/*
* 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 "OFInvalidArgumentException.h"
#import "OFInvalidEncodingException.h"
#import "OFNotImplementedException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "base64.h"
#import "macros.h"
/* References for static linking */
void _references_to_categories_of_OFDataArray(void)
{
_OFDataArray_Hashing_reference = 1;
};
@implementation OFDataArray
+ dataArrayWithItemSize: (size_t)itemSize
{
return [[[self alloc] initWithItemSize: itemSize] autorelease];
}
+ dataArrayWithContentsOfFile: (OFString*)path
{
return [[[self alloc] initWithContentsOfFile: path] autorelease];
}
+ dataArrayWithBase64EncodedString: (OFString*)string
{
return [[[self alloc] initWithBase64EncodedString: string] autorelease];
}
- init
{
Class c = isa;
[self release];
@throw [OFNotImplementedException newWithClass: c
selector: _cmd];
}
- initWithItemSize: (size_t)itemSize_
{
self = [super init];
@try {
if (itemSize_ == 0)
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
itemSize = itemSize_;
data = NULL;
} @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;
data = NULL;
@try {
char *buffer = [self allocMemoryWithSize: of_pagesize];
while (![file isAtEndOfStream]) {
size_t length;
length = [file readNBytes: of_pagesize
intoBuffer: buffer];
[self addNItems: length
fromCArray: buffer];
}
[self freeMemory: buffer];
} @finally {
[file release];
}
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- initWithBase64EncodedString: (OFString*)string
{
self = [super init];
itemSize = 1;
data = NULL;
if (!of_base64_decode(self, [string cString], [string cStringLength])) {
Class c = isa;
[self release];
@throw [OFInvalidEncodingException newWithClass: c];
}
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: (const 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: (const void*)item
atIndex: (size_t)index
{
[self addNItems: 1
fromCArray: item
atIndex: index];
}
- (void)addNItems: (size_t)nItems
fromCArray: (const 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: (const 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 release];
}
}
- (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 release];
}
}
- copy
{
OFDataArray *copy = [[OFDataArray alloc] initWithItemSize: itemSize];
[copy addNItems: count
fromCArray: data];
return copy;
}
- (BOOL)isEqual: (id)object
{
OFDataArray *otherDataArray;
if (![object isKindOfClass: [OFDataArray class]])
return NO;
otherDataArray = (OFDataArray*)object;
if ([otherDataArray count] != count ||
[otherDataArray itemSize] != itemSize)
return NO;
if (memcmp([otherDataArray cArray], data, count * itemSize))
return NO;
return YES;
}
- (of_comparison_result_t)compare: (id)object
{
OFDataArray *otherDataArray;
int comparison;
size_t otherCount, minimumCount;
if (![object isKindOfClass: [OFDataArray class]])
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
otherDataArray = (OFDataArray*)object;
if ([otherDataArray itemSize] != itemSize)
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
otherCount = [otherDataArray count];
minimumCount = (count > otherCount ? otherCount : count);
if ((comparison = memcmp(data, [otherDataArray cArray],
minimumCount * itemSize)) == 0) {
if (count > otherCount)
return OF_ORDERED_DESCENDING;
if (count < otherCount)
return OF_ORDERED_ASCENDING;
return OF_ORDERED_SAME;
}
if (comparison > 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;
}
- (OFString*)stringByBase64Encoding
{
return of_base64_encode(data, count * itemSize);
}
@end
@implementation OFBigDataArray
- (void)addItem: (const void*)item
{
size_t newSize, lastPageByte;
if (SIZE_MAX - count < 1 || count + 1 > SIZE_MAX / itemSize)
@throw [OFOutOfRangeException newWithClass: isa];
lastPageByte = of_pagesize - 1;
newSize = ((count + 1) * itemSize + lastPageByte) & ~lastPageByte;
if (size != newSize)
data = [self resizeMemory: data
toSize: newSize];
memcpy(data + count * itemSize, item, itemSize);
count++;
size = newSize;
}
- (void)addNItems: (size_t)nItems
fromCArray: (const void*)cArray
{
size_t newSize, lastPageByte;
if (nItems > SIZE_MAX - count || count + nItems > SIZE_MAX / itemSize)
@throw [OFOutOfRangeException newWithClass: isa];
lastPageByte = of_pagesize - 1;
newSize = ((count + nItems) * itemSize + lastPageByte) & ~lastPageByte;
if (size != newSize)
data = [self resizeMemory: data
toSize: newSize];
memcpy(data + count * itemSize, cArray, nItems * itemSize);
count += nItems;
size = newSize;
}
- (void)addNItems: (size_t)nItems
fromCArray: (const void*)cArray
atIndex: (size_t)index
{
size_t newSize, lastPageByte;
if (nItems > SIZE_MAX - count || count + nItems > SIZE_MAX / itemSize)
@throw [OFOutOfRangeException newWithClass: isa];
lastPageByte = of_pagesize - 1;
newSize = ((count + nItems) * itemSize + lastPageByte) & ~lastPageByte;
if (size != newSize)
data = [self resizeMemory: data
toNItems: newSize
withSize: itemSize];
memmove(data + (index + nItems) * itemSize, data + index * itemSize,
(count - index) * itemSize);
memcpy(data + index * itemSize, cArray, nItems * itemSize);
count += nItems;
size = newSize;
}
- (void)removeNItems: (size_t)nItems
{
size_t newSize, lastPageByte;
if (nItems > count)
@throw [OFOutOfRangeException newWithClass: isa];
count -= nItems;
lastPageByte = of_pagesize - 1;
newSize = (count * itemSize + lastPageByte) & ~lastPageByte;
if (size != newSize)
data = [self resizeMemory: data
toSize: newSize];
size = newSize;
}
- (void)removeNItems: (size_t)nItems
atIndex: (size_t)index
{
size_t newSize, 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;
newSize = (count * itemSize + lastPageByte) & ~lastPageByte;
if (size != newSize)
data = [self resizeMemory: data
toSize: newSize];
size = newSize;
}
- copy
{
OFDataArray *copy = [[OFBigDataArray alloc] initWithItemSize: itemSize];
[copy addNItems: count
fromCArray: data];
return copy;
}
@end