/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012
* 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 "OFURL.h"
#import "OFHTTPRequest.h"
#import "OFXMLElement.h"
#import "OFAutoreleasePool.h"
#import "OFHTTPRequestFailedException.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
+ dataArray
{
return [[[self alloc] init] autorelease];
}
+ dataArrayWithItemSize: (size_t)itemSize
{
return [[[self alloc] initWithItemSize: itemSize] autorelease];
}
+ dataArrayWithContentsOfFile: (OFString*)path
{
return [[[self alloc] initWithContentsOfFile: path] autorelease];
}
+ dataArrayWithContentsOfURL: (OFURL*)URL
{
return [[[self alloc] initWithContentsOfURL: URL] autorelease];
}
+ dataArrayWithBase64EncodedString: (OFString*)string
{
return [[[self alloc] initWithBase64EncodedString: string] autorelease];
}
- init
{
self = [super init];
itemSize = 1;
return self;
}
- initWithItemSize: (size_t)itemSize_
{
self = [super init];
if (itemSize_ == 0) {
Class c = isa;
[self release];
@throw [OFInvalidArgumentException exceptionWithClass: c
selector: _cmd];
}
itemSize = itemSize_;
return self;
}
- initWithContentsOfFile: (OFString*)path
{
self = [super init];
@try {
OFFile *file = [[OFFile alloc] initWithPath: path
mode: @"rb"];
itemSize = 1;
@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;
}
- initWithContentsOfURL: (OFURL*)URL
{
OFAutoreleasePool *pool;
OFHTTPRequest *request;
OFHTTPRequestResult *result;
Class c;
c = isa;
[self release];
pool = [[OFAutoreleasePool alloc] init];
if ([[URL scheme] isEqual: @"file"]) {
self = [[c alloc] initWithContentsOfFile: [URL path]];
[pool release];
return self;
}
request = [OFHTTPRequest requestWithURL: URL];
result = [request perform];
if ([result statusCode] != 200)
@throw [OFHTTPRequestFailedException
exceptionWithClass: [request class]
HTTPRequest: request
result: result];
self = [[result data] retain];
[pool release];
return self;
}
- initWithBase64EncodedString: (OFString*)string
{
self = [super init];
itemSize = 1;
if (!of_base64_decode(self,
[string cStringWithEncoding: OF_STRING_ENCODING_ASCII],
[string cStringLengthWithEncoding: OF_STRING_ENCODING_ASCII])) {
Class c = isa;
[self release];
@throw [OFInvalidEncodingException exceptionWithClass: c];
}
return self;
}
- initWithSerialization: (OFXMLElement*)element
{
self = [super init];
itemSize = 1;
@try {
OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
OFString *stringValue;
if (![[element name] isEqual: [self className]] ||
![[element namespace] isEqual: OF_SERIALIZATION_NS])
@throw [OFInvalidArgumentException
exceptionWithClass: isa
selector: _cmd];
stringValue = [element stringValue];
if (!of_base64_decode(self,
[stringValue cStringWithEncoding: OF_STRING_ENCODING_ASCII],
[stringValue cStringLengthWithEncoding:
OF_STRING_ENCODING_ASCII]))
@throw [OFInvalidEncodingException
exceptionWithClass: isa];
[pool 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 exceptionWithClass: 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 exceptionWithClass: isa];
data = [self resizeMemory: data
toNItems: count + 1
ofSize: 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 exceptionWithClass: isa];
data = [self resizeMemory: data
toNItems: count + nItems
ofSize: 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 || index > count)
@throw [OFOutOfRangeException exceptionWithClass: isa];
data = [self resizeMemory: data
toNItems: count + nItems
ofSize: 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 exceptionWithClass: isa];
count -= nItems;
@try {
data = [self resizeMemory: data
toNItems: count
ofSize: itemSize];
} @catch (OFOutOfMemoryException *e) {
/* We don't really care, as we only made it smaller */
}
}
- (void)removeNItems: (size_t)nItems
atIndex: (size_t)index
{
if (nItems > count)
@throw [OFOutOfRangeException exceptionWithClass: isa];
memmove(data + index * itemSize, data + (index + nItems) * itemSize,
(count - index - nItems) * itemSize);
count -= nItems;
@try {
data = [self resizeMemory: data
toNItems: count
ofSize: itemSize];
} @catch (OFOutOfMemoryException *e) {
/* We don't really care, as we only made it smaller */
}
}
- (void)removeLastItem
{
if (count < 1)
@throw [OFOutOfRangeException exceptionWithClass: isa];
count--;
@try {
data = [self resizeMemory: data
toNItems: count
ofSize: itemSize];
} @catch (OFOutOfMemoryException *e) {
/* We don't care, as we only made it smaller */
}
}
- (void)removeAllItems
{
[self freeMemory: data];
data = NULL;
count = 0;
}
- copy
{
OFDataArray *copy = [[isa alloc] initWithItemSize: itemSize];
[copy addNItems: count
fromCArray: data];
return copy;
}
- (BOOL)isEqual: (id)object
{
OFDataArray *otherDataArray;
if (![object isKindOfClass: [OFDataArray class]])
return NO;
otherDataArray = 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 exceptionWithClass: isa
selector: _cmd];
otherDataArray = object;
if ([otherDataArray itemSize] != itemSize)
@throw [OFInvalidArgumentException exceptionWithClass: 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);
}
- (void)writeToFile: (OFString*)path
{
OFFile *file = [[OFFile alloc] initWithPath: path
mode: @"wb"];
@try {
[file writeNBytes: count * itemSize
fromBuffer: data];
} @finally {
[file release];
}
}
- (OFXMLElement*)XMLElementBySerializing
{
OFAutoreleasePool *pool;
OFXMLElement *element;
if (itemSize != 1)
@throw [OFNotImplementedException exceptionWithClass: isa
selector: _cmd];
pool = [[OFAutoreleasePool alloc] init];
element = [OFXMLElement
elementWithName: [self className]
namespace: OF_SERIALIZATION_NS
stringValue: of_base64_encode(data, count * itemSize)];
[element retain];
[pool release];
[element autorelease];
return element;
}
@end
@implementation OFBigDataArray
- (void)addItem: (const void*)item
{
size_t newSize, lastPageByte;
if (SIZE_MAX - count < 1 || count + 1 > SIZE_MAX / itemSize)
@throw [OFOutOfRangeException exceptionWithClass: 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 exceptionWithClass: 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 exceptionWithClass: isa];
lastPageByte = of_pagesize - 1;
newSize = ((count + nItems) * itemSize + lastPageByte) & ~lastPageByte;
if (size != newSize)
data = [self resizeMemory: data
toSize: newSize];
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 exceptionWithClass: 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 exceptionWithClass: 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;
}
- (void)removeLastItem
{
size_t newSize, lastPageByte;
if (count < 1)
@throw [OFOutOfRangeException exceptionWithClass: isa];
count--;
lastPageByte = of_pagesize - 1;
newSize = (count * itemSize + lastPageByte) & ~lastPageByte;
if (size != newSize) {
@try {
data = [self resizeMemory: data
toNItems: count
ofSize: newSize];
} @catch (OFOutOfMemoryException *e) {
/* We don't care, as we only made it smaller */
}
size = newSize;
}
}
- (void)removeAllItems
{
[self freeMemory: data];
data = NULL;
count = 0;
size = 0;
}
@end