unit uPhysFSLayer;
interface
uses SDLh, LuaPas;
const PhysfsLibName = {$IFDEF PHYSFS_INTERNAL}'libhw_physfs'{$ELSE}'libphysfs'{$ENDIF};
const PhyslayerLibName = 'libphyslayer';
{$IFNDEF WIN32}
{$linklib physfs}
{$linklib physlayer}
{$IFDEF DARWIN}
{$linkframework IOKit}
{$ENDIF}
{$ENDIF}
procedure initModule;
procedure freeModule;
type PFSFile = pointer;
function rwopsOpenRead(fname: shortstring): PSDL_RWops;
function rwopsOpenWrite(fname: shortstring): PSDL_RWops;
function pfsOpenRead(fname: shortstring): PFSFile;
function pfsClose(f: PFSFile): boolean;
procedure pfsReadLn(f: PFSFile; var s: shortstring);
procedure pfsReadLnA(f: PFSFile; var s: ansistring);
function pfsBlockRead(f: PFSFile; buf: pointer; size: Int64): Int64;
function pfsEOF(f: PFSFile): boolean;
function pfsExists(fname: shortstring): boolean;
function physfsReader(L: Plua_State; f: PFSFile; sz: Psize_t) : PChar; cdecl; external PhyslayerLibName;
procedure physfsReaderSetBuffer(buf: pointer); cdecl; external PhyslayerLibName;
{$IFNDEF PAS2C}
//apparently pas2c doesn't render the functions below if it finds 'implementation' first
implementation
uses uUtils, uVariables, sysutils;
{$ENDIF}
function PHYSFS_init(argv0: PChar) : LongInt; cdecl; external PhysfsLibName;
function PHYSFS_deinit() : LongInt; cdecl; external PhysfsLibName;
function PHYSFSRWOPS_openRead(fname: PChar): PSDL_RWops; cdecl ; external PhyslayerLibName;
function PHYSFSRWOPS_openWrite(fname: PChar): PSDL_RWops; cdecl; external PhyslayerLibName;
function PHYSFS_mount(newDir, mountPoint: PChar; appendToPath: LongBool) : LongInt; cdecl; external PhysfsLibName;
function PHYSFS_openRead(fname: PChar): PFSFile; cdecl; external PhysfsLibName;
function PHYSFS_eof(f: PFSFile): LongBool; cdecl; external PhysfsLibName;
function PHYSFS_readBytes(f: PFSFile; buffer: pointer; len: Int64): Int64; cdecl; external PhysfsLibName;
function PHYSFS_close(f: PFSFile): LongBool; cdecl; external PhysfsLibName;
function PHYSFS_exists(fname: PChar): LongBool; cdecl; external PhysfsLibName;
procedure hedgewarsMountPackages(); cdecl; external PhyslayerLibName;
{$IFDEF PAS2C}
implementation
uses uUtils, uVariables;
{$ENDIF}
(*****************************************************************)
function rwopsOpenRead(fname: shortstring): PSDL_RWops;
begin
exit(PHYSFSRWOPS_openRead(Str2PChar(fname)));
end;
function rwopsOpenWrite(fname: shortstring): PSDL_RWops;
begin
exit(PHYSFSRWOPS_openWrite(Str2PChar(fname)));
end;
function pfsOpenRead(fname: shortstring): PFSFile;
begin
exit(PHYSFS_openRead(Str2PChar(fname)));
end;
function pfsEOF(f: PFSFile): boolean;
begin
exit(PHYSFS_eof(f))
end;
function pfsClose(f: PFSFile): boolean;
begin
exit(PHYSFS_close(f))
end;
function pfsExists(fname: shortstring): boolean;
begin
exit(PHYSFS_exists(Str2PChar(fname)))
end;
procedure pfsReadLn(f: PFSFile; var s: shortstring);
var c: char;
begin
s[0]:= #0;
while (PHYSFS_readBytes(f, @c, 1) = 1) and (c <> #10) do
if (c <> #13) and (s[0] < #255) then
begin
inc(s[0]);
s[byte(s[0])]:= c
end
end;
procedure pfsReadLnA(f: PFSFile; var s: ansistring);
var c: char;
b: shortstring;
begin
s:= '';
b[0]:= #0;
while (PHYSFS_readBytes(f, @c, 1) = 1) and (c <> #10) do
if (c <> #13) then
begin
inc(b[0]);
b[byte(b[0])]:= c;
if b[0] = #255 then
begin
s:= s + b;
b[0]:= #0
end
end;
s:= s + b
end;
function pfsBlockRead(f: PFSFile; buf: pointer; size: Int64): Int64;
var r: Int64;
begin
r:= PHYSFS_readBytes(f, buf, size);
if r <= 0 then
pfsBlockRead:= 0
else
pfsBlockRead:= r
end;
procedure initModule;
var i: LongInt;
cPhysfsId: shortstring;
begin
{$IFDEF HWLIBRARY}
//TODO: http://icculus.org/pipermail/physfs/2011-August/001006.html
cPhysfsId:= GetCurrentDir() + {$IFDEF DARWIN}'/Hedgewars.app/Contents/MacOS/' + {$ENDIF} ' hedgewars';
{$ELSE}
cPhysfsId:= ParamStr(0);
{$ENDIF}
i:= PHYSFS_init(Str2PChar(cPhysfsId));
AddFileLog('[PhysFS] init: ' + inttostr(i));
i:= PHYSFS_mount(Str2PChar(PathPrefix), nil, false);
AddFileLog('[PhysFS] mount ' + PathPrefix + ': ' + inttostr(i));
i:= PHYSFS_mount(Str2PChar(UserPathPrefix + '/Data'), nil, false);
AddFileLog('[PhysFS] mount ' + UserPathPrefix + '/Data: ' + inttostr(i));
hedgewarsMountPackages;
end;
procedure freeModule;
begin
PHYSFS_deinit;
end;
end.