/// <summary>
/// Extends a given array by a given number.
/// </summary>
/// <param name="array">Array to extend</param>
/// <param name="extend">Number to extend by</param>
/// <returns>Extended array</returns>
private PackFile[] extendPackArray(PackFile[] array, int extend)
{
int newarraysize = array.Length + extend;
PackFile[] newarray = new PackFile[newarraysize];
for (int i = 0; i < newarraysize; i++)
{
if (newarraysize == 1)
{
newarray[i] = new PackFile();
break; // Will cause error otherwise, empty base array
}
else if (i > array.Length - 1)
{
newarray[i] = new PackFile();
}
else
{
newarray[i] = new PackFile();
newarray[i].FileField = array[i].FileField;
newarray[i].FileName = array[i].FileName;
newarray[i].FilePath = array[i].FilePath;
newarray[i].FilePosition = array[i].FilePosition;
newarray[i].FileLength = array[i].FileLength;
}
}
return(newarray);
}
/// <summary>
/// Once a PackFile's FileName property is filled with a full path,
/// populates properties FileName, FilePath, FileField.
/// </summary>
/// <param name="pfile">a PackFile instance</param>
private void translateFileName(PackFile pfile)
{
/* Decoding the FileField to FileName */
StringBuilder sbFileName = new StringBuilder(56);
StringBuilder sbFilePath = new StringBuilder(56);
for (int i = 0; i < 56; i++)
{
try
{
if ((char)pfile.FileName[i] == '\0')
{
break;
} // We don't support spaces in names, must be end of filename.
else if ((char)pfile.FileName[i] == '/') // Found a directory
{
pfile.PathNodes.Add(sbFileName.ToString());
sbFilePath.Append(sbFileName + "/"); // Add new directory to filepath
sbFileName.Clear(); // Clear filename, contents were a directory
}
else
{
sbFileName.Append((char)pfile.FileName[i]); // Add char-casted-byte to filename string
}
}
catch (IndexOutOfRangeException) { break; } // Went too far, assume done.
}
pfile.FileName = sbFileName.ToString();
pfile.FilePath = sbFilePath.ToString();
string fullpath = pfile.FilePath + pfile.FileName;
for (int i = 0; i < fullpath.Length; i++)
{
pfile.FileField[i] = (byte)fullpath[i];
}
}
/// <summary>
/// Reads PAK file, creates file
/// objects and populates fields.
/// </summary>
private void readPack()
{
/* Initialization */
int seekPosition = BitConverter.ToInt32(header.IndexOffset, 0); // start position for file indices, will be incremented later
byte[] indexData = new byte[64]; // file index data (56 filename, 4 length, 4 offset)
double totalSize = 0;
/* Creating file objects */
Files = new PackFile[NumFiles];
for (int i = 0; i < NumFiles; i++)
{
Files[i] = new PackFile();
}
/* Populating file objects */
for (int i = 0; i < NumFiles; i++)
{
/* Read index data from next position */
packStream.Seek(seekPosition, SeekOrigin.Begin); // Go to beginning of next index
packStream.Read(indexData, 0, 64); // Get the entire file entry
/* Assigning index data */
for (int j = 0; j < 56; j++)
{
Files[i].FileField[j] = indexData[j];
}
Files[i].FilePosition = BitConverter.ToInt32(indexData, 56);
Files[i].FileLength = BitConverter.ToInt32(indexData, 60);
totalSize += Files[i].FileLength;
/* Decoding the FileField to FileName */
StringBuilder sbFileName = new StringBuilder(56);
StringBuilder sbFilePath = new StringBuilder(56);
for (int k = 0; k < 56; k++)
{
try
{
if ((char)Files[i].FileField[k] == '\0')
{
break;
} // We don't support spaces in names, must be end of filename.
else if ((char)Files[i].FileField[k] == '/') // Found a directory
{
Files[i].PathNodes.Add(sbFileName.ToString());
sbFilePath.Append(sbFileName + "/"); // Add new directory to filepath
sbFileName.Clear(); // Clear filename, contents were a directory
}
else
{
sbFileName.Append((char)Files[i].FileField[k]); // Add char-casted-byte to filename string
}
}
catch (IndexOutOfRangeException) { break; } // Went too far, assume done.
}
Files[i].FileName = sbFileName.ToString();
Files[i].FilePath = sbFilePath.ToString();
seekPosition += 64; // Increment to next file index
}
/* Reset packStream */
packStream.Flush();
}
