NetNewsWire/ParserObjc/Sources/ParserObjC/RSParserInternal.m

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//
// RSParserInternal.m
// RSParser
//
// Created by Brent Simmons on 12/26/16.
// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
//
#import "RSParserInternal.h"
#import <CommonCrypto/CommonDigest.h>
static BOOL RSParserIsNil(id obj) {
return obj == nil || obj == [NSNull null];
}
BOOL RSParserObjectIsEmpty(id obj) {
if (RSParserIsNil(obj)) {
return YES;
}
if ([obj respondsToSelector:@selector(count)]) {
return [obj count] < 1;
}
if ([obj respondsToSelector:@selector(length)]) {
return [obj length] < 1;
}
return NO; /*Shouldn't get here very often.*/
}
BOOL RSParserStringIsEmpty(NSString *s) {
return RSParserIsNil(s) || s.length < 1;
}
@implementation NSDictionary (RSParserInternal)
- (nullable id)rsparser_objectForCaseInsensitiveKey:(NSString *)key {
id obj = self[key];
if (obj) {
return obj;
}
for (NSString *oneKey in self.allKeys) {
if ([oneKey isKindOfClass:[NSString class]] && [key caseInsensitiveCompare:oneKey] == NSOrderedSame) {
return self[oneKey];
}
}
return nil;
}
@end