tools/ROADAttributesCodeGenerator/ROADAttributesCodeGenerator/APIExtensions/NSMutableString+RFExtendedAPI.m

//
//  NSMutableString+RFExtendedAPI.m
//  ROADAttributesCodeGenerator
//
//  Copyright (c) 2014 EPAM Systems, Inc. All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are met:
//
//  Redistributions of source code must retain the above copyright notice, this
//  list of conditions and the following disclaimer.
//  Redistributions in binary form must reproduce the above copyright notice, this
//  list of conditions and the following disclaimer in the documentation and/or
//  other materials provided with the distribution.
//  Neither the name of the EPAM Systems, Inc.  nor the names of its contributors
//  may be used to endorse or promote products derived from this software without
//  specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
//  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
//  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
//  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
//  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
//  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
//  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
//  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//  See the NOTICE file and the LICENSE file distributed with this work
//  for additional information regarding copyright ownership and licensing


#import "NSMutableString+RFExtendedAPI.h"
#import <objc/runtime.h>
#import "NSString+RFExtendedAPI.h"



@implementation NSMutableString (RFExtendedAPI)

+ (void)load {
    SEL originalSelector = @selector(stringWithString:);
    SEL overrideSelector = @selector(rf_stringWithString:);
    Method originalMethod = class_getClassMethod([NSMutableString class], originalSelector);
    Method overrideMethod = class_getClassMethod([NSMutableString class], overrideSelector);
    method_exchangeImplementations(originalMethod, overrideMethod);
}

+ (instancetype)rf_stringWithString:(NSString *)string {
    if (!string) {
        return [[NSMutableString alloc] init];
    }

    return [self rf_stringWithString:string];
}

- (void)appendLine:(NSString *)aLineString {
    if ([NSString isNilOrEmpty:aLineString]) {
        return;
    }
    
    [self appendString:aLineString];
    [self appendString:@"\n"];
}

@end