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9955a7c49c
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@2769 72102866-910b-0410-8b05-ffd578937521
364 lines
9.3 KiB
Objective-C
364 lines
9.3 KiB
Objective-C
/* Class for serialization in GNUStep
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Copyright (C) 1997 Free Software Foundation, Inc.
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Written by: Richard Frith-Macdoanld <richard@brainstorm.co.uk>
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Date: August 1997
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This file is part of the GNUstep Base Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <config.h>
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#include <gnustep/base/preface.h>
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#include <Foundation/NSData.h>
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#include <Foundation/NSDictionary.h>
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#include <Foundation/NSArray.h>
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#include <Foundation/NSString.h>
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#include <Foundation/NSException.h>
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@class NSGMutableCString;
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@class NSGCString;
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#ifdef UNICODE
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@class NSGString;
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@class NSGMutableString;
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#endif
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@class NSGArray;
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@class NSGMutableArray;
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@class NSGDictionary;
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@class NSGMutableDictionary;
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typedef enum {
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ST_CSTRING,
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ST_MCSTRING,
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ST_STRING,
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ST_MSTRING,
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ST_DATA,
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ST_MDATA,
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ST_ARRAY,
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ST_MARRAY,
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ST_DICT,
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ST_MDICT
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} SerializerType;
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@implementation NSSerializer
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+ (NSData*) serializePropertyList: (id)propertyList
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{
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NSMutableData* d = [NSMutableData new];
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[self serializePropertyList: propertyList intoData: d];
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return [d autorelease];
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}
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+ (void) serializePropertyList: (id)propertyList
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intoData: (NSMutableData*)d
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{
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NSSerializer* s = [self new];
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[d serializeDataAt: &propertyList
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ofObjCType: @encode(id)
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context: s];
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[s release];
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}
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- (void) deserializeObjectAt: (id*)object
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ofObjCType: (const char *)type
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fromData: (NSData*)data
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atCursor: (unsigned*)cursor
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{
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[self notImplemented:_cmd];
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}
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- (void) serializeObjectAt: (id*)objPtr
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ofObjCType: (const char *)type
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intoData: (NSMutableData*)data
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{
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id object;
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assert(objPtr != 0);
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assert(type == @encode(id));
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object = *objPtr;
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if ([object isKindOfClass: [NSMutableData class]]) {
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[data serializeInt: ST_MDATA];
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[data serializeInt: [object length]];
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[data appendBytes: [object bytes] length: [object length]];
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}
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else if ([object isKindOfClass: [NSData class]]) {
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[data serializeInt: ST_DATA];
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[data serializeInt: [object length]];
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[data appendBytes: [object bytes] length: [object length]];
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}
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else if ([object isKindOfClass: [NSGMutableCString class]]) {
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[data serializeInt: ST_MCSTRING];
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[data serializeInt: [object cStringLength]];
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[data appendBytes: [object cString] length: [object cStringLength]];
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}
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else if ([object isKindOfClass: [NSGCString class]]) {
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[data serializeInt: ST_CSTRING];
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[data serializeInt: [object cStringLength]];
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[data appendBytes: [object cString] length: [object cStringLength]];
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}
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#ifdef UNICODE
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else if ([object isKindOfClass: [NSMutableString class]] ||
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[object isKindOfClass: [NSGMutableString class]]) {
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[data serializeInt: ST_MSTRING];
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[data serializeInt: [object cStringLength]];
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[data appendBytes: [object cString] length: [object cStringLength]];
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}
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else if ([object isKindOfClass: [NSString class]] ||
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[object isKindOfClass: [NSGString class]]) {
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[data serializeInt: ST_STRING];
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[data serializeInt: [object cStringLength]];
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[data appendBytes: [object cString] length: [object cStringLength]];
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}
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#endif
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else if ([object isKindOfClass: [NSMutableArray class]] ||
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[object isKindOfClass: [NSGMutableArray class]]) {
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unsigned int i;
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[data serializeInt: ST_MARRAY];
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[data serializeInt: [object count]];
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for (i = 0; i < [object count]; i++) {
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id o = [object objectAtIndex: i];
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[data serializeDataAt: &o
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ofObjCType: @encode(id)
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context: self];
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}
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}
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else if ([object isKindOfClass: [NSArray class]] ||
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[object isKindOfClass: [NSGArray class]]) {
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unsigned int i;
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[data serializeInt: ST_ARRAY];
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[data serializeInt: [object count]];
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for (i = 0; i < [object count]; i++) {
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id o = [object objectAtIndex: i];
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[data serializeDataAt: &o
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ofObjCType: @encode(id)
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context: self];
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}
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}
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else if ([object isKindOfClass: [NSMutableDictionary class]] ||
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[object isKindOfClass: [NSGMutableDictionary class]]) {
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NSEnumerator* e = [object keyEnumerator];
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id k;
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[data serializeInt: ST_MDICT];
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[data serializeInt: [object count]];
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while ((k = [e nextObject]) != nil) {
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id o = [object objectForKey:k];
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[data serializeDataAt: &k
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ofObjCType: @encode(id)
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context: self];
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[data serializeDataAt: &o
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ofObjCType: @encode(id)
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context: self];
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}
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}
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else if ([object isKindOfClass: [NSDictionary class]] ||
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[object isKindOfClass: [NSGDictionary class]]) {
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NSEnumerator* e = [object keyEnumerator];
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id k;
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[data serializeInt: ST_DICT];
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[data serializeInt: [object count]];
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while ((k = [e nextObject]) != nil) {
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id o = [object objectForKey:k];
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[data serializeDataAt: &k
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ofObjCType: @encode(id)
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context: self];
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[data serializeDataAt: &o
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ofObjCType: @encode(id)
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context: self];
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}
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}
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else {
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[NSException raise: NSGenericException
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format: @"Unknown class in property list"];
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}
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}
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@end
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@implementation NSDeserializer
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+ (id) deserializePropertyListFromData: (NSData*)data
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atCursor: (unsigned int*)cursor
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mutableContainers: (BOOL)flag
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{
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NSDeserializer* s = [self new];
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id o = nil;
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s->mutableContainer = flag;
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[data deserializeDataAt: &o
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ofObjCType: @encode(id)
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atCursor: cursor
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context: s];
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[s release];
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return o;
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}
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+ (id) deserializePropertyListFromData: (NSData*)data
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mutableContainers: (BOOL)flag
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{
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unsigned int cursor = 0;
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return [self deserializePropertyListFromData: data
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atCursor: &cursor
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mutableContainers: flag];
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}
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- (void) deserializeObjectAt: (id*)object
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ofObjCType: (const char *)type
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fromData: (NSData*)data
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atCursor: (unsigned*)cursor
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{
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SerializerType code;
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unsigned int size;
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assert(type == @encode(id));
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code = (SerializerType)[data deserializeIntAtCursor: cursor];
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size = (unsigned int)[data deserializeIntAtCursor: cursor];
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switch (code) {
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case ST_MDATA:
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{
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NSMutableData* d = [NSMutableData dataWithCapacity: size];
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void* b = [d mutableBytes];
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[data deserializeBytes: b length: size atCursor: cursor];
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*object = d;
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break;
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}
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case ST_DATA:
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{
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NSMutableData* d;
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void* b = objc_malloc(size);
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[data deserializeBytes: b length: size atCursor: cursor];
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d = [NSData dataWithBytesNoCopy: b length: size];
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*object = d;
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break;
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}
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case ST_MCSTRING:
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case ST_MSTRING:
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{
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NSMutableString* s;
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char* b = objc_malloc(size+1);
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b[size] = '\0';
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[data deserializeBytes: b length: size atCursor: cursor];
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s = [[[NSMutableString alloc] initWithCStringNoCopy: b
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length: size
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freeWhenDone: YES]
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autorelease];
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*object = s;
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break;
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}
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case ST_CSTRING:
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case ST_STRING:
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{
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NSString* s;
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char* b = objc_malloc(size+1);
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b[size] = '\0';
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[data deserializeBytes: b length: size atCursor: cursor];
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s = [[[NSString alloc] initWithCStringNoCopy: b
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length: size
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freeWhenDone: YES] autorelease];
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*object = s;
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break;
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}
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case ST_MARRAY:
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case ST_ARRAY:
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{
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id *objects = objc_malloc(size*sizeof(id));
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id a;
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int i;
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for (i = 0; i < size; i++) {
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[data deserializeDataAt: &objects[i]
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ofObjCType: type
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atCursor: cursor
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context: self];
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}
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if (code == ST_MARRAY || mutableContainer) {
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a = [[NSMutableArray alloc] initWithObjects: objects
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count: size];
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}
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else {
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a = [[NSArray alloc] initWithObjects: objects
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count: size];
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}
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objc_free(objects);
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[a autorelease];
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*object = a;
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break;
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}
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case ST_MDICT:
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case ST_DICT:
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{
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id *keys = objc_malloc(size*sizeof(id));
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id *objects = objc_malloc(size*sizeof(id));
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id d;
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int i;
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for (i = 0; i < size; i++) {
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[data deserializeDataAt: &keys[i]
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ofObjCType: type
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atCursor: cursor
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context: self];
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[data deserializeDataAt: &objects[i]
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ofObjCType: type
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atCursor: cursor
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context: self];
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}
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if (code == ST_MDICT || mutableContainer) {
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d = [NSMutableDictionary dictionaryWithObjects: objects
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forKeys: keys
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count: size];
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}
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else {
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d = [NSDictionary dictionaryWithObjects: objects
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forKeys: keys
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count: size];
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}
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objc_free(keys);
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objc_free(objects);
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*object = d;
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break;
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}
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default:
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[NSException raise: NSGenericException
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format: @"Unknown class in property list"];
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}
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}
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- (void) serializeObjectAt: (id*)object
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ofObjCType: (const char *)type
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intoData: (NSMutableData*)data
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{
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[self notImplemented:_cmd];
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}
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@end
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