public static bool IsValidRelativePath(string path, out string reason)
{
reason = string.Empty;
if (path == null)
{
reason = "Input path string is null";
return(false);
}
if (path.Length == 0)
{
reason = "Empty string for path";
return(false);
}
if (!InternalStringHelper.CanOnlyBeARelativePath(path))
{
reason = "An absolute path was inputed where a relative path was expected.";
return(false);
}
path = InternalStringHelper.NormalizePath(path);
if (InternalStringHelper.ContainsInnerSpecialDir(path))
{
string unusedPath;
if (!InternalStringHelper.TryResolveInnerSpecialDir(path, out unusedPath, out reason))
{
return(false);
}
}
return(true);
}
//----------------------------------------
//
// Path String Validity
//
//----------------------------------------
public static bool IsValidAbsolutePath(string path, out string reason)
{
reason = string.Empty;
if (path == null)
{
reason = "Input path string is null";
return(false);
}
if (path.Length == 0)
{
reason = "Empty string for path";
return(false);
}
if (InternalStringHelper.CanOnlyBeARelativePath(path))
{
reason = "A relative path was inputed where an absolute path was expected.";
return(false);
}
if (InternalStringHelper.IsUniformRessourceLocatorPath(path))
{
reason = "URN (UniformRessourceLocator) paths are not supported.";
return(false);
}
if (!InternalStringHelper.BeginsWithASingleLetterDrive(path))
{
reason = "The absolute path doesn't begin with a single letter drive followed by ':'.";
return(false);
}
path = InternalStringHelper.NormalizePath(path);
if (InternalStringHelper.ContainsInnerSpecialDir(path))
{
string unusedPath;
if (!InternalStringHelper.TryResolveInnerSpecialDir(path, out unusedPath, out reason))
{
return(false);
}
}
return(true);
}
//
// Ctor
//
public BasePath(string path, bool isAbsolute)
{
if (path == null)
{
throw new ArgumentNullException("Input path string is null");
}
// No check fro empty paths
if (path.Length == 0)
{
throw new ArgumentException(path, "Input path string is empty");
}
path = InternalStringHelper.NormalizePath(path);
string errorReason;
if (isAbsolute)
{
PathHelper.IsValidAbsolutePath(path, out errorReason);
}
else
{
PathHelper.IsValidRelativePath(path, out errorReason);
}
if (errorReason.Length > 0)
{
throw new ArgumentException(path, errorReason);
}
// Try remove eventual InnerSpecialDir
if (InternalStringHelper.ContainsInnerSpecialDir(path))
{
InternalStringHelper.TryResolveInnerSpecialDir(path, out path, out errorReason);
}
Debug.Assert(errorReason.Length == 0); // The error test has already been done in IsValidXXXPath()
Debug.Assert(path != null && path.Length > 0);
m_Path = path;
}