CFRange CFDataFind(CFDataRef data, CFDataRef dataToFind, CFRange searchRange, CFDataSearchFlags compareOptions) {
// No objc dispatch
__CFGenericValidateType(data, __kCFDataTypeID);
__CFGenericValidateType(dataToFind, __kCFDataTypeID);
__CFDataValidateRange(data, searchRange, __PRETTY_FUNCTION__);
return _CFDataFindBytes(data, dataToFind, searchRange, compareOptions);
}
void CFDataReplaceBytes(CFMutableDataRef data, CFRange range, const uint8_t *newBytes, CFIndex newLength) {
CF_OBJC_FUNCDISPATCHV(__kCFDataTypeID, void, (NSMutableData *)data, replaceBytesInRange:NSMakeRange(range.location, range.length) withBytes:(const void *)newBytes length:(NSUInteger)newLength);
__CFGenericValidateType(data, __kCFDataTypeID);
__CFDataValidateRange(data, range, __PRETTY_FUNCTION__);
CFAssert1(__CFDataIsMutable(data), __kCFLogAssertion, "%s(): data is immutable", __PRETTY_FUNCTION__);
CFAssert2(0 <= newLength, __kCFLogAssertion, "%s(): newLength (%d) cannot be less than zero", __PRETTY_FUNCTION__, newLength);
CFIndex len = __CFDataLength(data);
if (len < 0 || range.length < 0 || newLength < 0) HALT;
CFIndex newCount = len - range.length + newLength;
if (newCount < 0) HALT;
uint8_t *bytePtr = (uint8_t *)CFDataGetMutableBytePtr(data);
uint8_t *srcBuf = (uint8_t *)newBytes;
switch (__CFMutableVariety(data)) {
case kCFMutable:
if (__CFDataNumBytes(data) < newCount) {
if (bytePtr && newBytes && newBytes < bytePtr + __CFDataCapacity(data) && bytePtr < newBytes + newLength) {
srcBuf = (uint8_t *)malloc(newLength * sizeof(uint8_t));
memmove(srcBuf, newBytes, newLength * sizeof(uint8_t));
}
__CFDataGrow(data, newLength - range.length, false);
bytePtr = (uint8_t *)CFDataGetMutableBytePtr(data);
}
break;
case kCFFixedMutable:
CFAssert1(newCount <= __CFDataCapacity(data), __kCFLogAssertion, "%s(): fixed-capacity data is full", __PRETTY_FUNCTION__);
// Continuing after this could cause buffer overruns.
if (newCount > __CFDataCapacity(data)) HALT;
break;
}
if (newLength != range.length && range.location + range.length < len) {
memmove(bytePtr + range.location + newLength, bytePtr + range.location + range.length, (len - range.location - range.length) * sizeof(uint8_t));
}
if (0 < newLength) {
memmove(bytePtr + range.location, srcBuf, newLength * sizeof(uint8_t));
}
if (srcBuf != newBytes) free(srcBuf);
__CFDataSetNumBytesUsed(data, newCount);
__CFDataSetLength(data, newCount);
}
void CFDataGetBytes(CFDataRef data, CFRange range, uint8_t *buffer) {
CF_OBJC_FUNCDISPATCHV(__kCFDataTypeID, void, (NSData *)data, getBytes:(void *)buffer range:NSMakeRange(range.location, range.length));
__CFDataValidateRange(data, range, __PRETTY_FUNCTION__);
memmove(buffer, CFDataGetBytePtr(data) + range.location, range.length);
}
void CFDataGetBytes(CFDataRef data, CFRange range, uint8_t *buffer) {
CF_OBJC_FUNCDISPATCH2(__kCFDataTypeID, void, data, "getBytes:range:", buffer, range);
__CFDataValidateRange(data, range, __PRETTY_FUNCTION__);
memmove(buffer, CFDataGetBytePtr(data) + range.location, range.length);
}
