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- (unsigned long)hash
{
unsigned long hash;
OFHashInit(&hash);
for (size_t i = 0; i < _count * _itemSize; i++)
OFHashAdd(&hash, ((uint8_t *)_items)[i]);
OFHashFinalize(&hash);
return hash;
}
- (OFData *)subdataWithRange: (OFRange)range
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- (unsigned long)hash
{
unsigned long hash;
OFHashInit(&hash);
for (size_t i = 0; i < _count * _itemSize; i++)
OFHashAddByte(&hash, ((uint8_t *)_items)[i]);
OFHashFinalize(&hash);
return hash;
}
- (OFData *)subdataWithRange: (OFRange)range
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range.location + range.length > _count)
@throw [OFOutOfRangeException exception];
if (data == nil || data.itemSize != _itemSize)
@throw [OFInvalidArgumentException exception];
if ((searchLength = data.count) == 0)
return OFRangeMake(0, 0);
if (searchLength > range.length)
return OFRangeMake(OFNotFound, 0);
search = data.items;
if (options & OFDataSearchBackwards) {
for (size_t i = range.length - searchLength;; i--) {
if (memcmp(_items + i * _itemSize, search,
searchLength * _itemSize) == 0)
return OFRangeMake(i, searchLength);
/* No match and we're at the last item */
if (i == 0)
break;
}
} else {
for (size_t i = range.location;
i <= range.length - searchLength; i++)
if (memcmp(_items + i * _itemSize, search,
searchLength * _itemSize) == 0)
return OFRangeMake(i, searchLength);
}
return OFRangeMake(OFNotFound, 0);
}
#ifdef OF_HAVE_FILES
- (void)writeToFile: (OFString *)path
{
OFFile *file = [[OFFile alloc] initWithPath: path mode: @"w"];
@try {
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range.location + range.length > _count)
@throw [OFOutOfRangeException exception];
if (data == nil || data.itemSize != _itemSize)
@throw [OFInvalidArgumentException exception];
if ((searchLength = data.count) == 0)
return OFMakeRange(0, 0);
if (searchLength > range.length)
return OFMakeRange(OFNotFound, 0);
search = data.items;
if (options & OFDataSearchBackwards) {
for (size_t i = range.length - searchLength;; i--) {
if (memcmp(_items + i * _itemSize, search,
searchLength * _itemSize) == 0)
return OFMakeRange(i, searchLength);
/* No match and we're at the last item */
if (i == 0)
break;
}
} else {
for (size_t i = range.location;
i <= range.length - searchLength; i++)
if (memcmp(_items + i * _itemSize, search,
searchLength * _itemSize) == 0)
return OFMakeRange(i, searchLength);
}
return OFMakeRange(OFNotFound, 0);
}
#ifdef OF_HAVE_FILES
- (void)writeToFile: (OFString *)path
{
OFFile *file = [[OFFile alloc] initWithPath: path mode: @"w"];
@try {
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