NSFileManager+Category

2024-06-08 17:32
文章标签 category nsfilemanager

本文主要是介绍NSFileManager+Category，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

1.头文件

#import <Foundation/Foundation.h>#define USER_FOLDER @"/User"
#define USER_CACHE_FOLDER @"/Cache"
#define USER_LOG_FOLDER [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingString:@"/User/Log/"]#define DB_FILE_NAME @"HMC"@interface NSFileManager (Category)+ (NSString *)getDocumentDirectory;+ (void)createFolderInDirectory:(NSString *)directory folder:(NSString *)folder;+ (void)createFileDirectories:(NSString *)dictory;+ (void)copyItemToFolder:(NSString *)folderName fileName:(NSString *)fileName dataBasePath:(NSString *)dbPath;+ (BOOL)fileExistWithName:(NSString *)fileName ;+ (NSString *)getFileContent:(NSString *)fileName;+ (NSMutableArray *)getAllFileNamesInDirectory:(NSString*)directory;+ (BOOL)copyFileFromDirectory:(NSString*)fromDir toDirectory:(NSString*)toDir fileName:(NSString*)fileName;
@end


2.m文件

#import "NSFileManager+Category.h"@implementation NSFileManager (Category)+ (NSString *)getDocumentDirectory
{NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsDirectory = [paths objectAtIndex:0];return documentsDirectory;
}+ (void)createFolderInDirectory:(NSString *)directory folder:(NSString *)folder
{NSString *folderPath = [NSString stringWithFormat:@"%@%@", directory, folder];NSFileManager *fileManager = [NSFileManager defaultManager];BOOL isDir = FALSE;BOOL isDirExist = [fileManager fileExistsAtPath:folderPath isDirectory:&isDir];if(!(isDirExist && isDir))    {BOOL bCreateDir = [fileManager createDirectoryAtPath:folderPath withIntermediateDirectories:YES attributes:nil error:nil];if(!bCreateDir){DDLogError(@"Create Mid Directory Failed.");}}}+ (void)createFileDirectories:(NSString *)dictory {    // 判断存放mid、mov的文件夹是否存在,不存在则创建对应文件夹NSString *midPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"db"];NSFileManager *fileManager = [NSFileManager defaultManager];BOOL isDir = FALSE;BOOL isDirExist = [fileManager fileExistsAtPath:midPath isDirectory:&isDir];if(!(isDirExist && isDir))    {BOOL bCreateDir = [fileManager createDirectoryAtPath:midPath withIntermediateDirectories:YES attributes:nil error:nil];if(!bCreateDir){DDLogError(@"Create Mid Directory Failed.");}DDLogDebug(@"%@",midPath);}NSString *movPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"mov"];isDir = FALSE;isDirExist = [fileManager fileExistsAtPath:movPath isDirectory:&isDir];if(!(isDirExist && isDir)){BOOL bCreateDir = [fileManager createDirectoryAtPath:movPath withIntermediateDirectories:YES attributes:nil error:nil];if(!bCreateDir){DDLogError(@"Create Mov Directory Failed.");}DDLogDebug(@"%@",movPath);}
}+ (void)copyDBItemToFolder:(NSString *)folderName
{}+ (void)copyItemToFolder:(NSString *)folderName fileName:(NSString *)fileName dataBasePath:(NSString *)dbPath
{NSFileManager *fileManager = [NSFileManager defaultManager];NSString *filePath = [[folderName stringByAppendingPathComponent:fileName] stringByAppendingString:@".db"];NSString * resourcePath = [[NSBundle mainBundle] pathForResource:fileName ofType:@"db"];if([fileManager fileExistsAtPath:filePath] == NO && filePath && resourcePath) {[fileManager copyItemAtPath:resourcePath toPath:filePath error:nil];}
}+ (BOOL)fileExistWithName:(NSString *)fileName {NSFileManager *fileManager = [NSFileManager defaultManager];NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsDirectory = [paths objectAtIndex:0];NSString *filePath = [[documentsDirectory stringByAppendingPathComponent:@"db"] stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.db", fileName]];return [fileManager fileExistsAtPath:filePath];
}+ (NSString *)getFileContent:(NSString *)fileName
{NSError *error=nil;NSString *str=[NSString stringWithContentsOfFile:fileName encoding:NSUTF8StringEncoding error:&error];return str;
}+ (NSMutableArray *)getAllFileNamesInDirectory:(NSString*)directory{NSMutableArray *retVal = [[NSMutableArray alloc] init];NSFileManager *nsFile = [NSFileManager defaultManager];NSError *err = nil;if ([nsFile fileExistsAtPath:directory]) {NSArray *sysList = [nsFile contentsOfDirectoryAtPath:directory error:&err];if (sysList && sysList.count > 0) {for (NSString *fileName in sysList) {if ([fileName isEqualToString: @"."] || [fileName isEqualToString:@".."] || [fileName isEqualToString:@".DS_Store"])continue;[retVal addObject:fileName];}}}else{if (![[NSFileManager defaultManager] createDirectoryAtPath:directorywithIntermediateDirectories:YESattributes:nilerror:&err]) {DDLogError(@"Error creating Directory!\nerror: %@\ndirectory: %@", err,directory);}else{DDLogInfo(@"Success creating Directory: %@",directory);}}return retVal;
}// 将文件转移到指定目录文件夹,先加.bak后重命名
+ (BOOL)copyFileFromDirectory:(NSString*)fromDir toDirectory:(NSString*)toDir fileName:(NSString*)fileName{NSString *filePath = [NSString stringWithFormat:@"%@/%@", fromDir,fileName];if([fromDir hasSuffix:@"/"]){filePath = [fromDir stringByAppendingString:fileName];}if (!fromDir || [fromDir isEqualToString:@""] ) {DDLogWarn(@"Warn fromDir is nil!");return NO;}if (!toDir || [toDir isEqualToString:@""] ) {DDLogWarn(@"Warn toDir is nil!");return NO;}if (![[NSFileManager defaultManager] fileExistsAtPath:filePath] ) {DDLogWarn(@"Warn fileName is no exist!");return NO;}DDLogDebug(@"fromDir:%@\ntoDir:%@\nfileName:%@\n",fromDir,toDir,fileName);NSError *err = nil;if (![[NSFileManager defaultManager] fileExistsAtPath:fromDir]) {if (![[NSFileManager defaultManager] createDirectoryAtPath:fromDirwithIntermediateDirectories:YESattributes:nilerror:&err]) {DDLogError(@"Error creating Directory!\nerror: %@\ndirectory: %@", err,fromDir);return NO;}else{DDLogInfo(@"Success creating Directory: %@",fromDir);}}if (![[NSFileManager defaultManager] fileExistsAtPath:toDir]) {if (![[NSFileManager defaultManager] createDirectoryAtPath:toDirwithIntermediateDirectories:YESattributes:nilerror:&err]) {DDLogError(@"Error creating Directory!\nerror: %@\ndirectory: %@", err,toDir);return NO;}else{DDLogInfo(@"Success creating Directory: %@",toDir);}}NSString *fileBakName = [NSString stringWithFormat:@"%@.bak",fileName];NSString *fileBakPath = [NSString stringWithFormat:@"%@/%@", toDir,fileBakName];if([toDir hasSuffix:@"/"]){fileBakPath = [toDir stringByAppendingString:fileBakName];}if (![[NSFileManager defaultManager] copyItemAtPath:filePath toPath:fileBakPath error:&err]) {DDLogError(@"Error copy file (%@): %@", fileBakName, err);return NO;}else{DDLogInfo(@"Success copy file (%@)",fileBakName);NSString *newFilePath = [NSString stringWithFormat:@"%@/%@", toDir,fileName];if([toDir hasSuffix:@"/"]){newFilePath = [toDir stringByAppendingString:fileName];}if (![[NSFileManager defaultManager] moveItemAtPath:fileBakPath toPath:newFilePath error:&err]) {DDLogError(@"Error renaming file (%@) to (%@) .\nerror : %@", fileBakName , fileName, err);return NO;}DDLogInfo(@"Success renaming file (%@) to (%@)", fileBakName, fileName);return YES;}
}@end


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