628 lines
18 KiB
C
628 lines
18 KiB
C
/* -*- tab-width: 4; -*- */
|
|
/* vi: set sw=2 ts=4 expandtab: */
|
|
|
|
/*
|
|
* Copyright 2010-2020 The Khronos Group Inc.
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @internal
|
|
* @file hashlist.c
|
|
* @~English
|
|
*
|
|
* @brief Functions for creating and using a hash list of key-value
|
|
* pairs.
|
|
*
|
|
* @author Mark Callow, HI Corporation
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
// This is to avoid compile warnings. strlen is defined as returning
|
|
// size_t and is used by the uthash macros. This avoids having to
|
|
// make changes to uthash and a bunch of casts in this file. The
|
|
// casts would be required because the key and value lengths in KTX
|
|
// are specified as 4 byte quantities so we can't change _keyAndValue
|
|
// below to use size_t.
|
|
#define strlen(x) ((unsigned int)strlen(x))
|
|
|
|
#include "uthash.h"
|
|
|
|
#include "ktx.h"
|
|
#include "ktxint.h"
|
|
|
|
|
|
/**
|
|
* @internal
|
|
* @struct ktxKVListEntry
|
|
* @brief Hash list entry structure
|
|
*/
|
|
typedef struct ktxKVListEntry {
|
|
unsigned int keyLen; /*!< Length of the key */
|
|
char* key; /*!< Pointer to key string */
|
|
unsigned int valueLen; /*!< Length of the value */
|
|
void* value; /*!< Pointer to the value */
|
|
UT_hash_handle hh; /*!< handle used by UT hash */
|
|
} ktxKVListEntry;
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Construct an empty hash list for storing key-value pairs.
|
|
*
|
|
* @param [in] pHead pointer to the location to write the list head.
|
|
*/
|
|
void
|
|
ktxHashList_Construct(ktxHashList* pHead)
|
|
{
|
|
*pHead = NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Construct a hash list by copying another.
|
|
*
|
|
* @param [in] pHead pointer to head of the list.
|
|
* @param [in] orig head of the original hash list.
|
|
*/
|
|
void
|
|
ktxHashList_ConstructCopy(ktxHashList* pHead, ktxHashList orig)
|
|
{
|
|
ktxHashListEntry* entry = orig;
|
|
*pHead = NULL;
|
|
for (; entry != NULL; entry = ktxHashList_Next(entry)) {
|
|
(void)ktxHashList_AddKVPair(pHead,
|
|
entry->key, entry->valueLen, entry->value);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Destruct a hash list.
|
|
*
|
|
* All memory associated with the hash list's keys and values
|
|
* is freed.
|
|
*
|
|
* @param [in] pHead pointer to the hash list to be destroyed.
|
|
*/
|
|
void
|
|
ktxHashList_Destruct(ktxHashList* pHead)
|
|
{
|
|
ktxKVListEntry* kv;
|
|
ktxKVListEntry* head = *pHead;
|
|
|
|
for(kv = head; kv != NULL;) {
|
|
ktxKVListEntry* tmp = (ktxKVListEntry*)kv->hh.next;
|
|
HASH_DELETE(hh, head, kv);
|
|
free(kv);
|
|
kv = tmp;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Create an empty hash list for storing key-value pairs.
|
|
*
|
|
* @param [in,out] ppHl address of a variable in which to set a pointer to
|
|
* the newly created hash list.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
* @exception KTX_OUT_OF_MEMORY if not enough memory.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_Create(ktxHashList** ppHl)
|
|
{
|
|
ktxHashList* hl = (ktxHashList*)malloc(sizeof (ktxKVListEntry*));
|
|
if (hl == NULL)
|
|
return KTX_OUT_OF_MEMORY;
|
|
|
|
ktxHashList_Construct(hl);
|
|
*ppHl = hl;
|
|
return KTX_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Create a copy of a hash list.
|
|
*
|
|
* @param [in,out] ppHl address of a variable in which to set a pointer to
|
|
* the newly created hash list.
|
|
* @param [in] orig head of the ktxHashList to copy.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
* @exception KTX_OUT_OF_MEMORY if not enough memory.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_CreateCopy(ktxHashList** ppHl, ktxHashList orig)
|
|
{
|
|
ktxHashList* hl = (ktxHashList*)malloc(sizeof (ktxKVListEntry*));
|
|
if (hl == NULL)
|
|
return KTX_OUT_OF_MEMORY;
|
|
|
|
ktxHashList_ConstructCopy(hl, orig);
|
|
*ppHl = hl;
|
|
return KTX_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Destroy a hash list.
|
|
*
|
|
* All memory associated with the hash list's keys and values
|
|
* is freed. The hash list is also freed.
|
|
*
|
|
* @param [in] pHead pointer to the hash list to be destroyed.
|
|
*/
|
|
void
|
|
ktxHashList_Destroy(ktxHashList* pHead)
|
|
{
|
|
ktxHashList_Destruct(pHead);
|
|
free(pHead);
|
|
}
|
|
|
|
#if !__clang__ && __GNUC__ // Grumble clang grumble
|
|
// These are in uthash.h macros. I don't want to change that file.
|
|
#pragma GCC diagnostic push
|
|
#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
|
|
#endif
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Add a key value pair to a hash list.
|
|
*
|
|
* The value can be empty, i.e, its length can be 0.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
* @param [in] key pointer to the UTF8 NUL-terminated string to be used as the key.
|
|
* @param [in] valueLen the number of bytes of data in @p value.
|
|
* @param [in] value pointer to the bytes of data constituting the value.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
* @exception KTX_INVALID_VALUE if @p pHead, @p key or @p value are NULL, @p key is an
|
|
* empty string or @p valueLen == 0.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_AddKVPair(ktxHashList* pHead, const char* key, unsigned int valueLen, const void* value)
|
|
{
|
|
if (pHead && key && (valueLen == 0 || value)) {
|
|
unsigned int keyLen = (unsigned int)strlen(key) + 1;
|
|
ktxKVListEntry* kv;
|
|
|
|
if (keyLen == 1)
|
|
return KTX_INVALID_VALUE; /* Empty string */
|
|
|
|
/* Allocate all the memory as a block */
|
|
kv = (ktxKVListEntry*)malloc(sizeof(ktxKVListEntry) + keyLen + valueLen);
|
|
/* Put key first */
|
|
kv->key = (char *)kv + sizeof(ktxKVListEntry);
|
|
kv->keyLen = keyLen;
|
|
memcpy(kv->key, key, keyLen);
|
|
/* then value */
|
|
kv->valueLen = valueLen;
|
|
if (valueLen > 0) {
|
|
kv->value = kv->key + keyLen;
|
|
memcpy(kv->value, value, valueLen);
|
|
} else {
|
|
kv->value = 0;
|
|
}
|
|
|
|
HASH_ADD_KEYPTR( hh, *pHead, kv->key, kv->keyLen-1, kv);
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Delete a key value pair in a hash list.
|
|
*
|
|
* Is a nop if the key is not in the hash.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
* @param [in] key pointer to the UTF8 NUL-terminated string to be used as the key.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
* @exception KTX_INVALID_VALUE if @p pHead is NULL or @p key is an empty
|
|
* string.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_DeleteKVPair(ktxHashList* pHead, const char* key)
|
|
{
|
|
if (pHead && key) {
|
|
ktxKVListEntry* kv;
|
|
|
|
HASH_FIND_STR( *pHead, key, kv ); /* kv: pointer to target entry. */
|
|
if (kv != NULL)
|
|
HASH_DEL(*pHead, kv);
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Delete an entry from a hash list.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
* @param [in] pEntry pointer to the ktxHashListEntry to delete.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
* @exception KTX_INVALID_VALUE if @p pHead is NULL or @p key is an empty
|
|
* string.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_DeleteEntry(ktxHashList* pHead, ktxHashListEntry* pEntry)
|
|
{
|
|
if (pHead && pEntry) {
|
|
HASH_DEL(*pHead, pEntry);
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Looks up a key in a hash list and returns the entry.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
* @param [in] key pointer to a UTF8 NUL-terminated string to find.
|
|
* @param [in,out] ppEntry @p *ppEntry is set to the point at the
|
|
* ktxHashListEntry.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
*
|
|
* @exception KTX_INVALID_VALUE if @p This, @p key or @p pValueLen or @p ppValue
|
|
* is NULL.
|
|
* @exception KTX_NOT_FOUND an entry matching @p key was not found.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_FindEntry(ktxHashList* pHead, const char* key,
|
|
ktxHashListEntry** ppEntry)
|
|
{
|
|
if (pHead && key) {
|
|
ktxKVListEntry* kv;
|
|
|
|
HASH_FIND_STR( *pHead, key, kv ); /* kv: output pointer */
|
|
|
|
if (kv) {
|
|
*ppEntry = kv;
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return KTX_NOT_FOUND;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Looks up a key in a hash list and returns the value.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
* @param [in] key pointer to a UTF8 NUL-terminated string to find.
|
|
* @param [in,out] pValueLen @p *pValueLen is set to the number of bytes of
|
|
* data in the returned value.
|
|
* @param [in,out] ppValue @p *ppValue is set to the point to the value for
|
|
* @p key.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
*
|
|
* @exception KTX_INVALID_VALUE if @p This, @p key or @p pValueLen or @p ppValue
|
|
* is NULL.
|
|
* @exception KTX_NOT_FOUND an entry matching @p key was not found.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_FindValue(ktxHashList *pHead, const char* key, unsigned int* pValueLen, void** ppValue)
|
|
{
|
|
if (pValueLen && ppValue) {
|
|
ktxHashListEntry* pEntry;
|
|
KTX_error_code result;
|
|
|
|
result = ktxHashList_FindEntry(pHead, key, &pEntry);
|
|
if (result == KTX_SUCCESS) {
|
|
ktxHashListEntry_GetValue(pEntry, pValueLen, ppValue);
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return result;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
|
|
#if !__clang__ && __GNUC__
|
|
#pragma GCC diagnostic pop
|
|
#endif
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Returns the next entry in a ktxHashList.
|
|
*
|
|
* Use for iterating through the list:
|
|
* @code
|
|
* ktxHashListEntry* entry;
|
|
* for (entry = listHead; entry != NULL; entry = ktxHashList_Next(entry)) {
|
|
* ...
|
|
* };
|
|
* @endcode
|
|
*
|
|
* Note
|
|
*
|
|
* @param [in] entry pointer to a hash list entry. Note that a ktxHashList*,
|
|
* i.e. the list head, is also a pointer to an entry so
|
|
* can be passed to this function.
|
|
*
|
|
* @return a pointer to the next entry or NULL.
|
|
*
|
|
*/
|
|
ktxHashListEntry*
|
|
ktxHashList_Next(ktxHashListEntry* entry)
|
|
{
|
|
if (entry) {
|
|
return ((ktxKVListEntry*)entry)->hh.next;
|
|
} else
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Serialize a hash list to a block of data suitable for writing
|
|
* to a file.
|
|
*
|
|
* The caller is responsible for freeing the data block returned by this
|
|
* function.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
* @param [in,out] pKvdLen @p *pKvdLen is set to the number of bytes of
|
|
* data in the returned data block.
|
|
* @param [in,out] ppKvd @p *ppKvd is set to the point to the block of
|
|
* memory containing the serialized data or
|
|
* NULL. if the hash list is empty.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
*
|
|
* @exception KTX_INVALID_VALUE if @p This, @p pKvdLen or @p ppKvd is NULL.
|
|
* @exception KTX_OUT_OF_MEMORY there was not enough memory to serialize the
|
|
* data.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_Serialize(ktxHashList* pHead,
|
|
unsigned int* pKvdLen, unsigned char** ppKvd)
|
|
{
|
|
|
|
if (pHead && pKvdLen && ppKvd) {
|
|
ktxKVListEntry* kv;
|
|
unsigned int bytesOfKeyValueData = 0;
|
|
unsigned int keyValueLen;
|
|
unsigned char* sd;
|
|
char padding[4] = {0, 0, 0, 0};
|
|
|
|
for (kv = *pHead; kv != NULL; kv = kv->hh.next) {
|
|
/* sizeof(sd) is to make space to write keyAndValueByteSize */
|
|
keyValueLen = kv->keyLen + kv->valueLen + sizeof(ktx_uint32_t);
|
|
/* Add valuePadding */
|
|
keyValueLen = _KTX_PAD4(keyValueLen);
|
|
bytesOfKeyValueData += keyValueLen;
|
|
}
|
|
|
|
if (bytesOfKeyValueData == 0) {
|
|
*pKvdLen = 0;
|
|
*ppKvd = NULL;
|
|
} else {
|
|
sd = malloc(bytesOfKeyValueData);
|
|
if (!sd)
|
|
return KTX_OUT_OF_MEMORY;
|
|
|
|
*pKvdLen = bytesOfKeyValueData;
|
|
*ppKvd = sd;
|
|
|
|
for (kv = *pHead; kv != NULL; kv = kv->hh.next) {
|
|
int padLen;
|
|
|
|
keyValueLen = kv->keyLen + kv->valueLen;
|
|
*(ktx_uint32_t*)sd = keyValueLen;
|
|
sd += sizeof(ktx_uint32_t);
|
|
memcpy(sd, kv->key, kv->keyLen);
|
|
sd += kv->keyLen;
|
|
if (kv->valueLen > 0)
|
|
memcpy(sd, kv->value, kv->valueLen);
|
|
sd += kv->valueLen;
|
|
padLen = _KTX_PAD4_LEN(keyValueLen);
|
|
memcpy(sd, padding, padLen);
|
|
sd += padLen;
|
|
}
|
|
}
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
|
|
|
|
int sort_by_key_codepoint(ktxKVListEntry* a, ktxKVListEntry* b) {
|
|
return strcmp(a->key, b->key);
|
|
}
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Sort a hash list in order of the UTF8 codepoints.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
*
|
|
* @exception KTX_INVALID_VALUE if @p This is NULL.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_Sort(ktxHashList* pHead)
|
|
{
|
|
if (pHead) {
|
|
//ktxKVListEntry* kv = (ktxKVListEntry*)pHead;
|
|
|
|
HASH_SORT(*pHead, sort_by_key_codepoint);
|
|
return KTX_SUCCESS;
|
|
} else {
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashList @public
|
|
* @~English
|
|
* @brief Construct a hash list from a block of serialized key-value
|
|
* data read from a file.
|
|
* @note The bytes of the 32-bit key-value lengths within the serialized data
|
|
* are expected to be in native endianness.
|
|
*
|
|
* @param [in] pHead pointer to the head of the target hash list.
|
|
* @param [in] kvdLen the length of the serialized key-value data.
|
|
* @param [in] pKvd pointer to the serialized key-value data.
|
|
* table.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
*
|
|
* @exception KTX_INVALID_OPERATION if @p pHead does not point to an empty list.
|
|
* @exception KTX_INVALID_VALUE if @p pKvd or @p pHt is NULL or kvdLen == 0.
|
|
* @exception KTX_OUT_OF_MEMORY there was not enough memory to create the hash
|
|
* table.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashList_Deserialize(ktxHashList* pHead, unsigned int kvdLen, void* pKvd)
|
|
{
|
|
char* src = pKvd;
|
|
KTX_error_code result;
|
|
|
|
if (kvdLen == 0 || pKvd == NULL || pHead == NULL)
|
|
return KTX_INVALID_VALUE;
|
|
|
|
if (*pHead != NULL)
|
|
return KTX_INVALID_OPERATION;
|
|
|
|
result = KTX_SUCCESS;
|
|
while (result == KTX_SUCCESS && src < (char *)pKvd + kvdLen) {
|
|
if (src + 6 > (char *)pKvd + kvdLen) {
|
|
// Not enough space for another entry
|
|
return KTX_FILE_DATA_ERROR;
|
|
}
|
|
|
|
char* key;
|
|
unsigned int keyLen, valueLen;
|
|
void* value;
|
|
ktx_uint32_t keyAndValueByteSize = *((ktx_uint32_t*)src);
|
|
|
|
if (src + 4 + keyAndValueByteSize > (char *)pKvd + kvdLen) {
|
|
// Not enough space for this entry
|
|
return KTX_FILE_DATA_ERROR;
|
|
}
|
|
|
|
src += sizeof(keyAndValueByteSize);
|
|
key = src;
|
|
keyLen = 0;
|
|
|
|
while (keyLen < keyAndValueByteSize && key[keyLen] != '\0') keyLen++;
|
|
|
|
if (key[keyLen] != '\0') {
|
|
// Missing NULL terminator
|
|
return KTX_FILE_DATA_ERROR;
|
|
}
|
|
|
|
if (keyLen >= 3 && key[0] == '\xEF' && key[1] == '\xBB' && key[2] == '\xBF') {
|
|
// Forbidden BOM
|
|
return KTX_FILE_DATA_ERROR;
|
|
}
|
|
|
|
keyLen += 1;
|
|
value = key + keyLen;
|
|
|
|
valueLen = keyAndValueByteSize - keyLen;
|
|
result = ktxHashList_AddKVPair(pHead, key, valueLen,
|
|
valueLen > 0 ? value : NULL);
|
|
if (result == KTX_SUCCESS) {
|
|
src += _KTX_PAD4(keyAndValueByteSize);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashListEntry @public
|
|
* @~English
|
|
* @brief Return the key of a ktxHashListEntry
|
|
*
|
|
* @param [in] This The target hash list entry.
|
|
* @param [in,out] pKeyLen @p *pKeyLen is set to the byte length of
|
|
* the returned key.
|
|
* @param [in,out] ppKey @p *ppKey is set to the point to the value of
|
|
* @p the key.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
*
|
|
* @exception KTX_INVALID_VALUE if @p pKvd or @p pHt is NULL or kvdLen == 0.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashListEntry_GetKey(ktxHashListEntry* This,
|
|
unsigned int* pKeyLen, char** ppKey)
|
|
{
|
|
if (pKeyLen && ppKey) {
|
|
ktxKVListEntry* kv = (ktxKVListEntry*)This;
|
|
*pKeyLen = kv->keyLen;
|
|
*ppKey = kv->key;
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|
|
|
|
|
|
/**
|
|
* @memberof ktxHashListEntry @public
|
|
* @~English
|
|
* @brief Return the value from a ktxHashListEntry
|
|
*
|
|
* @param [in] This The target hash list entry.
|
|
* @param [in,out] pValueLen @p *pValueLen is set to the number of bytes of
|
|
* data in the returned value.
|
|
* @param [in,out] ppValue @p *ppValue is set to point to the value of
|
|
* of the target entry.
|
|
*
|
|
* @return KTX_SUCCESS or one of the following error codes.
|
|
*
|
|
* @exception KTX_INVALID_VALUE if @p pKvd or @p pHt is NULL or kvdLen == 0.
|
|
*/
|
|
KTX_error_code
|
|
ktxHashListEntry_GetValue(ktxHashListEntry* This,
|
|
unsigned int* pValueLen, void** ppValue)
|
|
{
|
|
if (pValueLen && ppValue) {
|
|
ktxKVListEntry* kv = (ktxKVListEntry*)This;
|
|
*pValueLen = kv->valueLen;
|
|
*ppValue = kv->valueLen > 0 ? kv->value : NULL;
|
|
return KTX_SUCCESS;
|
|
} else
|
|
return KTX_INVALID_VALUE;
|
|
}
|