public static Path CalculateFullPath(Path currentLocation, Path changeCommand)
{
changeCommand = (changeCommand ?? string.Empty).NormalizeSlashes();
currentLocation = currentLocation.NormalizeSlashes();
bool applyParts = false;
Path resultPath;
// use the input 'changeCommand' path if it's
// 'rooted' otherwise we go from the currentLocation
if (changeCommand.HasDrive())
{
// windows case where changeCommand == "/" or "\" but the currentLocation has a "C:" drive
string currentLocationDrive = currentLocation.GetDrive();
if (changeCommand.StartsWithSlash() && !changeCommand.GetDrive().Equals(currentLocationDrive, StringComparison.InvariantCultureIgnoreCase))
{
resultPath = new Path(currentLocation.CorrectSlash, currentLocation.WrongSlash, string.Format("{0}:{1}", currentLocationDrive, changeCommand));
}
else
{
resultPath = changeCommand;
}
}
else
{
applyParts = true;
resultPath = currentLocation;
}
var correctSeparator = Char.Parse(currentLocation.CorrectSlash);
var changeParts = changeCommand.ToString().Split(correctSeparator).Where(s => !string.IsNullOrEmpty(s));
foreach (var part in changeParts)
{
// ignore single dot as it does nothing...
if (part == ".")
{
continue;
}
// ignore trying to go up a dir from the root dir
if (part == ".." && resultPath.IsRootPath())
{
continue;
}
if (part == "..")
{
resultPath = resultPath.GetParentPath(currentLocation.GetDrive());
}
else if (applyParts)
{
resultPath = resultPath.Combine(part);
}
}
return resultPath.ApplyDriveSlash();
}
public static Path CalculateFullPath(Path currentLocation, Path changeCommand)
{
changeCommand = (changeCommand ?? string.Empty).NormalizeSlashes();
currentLocation = currentLocation.NormalizeSlashes();
bool applyParts = false;
Path resultPath;
// use the input 'changeCommand' path if it's
// 'rooted' otherwise we go from the currentLocation
if (changeCommand.HasDrive())
{
// windows case where changeCommand == "/" or "\" but the currentLocation has a "C:" drive
string currentLocationDrive = currentLocation.GetDrive();
if (changeCommand.StartsWithSlash() && !changeCommand.GetDrive().Equals(currentLocationDrive, StringComparison.InvariantCultureIgnoreCase))
{
resultPath = new Path(currentLocation.CorrectSlash, currentLocation.WrongSlash, string.Format("{0}:{1}", currentLocationDrive, changeCommand));
}
else
{
resultPath = changeCommand;
}
}
else
{
applyParts = true;
resultPath = currentLocation;
}
var correctSeparator = Char.Parse(currentLocation.CorrectSlash);
var changeParts = changeCommand.ToString().Split(correctSeparator).Where(s => !string.IsNullOrEmpty(s));
foreach (var part in changeParts)
{
// ignore single dot as it does nothing...
if (part == ".")
{
continue;
}
// ignore trying to go up a dir from the root dir
if (part == ".." && resultPath.IsRootPath())
{
continue;
}
if (part == "..")
{
resultPath = resultPath.GetParentPath(currentLocation.GetDrive());
}
else if (applyParts)
{
resultPath = resultPath.Combine(part);
}
}
return(resultPath.ApplyDriveSlash());
}
public Path Combine(Path child)
{
var parent = this;
if (string.IsNullOrEmpty(parent) && string.IsNullOrEmpty(child))
{
return(CorrectSlash); // root
}
if (string.IsNullOrEmpty(parent) && !string.IsNullOrEmpty(child))
{
return(child.NormalizeSlashes());
}
parent = parent.NormalizeSlashes();
if (!string.IsNullOrEmpty(parent) && string.IsNullOrEmpty(child))
{
if (parent.EndsWithSlash())
{
return(parent);
}
else
{
return(parent.AppendSlashAtEnd());
}
}
child = child.NormalizeSlashes();
var builder = new System.Text.StringBuilder(parent);
if (!parent.EndsWithSlash())
{
builder.Append(CorrectSlash);
}
// Make sure we do not add two \
if (child.StartsWithSlash())
{
builder.Append(child, 1, child.Length - 1);
}
else
{
builder.Append(child);
}
return(new Path(CorrectSlash, WrongSlash, builder.ToString()));
}
public Path Combine(Path child)
{
var parent = this;
if (string.IsNullOrEmpty(parent) && string.IsNullOrEmpty(child))
{
return child;
}
if (string.IsNullOrEmpty(parent) && !string.IsNullOrEmpty(child))
{
return child.NormalizeSlashes();
}
parent = parent.NormalizeSlashes();
if (!string.IsNullOrEmpty(parent) && string.IsNullOrEmpty(child))
{
if (parent.EndsWithSlash())
{
return parent;
}
else
{
return parent.AppendSlashAtEnd();
}
}
child = child.NormalizeSlashes();
var builder = new System.Text.StringBuilder(parent);
if (!parent.EndsWithSlash())
builder.Append(CorrectSlash);
// Make sure we do not add two \
if (child.StartsWithSlash())
{
builder.Append(child, 1, child.Length - 1);
}
else
{
builder.Append(child);
}
return new Path(CorrectSlash, WrongSlash, builder.ToString());
}
private bool PathIsAbsolute(Path path)
{
string drive = null;
if (path.TryGetDriveName(out drive))
{
// TODO: workaround to be removed when we completeley remove the Path class and
// use PathIntrinsics instead
if (System.IO.Path.DirectorySeparatorChar == '\\' && path.StartsWithSlash())
{
return false;
}
return true;
}
return false;
}