Skip to content

string-processing-system [COMANDANTE] #25

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
RalphDante wants to merge 10 commits into
base: main
Choose a base branch
from
Open

string-processing-system [COMANDANTE] #25

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
10 commits
Select commit Hold shift + click to select a range
2eb6111
Create StringService.cs
RalphDante Feb 28, 2026
479680d
Create StringView.cs
RalphDante Feb 28, 2026
ed880be
Create Program.cs
RalphDante Feb 28, 2026
c88e5ef
Delete StringService.cs
RalphDante Feb 28, 2026
4de924f
Delete StringView.cs
RalphDante Feb 28, 2026
d0d2bbc
Create StringService.cs
RalphDante Feb 28, 2026
a21fbd0
Create StringView.cs
RalphDante Feb 28, 2026
be8066e
Add main program to run StringView
RalphDante Feb 28, 2026
82a2313
Add StringService class with text manipulation methods
RalphDante Feb 28, 2026
3edb7d3
Implement StringView class for text processing
RalphDante Feb 28, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 13 additions & 0 deletions Program.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
using StringProcessingApp.Views;

namespace StringProcessingApp
{
class Program
{
static void Main(string[] args)
{
StringView view = new StringView();
view.Run();
}
}
}
89 changes: 89 additions & 0 deletions Services/StringService.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,89 @@
namespace StringProcessingApp.Services
{
public class StringService
{
private string _currentText;
private string _originalText;

public StringService()
{
_currentText = string.Empty;
_originalText = string.Empty;
}

public void SetText(string text)
{
_currentText = text;
if (string.IsNullOrEmpty(_originalText))
{
_originalText = text;
}
}

public string GetCurrentText()
{
return _currentText;
}

public string ConvertToUppercase()
{
_currentText = _currentText.ToUpper();
return _currentText;
}

public string ConvertToLowercase()
{
_currentText = _currentText.ToLower();
return _currentText;
}

public int CountCharacters()
{
return _currentText.Length;
}

public bool ContainsWord(string word)
{
return _currentText.Contains(word);
}

public string ReplaceWord(string oldWord, string newWord)
{
_currentText = _currentText.Replace(oldWord, newWord);
return _currentText;
}

public string ExtractSubstring(int startIndex, int length)
{
if (startIndex < 0 || startIndex >= _currentText.Length)
{
return "Invalid start index.";
}

if (startIndex + length > _currentText.Length)
{
length = _currentText.Length - startIndex;
}

_currentText = _currentText.Substring(startIndex, length);
return _currentText;
}

public string TrimSpaces()
{
_currentText = _currentText.Trim();
return _currentText;
}

public string ResetText()
{
_currentText = _originalText;
return _currentText;
}

public bool IsTextEmpty()
{
return string.IsNullOrEmpty(_currentText);
}
}
}
252 changes: 252 additions & 0 deletions Views/StringView.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,252 @@
using System;

using StringProcessingApp.Services;

namespace StringProcessingApp.Views
{
public class StringView
{
private readonly StringService _stringService;

public StringView()
{
_stringService = new StringService();
}

public void Run()
{
bool running = true;

while (running)
{
DisplayMenu();
string choice = Console.ReadLine();
Console.WriteLine();

switch (choice)
{
case "1":
EnterText();
break;
case "2":
ViewCurrentText();
break;
case "3":
ConvertToUppercase();
break;
case "4":
ConvertToLowercase();
break;
case "5":
CountCharacters();
break;
case "6":
CheckContainsWord();
break;
case "7":
ReplaceWord();
break;
case "8":
ExtractSubstring();
break;
case "9":
TrimSpaces();
break;
case "10":
ResetText();
break;
case "11":
running = false;
Console.WriteLine("Thank you for using String Processing System!");
break;
default:
Console.WriteLine("❌ Invalid option. Please try again.");
break;
}

if (running)
{
Console.WriteLine("\nPress any key to continue...");
Console.ReadKey();
Console.Clear();
}
}
}

private void DisplayMenu()
{
Console.WriteLine("═══════════════════════════════════════");
Console.WriteLine(" MAIN MENU");
Console.WriteLine("═══════════════════════════════════════");
Console.WriteLine(" 1. Enter Text");
Console.WriteLine(" 2. View Current Text");
Console.WriteLine(" 3. Convert to UPPERCASE");
Console.WriteLine(" 4. Convert to lowercase");
Console.WriteLine(" 5. Count Characters");
Console.WriteLine(" 6. Check if Contains Word");
Console.WriteLine(" 7. Replace Word");
Console.WriteLine(" 8. Extract Substring");
Console.WriteLine(" 9. Trim Spaces");
Console.WriteLine(" 10. Reset Text");
Console.WriteLine(" 11. Exit");
Console.WriteLine("═══════════════════════════════════════");
Console.Write("Enter your choice: ");
}

private void EnterText()
{
Console.Write("Enter text: ");
string text = Console.ReadLine();
_stringService.SetText(text);
Console.WriteLine("✓ Text entered successfully!");
}

private void ViewCurrentText()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
}
else
{
Console.WriteLine("Current Text:");
Console.WriteLine($"─────────────────────────────────────");
Console.WriteLine(_stringService.GetCurrentText());
Console.WriteLine($"─────────────────────────────────────");
}
}

private void ConvertToUppercase()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

string result = _stringService.ConvertToUppercase();
Console.WriteLine("✓ Converted to UPPERCASE:");
Console.WriteLine(result);
}

private void ConvertToLowercase()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

string result = _stringService.ConvertToLowercase();
Console.WriteLine("✓ Converted to lowercase:");
Console.WriteLine(result);
}

private void CountCharacters()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

int count = _stringService.CountCharacters();
Console.WriteLine($"✓ Character count: {count}");
}

private void CheckContainsWord()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

Console.Write("Enter word to search: ");
string word = Console.ReadLine();

bool contains = _stringService.ContainsWord(word);
if (contains)
{
Console.WriteLine($"✓ The text CONTAINS the word '{word}'");
}
else
{
Console.WriteLine($"✗ The text DOES NOT contain the word '{word}'");
}
}

private void ReplaceWord()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

Console.Write("Enter word to replace: ");
string oldWord = Console.ReadLine();
Console.Write("Enter new word: ");
string newWord = Console.ReadLine();

string result = _stringService.ReplaceWord(oldWord, newWord);
Console.WriteLine("✓ Word replaced successfully:");
Console.WriteLine(result);
}

private void ExtractSubstring()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

Console.WriteLine($"Current text length: {_stringService.CountCharacters()}");
Console.Write("Enter start index (0-based): ");

if (!int.TryParse(Console.ReadLine(), out int startIndex))
{
Console.WriteLine("❌ Invalid input. Please enter a number.");
return;
}

Console.Write("Enter length: ");
if (!int.TryParse(Console.ReadLine(), out int length))
{
Console.WriteLine("❌ Invalid input. Please enter a number.");
return;
}

string result = _stringService.ExtractSubstring(startIndex, length);
Console.WriteLine("✓ Extracted substring:");
Console.WriteLine(result);
}

private void TrimSpaces()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

string result = _stringService.TrimSpaces();
Console.WriteLine("✓ Spaces trimmed:");
Console.WriteLine($"'{result}'");
}

private void ResetText()
{
if (_stringService.IsTextEmpty())
{
Console.WriteLine("⚠ No text entered yet. Please enter text first.");
return;
}

string result = _stringService.ResetText();
Console.WriteLine("✓ Text reset to original:");
Console.WriteLine(result);
}
}
}