www.pudn.com > truecrypt-4.2-source-code.zip > Dictionary.c

/*  
Copyright (c) 2004-2006 TrueCrypt Foundation. All rights reserved.  
 
Covered by TrueCrypt License 2.0 the full text of which is contained in the file 
License.txt included in TrueCrypt binary and source code distribution archives.  
*/ 
 
#include "../Common/Dictionary.h" 
#include  
 
static DictionaryEntry StringDictionary[4096]; 
static int LastDictionaryEntry = -1; 
static int MaxDictionaryEntry = sizeof (StringDictionary) / sizeof (DictionaryEntry) - 1; 
 
static void *DataPool = NULL; 
static size_t DataPoolSize = 0; 
 
int AddDictionaryEntry (char *key, int intKey, void *value) 
{ 
	int i; 
	if (LastDictionaryEntry >= MaxDictionaryEntry) return -1; 
 
	// Replace identical key if it exists 
	for (i = 0; i <= LastDictionaryEntry; i++) 
	{ 
		if ((StringDictionary[i].Key != NULL 
			&& key != NULL 
			&& strcmp (StringDictionary[i].Key, key) == 0) 
			|| (key == NULL && StringDictionary[i].IntKey == intKey)) 
		{ 
			StringDictionary[i].Key = key; 
			StringDictionary[i].IntKey = intKey; 
			StringDictionary[i].Value = value; 
 
			return i; 
		} 
	} 
 
	LastDictionaryEntry++; 
 
	StringDictionary[LastDictionaryEntry].Key = key; 
	StringDictionary[LastDictionaryEntry].IntKey = intKey; 
	StringDictionary[LastDictionaryEntry].Value = value; 
 
	return LastDictionaryEntry; 
} 
 
 
void *GetDictionaryValue (char *key) 
{ 
	int i; 
	for (i = 0; i <= LastDictionaryEntry; i++) 
	{ 
		if (StringDictionary[i].Key != NULL 
			&& strcmp (StringDictionary[i].Key, key) == 0) 
			return StringDictionary[i].Value; 
	} 
 
	return NULL; 
} 
 
 
void *GetDictionaryValueByInt (int intKey) 
{ 
	int i; 
	for (i = 0; i <= LastDictionaryEntry; i++) 
	{ 
		if (StringDictionary[i].IntKey == intKey) 
			return StringDictionary[i].Value; 
	} 
 
	return NULL; 
} 
 
 
void *AddPoolData (void *data, size_t dataSize) 
{ 
 
	if (DataPoolSize + dataSize > DATA_POOL_CAPACITY) return NULL; 
 
	if (DataPool == NULL) 
	{ 
		DataPool = malloc (DATA_POOL_CAPACITY); 
		if (DataPool == NULL) return NULL; 
	} 
 
	memcpy ((BYTE *)DataPool + DataPoolSize, data, dataSize); 
 
	//if (wcschr((WCHAR *)((BYTE *)DataPool + DataPoolSize), '%') == 0) 
	//	_wcsupr ((WCHAR *)((BYTE *)DataPool + DataPoolSize)); 
	//else 
	//	((WCHAR *)((BYTE *)DataPool + DataPoolSize))[0] = L'*'; 
 
	// Ensure 32-bit alignment for next entries 
	dataSize = (dataSize + 3) & (~(size_t)3); 
 
	DataPoolSize += dataSize; 
	return (BYTE *)DataPool + DataPoolSize - dataSize; 
} 
 
 
void ClearDictionaryPool () 
{ 
	DataPoolSize = 0; 
	LastDictionaryEntry = -1; 
}