static struct argnod *r_arg(Shell_t *shp)
{
register struct argnod *ap=0, *apold, *aptop=0;
register long l;
Stk_t *stkp=shp->stk;
while((l=sfgetu(infile))>0)
{
ap = (struct argnod*)stkseek(stkp,(unsigned)l+ARGVAL);
if(!aptop)
aptop = ap;
else
apold->argnxt.ap = ap;
if(--l > 0)
{
sfread(infile,ap->argval,(size_t)l);
ccmaps(ap->argval, l, CC_ASCII, CC_NATIVE);
}
ap->argval[l] = 0;
ap->argchn.cp = 0;
ap->argflag = sfgetc(infile);
#if 0
if((ap->argflag&ARG_MESSAGE) && *ap->argval)
{
/* replace international messages */
sh_endword(shp,1);
ap->argflag &= ~ARG_MESSAGE;
if(!(ap->argflag&(ARG_MAC|ARG_EXP)))
ap = sh_endword(shp,0);
else
{
ap = (struct argnod*)stkfreeze(stkp,0);
if(ap->argflag==0)
ap->argflag = ARG_RAW;
}
}
else
#endif
ap = (struct argnod*)stkfreeze(stkp,0);
if(*ap->argval==0 && (ap->argflag&ARG_EXP))
ap->argchn.ap = (struct argnod*)r_tree(shp);
else if(*ap->argval==0 && (ap->argflag&~(ARG_APPEND|ARG_MESSAGE|ARG_QUOTED|ARG_ARRAY))==0)
{
struct fornod *fp = (struct fornod*)getnode(shp->stk,fornod);
fp->fortyp = sfgetu(infile);
fp->fortre = r_tree(shp);
fp->fornam = ap->argval+1;
ap->argchn.ap = (struct argnod*)fp;
}
apold = ap;
}
if(ap)
ap->argnxt.ap = 0;
return(aptop);
}
Shnode_t *sh_trestore(Shell_t *shp,Sfio_t *in)
{
Shnode_t *t;
infile = in;
t = r_tree(shp);
return(t);
}
static struct regnod *r_switch(Shell_t *shp)
{
register long l;
struct regnod *reg=0,*regold,*regtop=0;
while((l=sfgetl(infile))>=0)
{
reg = (struct regnod*)getnode(shp->stk,regnod);
if(!regtop)
regtop = reg;
else
regold->regnxt = reg;
reg->regflag = l;
reg->regptr = r_arg(shp);
reg->regcom = r_tree(shp);
regold = reg;
}
if(reg)
reg->regnxt = 0;
return(regtop);
}
/*
* read in a shell tree
*/
static Shnode_t *r_tree(Shell_t *shp)
{
long l = sfgetl(infile);
register int type;
register Shnode_t *t=0;
if(l<0)
return(t);
type = l;
switch(type&COMMSK)
{
case TTIME:
case TPAR:
t = getnode(shp->stk,parnod);
t->par.partre = r_tree(shp);
break;
case TCOM:
t = getnode(shp->stk,comnod);
t->tre.tretyp = type;
r_comarg(shp,(struct comnod*)t);
break;
case TSETIO:
case TFORK:
t = getnode(shp->stk,forknod);
t->fork.forkline = sfgetu(infile);
t->fork.forktre = r_tree(shp);
t->fork.forkio = r_redirect(shp);
break;
case TIF:
t = getnode(shp->stk,ifnod);
t->if_.iftre = r_tree(shp);
t->if_.thtre = r_tree(shp);
t->if_.eltre = r_tree(shp);
break;
case TWH:
t = getnode(shp->stk,whnod);
t->wh.whinc = (struct arithnod*)r_tree(shp);
t->wh.whtre = r_tree(shp);
t->wh.dotre = r_tree(shp);
break;
case TLST:
case TAND:
case TORF:
case TFIL:
t = getnode(shp->stk,lstnod);
t->lst.lstlef = r_tree(shp);
t->lst.lstrit = r_tree(shp);
break;
case TARITH:
t = getnode(shp->stk,arithnod);
t->ar.arline = sfgetu(infile);
t->ar.arexpr = r_arg(shp);
t->ar.arcomp = 0;
if((t->ar.arexpr)->argflag&ARG_RAW)
t->ar.arcomp = sh_arithcomp((t->ar.arexpr)->argval);
break;
case TFOR:
t = getnode(shp->stk,fornod);
t->for_.forline = 0;
if(type&FLINENO)
t->for_.forline = sfgetu(infile);
t->for_.fortre = r_tree(shp);
t->for_.fornam = r_string(shp->stk);
t->for_.forlst = (struct comnod*)r_tree(shp);
break;
case TSW:
t = getnode(shp->stk,swnod);
t->sw.swline = 0;
if(type&FLINENO)
t->sw.swline = sfgetu(infile);
t->sw.swarg = r_arg(shp);
if(type&COMSCAN)
t->sw.swio = r_redirect(shp);
else
t->sw.swio = 0;
t->sw.swlst = r_switch(shp);
break;
case TFUN:
{
Stak_t *savstak;
struct slnod *slp;
struct functnod *fp;
t = getnode(shp->stk,functnod);
t->funct.functloc = -1;
t->funct.functline = sfgetu(infile);
t->funct.functnam = r_string(shp->stk);
savstak = stakcreate(STAK_SMALL);
savstak = stakinstall(savstak, 0);
slp = (struct slnod*)stkalloc(shp->stk,sizeof(struct slnod)+sizeof(struct functnod));
slp->slchild = 0;
slp->slnext = shp->st.staklist;
shp->st.staklist = 0;
fp = (struct functnod*)(slp+1);
memset(fp, 0, sizeof(*fp));
fp->functtyp = TFUN|FAMP;
if(shp->st.filename)
fp->functnam = stkcopy(shp->stk,shp->st.filename);
t->funct.functtre = r_tree(shp);
t->funct.functstak = slp;
slp->slptr = stakinstall(savstak,0);
slp->slchild = shp->st.staklist;
t->funct.functargs = (struct comnod*)r_tree(shp);
break;
}
case TTST:
t = getnode(shp->stk,tstnod);
t->tst.tstline = sfgetu(infile);
if((type&TPAREN)==TPAREN)
t->lst.lstlef = r_tree(shp);
else
{
t->lst.lstlef = (Shnode_t*)r_arg(shp);
if((type&TBINARY))
t->lst.lstrit = (Shnode_t*)r_arg(shp);
}
}
if(t)
t->tre.tretyp = type;
return(t);
}
