public Tag Read(Stream fs, TrackerFormat format)
{
Tag tag = new Tag();
int start_offset = 0;
int end_offset = 0;
string sig = null;
switch (format)
{
case TrackerFormat.S3m:
end_offset = 28;
break;
case TrackerFormat.Mod:
end_offset = 20;
break;
case TrackerFormat.Xm:
start_offset = 17;
end_offset = 20;
break;
case TrackerFormat.It:
sig = "IMPM";
end_offset = 26;
break;
}
//Parse the tag -)------------------------------------------------
fs.Seek(start_offset, SeekOrigin.Begin);
byte[] b;
if (sig != null)
{
b = new byte[sig.Length];
fs.Read(b, 0, sig.Length);
if (Encoding.ASCII.GetString(b) != sig)
{
return(tag);
}
}
b = new byte[end_offset];
fs.Read(b, 0, end_offset);
string content = Encoding.ASCII.GetString(b, 0, end_offset);
int term = content.IndexOf('\0');
if (term == -1)
{
term = end_offset;
}
content = content.Substring(0, term).Trim();
tag.AddTitle(content);
return(tag);
}
public Tag Read(Stream fs, TrackerFormat format)
{
Tag tag = new Tag();
int start_offset = 0;
int end_offset = 0;
string sig = null;
switch (format) {
case TrackerFormat.S3m:
end_offset = 28;
break;
case TrackerFormat.Mod:
end_offset = 20;
break;
case TrackerFormat.Xm:
start_offset = 17;
end_offset = 20;
break;
case TrackerFormat.It:
sig = "IMPM";
end_offset = 26;
break;
}
//Parse the tag -)------------------------------------------------
fs.Seek(start_offset, SeekOrigin.Begin);
byte[] b;
if (sig != null) {
b = new byte[sig.Length];
fs.Read(b, 0, sig.Length);
if (Encoding.ASCII.GetString(b) != sig)
return tag;
}
b = new byte[end_offset];
fs.Read(b, 0, end_offset);
string content = Encoding.ASCII.GetString(b, 0, end_offset);
int term = content.IndexOf('\0');
if (term == -1)
term = end_offset;
content = content.Substring(0, term).Trim();
tag.AddTitle(content);
return tag;
}
