[p5sagit/p5-mst-13.2.git] / evalargs.xc

/* This file is included by eval.c.  It's separate from eval.c to keep
 * kit sizes from getting too big.
 */

/* $Header: evalargs.xc,v 3.0.1.6 90/08/09 03:37:15 lwall Locked $
 *
 * $Log:	evalargs.xc,v $
 * Revision 3.0.1.6  90/08/09  03:37:15  lwall
 * patch19: passing *name to subroutine now forces filehandle and array creation
 * patch19: `command` in array context now returns array of lines
 * patch19: <handle> input is a little more efficient
 * 
 * Revision 3.0.1.5  90/03/27  15:54:42  lwall
 * patch16: MSDOS support
 * 
 * Revision 3.0.1.4  90/02/28  17:38:37  lwall
 * patch9: $#foo -= 2 didn't work
 * 
 * Revision 3.0.1.3  89/11/17  15:25:07  lwall
 * patch5: constant numeric subscripts disappeared in ?:
 * 
 * Revision 3.0.1.2  89/11/11  04:33:05  lwall
 * patch2: Configure now locates csh
 * 
 * Revision 3.0.1.1  89/10/26  23:12:55  lwall
 * patch1: glob didn't free a temporary string
 * 
 * Revision 3.0  89/10/18  15:17:16  lwall
 * 3.0 baseline
 * 
 */

    for (anum = 1; anum <= maxarg; anum++) {
	argflags = arg[anum].arg_flags;
	argtype = arg[anum].arg_type;
	argptr = arg[anum].arg_ptr;
      re_eval:
	switch (argtype) {
	default:
	    st[++sp] = &str_undef;
#ifdef DEBUGGING
	    tmps = "NULL";
#endif
	    break;
	case A_EXPR:
#ifdef DEBUGGING
	    if (debug & 8) {
		tmps = "EXPR";
		deb("%d.EXPR =>\n",anum);
	    }
#endif
	    sp = eval(argptr.arg_arg,
		(argflags & AF_ARYOK) ? G_ARRAY : G_SCALAR, sp);
	    if (sp + (maxarg - anum) > stack->ary_max)
		astore(stack, sp + (maxarg - anum), Nullstr);
	    st = stack->ary_array;	/* possibly reallocated */
	    break;
	case A_CMD:
#ifdef DEBUGGING
	    if (debug & 8) {
		tmps = "CMD";
		deb("%d.CMD (%lx) =>\n",anum,argptr.arg_cmd);
	    }
#endif
	    sp = cmd_exec(argptr.arg_cmd, gimme, sp);
	    if (sp + (maxarg - anum) > stack->ary_max)
		astore(stack, sp + (maxarg - anum), Nullstr);
	    st = stack->ary_array;	/* possibly reallocated */
	    break;
	case A_LARYSTAB:
	    ++sp;
	    switch (optype) {
		case O_ITEM2: argtype = 2; break;
		case O_ITEM3: argtype = 3; break;
		default:      argtype = anum; break;
	    }
	    str = afetch(stab_array(argptr.arg_stab),
		arg[argtype].arg_len - arybase, TRUE);
#ifdef DEBUGGING
	    if (debug & 8) {
		(void)sprintf(buf,"LARYSTAB $%s[%d]",stab_name(argptr.arg_stab),
		    arg[argtype].arg_len);
		tmps = buf;
	    }
#endif
	    goto do_crement;
	case A_ARYSTAB:
	    switch (optype) {
		case O_ITEM2: argtype = 2; break;
		case O_ITEM3: argtype = 3; break;
		default:      argtype = anum; break;
	    }
	    st[++sp] = afetch(stab_array(argptr.arg_stab),
		arg[argtype].arg_len - arybase, FALSE);
	    if (!st[sp])
		st[sp] = &str_undef;
#ifdef DEBUGGING
	    if (debug & 8) {
		(void)sprintf(buf,"ARYSTAB $%s[%d]",stab_name(argptr.arg_stab),
		    arg[argtype].arg_len);
		tmps = buf;
	    }
#endif
	    break;
	case A_STAR:
	    stab = argptr.arg_stab;
	    st[++sp] = (STR*)stab;
	    if (!stab_xarray(stab))
		aadd(stab);
	    if (!stab_xhash(stab))
		hadd(stab);
	    if (!stab_io(stab))
		stab_io(stab) = stio_new();
#ifdef DEBUGGING
	    if (debug & 8) {
		(void)sprintf(buf,"STAR *%s",stab_name(argptr.arg_stab));
		tmps = buf;
	    }
#endif
	    break;
	case A_LSTAR:
	    str = st[++sp] = (STR*)argptr.arg_stab;
#ifdef DEBUGGING
	    if (debug & 8) {
		(void)sprintf(buf,"LSTAR *%s",stab_name(argptr.arg_stab));
		tmps = buf;
	    }
#endif
	    break;
	case A_STAB:
	    st[++sp] = STAB_STR(argptr.arg_stab);
#ifdef DEBUGGING
	    if (debug & 8) {
		(void)sprintf(buf,"STAB $%s",stab_name(argptr.arg_stab));
		tmps = buf;
	    }
#endif
	    break;
	case A_LEXPR:
#ifdef DEBUGGING
	    if (debug & 8) {
		tmps = "LEXPR";
		deb("%d.LEXPR =>\n",anum);
	    }
#endif
	    if (argflags & AF_ARYOK) {
		sp = eval(argptr.arg_arg, G_ARRAY, sp);
		if (sp + (maxarg - anum) > stack->ary_max)
		    astore(stack, sp + (maxarg - anum), Nullstr);
		st = stack->ary_array;	/* possibly reallocated */
	    }
	    else {
		sp = eval(argptr.arg_arg, G_SCALAR, sp);
		st = stack->ary_array;	/* possibly reallocated */
		str = st[sp];
		goto do_crement;
	    }
	    break;
	case A_LVAL:
#ifdef DEBUGGING
	    if (debug & 8) {
		(void)sprintf(buf,"LVAL $%s",stab_name(argptr.arg_stab));
		tmps = buf;
	    }
#endif
	    ++sp;
	    str = STAB_STR(argptr.arg_stab);
	    if (!str)
		fatal("panic: A_LVAL");
	  do_crement:
	    assigning = TRUE;
	    if (argflags & AF_PRE) {
		if (argflags & AF_UP)
		    str_inc(str);
		else
		    str_dec(str);
		STABSET(str);
		st[sp] = str;
		str = arg->arg_ptr.arg_str;
	    }
	    else if (argflags & AF_POST) {
		st[sp] = str_static(str);
		if (argflags & AF_UP)
		    str_inc(str);
		else
		    str_dec(str);
		STABSET(str);
		str = arg->arg_ptr.arg_str;
	    }
	    else
		st[sp] = str;
	    break;
	case A_LARYLEN:
	    ++sp;
	    stab = argptr.arg_stab;
	    str = stab_array(argptr.arg_stab)->ary_magic;
	    if (optype != O_SASSIGN || argflags & (AF_PRE|AF_POST))
		str_numset(str,(double)(stab_array(stab)->ary_fill+arybase));
#ifdef DEBUGGING
	    tmps = "LARYLEN";
#endif
	    if (!str)
		fatal("panic: A_LEXPR");
	    goto do_crement;
	case A_ARYLEN:
	    stab = argptr.arg_stab;
	    st[++sp] = stab_array(stab)->ary_magic;
	    str_numset(st[sp],(double)(stab_array(stab)->ary_fill+arybase));
#ifdef DEBUGGING
	    tmps = "ARYLEN";
#endif
	    break;
	case A_SINGLE:
	    st[++sp] = argptr.arg_str;
#ifdef DEBUGGING
	    tmps = "SINGLE";
#endif
	    break;
	case A_DOUBLE:
	    (void) interp(str,argptr.arg_str,sp);
	    st = stack->ary_array;
	    st[++sp] = str;
#ifdef DEBUGGING
	    tmps = "DOUBLE";
#endif
	    break;
	case A_BACKTICK:
	    tmps = str_get(interp(str,argptr.arg_str,sp));
	    st = stack->ary_array;
#ifdef TAINT
	    taintproper("Insecure dependency in ``");
#endif
	    fp = mypopen(tmps,"r");
	    str_set(str,"");
	    if (fp) {
		if (gimme == G_SCALAR) {
		    while (str_gets(str,fp,str->str_cur) != Nullch)
			;
		}
		else {
		    for (;;) {
			if (++sp > stack->ary_max) {
			    astore(stack, sp, Nullstr);
			    st = stack->ary_array;
			}
			st[sp] = str_static(&str_undef);
			if (str_gets(st[sp],fp,0) == Nullch) {
			    sp--;
			    break;
			}
		    }
		}
		statusvalue = mypclose(fp);
	    }
	    else
		statusvalue = -1;

	    if (gimme == G_SCALAR)
		st[++sp] = str;
#ifdef DEBUGGING
	    tmps = "BACK";
#endif
	    break;
	case A_WANTARRAY:
	    {
		if (wantarray == G_ARRAY)
		    st[++sp] = &str_yes;
		else
		    st[++sp] = &str_no;
	    }
#ifdef DEBUGGING
	    tmps = "WANTARRAY";
#endif
	    break;
	case A_INDREAD:
	    last_in_stab = stabent(str_get(STAB_STR(argptr.arg_stab)),TRUE);
	    old_record_separator = record_separator;
	    goto do_read;
	case A_GLOB:
	    argflags |= AF_POST;	/* enable newline chopping */
	    last_in_stab = argptr.arg_stab;
	    old_record_separator = record_separator;
#ifdef MSDOS
	    record_separator = 0;
#else
#ifdef CSH
	    record_separator = 0;
#else
	    record_separator = '\n';
#endif	/* !CSH */
#endif	/* !MSDOS */
	    goto do_read;
	case A_READ:
	    last_in_stab = argptr.arg_stab;
	    old_record_separator = record_separator;
	  do_read:
	    if (anum > 1)		/* assign to scalar */
		gimme = G_SCALAR;	/* force context to scalar */
	    if (gimme == G_ARRAY)
		str = str_static(&str_undef);
	    ++sp;
	    fp = Nullfp;
	    if (stab_io(last_in_stab)) {
		fp = stab_io(last_in_stab)->ifp;
		if (!fp) {
		    if (stab_io(last_in_stab)->flags & IOF_ARGV) {
			if (stab_io(last_in_stab)->flags & IOF_START) {
			    stab_io(last_in_stab)->flags &= ~IOF_START;
			    stab_io(last_in_stab)->lines = 0;
			    if (alen(stab_array(last_in_stab)) < 0) {
				tmpstr = str_make("-",1); /* assume stdin */
				(void)apush(stab_array(last_in_stab), tmpstr);
			    }
			}
			fp = nextargv(last_in_stab);
			if (!fp) { /* Note: fp != stab_io(last_in_stab)->ifp */
			    (void)do_close(last_in_stab,FALSE); /* now it does*/
			    stab_io(last_in_stab)->flags |= IOF_START;
			}
		    }
		    else if (argtype == A_GLOB) {
			(void) interp(str,stab_val(last_in_stab),sp);
			st = stack->ary_array;
			tmpstr = Str_new(55,0);
#ifdef MSDOS
			str_set(tmpstr, "glob ");
			str_scat(tmpstr,str);
			str_cat(tmpstr," |");
#else
#ifdef CSH
			str_nset(tmpstr,cshname,cshlen);
			str_cat(tmpstr," -cf 'set nonomatch; glob ");
			str_scat(tmpstr,str);
			str_cat(tmpstr,"'|");
#else
			str_set(tmpstr, "echo ");
			str_scat(tmpstr,str);
			str_cat(tmpstr,
			  "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
#endif /* !CSH */
#endif /* !MSDOS */
			(void)do_open(last_in_stab,tmpstr->str_ptr,
			  tmpstr->str_cur);
			fp = stab_io(last_in_stab)->ifp;
			str_free(tmpstr);
		    }
		}
	    }
	    if (!fp && dowarn)
		warn("Read on closed filehandle <%s>",stab_name(last_in_stab));
	  keepgoing:
	    if (!fp)
		st[sp] = &str_undef;
	    else if (!str_gets(str,fp, optype == O_RCAT ? str->str_cur : 0)) {
		clearerr(fp);
		if (stab_io(last_in_stab)->flags & IOF_ARGV) {
		    fp = nextargv(last_in_stab);
		    if (fp)
			goto keepgoing;
		    (void)do_close(last_in_stab,FALSE);
		    stab_io(last_in_stab)->flags |= IOF_START;
		}
		else if (argflags & AF_POST) {
		    (void)do_close(last_in_stab,FALSE);
		}
		st[sp] = &str_undef;
		record_separator = old_record_separator;
		if (gimme == G_ARRAY) {
		    --sp;
		    goto array_return;
		}
		break;
	    }
	    else {
		stab_io(last_in_stab)->lines++;
		st[sp] = str;
#ifdef TAINT
		str->str_tainted = 1; /* Anything from the outside world...*/
#endif
		if (argflags & AF_POST) {
		    if (str->str_cur > 0)
			str->str_cur--;
		    if (str->str_ptr[str->str_cur] == record_separator)
			str->str_ptr[str->str_cur] = '\0';
		    else
			str->str_cur++;
		    for (tmps = str->str_ptr; *tmps; tmps++)
			if (!isalpha(*tmps) && !isdigit(*tmps) &&
			    index("$&*(){}[]'\";\\|?<>~`",*tmps))
				break;
		    if (*tmps && stat(str->str_ptr,&statbuf) < 0)
			goto keepgoing;		/* unmatched wildcard? */
		}
		if (gimme == G_ARRAY) {
		    if (++sp > stack->ary_max) {
			astore(stack, sp, Nullstr);
			st = stack->ary_array;
		    }
		    str = str_static(&str_undef);
		    goto keepgoing;
		}
	    }
	    record_separator = old_record_separator;
#ifdef DEBUGGING
	    tmps = "READ";
#endif
	    break;
	}
#ifdef DEBUGGING
	if (debug & 8)
	    deb("%d.%s = '%s'\n",anum,tmps,str_peek(st[sp]));
#endif
	if (anum < 8)
	    arglast[anum] = sp;
    }
Commit	Line	Data
a687059c	1	/* This file is included by eval.c. It's separate from eval.c to keep
	2	* kit sizes from getting too big.
	3	*/
	4
154e51a4	5	/* $Header: evalargs.xc,v 3.0.1.6 90/08/09 03:37:15 lwall Locked $
a687059c	6	*
a687059c	7	* $Log: evalargs.xc,v $
154e51a4	8	* Revision 3.0.1.6 90/08/09 03:37:15 lwall
	9	* patch19: passing *name to subroutine now forces filehandle and array creation
	10	* patch19: `command` in array context now returns array of lines
	11	* patch19: <handle> input is a little more efficient
	12	*
b1248f16	13	* Revision 3.0.1.5 90/03/27 15:54:42 lwall
	14	* patch16: MSDOS support
	15	*
ac58e20f	16	* Revision 3.0.1.4 90/02/28 17:38:37 lwall
	17	* patch9: $#foo -= 2 didn't work
	18	*
0d3e774c	19	* Revision 3.0.1.3 89/11/17 15:25:07 lwall
	20	* patch5: constant numeric subscripts disappeared in ?:
	21	*
bf38876a	22	* Revision 3.0.1.2 89/11/11 04:33:05 lwall
	23	* patch2: Configure now locates csh
	24	*
03a14243	25	* Revision 3.0.1.1 89/10/26 23:12:55 lwall
	26	* patch1: glob didn't free a temporary string
	27	*
a687059c	28	* Revision 3.0 89/10/18 15:17:16 lwall
	29	* 3.0 baseline
	30	*
	31	*/
	32
	33	for (anum = 1; anum <= maxarg; anum++) {
	34	argflags = arg[anum].arg_flags;
	35	argtype = arg[anum].arg_type;
	36	argptr = arg[anum].arg_ptr;
	37	re_eval:
	38	switch (argtype) {
	39	default:
	40	st[++sp] = &str_undef;
	41	#ifdef DEBUGGING
	42	tmps = "NULL";
	43	#endif
	44	break;
	45	case A_EXPR:
	46	#ifdef DEBUGGING
	47	if (debug & 8) {
	48	tmps = "EXPR";
	49	deb("%d.EXPR =>\n",anum);
	50	}
	51	#endif
	52	sp = eval(argptr.arg_arg,
	53	(argflags & AF_ARYOK) ? G_ARRAY : G_SCALAR, sp);
	54	if (sp + (maxarg - anum) > stack->ary_max)
	55	astore(stack, sp + (maxarg - anum), Nullstr);
	56	st = stack->ary_array; /* possibly reallocated */
	57	break;
	58	case A_CMD:
	59	#ifdef DEBUGGING
	60	if (debug & 8) {
	61	tmps = "CMD";
	62	deb("%d.CMD (%lx) =>\n",anum,argptr.arg_cmd);
	63	}
	64	#endif
	65	sp = cmd_exec(argptr.arg_cmd, gimme, sp);
	66	if (sp + (maxarg - anum) > stack->ary_max)
	67	astore(stack, sp + (maxarg - anum), Nullstr);
	68	st = stack->ary_array; /* possibly reallocated */
	69	break;
	70	case A_LARYSTAB:
	71	++sp;
0d3e774c	72	switch (optype) {
	73	case O_ITEM2: argtype = 2; break;
	74	case O_ITEM3: argtype = 3; break;
	75	default: argtype = anum; break;
	76	}
a687059c	77	str = afetch(stab_array(argptr.arg_stab),
0d3e774c	78	arg[argtype].arg_len - arybase, TRUE);
a687059c	79	#ifdef DEBUGGING
	80	if (debug & 8) {
	81	(void)sprintf(buf,"LARYSTAB $%s[%d]",stab_name(argptr.arg_stab),
0d3e774c	82	arg[argtype].arg_len);
a687059c	83	tmps = buf;
	84	}
	85	#endif
	86	goto do_crement;
	87	case A_ARYSTAB:
0d3e774c	88	switch (optype) {
	89	case O_ITEM2: argtype = 2; break;
	90	case O_ITEM3: argtype = 3; break;
	91	default: argtype = anum; break;
	92	}
a687059c	93	st[++sp] = afetch(stab_array(argptr.arg_stab),
0d3e774c	94	arg[argtype].arg_len - arybase, FALSE);
a687059c	95	if (!st[sp])
	96	st[sp] = &str_undef;
	97	#ifdef DEBUGGING
	98	if (debug & 8) {
	99	(void)sprintf(buf,"ARYSTAB $%s[%d]",stab_name(argptr.arg_stab),
0d3e774c	100	arg[argtype].arg_len);
a687059c	101	tmps = buf;
	102	}
	103	#endif
	104	break;
	105	case A_STAR:
154e51a4	106	stab = argptr.arg_stab;
	107	st[++sp] = (STR*)stab;
	108	if (!stab_xarray(stab))
	109	aadd(stab);
	110	if (!stab_xhash(stab))
	111	hadd(stab);
	112	if (!stab_io(stab))
	113	stab_io(stab) = stio_new();
a687059c	114	#ifdef DEBUGGING
	115	if (debug & 8) {
	116	(void)sprintf(buf,"STAR *%s",stab_name(argptr.arg_stab));
	117	tmps = buf;
	118	}
	119	#endif
	120	break;
	121	case A_LSTAR:
	122	str = st[++sp] = (STR*)argptr.arg_stab;
	123	#ifdef DEBUGGING
	124	if (debug & 8) {
	125	(void)sprintf(buf,"LSTAR *%s",stab_name(argptr.arg_stab));
	126	tmps = buf;
	127	}
	128	#endif
	129	break;
	130	case A_STAB:
	131	st[++sp] = STAB_STR(argptr.arg_stab);
	132	#ifdef DEBUGGING
	133	if (debug & 8) {
	134	(void)sprintf(buf,"STAB $%s",stab_name(argptr.arg_stab));
	135	tmps = buf;
	136	}
	137	#endif
	138	break;
	139	case A_LEXPR:
	140	#ifdef DEBUGGING
	141	if (debug & 8) {
	142	tmps = "LEXPR";
	143	deb("%d.LEXPR =>\n",anum);
	144	}
	145	#endif
	146	if (argflags & AF_ARYOK) {
	147	sp = eval(argptr.arg_arg, G_ARRAY, sp);
	148	if (sp + (maxarg - anum) > stack->ary_max)
	149	astore(stack, sp + (maxarg - anum), Nullstr);
	150	st = stack->ary_array; /* possibly reallocated */
	151	}
	152	else {
	153	sp = eval(argptr.arg_arg, G_SCALAR, sp);
	154	st = stack->ary_array; /* possibly reallocated */
	155	str = st[sp];
	156	goto do_crement;
	157	}
	158	break;
	159	case A_LVAL:
	160	#ifdef DEBUGGING
	161	if (debug & 8) {
	162	(void)sprintf(buf,"LVAL $%s",stab_name(argptr.arg_stab));
	163	tmps = buf;
	164	}
	165	#endif
	166	++sp;
	167	str = STAB_STR(argptr.arg_stab);
	168	if (!str)
	169	fatal("panic: A_LVAL");
	170	do_crement:
	171	assigning = TRUE;
	172	if (argflags & AF_PRE) {
	173	if (argflags & AF_UP)
	174	str_inc(str);
	175	else
	176	str_dec(str);
	177	STABSET(str);
178	st[sp] = str;
179	str = arg->arg_ptr.arg_str;
180	}
181	else if (argflags & AF_POST) {
182	st[sp] = str_static(str);
183	if (argflags & AF_UP)
184	str_inc(str);
185	else
186	str_dec(str);
187	STABSET(str);
188	str = arg->arg_ptr.arg_str;
189	}
190	else
191	st[sp] = str;
192	break;
193	case A_LARYLEN:
194	++sp;
195	stab = argptr.arg_stab;
196	str = stab_array(argptr.arg_stab)->ary_magic;
ac58e20f	197	if (optype != O_SASSIGN \|\| argflags & (AF_PRE\|AF_POST))
a687059c	198	str_numset(str,(double)(stab_array(stab)->ary_fill+arybase));
	199	#ifdef DEBUGGING
	200	tmps = "LARYLEN";
	201	#endif
	202	if (!str)
	203	fatal("panic: A_LEXPR");
	204	goto do_crement;
	205	case A_ARYLEN:
	206	stab = argptr.arg_stab;
	207	st[++sp] = stab_array(stab)->ary_magic;
	208	str_numset(st[sp],(double)(stab_array(stab)->ary_fill+arybase));
	209	#ifdef DEBUGGING
	210	tmps = "ARYLEN";
	211	#endif
	212	break;
	213	case A_SINGLE:
	214	st[++sp] = argptr.arg_str;
	215	#ifdef DEBUGGING
	216	tmps = "SINGLE";
	217	#endif
	218	break;
	219	case A_DOUBLE:
	220	(void) interp(str,argptr.arg_str,sp);
	221	st = stack->ary_array;
	222	st[++sp] = str;
	223	#ifdef DEBUGGING
	224	tmps = "DOUBLE";
	225	#endif
	226	break;
	227	case A_BACKTICK:
	228	tmps = str_get(interp(str,argptr.arg_str,sp));
	229	st = stack->ary_array;
	230	#ifdef TAINT
	231	taintproper("Insecure dependency in ``");
	232	#endif
	233	fp = mypopen(tmps,"r");
	234	str_set(str,"");
	235	if (fp) {
154e51a4	236	if (gimme == G_SCALAR) {
	237	while (str_gets(str,fp,str->str_cur) != Nullch)
	238	;
	239	}
	240	else {
	241	for (;;) {
	242	if (++sp > stack->ary_max) {
	243	astore(stack, sp, Nullstr);
	244	st = stack->ary_array;
	245	}
	246	st[sp] = str_static(&str_undef);
	247	if (str_gets(st[sp],fp,0) == Nullch) {
	248	sp--;
	249	break;
	250	}
	251	}
	252	}
a687059c	253	statusvalue = mypclose(fp);
	254	}
	255	else
	256	statusvalue = -1;
	257
154e51a4	258	if (gimme == G_SCALAR)
154e51a4	259	st[++sp] = str;
a687059c	260	#ifdef DEBUGGING
	261	tmps = "BACK";
	262	#endif
	263	break;
	264	case A_WANTARRAY:
	265	{
a687059c	266	if (wantarray == G_ARRAY)
	267	st[++sp] = &str_yes;
	268	else
	269	st[++sp] = &str_no;
	270	}
	271	#ifdef DEBUGGING
	272	tmps = "WANTARRAY";
	273	#endif
	274	break;
	275	case A_INDREAD:
	276	last_in_stab = stabent(str_get(STAB_STR(argptr.arg_stab)),TRUE);
	277	old_record_separator = record_separator;
	278	goto do_read;
	279	case A_GLOB:
	280	argflags \|= AF_POST; /* enable newline chopping */
	281	last_in_stab = argptr.arg_stab;
	282	old_record_separator = record_separator;
b1248f16	283	#ifdef MSDOS
	284	record_separator = 0;
	285	#else
bf38876a	286	#ifdef CSH
	287	record_separator = 0;
	288	#else
	289	record_separator = '\n';
b1248f16	290	#endif /* !CSH */
b1248f16	291	#endif /* !MSDOS */
a687059c	292	goto do_read;
	293	case A_READ:
	294	last_in_stab = argptr.arg_stab;
	295	old_record_separator = record_separator;
	296	do_read:
	297	if (anum > 1) /* assign to scalar */
	298	gimme = G_SCALAR; /* force context to scalar */
154e51a4	299	if (gimme == G_ARRAY)
154e51a4	300	str = str_static(&str_undef);
a687059c	301	++sp;
	302	fp = Nullfp;
	303	if (stab_io(last_in_stab)) {
	304	fp = stab_io(last_in_stab)->ifp;
	305	if (!fp) {
	306	if (stab_io(last_in_stab)->flags & IOF_ARGV) {
	307	if (stab_io(last_in_stab)->flags & IOF_START) {
	308	stab_io(last_in_stab)->flags &= ~IOF_START;
	309	stab_io(last_in_stab)->lines = 0;
	310	if (alen(stab_array(last_in_stab)) < 0) {
	311	tmpstr = str_make("-",1); /* assume stdin */
	312	(void)apush(stab_array(last_in_stab), tmpstr);
	313	}
	314	}
	315	fp = nextargv(last_in_stab);
bf38876a	316	if (!fp) { /* Note: fp != stab_io(last_in_stab)->ifp */
a687059c	317	(void)do_close(last_in_stab,FALSE); /* now it does*/
bf38876a	318	stab_io(last_in_stab)->flags \|= IOF_START;
bf38876a	319	}
a687059c	320	}
	321	else if (argtype == A_GLOB) {
	322	(void) interp(str,stab_val(last_in_stab),sp);
	323	st = stack->ary_array;
	324	tmpstr = Str_new(55,0);
b1248f16	325	#ifdef MSDOS
	326	str_set(tmpstr, "glob ");
	327	str_scat(tmpstr,str);
	328	str_cat(tmpstr," \|");
	329	#else
bf38876a	330	#ifdef CSH
	331	str_nset(tmpstr,cshname,cshlen);
	332	str_cat(tmpstr," -cf 'set nonomatch; glob ");
	333	str_scat(tmpstr,str);
	334	str_cat(tmpstr,"'\|");
	335	#else
	336	str_set(tmpstr, "echo ");
	337	str_scat(tmpstr,str);
	338	str_cat(tmpstr,
	339	"\|tr -s ' \t\f\r' '\\012\\012\\012\\012'\|");
b1248f16	340	#endif /* !CSH */
b1248f16	341	#endif /* !MSDOS */
ac58e20f	342	(void)do_open(last_in_stab,tmpstr->str_ptr,
ac58e20f	343	tmpstr->str_cur);
a687059c	344	fp = stab_io(last_in_stab)->ifp;
03a14243	345	str_free(tmpstr);
a687059c	346	}
	347	}
	348	}
	349	if (!fp && dowarn)
	350	warn("Read on closed filehandle <%s>",stab_name(last_in_stab));
	351	keepgoing:
	352	if (!fp)
	353	st[sp] = &str_undef;
	354	else if (!str_gets(str,fp, optype == O_RCAT ? str->str_cur : 0)) {
	355	clearerr(fp);
	356	if (stab_io(last_in_stab)->flags & IOF_ARGV) {
	357	fp = nextargv(last_in_stab);
	358	if (fp)
	359	goto keepgoing;
	360	(void)do_close(last_in_stab,FALSE);
	361	stab_io(last_in_stab)->flags \|= IOF_START;
	362	}
	363	else if (argflags & AF_POST) {
	364	(void)do_close(last_in_stab,FALSE);
	365	}
	366	st[sp] = &str_undef;
	367	record_separator = old_record_separator;
	368	if (gimme == G_ARRAY) {
	369	--sp;
	370	goto array_return;
	371	}
	372	break;
	373	}
	374	else {
	375	stab_io(last_in_stab)->lines++;
	376	st[sp] = str;
	377	#ifdef TAINT
	378	str->str_tainted = 1; /* Anything from the outside world...*/
	379	#endif
	380	if (argflags & AF_POST) {
	381	if (str->str_cur > 0)
	382	str->str_cur--;
	383	if (str->str_ptr[str->str_cur] == record_separator)
	384	str->str_ptr[str->str_cur] = '\0';
	385	else
	386	str->str_cur++;
	387	for (tmps = str->str_ptr; *tmps; tmps++)
	388	if (!isalpha(tmps) && !isdigit(tmps) &&
	389	index("$&(){}[]'\";\\\|?<>~`",tmps))
	390	break;
	391	if (*tmps && stat(str->str_ptr,&statbuf) < 0)
	392	goto keepgoing; /* unmatched wildcard? */
	393	}
	394	if (gimme == G_ARRAY) {
a687059c	395	if (++sp > stack->ary_max) {
	396	astore(stack, sp, Nullstr);
	397	st = stack->ary_array;
	398	}
154e51a4	399	str = str_static(&str_undef);
a687059c	400	goto keepgoing;
	401	}
	402	}
	403	record_separator = old_record_separator;
	404	#ifdef DEBUGGING
	405	tmps = "READ";
	406	#endif
	407	break;
	408	}
	409	#ifdef DEBUGGING
	410	if (debug & 8)
	411	deb("%d.%s = '%s'\n",anum,tmps,str_peek(st[sp]));
	412	#endif
	413	if (anum < 8)
	414	arglast[anum] = sp;
	415	}