/*
* xmlDictComputeQKey:
* Calculate the hash key
*/
static unsigned long
xmlDictComputeQKey(const xmlChar *prefix, const xmlChar *name, intptr_t len)
{
unsigned long value = 0L;
size_t plen;
if (prefix == NULL)
return(xmlDictComputeKey(name, len));
plen = xmlStrlen(prefix);
if (plen == 0)
value += 30 * (unsigned long) ':';
else
value += 30 * (*prefix);
if (len > 10) {
value += name[len - (plen + 1 + 1)];
len = 10;
if (plen > 10)
plen = 10;
}
switch (plen) {
case 10: value += prefix[9];
case 9: value += prefix[8];
case 8: value += prefix[7];
case 7: value += prefix[6];
case 6: value += prefix[5];
case 5: value += prefix[4];
case 4: value += prefix[3];
case 3: value += prefix[2];
case 2: value += prefix[1];
case 1: value += prefix[0];
default: break;
}
len -= plen;
if (len > 0) {
value += (unsigned long) ':';
len--;
}
switch (len) {
case 10: value += name[9];
case 9: value += name[8];
case 8: value += name[7];
case 7: value += name[6];
case 6: value += name[5];
case 5: value += name[4];
case 4: value += name[3];
case 3: value += name[2];
case 2: value += name[1];
case 1: value += name[0];
default: break;
}
return(value);
}
/**
* xmlDictLookup:
* @param dict the dictionnary
* @param name the name of the userdata
* @param len the length of the name, if -1 it is recomputed
*
* Add the name to the hash dict if not present.
*
* Returns the internal copy of the name or NULL in case of internal error
*
* OOM: possible --> returns NULL and OOM flag is set
*/
XMLPUBFUNEXPORT const xmlChar*
xmlDictLookup(xmlDictPtr dict, const xmlChar *name, int len) {
unsigned long key, okey, nbi = 0;
xmlDictEntryPtr entry;
xmlDictEntryPtr insert;
const xmlChar *ret;
if (!dict || !name)
return(NULL);
if (len < 0)
len = xmlStrlen(name);
/*
* Check for duplicate and insertion location.
*/
okey = xmlDictComputeKey(name, len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
insert = NULL;
} else {
for (insert = &(dict->dict[key]);
insert->next;
insert = insert->next)
{
#ifdef __GNUC__
if (insert->len == len) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->len == len) && (!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
nbi++;
}
#ifdef __GNUC__
if (insert->len == len) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->len == len) && (!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
}
if (dict->subdict) {
key = okey % dict->subdict->size;
if (dict->subdict->dict[key].valid != 0) {
xmlDictEntryPtr tmp;
for (tmp = &(dict->subdict->dict[key]); tmp->next != NULL; tmp = tmp->next)
{
#ifdef __GNUC__
if (tmp->len == len) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->len == len) && (!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
nbi++;
}
#ifdef __GNUC__
if (tmp->len == len) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->len == len) && (!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
} // if (dict->subdict->dict[key].valid != 0)
key = okey % dict->size;
} // if (dict->subdict)
ret = xmlDictAddString(dict, name, len); // may set OOM flag
if (!ret)
return(NULL);
if (!insert) {
entry = &(dict->dict[key]);
} else {
entry = (xmlDictEntryPtr)xmlMalloc(sizeof(xmlDictEntry));
if (!entry)
return(NULL); //OOM
}
entry->name = ret;
entry->len = len;
entry->next = NULL;
entry->valid = 1;
if (insert)
insert->next = entry;
dict->nbElems++;
if ((nbi > MAX_HASH_LEN) &&
(dict->size <= ((MAX_DICT_HASH / 2) / MAX_HASH_LEN)))
{
xmlDictGrow(dict, MAX_HASH_LEN * 2 * dict->size);
if(OOM_FLAG)
return NULL;
}
/* Note that entry may have been freed at this point by xmlDictGrow */
return(ret);
}
/**
* xmlDictGrow:
* @param dict the dictionnary
* @param size the new size of the dictionnary
*
* resize the dictionnary
*
* Returns 0 in case of success, -1 in case of failure
*
* OOM: possible --> returns -1, OOM is set
*/
static int
xmlDictGrow(xmlDictPtr dict, int size) {
unsigned long key;
int oldsize, i;
xmlDictEntryPtr iter, next;
struct _xmlDictEntry *olddict;
#ifdef DEBUG_GROW
unsigned long nbElem = 0;
#endif
if (!dict || size < 8 || size > 8 * 2048)
return(-1);
oldsize = dict->size;
olddict = dict->dict;
if (!olddict)
return(-1);
dict->dict = (xmlDictEntryPtr)xmlMalloc(size * sizeof(xmlDictEntry));
if (!dict->dict) {
dict->dict = olddict;
return(-1);
}
memset(dict->dict, 0, size * sizeof(xmlDictEntry));
dict->size = size;
/* If the two loops are merged, there would be situations where
a new entry needs to allocated and data copied into it from
the main dict. So instead, we run through the array twice, first
copying all the elements in the main array (where we can't get
conflicts) and then the rest, so we only free (and don't allocate)
*/
for (i = 0; i < oldsize; i++)
{
if (olddict[i].valid == 0)
continue;
key = xmlDictComputeKey(olddict[i].name, olddict[i].len) % dict->size;
memcpy(&(dict->dict[key]), &(olddict[i]), sizeof(xmlDictEntry));
dict->dict[key].next = NULL;
#ifdef DEBUG_GROW
nbElem++;
#endif
}
for (i = 0; i < oldsize; i++)
{
iter = olddict[i].next;
while (iter) {
next = iter->next;
/*
* put back the entry in the new dict
*/
key = xmlDictComputeKey(iter->name, iter->len) % dict->size;
if (dict->dict[key].valid == 0) {
memcpy(&(dict->dict[key]), iter, sizeof(xmlDictEntry));
dict->dict[key].next = NULL;
dict->dict[key].valid = 1;
xmlFree(iter);
} else {
iter->next = dict->dict[key].next;
dict->dict[key].next = iter;
}
#ifdef DEBUG_GROW
nbElem++;
#endif
iter = next;
} // while (iter)
} // for (i = 0; i < oldsize; i++)
xmlFree(olddict);
#ifdef DEBUG_GROW
xmlGenericError(xmlGenericErrorContext,
"xmlDictGrow : from %d to %d, %d elems\n", oldsize, size, nbElem);
#endif
return(0);
}
/*
* xmlDictComputeQKey:
* Calculate the hash key
*/
static unsigned long
xmlDictComputeQKey(const xmlChar *prefix, const xmlChar *name, int len)
{
unsigned long value; // = 0L; //avoided initialization
int plen;
if (!prefix)
return(xmlDictComputeKey(name, len));
plen = xmlStrlen(prefix);
value = 30 * (plen ? *prefix : (unsigned long) ':');
if (len > 10) {
value += name[len - (plen + 1 + 1)];
len = 10;
if (plen > 10)
plen = 10;
}
// DONE: OPTIMIZE: see "Optimize-It" note in xmlDictComputeKey
/*
switch (plen) {
case 10: value += prefix[9];
case 9: value += prefix[8];
case 8: value += prefix[7];
case 7: value += prefix[6];
case 6: value += prefix[5];
case 5: value += prefix[4];
case 4: value += prefix[3];
case 3: value += prefix[2];
case 2: value += prefix[1];
case 1: value += prefix[0];
default: break;
}
*/
// REPLACED WITH
if (plen < 11 && plen >0)
value += prefix[plen-1];
//-------------------------------------
len -= plen;
if (len > 0) {
value += (unsigned long) ':';
len--;
}
/* --- REPLACED
switch (len) {
case 10: value += name[9];
case 9: value += name[8];
case 8: value += name[7];
case 7: value += name[6];
case 6: value += name[5];
case 5: value += name[4];
case 4: value += name[3];
case 3: value += name[2];
case 2: value += name[1];
case 1: value += name[0];
default: break;
}
*/
//-- REPLACED WITH
if(len > 0 && len < 11)
value += name[len-1];
//--------------------
return(value);
}
/**
* xmlDictExists:
* @dict: the dictionary
* @name: the name of the userdata
* @len: the length of the name, if -1 it is recomputed
*
* Check if the @name exists in the dictionary @dict.
*
* Returns the internal copy of the name or NULL if not found.
*/
const xmlChar *
xmlDictExists(xmlDictPtr dict, const xmlChar *name, int len) {
unsigned long key, okey, nbi = 0;
xmlDictEntryPtr insert;
unsigned int l;
if ((dict == NULL) || (name == NULL))
return(NULL);
if (len < 0)
l = strlen((const char *) name);
else
l = len;
if (((dict->limit > 0) && (l >= dict->limit)) ||
(l > INT_MAX / 2))
return(NULL);
/*
* Check for duplicate and insertion location.
*/
okey = xmlDictComputeKey(dict, name, l);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
insert = NULL;
} else {
for (insert = &(dict->dict[key]); insert->next != NULL;
insert = insert->next) {
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == l)) {
if (!memcmp(insert->name, name, l))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == l) &&
(!xmlStrncmp(insert->name, name, l)))
return(insert->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == l)) {
if (!memcmp(insert->name, name, l))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == l) &&
(!xmlStrncmp(insert->name, name, l)))
return(insert->name);
#endif
}
if (dict->subdict) {
unsigned long skey;
/* we cannot always reuse the same okey for the subdict */
if (((dict->size == MIN_DICT_SIZE) &&
(dict->subdict->size != MIN_DICT_SIZE)) ||
((dict->size != MIN_DICT_SIZE) &&
(dict->subdict->size == MIN_DICT_SIZE)))
skey = xmlDictComputeKey(dict->subdict, name, l);
else
skey = okey;
key = skey % dict->subdict->size;
if (dict->subdict->dict[key].valid != 0) {
xmlDictEntryPtr tmp;
for (tmp = &(dict->subdict->dict[key]); tmp->next != NULL;
tmp = tmp->next) {
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == l)) {
if (!memcmp(tmp->name, name, l))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == l) &&
(!xmlStrncmp(tmp->name, name, l)))
return(tmp->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == l)) {
if (!memcmp(tmp->name, name, l))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == l) &&
(!xmlStrncmp(tmp->name, name, l)))
return(tmp->name);
#endif
}
}
/* not found */
return(NULL);
}
/**
* xmlDictLookup:
* @dict: the dictionary
* @name: the name of the userdata
* @len: the length of the name, if -1 it is recomputed
*
* Add the @name to the dictionary @dict if not present.
*
* Returns the internal copy of the name or NULL in case of internal error
*/
const xmlChar *
xmlDictLookup(xmlDictPtr dict, const xmlChar *name, int len) {
unsigned long key, okey, nbi = 0;
xmlDictEntryPtr entry;
xmlDictEntryPtr insert;
const xmlChar *ret;
unsigned int l;
if ((dict == NULL) || (name == NULL))
return(NULL);
if (len < 0)
l = strlen((const char *) name);
else
l = len;
if (((dict->limit > 0) && (l >= dict->limit)) ||
(l > INT_MAX / 2))
return(NULL);
/*
* Check for duplicate and insertion location.
*/
okey = xmlDictComputeKey(dict, name, l);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
insert = NULL;
} else {
for (insert = &(dict->dict[key]); insert->next != NULL;
insert = insert->next) {
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == l)) {
if (!memcmp(insert->name, name, l))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == l) &&
(!xmlStrncmp(insert->name, name, l)))
return(insert->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == l)) {
if (!memcmp(insert->name, name, l))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == l) &&
(!xmlStrncmp(insert->name, name, l)))
return(insert->name);
#endif
}
if (dict->subdict) {
unsigned long skey;
/* we cannot always reuse the same okey for the subdict */
if (((dict->size == MIN_DICT_SIZE) &&
(dict->subdict->size != MIN_DICT_SIZE)) ||
((dict->size != MIN_DICT_SIZE) &&
(dict->subdict->size == MIN_DICT_SIZE)))
skey = xmlDictComputeKey(dict->subdict, name, l);
else
skey = okey;
key = skey % dict->subdict->size;
if (dict->subdict->dict[key].valid != 0) {
xmlDictEntryPtr tmp;
for (tmp = &(dict->subdict->dict[key]); tmp->next != NULL;
tmp = tmp->next) {
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == l)) {
if (!memcmp(tmp->name, name, l))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == l) &&
(!xmlStrncmp(tmp->name, name, l)))
return(tmp->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == l)) {
if (!memcmp(tmp->name, name, l))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == l) &&
(!xmlStrncmp(tmp->name, name, l)))
return(tmp->name);
#endif
}
key = okey % dict->size;
}
ret = xmlDictAddString(dict, name, l);
if (ret == NULL)
return(NULL);
if (insert == NULL) {
entry = &(dict->dict[key]);
} else {
entry = xmlMalloc(sizeof(xmlDictEntry));
if (entry == NULL)
return(NULL);
}
entry->name = ret;
entry->len = l;
entry->next = NULL;
entry->valid = 1;
entry->okey = okey;
if (insert != NULL)
insert->next = entry;
dict->nbElems++;
if ((nbi > MAX_HASH_LEN) &&
(dict->size <= ((MAX_DICT_HASH / 2) / MAX_HASH_LEN))) {
if (xmlDictGrow(dict, MAX_HASH_LEN * 2 * dict->size) != 0)
return(NULL);
}
/* Note that entry may have been freed at this point by xmlDictGrow */
return(ret);
}
/**
* xmlDictGrow:
* @dict: the dictionary
* @size: the new size of the dictionary
*
* resize the dictionary
*
* Returns 0 in case of success, -1 in case of failure
*/
static int
xmlDictGrow(xmlDictPtr dict, size_t size) {
unsigned long key, okey;
size_t oldsize, i;
xmlDictEntryPtr iter, next;
struct _xmlDictEntry *olddict;
#ifdef DEBUG_GROW
unsigned long nbElem = 0;
#endif
int ret = 0;
int keep_keys = 1;
if (dict == NULL)
return(-1);
if (size < 8)
return(-1);
if (size > 8 * 2048)
return(-1);
#ifdef DICT_DEBUG_PATTERNS
fprintf(stderr, "*");
#endif
oldsize = dict->size;
olddict = dict->dict;
if (olddict == NULL)
return(-1);
if (oldsize == MIN_DICT_SIZE)
keep_keys = 0;
dict->dict = xmlMalloc(size * sizeof(xmlDictEntry));
if (dict->dict == NULL) {
dict->dict = olddict;
return(-1);
}
memset(dict->dict, 0, size * sizeof(xmlDictEntry));
dict->size = size;
/* If the two loops are merged, there would be situations where
a new entry needs to allocated and data copied into it from
the main dict. It is nicer to run through the array twice, first
copying all the elements in the main array (less probability of
allocate) and then the rest, so we only free in the second loop.
*/
for (i = 0; i < oldsize; i++) {
if (olddict[i].valid == 0)
continue;
if (keep_keys)
okey = olddict[i].okey;
else
okey = xmlDictComputeKey(dict, olddict[i].name, olddict[i].len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
memcpy(&(dict->dict[key]), &(olddict[i]), sizeof(xmlDictEntry));
dict->dict[key].next = NULL;
dict->dict[key].okey = okey;
} else {
xmlDictEntryPtr entry;
entry = xmlMalloc(sizeof(xmlDictEntry));
if (entry != NULL) {
entry->name = olddict[i].name;
entry->len = olddict[i].len;
entry->okey = okey;
entry->next = dict->dict[key].next;
entry->valid = 1;
dict->dict[key].next = entry;
} else {
/*
* we don't have much ways to alert from herei
* result is loosing an entry and unicity garantee
*/
ret = -1;
}
}
#ifdef DEBUG_GROW
nbElem++;
#endif
}
for (i = 0; i < oldsize; i++) {
iter = olddict[i].next;
while (iter) {
next = iter->next;
/*
* put back the entry in the new dict
*/
if (keep_keys)
okey = iter->okey;
else
okey = xmlDictComputeKey(dict, iter->name, iter->len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
memcpy(&(dict->dict[key]), iter, sizeof(xmlDictEntry));
dict->dict[key].next = NULL;
dict->dict[key].valid = 1;
dict->dict[key].okey = okey;
xmlFree(iter);
} else {
iter->next = dict->dict[key].next;
iter->okey = okey;
dict->dict[key].next = iter;
}
#ifdef DEBUG_GROW
nbElem++;
#endif
iter = next;
}
}
xmlFree(olddict);
#ifdef DEBUG_GROW
xmlGenericError(xmlGenericErrorContext,
"xmlDictGrow : from %lu to %lu, %u elems\n", oldsize, size, nbElem);
#endif
return(ret);
}
const xmlChar *
xmlDictExists(xmlDictPtr dict, const xmlChar *name, int len) {
unsigned long key, okey, nbi = 0;
xmlDictEntryPtr insert;
if ((dict == NULL) || (name == NULL))
return(NULL);
if (len < 0)
len = strlen((const char *) name);
okey = xmlDictComputeKey(dict, name, len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
insert = NULL;
} else {
for (insert = &(dict->dict[key]); insert->next != NULL;
insert = insert->next) {
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == len)) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == len) &&
(!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == len)) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == len) &&
(!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
}
if (dict->subdict) {
unsigned long skey;
if (((dict->size == MIN_DICT_SIZE) &&
(dict->subdict->size != MIN_DICT_SIZE)) ||
((dict->size != MIN_DICT_SIZE) &&
(dict->subdict->size == MIN_DICT_SIZE)))
skey = xmlDictComputeKey(dict->subdict, name, len);
else
skey = okey;
key = skey % dict->subdict->size;
if (dict->subdict->dict[key].valid != 0) {
xmlDictEntryPtr tmp;
for (tmp = &(dict->subdict->dict[key]); tmp->next != NULL;
tmp = tmp->next) {
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == len)) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == len) &&
(!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == len)) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == len) &&
(!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
}
}
return(NULL);
}
const xmlChar *
xmlDictLookup(xmlDictPtr dict, const xmlChar *name, int len) {
unsigned long key, okey, nbi = 0;
xmlDictEntryPtr entry;
xmlDictEntryPtr insert;
const xmlChar *ret;
if ((dict == NULL) || (name == NULL))
return(NULL);
if (len < 0)
len = strlen((const char *) name);
okey = xmlDictComputeKey(dict, name, len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
insert = NULL;
} else {
for (insert = &(dict->dict[key]); insert->next != NULL;
insert = insert->next) {
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == len)) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == len) &&
(!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((insert->okey == okey) && (insert->len == len)) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->okey == okey) && (insert->len == len) &&
(!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
}
if (dict->subdict) {
unsigned long skey;
if (((dict->size == MIN_DICT_SIZE) &&
(dict->subdict->size != MIN_DICT_SIZE)) ||
((dict->size != MIN_DICT_SIZE) &&
(dict->subdict->size == MIN_DICT_SIZE)))
skey = xmlDictComputeKey(dict->subdict, name, len);
else
skey = okey;
key = skey % dict->subdict->size;
if (dict->subdict->dict[key].valid != 0) {
xmlDictEntryPtr tmp;
for (tmp = &(dict->subdict->dict[key]); tmp->next != NULL;
tmp = tmp->next) {
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == len)) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == len) &&
(!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
nbi++;
}
#ifdef __GNUC__
if ((tmp->okey == skey) && (tmp->len == len)) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->okey == skey) && (tmp->len == len) &&
(!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
}
key = okey % dict->size;
}
ret = xmlDictAddString(dict, name, len);
if (ret == NULL)
return(NULL);
if (insert == NULL) {
entry = &(dict->dict[key]);
} else {
entry = xmlMalloc(sizeof(xmlDictEntry));
if (entry == NULL)
return(NULL);
}
entry->name = ret;
entry->len = len;
entry->next = NULL;
entry->valid = 1;
entry->okey = okey;
if (insert != NULL)
insert->next = entry;
dict->nbElems++;
if ((nbi > MAX_HASH_LEN) &&
(dict->size <= ((MAX_DICT_HASH / 2) / MAX_HASH_LEN))) {
if (xmlDictGrow(dict, MAX_HASH_LEN * 2 * dict->size) != 0)
return(NULL);
}
return(ret);
}
static int
xmlDictGrow(xmlDictPtr dict, int size) {
unsigned long key, okey;
int oldsize, i;
xmlDictEntryPtr iter, next;
struct _xmlDictEntry *olddict;
#ifdef DEBUG_GROW
unsigned long nbElem = 0;
#endif
int ret = 0;
int keep_keys = 1;
if (dict == NULL)
return(-1);
if (size < 8)
return(-1);
if (size > 8 * 2048)
return(-1);
#ifdef DICT_DEBUG_PATTERNS
fprintf(stderr, "*");
#endif
oldsize = dict->size;
olddict = dict->dict;
if (olddict == NULL)
return(-1);
if (oldsize == MIN_DICT_SIZE)
keep_keys = 0;
dict->dict = xmlMalloc(size * sizeof(xmlDictEntry));
if (dict->dict == NULL) {
dict->dict = olddict;
return(-1);
}
memset(dict->dict, 0, size * sizeof(xmlDictEntry));
dict->size = size;
for (i = 0; i < oldsize; i++) {
if (olddict[i].valid == 0)
continue;
if (keep_keys)
okey = olddict[i].okey;
else
okey = xmlDictComputeKey(dict, olddict[i].name, olddict[i].len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
memcpy(&(dict->dict[key]), &(olddict[i]), sizeof(xmlDictEntry));
dict->dict[key].next = NULL;
dict->dict[key].okey = okey;
} else {
xmlDictEntryPtr entry;
entry = xmlMalloc(sizeof(xmlDictEntry));
if (entry != NULL) {
entry->name = olddict[i].name;
entry->len = olddict[i].len;
entry->okey = okey;
entry->next = dict->dict[key].next;
entry->valid = 1;
dict->dict[key].next = entry;
} else {
ret = -1;
}
}
#ifdef DEBUG_GROW
nbElem++;
#endif
}
for (i = 0; i < oldsize; i++) {
iter = olddict[i].next;
while (iter) {
next = iter->next;
if (keep_keys)
okey = iter->okey;
else
okey = xmlDictComputeKey(dict, iter->name, iter->len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
memcpy(&(dict->dict[key]), iter, sizeof(xmlDictEntry));
dict->dict[key].next = NULL;
dict->dict[key].valid = 1;
dict->dict[key].okey = okey;
xmlFree(iter);
} else {
iter->next = dict->dict[key].next;
iter->okey = okey;
dict->dict[key].next = iter;
}
#ifdef DEBUG_GROW
nbElem++;
#endif
iter = next;
}
}
xmlFree(olddict);
#ifdef DEBUG_GROW
xmlGenericError(xmlGenericErrorContext,
"xmlDictGrow : from %d to %d, %d elems\n", oldsize, size, nbElem);
#endif
return(ret);
}
/**
* xmlDictExists:
* @dict: the dictionnary
* @name: the name of the userdata
* @len: the length of the name, if -1 it is recomputed
*
* Check if the @name exists in the dictionnary @dict.
*
* Returns the internal copy of the name or NULL if not found.
*/
const xmlChar *
xmlDictExists(xmlDictPtr dict, const xmlChar *name, intptr_t len) {
unsigned long key, okey, nbi = 0;
xmlDictEntryPtr insert;
if ((dict == NULL) || (name == NULL))
return(NULL);
if (len < 0)
len = xmlStrlen(name);
/*
* Check for duplicate and insertion location.
*/
okey = xmlDictComputeKey(name, len);
key = okey % dict->size;
if (dict->dict[key].valid == 0) {
insert = NULL;
} else {
for (insert = &(dict->dict[key]); insert->next != NULL;
insert = insert->next) {
#ifdef __GNUC__
if (insert->len == len) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->len == len) &&
(!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
nbi++;
}
#ifdef __GNUC__
if (insert->len == len) {
if (!memcmp(insert->name, name, len))
return(insert->name);
}
#else
if ((insert->len == len) &&
(!xmlStrncmp(insert->name, name, len)))
return(insert->name);
#endif
}
if (dict->subdict) {
key = okey % dict->subdict->size;
if (dict->subdict->dict[key].valid != 0) {
xmlDictEntryPtr tmp;
for (tmp = &(dict->subdict->dict[key]); tmp->next != NULL;
tmp = tmp->next) {
#ifdef __GNUC__
if (tmp->len == len) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->len == len) &&
(!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
nbi++;
}
#ifdef __GNUC__
if (tmp->len == len) {
if (!memcmp(tmp->name, name, len))
return(tmp->name);
}
#else
if ((tmp->len == len) &&
(!xmlStrncmp(tmp->name, name, len)))
return(tmp->name);
#endif
}
key = okey % dict->size;
}
/* not found */
return(NULL);
}
