OSFile#2
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This document describes an object-oriented file system interface and API called OSFile. It includes classes like OSF_Directory, OSF_File, and OSF_FileSystem that represent directories, files, and the file system. Interfaces like OSF_DirectoryInterface and OSF_FileInterface define methods to interact with directories and files. Examples show how to create a virtual hard disk, file system, directories, and files using these interfaces. Unit test classes are also included to test the OSFile implementation.
OSFile#2
- 1. OSFile #2 Interface & API
- 3. OSF_PlainAPI
- 4. Easy to use You can use OSF_PlainAPI to easy non-object oriented access.
- 5. OSF_PlainAPI OSF_FileHandle* OSF_Open(string path); void OSF_Close(OSF_FileHandle* fileHandle); OSF_PlainAPIInt OSF_Read(OSF_FileHandle* fileHandle, void* buf, OSF_PlainAPIInt count); OSF_PlainAPIInt OSF_Write(OSF_FileHandle* fileHandle, void* buf, OSF_PlainAPIInt count); void OSF_Ls(string path, void (*callback)(OSF_DirRecord*)); OSF_OWNER OSF_chownFile(string path); void OSF_chownFile(OSF_OWNER owner, string path); OSF_PERMISSION OSF_chmodFile(string path); void OSF_chmodFile(OSF_PERMISSION permission, string path); void OSF_remove(string dir, string filename);
- 6. Console example #1 if (command == "write") { string filename; cin >> filename; cin >> buffer; OSF_FileHandle* handle = OSF_Open(path + "/" + filename, true); OSF_Write(handle, buffer, sizeof (buffer)); OSF_Close(handle); }
- 7. Console example #2 if (command == "ls") { OSF_Ls(path, &ls_print); cout << endl; }
- 8. Console example #3 if (command == "setowner") { string filename; cin >> filename; OSF_OWNER owner; cin >> owner; OSF_chownFile(owner, path + "/" + filename); }
- 10. Interfaces OSF_Types - contain type and preprocessor macros OSF_VHDDInterface - represent your virtual hard disk OSF_FileSystemInterface - represent file system on the virtual hard disk OSF_DirectoryInterface - represent a directory OSF_FileInterface - represent a file OSF_DiskListInterface - provide data organization interface
- 11. example #create //Create new virtual hard disk vHDD = new OSF_VHDD(filePath 128, 80, true); //create new file system of the disk OSF_FileSystemHeader header; OSF_scpy(header.diskName, "testDisk"); fileSystem = new OSF_FileSystem(vHDD, &header, 2);
- 12. example #create direcotry OSF_DirectoryInterface* rootDir = plainAPIData->fs->getRootDir(); OSF_DirectoryInterface* d1 = rootDir->createDir("d1"); OSF_DirectoryInterface* d2_1 = d1->createDir("d2_1"); OSF_DirectoryInterface* d2_2 = d2_1->createDir("d2_2"); OSF_DirectoryInterface* d3 = d2_1->createDir("d3"); //…. OR rootDir->mkdir(“d1/d2/d3/d4/…”);
- 13. example #file //create OSF_FileInterface* file = directory->createFile("f1"); //write to file int bufSize = clusterSize * clusterCount; char* buf = testUnit->createBuffer(bufSize); //random data f1->write(buf, 0, 2);
- 15. Tests
- 16. Test classes System contain OSF_TestUnit. The class provide interface for c++ testing. Make possible integrate OSF tests with NetBeans IDE and other graphic interfaces.
- 17. Tests
- 19. Biblografia “Jądro systemu UNIX” - Vahalia - Nowe horyzonty “Anatomia PC. Wydanie X”, Piotr Metzger Helion