iphone-common-codes-ccteam源代码 CCFileUtil.m

// // CCFileUtil.m // CCFC // // Created by xichen on 11-12-16. // Copyright 2011 ccteam. All rights reserved. // #import "CCFileUtil.h" #import "CCRandom.h" @implementation CCFileUtil //获取应用程序的文档目录 + (NSString *)getDocFolder { NSArray *userPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); return [userPaths objectAtIndex:0]; } // 获取应用程序文档目录中某个指定文件全路径 + (NSString *)getFileFullPathInDocument:(NSString *)fileName { NSString *docPath = [self getDocFolder]; return [docPath stringByAppendingPathComponent:fileName]; } // 获取应用程序Library目录路径 + (NSString *)getLibFolder { NSArray *libPaths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); return [libPaths objectAtIndex:0]; } //获取应用程序Library目录中某个指定文件全路径 + (NSString *)getFileFullPathInLibFolder:(NSString *)fileName { NSString *libPath = [self getLibFolder]; return [libPath stringByAppendingPathComponent:fileName]; } // 获取应用程序bundle路径 + (NSString *)getBundleFolder { return APP_DIR; } // 获取文件在bundle路径的全路径名 + (NSString *)getFileFullPathInBundlePath:(NSString *)fileName { NSString *bundlePath = [self getBundleFolder]; return [bundlePath stringByAppendingPathComponent:fileName]; } // 获取文件路径的父目录名称 + (NSString *)getParentFolder:(NSString *)filePath { int i; for (i = filePath.length - 2; i >= 0; i--) { if([filePath characterAtIndex:i] == '/') { break; } } if(i == filePath.length - 2 || i == 0) { return nil; } return [filePath substringToIndex:i]; } // 如果文件在Document目录中不存在，那么拷贝一份; 如果已存在，不拷贝 + (BOOL)copyFileToDocumentFolderIfNotExist:(NSString *)fileName { NSString *destFileFullPath = [self getFileFullPathInDocument:fileName]; NSFileManager *fileManager = [NSFileManager defaultManager]; if(![fileManager fileExistsAtPath:destFileFullPath]) { NSString *bundleFileFullPath = [RES_DIR stringByAppendingPathComponent:fileName]; BOOL ret = [fileManager copyItemAtPath:bundleFileFullPath toPath:destFileFullPath error:nil]; return ret; } return TRUE; } // 将文件拷贝到Document目录中，如果已存在，覆盖 + (BOOL)copyFileToDocumentFolder:(NSString *)fileName { NSString *destFileFullPath = [self getFileFullPathInDocument:fileName]; NSFileManager *fileManager = [NSFileManager defaultManager]; if([fileManager fileExistsAtPath:destFileFullPath]) { if(![fileManager removeItemAtPath:destFileFullPath error:nil]) { return FALSE; } } NSString *bundleFileFullPath = [RES_DIR stringByAppendingPathComponent:fileName]; return [fileManager copyItemAtPath:bundleFileFullPath toPath:destFileFullPath error:nil]; } // 删除指定文件夹下指定文件名的文件 + (BOOL)deleteFileInFolder:(NSString *)folder withFileName:(NSString *)fileName { NSString *destFileFullPath = [folder stringByAppendingPathComponent:fileName]; NSFileManager *fileManager = [NSFileManager defaultManager]; if(![fileManager fileExistsAtPath:destFileFullPath]) { return FALSE; } return [fileManager removeItemAtPath:destFileFullPath error:nil]; } // 删除应用程序Document目录中的指定文件 + (BOOL)deleteFileInDocFolder:(NSString *)fileName { return [self deleteFileInFolder:[self getDocFolder] withFileName:fileName]; } // delete a folder + (BOOL)deleteFolder:(NSString *)folderPath { return [self deleteFileInFolder:folderPath withFileName:@""]; } // 文件是否存在 + (BOOL)isFileExist:(NSString *)filePath { NSFileManager *fileManager = [NSFileManager defaultManager]; return ([fileManager fileExistsAtPath:filePath]); } // 重命名指定路径下某个文件为另一个文件名 + (BOOL)rename:(NSString *)srcFileFolder srcFileName:(NSString *)srcName toFileName:(NSString *)destName { return [self rename:srcFileFolder srcFileName:srcName destFolder:srcFileFolder destFileName:destName]; } // 重命名指定路径下某个文件为指定目录下的另一个文件名 + (BOOL)rename:(NSString *)srcFileFolder srcFileName:(NSString *)srcName destFolder:(NSString *)destFolder destFileName:(NSString *)destName { NSFileManager *fileManager = [NSFileManager defaultManager]; NSString *srcFullPath = [NSString stringWithFormat:@"%@/%@", srcFileFolder, srcName]; if([fileManager fileExistsAtPath:srcFullPath]) return FALSE; NSString *destFullPath = [NSString stringWithFormat:@"%@/%@", destFolder, destName]; BOOL ret = [fileManager copyItemAtPath:srcFullPath toPath:destFullPath error:nil]; if(!ret) return FALSE; ret = [fileManager removeItemAtPath:srcFullPath error:nil]; return ret; } // 判断是否是目录 + (BOOL)isFolder:(NSString *)filePath { NSFileManager *fileManager = [NSFileManager defaultManager]; BOOL ret; BOOL isExist = [fileManager fileExistsAtPath:filePath isDirectory:&ret]; return (isExist && ret); } // 获取目录下第一级的所有文件 + (NSArray *)getAllFilesAtFolder:(NSString *)path { NSFileManager *fileManager = [NSFileManager defaultManager]; return [fileManager contentsOfDirectoryAtPath:path error:nil]; } + (NSString *)systemLibraryPath:(NSString *)name { return [name systemLibraryPath]; } // returns whether the path is an absolute path + (BOOL)isAbsolutePath:(NSString *)path { return [path isAbsolutePath]; } // generate a new file in folder, not create + (NSString *)generateNewFile:(NSString *)folder { NSString *tempFileName; int len = 4; BOOL generateNewFileOK = FALSE; while (!generateNewFileOK) { tempFileName = [CCRandom generateRandomStringByLen:len]; generateNewFileOK = ![CCFileUtil isFileExist: [folder stringByAppendingFormat:@"/%@", tempFileName]]; if(!generateNewFileOK) ++len; if(len == INT_MAX) return nil; } return tempFileName; } // create a new file(not a folder) in the indicated folder + (NSString *)createNewFileInFolder:(NSString *)folder { NSFileManager *fileManager = [NSFileManager defaultManager]; NSString *tempFileName = [self generateNewFile:folder]; if(tempFileName == nil) return nil; NSString *fileFullPath = [NSString stringWithFormat:@"%@/%@", folder, tempFileName]; if([fileManager createFileAtPath:fileFullPath contents:nil attributes:nil]) return tempFileName; return nil; } // get the current directory + (NSString *)getCurrentDirectory { NSFileManager *fileManager = [NSFileManager defaultManager]; return [fileManager currentDirectoryPath]; } // change the current directory to the indicated directory + (BOOL)changeCurrentDirectoryToDirectory:(NSString *)newDir { NSFileManager *fileManager = [NSFileManager defaultManager]; return [fileManager changeCurrentDirectoryPath:newDir]; } // enumerator all files in folder + (NSArray *)enumAllFilesInFolder:(NSString *)folder { NSMutableArray *arr = [NSMutableArray array]; NSString *file; NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager] enumeratorAtPath:folder]; while(file = [enumerator nextObject]) { [arr addObject:file]; } return arr; } // get the home directory + (NSString *)getHomeDir { return NSHomeDirectory(); } @end

googlecode链接地址（会有更新）：http://code.google.com/p/iphone-common-codes-ccteam/source/browse/trunk/CCFC/files/CCFileUtil.m