/*
* Copyright (c) 2008 - 2009
* Jonathan Schleifer <js@webkeks.org>
*
* 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 included in
* the packaging of this file.
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#import "OFDataArray.h"
#import "OFExceptions.h"
#import "macros.h"
#ifdef _WIN32
#include <windows.h>
#endif
static int lastpagebyte = 0;
@implementation OFDataArray
+ dataArrayWithItemSize: (size_t)is
{
return [[[self alloc] initWithItemSize: is] autorelease];
}
- init
{
@throw [OFNotImplementedException newWithClass: isa
selector: _cmd];
}
- initWithItemSize: (size_t)is
{
Class c;
self = [super init];
if (is == 0) {
c = isa;
[super dealloc];
@throw [OFInvalidArgumentException newWithClass: c
selector: _cmd];
}
data = NULL;
itemsize = is;
return self;
}
- (size_t)count
{
return count;
}
- (size_t)itemsize
{
return itemsize;
}
- (void*)cArray
{
return data;
}
- (void*)itemAtIndex: (size_t)index
{
if (index >= count)
@throw [OFOutOfRangeException newWithClass: isa];
return data + index * itemsize;
}
- (void*)firstItem
{
if (data == NULL || count == 0)
return NULL;
return data;
}
- (void*)lastItem
{
if (data == NULL || count == 0)
return NULL;
return data + (count - 1) * itemsize;
}
- addItem: (void*)item
{
if (SIZE_MAX - count < 1)
@throw [OFOutOfRangeException newWithClass: isa];
data = [self resizeMemory: data
toNItems: count + 1
withSize: itemsize];
memcpy(data + count * itemsize, item, itemsize);
count++;
return self;
}
- addItem: (void*)item
atIndex: (size_t)index
{
return [self addNItems: 1
fromCArray: item
atIndex: index];
}
- addNItems: (size_t)nitems
fromCArray: (void*)carray
{
if (nitems > SIZE_MAX - count)
@throw [OFOutOfRangeException newWithClass: isa];
data = [self resizeMemory: data
toNItems: count + nitems
withSize: itemsize];
memcpy(data + count * itemsize, carray, nitems * itemsize);
count += nitems;
return self;
}
- addNItems: (size_t)nitems
fromCArray: (void*)carray
atIndex: (size_t)index
{
if (nitems > SIZE_MAX - count)
@throw [OFOutOfRangeException newWithClass: isa];
data = [self resizeMemory: data
toNItems: count + nitems
withSize: itemsize];
memmove(data + (index + nitems) * itemsize, data + index * itemsize,
(count - index) * itemsize);
memcpy(data + index * itemsize, carray, nitems * itemsize);
count += nitems;
return self;
}
- removeItemAtIndex: (size_t)index
{
return [self removeNItems: 1
atIndex: index];
}
- removeNItems: (size_t)nitems
{
if (nitems > count)
@throw [OFOutOfRangeException newWithClass: isa];
count -= nitems;
@try {
data = [self resizeMemory: data
toNItems: count
withSize: itemsize];
} @catch (OFOutOfMemoryException *e) {
/* We don't really care, as we only made it smaller */
[e dealloc];
}
return self;
}
- removeNItems: (size_t)nitems
atIndex: (size_t)index
{
if (nitems > count)
@throw [OFOutOfRangeException newWithClass: isa];
memmove(data + index * itemsize, data + (index + nitems) * itemsize,
(count - index - nitems) * itemsize);
count -= nitems;
@try {
data = [self resizeMemory: data
toNItems: count
withSize: itemsize];
} @catch (OFOutOfMemoryException *e) {
/* We don't really care, as we only made it smaller */
[e dealloc];
}
return self;
}
- (id)copy
{
OFDataArray *new = [[OFDataArray alloc] initWithItemSize: itemsize];
[new addNItems: count
fromCArray: data];
return new;
}
- (BOOL)isEqual: (OFObject*)obj
{
if (![obj isKindOfClass: [OFDataArray class]])
return NO;
if ([(OFDataArray*)obj count] != count ||
[(OFDataArray*)obj itemsize] != itemsize)
return NO;
if (memcmp([(OFDataArray*)obj cArray], data, count * itemsize))
return NO;
return YES;
}
- (of_comparison_result_t)compare: (OFDataArray*)ary
{
int cmp;
size_t ary_count, min_count;
if (![ary isKindOfClass: [OFDataArray class]])
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
if ([ary itemsize] != itemsize)
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
ary_count = [ary count];
min_count = (count > ary_count ? ary_count : count);
if ((cmp = memcmp(data, [ary cArray], min_count * itemsize)) == 0) {
if (count > ary_count)
return OF_ORDERED_DESCENDING;
if (count < ary_count)
return OF_ORDERED_ASCENDING;
return OF_ORDERED_SAME;
}
if (cmp > 0)
return OF_ORDERED_DESCENDING;
else
return OF_ORDERED_ASCENDING;
}
- (uint32_t)hash
{
uint32_t hash;
size_t i;
OF_HASH_INIT(hash);
for (i = 0; i < count * itemsize; i++)
OF_HASH_ADD(hash, ((char*)data)[i]);
OF_HASH_FINALIZE(hash);
return hash;
}
@end
@implementation OFBigDataArray
- initWithItemSize: (size_t)is
{
self = [super initWithItemSize: is];
if (lastpagebyte == 0) {
#ifndef _WIN32
if ((lastpagebyte = sysconf(_SC_PAGESIZE)) == -1)
lastpagebyte = 4096;
lastpagebyte--;
#else
SYSTEM_INFO si;
GetSystemInfo(&si);
lastpagebyte = si.dwPageSize - 1;
#endif
}
return self;
}
- addItem: (void*)item
{
size_t nsize;
if (SIZE_MAX - count < 1 || count + 1 > SIZE_MAX / itemsize)
@throw [OFOutOfRangeException newWithClass: isa];
nsize = ((count + 1) * itemsize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toSize: nsize];
memcpy(data + count * itemsize, item, itemsize);
count++;
size = nsize;
return self;
}
- addNItems: (size_t)nitems
fromCArray: (void*)carray
{
size_t nsize;
if (nitems > SIZE_MAX - count || count + nitems > SIZE_MAX / itemsize)
@throw [OFOutOfRangeException newWithClass: isa];
nsize = ((count + nitems) * itemsize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toSize: nsize];
memcpy(data + count * itemsize, carray, nitems * itemsize);
count += nitems;
size = nsize;
return self;
}
- addNItems: (size_t)nitems
fromCArray: (void*)carray
atIndex: (size_t)index
{
size_t nsize;
if (nitems > SIZE_MAX - count || count + nitems > SIZE_MAX / itemsize)
@throw [OFOutOfRangeException newWithClass: isa];
nsize = ((count + nitems) * itemsize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toNItems: nsize
withSize: itemsize];
memmove(data + (index + nitems) * itemsize, data + index * itemsize,
(count - index) * itemsize);
memcpy(data + index * itemsize, carray, nitems * itemsize);
count += nitems;
size = nsize;
return self;
}
- removeNItems: (size_t)nitems
{
size_t nsize;
if (nitems > count)
@throw [OFOutOfRangeException newWithClass: isa];
count -= nitems;
nsize = (count * itemsize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toSize: nsize];
size = nsize;
return self;
}
- removeNItems: (size_t)nitems
atIndex: (size_t)index
{
size_t nsize;
if (nitems > count)
@throw [OFOutOfRangeException newWithClass: isa];
memmove(data + index * itemsize, data + (index + nitems) * itemsize,
(count - index - nitems) * itemsize);
count -= nitems;
nsize = (count * itemsize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toSize: nsize];
size = nsize;
return self;
}
- (id)copy
{
OFDataArray *new = [[OFBigDataArray alloc] initWithItemSize: itemsize];
[new addNItems: count
fromCArray: data];
return new;
}
@end