private sbyte[] unescapeString(System.String string_Renamed)
{
// give octets enough space to grow
sbyte[] octets = new sbyte[string_Renamed.Length * 3];
// index for string and octets
int iString, iOctets;
// escape==true means we are in an escape sequence.
bool escape = false;
// escStart==true means we are reading the first character of an escape.
bool escStart = false;
int ival, length = string_Renamed.Length;
sbyte[] utf8Bytes;
char ch; // Character we are adding to the octet string
char[] ca = new char[1]; // used while converting multibyte UTF-8 char
char temp = (char) (0); // holds the value of the escaped sequence
// loop through each character of the string and copy them into octets
// converting escaped sequences when needed
for (iString = 0, iOctets = 0; iString < length; iString++)
{
ch = string_Renamed[iString];
if (escape)
{
if ((ival = hex2int(ch)) < 0)
{
// Invalid escape value(not a hex character)
throw new LdapLocalException(ExceptionMessages.INVALID_ESCAPE, new System.Object[]{ch}, LdapException.FILTER_ERROR);
}
else
{
// V3 escaped: \\**
if (escStart)
{
temp = (char) (ival << 4); // high bits of escaped char
escStart = false;
}
else
{
temp |= (char) (ival); // all bits of escaped char
octets[iOctets++] = (sbyte) temp;
escStart = escape = false;
}
}
}
else if (ch == '\\')
{
escStart = escape = true;
}
else
{
try
{
// place the character into octets.
if ((ch >= 0x01 && ch <= 0x27) || (ch >= 0x2B && ch <= 0x5B) || (ch >= 0x5D))
{
// found valid char
if (ch <= 0x7f)
{
// char = %x01-27 / %x2b-5b / %x5d-7f
octets[iOctets++] = (sbyte) ch;
}
else
{
// char > 0x7f, could be encoded in 2 or 3 bytes
ca[0] = ch;
System.Text.Encoding encoder = System.Text.Encoding.GetEncoding("utf-8");
byte[] ibytes = encoder.GetBytes(new System.String(ca));
utf8Bytes=SupportClass.ToSByteArray(ibytes);
// utf8Bytes = new System.String(ca).getBytes("UTF-8");
// copy utf8 encoded character into octets
Array.Copy((System.Array) (utf8Bytes), 0, (System.Array) octets, iOctets, utf8Bytes.Length);
iOctets = iOctets + utf8Bytes.Length;
}
escape = false;
}
else
{
// found invalid character
System.String escString = "";
ca[0] = ch;
System.Text.Encoding encoder = System.Text.Encoding.GetEncoding("utf-8");
byte[] ibytes = encoder.GetBytes(new System.String(ca));
utf8Bytes=SupportClass.ToSByteArray(ibytes);
// utf8Bytes = new System.String(ca).getBytes("UTF-8");
for (int i = 0; i < utf8Bytes.Length; i++)
{
sbyte u = utf8Bytes[i];
if ((u >= 0) && (u < 0x10))
{
escString = escString + "\\0" + System.Convert.ToString(u & 0xff, 16);
}
else
{
escString = escString + "\\" + System.Convert.ToString(u & 0xff, 16);
}
}
throw new LdapLocalException(ExceptionMessages.INVALID_CHAR_IN_FILTER, new System.Object[]{ch, escString}, LdapException.FILTER_ERROR);
}
}
catch (System.IO.IOException ue)
{
throw new System.SystemException("UTF-8 String encoding not supported by JVM");
}
}
}
// Verify that any escape sequence completed
if (escStart || escape)
{
throw new LdapLocalException(ExceptionMessages.SHORT_ESCAPE, LdapException.FILTER_ERROR);
}
sbyte[] toReturn = new sbyte[iOctets];
// Array.Copy((System.Array)SupportClass.ToByteArray(octets), 0, (System.Array)SupportClass.ToByteArray(toReturn), 0, iOctets);
Array.Copy((System.Array)octets, 0, (System.Array)toReturn, 0, iOctets);
octets = null;
return toReturn;
}
