/*
=================
COM_LoadPackFile
Takes an explicit (not game tree related) path to a pak file.
Loads the header and directory, adding the files at the beginning
of the list so they override previous pack files.
=================
*/
static pack_t COM_LoadPackFile(string packfile)
{
dpackheader_t header = new dpackheader_t();
int i;
packfile_t[] newfiles;
int numpackfiles;
pack_t pack = null;
int packhandle = -1;
dpackfile_t[] info = new dpackfile_t[MAX_FILES_IN_PACK];
ushort crc;
int kk;
Uint8Array buf;
int ofs;
if (sys_linux.Sys_FileOpenRead (packfile, ref packhandle) == -1)
return null;
buf = new Uint8Array(sizeof_dpackheader_t);
sys_linux.Sys_FileRead(packhandle, buf, buf.Length);
ofs = 0;
header.id = parseString(buf, ref ofs, 4);
if (header.id != "PACK")
sys_linux.Sys_Error (packfile + " is not a packfile");
header.dirofs = parseInt(buf, ref ofs);
header.dirlen = parseInt(buf, ref ofs);
numpackfiles = header.dirlen / sizeof_dpackfile_t;
if (numpackfiles > MAX_FILES_IN_PACK)
sys_linux.Sys_Error (packfile + " has " + numpackfiles + " files");
if (numpackfiles != PAK0_COUNT)
com_modified = true; // not the original file
newfiles = new packfile_t[numpackfiles];
for(kk = 0; kk < numpackfiles; kk++) newfiles[kk] = new packfile_t();
sys_linux.Sys_FileSeek(packhandle, header.dirofs);
buf = new Uint8Array(header.dirlen);
sys_linux.Sys_FileRead (packhandle, buf, header.dirlen);
ofs = 0;
for (kk = 0; kk < numpackfiles; kk++)
{
info[kk] = new dpackfile_t();
info[kk].name = parseString(buf, ref ofs, 56);
info[kk].filepos = parseInt(buf, ref ofs);
info[kk].filelen = parseInt(buf, ref ofs);
}
// crc the directory to check for modifications
/*CRC_Init (&crc);
for (i=0 ; i<header.dirlen ; i++)
CRC_ProcessByte (&crc, ((byte *)info)[i]);
if (crc != PAK0_CRC)
com_modified = true;*/
// parse the directory
for (i=0 ; i<numpackfiles ; i++)
{
newfiles[i].name = info[i].name;
newfiles[i].filepos = info[i].filepos;
newfiles[i].filelen = info[i].filelen;
}
pack = new pack_t();
pack.filename = packfile;
pack.handle = packhandle;
pack.numfiles = numpackfiles;
pack.files = newfiles;
/*Con_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);*/
return pack;
}
public static pack_t COM_LoadPackFile(string packfile)
{
FileStream file = Sys_FileOpenRead(packfile);
if (file == null)
{
return(null);
}
dpackheader_t header = ReadStructure <dpackheader_t>(file);
string id = Encoding.ASCII.GetString(header.id);
if (id != "PACK")
{
Sys_Error("{0} is not a packfile", packfile);
}
header.dirofs = LittleLong(header.dirofs);
header.dirlen = LittleLong(header.dirlen);
int numpackfiles = header.dirlen / Marshal.SizeOf(typeof(dpackfile_t));
if (numpackfiles > q_shared.MAX_FILES_IN_PACK)
{
Sys_Error("{0} has {1} files", packfile, numpackfiles);
}
//if (numpackfiles != PAK0_COUNT)
// _IsModified = true; // not the original file
file.Seek(header.dirofs, SeekOrigin.Begin);
byte[] buf = new byte[header.dirlen];
if (file.Read(buf, 0, buf.Length) != buf.Length)
{
Sys_Error("{0} buffering failed!", packfile);
}
List <dpackfile_t> info = new List <dpackfile_t>(q_shared.MAX_FILES_IN_PACK);
GCHandle handle = GCHandle.Alloc(buf, GCHandleType.Pinned);
try
{
IntPtr ptr = handle.AddrOfPinnedObject();
int count = 0, structSize = Marshal.SizeOf(typeof(dpackfile_t));
while (count < header.dirlen)
{
dpackfile_t tmp = (dpackfile_t)Marshal.PtrToStructure(ptr, typeof(dpackfile_t));
info.Add(tmp);
ptr = new IntPtr(ptr.ToInt64() + structSize);
count += structSize;
}
if (numpackfiles != info.Count)
{
Sys_Error("{0} directory reading failed!", packfile);
}
}
finally
{
handle.Free();
}
// crc the directory to check for modifications
//ushort crc;
//CRC.Init(out crc);
//for (int i = 0; i < buf.Length; i++)
// CRC.ProcessByte(ref crc, buf[i]);
//if (crc != PAK0_CRC)
// _IsModified = true;
buf = null;
// parse the directory
packfile_t[] newfiles = new packfile_t[numpackfiles];
for (int i = 0; i < numpackfiles; i++)
{
packfile_t pf = new packfile_t();
pf.name = GetString(info[i].name);
pf.filepos = LittleLong(info[i].filepos);
pf.filelen = LittleLong(info[i].filelen);
newfiles[i] = pf;
}
pack_t pack = new pack_t(packfile, new BinaryReader(file, Encoding.ASCII), newfiles);
Con_Printf("Added packfile {0} ({1} files)\n", packfile, numpackfiles);
return(pack);
}
/*
* =================
* COM_LoadPackFile
*
* Takes an explicit (not game tree related) path to a pak file.
*
* Loads the header and directory, adding the files at the beginning
* of the list so they override previous pack files.
* =================
*/
static pack_t COM_LoadPackFile(string packfile)
{
dpackheader_t header = new dpackheader_t();
int i;
packfile_t[] newfiles;
int numpackfiles;
pack_t pack = null;
int packhandle = -1;
dpackfile_t[] info = new dpackfile_t[MAX_FILES_IN_PACK];
ushort crc;
int kk;
byte[] buf;
int ofs;
if (sys_linux.Sys_FileOpenRead(packfile, ref packhandle) == -1)
{
return(null);
}
buf = new byte[sizeof_dpackheader_t];
sys_linux.Sys_FileRead(packhandle, buf, buf.Length);
ofs = 0;
header.id = parseString(buf, ref ofs, 4);
if (header.id != "PACK")
{
sys_linux.Sys_Error(packfile + " is not a packfile");
}
header.dirofs = parseInt(buf, ref ofs);
header.dirlen = parseInt(buf, ref ofs);
numpackfiles = header.dirlen / sizeof_dpackfile_t;
if (numpackfiles > MAX_FILES_IN_PACK)
{
sys_linux.Sys_Error(packfile + " has " + numpackfiles + " files");
}
if (numpackfiles != PAK0_COUNT)
{
com_modified = true; // not the original file
}
newfiles = new packfile_t[numpackfiles];
for (kk = 0; kk < numpackfiles; kk++)
{
newfiles[kk] = new packfile_t();
}
sys_linux.Sys_FileSeek(packhandle, header.dirofs);
buf = new byte[header.dirlen];
sys_linux.Sys_FileRead(packhandle, buf, header.dirlen);
ofs = 0;
for (kk = 0; kk < numpackfiles; kk++)
{
info[kk] = new dpackfile_t();
info[kk].name = parseString(buf, ref ofs, 56);
info[kk].filepos = parseInt(buf, ref ofs);
info[kk].filelen = parseInt(buf, ref ofs);
}
// crc the directory to check for modifications
/*CRC_Init (&crc);
* for (i=0 ; i<header.dirlen ; i++)
* CRC_ProcessByte (&crc, ((byte *)info)[i]);
* if (crc != PAK0_CRC)
* com_modified = true;*/
// parse the directory
for (i = 0; i < numpackfiles; i++)
{
newfiles[i].name = info[i].name;
newfiles[i].filepos = info[i].filepos;
newfiles[i].filelen = info[i].filelen;
}
pack = new pack_t();
pack.filename = packfile;
pack.handle = packhandle;
pack.numfiles = numpackfiles;
pack.files = newfiles;
/*Con_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);*/
return(pack);
}
