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#ifdef RCSID
static char RCSid[] =
"$Header: d:/cvsroot/tads/TADS2/FIO.C,v 1.4 1999/07/11 00:46:29 MJRoberts Exp $";
#endif
/*
* Copyright (c) 1992, 2002 Michael J. Roberts. All Rights Reserved.
*
* Please see the accompanying license file, LICENSE.TXT, for information
* on using and copying this software.
*/
/*
Name
fio.c - file i/o functions
Function
file i/o: read game, write game, save game, restore game
Notes
none
Modified
04/11/99 CNebel - Include appctx.h, not trd.h.
10/23/97 CNebel - removed now-obsolete Think C hack.
04/02/92 MJRoberts - creation
*/
#include <stdlib.h>
#include <string.h>
#include "os.h"
#include "std.h"
#include "appctx.h"
#include "mch.h"
#include "mcm.h"
#include "mcl.h"
#include "tok.h"
#include "obj.h"
#include "voc.h"
#include "fio.h"
#include "dat.h"
#include "prs.h"
#include "linf.h"
#include "cmap.h"
/* compare a resource string */
/* int fioisrsc(uchar *filbuf, char *refnam); */
#define fioisrsc(filbuf, refnam) \
(((filbuf)[0] == strlen(refnam)) && \
!memcmp(filbuf+1, refnam, (size_t)((filbuf)[0])))
/* callback to load an object on demand */
void OS_LOADDS fioldobj(void *ctx0, mclhd handle, uchar *ptr, ushort siz)
{
fiolcxdef *ctx = (fiolcxdef *)ctx0;
ulong seekpos = (ulong)handle;
osfildef *fp = ctx->fiolcxfp;
char buf[7];
errcxdef *ec = ctx->fiolcxerr;
uint rdsiz;
/* figure out what type of object is to be loaded */
osfseek(fp, seekpos + ctx->fiolcxst, OSFSK_SET);
if (osfrb(fp, buf, 7)) errsig(ec, ERR_LDGAM);
switch(buf[0])
{
case TOKSTFUNC:
rdsiz = osrp2(buf + 3);
break;
case TOKSTOBJ:
rdsiz = osrp2(buf + 5);
break;
case TOKSTFWDOBJ:
case TOKSTFWDFN:
default:
errsig(ec, ERR_UNKOTYP);
}
if (siz < rdsiz) errsig(ec, ERR_LDBIG);
if (osfrb(fp, ptr, rdsiz)) errsig(ec, ERR_LDGAM);
if (ctx->fiolcxflg & FIOFCRYPT)
fioxor(ptr, rdsiz, ctx->fiolcxseed, ctx->fiolcxinc);
}
/* shut down load-on-demand subsystem (close load file) */
void fiorcls(fiolcxdef *ctx)
{
if (ctx != 0 && ctx->fiolcxfp != 0)
{
/* close the file */
osfcls(ctx->fiolcxfp);
/* forget the file object */
ctx->fiolcxfp = 0;
}
}
/*
* Read an HTMLRES resource map
*/
static void fiordhtml(errcxdef *ec, osfildef *fp, appctxdef *appctx,
int resfileno, const char *resfilename)
{
uchar buf[256];
/*
* resource map - if the host system is interested, tell it about it
*/
if (appctx != 0)
{
ulong entry_cnt;
ulong i;
/* read the index table header */
if (osfrb(fp, buf, 8))
errsig1(ec, ERR_RDRSC, ERRTSTR,
errstr(ec, resfilename, strlen(resfilename)));
/* get the number of entries in the table */
entry_cnt = osrp4(buf);
/* read the index entries */
for (i = 0 ; i < entry_cnt ; ++i)
{
ulong res_ofs;
ulong res_siz;
ushort res_namsiz;
/* read this entry */
if (osfrb(fp, buf, 10))
errsig1(ec, ERR_RDRSC, ERRTSTR,
errstr(ec, resfilename, strlen(resfilename)));
/* get the entry header */
res_ofs = osrp4(buf);
res_siz = osrp4(buf + 4);
res_namsiz = osrp2(buf + 8);
/* read this entry's name */
if (osfrb(fp, buf, res_namsiz))
errsig1(ec, ERR_RDRSC, ERRTSTR,
errstr(ec, resfilename, strlen(resfilename)));
/* tell the host system about this entry */
if (appctx->add_resource)
(*appctx->add_resource)(appctx->add_resource_ctx,
res_ofs, res_siz,
(char *)buf,
(size_t)res_namsiz,
resfileno);
}
/* tell the host system where the resources start */
if (appctx->set_resmap_seek != 0)
{
long pos = osfpos(fp);
(*appctx->set_resmap_seek)(appctx->set_resmap_seek_ctx,
pos, resfileno);
}
}
}
/*
* Read an external resource file. This is a limited version of the
* general file reader that can only read resource files, not full game
* files.
*/
static void fiordrscext(errcxdef *ec, osfildef *fp, appctxdef *appctx,
int resfileno, char *resfilename)
{
uchar buf[TOKNAMMAX + 50];
unsigned long endpos;
unsigned long startofs;
/* note the starting offset */
startofs = osfpos(fp);
/* check file and version headers, and get flags and timestamp */
if (osfrb(fp, buf, (int)(sizeof(FIOFILHDR) + sizeof(FIOVSNHDR) + 2)))
errsig1(ec, ERR_RDRSC, ERRTSTR,
errstr(ec, resfilename, strlen(resfilename)));
if (memcmp(buf, FIOFILHDRRSC, (size_t)sizeof(FIOFILHDRRSC)))
errsig1(ec, ERR_BADHDRRSC, ERRTSTR,
errstr(ec, resfilename, strlen(resfilename)));
if (memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR,
(size_t)sizeof(FIOVSNHDR))
&& memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR2,
(size_t)sizeof(FIOVSNHDR2))
&& memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR3,
(size_t)sizeof(FIOVSNHDR3)))
errsig(ec, ERR_BADVSN);
if (osfrb(fp, buf, (size_t)26))
errsig1(ec, ERR_RDRSC, ERRTSTR,
errstr(ec, resfilename, strlen(resfilename)));
/* now read resources from the file */
for (;;)
{
/* read resource type and next-resource pointer */
if (osfrb(fp, buf, 1)
|| osfrb(fp, buf + 1, (int)(buf[0] + 4)))
errsig1(ec, ERR_RDRSC, ERRTSTR,
errstr(ec, resfilename, strlen(resfilename)));
endpos = osrp4(buf + 1 + buf[0]);
/* check the resource type */
if (fioisrsc(buf, "HTMLRES"))
{
/* read the HTML resource map */
fiordhtml(ec, fp, appctx, resfileno, resfilename);
/*
* skip the resources - they're entirely for the host
* application's use
*/
osfseek(fp, endpos + startofs, OSFSK_SET);
}
else if (fioisrsc(buf, "$EOF"))
{
/* we're done reading the file */
break;
}
else
errsig(ec, ERR_UNKRSC);
}
}
/*
* read a game from a binary file
*
* flags:
* &1 ==> run preinit
* &2 ==> preload objects
*/
static void fiord1(mcmcxdef *mctx, voccxdef *vctx, tokcxdef *tctx,
osfildef *fp, const char *fname,
fiolcxdef *setupctx, ulong startofs,
objnum *preinit, uint *flagp, tokpdef *path,
uchar **fmtsp, uint *fmtlp, uint *pcntptr, int flags,
appctxdef *appctx, char *argv0)
{
int i;
int siz;
uchar buf[TOKNAMMAX + 50];
errcxdef *ec = vctx->voccxerr;
ulong endpos;
int obj;
ulong curpos;
runxdef *ex;
ulong eof_reset = 0; /* reset here at EOF if non-zero */
#if 0 // XFCNs are obsolete
int xfcns_done = FALSE; /* already loaded XFCNs */
#endif
ulong xfcn_pos = 0; /* location of XFCN's if preloadable */
uint xor_seed = 17; /* seed value for fioxor */
uint xor_inc = 29; /* increment value for fioxor */
/* set up loader callback context */
setupctx->fiolcxfp = fp;
setupctx->fiolcxerr = ec;
setupctx->fiolcxst = startofs;
setupctx->fiolcxseed = xor_seed;
setupctx->fiolcxinc = xor_inc;
/* check file and version headers, and get flags and timestamp */
if (osfrb(fp, buf, (int)(sizeof(FIOFILHDR) + sizeof(FIOVSNHDR) + 2)))
errsig(ec, ERR_RDGAM);
if (memcmp(buf, FIOFILHDR, (size_t)sizeof(FIOFILHDR)))
errsig(ec, ERR_BADHDR);
if (memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR,
(size_t)sizeof(FIOVSNHDR))
&& memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR2,
(size_t)sizeof(FIOVSNHDR2))
&& memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR3,
(size_t)sizeof(FIOVSNHDR3)))
errsig(ec, ERR_BADVSN);
if (osfrb(fp, vctx->voccxtim, (size_t)26)) errsig(ec, ERR_RDGAM);
/*
* if the game wasn't compiled with 2.2 or later, make a note,
* because we need to ignore certain property flags (due to a bug in
* the old compiler)
*/
if (memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR2,
(size_t)sizeof(FIOVSNHDR2)) == 0
|| memcmp(buf + sizeof(FIOFILHDR), FIOVSNHDR3,
(size_t)sizeof(FIOVSNHDR3)) == 0)
mctx->mcmcxflg |= MCMCXF_NO_PRP_DEL;
setupctx->fiolcxflg =
*flagp = osrp2(buf + sizeof(FIOFILHDR) + sizeof(FIOVSNHDR));
/* now read resources from the file */
for (;;)
{
/* read resource type and next-resource pointer */
if (osfrb(fp, buf, 1)
|| osfrb(fp, buf + 1, (int)(buf[0] + 4)))
errsig(ec, ERR_RDGAM);
endpos = osrp4(buf + 1 + buf[0]);
if (fioisrsc(buf, "OBJ"))
{
/* skip regular objects if fast-load records are included */
if (*flagp & FIOFFAST)
{
osfseek(fp, endpos + startofs, OSFSK_SET);
continue;
}
curpos = osfpos(fp) - startofs;
while (curpos != endpos)
{
/* read type and object number */
if (osfrb(fp, buf, 3)) errsig(ec, ERR_RDGAM);
obj = osrp2(buf+1);
switch(buf[0])
{
case TOKSTFUNC:
case TOKSTOBJ:
if (osfrb(fp, buf + 3, 4)) errsig(ec, ERR_RDGAM);
mcmrsrv(mctx, (ushort)osrp2(buf + 3), (mcmon)obj,
(mclhd)curpos);
curpos += osrp2(buf + 5) + 7;
/* load object if preloading */
if (flags & 2)
{
(void)mcmlck(mctx, (mcmon)obj);
mcmunlck(mctx, (mcmon)obj);
}
/* seek past this object */
osfseek(fp, curpos + startofs, OSFSK_SET);
break;
case TOKSTFWDOBJ:
case TOKSTFWDFN:
{
ushort siz;
uchar *p;
if (osfrb(fp, buf+3, 2)) errsig(ec, ERR_RDGAM);
siz = osrp2(buf+3);
p = mcmalonum(mctx, siz, (mcmon)obj);
if (osfrb(fp, p, siz)) errsig(ec, ERR_RDGAM);
mcmunlck(mctx, (mcmon)obj);
curpos += 5 + siz;
break;
}
case TOKSTEXTERN:
if (!vctx->voccxrun->runcxext)
errsig(ec, ERR_UNXEXT);
ex = &vctx->voccxrun->runcxext[obj];
if (osfrb(fp, buf + 3, 1)
|| osfrb(fp, ex->runxnam, (int)buf[3]))
errsig(ec, ERR_RDGAM);
ex->runxnam[buf[3]] = '\0';
curpos += buf[3] + 4;
break;
default:
errsig(ec, ERR_UNKOTYP);
}
}
}
else if (fioisrsc(buf, "FST"))
{
uchar *p;
uchar *bufp;
ulong siz;
if (!(*flagp & FIOFFAST))
{
osfseek(fp, endpos + startofs, OSFSK_SET);
continue;
}
curpos = osfpos(fp) - startofs;
siz = endpos - curpos;
if (siz && siz < OSMALMAX
&& (bufp = p = (uchar *)osmalloc((size_t)siz)) != 0)
{
uchar *p1;
ulong siz2;
uint sizcur;
for (p1 = p, siz2 = siz ; siz2 ; siz2 -= sizcur, p1 += sizcur)
{
sizcur = (siz2 > (uint)0xffff ? (uint)0xffff : siz2);
if (osfrb(fp, p1, sizcur)) errsig(ec, ERR_RDGAM);
}
while (siz)
{
obj = osrp2(p + 1);
switch(*p)
{
case TOKSTFUNC:
case TOKSTOBJ:
mcmrsrv(mctx, (ushort)osrp2(p + 3), (mcmon)obj,
(mclhd)osrp4(p + 7));
p += 11;
siz -= 11;
/* preload object if desired */
if (flags & 2)
{
(void)mcmlck(mctx, (mcmon)obj);
mcmunlck(mctx, (mcmon)obj);
}
break;
case TOKSTEXTERN:
if (!vctx->voccxrun->runcxext)
errsig(ec, ERR_UNXEXT);
ex = &vctx->voccxrun->runcxext[obj];
memcpy(ex->runxnam, p + 4, (size_t)p[3]);
ex->runxnam[p[3]] = '\0';
siz -= p[3] + 4;
p += p[3] + 4;
break;
default:
errsig(ec, ERR_UNKOTYP);
}
}
/* done with temporary block; free it */
osfree(bufp);
osfseek(fp, endpos + startofs, OSFSK_SET);
}
else
{
while (curpos != endpos)
{
if (osfrb(fp, buf, 3)) errsig(ec, ERR_RDGAM);
obj = osrp2(buf + 1);
switch(buf[0])
{
case TOKSTFUNC:
case TOKSTOBJ:
if (osfrb(fp, buf + 3, 8)) errsig(ec, ERR_RDGAM);
mcmrsrv(mctx, (ushort)osrp2(buf + 3), (mcmon)obj,
(mclhd)osrp4(buf + 7));
curpos += 11;
/* preload object if desired */
if (flags & 2)
{
(void)mcmlck(mctx, (mcmon)obj);
mcmunlck(mctx, (mcmon)obj);
osfseek(fp, curpos + startofs, OSFSK_SET);
}
break;
case TOKSTEXTERN:
if (!vctx->voccxrun->runcxext)
errsig(ec, ERR_UNXEXT);
ex = &vctx->voccxrun->runcxext[obj];
if (osfrb(fp, buf + 3, 1)
|| osfrb(fp, ex->runxnam, (int)buf[3]))
errsig(ec, ERR_RDGAM);
ex->runxnam[buf[3]] = '\0';
curpos += buf[3] + 4;
break;
default:
errsig(ec, ERR_UNKOTYP);
}
}
}
/* if we can preload xfcn's, do so now */
if (xfcn_pos)
{
eof_reset = endpos; /* remember to return here when done */
osfseek(fp, xfcn_pos, OSFSK_SET); /* go to xfcn's */
}
}
else if (fioisrsc(buf, "XFCN"))
{
if (!vctx->voccxrun->runcxext) errsig(ec, ERR_UNXEXT);
/* read length and name of resource */
if (osfrb(fp, buf, 3) || osfrb(fp, buf + 3, (int)buf[2]))
errsig(ec, ERR_RDGAM);
siz = osrp2(buf);
#if 0
/*
* external functions are now obsolete - do not load
*/
/* look for an external function with the same name */
for (i = vctx->voccxrun->runcxexc, ex = vctx->voccxrun->runcxext
; i ; ++ex, --i)
{
j = strlen(ex->runxnam);
if (j == buf[2] && !memcmp(buf + 3, ex->runxnam, (size_t)j))
break;
}
/* if we found an external function of this name, load it */
if (i && !xfcns_done)
{
/* load the function */
ex->runxptr = os_exfld(fp, (unsigned)siz);
}
else
{
/* this XFCN isn't used; don't bother loading it */
osfseek(fp, endpos + startofs, OSFSK_SET);
}
#else
/* external functions are obsolete; simply skip the data */
osfseek(fp, endpos + startofs, OSFSK_SET);
#endif
}
else if (fioisrsc(buf, "HTMLRES"))
{
/* read the resources */
fiordhtml(ec, fp, appctx, 0, fname);
/*
* skip the resources - they're entirely for the host
* application's use
*/
osfseek(fp, endpos + startofs, OSFSK_SET);
}
else if (fioisrsc(buf, "INH"))
{
uchar *p;
uchar *bufp;
ulong siz;
/* do it in a single file read, if we can, for speed */
curpos = osfpos(fp) - startofs;
siz = endpos - curpos;
if (siz && siz < OSMALMAX
&& (bufp = p = (uchar *)osmalloc((size_t)siz)) != 0)
{
uchar *p1;
ulong siz2;
uint sizcur;
for (p1 = p, siz2 = siz ; siz2 ; siz2 -= sizcur, p1 += sizcur)
{
sizcur = (siz2 > (uint)0xffff ? (uint)0xffff : siz2);
if (osfrb(fp, p1, sizcur)) errsig(ec, ERR_RDGAM);
}
while (siz)
{
i = osrp2(p + 7);
obj = osrp2(p + 1);
vociadd(vctx, (objnum)obj, (objnum)osrp2(p+3), i,
(objnum *)(p + 9), p[0] | VOCIFXLAT);
vocinh(vctx, obj)->vociilc = osrp2(p + 5);
p += 9 + (2 * i);
siz -= 9 + (2 * i);
}
/* done with temporary block; free it */
osfree(bufp);
}
else
{
while (curpos != endpos)
{
if (osfrb(fp, buf, 9)) errsig(ec, ERR_RDGAM);
i = osrp2(buf + 7); /* get number of superclasses */
obj = osrp2(buf + 1); /* get object number */
if (i && osfrb(fp, buf + 9, 2 * i)) errsig(ec, ERR_RDGAM);
vociadd(vctx, (objnum)obj, (objnum)osrp2(buf+3),
i, (objnum *)(buf + 9), buf[0] | VOCIFXLAT);
vocinh(vctx, obj)->vociilc = osrp2(buf + 5);
curpos += 9 + (2 * i);
}
}
}
else if (fioisrsc(buf, "REQ"))
{
curpos = osfpos(fp) - startofs;
siz = endpos - curpos;
if (osfrb(fp, buf, (uint)siz)) errsig(ec, ERR_RDGAM);
vctx->voccxme = vctx->voccxme_init = osrp2(buf);
vctx->voccxvtk = osrp2(buf+2);
vctx->voccxstr = osrp2(buf+4);
vctx->voccxnum = osrp2(buf+6);
vctx->voccxprd = osrp2(buf+8);
vctx->voccxvag = osrp2(buf+10);
vctx->voccxini = osrp2(buf+12);
vctx->voccxpre = osrp2(buf+14);
vctx->voccxper = osrp2(buf+16);
/* if we have a cmdPrompt function, read it */
if (siz >= 20)
vctx->voccxprom = osrp2(buf + 18);
else
vctx->voccxprom = MCMONINV;
/* if we have the NLS functions, read them */
if (siz >= 26)
{
vctx->voccxpdis = osrp2(buf + 20);
vctx->voccxper2 = osrp2(buf + 22);
vctx->voccxpdef = osrp2(buf + 24);
}
else
{
/* the new NLS functions aren't defined in this file */
vctx->voccxpdis = MCMONINV;
vctx->voccxper2 = MCMONINV;
vctx->voccxpdef = MCMONINV;
}
/* test for parseAskobj separately, as it was added later */
if (siz >= 28)
vctx->voccxpask = osrp2(buf + 26);
else
vctx->voccxpask = MCMONINV;
/* test for preparseCmd separately - it's another late comer */
if (siz >= 30)
vctx->voccxppc = osrp2(buf + 28);
else
vctx->voccxppc = MCMONINV;
/* check for parseAskobjActor separately - another late comer */
if (siz >= 32)
vctx->voccxpask2 = osrp2(buf + 30);
else
vctx->voccxpask2 = MCMONINV;
/* if we have parseErrorParam, read it as well */
if (siz >= 34)
{
vctx->voccxperp = osrp2(buf + 32);
}
else
{
/* parseErrorParam isn't defined in this file */
vctx->voccxperp = MCMONINV;
}
/*
* if we have commandAfterRead and initRestore, read them as
* well
*/
if (siz >= 38)
{
vctx->voccxpostprom = osrp2(buf + 34);
vctx->voccxinitrestore = osrp2(buf + 36);
}
else
{
/* these new functions aren't defined in this game */
vctx->voccxpostprom = MCMONINV;
vctx->voccxinitrestore = MCMONINV;
}
/* check for and read parseUnknownVerb, parseNounPhrase */
if (siz >= 42)
{
vctx->voccxpuv = osrp2(buf + 38);
vctx->voccxpnp = osrp2(buf + 40);
}
else
{
vctx->voccxpuv = MCMONINV;
vctx->voccxpnp = MCMONINV;
}
/* check for postAction, endCommand */
if (siz >= 48)
{
vctx->voccxpostact = osrp2(buf + 42);
vctx->voccxendcmd = osrp2(buf + 44);
vctx->voccxprecmd = osrp2(buf + 46);
}
else
{
vctx->voccxpostact = MCMONINV;
vctx->voccxendcmd = MCMONINV;
vctx->voccxprecmd = MCMONINV;
}
/* check for parseAskobjIndirect */
if (siz >= 50)
vctx->voccxpask3 = osrp2(buf + 48);
else
vctx->voccxpask3 = MCMONINV;
/* check for preparseExt and parseDefaultExt */
if (siz >= 54)
{
vctx->voccxpre2 = osrp2(buf + 50);
vctx->voccxpdef2 = osrp2(buf + 52);
}
else
{
vctx->voccxpre2 = MCMONINV;
vctx->voccxpdef2 = MCMONINV;
}
}
else if (fioisrsc(buf, "VOC"))
{
uchar *p;
uchar *bufp;
ulong siz;
int len1;
int len2;
/* do it in a single file read, if we can, for speed */
curpos = osfpos(fp) - startofs;
siz = endpos - curpos;
if (siz && siz < OSMALMAX
&& (bufp = p = (uchar *)osmalloc((size_t)siz)) != 0)
{
uchar *p1;
ulong siz2;
uint sizcur;
for (p1 = p, siz2 = siz ; siz2 ; siz2 -= sizcur, p1 += sizcur)
{
sizcur = (siz2 > (uint)0xffff ? (uint)0xffff : siz2);
if (osfrb(fp, p1, sizcur)) errsig(ec, ERR_RDGAM);
}
while (siz)
{
len1 = osrp2(p);
len2 = osrp2(p + 2);
if (*flagp & FIOFCRYPT)
fioxor(p + 10, (uint)(len1 + len2),
xor_seed, xor_inc);
vocadd2(vctx, (prpnum)osrp2(p+4), (objnum)osrp2(p+6),
osrp2(p+8), p + 10, len1,
(len2 ? p + 10 + len1 : (uchar*)0), len2);
p += 10 + len1 + len2;
siz -= 10 + len1 + len2;
}
/* done with the temporary block; free it up */
osfree(bufp);
}
else
{
/* can't do it in one file read; do it the slow way */
while (curpos != endpos)
{
if (osfrb(fp, buf, 10)
|| osfrb(fp, buf + 10,
(len1 = osrp2(buf)) + (len2 = osrp2(buf + 2))))
errsig(ec, ERR_RDGAM);
if (*flagp & FIOFCRYPT)
fioxor(buf + 10, (uint)(len1 + len2),
xor_seed, xor_inc);
vocadd2(vctx, (prpnum)osrp2(buf+4), (objnum)osrp2(buf+6),
osrp2(buf+8), buf + 10, len1,
(len2 ? buf + 10 + len1 : (uchar*)0), len2);
curpos += 10 + len1 + len2;
}
}
}
else if (fioisrsc(buf, "FMTSTR"))
{
uchar *fmts;
uint fmtl;
if (osfrb(fp, buf, 2)) errsig(ec, ERR_RDGAM);
fmtl = osrp2(buf);
fmts = mchalo(vctx->voccxerr, fmtl, "fiord1");
if (osfrb(fp, fmts, fmtl)) errsig(ec, ERR_RDGAM);
if (*flagp & FIOFCRYPT) fioxor(fmts, fmtl, xor_seed, xor_inc);
tiosetfmt(vctx->voccxtio, vctx->voccxrun, fmts, fmtl);
if (fmtsp) *fmtsp = fmts;
if (fmtlp) *fmtlp = fmtl;
}
else if (fioisrsc(buf, "CMPD"))
{
if (osfrb(fp, buf, 2)) errsig(ec, ERR_RDGAM);
vctx->voccxcpl = osrp2(buf);
vctx->voccxcpp = (char *)mchalo(vctx->voccxerr,
vctx->voccxcpl, "fiord1");
if (osfrb(fp, vctx->voccxcpp, (uint)vctx->voccxcpl))
errsig(ec, ERR_RDGAM);
if (*flagp & FIOFCRYPT)
fioxor((uchar *)vctx->voccxcpp, (uint)vctx->voccxcpl,
xor_seed, xor_inc);
}
else if (fioisrsc(buf, "SPECWORD"))
{
if (osfrb(fp, buf, 2)) errsig(ec, ERR_RDGAM);
vctx->voccxspl = osrp2(buf);
vctx->voccxspp = (char *)mchalo(vctx->voccxerr,
vctx->voccxspl, "fiord1");
if (osfrb(fp, vctx->voccxspp, (uint)vctx->voccxspl))
errsig(ec, ERR_RDGAM);
if (*flagp & FIOFCRYPT)
fioxor((uchar *)vctx->voccxspp, (uint)vctx->voccxspl,
xor_seed, xor_inc);
}
else if (fioisrsc(buf, "SYMTAB"))
{
tokthdef *symtab;
/* if there's no debugger context, don't bother with this */
if (!vctx->voccxrun->runcxdbg)
{
osfseek(fp, endpos + startofs, OSFSK_SET);
continue;
}
if (!(symtab = vctx->voccxrun->runcxdbg->dbgcxtab))
{
symtab = (tokthdef *)mchalo(ec, sizeof(tokthdef),
"fiord:symtab");
tokthini(ec, mctx, (toktdef *)symtab);
vctx->voccxrun->runcxdbg->dbgcxtab = symtab;
}
/* read symbols until we find a zero-length symbol */
for (;;)
{
int hash;
if (osfrb(fp, buf, 4)) errsig(ec, ERR_RDGAM);
if (buf[0] == 0) break;
if (osfrb(fp, buf + 4, (int)buf[0])) errsig(ec, ERR_RDGAM);
buf[4 + buf[0]] = '\0';
hash = tokhsh((char *)buf + 4);
(*symtab->tokthsc.toktfadd)((toktdef *)symtab,
(char *)buf + 4,
(int)buf[0], (int)buf[1],
osrp2(buf + 2), hash);
}
}
else if (fioisrsc(buf, "SRC"))
{
/* skip source file id's if there's no debugger context */
if (vctx->voccxrun->runcxdbg == 0)
{
osfseek(fp, endpos + startofs, OSFSK_SET);
continue;
}
while ((osfpos(fp) - startofs) != endpos)
{
/* the only thing we know how to read is linfdef's */
if (linfload(fp, vctx->voccxrun->runcxdbg, ec, path))
errsig(ec, ERR_RDGAM);
}
}
else if (fioisrsc(buf, "SRC2"))
{
/*
* this is simply a marker indicating that we have new-style
* (line-number-based) source debugging information in the
* file -- set the new-style debug info flag
*/
if (vctx->voccxrun->runcxdbg != 0)
vctx->voccxrun->runcxdbg->dbgcxflg |= DBGCXFLIN2;
/* the contents are empty - skip the block */
osfseek(fp, endpos + startofs, OSFSK_SET);
}
else if (fioisrsc(buf, "PREINIT"))
{
if (osfrb(fp, buf, 2)) errsig(ec, ERR_RDGAM);
*preinit = osrp2(buf);
}
else if (fioisrsc(buf, "ERRMSG"))
{
errini(ec, fp);
osfseek(fp, endpos + startofs, OSFSK_SET);
}
else if (fioisrsc(buf, "EXTCNT"))
{
uchar *p;
ushort len;
ulong siz;
curpos = osfpos(fp) - startofs;
siz = endpos - curpos;
if (osfrb(fp, buf, 2)) errsig(ec, ERR_RDGAM);
i = osrp2(buf);
len = i * sizeof(runxdef);
p = mchalo(ec, len, "fiord:runxdef");
memset(p, 0, (size_t)len);
vctx->voccxrun->runcxext = (runxdef *)p;
vctx->voccxrun->runcxexc = i;
/* see if start-of-XFCN information is present */
if (siz >= 6)
{
/* get location of first XFCN, and seek there */
if (osfrb(fp, buf, 4)) errsig(ec, ERR_RDGAM);
xfcn_pos = osrp4(buf);
}
/* seek past this resource */
osfseek(fp, endpos + startofs, OSFSK_SET);
}
else if (fioisrsc(buf, "PRPCNT"))
{
if (osfrb(fp, buf, 2)) errsig(ec, ERR_RDGAM);
if (pcntptr) *pcntptr = osrp2(buf);
}
else if (fioisrsc(buf, "TADSPP") && tctx != 0)
{
tok_read_defines(tctx, fp, ec);
}
else if (fioisrsc(buf, "XSI"))
{
if (osfrb(fp, buf, 2)) errsig(ec, ERR_RDGAM);
setupctx->fiolcxseed = xor_seed = buf[0];
setupctx->fiolcxinc = xor_inc = buf[1];
osfseek(fp, endpos + startofs, OSFSK_SET);
}
else if (fioisrsc(buf, "CHRSET"))
{
size_t len;
/* read the character set ID and LDESC */
if (osfrb(fp, buf, 6)
|| (len = osrp2(buf+4)) > CMAP_LDESC_MAX_LEN
|| osfrb(fp, buf+6, len))
errsig(ec, ERR_RDGAM);
/* establish this character set mapping */
buf[4] = '\0';
cmap_set_game_charset(ec, (char *)buf, (char *)buf + 6, argv0);
}
else if (fioisrsc(buf, "$EOF"))
{
if (eof_reset)
{
osfseek(fp, eof_reset, OSFSK_SET); /* back after EXTCNT */
eof_reset = 0; /* really done at next EOF */
#if 0 // XFCNs are obsolete
xfcns_done = TRUE; /* don't do XFCNs again */
#endif
}
else
break;
}
else
errsig(ec, ERR_UNKRSC);
}
}
/* read binary file */
void fiord(mcmcxdef *mctx, voccxdef *vctx, tokcxdef *tctx, char *fname,
char *exename, fiolcxdef *setupctx, objnum *preinit, uint *flagp,
tokpdef *path, uchar **fmtsp, uint *fmtlp, uint *pcntptr,
int flags, struct appctxdef *appctx, char *argv0)
{
osfildef *fp;
ulong startofs;
char *display_fname;
/* presume there will be no need to run preinit */
*preinit = MCMONINV;
/*
* get the display filename - use the real filename if one is
* provided, otherwise use the name of the executable file itself
*/
display_fname = (fname != 0 ? fname : exename);
/* save the filename in G_os_gamename */
if (display_fname != 0)
{
size_t copylen;
/* limit the copy to the buffer size */
if ((copylen = strlen(display_fname)) > sizeof(G_os_gamename) - 1)
copylen = sizeof(G_os_gamename) - 1;
/* save it */
memcpy(G_os_gamename, display_fname, copylen);
G_os_gamename[copylen] = '\0';
}
else
G_os_gamename[0] = '\0';
/* open the file and read and check file header */
fp = (fname != 0 ? osfoprb(fname, OSFTGAME)
: os_exeseek(exename, "TGAM"));
if (fp == 0)
errsig(vctx->voccxerr, ERR_OPRGAM);
/*
* we've identified the .GAM file source - tell the host system
* about it, if it's interested
*/
if (appctx != 0 && appctx->set_game_name != 0)
(*appctx->set_game_name)(appctx->set_game_name_ctx, display_fname);
/* remember starting location in file */
startofs = osfpos(fp);
ERRBEGIN(vctx->voccxerr)
/*
* Read the game file. Note that the .GAM file always has resource
* file number zero.
*/
fiord1(mctx, vctx, tctx, fp, display_fname,
setupctx, startofs, preinit, flagp, path,
fmtsp, fmtlp, pcntptr, flags, appctx, argv0);
/*
* If the host system accepts additional resource files, look for
* additional resource files. These are files in the same directory
* as the .GAM file, with the .GAM suffix replaced by suffixes from
*. RS0 to .RS9.
*/
if (appctx != 0 && appctx->add_resfile != 0)
{
char suffix_lc[4];
char suffix_uc[4];
int i;
char *base_name;
/* use the game or executable filename, as appropriate */
base_name = display_fname;
/* build the initial suffixes - try both upper- and lower-case */
suffix_uc[0] = 'R';
suffix_uc[1] = 'S';
suffix_uc[3] = '\0';
suffix_lc[0] = 'r';
suffix_lc[1] = 's';
suffix_lc[3] = '\0';
/* loop through each possible suffix (.RS0 through .RS9) */
for (i = 0 ; i < 9 ; ++i)
{
char resname[OSFNMAX];
osfildef *fpres;
int resfileno;
/*
* Build the next resource filename. If there's an explicit
* resource path, use it, otherwise use the same directory
* that contains the .GAM file.
*/
if (appctx->ext_res_path != 0)
{
/*
* There's an explicit resource path - append the root
* (filename-only, minus path) portion of the .GAM file
* name to the resource path.
*/
os_build_full_path(resname, sizeof(resname),
appctx->ext_res_path,
os_get_root_name(base_name));
}
else
{
/*
* there's no resource path - use the entire .GAM
* filename, including directory, so that we look in the
* same directory that contains the .GAM file
*/
if (base_name != 0)
strcpy(resname, base_name);
else
resname[0] = '\0';
}
/* add the current extension (replacing any current extension) */
os_remext(resname);
suffix_lc[2] = suffix_uc[2] = '0' + i;
os_addext(resname, suffix_lc);
/* try opening the file */
fpres = osfoprb(resname, OSFTGAME);
/* if that didn't work, try the upper-case name */
if (fpres == 0)
{
/* replace the suffix with the upper-case version */
os_remext(resname);
os_addext(resname, suffix_uc);
/* try again with the new name */
fpres = osfoprb(resname, OSFTGAME);
}
/* if we opened it successfully, read it */
if (fpres != 0)
{
/* tell the host system about it */
resfileno = (*appctx->add_resfile)
(appctx->add_resfile_ctx, resname);
/* read the file */
fiordrscext(vctx->voccxerr, fpres, appctx,
resfileno, resname);
/* we're done with the file, so close it */
osfcls(fpres);
}
}
}
ERRCLEAN(vctx->voccxerr)
/* if an error occurs during read, clean up by closing the file */
osfcls(fp);
ERRENDCLN(vctx->voccxerr);
}
/* save game header */
#define FIOSAVHDR "TADS2 save\012\015\032"
/* save game header prefix - .GAM file information */
#define FIOSAVHDR_PREFIX "TADS2 save/g\012\015\032"
/*
* Saved game format version string - note that the length of the
* version string must be fixed, so when this is updated, it must be
* updated to another string of the same length. This should be updated
* whenever a change is made to the format that can't be otherwise
* detected from the data stream in the saved game file.
*/
#define FIOSAVVSN "v2.2.1"
/* old saved game format version strings */
#define FIOSAVVSN1 "v2.2.0"
/* read fuse/daemon/alarm record */
static int fiorfda(osfildef *fp, vocddef *p, uint cnt)
{
vocddef *q;
uint i;
uchar buf[14];
/* start by clearing out entire record */
for (i = 0, q = p ; i < cnt ; ++q, ++i)
q->vocdfn = MCMONINV;
/* now restore all the records from the file */
for (;;)
{
/* read a record, and quit if it's the last one */
if (osfrb(fp, buf, 13)) return(TRUE);
if ((i = osrp2(buf)) == 0xffff) return(FALSE);
/* restore this record */
q = p + i;
q->vocdfn = osrp2(buf+2);
q->vocdarg.runstyp = buf[4];
switch(buf[4])
{
case DAT_NUMBER:
q->vocdarg.runsv.runsvnum = osrp4s(buf+5);
break;
case DAT_OBJECT:
case DAT_FNADDR:
q->vocdarg.runsv.runsvobj = osrp2(buf+5);
break;
case DAT_PROPNUM:
q->vocdarg.runsv.runsvprp = osrp2(buf+5);
break;
}
q->vocdprp = osrp2(buf+9);
q->vocdtim = osrp2(buf+11);
}
}
/*
* Look in a saved game file to determine if it has information on which
* GAM file created it. If the GAM file information is available, this
* routine returns true and stores the game file name in the given
* buffer; if the information isn't available, we'll return false.
*/
int fiorso_getgame(char *saved_file, char *fnamebuf, size_t buflen)
{
osfildef *fp;
uint namelen;
char buf[sizeof(FIOSAVHDR_PREFIX) + 2];
/* open the input file */
if (!(fp = osfoprb(saved_file, OSFTSAVE)))
return FALSE;
/* read the prefix header and check */
if (osfrb(fp, buf, (int)(sizeof(FIOSAVHDR_PREFIX) + 2))
|| memcmp(buf, FIOSAVHDR_PREFIX, sizeof(FIOSAVHDR_PREFIX)) != 0)
{
/*
* there's no game file information - close the file and
* indicate that we have no information
*/
osfcls(fp);
return FALSE;
}
/* get the length of the filename */
namelen = osrp2(buf + sizeof(FIOSAVHDR_PREFIX));
if (namelen > buflen - 1)
namelen = buflen - 1;
/* read the filename */
if (osfrb(fp, fnamebuf, namelen))
{
osfcls(fp);
return FALSE;
}
/* null-terminate the string */
fnamebuf[namelen] = '\0';
/* done with the file */
osfcls(fp);
/* indicate that we found the information */
return TRUE;
}
/* restore game: returns TRUE on failure */
int fiorso(voccxdef *vctx, char *fname)
{
osfildef *fp;
objnum obj;
uchar *p;
uchar *mut;
uint mutsiz;
uint oldmutsiz;
int propcnt;
mcmcxdef *mctx = vctx->voccxmem;
uchar buf[sizeof(FIOSAVHDR) + sizeof(FIOSAVVSN)];
ushort newsiz;
int err = FALSE;
char timestamp[26];
int version = 0; /* version ID - 0 = current version */
int result;
/* presume success */
result = FIORSO_SUCCESS;
/* open the input file */
if (!(fp = osfoprb(fname, OSFTSAVE)))
return FIORSO_FILE_NOT_FOUND;
/* check for a prefix header - if it's there, skip it */
if (!osfrb(fp, buf, (int)(sizeof(FIOSAVHDR_PREFIX) + 2))
&& memcmp(buf, FIOSAVHDR_PREFIX, sizeof(FIOSAVHDR_PREFIX)) == 0)
{
ulong skip_len;
/*
* The prefix header is present - skip it. The 2-byte value
* following the header is the length of the prefix data block
* (not including the header), so simply skip the additional
* number of bytes specified.
*/
skip_len = (ulong)osrp2(buf + sizeof(FIOSAVHDR_PREFIX));
osfseek(fp, skip_len, OSFSK_CUR);
}
else
{
/*
* there's no prefix header - seek back to the start of the file
* and read the standard header information
*/
osfseek(fp, 0, OSFSK_SET);
}
/* read headers and check */
if (osfrb(fp, buf, (int)(sizeof(FIOSAVHDR) + sizeof(FIOSAVVSN)))
|| memcmp(buf, FIOSAVHDR, (size_t)sizeof(FIOSAVHDR)))
{
/* it's not a saved game file */
result = FIORSO_NOT_SAVE_FILE;
goto ret_error;
}
/* check the version string */
if (memcmp(buf + sizeof(FIOSAVHDR), FIOSAVVSN,
(size_t)sizeof(FIOSAVVSN)) == 0)
{
/* it's the current version */
version = 0;
}
else if (memcmp(buf + sizeof(FIOSAVHDR), FIOSAVVSN1,
(size_t)sizeof(FIOSAVVSN1)) == 0)
{
/* it's old version #1 */
version = 1;
}
else
{
/*
* this isn't a recognized version - the file must have been
* saved by a newer version of the system, so we can't assume we
* will be able to parse the format
*/
result = FIORSO_BAD_FMT_VSN;
goto ret_error;
}
/*
* Read timestamp and check - the game must have been saved by the
* same .GAM file that we are now running, because the .SAV file is
* written entirely in terms of the contents of the .GAM file; any
* change in the .GAM file invalidates the .SAV file.
*/
if (osfrb(fp, timestamp, 26)
|| memcmp(timestamp, vctx->voccxtim, (size_t)26))
{
result = FIORSO_BAD_GAME_VSN;
goto ret_error;
}
/* first revert every object to original (post-compilation) state */
vocrevert(vctx);
/*
* the most common error from here on is simply a file read error,
* so presume that this is what will happen; if we are successful or
* encounter a different error, we'll change the status at that
* point
*/
result = FIORSO_READ_ERROR;
/* go through file and load changed objects */
for (;;)
{
/* get the header */
if (osfrb(fp, buf, 7))
goto ret_error;
/* get the object number from the header, and stop if we're done */
obj = osrp2(buf+1);
if (obj == MCMONINV)
break;
/* if the object was dynamically allocated, recreate it */
if (buf[0] == 1)
{
int sccnt;
objnum sc;
/* create the object */
mutsiz = osrp2(buf + 3);
p = mcmalonum(mctx, (ushort)mutsiz, (mcmon)obj);
/* read the object's contents */
if (osfrb(fp, p, mutsiz))
goto ret_error;
/* get the superclass data (at most one superclass) */
sccnt = objnsc(p);
if (sccnt) sc = osrp2(objsc(p));
/* create inheritance records for the object */
vociadd(vctx, obj, MCMONINV, sccnt, &sc, VOCIFNEW | VOCIFVOC);
#if 0
{
int wrdcnt;
/* read the object's vocabulary and add it back */
if (osfrb(fp, buf, 2))
goto ret_error;
wrdcnt = osrp2(buf);
while (wrdcnt--)
{
int len1;
int len2;
char wrd[80];
/* read the header */
if (osfrb(fp, buf, 6))
goto ret_error;
len1 = osrp2(buf+2);
len2 = osrp2(buf+4);
/* read the word text */
if (osfrb(fp, wrd, len1 + len2))
goto ret_error;
/* add the word */
vocadd2(vctx, buf[0], obj, buf[1], wrd, len1,
wrd + len1, len2);
}
}
#endif
}
else
{
/* get the remaining data from the header */
propcnt = osrp2(buf + 3);
mutsiz = osrp2(buf + 5);
/* expand object if it's not big enough for mutsiz */
p = mcmlck(mctx, (mcmon)obj);
oldmutsiz = mcmobjsiz(mctx, (mcmon)obj) - objrst(p);
if (oldmutsiz < mutsiz)
{
newsiz = mutsiz - oldmutsiz;
p = (uchar *)objexp(mctx, obj, &newsiz);
}
/* reset statistics, and read mutable part from file */
mut = p + objrst(p);
objsnp(p, propcnt);
objsfree(p, mutsiz + objrst(p));
if (osfrb(fp, mut, mutsiz))
err = TRUE;
/* reset ignore flags as needed */
objsetign(mctx, obj);
}
/* touch and unlock the object */
mcmtch(mctx, (mcmon)obj);
mcmunlck(mctx, (mcmon)obj);
if (err)
goto ret_error;
}
/* read fuses/daemons/alarms */
if (fiorfda(fp, vctx->voccxdmn, vctx->voccxdmc)
|| fiorfda(fp, vctx->voccxfus, vctx->voccxfuc)
|| fiorfda(fp, vctx->voccxalm, vctx->voccxalc))
goto ret_error;
/* read the dynamically added and deleted vocabulary */
for (;;)
{
int len1;
int len2;
char wrd[80];
int flags;
int typ;
/* read the header */
if (osfrb(fp, buf, 8))
goto ret_error;
typ = buf[0];
flags = buf[1];
len1 = osrp2(buf+2);
len2 = osrp2(buf+4);
obj = osrp2(buf+6);
/* check to see if this is the end marker */
if (obj == MCMONINV) break;
/* read the word text */
if (osfrb(fp, wrd+2, len1))
goto ret_error;
if (len2)
{
wrd[len1 + 2] = ' ';
if (osfrb(fp, &wrd[len1 + 3], len2))
goto ret_error;
oswp2(wrd, len1 + len2 + 3);
}
else
oswp2(wrd, len1 + 2);
/* add or delete the word as appropriate */
if (flags & VOCFDEL)
vocdel1(vctx, obj, (char *)wrd, (prpnum)typ, FALSE, FALSE, FALSE);
else
vocadd2(vctx, buf[0], obj, buf[1], (uchar *)wrd+2, len1,
(uchar *)wrd+len1, len2);
}
/*
* the following was added in save format version "v2.2.1", so skip
* it if the save version is older than that
*/
if (version != 1)
{
/* read the current "Me" object */
if (osfrb(fp, buf, 2))
goto ret_error;
vctx->voccxme = osrp2(buf);
}
/* done - close file and return success indication */
osfcls(fp);
return FIORSO_SUCCESS;
/* come here on failure - close file and return error indication */
ret_error:
osfcls(fp);
return result;
}
/* write fuse/daemon/alarm block */
static int fiowfda(osfildef *fp, vocddef *p, uint cnt)
{
uchar buf[14];
uint i;
for (i = 0 ; i < cnt ; ++i, ++p)
{
if (p->vocdfn == MCMONINV) continue; /* not set - ignore */
oswp2(buf, i); /* element in array to be set */
oswp2(buf+2, p->vocdfn); /* object number for function/target */
buf[4] = p->vocdarg.runstyp; /* type of argument */
switch(buf[4])
{
case DAT_NUMBER:
oswp4s(buf+5, p->vocdarg.runsv.runsvnum);
break;
case DAT_OBJECT:
case DAT_FNADDR:
oswp2(buf+5, p->vocdarg.runsv.runsvobj);
break;
case DAT_PROPNUM:
oswp2(buf+5, p->vocdarg.runsv.runsvprp);
break;
}
oswp2(buf+9, p->vocdprp);
oswp2(buf+11, p->vocdtim);
/* write this record to file */
if (osfwb(fp, buf, 13)) return(TRUE);
}
/* write end record - -1 for array element number */
oswp2(buf, 0xffff);
return(osfwb(fp, buf, 13));
}
/* context for vocabulary saver callback function */
struct fiosav_cb_ctx
{
int err;
osfildef *fp;
};
#ifdef NEVER
/*
* callback for vocabulary saver - called by voc_iterate for each word
* defined for a particular object, allowing us to write all the words
* attached to a dynamically allocated object to the save file
*/
static void fiosav_cb(struct fiosav_cb_ctx *ctx,
vocdef *voc, vocwdef *vocw)
{
char buf[10];
/* write the part of speech, flags, and word lengths */
buf[0] = vocw->vocwtyp;
buf[1] = vocw->vocwflg;
oswp2(buf+2, voc->voclen);
oswp2(buf+4, voc->vocln2);
if (osfwb(ctx->fp, buf, 6)) ctx->err = TRUE;
/* write the words */
if (osfwb(ctx->fp, voc->voctxt, voc->voclen + voc->vocln2))
ctx->err = TRUE;
}
#endif
/*
* Callback for vocabulary saver - called by voc_iterate for every
* word. We'll write the word if it was dynamically added or deleted,
* so that we can restore that status when the game is restored.
*/
static void fiosav_voc_cb(void *ctx0, vocdef *voc, vocwdef *vocw)
{
struct fiosav_cb_ctx *ctx = (struct fiosav_cb_ctx *)ctx0;
char buf[10];
/* if the word was dynamically allocated or deleted, save it */
if ((vocw->vocwflg & VOCFNEW) || (vocw->vocwflg & VOCFDEL))
{
/* write the header information */
buf[0] = vocw->vocwtyp;
buf[1] = vocw->vocwflg;
oswp2(buf+2, voc->voclen);
oswp2(buf+4, voc->vocln2);
oswp2(buf+6, vocw->vocwobj);
if (osfwb(ctx->fp, buf, 8)) ctx->err = TRUE;
/* write the words */
if (osfwb(ctx->fp, voc->voctxt, voc->voclen + voc->vocln2))
ctx->err = TRUE;
}
}
/* save game; returns TRUE on failure */
int fiosav(voccxdef *vctx, char *fname, char *game_fname)
{
osfildef *fp;
vocidef ***vpg;
vocidef **v;
int i;
int j;
objnum obj;
uchar *p;
uchar *mut;
uint mutsiz;
int propcnt;
mcmcxdef *mctx = vctx->voccxmem;
uchar buf[8];
int err = FALSE;
struct fiosav_cb_ctx fnctx;
/* open the output file */
if ((fp = osfopwb(fname, OSFTSAVE)) == 0)
return TRUE;
/*
* If we have game file information, save the game file information
* with the saved game file. This lets the player start the
* run-time and restore the game by specifying only the saved game
* file.
*/
if (game_fname != 0)
{
size_t len;
/* write the prefix header */
len = strlen(game_fname);
oswp2(buf, len);
if (osfwb(fp, FIOSAVHDR_PREFIX, (int)sizeof(FIOSAVHDR_PREFIX))
|| osfwb(fp, buf, 2)
|| osfwb(fp, game_fname, (int)len))
goto ret_error;
}
/* write save game header and timestamp */
if (osfwb(fp, FIOSAVHDR, (int)sizeof(FIOSAVHDR))
|| osfwb(fp, FIOSAVVSN, (int)sizeof(FIOSAVVSN))
|| osfwb(fp, vctx->voccxtim, 26))
goto ret_error;
/* go through each object, and write if it's been changed */
for (vpg = vctx->voccxinh, i = 0 ; i < VOCINHMAX ; ++vpg, ++i)
{
if (!*vpg) continue;
for (v = *vpg, obj = (i << 8), j = 0 ; j < 256 ; ++v, ++obj, ++j)
{
if (*v != 0)
{
/* write object if it's dirty */
if (mcmobjdirty(mctx, (mcmon)obj))
{
p = mcmlck(mctx, (mcmon)obj);
mut = p + objrst(p);
propcnt = objnprop(p);
mutsiz = objfree(p) - objrst(p);
if ((objflg(p) & OBJFINDEX) != 0)
mutsiz += propcnt * 4;
/*
* If the object was dynamically allocated, write
* the whole object. Otherwise, write just the
* mutable part.
*/
if ((*v)->vociflg & VOCIFNEW)
{
/* indicate that the object is dynamic */
buf[0] = 1;
oswp2(buf + 1, obj);
/* write the entire object */
mutsiz = objfree(p);
oswp2(buf + 3, mutsiz);
if (osfwb(fp, buf, 7)
|| osfwb(fp, p, mutsiz))
err = TRUE;
#ifdef NEVER
{
int wrdcnt;
/* count the words, and write the count */
voc_count(vctx, obj, 0, &wrdcnt, (int *)0);
oswp2(buf, wrdcnt);
if (osfwb(fp, buf, 2))
err = TRUE;
/* write the words */
fnctx.err = 0;
fnctx.fp = fp;
voc_iterate(vctx, obj, fiosav_cb, &fnctx);
if (fnctx.err != 0)
err = TRUE;
}
#endif
}
else if (mutsiz)
{
/* write number of properties, size of mut, and mut */
buf[0] = 0; /* indicate that the object is static */
oswp2(buf + 1, obj);
oswp2(buf + 3, propcnt);
oswp2(buf + 5, mutsiz);
if (osfwb(fp, buf, 7)
|| osfwb(fp, mut, mutsiz))
err = TRUE;
}
mcmunlck(mctx, (mcmon)obj);
if (err != 0)
goto ret_error;
}
}
}
}
/* write end-of-objects indication */
buf[0] = 0;
oswp2(buf + 1, MCMONINV);
oswp4(buf + 3, 0);
if (osfwb(fp, buf, 7))
goto ret_error;
/* write fuses/daemons/alarms */
if (fiowfda(fp, vctx->voccxdmn, vctx->voccxdmc)
|| fiowfda(fp, vctx->voccxfus, vctx->voccxfuc)
|| fiowfda(fp, vctx->voccxalm, vctx->voccxalc))
goto ret_error;
/* write run-time vocabulary additions and deletions */
fnctx.fp = fp;
fnctx.err = 0;
voc_iterate(vctx, MCMONINV, fiosav_voc_cb, &fnctx);
if (fnctx.err)
goto ret_error;
/* write end marker for vocabulary additions and deletions */
oswp2(buf+6, MCMONINV);
if (osfwb(fp, buf, 8))
goto ret_error;
/* write the current "Me" object */
oswp2(buf, vctx->voccxme);
if (osfwb(fp, buf, 2))
goto ret_error;
/* done - close file and return success indication */
osfcls(fp);
os_settype(fname, OSFTSAVE);
return FALSE;
/* come here on failure - close file and return error indication */
ret_error:
osfcls(fp);
return TRUE;
}
|