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128 lines
3.9 KiB
Objective-C
128 lines
3.9 KiB
Objective-C
/** Permit handling JSON as plists, and writing Objective-C literals.
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Copyright (C) 2020 Free Software Foundation, Inc.
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Written by: Mingye Wang
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Created: feb 2020
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This file is part of the GNUstep Objective-C 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 Lesser 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 Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02111 USA.
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*/
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#import "NSPropertyList+PLUtil.h"
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#import "GNUstepBase/GSObjCRuntime.h"
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#import "Foundation/NSData.h"
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#import "Foundation/NSError.h"
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#import "Foundation/NSUserDefaults.h"
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#import "Foundation/NSJSONSerialization.h"
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static IMP originalRead = 0;
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static IMP originalWrite = 0;
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@implementation NSPropertyListSerialization (PLUtilAdditions)
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+ (NSData*) _pdataFromPropertyList: (id)aPropertyList
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format: (NSPropertyListFormat)aFormat
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errorDescription: (NSString **)anErrorString
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{
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NSError *myError = nil;
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NSData *dest;
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NSDictionary *loc;
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loc = [[NSUserDefaults standardUserDefaults] dictionaryRepresentation];
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switch (aFormat)
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{
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case NSPropertyListJSONFormat:
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dest = [NSJSONSerialization
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dataWithJSONObject: aPropertyList
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options: loc != nil ? NSJSONWritingPrettyPrinted : 0
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error: &myError];
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if (myError != nil && anErrorString != NULL)
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{
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*anErrorString = [myError description];
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}
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return dest;
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case NSPropertyListObjectiveCFormat:
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case NSPropertyListSwiftFormat:
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*anErrorString = @"Not implemented";
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return nil;
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default:
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return (*originalWrite)(self, _cmd, aPropertyList,
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aFormat, anErrorString);
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}
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}
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+ (id) _ppropertyListWithData: (NSData *)data
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options: (NSPropertyListReadOptions)anOption
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format: (NSPropertyListFormat *)aFormat
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error: (out NSError **)error;
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{
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NSError *myError = nil;
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NSPropertyListFormat format;
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NSJSONReadingOptions jsonOptions = NSJSONReadingAllowFragments;
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id prop;
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prop = (*originalRead)(self, _cmd, data, anOption, &format, &myError);
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if (nil == prop)
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{
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if (format == NSPropertyListOpenStepFormat
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|| format == NSPropertyListGNUstepFormat)
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// rescue as json when we know it is not anything else
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{
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switch (anOption)
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{
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case NSPropertyListMutableContainersAndLeaves:
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jsonOptions |= NSJSONReadingMutableLeaves;
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/* FALLTHROUGH */
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case NSPropertyListMutableContainers:
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jsonOptions |= NSJSONReadingMutableContainers;
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}
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format = NSPropertyListJSONFormat;
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prop = [NSJSONSerialization JSONObjectWithData: data
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options: jsonOptions
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error: &myError];
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}
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}
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if (error != NULL)
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{
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*error = myError;
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}
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if (aFormat != NULL)
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{
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*aFormat = format;
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}
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return prop;
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}
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+ (void) load
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{
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Method replacementRead;
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Method replacementWrite;
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replacementRead = class_getClassMethod(self,
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@selector(_ppropertyListWithData:options:format:error:));
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replacementWrite = class_getClassMethod(self,
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@selector(_pdataFromPropertyList:format:errorDescription:));
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originalRead = class_replaceMethod(object_getClass(self),
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@selector(propertyListWithData:options:format:error:),
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method_getImplementation(replacementRead),
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method_getTypeEncoding(replacementRead));
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originalWrite = class_replaceMethod(object_getClass(self),
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@selector(dataFromPropertyList:format:errorDescription:),
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method_getImplementation(replacementWrite),
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method_getTypeEncoding(replacementWrite));
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}
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@end
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