Source code for savefilebox.cs

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using System;
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using System.IO;
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using System.Text.RegularExpressions;
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using System.Windows.Forms;
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namespace RobvanderWoude
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{
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	class SaveFileBox
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	{
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		static string progver = "1.00";
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		[STAThread]
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		static int Main( string[] args )
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		{
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			try
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			{
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				using ( SaveFileDialog dialog = new SaveFileDialog( ) )

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				{
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					string filter = "All files (*.*)|*.*";

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					string ext = ".*";
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					string folder = Directory.GetCurrentDirectory( );

					string title = "SaveFileBox,  Version " + progver;

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					bool forceext = false;
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					bool overwrite = false;
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					bool verbose = false;
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					bool forcespec = false;
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					bool promptspec = false;
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					if ( args.Length > 5 )
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					{
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						return WriteError( "Too many command line arguments" );

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					}
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					if ( args.Length > 0 )
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					{
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						filter = args[0];
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						if ( filter == "/?" )
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						{
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							return WriteError( );
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						}
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						ext = Regex.Match( filter, @"(\.[^.]+)$", RegexOptions.IgnoreCase ).Groups[0].ToString( );

						if ( String.IsNullOrWhiteSpace( ext ) )

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						{
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							return WriteError( "Invalid filetype specification" );

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						}
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						// If only "*.ext" is specified, use "ext files (*.ext)|*.ext" instead

						if ( Regex.IsMatch( filter, @"^\*\.(\*|\w+)$" ) )

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						{
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							if ( ext == ".*" )
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							{
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								filter = "All files (*." + ext + ")|*." + ext;

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							}
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							else
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							{
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								filter = ext + " files (*." + ext + ")|*." + ext;

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							}
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						}
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						// Use "All files" filter if not specified

						if ( String.IsNullOrWhiteSpace( filter ) )

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						{
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							filter = "All files (*.*)|*.*";
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						}
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						// Optional second command line argument is start folder

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						if ( args.Length > 1 )
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						{
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							folder = args[1];
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							if ( !Directory.Exists( folder ) )

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							{
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								return WriteError( "Invalid folder \"" + folder + "\"" );

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							}
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							// Optional third command line argument is dialog title

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							if ( args.Length > 2 )
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							{
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								title = args[2];
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								if ( args.Length > 3 )
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								{
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									switch ( args[3].ToUpper( ) )
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									{
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										case "/F":
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											forceext = true;
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											forcespec = true;
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											break;
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										case "/Q":
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											overwrite = true;
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											promptspec = true;
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											break;
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										case "/V":
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											verbose = true;
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											promptspec = true;
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											break;
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										default:
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											return WriteError( "Invalid command line argument(s)" );

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									}
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									if ( args.Length > 4 )
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									{
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										switch ( args[4].ToUpper( ) )
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										{
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											case "/F":
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												if ( forcespec )
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												{
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													return WriteError( "Duplicate command line switch \"/F\"" );

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												}
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												forceext = true;
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												forcespec = true;
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												break;
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											case "/Q":
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												if ( promptspec )
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												{
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													return WriteError( "Duplicate command line switches or invalid combination" );

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												}
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												overwrite = true;
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												promptspec = true;
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												break;
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											case "/V":
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												if ( promptspec )
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												{
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													return WriteError( "Duplicate command line switches or invalid combination" );

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												}
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												verbose = true;
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												promptspec = true;
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												break;
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											default:
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												return WriteError( "Invalid command line argument" );

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										}
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									}
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								}
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							}
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						}
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					}
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					dialog.Filter = filter;
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					dialog.FilterIndex = 1;
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					dialog.InitialDirectory = folder;
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					dialog.AddExtension = forceext;
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					dialog.DefaultExt = ext;
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					dialog.CheckFileExists = false;
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					dialog.CheckPathExists = !overwrite;

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					dialog.CreatePrompt = false;
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					dialog.OverwritePrompt = false;
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					dialog.SupportMultiDottedExtensions = true;

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					dialog.Title = title;
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					dialog.RestoreDirectory = true;
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					if ( dialog.ShowDialog( ) == DialogResult.OK )

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					{
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						string filename = dialog.FileName;

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						if ( forceext )
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						{
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							string newext = Path.GetExtension( filename );

							if ( String.Compare( newext, ext, true ) != 0 )

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							{
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								filename += ext;
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							}
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						}
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						if ( File.Exists( filename ) )
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						{
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							// File exists
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							if ( !overwrite )
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							{
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								string prompt = "The file \"" + Path.GetFileName( filename ) + "\" already exists.\n\nDo you want to replace it?";

								string caption = "Overwrite File?";

								MessageBoxButtons buttons = MessageBoxButtons.YesNo;

								MessageBoxIcon icon = MessageBoxIcon.Warning;

								DialogResult result = MessageBox.Show( prompt, caption, buttons, icon, MessageBoxDefaultButton.Button2 );

								if ( result != DialogResult.Yes )

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								{
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									// Canceled
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									return 2;
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								}
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							}
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							// Overwrite approved
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							Console.WriteLine( filename );
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							return 3;
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						}
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						else
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						{
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							// File does not exist
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							if ( verbose )
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							{
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								string prompt = "The file \"" + Path.GetFileName( filename ) + "\" does not exist.\n\nDo you want to create it?";

								string caption = "Create File?";

								MessageBoxButtons buttons = MessageBoxButtons.YesNo;

								MessageBoxIcon icon = MessageBoxIcon.Question;

								DialogResult result = MessageBox.Show( prompt, caption, buttons, icon, MessageBoxDefaultButton.Button1 );

								if ( result != DialogResult.Yes )

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								{
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									// Canceled
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									return 2;
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								}
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							}
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							// OK
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							Console.WriteLine( filename );
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							return 0;
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						}
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					}
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					else
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					{
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						// Canceled
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						return 2;
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					}
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				}
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			}
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			catch ( Exception e )
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			{
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				return WriteError( e.Message );
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			}
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		}
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		public static int WriteError( string errorMessage = null )

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		{
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			/*
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			SaveFileBox.exe,  Version 1.00
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			Batch tool to present a Save File dialog and return the selected file path

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```

			Usage:  SAVEFILEBOX  "filetypes"  "startfolder"  "title"  options

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```

			Where:  filetypes    file type(s) in format "description (*.ext)|*.ext"

			                     or just "*.ext" (default: "All files (*.*)|*.*")

			        startfolder  the initial folder the dialog will show on opening

			                     (default: current directory)

			        title        the caption in the dialog's title bar

			                     (default: program name and version)

			        options      /F    Force specified extension

			                     /Q    Quiet mode: do not check if the file exists

			                     /V    Verbose mode: prompt for confirmation

			                     (default: prompt only if file exists)

```
 
```

			Notes:  All command line arguments are optional, but each argument requires

			        the ones preceeding it, e.g. "startfolder" requires "filetypes" but

			        not necessarily "title" and options.

			        Options /Q and /V are mutually exclusive.

			        If the filetypes filter is in "*.ext" format, "ext files (*.ext)|*.ext"

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			        will be used instead.
```

			        The full path of the selected file is written to Standard Output

			        if OK was clicked, or an empty string if Cancel was clicked.

			        The return code will be 0 on success, 1 in case of (command line)

			        errors, 2 on Cancel, 3 if not in Quiet mode and file exists.

```
 
```
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			Written by Rob van der Woude
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			http://www.robvanderwoude.com
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			*/
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```
 
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			if ( !string.IsNullOrWhiteSpace( errorMessage ) )

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			{
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				Console.Error.WriteLine( );
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				Console.ForegroundColor = ConsoleColor.Red;

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				Console.Error.Write( "ERROR: " );
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				Console.ForegroundColor = ConsoleColor.White;

				Console.Error.WriteLine( errorMessage );

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				Console.ResetColor( );
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			}
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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "SaveFileBox.exe,  Version {0}", progver );

			Console.Error.WriteLine( "Batch tool to present a Save File dialog and return the selected file path" );

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			Console.Error.WriteLine( );
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			Console.Error.Write( "Usage:  " );
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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "SAVEFILEBOX  \"filetypes\"  \"startfolder\"  \"title\"  options" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( );
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			Console.Error.Write( "Where:  " );
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			Console.ForegroundColor = ConsoleColor.White;

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			Console.Error.Write( "filetypes" );
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			Console.ResetColor( );
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			Console.Error.Write( "    file type(s) in format " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "\"description (*.ext)|*.ext\"" );

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			Console.ResetColor( );
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			Console.Error.Write( "                     or just " );

			Console.ForegroundColor = ConsoleColor.White;

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			Console.Error.Write( "\"*.ext\"" );
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			Console.ResetColor( );
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			Console.Error.Write( " (default: " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "\"All files (*.*)|*.*\"" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( ")" );
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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "        startfolder" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "  the initial folder the dialog will show on opening" );

			Console.Error.WriteLine( "                     (default: current directory)" );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "        title" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "        the caption in the dialog's title bar" );

			Console.Error.WriteLine( "                     (default: \"SaveFileBox,  Version {0})\"", progver );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "        options      /F    F" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "orce specified extension" );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "                     /Q    Q" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "uiet mode: do not check if the file exists" );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "                     /V    V" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "erbose mode: prompt for confirmation" );

			Console.Error.WriteLine( "                     (default: prompt only if file exists)" );

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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "Notes:  All command line arguments are optional, but each argument requires" );

			Console.Error.Write( "        the ones preceeding it, e.g. " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "\"startfolder\"" );

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			Console.ResetColor( );
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			Console.Error.Write( " requires " );
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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "\"filetypes\"" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( " but" );
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			Console.Error.Write( "        not necessarily " );

			Console.ForegroundColor = ConsoleColor.White;

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			Console.Error.Write( "\"title\"" );
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			Console.ResetColor( );
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			Console.Error.Write( " and " );
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			Console.ForegroundColor = ConsoleColor.White;

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			Console.Error.Write( "options" );
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			Console.ResetColor( );
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			Console.Error.WriteLine( "." );
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			Console.Error.Write( "        Options " );

			Console.ForegroundColor = ConsoleColor.White;

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			Console.Error.Write( "/Q" );
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			Console.ResetColor( );
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			Console.Error.Write( " and " );
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			Console.ForegroundColor = ConsoleColor.White;

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			Console.Error.Write( "/V" );
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			Console.ResetColor( );
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			Console.Error.WriteLine( " are mutually exclusive." );

			Console.Error.Write( "        If the filetypes filter is in " );

			Console.ForegroundColor = ConsoleColor.White;

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			Console.Error.Write( "\"*.ext\"" );
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			Console.ResetColor( );
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			Console.Error.Write( " format, " );
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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "\"ext files (*.ext)|*.ext\"" );

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			Console.ResetColor( );
```

			Console.Error.WriteLine( "        will be used instead." );

			Console.Error.WriteLine( "        The full path of the selected file is written to Standard Output" );

			Console.Error.WriteLine( "        if OK was clicked, or an empty string if Cancel was clicked." );

			Console.Error.WriteLine( "        The return code will be 0 on success, 1 in case of (command line)" );

			Console.Error.WriteLine( "        errors, 2 on Cancel, 3 if not in Quiet mode and file exists." );

```
			Console.Error.WriteLine( );
```

			Console.Error.WriteLine( "Written by Rob van der Woude" );

			Console.Error.WriteLine( "http://www.robvanderwoude.com" );

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			return 1;
```
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		}
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	}
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}
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