *Hash,long At)
/**
+ * @ingroup HashListSort
* @brief sorting function for sorting the Hash alphabeticaly by their strings
* @param Key1 first item
* @param Key2 second item
}
/**
+ * @ingroup HashListSort
* @brief sorting function for sorting the Hash alphabeticaly reverse by their strings
* @param Key1 first item
* @param Key2 second item
}
/**
+ * @ingroup HashListSort
* @brief sorting function to regain hash-sequence and revert tainted status
* @param Key1 first item
* @param Key2 second item
/**
+ * @ingroup HashListSort
* @brief sort the hash alphabeticaly by their keys.
* Caution: This taints the hashlist, so accessing it later
* will be significantly slower! You can un-taint it by SortByHashKeyStr
}
/**
+ * @ingroup HashListSort
* @brief sort the hash by their keys (so it regains untainted state).
* this will result in the sequence the hashing allgorithm produces it by default.
* @param Hash the list to sort
/**
+ * @ingroup HashListSort
* @brief gives user sort routines access to the hash payload
- * @param Searchentry to retrieve Data to
- * \returns Data belonging to HashVoid
+ * @param HashVoid to retrieve Data to
+ * @return Data belonging to HashVoid
*/
const void *GetSearchPayload(const void *HashVoid)
{
}
/**
+ * @ingroup HashListSort
* @brief sort the hash by your sort function. see the following sample.
* this will result in the sequence the hashing allgorithm produces it by default.
* @param Hash the list to sort
*/
-/*
- * Generic function to free a reference.
+/**
+ * @ingroup HashListAccess
+ * @brief Generic function to free a reference.
* since a reference actualy isn't needed to be freed, do nothing.
*/
void reference_free_handler(void *ptr)
}
-/*
+/**
+ * @ingroup HashListAlgorithm
* This exposes the hashlittle() function to consumers.
*/
int HashLittle(const void *key, size_t length) {
/**
- * \brief parses an MSet string into a list for later use
- * \param MSetList List to be read from MSetStr
- * \param MSetStr String containing the list
+ * @ingroup HashListMset
+ * @brief parses an MSet string into a list for later use
+ * @param MSetList List to be read from MSetStr
+ * @param MSetStr String containing the list
*/
int ParseMSet(MSet **MSetList, StrBuf *MSetStr)
{
}
/**
- * \brief checks whether a message is inside a mset
- * \param MSetList List to search for MsgNo
- * \param MsgNo number to search in mset
+ * @ingroup HashListMset
+ * @brief checks whether a message is inside a mset
+ * @param MSetList List to search for MsgNo
+ * @param MsgNo number to search in mset
*/
int IsInMSetList(MSet *MSetList, long MsgNo)
{
/**
- * \brief frees a mset [redirects to @ref DeleteHash
- * \param FreeMe to be free'd
+ * @ingroup HashListMset
+ * @brief frees a mset [redirects to @ref DeleteHash
+ * @param FreeMe to be free'd
*/
void DeleteMSet(MSet **FreeMe)
{
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