FileManagerHelper

gistfile1.m

// FileManagerHelper.h

#import <Foundation/Foundation.h>

@interface FileManagerHelper : NSObject

+ (void) cleanDocumentsDir;
+ (void) changeCapitalJPGNames;

//
// Return the path to the Documents directory
//
+ (NSString *) documents;

//
// Delete all the files in Documents
//
+ (void) eraseAllDocuments;

//
//
//
+ (BOOL) createDirectoryAtPath:(NSString *)path;

//
//
//
+ (BOOL) fileExistsAtPath:(NSString *)path;
@end





/*******************************************************/
// FileManagerHelper.m

#import "FileManagerHelper.h"

@implementation FileManagerHelper

+ (void) cleanDocumentsDir {
    
    // Disable this temporary
//    return;
    
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    int count;
    NSArray *directoryContent = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[paths objectAtIndex:0] error:NULL];
    for (count = 0; count < (int)[directoryContent count]; count++) {
        
        NSString *file = [directoryContent objectAtIndex:count];
        NSString *pathToDelete = [[paths objectAtIndex:0] stringByAppendingPathComponent:file];
        NSError *error;
        if ([[NSFileManager defaultManager] fileExistsAtPath:pathToDelete]) {
            
            if (![[NSFileManager defaultManager] removeItemAtPath:pathToDelete error:&error]) {
                
                NSLog(@"Delete file error: %@", error);
            }
        }
    }
}

+ (void) changeCapitalJPGNames {
    
    NSString *documents = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    NSString *path = [documents stringByAppendingPathComponent:@"pimexport"];
    NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:NULL];
    NSError *error;
    
    for (NSString *filename in files) {
        
        NSString *ext = [filename pathExtension];
//        NSLog(@"ext found %@", ext);
        
        if ([[ext lowercaseString] isEqualToString:@"jpg"]) {
            
            NSString *newExt = [ext lowercaseString];
            NSString *newFilename = [NSString stringWithFormat:@"%@.%@", [filename stringByDeletingPathExtension], newExt];
            NSString *src = [path stringByAppendingPathComponent:filename];
            NSString *dest = [path stringByAppendingPathComponent:newFilename];
            NSString *tmpName = [dest stringByAppendingString:@"tmp"];
//            NSLog(@"trying to rename file %@ to %@", filename, newFilename);
            if (![[NSFileManager defaultManager] moveItemAtPath:src toPath:tmpName error:&error]) {
                
//                NSLog(@"error renaming to tmp file %@, %@", filename, error);
            }  
            if (![[NSFileManager defaultManager] moveItemAtPath:tmpName toPath:dest error:&error]) {
                
//                NSLog(@"error renaming from file %@, %@", filename, error);
            }  
        }
    }  
}

+ (NSString *) documents {
    
    return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
}

+ (void) eraseAllDocuments {
    
    NSFileManager *fm = [NSFileManager defaultManager];
    NSString *directory = [FileManagerHelper documents];
    NSError *error = nil;
    for (NSString *file in [fm contentsOfDirectoryAtPath:directory error:&error]) {
        
        BOOL success = [fm removeItemAtPath:[directory stringByAppendingPathComponent:file] error:&error];
        if (!success || error) {
            
            // it failed.
        }
    }

}

+ (BOOL) createDirectoryAtPath:(NSString *)path {
    
    BOOL isDir = YES;
    if(![[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:&isDir]) {
        
        if(![[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil]) {
            
            return NO;
        }
    } 
    return YES;
}

+ (BOOL) fileExistsAtPath:(NSString *)path {
    
    BOOL isDir = YES;
    if(![[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:&isDir]) {
        
        return NO;
    }
    return YES;
}

@end