/// @param [in] relative dirPath -- e.g. "path/to/dir" </param>
private SqlFsNode __getFsNode(string path)
{
if (SqlFsFunc.isNullOrEmpty(path))
{
SqlFsErrCode.CurrentError = FsErr.EmptyString;
return(null);
}
if (path.StartsWith(SqlFsConst.STRPATHSEP)) // must *NOT* start with '/'
{
SqlFsErrCode.CurrentError = FsErr.MustUseRelativePath;
return(null);
}
if (path.EndsWith(SqlFsConst.STRPATHSEP)) // trim trailing '/'
{
path = SqlFsFunc.trimEnd(path, new char[] { SqlFsConst.PATHSEP });
}
string[] pathSeg = path.Split(SqlFsConst.STRPATHSEP, true);
if (pathSeg == null || pathSeg.Length <= 0)
{
SqlFsErrCode.CurrentError = FsErr.SplitPathErr;
return(null);
}
SqlFsNode curNode = this;
// start looping to target node
for (int i = 0; i < pathSeg.Length; ++i)
{
if (SqlFsFunc.isNullOrEmpty(pathSeg[i])) // to prevent empty space between separator
{
continue;
}
curNode = ((SqlDir)curNode).__getChild(pathSeg[i]);
if (curNode == null)
{
SqlFsErrCode.CurrentError = FsErr.ChildNotFound;
break;
}
if (!curNode.Dir && i != pathSeg.Length - 1) // if a file but not reach the end yet
{
curNode = null;
SqlFsErrCode.CurrentError = FsErr.NotDirInPath;
break;
}
}
return(curNode);
}
/// @param [in] relative dirPath -- e.g. "path/to/dir" </param>
private SqlDir __getDir(string dirPath)
{
if (SqlFsFunc.isNullOrEmpty(dirPath))
{
SqlFsErrCode.CurrentError = FsErr.EmptyString;
return(null);
}
if (dirPath.StartsWith(SqlFsConst.STRPATHSEP)) // must *NOT* start with '/'
{
SqlFsErrCode.CurrentError = FsErr.MustUseRelativePath;
return(null);
}
if (dirPath.EndsWith(SqlFsConst.STRPATHSEP)) // trim trailing '/'
{
dirPath = SqlFsFunc.trimEnd(dirPath, new char[] { SqlFsConst.PATHSEP });
}
string[] dirSeg = dirPath.Split(SqlFsConst.STRPATHSEP, true);
if (dirSeg == null || dirSeg.Length <= 0)
{
SqlFsErrCode.CurrentError = FsErr.SplitPathErr;
return(null);
}
SqlFsNode curNode = this;
// start looping to target dir
foreach (string dir in dirSeg)
{
if (SqlFsFunc.isNullOrEmpty(dir)) // to prevent empty space between separator
{
continue;
}
curNode = ((SqlDir)curNode).__getChild(dir);
if (curNode == null || !curNode.Dir)
{
curNode = null;
SqlFsErrCode.CurrentError = FsErr.ChildNotFound;
break;
}
}
return((SqlDir)curNode);
}
