Remove IOS7 polyfill for containsString

Author: Abraham Przewodnik

ios/IOS7Polyfill.h

@@ -45,7 +45,6 @@
 		A19B48241D98102400E6868A /* RNFetchBlobProgress.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RNFetchBlobProgress.m; sourceTree = "<group>"; };
 		A1AAE2971D300E3E0051D11C /* RNFetchBlobReqBuilder.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RNFetchBlobReqBuilder.h; sourceTree = "<group>"; };
 		A1AAE2981D300E4D0051D11C /* RNFetchBlobReqBuilder.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RNFetchBlobReqBuilder.m; sourceTree = "<group>"; };
-		A1F950181D7E9134002A95A6 /* IOS7Polyfill.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IOS7Polyfill.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -71,7 +70,6 @@
 			children = (
 				A19B48241D98102400E6868A /* RNFetchBlobProgress.m */,
 				A19B48231D98100800E6868A /* RNFetchBlobProgress.h */,
-				A1F950181D7E9134002A95A6 /* IOS7Polyfill.h */,
 				A1AAE2981D300E4D0051D11C /* RNFetchBlobReqBuilder.m */,
 				A1AAE2971D300E3E0051D11C /* RNFetchBlobReqBuilder.h */,
 				A158F42E1D0539CE006FFD38 /* RNFetchBlobNetwork.h */,

ios/RNFetchBlob.xcodeproj/project.pbxproj

@@ -10,7 +10,6 @@
 #import "RNFetchBlob.h"
 #import "RNFetchBlobFS.h"
 #import "RNFetchBlobConst.h"
-#import "IOS7Polyfill.h"
 @import AssetsLibrary;
 
 #import <CommonCrypto/CommonDigest.h>
@@ -375,7 +374,7 @@ + (void) writeFile:(NSString *)path
 
         NSFileHandle *fileHandle = [NSFileHandle fileHandleForWritingAtPath:path];
         NSData * content = nil;
-        if([encoding RNFBContainsString:@"base64"]) {
+        if([encoding containsString:@"base64"]) {
             content = [[NSData alloc] initWithBase64EncodedString:data options:0];
         }
         else if([encoding isEqualToString:@"uri"]) {

ios/RNFetchBlobFS.m

@@ -11,7 +11,6 @@
 #import "RNFetchBlobNetwork.h"
 #import "RNFetchBlobConst.h"
 #import "RNFetchBlobFS.h"
-#import "IOS7Polyfill.h"
 
 #if __has_include(<React/RCTAssert.h>)
 #import <React/RCTLog.h>
@@ -117,7 +116,7 @@ +(void) buildOctetRequest:(NSDictionary *)options
                     orgPath = [RNFetchBlobFS getPathOfAsset:orgPath];
                     if([orgPath hasPrefix:AL_PREFIX])
                     {
-                        
+
                         [RNFetchBlobFS readFile:orgPath encoding:nil onComplete:^(id content, NSString* code, NSString * err) {
                             if(err != nil)
                             {
@@ -131,7 +130,7 @@ +(void) buildOctetRequest:(NSDictionary *)options
                                 onComplete(request, [((NSData *)content) length]);
                             }
                         }];
-                        
+
                         return;
                     }
                     size = [[[NSFileManager defaultManager] attributesOfItemAtPath:orgPath error:nil] fileSize];
@@ -150,7 +149,7 @@ +(void) buildOctetRequest:(NSDictionary *)options
 
                     __block NSString * cType = [[self class]getHeaderIgnoreCases:@"content-type" fromHeaders:mheaders];
                     // when content-type is application/octet* decode body string using BASE64 decoder
-                    if([[cType lowercaseString] hasPrefix:@"application/octet"] || [[cType lowercaseString] RNFBContainsString:@";base64"])
+                    if([[cType lowercaseString] hasPrefix:@"application/octet"] || [[cType lowercaseString] containsString:@";base64"])
                     {
                         __block NSString * ncType = [[cType stringByReplacingOccurrencesOfString:@";base64" withString:@""]stringByReplacingOccurrencesOfString:@";BASE64" withString:@""];
                         if([mheaders valueForKey:@"content-type"] != nil)

ios/RNFetchBlobReqBuilder.m

@@ -12,7 +12,6 @@
 #import "RNFetchBlobConst.h"
 #import "RNFetchBlobReqBuilder.h"
 
-#import "IOS7Polyfill.h"
 #import <CommonCrypto/CommonDigest.h>
 
 
@@ -214,20 +213,20 @@ - (void) URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dat
 
             return;
         } else {
-            self.isServerPush = [[respCType lowercaseString] RNFBContainsString:@"multipart/x-mixed-replace;"];
+            self.isServerPush = [[respCType lowercaseString] containsString:@"multipart/x-mixed-replace;"];
         }
 
         if(respCType)
         {
             NSArray * extraBlobCTypes = [options objectForKey:CONFIG_EXTRA_BLOB_CTYPE];
 
-            if ([respCType RNFBContainsString:@"text/"]) {
+            if ([respCType containsString:@"text/"]) {
                 respType = @"text";
-            } else if ([respCType RNFBContainsString:@"application/json"]) {
+            } else if ([respCType containsString:@"application/json"]) {
                 respType = @"json";
             } else if(extraBlobCTypes) { // If extra blob content type is not empty, check if response type matches
                 for (NSString * substr in extraBlobCTypes) {
-                    if ([respCType RNFBContainsString:[substr lowercaseString]]) {
+                    if ([respCType containsString:[substr lowercaseString]]) {
                         respType = @"blob";
                         respFile = YES;
                         destPath = [RNFetchBlobFS getTempPath:taskId withExtension:nil];
@@ -285,7 +284,7 @@ - (void) URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dat
 
             // if not set overwrite in options, defaults to TRUE
             BOOL overwrite = [options valueForKey:@"overwrite"] == nil ? YES : [[options valueForKey:@"overwrite"] boolValue];
-            BOOL appendToExistingFile = [destPath RNFBContainsString:@"?append=true"];
+            BOOL appendToExistingFile = [destPath containsString:@"?append=true"];
 
             appendToExistingFile = !overwrite;