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Loading settings.

★★☆

Many applications read and write settings into an initialisation (ini) file. Typically the data in the file is structured into blocks identified with square brackets. Each setting has a name, followed by an equal sign, followed by the data. E.g. in the example below, port is a setting and the data is 143.

[modified by]
name=Dave Hillyard

[database]
; use IP address in case network name resolution is not working
server=192.0.2.62
port=143
ini file

Make

Write a program that reads the contents of a text file as shown above and outputs the data contained within it in the format:

Last modified by: Dave Hillyard
IP address: 192.0.2.62
Port number: 143

Success Criteria

Remember to add a comment before a subprogram, selection or iteration statement to explain its purpose.

Complete the subprogram called input_settings that:

  1. Attempts to open a file called settings.ini. If the file is not found the message, "settings.ini file not found." is output and no further processing takes place.
  2. Reads in each line of data in the file.
  3. Separates the line of data into two parts. The part before an equal sign (the attribute) and a part after an equal sign (data). If the line is not a data attribute, it will only have one part and is ignored.
  4. Stores the values for modified by, server/ip address and port settings and output their values.

Note the data attributes can be anywhere in the file, not necessarily in the order presented above.

Complete the main program so that:

  1. The input_settings function is called.

Typical inputs and outputs from the program would be:

File contents for settings.ini:

[modified by]
name=Dave Hillyard

[database]
; use IP address in case network name resolution is not working
server=192.0.2.62
port=143

Output:

Last modified by: Dave Hillyard
IP address: 192.0.2.62
Port number: 143
🆘 If you're really stuck, use this Parsons code sorting exercise
Complete program
// ini file program

using System;
using System.IO;

class Submission
{
---
    // -------------------------
    // Subprograms
    // -------------------------
---
    static void input_settings()
    {
---
        string file_name = "settings.ini";
        string modified = "";
        string ip = "";
        string port = "";
---
        // check file exists
        try
        {
---
            StreamReader file = new StreamReader(file_name);
---
            // Process each line in the file
            string line;
            while ((line = file.ReadLine()) != null)
            {
---
                line = line.Trim();
                // Split data into a list, separated by an equal sign
                string[] data = line.Split('=');
---
                // If there are two items in the list, match the first item
                if (data.Length > 1)
                {
---
                    // Set the variable to be the second item
                    switch (data[0].Trim())
                    {
---
                        case "name":
                            modified = data[1].Trim();
                            break;
                        case "server":
                            ip = data[1].Trim();
                            break;
                        case "port":
                            port = data[1].Trim();
                            break;
---
                    }
---
                }
---
            }
---
            file.Close();
            Console.WriteLine($"Last modified by: {modified}");
            Console.WriteLine($"IP address: {ip}");
            Console.WriteLine($"Port number: {port}");
---
        }
---
        catch (FileNotFoundException)
        {
---
            Console.WriteLine("settings.ini file not found.");
---
        }
---
    }


---
    // -------------------------
    // Main program
    // -------------------------
    public static void Main(string[] args)
    {
---
        input_settings();
---
    }
---
}