path: root/usr.bin/mg/extend.c

/*
 *	Extended (M-X) commands, rebinding, and 
 *	startup file processing.
 */
#include	"def.h"
#include	"kbd.h"

#ifndef NO_MACRO
#include	"macro.h"
#endif

#ifdef	FKEYS
#include	"key.h"
#ifndef	NO_STARTUP
#ifndef	BINDKEY
#define	BINDKEY		/* bindkey is used by FKEYS startup code */
#endif
#endif
#endif

extern	int rescan();

/* insert a string, mainly for use from macros (created by selfinsert) */
/*ARGSUSED*/
insert(f, n)
int f, n;
{
    register char *cp;
    char buf[128];
#ifndef NO_MACRO
    register int count;
    int c;

    if(inmacro) {
	while(--n >= 0) {
	    for(count = 0; count < maclcur->l_used; count++) {
		if((((c=maclcur->l_text[count]) == '\n') ? lnewline()
		    : linsert(1, c)) != TRUE) return FALSE;
	    }
	}
	maclcur = maclcur->l_fp;
	return TRUE;
    }
    if(n==1) thisflag |= CFINS; /* CFINS means selfinsert can tack on end */
#endif
    if(eread("Insert: ", buf, sizeof(buf), EFNEW) == FALSE) return FALSE;
    while(--n >= 0) {
	cp = buf;
	while(*cp) {
	    if(((*cp == '\n') ? lnewline() : linsert(1, *cp)) != TRUE)
		return FALSE;
	    cp++;
	}
    }
    return TRUE;
}

/*
 * Bind a key to a function.  Cases range from the trivial (replacing an
 * existing binding) to the extremly complex (creating a new prefix in a
 * map_element that already has one, so the map_element must be split,
 * but the keymap doesn't have enough room for another map_element, so
 * the keymap is reallocated).	No attempt is made to reclaim space no
 * longer used, if this is a problem flags must be added to indicate
 * malloced verses static storage in both keymaps and map_elements.
 * Structure assignments would come in real handy, but K&R based compilers
 * don't have them.  Care is taken so running out of memory will leave
 * the keymap in a usable state.
 */
static int remap(curmap, c, funct, pref_map)
register KEYMAP	*curmap;/* pointer to the map being changed */
int	c;		/* character being changed */
PF	funct;		/* function being changed to */
KEYMAP	*pref_map;	/* if funct==prefix, map to bind to or NULL for new */
/* extern MAP_ELEMENT *ele;	must be set before calling */
{
	register int i;
	int	n1, n2, nold;
	KEYMAP	*mp;
	PF	*pfp;
	MAP_ELEMENT *mep;
	static	KEYMAP *realocmap();

	if(ele >= &curmap->map_element[curmap->map_num] || c < ele->k_base) {
	    if(ele > &curmap->map_element[0] && (funct!=prefix ||
			(ele-1)->k_prefmap==NULL)) {
		n1 = c - (ele-1)->k_num;
	    } else n1 = HUGE;
	    if(ele < &curmap->map_element[curmap->map_num] && (funct!=prefix ||
			ele->k_prefmap==NULL)) {
		n2 = ele->k_base - c;
	    } else n2 = HUGE;
	    if(n1 <= MAPELEDEF && n1 <= n2) {
		ele--;
		if((pfp = (PF *)malloc((unsigned)(c - ele->k_base+1) 
			* sizeof(PF))) == NULL) {
		    ewprintf("Out of memory");
		    return FALSE;
		}
		nold = ele->k_num - ele->k_base + 1;
		for(i=0; i < nold; i++)
		    pfp[i] = ele->k_funcp[i];
		while(--n1) pfp[i++] = curmap->map_default;
		pfp[i] = funct;
		ele->k_num = c;
		ele->k_funcp = pfp;
	    } else if(n2 <= MAPELEDEF) {
		if((pfp = (PF *)malloc((unsigned)(ele->k_num - c + 1) 
			* sizeof(PF))) == NULL) {
		    ewprintf("Out of memory");
		    return FALSE;
		}
		nold = ele->k_num - ele->k_base + 1;
		for(i=0; i < nold; i++)
		    pfp[i+n2] = ele->k_funcp[i];
		while(--n2) pfp[n2] = curmap->map_default;
		pfp[0] = funct;
		ele->k_base = c;
		ele->k_funcp = pfp;
	    } else {
		if(curmap->map_num >= curmap->map_max &&
		    (curmap = realocmap(curmap)) == NULL) return FALSE;
		if((pfp = (PF *)malloc(sizeof(PF))) == NULL) {
		    ewprintf("Out of memory");
		    return FALSE;
		}
		pfp[0] = funct;
		for(mep = &curmap->map_element[curmap->map_num]; mep > ele; mep--) {
		    mep->k_base    = (mep-1)->k_base;
		    mep->k_num     = (mep-1)->k_num;
		    mep->k_funcp   = (mep-1)->k_funcp;
		    mep->k_prefmap = (mep-1)->k_prefmap;
		}
		ele->k_base = c;
		ele->k_num = c;
		ele->k_funcp = pfp;
		ele->k_prefmap = NULL;
		curmap->map_num++;
	    }
	    if(funct == prefix) {
		if(pref_map != NULL) {
		    ele->k_prefmap = pref_map;
		} else {
		    if((mp = (KEYMAP *)malloc(sizeof(KEYMAP) +
			    (MAPINIT-1)*sizeof(MAP_ELEMENT))) == NULL) {
			ewprintf("Out of memory");
			ele->k_funcp[c - ele->k_base] = curmap->map_default;
			return FALSE;
		    }
		    mp->map_num = 0;
		    mp->map_max = MAPINIT;
		    mp->map_default = rescan;
		    ele->k_prefmap = mp;
		}
	    }
	} else {
	    n1 = c - ele->k_base;
	    if(ele->k_funcp[n1] == funct && (funct!=prefix || pref_map==NULL ||
		    pref_map==ele->k_prefmap))
		return TRUE;	/* no change */
	    if(funct!=prefix || ele->k_prefmap==NULL) {
		if(ele->k_funcp[n1] == prefix)
		    ele->k_prefmap = (KEYMAP *)NULL;
		ele->k_funcp[n1] = funct;	/* easy case */
		if(funct==prefix) {
		    if(pref_map!=NULL)
			ele->k_prefmap = pref_map;
		    else {
			if((mp = (KEYMAP *)malloc(sizeof(KEYMAP) +
				(MAPINIT-1)*sizeof(MAP_ELEMENT))) == NULL) {
			    ewprintf("Out of memory");
			    ele->k_funcp[c - ele->k_base] = curmap->map_default;
			    return FALSE;
			}
			mp->map_num = 0;
			mp->map_max = MAPINIT;
			mp->map_default = rescan;
			ele->k_prefmap = mp;
		    }
		}
	    } else {
		/* this case is the splits */
		/* determine which side of the break c goes on */
		/* 0 = after break; 1 = before break */
		n2 = 1;
		for(i=0; n2 && i < n1; i++)
			n2 &= ele->k_funcp[i] != prefix;
		if(curmap->map_num >= curmap->map_max &&
		    (curmap = realocmap(curmap)) == NULL) return FALSE;
		if((pfp = (PF *)malloc((unsigned)(ele->k_num - c + !n2) 
			* sizeof(PF))) == NULL) {
		    ewprintf("Out of memory");
		    return FALSE;
		}
		ele->k_funcp[n1] = prefix;
		for(i=n1+n2; i <= ele->k_num - ele->k_base; i++)
		    pfp[i-n1-n2] = ele->k_funcp[i];
		for(mep = &curmap->map_element[curmap->map_num]; mep > ele; mep--) {
		    mep->k_base    = (mep-1)->k_base;
		    mep->k_num     = (mep-1)->k_num;
		    mep->k_funcp   = (mep-1)->k_funcp;
		    mep->k_prefmap = (mep-1)->k_prefmap;
		}
		ele->k_num = c - !n2;
		(ele+1)->k_base = c + n2;
		(ele+1)->k_funcp = pfp;
		ele += !n2;
		ele->k_prefmap = NULL;
		curmap->map_num++;
		if(pref_map == NULL) {
		    if((mp = (KEYMAP *)malloc(sizeof(KEYMAP) +
			    (MAPINIT-1)*sizeof(MAP_ELEMENT))) == NULL) {
			ewprintf("Out of memory");
			ele->k_funcp[c - ele->k_base] = curmap->map_default;
			return FALSE;
		    }
		    mp->map_num = 0;
		    mp->map_max = MAPINIT;
		    mp->map_default = rescan;
		    ele->k_prefmap = mp;
		} else ele->k_prefmap = pref_map;
	    }
	}
	return TRUE;
}

/* reallocate a keymap, used above */
static KEYMAP *realocmap(curmap)
register KEYMAP *curmap;
{
    register KEYMAP *mp;
    register int i;
    static VOID fixmap();
    extern int nmaps;

    if((mp = (KEYMAP *)malloc((unsigned)(sizeof(KEYMAP)+
	    (curmap->map_max+(MAPGROW-1))*sizeof(MAP_ELEMENT)))) == NULL) {
	ewprintf("Out of memory");
	return NULL;
    }
    mp->map_num = curmap->map_num;
    mp->map_max = curmap->map_max + MAPGROW;
    mp->map_default = curmap->map_default;
    for(i=curmap->map_num; i--; ) {
	mp->map_element[i].k_base	= curmap->map_element[i].k_base;
	mp->map_element[i].k_num	= curmap->map_element[i].k_num;
	mp->map_element[i].k_funcp	= curmap->map_element[i].k_funcp;
	mp->map_element[i].k_prefmap	= curmap->map_element[i].k_prefmap;
    }
    for(i=nmaps; i--; ) {
	if(map_table[i].p_map == curmap) map_table[i].p_map = mp;
	else fixmap(curmap, mp, map_table[i].p_map);
    }
    ele = &mp->map_element[ele - &curmap->map_element[0]];
    return mp;
}

/* fix references to a reallocated keymap (recursive) */
static VOID fixmap(curmap, mp, mt)
register KEYMAP *mt;
register KEYMAP *curmap;
KEYMAP *mp;
{
    register int i;

    for(i = mt->map_num; i--; ) {
	if(mt->map_element[i].k_prefmap != NULL) {
	    if(mt->map_element[i].k_prefmap == curmap)
	    	mt->map_element[i].k_prefmap = mp;
	    else fixmap(curmap, mp, mt->map_element[i].k_prefmap);
	}
    }
}

/*
 * do the input for local-set-key, global-set-key  and define-key
 * then call remap to do the work.
 */

static int dobind(curmap, p, unbind)
register KEYMAP *curmap;
char *p;
int unbind;
{
	PF	funct;
	char	prompt[80];
	char	*pep;
	int	c;
	int	s;
	KEYMAP	*pref_map = NULL;

#ifndef NO_MACRO
	if(macrodef) {
	/* keystrokes arn't collected.	Not hard, but pretty useless */
	/* would not work for function keys in any case */
	    ewprintf("Can't rebind key in macro");
	    return FALSE;
	}
#ifndef NO_STARTUP
	if(inmacro) {
	    for(s=0; s < maclcur->l_used - 1; s++) {
		if(doscan(curmap, c=CHARMASK(maclcur->l_text[s])) != prefix) {
		    if(remap(curmap, c, prefix, (KEYMAP *)NULL) != TRUE) {
			return FALSE;
		    }
		}
		curmap = ele->k_prefmap;
	    }
	    (VOID) doscan(curmap, c=maclcur->l_text[s]);
	    maclcur = maclcur->l_fp;
	} else {
#endif
#endif
	    (VOID) strcpy(prompt, p);
	    pep = prompt + strlen(prompt);
	    for(;;) {
		ewprintf("%s", prompt);
		pep[-1] = ' ';
		pep = keyname(pep, c = getkey(FALSE));
		if(doscan(curmap,c) != prefix) break;
		*pep++ = '-';
		*pep = '\0';
		curmap = ele->k_prefmap;
	    }
#ifndef NO_STARTUP
	}
#endif
	if(unbind) funct = rescan;
	else {
	    if ((s=eread("%s to command: ", prompt, 80, EFFUNC|EFNEW, prompt))
			!= TRUE) return s;
	    if (((funct = name_function(prompt)) == prefix) ?
	    		(pref_map = name_map(prompt)) == NULL : funct==NULL) {
		ewprintf("[No match]");
		return FALSE;
	    }
	}
	return remap(curmap, c, funct, pref_map);
}

/*
 * bindkey: bind key sequence to a function in
 * the specified map.  Used by excline so it can bind function keys.
 * To close to release to change calling sequence, should just pass
 * KEYMAP *curmap rather than KEYMAP **mapp.
*/
#ifdef	BINDKEY
bindkey(mapp, fname, keys, kcount)
KEYMAP **mapp;
char *fname;
KCHAR *keys;
int kcount;
{
	KEYMAP	*curmap = *mapp;
	PF	funct;
	int	c;
	KEYMAP	*pref_map = NULL;

	if(fname == NULL) funct = rescan;
	else if (((funct = name_function(fname)) == prefix) ?
		(pref_map = name_map(fname)) == NULL : funct==NULL) {
	    ewprintf("[No match: %s]", fname);
	    return FALSE;
	}
	while(--kcount) {
	    if(doscan(curmap, c = *keys++) != prefix) {
		if(remap(curmap, c, prefix, (KEYMAP *)NULL) != TRUE)
		    return FALSE;
	    }
	    curmap = ele->k_prefmap;
	}
	(VOID) doscan(curmap, c = *keys);
	return remap(curmap, c, funct, pref_map);
}
#endif

/*
 * This function modifies the fundamental keyboard map.
 */
/*ARGSUSED*/
bindtokey(f, n)
{
    return dobind(map_table[0].p_map, "Global set key: ", FALSE);
}

/*
 * This function modifies the current mode's keyboard map.
 */
/*ARGSUSED*/
localbind(f, n)
{
    return dobind(curbp->b_modes[curbp->b_nmodes]->p_map, "Local set key: ",
	FALSE);
}

/*
 * This function redefines a key in any keymap.
 */
/*ARGSUSED*/
define_key(f, n)
{
    static char buf[48] = "Define key map: ";
    MAPS *mp;
    char *strncat();

    buf[16] = '\0';
    if(eread(buf, &buf[16], 48 - 16, EFNEW) != TRUE) return FALSE;
    if((mp = name_mode(&buf[16])) == NULL) {
	ewprintf("Unknown map %s", &buf[16]);
	return FALSE;
    }
    (VOID) strncat(&buf[16], " key: ", 48-16-1);
    return dobind(mp->p_map, buf, FALSE);
}

unbindtokey(f, n)
int f, n;
{
    return dobind(map_table[0].p_map, "Global unset key: ", TRUE);
}

localunbind(f, n)
int f, n;
{
    return dobind(curbp->b_modes[curbp->b_nmodes]->p_map, "Local unset key: ",
	TRUE);
}

/*
 * Extended command. Call the message line
 * routine to read in the command name and apply autocompletion
 * to it. When it comes back, look the name up in the symbol table
 * and run the command if it is found.
 * Print an error if there is anything wrong.
 */
extend(f, n)
{
	PF	funct;
	int	s;
	char	xname[NXNAME];

	if(!(f & FFARG)) s = eread("M-x ", xname, NXNAME, EFNEW|EFFUNC);
	else		 s = eread("%d M-x ", xname, NXNAME, EFNEW|EFFUNC, n);
	if(s != TRUE) return s;
	if((funct = name_function(xname)) != NULL) {
#ifndef NO_MACRO
	    if(macrodef) {
		LINE *lp = maclcur;
		macro[macrocount-1].m_funct = funct;
		maclcur = lp->l_bp;
		maclcur->l_fp = lp->l_fp;
		free((char *)lp);
	    }
#endif
	    return (*funct)(f, n);
	}
	ewprintf("[No match]");
	return FALSE;
}

#ifndef NO_STARTUP
/*
 * Define the commands needed to do startup-file processing.
 * This code is mostly a kludge just so we can get startup-file processing.
 *
 * If you're serious about having this code, you should rewrite it.
 * To wit:
 *	It has lots of funny things in it to make the startup-file look
 *	like a GNU startup file; mostly dealing with parens and semicolons.
 *	This should all vanish.
 *
 * We define eval-expression because it's easy.	 It can make
 * *-set-key or define-key set an arbitrary key sequence, so it isn't
 * useless.
 */

/*
 * evalexpr - get one line from the user, and run it.
 */
/*ARGSUSED*/
evalexpr(f, n)
{
	int	s;
	char	exbuf[128];

	if ((s = ereply("Eval: ", exbuf, 128)) != TRUE)
		return s;
	return excline(exbuf);
}
/*
 * evalbuffer - evaluate the current buffer as line commands. Useful
 *	for testing startup files.
 */
/*ARGSUSED*/
evalbuffer(f, n)
{
	register LINE	*lp;
	register BUFFER *bp = curbp;
	register int	s;
	static char	excbuf[128];

	for (lp = lforw(bp->b_linep); lp != bp->b_linep; lp = lforw(lp)) {
		if (llength(lp) >= 128) return FALSE;
		(VOID) strncpy(excbuf, ltext(lp), llength(lp));
		excbuf[llength(lp)] = '\0';	/* make sure it's terminated */
		if ((s = excline(excbuf)) != TRUE) return s;
	}
	return TRUE;
}
/*
 * evalfile - go get a file and evaluate it as line commands. You can
 *	go get your own startup file if need be.
 */
/*ARGSUSED*/
evalfile(f, n)
{
	register int	s;
	char		fname[NFILEN];

	if ((s = ereply("Load file: ", fname, NFILEN)) != TRUE)
		return s;
	return load(fname);
}

/*
 * load - go load the file name we got passed.
 */
load(fname) char *fname; {
	int	s = TRUE;
	int	nbytes;
	char	excbuf[128];

	if ((fname = adjustname(fname)) == NULL)
		return FALSE;	/* just to be careful */

	if (ffropen(fname, (BUFFER *) NULL) != FIOSUC) return FALSE;
	while ((s = ffgetline(excbuf, sizeof(excbuf)-1, &nbytes)) == FIOSUC) {
		excbuf[nbytes] = '\0';
		if (excline(excbuf) != TRUE) {
			s = FIOERR;
			ewprintf("Error loading file %s", fname);
			break;
		}
	}
	(VOID) ffclose((BUFFER *) NULL);
	excbuf[nbytes] = '\0';
	if(s!=FIOEOF || (nbytes && excline(excbuf)!=TRUE))
		return FALSE;
	return TRUE;
}

/*
 * excline - run a line from a load file or eval-expression.
 * if FKEYS is defined, duplicate functionallity of dobind so function
 * key values don't have to fit in type char.
 */
excline(line)
register char *line;
{
	register char	*funcp, *argp = NULL;
	register int	c;
	int		status;
	int	f, n;
	LINE	*lp, *np;
	PF	fp;
#ifdef	FKEYS
	int	bind;
	KEYMAP	*curmap;
	MAPS	*mp;
#define BINDARG		0	/* this arg is key to bind (local/global set key) */
#define	BINDNO		1	/* not binding or non-quoted BINDARG */
#define BINDNEXT	2	/* next arg " (define-key) */
#define BINDDO		3	/* already found key to bind */
#define BINDEXT 1		/* space for trailing \0 */
#else
#define BINDEXT 0
#endif
	PF	name_function();
	LINE	*lalloc();
	static	char	*skipwhite(), *parsetoken();

	if(macrodef || inmacro) {
		ewprintf("Not now!");
		return FALSE;
	}

	f = 0;
	n = 1;
	funcp = skipwhite(line);
	if (*funcp == '\0') return TRUE;	/* No error on blank lines */
	line = parsetoken(funcp);
	if (*line != '\0') {
		*line++ = '\0';
		line = skipwhite(line);
		if ((*line >= '0' && *line <= '9') || *line == '-') {
			argp = line;
			line = parsetoken(line);
		}
	}

	if (argp != NULL) {
		f = FFARG;
		n = atoi(argp);
	}
	if((fp = name_function(funcp)) == NULL) {
	    ewprintf("Unknown function: %s", funcp);
	    return FALSE;
	}
#ifdef	FKEYS
	if(fp == bindtokey || fp == unbindtokey) {
		bind = BINDARG;
		curmap = map_table[0].p_map;
	} else if(fp == localbind || fp == localunbind) {
		bind = BINDARG;
		curmap = curbp->b_modes[curbp->b_nmodes]->p_map;
	} else if(fp == define_key) bind = BINDNEXT;
	else bind = BINDNO;
#endif
	/* Pack away all the args now...	*/
	if((np = lalloc(0))==FALSE) return FALSE;
	np->l_fp = np->l_bp = maclcur = np;
	while (*line != '\0') {
		argp = skipwhite(line);
		if (*argp == '\0') break;
		line = parsetoken(argp);
		if (*argp != '"') {
		    if (*argp == '\'') ++argp;
		    if((lp = lalloc((int)(line-argp)+BINDEXT))==NULL) {
			status = FALSE;
			goto cleanup;
		    }
		    bcopy(argp, ltext(lp), (int)(line-argp));
#ifdef	FKEYS
		    lp->l_used--;	/* don't count BINDEXT! */
		    if(bind == BINDARG) bind = BINDNO;
#endif
		} else {	/* Quoted strings special */
		    ++argp;
#ifdef	FKEYS
		    if(bind != BINDARG) {
#endif
			if((lp = lalloc((int)(line-argp)+BINDEXT))==NULL) {
			    status = FALSE;
			    goto cleanup;
			}
			lp->l_used = 0;
#ifdef	FKEYS
		    } else {
			key.k_count = 0;
		    }
#endif
		    while (*argp != '"' && *argp != '\0') {
			if (*argp != '\\') c = *argp++;
			else {
			    switch(*++argp) {
				case 't': case 'T':
				    c = CCHR('I');
				    break;
				case 'n': case 'N':
				    c = CCHR('J');
				    break;
				case 'r': case 'R':
				    c = CCHR('M');
				    break;
				case 'e': case 'E':
				    c = CCHR('[');
				    break;
				case '^':
/* split into two statements due to bug in OSK cpp */
				    c = CHARMASK(*++argp);
				    c = ISLOWER(c) ?
					CCHR(TOUPPER(c)) : CCHR(c);
				    break;
				case '0': case '1': case '2': case '3':
				case '4': case '5': case '6': case '7':
				    c = *argp - '0';
				    if(argp[1] <= '7' && argp[1] >= '0') {
				    	c <<= 3;
					c += *++argp - '0';
					if(argp[1] <= '7' && argp[1] >= '0') {
					    c <<= 3;
					    c += *++argp - '0';
					}
				    }
				    break;
#ifdef	FKEYS
				case 'f': case 'F':
				    c = *++argp - '0';
				    if(ISDIGIT(argp[1])) {
					c *= 10;
					c += *++argp - '0';
				    }
				    c += KFIRST;
				    break;
#endif
				default:
				    c = CHARMASK(*argp);
				    break;
			    }
			    argp++;
			}
#ifdef	FKEYS
			if(bind == BINDARG)
			    key.k_chars[key.k_count++] = c;
			else
#endif
			    lp->l_text[lp->l_used++] = c;
		    }
		    if(*line) line++;
		}
#ifdef	FKEYS
		switch(bind) {
		    case BINDARG:
			bind = BINDDO;
			break;
		    case BINDNEXT:
			lp->l_text[lp->l_used] = '\0';
			if((mp = name_mode(lp->l_text)) == NULL) {
			    ewprintf("No such mode: %s", lp->l_text);
			    status = FALSE;
			    free((char *)lp);
			    goto cleanup;
			}
			curmap = mp->p_map;
			free((char *)lp);
			bind = BINDARG;
			break;
		    default:
#endif
			lp->l_fp = np->l_fp;
			lp->l_bp = np;
			np->l_fp = lp;
			np = lp;
#ifdef	FKEYS
		}
#endif
	}
#ifdef	FKEYS
	switch(bind) {
	    default:
		ewprintf("Bad args to set key");
		status = FALSE;
		break;
	    case BINDDO:
	    	if(fp != unbindtokey && fp != localunbind) {
		    lp->l_text[lp->l_used] = '\0';
		    status = bindkey(&curmap, lp->l_text, key.k_chars, key.k_count);
		} else status = bindkey(&curmap, (char *)NULL, key.k_chars, key.k_count);
		break;
	    case BINDNO:
#endif
		inmacro = TRUE;
		maclcur = maclcur->l_fp;
		status = (*fp)(f, n);
		inmacro = FALSE;
#ifdef	FKEYS
	}
#endif
cleanup:
	lp = maclcur->l_fp;
	while(lp!=maclcur) {
	    np = lp->l_fp;
	    free((char *)lp);
	    lp = np;
	}
	free((char *)lp);
	return status;
}

/*
 * a pair of utility functions for the above
 */
static char *
skipwhite(s)
register char *s;
{
	while(*s == ' ' || *s == '\t' || *s == ')' || *s == '(') s++;
	if (*s == ';') *s = '\0' ;
	return s;
}

static char *
parsetoken(s)
register char *s;
{
	if (*s != '"') {
	    while(*s && *s!=' ' && *s!='\t' && *s!=')' && *s!='(') s++;
	    if(*s==';') *s='\0';
	} else
	    do {	/* Strings get special treatment */
			/* Beware: You can \ out the end of the string! */
		if (*s == '\\') ++s;
	    } while (*++s != '"' && *s != '\0');
	return s;
}
#endif