private static void AddGuidsFromLine(int index, string line, List<Found> guids)
{
MatchCollection mc = s_Parser.Matches(line);
foreach (Match m in mc)
{
byte[] bytes = new byte[16];
for (int i = 0; i < 16; i++)
{
byte b;
if (!byte.TryParse(m.Groups["b" + i.ToString()].Value, System.Globalization.NumberStyles.HexNumber, null, out b))
{
if (!m.Success) throw new ArgumentOutOfRangeException();
}
bytes[i] = b;
}
guids.Add(new Found() { Line = index, Match = m.Value, Guids = new Guid[] { new Guid(bytes) } });
}
mc = s_B64Parser_Single.Matches(line);
foreach (Match m in mc)
{
Found f = new Found() { Line = index, Match = m.Value };
AddGuidsFromBytes(Convert.FromBase64String(m.Value), f);
guids.Add(f);
}
}
public static int Search(System.IO.TextReader reader, List<Found> found)
{
int startCount = found.Count;
bool inBase64 = false;
int lineCount = 0;
string line;
while (reader.Peek() != -1 && (line = reader.ReadLine()) != null)
{
if (s_isB64.IsMatch(line))
{
int len = line.Length;
int beginLine = lineCount;
System.Text.StringBuilder concatd = new StringBuilder(line);
bool appendLast = false;
List<Found> temp = new List<Found>();
AddGuidsFromLine(lineCount, line, temp);
if (!line.EndsWith("="))
{
while (!line.EndsWith("=") && (line = reader.ReadLine()) != null && (appendLast = s_isB64.IsMatch(line)) && line.Length == len)
{
lineCount++;
AddGuidsFromLine(lineCount, line, temp);
concatd.Append(line);
appendLast = false;
}
if (line != null && (inBase64 = appendLast)) concatd.Append(line);
}
if (s_B64Parser.IsMatch(concatd.ToString()))
{
Found f = new Found() { Line = beginLine, Match = concatd.ToString() };
AddGuidsFromBytes(Convert.FromBase64String(concatd.ToString()), f);
found.Add(f);
}
else
{
found.AddRange(temp);
}
}
else if (line != null)
{
AddGuidsFromLine(lineCount, line, found);
}
lineCount++;
}
return found.Count - startCount;
}
private static void AddGuidsFromBytes(byte[] bytes, Found guids)
{
if (bytes.Length == 16)
{
guids.Guids = new Guid[] { new Guid(bytes) };
}
else if (bytes.Length % 16 == 0)
{
guids.Guids = new Guid[bytes.Length / 16];
int index = 0;
while (index * 16 < bytes.Length)
{
byte[] dest = new byte[16];
Array.Copy(bytes, index * 16, dest, 0, 16);
guids.Guids[index] = new Guid(dest);
index++;
}
}
}
public static int SearchB64Combined(System.IO.TextReader reader, List<Found> found)
{
int startCount = found.Count;
int lineCount = 0;
int startLine = 0;
string line;
System.Text.StringBuilder concatd = new StringBuilder();
while (reader.Peek() != -1 && (line = reader.ReadLine()) != null)
{
if (s_isB64.IsMatch(line))
{
concatd.Append(line);
Match m = s_B64Parser.Match(concatd.ToString());
if (m.Success)
{
Found f = new Found() { Line = startLine, Match = m.Value };
AddGuidsFromBytes(Convert.FromBase64String(m.Value), f);
found.Add(f);
startLine = lineCount+1;
concatd.Clear();
}
}
else
{
concatd.Clear();
startLine = lineCount+1;
}
lineCount++;
}
return found.Count - startCount;
}
