Homework 6, A small library.

Short Description:

Write a program that maintains information about books and readers in a small library.

This assignment is worth 40 points.

Goals

When you finish this homework, you should have:

Worked with arrays
Worked with structures.

Formal Description

You have been hired to write a simple database for a small library. This library has a collection of books and a set of readers. Readers are identified by their full name and books are identified by their title. The library wishes to track the who is borrowing the books and how often the books are being read. In addition, the library wishes to know how many books and pages each reader has read.

The library holds no more than 1000 books, and has no more than 50 readers. Your program should ensure that these conditions are enforced.

A book consists of the following:

A title. This string can contain spaces but never contains a :
An Author. This string can contain spaces but never contains a :
A page count. This is a positive integer.

At any time the library might wish to know this information as well as if the book is present in the library, who has the book if it is checked out, and the number of times the book has been read, not counting the current reader if there is one.

A reader consists of a name. At any time the library might wish to know the if the reader has a book, and if so, what book, as well as the number of books and pages the reader has read excluding the current book.

The library wishes to allow the following actions

CHECKOUT title:reader
RETURN title
REPORT reader
STATS title
PRINT BOOK|PEOPLE

CHECKOUT: this will allow a reader to check out the given title from the library as long as the title exists, the reader exists, the book is present and the reader does not currently have a book.

Note the statistics on the reader and the book do not change when the book is checked out.

If the reader is not in the reader list, you should print the following message and stop processing the command.
```
Error: unknown reader name.  
```
If the title is not in the list of books, you should print the following message and stop processing the command.
```
Error: unknown book title.  
```
If the book is already checked out, you should print the following message and stop processing the command.
```
Error: title is already checked out.  
```
If the reader already has a book checked out, you should print the following message and stop processing the command.
```
Error: name already has a book. 
```
Otherwise, you should print the message
```
Loaning title to name.
```

RETURN: this will allow a reader to return a book. This will remove the book from the reader and place it back in the library. The stats for both the reader and the library should be updated at this point.

If the title is not in the list of books, you should print the following message and stop processing the command.
```
Error: unknown book title.  
```
If the title is currently in the library, IE not checked out, you should print the following message and stop processing the command
```
Error: title has not been checked out.
```
Otherwise return the book and print the following message.
```
name has returned title.
```

REPORT: produce a report on the reader.

If the reader is not in the reader list, you should print the following message and stop processing the command.
```
Error: unknown reader name.  
```
Otherwise print the following report,
- The persons name (newline)
- A tab
- Books read:
- the book count
- a period and a newline.
- A tab
- Pages read:
- the page count.
- a period and a newline.
- If the user has a book checked out
  - A tab.
  - The current book is:
  - The title.
  - a period and a new line.

Examples:

Dora Lindsay
        Books read: 1.
        Pages read: 1225.
        The current book is: Kidnapped.

Alden Marquez
        Books read: 0.
        Pages read: 0.

STATS: print the statistics for a book.

If the title is not in the list of books, you should print the following message and stop processing the command.
```
Error: unknown book title.  
```
Otherwise print the following report:
- The book title and a newline
- a tab
- by
- the author's name
- A period and a newline
- a tab
- Pages:
- The pages in the book.
- A period and a newline
- a tab
- Total Reads:
- the total number of people who have read the book.
- A period and a newline
- If the book is not present in the library print the following
  - A tab
  - On loan to
  - The name of the reader who has the book.
  - A period and a newline.

Example output

War and Peace
        by Leo Tolstoy.
        Pages: 1225.
        Total Reads: 0.
        On loan to: Dora Lindsay.

Kidnapped
        by Robert Louis Stevenson.
        Pages: 136.
        Total Reads: 1.

PRINT: this will print the list of all books or readers depending on the argument.

Depending on the argument, either print all of the books or all of the readers in the databases.
If an argument other than PEOPLE or BOOKS is encountered, print the following message
```
Error: unknown report type type.
```
Use the formats described in REPORT and STATS

For books, first print

There are bookcount books in the library.
They are:

For people, first print

There are personcount people using the library.
They are:

Examples:

Executing PRINT BOOKS.
There are 3 books in the library.
They are:
War and Peace
        by Leo Tolstoy.
        Pages: 1225.
        Total Reads: 2.
Kidnapped
        by Robert Louis Stevenson.
        Pages: 136.
        Total Reads: 2.
Watership Down
        by Richard Adams.
        Pages: 413.
        Total Reads: 1.

Executing PRINT PEOPLE.
There are 4 people using the library.
They are:
Dora Lindsay
        Books read: 3.
        Pages read: 1774.
Alden Marquez
        Books read: 1.
        Pages read: 136.
Ignacia Pace
        Books read: 1.
        Pages read: 1225.
Hayes Schroeder
        Books read: 0.
        Pages read: 0.

The program should work as follows:

Prompt the user for a configuration file.
- The prompt should be
  - There should be a space following the >
  - After the user enters the file name, print an endl
  - Then print
```
Opening filename.
```
  - You may use the following code
```
do {
    cout << "Enter the name of the configuration file => ";
    cin >> name;
    cout << endl;
    cout << "Opening " << name  << "." << endl; 
} while (not inFile); 
```
  - If the program was unable to open the file, repeat the prompt process. Do not print an error message.
- This file will be format error free and will contain three file names.
  - The name of the file containing books.
  - The name of the file containing readers.
  - The name of a file containing the actions to perform.
- An example configuration file.
  - ```
  books.dat
  names.dat
  commands.dat 
```
Read in the data from the books file.
- This file contains one line per book.
- Each line contains a title, author and page count separated by :
- This file will be format error free.
- An example file is
  - ```
  War and Peace:Leo Tolstoy:1225
  Kidnapped:Robert Louis Stevenson:136
  Watership Down:Richard Adams:413 
```
- Set the stats for all books 0.
- When reading the book file, print the following message
```
Reading books from fileName.
```
- If the number of books is larger than the given limit, for each book that can not be inserted into the array, print the following message
```
Error: can not add title to the library.  It is full.  
```
- If the book file does not exist print the error
```
Error: unable to open the book file filename.  
```
Read in the data from the readers file.
- This file contains one reader per line.
- There are no errors in this file.
- An example file is
  - ```
  Dora Lindsay
  Alden Marquez
  Ignacia Pace
  Hayes Schroeder 
```
- When reading the readers file, print the message
```
Reading people from filename.
```
- If the reader file does not exist print
```
Error: unable to open reader file filename.
```
- If the number of readers is larger than the given limit for each reader that can not be inserted into the reader array print the following message
```
Error: reader list is full.  Unable to add name.
```

Process the actions in the action file.

When an action is executed, print the following
```
Executing action.  
```
For example if the command is "REPORT Alden Marquez", your program should print
```
Executing REPORT Alden Marquez.  
```
Once the action has been executed, your program should print a blank line.
This file contains one action per line as described above.
The file is format error free

An example of this file is

PRINT BOOKS
PRINT PEOPLE
CHECKOUT War and Peace:Dora Lindsay
REPORT Dora Lindsay
STATS War and Peace
RETURN War and Peace
CHECKOUT Kidnapped:Dora Lindsay
CHECKOUT Kidnapped:Alden Marquez
REPORT Dora Lindsay
REPORT Alden Marquez
STATS Kidnapped
RETURN Kidnapped
REPORT Dora Lindsay
REPORT Alden Marquez
STATS Kidnapped
CHECKOUT Watership Down:Dora Lindsay
CHECKOUT Kidnapped:Alden Marquez
CHECKOUT War and Peace:Ignacia Pace
STATS Kidnapped
STATS War and Peace
STATS Watership Down
RETURN Watership Down
RETURN Kidnapped
RETURN War and Peace
REPORT Dora Lindsay
REPORT Alden Marquez
REPORT Ignacia Pace
PRINT BOOKS
PRINT PEOPLE

If a bad action is encountered, print the following message and continue processing the file
```
Error: unknown action action.
```

Sample Data Files

case1.dat a configuration file.
books.dat a sample library file.
names.dat a sample reader file.
commands.dat a sample commands file.
output.txt a sample of what the output should be. Note, the output should be to standard out, not a file.

Notes

Your program should be written so that additional actions can be added easily.
Your code should be modular in design, with small functions.

Other Requirements

The code must employ at least one enumeration type.
This code must compile without errors or warnings on cslab103.

The code must be compiled with the following compiler flags

 -g -O3 -Wpedantic -Wall -Wextra -Wmisleading-indentation -Wunused -Wuninitialized -Wshadow -Wconversion -std=c++17

The project must include a Makefile,
- The makefile must
  - Build the entire project
  - Contain a clean target which removes object files and executables.
- You may use this Makefile
  - Save it in your project directory.
  - Your source code should be called hw6.C or hw6.cpp
- This will produce an executable called hw6
Your code should follow the Local Programming Style Guild for C++

Required Files

A single tar file containing the source code and makefile for this program. Your tar file should not contain executable code (hw6) or any object files (*.o).

To create tar file, follow the Working with the Tape Archive Utility (tar)

Submission

Submit your tar file to the D2L assignment folder Homework 6 by the due date.