IOS项目开发中的文件和文件夹操作

你的名字 2021-12-23 18:09 376阅读 0赞

1 + (NSFileManager *)getNSFileManager
      2 {
      3     // iNSFileManager是一个静态变量
      4     if (!iNSFileManager)
      5     {
      6         iNSFileManager = [NSFileManager defaultManager];
      7     }
      8     return iNSFileManager;
      9 }
     10 
     11 #pragma mark 判断文件是否存在
     12 
     13 + (BOOL)fileExistsAtPath:(NSString *)aPath
     14 {
     15     BOOL result = NO;
     16     if (aPath)
     17     {
     18         result = [[self getNSFileManager] fileExistsAtPath:aPath];
     19         
     20     }
     21     return result;
     22 }
     23 
     24 + (BOOL)fileExistsAtDocumentsWithFileName:(NSString *)aFileName{
     25     BOOL result = NO;
     26     if (aFileName)
     27     {
     28         NSString *fullFileName = [self getFullDocumentPathWithName:aFileName];
     29         WALog(fullFileName);
     30         
     31         result = [[self getNSFileManager] fileExistsAtPath:fullFileName];
     32     }
     33     return result;
     34 }
     35 
     36 
     37 #pragma mark 判断文件夹是否存在
     38 + (BOOL)dirExistsAtPath:(NSString *)aPath
     39 {
     40     BOOL isDir = NO;
     41     BOOL result = [[self getNSFileManager] fileExistsAtPath:aPath
     42                                                 isDirectory:&isDir];
     43     return result && isDir;
     44 }
     45 
     46 #pragma mark 获取上级目录
     47 + (NSString *) getParentPath:(NSString *)aPath
     48 {
     49     return [aPath stringByDeletingLastPathComponent];
     50     
     51 }
     52 
     53 #pragma mark 创建目录的上级目录
     54 + (BOOL)createParentDirectory:(NSString *)aPath
     55 {
     56     //存在上级目录，并且上级目录不存在的创建所有的上级目录
     57     BOOL result = NO;
     58     NSString *parentPath = [self getParentPath:aPath];
     59     if (parentPath && ![self dirExistsAtPath:parentPath])
     60     {
     61         result = [[self getNSFileManager] createDirectoryAtPath:parentPath
     62                                     withIntermediateDirectories:YES
     63                                                      attributes:nil
     64                                                           error:nil];
     65     }
     66     else if ([self dirExistsAtPath:parentPath]){
     67         result = YES;
     68     }
     69     return result;
     70 }
     71 
     72 #pragma mark 创建目录
     73 + (BOOL)createPath:(NSString *)aPath
     74 {
     75     NSFileManager *tempFileManager = [self getNSFileManager];
     76     BOOL result = NO;
     77     result = [self createParentDirectory:aPath];
     78     if (result)
     79     {
     80         result = [tempFileManager createDirectoryAtPath:aPath
     81                             withIntermediateDirectories:YES
     82                                              attributes:nil
     83                                                   error:nil];
     84         
     85     }
     86     return result;
     87 }
     88 
     89 #pragma mark 目录下创建文件
     90 + (BOOL)createFileWithPath:(NSString *)aPath content:(NSData *)aContent
     91 {
     92     NSFileManager *tempFileManager = [self getNSFileManager];
     93     BOOL result = NO;
     94     result = [self createParentDirectory:aPath];
     95     if (result)
     96     {
     97         result = [tempFileManager createFileAtPath:aPath
     98                                           contents:aContent
     99                                         attributes:nil];
    100     }
    101     return result;
    102 }
    103 
    104 #pragma mark documents下创建文件
    105 + (BOOL)createFileAtDocumentsWithName:(NSString *)aFilename
    106                               content:(NSData *)aContent
    107 {
    108     NSString *filePath =[self getFullDocumentPathWithName:aFilename];
    109     BOOL result = [self createFileWithPath:filePath
    110                                    content:aContent];
    111     return result;
    112 }
    113 
    114 + (NSString *)createFileAtTmpWithName:(NSString *)aFilename
    115                               content:(NSData *)aContent
    116 {
    117     NSString *filePath =[self getFullTmpPathWithName:aFilename];
    118     BOOL result = [self createFileWithPath:filePath
    119                                    content:aContent];
    120     if(!result)
    121     {
    122         filePath = nil;
    123     }
    124     return filePath;
    125     
    126 }
    127 
    128 + (NSString *)createFileWithName:(NSString *)aFilename
    129                          content:(NSData *)aContent
    130 {
    131     NSString *filePath =[self getFullDocumentPathWithName:aFilename];
    132     BOOL result = [self createFileWithPath:filePath
    133                                    content:aContent];
    134     if(!result)
    135     {
    136         filePath = nil;
    137     }
    138     return filePath;
    139 }
    140 
    141 #pragma mark Caches下创建文件
    142 + (BOOL)createFileAtCachesWithName:(NSString *)aFilename
    143                            content:(NSData *)aContent
    144 {
    145     NSString *filePath =[self getFullCachesPathWithName:aFilename];
    146     BOOL result = [self createFileWithPath:filePath
    147                                    content:aContent];
    148     return result;
    149 }
    150 #pragma mark 根据文件名称获取Caches的文件名的全路径,需要自己释放
    151 + (NSString *)getFullCachesPathWithName:(NSString *)aFileName
    152 {
    153     return [[self getCachesPath] stringByAppendingPathComponent:aFileName];
    154 }
    155 
    156 
    157 + (NSString *)addSubPath:(NSString *)aSubPath
    158                   toPath:(NSString *)aPath
    159 {
    160     return [aPath stringByAppendingPathComponent:aSubPath];
    161 }
    162 
    163 #pragma mark 根据文件名称获取documents的文件名的全路径,需要自己释放
    164 + (NSString *)getFullDocumentPathWithName:(NSString *)aFileName
    165 {
    166     return [[self getDocumentPath] stringByAppendingPathComponent:aFileName];
    167 }
    168 
    169 #pragma mark 根据文件名称获取tmp的文件名的全路径,需要自己释放
    170 + (NSString *)getFullTmpPathWithName:(NSString *)aFileName
    171 {
    172     return [[self getTmpPath] stringByAppendingPathComponent:aFileName];
    173 }
    174 
    175 
    176 #pragma mark 获取documents的全路径
    177 + (NSString *)getDocumentPath
    178 {
    179     NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
    180     NSString *result = [pathArray objectAtIndex:0];
    181     return result;
    182     
    183 }
    184 
    185 + (NSString *)getHomePath
    186 {
    187     NSString *home = [@"~" stringByExpandingTildeInPath];
    188     return home;
    189 }
    190 
    191 #pragma mark 删除文件
    192 + (BOOL)deleteFileWithName:(NSString *)aFileName
    193                      error:(NSError **)aError
    194 {
    195     NSFileManager *tempFileManager = [self getNSFileManager];
    196     return [tempFileManager removeItemAtPath:aFileName
    197                                        error:aError];
    198 }
    199 
    200 
    201 + (BOOL)deleteFileWithUrl:(NSURL *)aUrl error:(NSError **)aError
    202 {
    203     return [[self getNSFileManager] removeItemAtURL:aUrl error:aError];
    204 }
    205 
    206 #pragma mark 删除文件夹下的所有文件
    207 + (BOOL)deleteAllFileAtPath:(NSString *)aPath
    208 {
    209     BOOL result = NO;
    210     NSArray *fileArray = [self getContentsOfDirectoryAtPath:aPath];
    211     
    212     
    213     NSString *filePath = nil;
    214     
    215     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    216     for (int i = 0; i<[fileArray count]; i++)
    217     {
    218         filePath = [aPath stringByAppendingPathComponent:[fileArray objectAtIndex:i]];
    219         result = [[self getNSFileManager] removeItemAtPath:filePath
    220                                                      error:nil];
    221         if (!result)
    222         {
    223             break;
    224         }
    225         filePath = nil;
    226     }
    227     [pool drain];
    228     return result;
    229 }
    230 
    231 #pragma mark 根据文件名删除document下的文件
    232 + (BOOL)deleteFileAtDocumentsWithName:(NSString *)aFilename
    233                                 error:(NSError **)aError
    234 {
    235     NSString *filePath = [self getFullDocumentPathWithName:aFilename];
    236     return [self deleteFileWithName:filePath
    237                               error:aError];
    238 }
    239 
    240 #pragma mark 获取tmp路径
    241 + (NSString *)getTmpPath
    242 {
    243     NSString *pathName = [NSHomeDirectory() stringByAppendingPathComponent:@"tmp"];
    244     return pathName;
    245 }
    246 
    247 #pragma mark 获取caches路径
    248 + (NSString *)getCachesPath
    249 {
    250     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES);
    251     return [paths objectAtIndex:0];
    252 }
    253 
    254 #pragma mark 在Document下创建文件目录
    255 + (BOOL)createDirectoryAtDocument:(NSString *)aDirectory
    256 {
    257     NSFileManager *tempFileManager = [self getNSFileManager];
    258     NSString * directoryAll = [self getFullDocumentPathWithName:aDirectory];
    259     
    260     BOOL result = [tempFileManager createDirectoryAtPath:directoryAll
    261                              withIntermediateDirectories:YES
    262                                               attributes:nil
    263                                                    error:nil];
    264     return result;
    265 }
    266 
    267 #pragma mark 读取文件
    268 + (NSData *)readFileWithPath:(NSString *)aPath
    269 {
    270     NSData *data = [NSData dataWithContentsOfFile:aPath];
    271     return data;
    272 }
    273 
    274 + (NSData *)readFileWithURL:(NSURL *)aUrl
    275 {
    276     NSData *data = [NSData dataWithContentsOfURL:aUrl];
    277     return data;
    278 }
    279 + (NSData *)readFileAtDocumentsWithFileName:(NSString *)aFileName
    280 {
    281     NSString *fullPathWithName =  [self getFullDocumentPathWithName:aFileName];
    282     WALog(fullPathWithName);
    283     NSData *data = [NSData dataWithContentsOfFile:fullPathWithName];
    284     return data;
    285 }
    286 
    287 #pragma mark 遍历文件夹下的所有文件,不含子文件
    288 + (NSArray *)getContentsOfDirectoryAtPath:(NSString *)aDirString
    289 
    290 {
    291     NSFileManager *tempFileManager = [self getNSFileManager];
    292     return [tempFileManager contentsOfDirectoryAtPath:aDirString
    293                                                 error:nil];
    294 }
    295 
    296 
    297 + (NSArray *)getContentsOfDirectoryByTimeOrderAtPath:(NSString *)aDireString
    298 {
    299     NSArray *files = [CWAFileUtil getAllFilesAtPath:(NSString *)aDireString];
    300     
    301     NSMutableArray *iUrls = [[NSMutableArray alloc] initWithCapacity:1];
    302     NSArray *sortedFiles = nil;
    303     
    304     if([files count] > 0)
    305     {
    306         sortedFiles = [files sortedArrayUsingComparator:^(NSString *url1, NSString *url2)
    307                        {
    308                            
    309                            NSDictionary *fileAttributes1 = [[CWAFileUtil getNSFileManager] attributesOfItemAtPath:url1
    310                                                                                                             error:nil];
    311                            
    312                            NSDictionary *fileAttributes2 = [[CWAFileUtil getNSFileManager] attributesOfItemAtPath:url2
    313                                                                                                             error:nil];
    314                            NSDate *date1 = [fileAttributes1 objectForKey:NSFileCreationDate] ;
    315                            
    316                            NSDate *date2 = [fileAttributes2 objectForKey:NSFileCreationDate] ;
    317                            return [date2 compare:date1];
    318                        }];
    319     }
    320     
    321     for (int i = 0; i < [sortedFiles count]; i++)
    322     {
    323         NSURL *url = [NSURL fileURLWithPath:[sortedFiles objectAtIndex:i]];
    324         [iUrls addObject:url];
    325     }
    326     
    327     return [iUrls autorelease];
    328     
    329 }
    330 
    331 + (NSArray *)getContentsOfTmpDirectorByTimeOrder
    332 {
    333     return [self getContentsOfDirectoryByTimeOrderAtPath:[self getTmpPath]];
    334 }
    335 
    336 + (unsigned long long)fileSizeAtPaht:(NSString *)aPath
    337 {
    338     return  [[[self getNSFileManager] attributesOfItemAtPath:aPath  error:nil] fileSize];
    339 }
    340 
    341 
    342 #pragma mark 遍历文件夹下的所有文件,含子文件
    343 + (NSArray *)getAllFilesAtPath:(NSString *)aDirString
    344 {
    345     NSMutableArray *temPathArray = [NSMutableArray array];
    346     
    347     NSFileManager *tempFileManager =  [self getNSFileManager];
    348     NSArray *tempArray = [self getContentsOfDirectoryAtPath:aDirString];
    349     NSString *fullPath = nil;
    350     
    351     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    352     for (NSString *fileName in tempArray)
    353     {
    354         
    355         BOOL flag = YES;
    356         fullPath = [aDirString stringByAppendingPathComponent:fileName];
    357         
    358         //判断是否存在
    359         if ([tempFileManager fileExistsAtPath:fullPath
    360                                   isDirectory:&flag])
    361         {
    362             //不是目录，直接添加
    363             if (!flag)
    364             {
    365                 // ignore .DS_Store
    366                 if (![[fileName substringToIndex:1] isEqualToString:@"."])
    367                 {
    368                     [temPathArray addObject:fullPath];
    369                 }
    370             }
    371             //如果是目录的话，以当前文件夹为key,文件夹下的子文件名为value,递归调用
    372             else
    373             {
    374                 NSArray *subPathArray = [self getAllFilesAtPath:fullPath];
    375                 //        NSDictionary *subPathDic = [[NSDictionary alloc] initWithObjectsAndKeys:subPathArray,fullPath,nil];
    376                 [temPathArray addObjectsFromArray:subPathArray];
    377                 //        [subPathDic release];
    378             }
    379         }
    380         fullPath = nil;
    381         
    382     }
    383     [pool drain];
    384     NSArray *resultArray = [NSArray arrayWithArray:temPathArray];
    385     
    386     
    387     return resultArray;
    388     
    389 }
    390 
    391 #pragma mark 复制一个目录下的文件到另外一个目录,前后两个必须一致，要么都是目录，要么都是文件
    392 + (BOOL) copyItemAtPath:(NSString *)aPath
    393                  toPath:(NSString *)aDestinationPath
    394                   error:(NSError **)aError
    395 {
    396     NSFileManager *tempFileManager = [self getNSFileManager];
    397     return [tempFileManager copyItemAtPath:aPath
    398                                     toPath:aDestinationPath 
    399                                      error:aError];
    400 }
    401 
    402 #pragma mark 重命名文件
    403 + (BOOL)renameFileNameFrom:(NSString *)aOldName 
    404                     toPath:(NSString *)aNewName 
    405                      error:(NSError **)aError{
    406     NSFileManager *tempFileManager = [self getNSFileManager];
    407     BOOL result =  [tempFileManager moveItemAtPath:aOldName 
    408                                             toPath:aNewName 
    409                                              error:aError];
    410     return result;
    411 }

转载于:https://www.cnblogs.com/eagle927183/p/3501885.html