#region Arthea License
/***********************************************************************
* Arthea MUD by R. Jennings (2007) http://arthea.googlecode.com/ *
* By using this code you comply with the Artistic and GPLv2 Licenses. *
***********************************************************************/
#endregion
using Arthea.Connections;
namespace Arthea.Creation
{
/// <summary>
/// Implements methods for string editor
/// </summary>
public class StringEditor
{
#region [rgn] Fields (2)
private Connection connection;
private String text;
#endregion [rgn]
#region [rgn] Properties (1)
/// <summary>
/// Gets or sets the text.
/// </summary>
/// <value>The text.</value>
public String Text
{
get { return text; }
set { text = value; }
}
#endregion [rgn]
#region [rgn] Methods (9)
// [rgn] Public Methods (3)
/// <summary>
/// Starts the string editor in append mode.
/// </summary>
/// <param name="con">The con.</param>
/// <param name="str">The text.</param>
/// <returns></returns>
public StringEditor Append(Connection con, String str)
{
text = str;
connection = con;
Welcome();
connection.Write(str);
if (!str.EndsWith(System.Environment.NewLine))
connection.WriteLine();
return this;
}
/// <summary>
/// Composes this string.
/// </summary>
/// <param name="input">The input.</param>
public void Compose(String input)
{
if (input[0] == '/')
{
String argument = input.Substring(2);
switch (input[1])
{
case 'q':
connection.Composing = null;
break;
case 'c':
text = string.Empty;
connection.WriteLine("Text cleared.");
break;
case 's':
ShowLines();
break;
case 'S':
connection.WriteLine(text);
break;
case 'r':
String arg1 = argument.FirstArg();
if (!arg1)
{
connection.WriteLine("Usage: /r 'old string' 'new string'");
}
else
{
text = text.Replace(arg1, argument.FirstArg());
}
break;
case 'e':
int line;
if (!int.TryParse(argument.FirstArg(), out line))
{
connection.WriteLine("You must specify a line number.");
break;
}
text = LineReplace(line, argument);
break;
case 'i':
if (!int.TryParse(argument.FirstArg(), out line))
{
connection.WriteLine("You must specify a line number.");
break;
}
text = LineAdd(line, argument);
break;
case 'd':
if (int.TryParse(argument.FirstArg(), out line))
{
text = LineDelete(line);
}
else
{
text = DeleteLastLine();
}
break;
case 'h':
connection.WriteLine("Commands:");
connection.WriteLine("/h - displays this help");
connection.WriteLine("/e <line> [text] - replaces line number with text");
connection.WriteLine("/i <line> [text] - inserts text at line number");
connection.WriteLine("/d [line] - deletes the last line or the specified line");
connection.WriteLine("/r <old> [new] - replaces old string with new string");
connection.WriteLine("/c - clears the text");
connection.WriteLine("/s - shows the text with line numbers");
connection.WriteLine("/S - shows the text without line numbers");
connection.WriteLine("/q - quits the editor");
break;
default:
connection.WriteLine("Invalid command. Type /h for help.");
break;
}
}
else
{
text += input;
text += System.Environment.NewLine;
}
}
/// <summary>
/// Starts the string editor in edit mode.
/// </summary>
/// <param name="con">The con.</param>
/// <param name="str">The text.</param>
/// <returns></returns>
public StringEditor Edit(Connection con, String str)
{
str = string.Empty;
text = str;
connection = con;
Welcome();
return this;
}
// [rgn] Private Methods (6)
private String DeleteLastLine()
{
string[] lines = text.GetLines();
String newText = new String();
for (int i = 0; i < lines.Length - 1; i++)
{
newText += lines[i];
newText += System.Environment.NewLine;
}
return newText;
}
private String LineAdd(int line, String addStr)
{
string[] lines = text.GetLines();
String newText = new String();
for (int i = 0; i < lines.Length; i++)
{
if ((i + 1) == line)
newText += addStr;
newText += lines[i];
newText += System.Environment.NewLine;
}
return newText;
}
private String LineDelete(int line)
{
string[] lines = text.GetLines();
String newText = new String();
for (int i = 0; i < lines.Length; i++)
{
if ((i + 1) != line)
{
newText += lines[i];
newText += System.Environment.NewLine;
}
}
return newText;
}
private String LineReplace(int line, String addStr)
{
string[] lines = text.GetLines();
String newText = new String();
for (int i = 0; i < lines.Length; i++)
{
if ((i + 1) == line)
newText += addStr;
else
newText += lines[i];
newText += System.Environment.NewLine;
}
return newText;
}
private void ShowLines()
{
string[] lines = text.GetLines();
for (int i = 0; i < lines.Length; i++)
{
connection.WriteLine("{0,2}. {1}", i + 1, lines[i]);
}
}
private void Welcome()
{
connection.WriteLine("Entering the text editor. Type /? for help and /q to quit.");
}
#endregion [rgn]
}
}
