#include <string.h>
#include <libkern/c++/OSData.h>
#include <libkern/c++/OSSerialize.h>
#include <libkern/c++/OSLib.h>
#include <libkern/c++/OSString.h>
#include <string.h>
#define super OSObject
OSDefineMetaClassAndStructors(OSData, OSObject)
OSMetaClassDefineReservedUnused(OSData, 0);
OSMetaClassDefineReservedUnused(OSData, 1);
OSMetaClassDefineReservedUnused(OSData, 2);
OSMetaClassDefineReservedUnused(OSData, 3);
OSMetaClassDefineReservedUnused(OSData, 4);
OSMetaClassDefineReservedUnused(OSData, 5);
OSMetaClassDefineReservedUnused(OSData, 6);
OSMetaClassDefineReservedUnused(OSData, 7);
#define EXTERNAL ((unsigned int) -1)
#if OSALLOCDEBUG
extern "C" {
extern int debug_container_malloc_size;
};
#define ACCUMSIZE(s) do { debug_container_malloc_size += (s); } while(0)
#else
#define ACCUMSIZE(s)
#endif
bool OSData::initWithCapacity(unsigned int inCapacity)
{
if (!super::init())
return false;
if(inCapacity) {
data = (void *) kalloc(inCapacity);
if (!data)
return false;
}
length = 0;
capacity = inCapacity;
capacityIncrement = capacity;
if(!capacityIncrement)
capacityIncrement = 16;
ACCUMSIZE(capacity);
return true;
}
bool OSData::initWithBytes(const void *bytes, unsigned int inLength)
{
if ((inLength && !bytes) || !initWithCapacity(inLength))
return false;
bcopy(bytes, data, inLength);
length = inLength;
return true;
}
bool OSData::initWithBytesNoCopy(void *bytes, unsigned int inLength)
{
if (!super::init())
return false;
length = inLength;
capacity = EXTERNAL;
data = bytes;
return true;
}
bool OSData::initWithData(const OSData *inData)
{
return initWithBytes(inData->data, inData->length);
}
bool OSData::initWithData(const OSData *inData,
unsigned int start, unsigned int inLength)
{
const void *localData = inData->getBytesNoCopy(start, inLength);
if (localData)
return initWithBytes(localData, inLength);
else
return false;
}
OSData *OSData::withCapacity(unsigned int inCapacity)
{
OSData *me = new OSData;
if (me && !me->initWithCapacity(inCapacity)) {
me->free();
return 0;
}
return me;
}
OSData *OSData::withBytes(const void *bytes, unsigned int inLength)
{
OSData *me = new OSData;
if (me && !me->initWithBytes(bytes, inLength)) {
me->free();
return 0;
}
return me;
}
OSData *OSData::withBytesNoCopy(void *bytes, unsigned int inLength)
{
OSData *me = new OSData;
if (me && !me->initWithBytesNoCopy(bytes, inLength)) {
me->free();
return 0;
}
return me;
}
OSData *OSData::withData(const OSData *inData)
{
OSData *me = new OSData;
if (me && !me->initWithData(inData)) {
me->free();
return 0;
}
return me;
}
OSData *OSData::withData(const OSData *inData,
unsigned int start, unsigned int inLength)
{
OSData *me = new OSData;
if (me && !me->initWithData(inData, start, inLength)) {
me->free();
return 0;
}
return me;
}
void OSData::free()
{
if (capacity != EXTERNAL && data && capacity) {
kfree((vm_offset_t)data, capacity);
ACCUMSIZE( -capacity );
}
super::free();
}
unsigned int OSData::getLength() const { return length; }
unsigned int OSData::getCapacity() const { return capacity; }
unsigned int OSData::getCapacityIncrement() const
{
return capacityIncrement;
}
unsigned int OSData::setCapacityIncrement(unsigned increment)
{
return capacityIncrement = increment;
}
unsigned int OSData::ensureCapacity(unsigned int newCapacity)
{
unsigned char * newData;
if (newCapacity <= capacity)
return capacity;
newCapacity = (((newCapacity - 1) / capacityIncrement) + 1)
* capacityIncrement;
newData = (unsigned char *) kalloc(newCapacity);
if ( newData ) {
bzero(newData + capacity, newCapacity - capacity);
if (data) {
bcopy(data, newData, capacity);
kfree((vm_offset_t)data, capacity);
}
ACCUMSIZE( newCapacity - capacity );
data = (void *) newData;
capacity = newCapacity;
}
return capacity;
}
bool OSData::appendBytes(const void *bytes, unsigned int inLength)
{
unsigned int newSize;
if (inLength == 0)
return true;
if (capacity == EXTERNAL)
return false;
newSize = length + inLength;
if ( (newSize > capacity) && newSize > ensureCapacity(newSize) )
return false;
bcopy(bytes, &((unsigned char *)data)[length], inLength);
length = newSize;
return true;
}
bool OSData::appendByte(unsigned char byte, unsigned int inLength)
{
unsigned int newSize;
if (inLength == 0)
return true;
if (capacity == EXTERNAL)
return false;
newSize = length + inLength;
if ( (newSize > capacity) && newSize > ensureCapacity(newSize) )
return false;
memset(&((unsigned char *)data)[length], byte, inLength);
length = newSize;
return true;
}
bool OSData::appendBytes(const OSData *other)
{
return appendBytes(other->data, other->length);
}
const void *OSData::getBytesNoCopy() const
{
if (length == 0)
return 0;
else
return data;
}
const void *OSData::getBytesNoCopy(unsigned int start,
unsigned int inLength) const
{
const void *outData = 0;
if (length
&& start < length
&& (start + inLength) <= length)
outData = (const void *) ((char *) data + start);
return outData;
}
bool OSData::isEqualTo(const OSData *aData) const
{
unsigned int len;
len = aData->length;
if ( length != len )
return false;
return isEqualTo(aData->data, len);
}
bool OSData::isEqualTo(const void *someData, unsigned int inLength) const
{
return (length >= inLength) && (bcmp(data, someData, inLength) == 0);
}
bool OSData::isEqualTo(const OSMetaClassBase *obj) const
{
OSData * data;
OSString * str;
if ((data = OSDynamicCast(OSData, obj)))
return isEqualTo(data);
else if ((str = OSDynamicCast (OSString, obj)))
return isEqualTo(str);
else
return false;
}
bool OSData::isEqualTo(const OSString *obj) const
{
const char * aCString;
char * dataPtr;
unsigned int checkLen = length;
unsigned int stringLen;
if (NULL == obj)
return false;
stringLen = obj->getLength ();
dataPtr = (char *)data;
if (stringLen != checkLen) {
if ( (checkLen - stringLen) == 1) {
if (dataPtr[checkLen-1] != 0) return false;
checkLen--;
}
else
return false;
}
aCString = obj->getCStringNoCopy ();
for ( unsigned int i=0; i < checkLen; i++ ) {
if ( *dataPtr++ != aCString[i] )
return false;
}
return true;
}
static const char __CFPLDataEncodeTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
bool OSData::serialize(OSSerialize *s) const
{
unsigned int i;
const unsigned char *p;
unsigned char c;
if (s->previouslySerialized(this)) return true;
if (!s->addXMLStartTag(this, "data")) return false;
for (i = 0, p = (unsigned char *)data; i < length; i++, p++) {
switch (i % 3) {
case 0:
c = __CFPLDataEncodeTable [ ((p[0] >> 2) & 0x3f)];
if (!s->addChar(c)) return false;
break;
case 1:
c = __CFPLDataEncodeTable [ ((((p[-1] << 8) | p[0]) >> 4) & 0x3f)];
if (!s->addChar(c)) return false;
break;
case 2:
c = __CFPLDataEncodeTable [ ((((p[-1] << 8) | p[0]) >> 6) & 0x3f)];
if (!s->addChar(c)) return false;
c = __CFPLDataEncodeTable [ (p[0] & 0x3f)];
if (!s->addChar(c)) return false;
break;
}
}
switch (i % 3) {
case 0:
break;
case 1:
c = __CFPLDataEncodeTable [ ((p[-1] << 4) & 0x30)];
if (!s->addChar(c)) return false;
if (!s->addChar('=')) return false;
if (!s->addChar('=')) return false;
break;
case 2:
c = __CFPLDataEncodeTable [ ((p[-1] << 2) & 0x3c)];
if (!s->addChar(c)) return false;
if (!s->addChar('=')) return false;
break;
}
return s->addXMLEndTag("data");
}