private static List <long> IndexOfSequence(FileStream fs, byte[] pattern, int startIndex, bool debug)
{
// Debug only variables
long readedtot = 0;
string percentString = "# Indexing all files - 0%";
List <long> positions = new List <long>();
List <long> allToCheck = new List <long>();
int buffLenght = 0x100000;
byte[] buffer = new byte[buffLenght];
int readed = fs.Read(buffer, 0, buffLenght);
long ToRead = fs.Length;
while (readed > 0)
{
long current = Array.IndexOf <byte>(buffer, pattern[0], startIndex);
while (current >= 0 && current <= buffer.Length - pattern.Length)
{
if ((buffer[current + 1] == pattern[1]) && (buffer[current + 2] == pattern[2]))
{
allToCheck.Add(current);
}
current = Array.IndexOf <byte>(buffer, pattern[0], (int)current + 1);
}
foreach (long toCheck in allToCheck)
{
byte[] segment = new byte[pattern.Length];
Buffer.BlockCopy(buffer, (int)toCheck, segment, 0, pattern.Length);
//if (segment.SequenceEqual<byte>(pattern))
if (Linq.SequenceEqual(segment, pattern))
{
if (!positions.Contains(toCheck + readedtot))
{
positions.Add(toCheck + readedtot);
}
}
}
readedtot += (long)readed;
if (debug)
{
int percent = (int)((readedtot * 100) / ToRead);
if (percentString != "# Indexing all files - " + percent + "%")
{
percentString = "# Indexing all files - " + percent + "%";
Console.Write("\r" + percentString);
}
}
readed = fs.Read(buffer, 0, buffLenght);
}
return(positions);
}
private static object SingleTR2HeaderAnalyzer(byte[] rawdata, int mode)
{
// Restituisce il nome
if (mode == 0)
{
//byte[] endsequence = new byte[4] { 0x40, 0x00, 0x00, 0x00 };
//long endposition = SingleIndexOfSequence(rawdata, endsequence, 0);
byte[] rawtr2name = new byte[0x30];
Buffer.BlockCopy(rawdata, 0, rawtr2name, 0, 0x30);
string test = Encoding.UTF8.GetString(rawtr2name);
return(test.Replace("\0", ""));
}
// Restituisce la dimensione
else
{
byte[] rawtestdata = new byte[9];
long endposition = SingleIndexOfSequence(rawdata, TR2Info.endingheader, 0);
if (endposition > 0)
{
Buffer.BlockCopy(rawdata, (int)endposition, rawtestdata, 0, 0x09);
if (Linq.SequenceEqual(rawtestdata, TR2Info.specialendingheader))
{
return(endposition + TR2Info.specialendingheader.Length);
}
return(endposition + TR2Info.endingheader.Length);
}
return(0);
}
}
// Trova una sequenza di byte all'interno di un array
private static long SingleIndexOfSequence(byte[] buffer, byte[] pattern, int startIndex)
{
long position = -1;
List <long> allToCheck = new List <long>();
long current = Array.IndexOf <byte>(buffer, pattern[0], startIndex);
while (current >= 0 && current <= buffer.Length - pattern.Length)
{
if ((buffer[current + 1] == pattern[1]) && (buffer[current + 2] == pattern[2]))
{
allToCheck.Add(current);
}
current = Array.IndexOf <byte>(buffer, pattern[0], (int)current + 1);
}
foreach (long toCheck in allToCheck)
{
byte[] segment = new byte[pattern.Length];
Buffer.BlockCopy(buffer, (int)toCheck, segment, 0, pattern.Length);
if (Linq.SequenceEqual(segment, pattern))
{
return(toCheck);
}
}
return(position);
}
private static long IndexOfSequence(FileStream fs, byte[] pattern, int startIndex)
{
long readedtot = 0;
List <long> allToCheck = new List <long>();
int buffLenght = 0x100000;
byte[] buffer = new byte[buffLenght];
int readed = fs.Read(buffer, 0, buffLenght);
long ToRead = fs.Length;
while (readed > 0)
{
long current = Array.IndexOf <byte>(buffer, pattern[0], startIndex);
while (current >= 0 && current <= buffer.Length - pattern.Length)
{
if ((buffer[current + 1] == pattern[1]) && (buffer[current + 2] == pattern[2]))
{
allToCheck.Add(current);
}
current = Array.IndexOf <byte>(buffer, pattern[0], (int)current + 1);
}
foreach (long toCheck in allToCheck)
{
byte[] segment = new byte[pattern.Length];
Buffer.BlockCopy(buffer, (int)toCheck, segment, 0, pattern.Length);
if (Linq.SequenceEqual(segment, pattern))
{
return(toCheck + readedtot);
}
}
readedtot += (long)readed;
readed = fs.Read(buffer, 0, buffLenght);
}
return(-1);
}
private static List <List <long> > MultiIndexOfSequenceSpecial(FileStream fs, List <byte[]> patterns, int startIndex, List <Dictionary <long, byte> > specials, bool debug)
{
// Debug only variables
long readedtot = 0;
string percentString = "# Indexing all files - 0%";
List <List <long> > allpositions = new List <List <long> >();
List <List <long> > allallToCheck = new List <List <long> >();
int buffLenght = 0x100000;
byte[] buffer = new byte[buffLenght];
int readed = fs.Read(buffer, 0, buffLenght);
for (int i = 0; i < patterns.Count; i++)
{
allpositions.Add(new List <long>());
}
long ToRead = fs.Length;
while (readed > 0)
{
allallToCheck.Clear();
for (int i = 0; i < patterns.Count; i++)
{
allallToCheck.Add(new List <long>());
long current = Array.IndexOf <byte>(buffer, patterns[i][0], startIndex);
while (current >= 0 && current <= buffer.Length - patterns[i].Length)
{
if ((buffer[current + 1] == patterns[i][1]) && (buffer[current + 2] == patterns[i][2]))
{
allallToCheck[i].Add(current);
}
current = Array.IndexOf <byte>(buffer, patterns[i][0], (int)current + 1);
}
}
for (int i = 0; i < patterns.Count; i++)
{
if (allallToCheck[i].Count > 0)
{
foreach (long toCheck in allallToCheck[i])
{
byte[] segment = new byte[patterns[i].Length];
Buffer.BlockCopy(buffer, (int)toCheck, segment, 0, patterns[i].Length);
if (Linq.SequenceEqual(segment, patterns[i]))
{
bool toAdd = true;
if (specials[i].Count > 0)
{
foreach (KeyValuePair <long, byte> kvp in specials[i])
{
if (buffer[toCheck + kvp.Key] != kvp.Value)
{
toAdd = false;
break;
}
}
}
if (toAdd)
{
if ((toCheck + readedtot) < fs.Length)
{
if (!allpositions[i].Contains(toCheck + readedtot))
{
allpositions[i].Add(toCheck + readedtot);
}
}
}
}
}
}
}
readedtot += (long)readed;
if (debug)
{
int percent = (int)((readedtot * 100) / ToRead);
if (percentString != "# Indexing all files - " + percent + "%")
{
percentString = "# Indexing all files - " + percent + "%";
Console.Write("\r" + percentString);
}
}
readed = fs.Read(buffer, 0, buffLenght);
}
return(allpositions);
}
