public SplitterMergerStream(SplitterMergerInfo info)
{
this.info = info;
currentFragment = 1;
currentStream = File.OpenRead (info.GetFramentFilename (currentFragment));
currentStream.Seek (info.GetDataOffset (currentFragment), SeekOrigin.Begin);
}
private static SplitterMergerInfo GetInfoSpl5(byte[] buffer, bool esExe, FileInfo fi)
{
SplitterMergerInfo ret = new SplitterMergerInfo ();
if (esExe)
{
ret.exe = esExe;
ret.exeLength = OFFSET_V_5_02;
}
ret.splDataSize = SPL_LENGTH_V_5;
ret.version = SplitterMergerVersion.VERSION_5_02;
ret.originalFilename = UtArrays.LeerTexto (buffer, 0, 260);
ret.baseFilename = UtArrays.LeerTexto (buffer, 260, 260);
ret.baseDirectory = fi.Directory.FullName;
ret.length = UtArrays.LeerInt64 (buffer, 520);
ret.timestamp = UtArrays.LeerDateTime (buffer, 528);
ret.crc = UtArrays.LeerInt32 (buffer, 536);
//short _vers = UtArrays.LeerInt16 (buffer, 540);
bool comp = (UtArrays.LeerInt16 (buffer, 542) == 1);
if (comp)
{
ret.compression = SplitterMergerCompression.GZIP_COMPRESSION;
if (ret.originalFilename.ToLower ().EndsWith (".gz"))
{
ret.originalFilename = ret.originalFilename.Substring (0, ret.originalFilename.LastIndexOf ('.'));
}
}
ret.fragments = CalculateFragmentsNumber (ret);
return ret;
}
private static SplitterMergerInfo GetInfoSpl1(string texto, bool esExe, FileInfo fi)
{
texto = texto.Replace ("\r", "");
string[] partes = texto.Split ('\n');
if (partes.Length != 2 && partes.Length != 3)
{
return null;
}
string original = partes[0];
int fragmentos = int.Parse (partes[1]);
SplitterMergerInfo ret = new SplitterMergerInfo ();
ret.version = partes.Length == 2 ? SplitterMergerVersion.VERSION_1_02 : SplitterMergerVersion.VERSION_1_1;
ret.originalFilename = original;
ret.baseFilename = fi.Name.Substring (0, fi.Name.LastIndexOf ('.'));
ret.baseDirectory = fi.Directory.FullName;
ret.fragments = fragmentos;
ret.exe = esExe;
if (esExe)
{
ret.version = SplitterMergerVersion.VERSION_2_0;
ret.exeLength = OFFSET_V_2;
ret.splDataSize = SPL_LENGTH_V_2;
}
return ret;
}
private static SplitterMergerInfo GetInfoSpl3(byte[] buffer, bool esExe, FileInfo fi)
{
SplitterMergerInfo ret = new SplitterMergerInfo ();
if (esExe)
{
ret.exe = esExe;
ret.exeLength = OFFSET_V_3;
}
ret.splDataSize = SPL_LENGTH_V_3;
ret.version = SplitterMergerVersion.VERSION_3_0;
ret.originalFilename = UtArrays.LeerTexto (buffer, 0, 256);
ret.baseFilename = ret.originalFilename;
ret.baseDirectory = fi.Directory.FullName;
ret.length = UtArrays.LeerInt64(buffer, 256);
ret.timestamp = UtArrays.LeerDateTime(buffer, 264);
ret.fragments = UtArrays.LeerInt32(buffer, 272);
bool comp = UtArrays.LeerInt32(buffer, 276) == 1;
if (comp)
{
ret.compression = SplitterMergerCompression.V3_COMPRESSION;
if (ret.originalFilename.ToLower().EndsWith(".spc"))
{
ret.originalFilename = ret.originalFilename.Substring(0, ret.originalFilename.LastIndexOf('.'));
}
}
return ret;
}
private static int CalculateFragmentsNumber(SplitterMergerInfo m)
{
int i = 1;
while (File.Exists (m.GetFramentFilename (i)))
{
i++;
}
return i - 1;
}
