} // special for empty
protected FilePath(string path, bool isAbsolute) : base(path, isAbsolute)
{
if (!InternalStringHelper.HasParentDir(this.Path))
{
throw new ArgumentException(this.Path, @"The file path has no parent directory.");
}
}
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);
}
protected static string GetAbsolutePathFrom(DirectoryPathAbsolute pathFrom, BasePath pathTo)
{
Debug.Assert(pathTo.IsRelativePath);
/*if (pathTo.PathMode == PathMode.Absolute) {
* throw new ArgumentException(@"Cannot call GetAbsolutePath() on a path already absolute.
* PathFrom = """ + pathFrom.Path + @"""
* PathTo = """ + pathTo.Path + @"""");
* }*/
// Only work with Directory
if (pathTo.IsFilePath)
{
pathTo = pathTo.ParentDirectoryPath;
}
return(InternalStringHelper.GetAbsolutePath(pathFrom.Path, pathTo.Path));
}
//----------------------------------------
//
// 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;
}
//
// Relative/absolute
//
protected static string GetPathRelative(DirectoryPathAbsolute pathFrom, BasePath pathTo)
{
Debug.Assert(pathTo.IsAbsolutePath);
/*if (pathTo.PathMode == PathMode.Relative) {
* throw new ArgumentException(@"Cannot input a relative path to GetPathRelativeTo().
* PathFrom = """ + pathFrom.Path + @"""
* PathTo = """ + pathTo.Path + @"""");
* }*/
if (string.Compare(pathFrom.DriveProtected, pathTo.DriveProtected, true) != 0)
{
throw new ArgumentException(@"Cannot compute relative path from 2 paths that are not on the same drive
PathFrom = """ + pathFrom.Path + @"""
PathTo = """ + pathTo.Path + @"""");
}
// Only work with Directory
if (pathTo.IsFilePath)
{
pathTo = pathTo.ParentDirectoryPath;
}
return(InternalStringHelper.GetPathRelativeTo(pathFrom.Path, pathTo.Path));
}
