internal static string ExpandDataDirectory(string keyword, string value, ref string datadir)
{
string fullPath = null;
if ((null != value) && value.StartsWith(DataDirectory, StringComparison.OrdinalIgnoreCase))
{
string rootFolderPath = datadir;
if (null == rootFolderPath)
{
// find the replacement path
object rootFolderObject = AppDomain.CurrentDomain.GetData("DataDirectory");
rootFolderPath = (rootFolderObject as string);
if ((null != rootFolderObject) && (null == rootFolderPath))
{
throw ADP.InvalidDataDirectory();
}
else if (ADP.IsEmpty(rootFolderPath))
{
rootFolderPath = AppDomain.CurrentDomain.BaseDirectory;
}
if (null == rootFolderPath)
{
rootFolderPath = "";
}
// cache the |DataDir| for ExpandDataDirectories
datadir = rootFolderPath;
}
// We don't know if rootFolderpath ends with '\', and we don't know if the given name starts with onw
int fileNamePosition = DataDirectory.Length; // filename starts right after the '|datadirectory|' keyword
bool rootFolderEndsWith = (0 < rootFolderPath.Length) && rootFolderPath[rootFolderPath.Length - 1] == '\\';
bool fileNameStartsWith = (fileNamePosition < value.Length) && value[fileNamePosition] == '\\';
// replace |datadirectory| with root folder path
if (!rootFolderEndsWith && !fileNameStartsWith)
{
// need to insert '\'
fullPath = rootFolderPath + '\\' + value.Substring(fileNamePosition);
}
else if (rootFolderEndsWith && fileNameStartsWith)
{
// need to strip one out
fullPath = rootFolderPath + value.Substring(fileNamePosition + 1);
}
else
{
// simply concatenate the strings
fullPath = rootFolderPath + value.Substring(fileNamePosition);
}
// verify root folder path is a real path without unexpected "..\"
if (!ADP.GetFullPath(fullPath).StartsWith(rootFolderPath, StringComparison.Ordinal))
{
throw ADP.InvalidConnectionOptionValue(keyword);
}
}
return(fullPath);
}
