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* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#import "OFMessagePackExtension.h"
#import "OFDataArray.h"
#import "OFData.h"
#import "OFString.h"
#import "OFInvalidArgumentException.h"
@implementation OFMessagePackExtension
@synthesize type = _type, data = _data;
+ (instancetype)extensionWithType: (int8_t)type
data: (OFDataArray *)data
data: (OFData *)data
{
return [[[self alloc] initWithType: type
data: data] autorelease];
}
- init
{
OF_INVALID_INIT_METHOD
}
- initWithType: (int8_t)type
data: (OFDataArray *)data
data: (OFData *)data
{
self = [super init];
@try {
if (data == nil || [data itemSize] != 1)
@throw [OFInvalidArgumentException exception];
_type = type;
_data = [data retain];
_data = [data copy];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_data release];
[super dealloc];
}
- (OFDataArray *)messagePackRepresentation
- (OFData *)messagePackRepresentation
{
OFDataArray *ret;
OFMutableData *ret;
uint8_t prefix;
size_t count = [_data count];
if (count == 1) {
ret = [OFDataArray dataArrayWithCapacity: 3];
ret = [OFMutableData dataWithCapacity: 3];
prefix = 0xD4;
[ret addItem: &prefix];
[ret addItem: &_type];
} else if (count == 2) {
ret = [OFDataArray dataArrayWithCapacity: 4];
ret = [OFMutableData dataWithCapacity: 4];
prefix = 0xD5;
[ret addItem: &prefix];
[ret addItem: &_type];
} else if (count == 4) {
ret = [OFDataArray dataArrayWithCapacity: 6];
ret = [OFMutableData dataWithCapacity: 6];
prefix = 0xD6;
[ret addItem: &prefix];
[ret addItem: &_type];
} else if (count == 8) {
ret = [OFDataArray dataArrayWithCapacity: 10];
ret = [OFMutableData dataWithCapacity: 10];
prefix = 0xD7;
[ret addItem: &prefix];
[ret addItem: &_type];
} else if (count == 16) {
ret = [OFDataArray dataArrayWithCapacity: 18];
ret = [OFMutableData dataWithCapacity: 18];
prefix = 0xD8;
[ret addItem: &prefix];
[ret addItem: &_type];
} else if (count < 0x100) {
uint8_t length;
ret = [OFDataArray dataArrayWithCapacity: count + 3];
ret = [OFMutableData dataWithCapacity: count + 3];
prefix = 0xC7;
[ret addItem: &prefix];
length = (uint8_t)count;
[ret addItem: &length];
[ret addItem: &_type];
} else if (count < 0x10000) {
uint16_t length;
ret = [OFDataArray dataArrayWithCapacity: count + 4];
ret = [OFMutableData dataWithCapacity: count + 4];
prefix = 0xC8;
[ret addItem: &prefix];
length = OF_BSWAP16_IF_LE((uint16_t)count);
[ret addItems: &length
count: 2];
[ret addItem: &_type];
} else {
uint32_t length;
ret = [OFDataArray dataArrayWithCapacity: count + 6];
ret = [OFMutableData dataWithCapacity: count + 6];
prefix = 0xC9;
[ret addItem: &prefix];
length = OF_BSWAP32_IF_LE((uint32_t)count);
[ret addItems: &length
count: 4];
[ret addItem: &_type];
}
[ret addItems: [_data items]
count: [_data count]];
[ret makeImmutable];
return ret;
}
- (OFString *)description
{
return [OFString stringWithFormat: @"<OFMessagePackExtension: %d, %@>",
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OF_HASH_FINALIZE(hash);
return hash;
}
- copy
{
OFMessagePackExtension *ret;
OFDataArray *data;
data = [_data copy];
@try {
ret = [[OFMessagePackExtension alloc] initWithType: _type
data: data];
} @finally {
[data release];
}
ret;
|