[p5sagit/p5-mst-13.2.git] / stab.c

/* $Header: stab.c,v 3.0 89/10/18 15:23:23 lwall Locked $
 *
 *    Copyright (c) 1989, Larry Wall
 *
 *    You may distribute under the terms of the GNU General Public License
 *    as specified in the README file that comes with the perl 3.0 kit.
 *
 * $Log:	stab.c,v $
 * Revision 3.0  89/10/18  15:23:23  lwall
 * 3.0 baseline
 * 
 */

#include "EXTERN.h"
#include "perl.h"

#include <signal.h>

/* This oughta be generated by Configure. */

static char *sig_name[] = {
    SIG_NAME,0
};

extern int errno;
extern int sys_nerr;
extern char *sys_errlist[];

STR *
stab_str(str)
STR *str;
{
    STAB *stab = str->str_u.str_stab;
    register int paren;
    register char *s;
    register int i;

    if (str->str_rare)
	return stab_val(stab);

    switch (*stab->str_magic->str_ptr) {
    case '0': case '1': case '2': case '3': case '4':
    case '5': case '6': case '7': case '8': case '9': case '&':
	if (curspat) {
	    paren = atoi(stab_name(stab));
	  getparen:
	    if (curspat->spat_regexp &&
	      paren <= curspat->spat_regexp->nparens &&
	      (s = curspat->spat_regexp->startp[paren]) ) {
		i = curspat->spat_regexp->endp[paren] - s;
		if (i >= 0)
		    str_nset(stab_val(stab),s,i);
		else
		    str_sset(stab_val(stab),&str_undef);
	    }
	    else
		str_sset(stab_val(stab),&str_undef);
	}
	break;
    case '+':
	if (curspat) {
	    paren = curspat->spat_regexp->lastparen;
	    goto getparen;
	}
	break;
    case '`':
	if (curspat) {
	    if (curspat->spat_regexp &&
	      (s = curspat->spat_regexp->subbase) ) {
		i = curspat->spat_regexp->startp[0] - s;
		if (i >= 0)
		    str_nset(stab_val(stab),s,i);
		else
		    str_nset(stab_val(stab),"",0);
	    }
	    else
		str_nset(stab_val(stab),"",0);
	}
	break;
    case '\'':
	if (curspat) {
	    if (curspat->spat_regexp &&
	      (s = curspat->spat_regexp->endp[0]) ) {
		str_set(stab_val(stab),s);
	    }
	    else
		str_nset(stab_val(stab),"",0);
	}
	break;
    case '.':
#ifndef lint
	if (last_in_stab) {
	    str_numset(stab_val(stab),(double)stab_io(last_in_stab)->lines);
	}
#endif
	break;
    case '?':
	str_numset(stab_val(stab),(double)statusvalue);
	break;
    case '^':
	s = stab_io(curoutstab)->top_name;
	str_set(stab_val(stab),s);
	break;
    case '~':
	s = stab_io(curoutstab)->fmt_name;
	str_set(stab_val(stab),s);
	break;
#ifndef lint
    case '=':
	str_numset(stab_val(stab),(double)stab_io(curoutstab)->page_len);
	break;
    case '-':
	str_numset(stab_val(stab),(double)stab_io(curoutstab)->lines_left);
	break;
    case '%':
	str_numset(stab_val(stab),(double)stab_io(curoutstab)->page);
	break;
#endif
    case '/':
	*tokenbuf = record_separator;
	tokenbuf[1] = '\0';
	str_nset(stab_val(stab),tokenbuf,rslen);
	break;
    case '[':
	str_numset(stab_val(stab),(double)arybase);
	break;
    case '|':
	str_numset(stab_val(stab),
	   (double)((stab_io(curoutstab)->flags & IOF_FLUSH) != 0) );
	break;
    case ',':
	str_nset(stab_val(stab),ofs,ofslen);
	break;
    case '\\':
	str_nset(stab_val(stab),ors,orslen);
	break;
    case '#':
	str_set(stab_val(stab),ofmt);
	break;
    case '!':
	str_numset(stab_val(stab), (double)errno);
	str_set(stab_val(stab),
	  errno < 0 || errno > sys_nerr ? "(unknown)" : sys_errlist[errno]);
	stab_val(stab)->str_nok = 1;	/* what a wonderful hack! */
	break;
    case '<':
	str_numset(stab_val(stab),(double)uid);
	break;
    case '>':
	str_numset(stab_val(stab),(double)euid);
	break;
    case '(':
	s = buf;
	(void)sprintf(s,"%d",(int)gid);
	goto add_groups;
    case ')':
	s = buf;
	(void)sprintf(s,"%d",(int)egid);
      add_groups:
	while (*s) s++;
#ifdef GETGROUPS
#ifndef NGROUPS
#define NGROUPS 32
#endif
	{
	    GIDTYPE gary[NGROUPS];

	    i = getgroups(NGROUPS,gary);
	    while (--i >= 0) {
		(void)sprintf(s," %ld", (long)gary[i]);
		while (*s) s++;
	    }
	}
#endif
	str_set(stab_val(stab),buf);
	break;
    }
    return stab_val(stab);
}

stabset(mstr,str)
register STR *mstr;
STR *str;
{
    STAB *stab = mstr->str_u.str_stab;
    char *s;
    int i;
    int sighandler();

    switch (mstr->str_rare) {
    case 'E':
	setenv(mstr->str_ptr,str_get(str));
				/* And you'll never guess what the dog had */
	break;			/*   in its mouth... */
    case 'S':
	s = str_get(str);
	i = whichsig(mstr->str_ptr);	/* ...no, a brick */
	if (strEQ(s,"IGNORE"))
#ifndef lint
	    (void)signal(i,SIG_IGN);
#else
	    ;
#endif
	else if (strEQ(s,"DEFAULT") || !*s)
	    (void)signal(i,SIG_DFL);
	else
	    (void)signal(i,sighandler);
	break;
#ifdef SOME_DBM
    case 'D':
	hdbmstore(stab_hash(stab),mstr->str_ptr,mstr->str_cur,str);
	break;
#endif
    case '#':
	afill(stab_array(stab), (int)str_gnum(str) - arybase);
	break;
    case 'X':	/* merely a copy of a * string */
	break;
    case '*':
	s = str_get(str);
	if (strnNE(s,"Stab",4) || str->str_cur != sizeof(STBP)) {
	    if (!*s) {
		STBP *stbp;

		(void)savenostab(stab);	/* schedule a free of this stab */
		if (stab->str_len)
		    Safefree(stab->str_ptr);
		Newz(601,stbp, 1, STBP);
		stab->str_ptr = stbp;
		stab->str_len = stab->str_cur = sizeof(STBP);
		stab->str_pok = 1;
		strncpy(stab_magic(stab),"Stab",4);
		stab_val(stab) = Str_new(70,0);
		stab_line(stab) = line;
	    }
	    else
		stab = stabent(s,TRUE);
	    str_sset(str,stab);
	}
	break;
    case 's': {
	    struct lstring *lstr = (struct lstring*)str;

	    mstr->str_rare = 0;
	    str->str_magic = Nullstr;
	    str_insert(mstr,lstr->lstr_offset,lstr->lstr_len,
	      str->str_ptr,str->str_cur);
	}
	break;

    case 'v':
	do_vecset(mstr,str);
	break;

    case 0:
	switch (*stab->str_magic->str_ptr) {
	case '^':
	    Safefree(stab_io(curoutstab)->top_name);
	    stab_io(curoutstab)->top_name = s = savestr(str_get(str));
	    stab_io(curoutstab)->top_stab = stabent(s,TRUE);
	    break;
	case '~':
	    Safefree(stab_io(curoutstab)->fmt_name);
	    stab_io(curoutstab)->fmt_name = s = savestr(str_get(str));
	    stab_io(curoutstab)->fmt_stab = stabent(s,TRUE);
	    break;
	case '=':
	    stab_io(curoutstab)->page_len = (long)str_gnum(str);
	    break;
	case '-':
	    stab_io(curoutstab)->lines_left = (long)str_gnum(str);
	    if (stab_io(curoutstab)->lines_left < 0L)
		stab_io(curoutstab)->lines_left = 0L;
	    break;
	case '%':
	    stab_io(curoutstab)->page = (long)str_gnum(str);
	    break;
	case '|':
	    stab_io(curoutstab)->flags &= ~IOF_FLUSH;
	    if (str_gnum(str) != 0.0) {
		stab_io(curoutstab)->flags |= IOF_FLUSH;
	    }
	    break;
	case '*':
	    i = (int)str_gnum(str);
	    multiline = (i != 0);
	    break;
	case '/':
	    record_separator = *str_get(str);
	    rslen = str->str_cur;
	    break;
	case '\\':
	    if (ors)
		Safefree(ors);
	    ors = savestr(str_get(str));
	    orslen = str->str_cur;
	    break;
	case ',':
	    if (ofs)
		Safefree(ofs);
	    ofs = savestr(str_get(str));
	    ofslen = str->str_cur;
	    break;
	case '#':
	    if (ofmt)
		Safefree(ofmt);
	    ofmt = savestr(str_get(str));
	    break;
	case '[':
	    arybase = (int)str_gnum(str);
	    break;
	case '?':
	    statusvalue = (unsigned short)str_gnum(str);
	    break;
	case '!':
	    errno = (int)str_gnum(str);		/* will anyone ever use this? */
	    break;
	case '<':
	    uid = (int)str_gnum(str);
#ifdef SETREUID
	    if (delaymagic) {
		delaymagic |= DM_REUID;
		break;				/* don't do magic till later */
	    }
#endif /* SETREUID */
#ifdef SETRUID
	    if (setruid((UIDTYPE)uid) < 0)
		uid = (int)getuid();
#else
#ifdef SETREUID
	    if (setreuid((UIDTYPE)uid, (UIDTYPE)-1) < 0)
		uid = (int)getuid();
#else
	    fatal("setruid() not implemented");
#endif
#endif
	    break;
	case '>':
	    euid = (int)str_gnum(str);
#ifdef SETREUID
	    if (delaymagic) {
		delaymagic |= DM_REUID;
		break;				/* don't do magic till later */
	    }
#endif /* SETREUID */
#ifdef SETEUID
	    if (seteuid((UIDTYPE)euid) < 0)
		euid = (int)geteuid();
#else
#ifdef SETREUID
	    if (setreuid((UIDTYPE)-1, (UIDTYPE)euid) < 0)
		euid = (int)geteuid();
#else
	    fatal("seteuid() not implemented");
#endif
#endif
	    break;
	case '(':
	    gid = (int)str_gnum(str);
#ifdef SETREGID
	    if (delaymagic) {
		delaymagic |= DM_REGID;
		break;				/* don't do magic till later */
	    }
#endif /* SETREGID */
#ifdef SETRGID
	    (void)setrgid((GIDTYPE)gid);
#else
#ifdef SETREGID
	    (void)setregid((GIDTYPE)gid, (GIDTYPE)-1);
#else
	    fatal("setrgid() not implemented");
#endif
#endif
	    break;
	case ')':
	    egid = (int)str_gnum(str);
#ifdef SETREGID
	    if (delaymagic) {
		delaymagic |= DM_REGID;
		break;				/* don't do magic till later */
	    }
#endif /* SETREGID */
#ifdef SETEGID
	    (void)setegid((GIDTYPE)egid);
#else
#ifdef SETREGID
	    (void)setregid((GIDTYPE)-1, (GIDTYPE)egid);
#else
	    fatal("setegid() not implemented");
#endif
#endif
	    break;
	case ':':
	    chopset = str_get(str);
	    break;
	}
	break;
    }
}

whichsig(sig)
char *sig;
{
    register char **sigv;

    for (sigv = sig_name+1; *sigv; sigv++)
	if (strEQ(sig,*sigv))
	    return sigv - sig_name;
#ifdef SIGCLD
    if (strEQ(sig,"CHLD"))
	return SIGCLD;
#endif
#ifdef SIGCHLD
    if (strEQ(sig,"CLD"))
	return SIGCHLD;
#endif
    return 0;
}

sighandler(sig)
int sig;
{
    STAB *stab;
    ARRAY *savearray;
    STR *str;
    char *oldfile = filename;
    int oldsave = savestack->ary_fill;
    ARRAY *oldstack = stack;
    SUBR *sub;

    stab = stabent(
	str_get(hfetch(stab_hash(sigstab),sig_name[sig],strlen(sig_name[sig]),
	  TRUE)), TRUE);
    sub = stab_sub(stab);
    if (!sub && *sig_name[sig] == 'C' && instr(sig_name[sig],"LD")) {
	if (sig_name[sig][1] == 'H')
	    stab = stabent(str_get(hfetch(stab_hash(sigstab),"CLD",3,TRUE)),
	      TRUE);
	else
	    stab = stabent(str_get(hfetch(stab_hash(sigstab),"CHLD",4,TRUE)),
	      TRUE);
	sub = stab_sub(stab);	/* gag */
    }
    if (!sub) {
	if (dowarn)
	    warn("SIG%s handler \"%s\" not defined.\n",
		sig_name[sig], stab_name(stab) );
	return;
    }
    savearray = stab_xarray(defstab);
    stab_xarray(defstab) = stack = anew(defstab);
    stack->ary_flags = 0;
    str = Str_new(71,0);
    str_set(str,sig_name[sig]);
    (void)apush(stab_xarray(defstab),str);
    sub->depth++;
    if (sub->depth >= 2) {	/* save temporaries on recursion? */
	if (sub->depth == 100 && dowarn)
	    warn("Deep recursion on subroutine \"%s\"",stab_name(stab));
	savelist(sub->tosave->ary_array,sub->tosave->ary_fill);
    }
    filename = sub->filename;

    (void)cmd_exec(sub->cmd,G_SCALAR,1);		/* so do it already */

    sub->depth--;	/* assuming no longjumps out of here */
    str_free(stack->ary_array[0]);	/* free the one real string */
    afree(stab_xarray(defstab));  /* put back old $_[] */
    stab_xarray(defstab) = savearray;
    stack = oldstack;
    filename = oldfile;
    if (savestack->ary_fill > oldsave)
	restorelist(oldsave);
}

STAB *
aadd(stab)
register STAB *stab;
{
    if (!stab_xarray(stab))
	stab_xarray(stab) = anew(stab);
    return stab;
}

STAB *
hadd(stab)
register STAB *stab;
{
    if (!stab_xhash(stab))
	stab_xhash(stab) = hnew(COEFFSIZE);
    return stab;
}

STAB *
stabent(name,add)
register char *name;
int add;
{
    register STAB *stab;
    register STBP *stbp;
    int len;
    register char *namend;
    HASH *stash;
    char *sawquote = Nullch;
    char *prevquote = Nullch;
    bool global = FALSE;

    if (isascii(*name) && isupper(*name)) {
	if (*name > 'I') {
	    if (*name == 'S' && (
	      strEQ(name, "SIG") ||
	      strEQ(name, "STDIN") ||
	      strEQ(name, "STDOUT") ||
	      strEQ(name, "STDERR") ))
		global = TRUE;
	}
	else if (*name > 'E') {
	    if (*name == 'I' && strEQ(name, "INC"))
		global = TRUE;
	}
	else if (*name >= 'A') {
	    if (*name == 'E' && strEQ(name, "ENV"))
		global = TRUE;
	}
	else if (*name == 'A' && (
	  strEQ(name, "ARGV") ||
	  strEQ(name, "ARGVOUT") ))
	    global = TRUE;
    }
    for (namend = name; *namend; namend++) {
	if (*namend == '\'' && namend[1])
	    prevquote = sawquote, sawquote = namend;
    }
    if (sawquote == name && name[1]) {
	stash = defstash;
	sawquote = Nullch;
	name++;
    }
    else if (!isalpha(*name) || global)
	stash = defstash;
    else
	stash = curstash;
    if (sawquote) {
	char tmpbuf[256];
	char *s, *d;

	*sawquote = '\0';
	if (s = prevquote) {
	    strncpy(tmpbuf,name,s-name+1);
	    d = tmpbuf+(s-name+1);
	    *d++ = '_';
	    strcpy(d,s+1);
	}
	else {
	    *tmpbuf = '_';
	    strcpy(tmpbuf+1,name);
	}
	stab = stabent(tmpbuf,TRUE);
	if (!(stash = stab_xhash(stab)))
	    stash = stab_xhash(stab) = hnew(0);
	name = sawquote+1;
	*sawquote = '\'';
    }
    len = namend - name;
    stab = (STAB*)hfetch(stash,name,len,add);
    if (!stab)
	return Nullstab;
    if (stab->str_pok) {
	stab->str_pok |= SP_MULTI;
	return stab;
    }
    else {
	if (stab->str_len)
	    Safefree(stab->str_ptr);
	Newz(602,stbp, 1, STBP);
	stab->str_ptr = stbp;
	stab->str_len = stab->str_cur = sizeof(STBP);
	stab->str_pok = 1;
	strncpy(stab_magic(stab),"Stab",4);
	stab_val(stab) = Str_new(72,0);
	stab_line(stab) = line;
	str_magic(stab,stab,'*',name,len);
	return stab;
    }
}

STIO *
stio_new()
{
    STIO *stio;

    Newz(603,stio,1,STIO);
    stio->page_len = 60;
    return stio;
}

stab_check(min,max)
int min;
register int max;
{
    register HENT *entry;
    register int i;
    register STAB *stab;

    for (i = min; i <= max; i++) {
	for (entry = defstash->tbl_array[i]; entry; entry = entry->hent_next) {
	    stab = (STAB*)entry->hent_val;
	    if (stab->str_pok & SP_MULTI)
		continue;
	    line = stab_line(stab);
	    warn("Possible typo: \"%s\"", stab_name(stab));
	}
    }
}

static int gensym = 0;

STAB *
genstab()
{
    (void)sprintf(tokenbuf,"_GEN_%d",gensym++);
    return stabent(tokenbuf,TRUE);
}

/* hopefully this is only called on local symbol table entries */

void
stab_clear(stab)
register STAB *stab;
{
    STIO *stio;
    SUBR *sub;

    afree(stab_xarray(stab));
    (void)hfree(stab_xhash(stab));
    str_free(stab_val(stab));
    if (stio = stab_io(stab)) {
	do_close(stab,FALSE);
	Safefree(stio->top_name);
	Safefree(stio->fmt_name);
    }
    if (sub = stab_sub(stab)) {
	afree(sub->tosave);
	cmd_free(sub->cmd);
    }
    Safefree(stab->str_ptr);
    stab->str_ptr = Null(STBP*);
    stab->str_len = 0;
    stab->str_cur = 0;
}
Commit	Line	Data
a687059c	1	/* $Header: stab.c,v 3.0 89/10/18 15:23:23 lwall Locked $
	2	*
	3	* Copyright (c) 1989, Larry Wall
	4	*
	5	* You may distribute under the terms of the GNU General Public License
	6	* as specified in the README file that comes with the perl 3.0 kit.
8d063cd8	7	*
8d063cd8	8	* $Log: stab.c,v $
a687059c	9	* Revision 3.0 89/10/18 15:23:23 lwall
a687059c	10	* 3.0 baseline
8d063cd8	11	*
	12	*/
	13
8d063cd8	14	#include "EXTERN.h"
8d063cd8	15	#include "perl.h"
8d063cd8	16
378cc40b	17	#include <signal.h>
378cc40b	18
a687059c	19	/* This oughta be generated by Configure. */
a687059c	20
8d063cd8	21	static char *sig_name[] = {
a687059c	22	SIG_NAME,0
a687059c	23	};
8d063cd8	24
2e1b3b7e	25	extern int errno;
378cc40b	26	extern int sys_nerr;
378cc40b	27	extern char *sys_errlist[];
2e1b3b7e	28
8d063cd8	29	STR *
a687059c	30	stab_str(str)
a687059c	31	STR *str;
8d063cd8	32	{
a687059c	33	STAB *stab = str->str_u.str_stab;
8d063cd8	34	register int paren;
8d063cd8	35	register char *s;
378cc40b	36	register int i;
8d063cd8	37
a687059c	38	if (str->str_rare)
	39	return stab_val(stab);
	40
	41	switch (*stab->str_magic->str_ptr) {
8d063cd8	42	case '0': case '1': case '2': case '3': case '4':
	43	case '5': case '6': case '7': case '8': case '9': case '&':
	44	if (curspat) {
a687059c	45	paren = atoi(stab_name(stab));
378cc40b	46	getparen:
	47	if (curspat->spat_regexp &&
	48	paren <= curspat->spat_regexp->nparens &&
	49	(s = curspat->spat_regexp->startp[paren]) ) {
	50	i = curspat->spat_regexp->endp[paren] - s;
	51	if (i >= 0)
a687059c	52	str_nset(stab_val(stab),s,i);
378cc40b	53	else
a687059c	54	str_sset(stab_val(stab),&str_undef);
8d063cd8	55	}
378cc40b	56	else
a687059c	57	str_sset(stab_val(stab),&str_undef);
8d063cd8	58	}
	59	break;
	60	case '+':
	61	if (curspat) {
378cc40b	62	paren = curspat->spat_regexp->lastparen;
378cc40b	63	goto getparen;
8d063cd8	64	}
8d063cd8	65	break;
a687059c	66	case '`':
	67	if (curspat) {
	68	if (curspat->spat_regexp &&
	69	(s = curspat->spat_regexp->subbase) ) {
	70	i = curspat->spat_regexp->startp[0] - s;
	71	if (i >= 0)
	72	str_nset(stab_val(stab),s,i);
	73	else
	74	str_nset(stab_val(stab),"",0);
	75	}
	76	else
	77	str_nset(stab_val(stab),"",0);
	78	}
	79	break;
	80	case '\'':
	81	if (curspat) {
	82	if (curspat->spat_regexp &&
	83	(s = curspat->spat_regexp->endp[0]) ) {
	84	str_set(stab_val(stab),s);
	85	}
	86	else
	87	str_nset(stab_val(stab),"",0);
	88	}
	89	break;
8d063cd8	90	case '.':
a687059c	91	#ifndef lint
8d063cd8	92	if (last_in_stab) {
a687059c	93	str_numset(stab_val(stab),(double)stab_io(last_in_stab)->lines);
8d063cd8	94	}
a687059c	95	#endif
8d063cd8	96	break;
8d063cd8	97	case '?':
a687059c	98	str_numset(stab_val(stab),(double)statusvalue);
8d063cd8	99	break;
8d063cd8	100	case '^':
a687059c	101	s = stab_io(curoutstab)->top_name;
a687059c	102	str_set(stab_val(stab),s);
8d063cd8	103	break;
8d063cd8	104	case '~':
a687059c	105	s = stab_io(curoutstab)->fmt_name;
a687059c	106	str_set(stab_val(stab),s);
8d063cd8	107	break;
a687059c	108	#ifndef lint
8d063cd8	109	case '=':
a687059c	110	str_numset(stab_val(stab),(double)stab_io(curoutstab)->page_len);
8d063cd8	111	break;
8d063cd8	112	case '-':
a687059c	113	str_numset(stab_val(stab),(double)stab_io(curoutstab)->lines_left);
8d063cd8	114	break;
8d063cd8	115	case '%':
a687059c	116	str_numset(stab_val(stab),(double)stab_io(curoutstab)->page);
8d063cd8	117	break;
a687059c	118	#endif
8d063cd8	119	case '/':
	120	*tokenbuf = record_separator;
	121	tokenbuf[1] = '\0';
a687059c	122	str_nset(stab_val(stab),tokenbuf,rslen);
8d063cd8	123	break;
8d063cd8	124	case '[':
a687059c	125	str_numset(stab_val(stab),(double)arybase);
8d063cd8	126	break;
8d063cd8	127	case '\|':
a687059c	128	str_numset(stab_val(stab),
a687059c	129	(double)((stab_io(curoutstab)->flags & IOF_FLUSH) != 0) );
8d063cd8	130	break;
8d063cd8	131	case ',':
a687059c	132	str_nset(stab_val(stab),ofs,ofslen);
8d063cd8	133	break;
8d063cd8	134	case '\\':
a687059c	135	str_nset(stab_val(stab),ors,orslen);
8d063cd8	136	break;
8d063cd8	137	case '#':
a687059c	138	str_set(stab_val(stab),ofmt);
8d063cd8	139	break;
8d063cd8	140	case '!':
a687059c	141	str_numset(stab_val(stab), (double)errno);
a687059c	142	str_set(stab_val(stab),
378cc40b	143	errno < 0 \|\| errno > sys_nerr ? "(unknown)" : sys_errlist[errno]);
a687059c	144	stab_val(stab)->str_nok = 1; /* what a wonderful hack! */
378cc40b	145	break;
378cc40b	146	case '<':
a687059c	147	str_numset(stab_val(stab),(double)uid);
378cc40b	148	break;
378cc40b	149	case '>':
a687059c	150	str_numset(stab_val(stab),(double)euid);
378cc40b	151	break;
378cc40b	152	case '(':
a687059c	153	s = buf;
a687059c	154	(void)sprintf(s,"%d",(int)gid);
378cc40b	155	goto add_groups;
378cc40b	156	case ')':
a687059c	157	s = buf;
a687059c	158	(void)sprintf(s,"%d",(int)egid);
378cc40b	159	add_groups:
	160	while (*s) s++;
	161	#ifdef GETGROUPS
	162	#ifndef NGROUPS
	163	#define NGROUPS 32
	164	#endif
	165	{
	166	GIDTYPE gary[NGROUPS];
	167
	168	i = getgroups(NGROUPS,gary);
	169	while (--i >= 0) {
a687059c	170	(void)sprintf(s," %ld", (long)gary[i]);
378cc40b	171	while (*s) s++;
	172	}
	173	}
	174	#endif
a687059c	175	str_set(stab_val(stab),buf);
8d063cd8	176	break;
8d063cd8	177	}
a687059c	178	return stab_val(stab);
8d063cd8	179	}
8d063cd8	180
a687059c	181	stabset(mstr,str)
a687059c	182	register STR *mstr;
8d063cd8	183	STR *str;
8d063cd8	184	{
a687059c	185	STAB *stab = mstr->str_u.str_stab;
8d063cd8	186	char *s;
	187	int i;
	188	int sighandler();
	189
a687059c	190	switch (mstr->str_rare) {
	191	case 'E':
	192	setenv(mstr->str_ptr,str_get(str));
	193	/* And you'll never guess what the dog had */
	194	break; /* in its mouth... */
	195	case 'S':
	196	s = str_get(str);
	197	i = whichsig(mstr->str_ptr); /* ...no, a brick */
	198	if (strEQ(s,"IGNORE"))
	199	#ifndef lint
	200	(void)signal(i,SIG_IGN);
	201	#else
	202	;
	203	#endif
	204	else if (strEQ(s,"DEFAULT") \|\| !*s)
	205	(void)signal(i,SIG_DFL);
	206	else
	207	(void)signal(i,sighandler);
	208	break;
	209	#ifdef SOME_DBM
	210	case 'D':
	211	hdbmstore(stab_hash(stab),mstr->str_ptr,mstr->str_cur,str);
	212	break;
	213	#endif
	214	case '#':
	215	afill(stab_array(stab), (int)str_gnum(str) - arybase);
	216	break;
	217	case 'X': /* merely a copy of a * string */
	218	break;
	219	case '*':
	220	s = str_get(str);
	221	if (strnNE(s,"Stab",4) \|\| str->str_cur != sizeof(STBP)) {
	222	if (!*s) {
	223	STBP *stbp;
	224
	225	(void)savenostab(stab); /* schedule a free of this stab */
	226	if (stab->str_len)
	227	Safefree(stab->str_ptr);
	228	Newz(601,stbp, 1, STBP);
	229	stab->str_ptr = stbp;
	230	stab->str_len = stab->str_cur = sizeof(STBP);
	231	stab->str_pok = 1;
	232	strncpy(stab_magic(stab),"Stab",4);
	233	stab_val(stab) = Str_new(70,0);
	234	stab_line(stab) = line;
	235	}
	236	else
	237	stab = stabent(s,TRUE);
	238	str_sset(str,stab);
	239	}
	240	break;
	241	case 's': {
	242	struct lstring lstr = (struct lstring)str;
	243
	244	mstr->str_rare = 0;
	245	str->str_magic = Nullstr;
	246	str_insert(mstr,lstr->lstr_offset,lstr->lstr_len,
	247	str->str_ptr,str->str_cur);
	248	}
	249	break;
	250
	251	case 'v':
	252	do_vecset(mstr,str);
	253	break;
254
255	case 0:
256	switch (*stab->str_magic->str_ptr) {
8d063cd8	257	case '^':
a687059c	258	Safefree(stab_io(curoutstab)->top_name);
	259	stab_io(curoutstab)->top_name = s = savestr(str_get(str));
	260	stab_io(curoutstab)->top_stab = stabent(s,TRUE);
8d063cd8	261	break;
8d063cd8	262	case '~':
a687059c	263	Safefree(stab_io(curoutstab)->fmt_name);
	264	stab_io(curoutstab)->fmt_name = s = savestr(str_get(str));
	265	stab_io(curoutstab)->fmt_stab = stabent(s,TRUE);
8d063cd8	266	break;
8d063cd8	267	case '=':
a687059c	268	stab_io(curoutstab)->page_len = (long)str_gnum(str);
8d063cd8	269	break;
8d063cd8	270	case '-':
a687059c	271	stab_io(curoutstab)->lines_left = (long)str_gnum(str);
	272	if (stab_io(curoutstab)->lines_left < 0L)
	273	stab_io(curoutstab)->lines_left = 0L;
8d063cd8	274	break;
8d063cd8	275	case '%':
a687059c	276	stab_io(curoutstab)->page = (long)str_gnum(str);
8d063cd8	277	break;
8d063cd8	278	case '\|':
a687059c	279	stab_io(curoutstab)->flags &= ~IOF_FLUSH;
8d063cd8	280	if (str_gnum(str) != 0.0) {
a687059c	281	stab_io(curoutstab)->flags \|= IOF_FLUSH;
8d063cd8	282	}
	283	break;
	284	case '*':
a687059c	285	i = (int)str_gnum(str);
a687059c	286	multiline = (i != 0);
8d063cd8	287	break;
	288	case '/':
	289	record_separator = *str_get(str);
a687059c	290	rslen = str->str_cur;
8d063cd8	291	break;
	292	case '\\':
	293	if (ors)
a687059c	294	Safefree(ors);
8d063cd8	295	ors = savestr(str_get(str));
a687059c	296	orslen = str->str_cur;
8d063cd8	297	break;
	298	case ',':
	299	if (ofs)
a687059c	300	Safefree(ofs);
8d063cd8	301	ofs = savestr(str_get(str));
a687059c	302	ofslen = str->str_cur;
8d063cd8	303	break;
	304	case '#':
	305	if (ofmt)
a687059c	306	Safefree(ofmt);
8d063cd8	307	ofmt = savestr(str_get(str));
	308	break;
	309	case '[':
	310	arybase = (int)str_gnum(str);
	311	break;
378cc40b	312	case '?':
	313	statusvalue = (unsigned short)str_gnum(str);
	314	break;
8d063cd8	315	case '!':
	316	errno = (int)str_gnum(str); /* will anyone ever use this? */
	317	break;
378cc40b	318	case '<':
378cc40b	319	uid = (int)str_gnum(str);
a687059c	320	#ifdef SETREUID
	321	if (delaymagic) {
	322	delaymagic \|= DM_REUID;
	323	break; /* don't do magic till later */
	324	}
	325	#endif /* SETREUID */
	326	#ifdef SETRUID
	327	if (setruid((UIDTYPE)uid) < 0)
	328	uid = (int)getuid();
	329	#else
	330	#ifdef SETREUID
	331	if (setreuid((UIDTYPE)uid, (UIDTYPE)-1) < 0)
378cc40b	332	uid = (int)getuid();
	333	#else
	334	fatal("setruid() not implemented");
	335	#endif
a687059c	336	#endif
378cc40b	337	break;
378cc40b	338	case '>':
378cc40b	339	euid = (int)str_gnum(str);
a687059c	340	#ifdef SETREUID
	341	if (delaymagic) {
	342	delaymagic \|= DM_REUID;
	343	break; /* don't do magic till later */
	344	}
	345	#endif /* SETREUID */
	346	#ifdef SETEUID
	347	if (seteuid((UIDTYPE)euid) < 0)
	348	euid = (int)geteuid();
	349	#else
	350	#ifdef SETREUID
	351	if (setreuid((UIDTYPE)-1, (UIDTYPE)euid) < 0)
378cc40b	352	euid = (int)geteuid();
	353	#else
	354	fatal("seteuid() not implemented");
	355	#endif
a687059c	356	#endif
378cc40b	357	break;
378cc40b	358	case '(':
a687059c	359	gid = (int)str_gnum(str);
	360	#ifdef SETREGID
	361	if (delaymagic) {
	362	delaymagic \|= DM_REGID;
	363	break; /* don't do magic till later */
	364	}
	365	#endif /* SETREGID */
378cc40b	366	#ifdef SETRGID
a687059c	367	(void)setrgid((GIDTYPE)gid);
	368	#else
	369	#ifdef SETREGID
	370	(void)setregid((GIDTYPE)gid, (GIDTYPE)-1);
378cc40b	371	#else
	372	fatal("setrgid() not implemented");
	373	#endif
a687059c	374	#endif
378cc40b	375	break;
378cc40b	376	case ')':
a687059c	377	egid = (int)str_gnum(str);
	378	#ifdef SETREGID
	379	if (delaymagic) {
	380	delaymagic \|= DM_REGID;
	381	break; /* don't do magic till later */
	382	}
	383	#endif /* SETREGID */
378cc40b	384	#ifdef SETEGID
a687059c	385	(void)setegid((GIDTYPE)egid);
	386	#else
	387	#ifdef SETREGID
	388	(void)setregid((GIDTYPE)-1, (GIDTYPE)egid);
378cc40b	389	#else
	390	fatal("setegid() not implemented");
	391	#endif
a687059c	392	#endif
	393	break;
	394	case ':':
	395	chopset = str_get(str);
378cc40b	396	break;
8d063cd8	397	}
a687059c	398	break;
378cc40b	399	}
8d063cd8	400	}
8d063cd8	401
378cc40b	402	whichsig(sig)
378cc40b	403	char *sig;
8d063cd8	404	{
	405	register char **sigv;
	406
	407	for (sigv = sig_name+1; *sigv; sigv++)
378cc40b	408	if (strEQ(sig,*sigv))
8d063cd8	409	return sigv - sig_name;
a687059c	410	#ifdef SIGCLD
	411	if (strEQ(sig,"CHLD"))
	412	return SIGCLD;
	413	#endif
	414	#ifdef SIGCHLD
	415	if (strEQ(sig,"CLD"))
	416	return SIGCHLD;
	417	#endif
8d063cd8	418	return 0;
	419	}
	420
	421	sighandler(sig)
	422	int sig;
	423	{
	424	STAB *stab;
	425	ARRAY *savearray;
	426	STR *str;
378cc40b	427	char *oldfile = filename;
378cc40b	428	int oldsave = savestack->ary_fill;
a687059c	429	ARRAY *oldstack = stack;
378cc40b	430	SUBR *sub;
8d063cd8	431
a687059c	432	stab = stabent(
	433	str_get(hfetch(stab_hash(sigstab),sig_name[sig],strlen(sig_name[sig]),
	434	TRUE)), TRUE);
	435	sub = stab_sub(stab);
	436	if (!sub && *sig_name[sig] == 'C' && instr(sig_name[sig],"LD")) {
	437	if (sig_name[sig][1] == 'H')
	438	stab = stabent(str_get(hfetch(stab_hash(sigstab),"CLD",3,TRUE)),
	439	TRUE);
	440	else
	441	stab = stabent(str_get(hfetch(stab_hash(sigstab),"CHLD",4,TRUE)),
	442	TRUE);
	443	sub = stab_sub(stab); /* gag */
	444	}
378cc40b	445	if (!sub) {
	446	if (dowarn)
	447	warn("SIG%s handler \"%s\" not defined.\n",
a687059c	448	sig_name[sig], stab_name(stab) );
378cc40b	449	return;
378cc40b	450	}
a687059c	451	savearray = stab_xarray(defstab);
	452	stab_xarray(defstab) = stack = anew(defstab);
	453	stack->ary_flags = 0;
	454	str = Str_new(71,0);
8d063cd8	455	str_set(str,sig_name[sig]);
a687059c	456	(void)apush(stab_xarray(defstab),str);
378cc40b	457	sub->depth++;
	458	if (sub->depth >= 2) { /* save temporaries on recursion? */
	459	if (sub->depth == 100 && dowarn)
a687059c	460	warn("Deep recursion on subroutine \"%s\"",stab_name(stab));
378cc40b	461	savelist(sub->tosave->ary_array,sub->tosave->ary_fill);
	462	}
	463	filename = sub->filename;
	464
a687059c	465	(void)cmd_exec(sub->cmd,G_SCALAR,1); /* so do it already */
378cc40b	466
378cc40b	467	sub->depth--; /* assuming no longjumps out of here */
a687059c	468	str_free(stack->ary_array[0]); /* free the one real string */
	469	afree(stab_xarray(defstab)); /* put back old $_[] */
	470	stab_xarray(defstab) = savearray;
	471	stack = oldstack;
378cc40b	472	filename = oldfile;
	473	if (savestack->ary_fill > oldsave)
	474	restorelist(oldsave);
8d063cd8	475	}
8d063cd8	476
8d063cd8	477	STAB *
	478	aadd(stab)
	479	register STAB *stab;
	480	{
a687059c	481	if (!stab_xarray(stab))
a687059c	482	stab_xarray(stab) = anew(stab);
8d063cd8	483	return stab;
	484	}
	485
	486	STAB *
	487	hadd(stab)
	488	register STAB *stab;
	489	{
a687059c	490	if (!stab_xhash(stab))
a687059c	491	stab_xhash(stab) = hnew(COEFFSIZE);
8d063cd8	492	return stab;
8d063cd8	493	}
378cc40b	494
	495	STAB *
	496	stabent(name,add)
	497	register char *name;
	498	int add;
	499	{
	500	register STAB *stab;
a687059c	501	register STBP *stbp;
	502	int len;
	503	register char *namend;
	504	HASH *stash;
	505	char *sawquote = Nullch;
	506	char *prevquote = Nullch;
	507	bool global = FALSE;
378cc40b	508
a687059c	509	if (isascii(name) && isupper(name)) {
	510	if (*name > 'I') {
	511	if (*name == 'S' && (
	512	strEQ(name, "SIG") \|\|
	513	strEQ(name, "STDIN") \|\|
	514	strEQ(name, "STDOUT") \|\|
	515	strEQ(name, "STDERR") ))
	516	global = TRUE;
378cc40b	517	}
a687059c	518	else if (*name > 'E') {
	519	if (*name == 'I' && strEQ(name, "INC"))
	520	global = TRUE;
	521	}
	522	else if (*name >= 'A') {
	523	if (*name == 'E' && strEQ(name, "ENV"))
	524	global = TRUE;
	525	}
	526	else if (*name == 'A' && (
	527	strEQ(name, "ARGV") \|\|
	528	strEQ(name, "ARGVOUT") ))
	529	global = TRUE;
	530	}
	531	for (namend = name; *namend; namend++) {
	532	if (*namend == '\'' && namend[1])
	533	prevquote = sawquote, sawquote = namend;
	534	}
	535	if (sawquote == name && name[1]) {
	536	stash = defstash;
	537	sawquote = Nullch;
	538	name++;
	539	}
	540	else if (!isalpha(*name) \|\| global)
	541	stash = defstash;
	542	else
	543	stash = curstash;
	544	if (sawquote) {
	545	char tmpbuf[256];
	546	char s, d;
	547
	548	*sawquote = '\0';
	549	if (s = prevquote) {
	550	strncpy(tmpbuf,name,s-name+1);
	551	d = tmpbuf+(s-name+1);
	552	*d++ = '_';
	553	strcpy(d,s+1);
	554	}
	555	else {
	556	*tmpbuf = '_';
	557	strcpy(tmpbuf+1,name);
	558	}
	559	stab = stabent(tmpbuf,TRUE);
	560	if (!(stash = stab_xhash(stab)))
	561	stash = stab_xhash(stab) = hnew(0);
	562	name = sawquote+1;
	563	*sawquote = '\'';
378cc40b	564	}
a687059c	565	len = namend - name;
	566	stab = (STAB*)hfetch(stash,name,len,add);
	567	if (!stab)
	568	return Nullstab;
	569	if (stab->str_pok) {
	570	stab->str_pok \|= SP_MULTI;
	571	return stab;
	572	}
	573	else {
	574	if (stab->str_len)
	575	Safefree(stab->str_ptr);
	576	Newz(602,stbp, 1, STBP);
	577	stab->str_ptr = stbp;
	578	stab->str_len = stab->str_cur = sizeof(STBP);
	579	stab->str_pok = 1;
	580	strncpy(stab_magic(stab),"Stab",4);
	581	stab_val(stab) = Str_new(72,0);
	582	stab_line(stab) = line;
	583	str_magic(stab,stab,'*',name,len);
378cc40b	584	return stab;
378cc40b	585	}
378cc40b	586	}
	587
	588	STIO *
	589	stio_new()
	590	{
a687059c	591	STIO *stio;
378cc40b	592
a687059c	593	Newz(603,stio,1,STIO);
378cc40b	594	stio->page_len = 60;
	595	return stio;
	596	}
	597
	598	stab_check(min,max)
	599	int min;
	600	register int max;
	601	{
a687059c	602	register HENT *entry;
378cc40b	603	register int i;
	604	register STAB *stab;
	605
	606	for (i = min; i <= max; i++) {
a687059c	607	for (entry = defstash->tbl_array[i]; entry; entry = entry->hent_next) {
	608	stab = (STAB*)entry->hent_val;
	609	if (stab->str_pok & SP_MULTI)
378cc40b	610	continue;
a687059c	611	line = stab_line(stab);
a687059c	612	warn("Possible typo: \"%s\"", stab_name(stab));
378cc40b	613	}
	614	}
	615	}
a687059c	616
	617	static int gensym = 0;
	618
	619	STAB *
	620	genstab()
	621	{
	622	(void)sprintf(tokenbuf,"_GEN_%d",gensym++);
	623	return stabent(tokenbuf,TRUE);
	624	}
	625
	626	/* hopefully this is only called on local symbol table entries */
	627
	628	void
	629	stab_clear(stab)
	630	register STAB *stab;
	631	{
	632	STIO *stio;
	633	SUBR *sub;
	634
	635	afree(stab_xarray(stab));
	636	(void)hfree(stab_xhash(stab));
	637	str_free(stab_val(stab));
	638	if (stio = stab_io(stab)) {
	639	do_close(stab,FALSE);
	640	Safefree(stio->top_name);
	641	Safefree(stio->fmt_name);
	642	}
	643	if (sub = stab_sub(stab)) {
	644	afree(sub->tosave);
	645	cmd_free(sub->cmd);
	646	}
	647	Safefree(stab->str_ptr);
	648	stab->str_ptr = Null(STBP*);
	649	stab->str_len = 0;
	650	stab->str_cur = 0;
	651	}
	652