Add helper category method to NSString to determine when filePath is supported...

Add helper category method to NSString to determine when filePath is supported media/subtitle format or not

AspenProject/NSString+SupportedMedia.h

+//
+//  NSString+SupportedMedia.h
+//  VLC for iOS
+//
+//  Created by Gleb on 6/1/13.
+//  Copyright (c) 2013 VideoLAN. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface NSString (SupportedMedia)
+
+- (BOOL)isSupportedMediaFormat;
+- (BOOL)isSupportedSubtitleFormat;
+
+@end

AspenProject/NSString+SupportedMedia.m

+//
+//  NSString+SupportedMedia.m
+//  VLC for iOS
+//
+//  Created by Gleb on 6/1/13.
+//  Copyright (c) 2013 VideoLAN. All rights reserved.
+//
+
+#import "NSString+SupportedMedia.h"
+
+@implementation NSString (SupportedMedia)
+
+- (BOOL)isSupportedMediaFormat
+{
+    NSUInteger options = NSRegularExpressionSearch | NSCaseInsensitiveSearch;
+    return ([self rangeOfString:kSupportedFileExtensions options:options].location != NSNotFound);
+}
+
+- (BOOL)isSupportedSubtitleFormat
+{
+    NSUInteger options = NSRegularExpressionSearch | NSCaseInsensitiveSearch;
+    return ([self rangeOfString:kSupportedSubtitleFileExtensions options:options].location != NSNotFound);
+}
+
+@end

AspenProject/VLCAppDelegate.m

@@ -8,6 +8,7 @@
 
 #import "VLCAppDelegate.h"
 #import "DirectoryWatcher.h"
+#import "NSString+SupportedMedia.h"
 
 #import "VLCPlaylistViewController.h"
 #import "VLCMovieViewController.h"
@@ -151,7 +152,7 @@
     NSArray *foundFiles = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[self directoryPath] error:nil];
     NSMutableArray *matchedFiles = [NSMutableArray arrayWithCapacity:foundFiles.count];
     for (NSString *fileName in foundFiles) {
-        if ([fileName rangeOfString:kSupportedFileExtensions options:NSRegularExpressionSearch|NSCaseInsensitiveSearch].length != 0) {
+        if ([fileName isSupportedMediaFormat]) {
             [matchedFiles addObject:[[self directoryPath] stringByAppendingPathComponent:fileName]];
         }
     }
@@ -205,7 +206,7 @@
     NSMutableArray *filePaths = [NSMutableArray arrayWithCapacity:[foundFiles count]];
     NSURL *fileURL;
     for (NSString *fileName in foundFiles) {
-        if ([fileName rangeOfString:kSupportedFileExtensions options:NSRegularExpressionSearch|NSCaseInsensitiveSearch].length != 0) {
+        if ([fileName isSupportedMediaFormat]) {
             [filePaths addObject:[directoryPath stringByAppendingPathComponent:fileName]];
 
             /* exclude media files from backup (QA1719) */

AspenProject/VLCDropboxController.m

@@ -7,6 +7,7 @@
 //
 
 #import "VLCDropboxController.h"
+#import "NSString+SupportedMedia.h"
 #import "VLCAppDelegate.h"
 
 @interface VLCDropboxController ()
@@ -68,7 +69,7 @@
 #pragma mark - restClient delegate
 - (BOOL)_supportedFileExtension:(NSString *)filename
 {
-    if ([filename rangeOfString:kSupportedFileExtensions options:NSRegularExpressionSearch|NSCaseInsensitiveSearch].length != 0 || [filename rangeOfString:kSupportedSubtitleFileExtensions options:NSRegularExpressionSearch|NSCaseInsensitiveSearch].length != 0)
+    if ([filename isSupportedMediaFormat] || [filename isSupportedSubtitleFormat])
         return YES;
 
     return NO;

VLC for iOS.xcodeproj/project.pbxproj

@@ -190,6 +190,7 @@
 		A7A0E9FA174BA66000162F25 /* papasscode_marker@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = A7A0E9F2174BA66000162F25 /* papasscode_marker@2x.png */; };
 		A7A0E9FB174BA66000162F25 /* PAPasscodeViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = A7A0E9F4174BA66000162F25 /* PAPasscodeViewController.m */; };
 		A7C30259175A3C7A00AD4388 /* DirectoryWatcher.m in Sources */ = {isa = PBXBuildFile; fileRef = A7C30258175A3C7A00AD4388 /* DirectoryWatcher.m */; };
+		A7C3025E175A53D400AD4388 /* NSString+SupportedMedia.m in Sources */ = {isa = PBXBuildFile; fileRef = A7C3025D175A53D400AD4388 /* NSString+SupportedMedia.m */; };
 		A7CB0DB11716F72600050CF3 /* PlayingExternally@2x~iphone.png in Resources */ = {isa = PBXBuildFile; fileRef = A7CB0DAD1716F72600050CF3 /* PlayingExternally@2x~iphone.png */; };
 		A7CB0DB21716F72600050CF3 /* PlayingExternally~iphone.png in Resources */ = {isa = PBXBuildFile; fileRef = A7CB0DAE1716F72600050CF3 /* PlayingExternally~iphone.png */; };
 		A7CB0DB31716F72600050CF3 /* PlayingExternally~ipad.png in Resources */ = {isa = PBXBuildFile; fileRef = A7CB0DAF1716F72600050CF3 /* PlayingExternally~ipad.png */; };
@@ -484,6 +485,8 @@
 		A7A0E9F4174BA66000162F25 /* PAPasscodeViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PAPasscodeViewController.m; sourceTree = "<group>"; };
 		A7C30257175A3C7A00AD4388 /* DirectoryWatcher.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DirectoryWatcher.h; sourceTree = "<group>"; };
 		A7C30258175A3C7A00AD4388 /* DirectoryWatcher.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = DirectoryWatcher.m; sourceTree = "<group>"; };
+		A7C3025C175A53D400AD4388 /* NSString+SupportedMedia.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSString+SupportedMedia.h"; sourceTree = "<group>"; };
+		A7C3025D175A53D400AD4388 /* NSString+SupportedMedia.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "NSString+SupportedMedia.m"; sourceTree = "<group>"; };
 		A7CB0DAD1716F72600050CF3 /* PlayingExternally@2x~iphone.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "PlayingExternally@2x~iphone.png"; sourceTree = "<group>"; };
 		A7CB0DAE1716F72600050CF3 /* PlayingExternally~iphone.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "PlayingExternally~iphone.png"; sourceTree = "<group>"; };
 		A7CB0DAF1716F72600050CF3 /* PlayingExternally~ipad.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "PlayingExternally~ipad.png"; sourceTree = "<group>"; };
@@ -1007,6 +1010,7 @@
 				7D5F7AB717526573006CCCFA /* Accessory dialogs */,
 				7D5E39CC174FCDBE007DAFA1 /* Dropbox Integration */,
 				7D31CF061746AEF2005997E0 /* UI Elements */,
+				A7C3025A175A538700AD4388 /* Extensions */,
 				7DADC5601704FACC001DAC63 /* Imported */,
 				7DADC55C1704FAA8001DAC63 /* XIBs */,
 				A7924697170F0ED20036AAF2 /* Resources */,
@@ -1124,6 +1128,15 @@
 			path = Assets;
 			sourceTree = "<group>";
 		};
+		A7C3025A175A538700AD4388 /* Extensions */ = {
+			isa = PBXGroup;
+			children = (
+				A7C3025C175A53D400AD4388 /* NSString+SupportedMedia.h */,
+				A7C3025D175A53D400AD4388 /* NSString+SupportedMedia.m */,
+			);
+			name = Extensions;
+			sourceTree = "<group>";
+		};
 		CC1BBC441704936500A20CBF /* External VLC Libraries */ = {
 			isa = PBXGroup;
 			children = (
@@ -1383,6 +1396,7 @@
 				7D5F7AC317529430006CCCFA /* VLCHorizontalSwipeGestureRecognizer.m in Sources */,
 				7D5F7AC61752943F006CCCFA /* VLCVerticalSwipeGestureRecognizer.m in Sources */,
 				A7C30259175A3C7A00AD4388 /* DirectoryWatcher.m in Sources */,
+				A7C3025E175A53D400AD4388 /* NSString+SupportedMedia.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};