private static MutableString /*!*/ TrimTrailingSlashes(MutableString /*!*/ path)
{
int offset = path.Length - 1;
while (offset > 0)
{
if (path.GetChar(offset) != '/' && path.GetChar(offset) != '\\')
{
break;
}
--offset;
}
return(path.GetSlice(0, offset + 1));
}
public MutableString /*!*/ GetSlice(int start)
{
return(_string.GetSlice(start));
}
// Expand directory path - these cases exist:
//
// 1. Empty string or nil means return current directory
// 2. ~ with non-existent HOME directory throws exception
// 3. ~, ~/ or ~\ which expands to HOME
// 4. ~foo is left unexpanded
// 5. Expand to full path if path is a relative path
//
// No attempt is made to determine whether the path is valid or not
// Returned path is always canonicalized to forward slashes
private static MutableString /*!*/ ExpandPath(RubyContext /*!*/ context, MutableString /*!*/ path)
{
PlatformAdaptationLayer pal = context.DomainManager.Platform;
int length = path.Length;
try {
if (path == null || length == 0)
{
return(Glob.CanonicalizePath(MutableString.Create(Directory.GetCurrentDirectory())));
}
if (length == 1 && path.GetChar(0) == '~')
{
return(Glob.CanonicalizePath(MutableString.Create(Path.GetFullPath(pal.GetEnvironmentVariable("HOME")))));
}
if (path.GetChar(0) == '~' && (path.GetChar(1) == Path.DirectorySeparatorChar || path.GetChar(1) == Path.AltDirectorySeparatorChar))
{
string homeDirectory = pal.GetEnvironmentVariable("HOME");
return(Glob.CanonicalizePath(length < 3 ? MutableString.Create(homeDirectory) : MutableString.Create(Path.Combine(homeDirectory, path.GetSlice(2).ConvertToString()))));
}
else
{
return(Glob.CanonicalizePath(MutableString.Create(Path.GetFullPath(path.ConvertToString()))));
}
} catch (Exception e) {
// Re-throw exception as a reasonable Ruby exception
throw new Errno.InvalidError(path.ConvertToString(), e);
}
}
public MutableString GetValue()
{
return(_match.Success ? _originalString.GetSlice(Index, Length).TaintBy(this) : null);
}