/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#include <limits.h>
#include <string.h>
#import "OFConcreteMutableData.h"
#import "OFConcreteData.h"
#import "OFInvalidArgumentException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
@implementation OFConcreteMutableData
+ (void)initialize
{
if (self == [OFConcreteMutableData class])
[self inheritMethodsFromClass: [OFConcreteData class]];
}
- (instancetype)initWithItemSize: (size_t)itemSize capacity: (size_t)capacity
{
self = [super init];
@try {
if (itemSize == 0)
@throw [OFInvalidArgumentException exception];
_items = OFAllocMemory(capacity, itemSize);
_itemSize = itemSize;
_capacity = capacity;
_freeWhenDone = true;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (instancetype)initWithItemsNoCopy: (void *)items
count: (size_t)count
itemSize: (size_t)itemSize
freeWhenDone: (bool)freeWhenDone
{
self = [self initWithItems: items count: count itemSize: itemSize];
if (freeWhenDone)
OFFreeMemory(items);
return self;
}
- (void *)mutableItems
{
return _items;
}
- (void)addItem: (const void *)item
{
if (SIZE_MAX - _count < 1)
@throw [OFOutOfRangeException exception];
if (_count + 1 > _capacity) {
_items = OFResizeMemory(_items, _count + 1, _itemSize);
_capacity = _count + 1;
}
memcpy(_items + _count * _itemSize, item, _itemSize);
_count++;
}
- (void)addItems: (const void *)items count: (size_t)count
{
if (count > SIZE_MAX - _count)
@throw [OFOutOfRangeException exception];
if (_count + count > _capacity) {
_items = OFResizeMemory(_items, _count + count, _itemSize);
_capacity = _count + count;
}
memcpy(_items + _count * _itemSize, items, count * _itemSize);
_count += count;
}
- (void)insertItems: (const void *)items
atIndex: (size_t)idx
count: (size_t)count
{
if (count > SIZE_MAX - _count || idx > _count)
@throw [OFOutOfRangeException exception];
if (_count + count > _capacity) {
_items = OFResizeMemory(_items, _count + count, _itemSize);
_capacity = _count + count;
}
memmove(_items + (idx + count) * _itemSize, _items + idx * _itemSize,
(_count - idx) * _itemSize);
memcpy(_items + idx * _itemSize, items, count * _itemSize);
_count += count;
}
- (void)increaseCountBy: (size_t)count
{
if (count > SIZE_MAX - _count)
@throw [OFOutOfRangeException exception];
if (_count + count > _capacity) {
_items = OFResizeMemory(_items, _count + count, _itemSize);
_capacity = _count + count;
}
memset(_items + _count * _itemSize, '\0', count * _itemSize);
_count += count;
}
- (void)removeItemsInRange: (OFRange)range
{
if (range.length > SIZE_MAX - range.location ||
range.location + range.length > _count)
@throw [OFOutOfRangeException exception];
memmove(_items + range.location * _itemSize,
_items + (range.location + range.length) * _itemSize,
(_count - range.location - range.length) * _itemSize);
_count -= range.length;
@try {
_items = OFResizeMemory(_items, _count, _itemSize);
_capacity = _count;
} @catch (OFOutOfMemoryException *e) {
/* We don't really care, as we only made it smaller */
}
}
- (void)removeLastItem
{
if (_count == 0)
return;
_count--;
@try {
_items = OFResizeMemory(_items, _count, _itemSize);
_capacity = _count;
} @catch (OFOutOfMemoryException *e) {
/* We don't care, as we only made it smaller */
}
}
- (void)removeAllItems
{
OFFreeMemory(_items);
_items = NULL;
_count = 0;
_capacity = 0;
}
- (void)makeImmutable
{
if (_capacity != _count) {
@try {
_items = OFResizeMemory(_items, _count, _itemSize);
_capacity = _count;
} @catch (OFOutOfMemoryException *e) {
/* We don't care, as we only made it smaller */
}
}
object_setClass(self, [OFConcreteData class]);
}
@end