public static string ReplaceInvalidPathChars(string path, CharReplacementEvaluatorDelegate replacementEvaluator, InvalidPathCharsOptions options = InvalidPathCharsOptions.Default)
{
string rootPath = string.Empty;
IEnumerable <char> invalidCharacters = Enumerable.Empty <char>();
if (options.HasFlag(InvalidPathCharsOptions.ReplaceInvalidPathChars))
{
invalidCharacters = invalidCharacters.Concat(System.IO.Path.GetInvalidPathChars());
}
if (options.HasFlag(InvalidPathCharsOptions.ReplaceInvalidFileNameChars))
{
invalidCharacters = invalidCharacters.Concat(System.IO.Path.GetInvalidFileNameChars());
}
if (options.HasFlag(InvalidPathCharsOptions.PreserveDirectoryStructure))
{
// The root of the path might contain characters that would be invalid file name characters (e.g. ':' in "C:\").
// In order to preserve the root path information, we'll remove it for now and add it back later.
rootPath = System.IO.Path.GetPathRoot(ReplaceInvalidPathChars(path, InvalidPathCharsOptions.ReplaceInvalidPathChars));
path = path.Substring(rootPath.Length);
invalidCharacters = invalidCharacters.Where(c => c != System.IO.Path.DirectorySeparatorChar && c != System.IO.Path.AltDirectorySeparatorChar);
}
HashSet <char> invalidCharacterLookup = new HashSet <char>(invalidCharacters);
StringBuilder pathBuilder = new StringBuilder();
foreach (char c in path.ToCharArray())
{
if (invalidCharacterLookup.Contains(c))
{
pathBuilder.Append(replacementEvaluator(c));
}
else
{
pathBuilder.Append(c);
}
}
path = pathBuilder.ToString();
if (!string.IsNullOrEmpty(rootPath))
{
path = System.IO.Path.Combine(rootPath, path);
}
return(path);
}
public static string ReplaceInvalidPathChars(string path, string replacement, InvalidPathCharsOptions options = InvalidPathCharsOptions.Default)
{
return(ReplaceInvalidPathChars(path, _ => replacement, options));
}
public static string ReplaceInvalidPathChars(string path, ICharReplacementEvaluator replacementEvaluator, InvalidPathCharsOptions options = InvalidPathCharsOptions.Default)
{
return(ReplaceInvalidPathChars(path, replacementEvaluator.Replace, options));
}
public static string ReplaceInvalidPathChars(string path, InvalidPathCharsOptions options = InvalidPathCharsOptions.Default)
{
return(ReplaceInvalidPathChars(path, "_", options));
}
