/// <summary>
/// Validates that a string is a valid filename, and throws appropriate warnings/errors if not
/// </summary>
/// <param name="commandlineSwitch">The commandline switch we're parsing (for error display purposes).</param>
/// <param name="messageHandler">The messagehandler to report warnings/errors to.</param>
/// <param name="args">The list of strings to check.</param>
/// <param name="index">The index (in args) of the commandline parameter to be parsed.</param>
/// <returns>The string if it is valid, null if it is invalid.</returns>
public static string GetFile(string commandlineSwitch, ConsoleMessageHandler messageHandler, string[] args, int index)
{
commandlineSwitch = String.Concat("-", commandlineSwitch);
if (!IsValidArg(args, index))
{
messageHandler.Display(null, WixErrors.FilePathRequired(commandlineSwitch));
return(null);
}
if (Directory.Exists(args[index]))
{
messageHandler.Display(null, WixErrors.ExpectedFileGotDirectory(commandlineSwitch, args[index]));
return(null);
}
return(VerifyPath(messageHandler, args[index]));
}
/// <summary>
/// Validates that a commandline parameter is a valid file or directory name, and throws appropriate warnings/errors if not
/// </summary>
/// <param name="messageHandler">The messagehandler to report warnings/errors to.</param>
/// <param name="path">The path to test.</param>
/// <param name="allowPrefix">Indicates if a colon-delimited prefix is allowed.</param>
/// <returns>The full path if it is valid, null if it is invalid.</returns>
public static string VerifyPath(ConsoleMessageHandler messageHandler, string path, bool allowPrefix)
{
string fullPath;
if (0 <= path.IndexOf('\"'))
{
messageHandler.Display(null, WixErrors.PathCannotContainQuote(path));
return(null);
}
try
{
string prefix = null;
if (allowPrefix)
{
int prefixLength = path.IndexOf('=') + 1;
if (0 != prefixLength)
{
prefix = path.Substring(0, prefixLength);
path = path.Substring(prefixLength);
}
}
if (String.IsNullOrEmpty(prefix))
{
fullPath = Path.GetFullPath(path);
}
else
{
fullPath = String.Concat(prefix, Path.GetFullPath(path));
}
}
catch (Exception e)
{
messageHandler.Display(null, WixErrors.InvalidCommandLineFileName(path, e.Message));
return(null);
}
return(fullPath);
}