/*
* Copyright (c) 2008, 2009, 2010, 2011
* 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.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 <stdio.h>
#include <string.h>
#include <limits.h>
#import "OFDataArray.h"
#import "OFString.h"
#import "OFFile.h"
#import "OFExceptions.h"
#import "macros.h"
@implementation OFDataArray
+ dataArrayWithItemSize: (size_t)is
{
return [[[self alloc] initWithItemSize: is] autorelease];
}
+ dataArrayWithContentsOfFile: (OFString*)path
{
return [[[self alloc] initWithContentsOfFile: path] autorelease];
}
- init
{
Class c = isa;
[self release];
@throw [OFNotImplementedException newWithClass: c
selector: _cmd];
}
- initWithItemSize: (size_t)is
{
self = [super init];
@try {
if (is == 0)
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
data = NULL;
itemSize = is;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- initWithContentsOfFile: (OFString*)path
{
self = [super init];
@try {
OFFile *file = [[OFFile alloc] initWithPath: path
mode: @"rb"];
itemSize = 1;
@try {
char *buf = [self allocMemoryWithSize: of_pagesize];
while (![file isAtEndOfStream]) {
size_t size;
size = [file readNBytes: of_pagesize
intoBuffer: buf];
[self addNItems: size
fromCArray: buf];
}
[self freeMemory: buf];
} @finally {
[file release];
}
} @catch (id e) {
[self release];
@throw e;
}
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;
}
- (void)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++;
}
- (void)addItem: (void*)item
atIndex: (size_t)index
{
[self addNItems: 1
fromCArray: item
atIndex: index];
}
- (void)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;
}
- (void)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;
}
- (void)removeItemAtIndex: (size_t)index
{
[self removeNItems: 1
atIndex: index];
}
- (void)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];
}
}
- (void)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];
}
}
- copy
{
OFDataArray *new = [[OFDataArray alloc] initWithItemSize: itemSize];
[new addNItems: count
fromCArray: data];
return new;
}
- (BOOL)isEqual: (id)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: (id)obj
{
int cmp;
size_t ary_count, min_count;
if (![obj isKindOfClass: [OFDataArray class]])
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
if ([(OFDataArray*)obj itemSize] != itemSize)
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
ary_count = [(OFDataArray*)obj count];
min_count = (count > ary_count ? ary_count : count);
if ((cmp = memcmp(data, [(OFDataArray*)obj 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
- (void)addItem: (void*)item
{
size_t nsize, lastpagebyte;
if (SIZE_MAX - count < 1 || count + 1 > SIZE_MAX / itemSize)
@throw [OFOutOfRangeException newWithClass: isa];
lastpagebyte = of_pagesize - 1;
nsize = ((count + 1) * itemSize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toSize: nsize];
memcpy(data + count * itemSize, item, itemSize);
count++;
size = nsize;
}
- (void)addNItems: (size_t)nitems
fromCArray: (void*)carray
{
size_t nsize, lastpagebyte;
if (nitems > SIZE_MAX - count || count + nitems > SIZE_MAX / itemSize)
@throw [OFOutOfRangeException newWithClass: isa];
lastpagebyte = of_pagesize - 1;
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;
}
- (void)addNItems: (size_t)nitems
fromCArray: (void*)carray
atIndex: (size_t)index
{
size_t nsize, lastpagebyte;
if (nitems > SIZE_MAX - count || count + nitems > SIZE_MAX / itemSize)
@throw [OFOutOfRangeException newWithClass: isa];
lastpagebyte = of_pagesize - 1;
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;
}
- (void)removeNItems: (size_t)nitems
{
size_t nsize, lastpagebyte;
if (nitems > count)
@throw [OFOutOfRangeException newWithClass: isa];
count -= nitems;
lastpagebyte = of_pagesize - 1;
nsize = (count * itemSize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toSize: nsize];
size = nsize;
}
- (void)removeNItems: (size_t)nitems
atIndex: (size_t)index
{
size_t nsize, lastpagebyte;
if (nitems > count)
@throw [OFOutOfRangeException newWithClass: isa];
memmove(data + index * itemSize, data + (index + nitems) * itemSize,
(count - index - nitems) * itemSize);
count -= nitems;
lastpagebyte = of_pagesize - 1;
nsize = (count * itemSize + lastpagebyte) & ~lastpagebyte;
if (size != nsize)
data = [self resizeMemory: data
toSize: nsize];
size = nsize;
}
- copy
{
OFDataArray *new = [[OFBigDataArray alloc] initWithItemSize: itemSize];
[new addNItems: count
fromCArray: data];
return new;
}
@end