Solved-Homework # 8- Solution

Description

In this homework, you will write classes for computer files in an hierarchy.

File is a class that has the following data members

• Name of the file

• owner of the file

• size of the file

• Last modificaiton time of the file

The class File has also operations such as

• Setters and getters for the approriate data members

• Function path that returns the path of the file as string

• Function ls that prints the file on the screen similar to what “ls file” does. Function ls also takes parameters similar to Linux ls paramerts -l, -R, -a.

• Function cd that returns a File reference if the operation is successful.

• Function cp, copies the given file to the current file and returns true if sucessful. Otherwise, it returns false.

The are other classes that derive from the File class. The class Directory is a special File that can hold a number of Files in it. It redefines/overrides all necessary functions and adds new data members as needed.

The class Executable is a File that can be executed. It has members for storing the compiler that created the executable.

The class TextFile is a File that contains text. It has members for stroring the text type, Ascii, Unicode etc.

An example run can be such as follows:

Direcrory mydir(“mydir”, “owner”, ….);

Executable myExec(“myExec”, ….);

mydir.cp(myExec);

mydir.ls(“Rl”);

would print

myExec -rwx akgul 917 7.12.2015

Test each of your classes and your functions with several examples and attach your test results. Use real directory structures from Linux environment.

Below are other rules

• You may use STL classes to keep your data

• You may add other data members and functions if needed.

• The class File is the base class. It should not use any information about the derived classes.

• Each class should have its header and implementation files.

• Use name spaces and separation of interface and implementation, and other good programming practices