[p5sagit/p5-mst-13.2.git] / x2p / str.c

/* $Header: str.c,v 4.0 91/03/20 01:58:15 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:	str.c,v $
 * Revision 4.0  91/03/20  01:58:15  lwall
 * 4.0 baseline.
 * 
 */

#include "handy.h"
#include "EXTERN.h"
#include "util.h"
#include "a2p.h"

str_numset(str,num)
register STR *str;
double num;
{
    str->str_nval = num;
    str->str_pok = 0;		/* invalidate pointer */
    str->str_nok = 1;		/* validate number */
}

char *
str_2ptr(str)
register STR *str;
{
    register char *s;

    if (!str)
	return "";
    GROWSTR(&(str->str_ptr), &(str->str_len), 24);
    s = str->str_ptr;
    if (str->str_nok) {
	sprintf(s,"%.20g",str->str_nval);
	while (*s) s++;
    }
    *s = '\0';
    str->str_cur = s - str->str_ptr;
    str->str_pok = 1;
#ifdef DEBUGGING
    if (debug & 32)
	fprintf(stderr,"0x%lx ptr(%s)\n",str,str->str_ptr);
#endif
    return str->str_ptr;
}

double
str_2num(str)
register STR *str;
{
    if (!str)
	return 0.0;
    if (str->str_len && str->str_pok)
	str->str_nval = atof(str->str_ptr);
    else
	str->str_nval = 0.0;
    str->str_nok = 1;
#ifdef DEBUGGING
    if (debug & 32)
	fprintf(stderr,"0x%lx num(%g)\n",str,str->str_nval);
#endif
    return str->str_nval;
}

str_sset(dstr,sstr)
STR *dstr;
register STR *sstr;
{
    if (!sstr)
	str_nset(dstr,No,0);
    else if (sstr->str_nok)
	str_numset(dstr,sstr->str_nval);
    else if (sstr->str_pok)
	str_nset(dstr,sstr->str_ptr,sstr->str_cur);
    else
	str_nset(dstr,"",0);
}

str_nset(str,ptr,len)
register STR *str;
register char *ptr;
register int len;
{
    GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
    bcopy(ptr,str->str_ptr,len);
    str->str_cur = len;
    *(str->str_ptr+str->str_cur) = '\0';
    str->str_nok = 0;		/* invalidate number */
    str->str_pok = 1;		/* validate pointer */
}

str_set(str,ptr)
register STR *str;
register char *ptr;
{
    register int len;

    if (!ptr)
	ptr = "";
    len = strlen(ptr);
    GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
    bcopy(ptr,str->str_ptr,len+1);
    str->str_cur = len;
    str->str_nok = 0;		/* invalidate number */
    str->str_pok = 1;		/* validate pointer */
}

str_chop(str,ptr)	/* like set but assuming ptr is in str */
register STR *str;
register char *ptr;
{
    if (!(str->str_pok))
	str_2ptr(str);
    str->str_cur -= (ptr - str->str_ptr);
    bcopy(ptr,str->str_ptr, str->str_cur + 1);
    str->str_nok = 0;		/* invalidate number */
    str->str_pok = 1;		/* validate pointer */
}

str_ncat(str,ptr,len)
register STR *str;
register char *ptr;
register int len;
{
    if (!(str->str_pok))
	str_2ptr(str);
    GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
    bcopy(ptr,str->str_ptr+str->str_cur,len);
    str->str_cur += len;
    *(str->str_ptr+str->str_cur) = '\0';
    str->str_nok = 0;		/* invalidate number */
    str->str_pok = 1;		/* validate pointer */
}

str_scat(dstr,sstr)
STR *dstr;
register STR *sstr;
{
    if (!(sstr->str_pok))
	str_2ptr(sstr);
    if (sstr)
	str_ncat(dstr,sstr->str_ptr,sstr->str_cur);
}

str_cat(str,ptr)
register STR *str;
register char *ptr;
{
    register int len;

    if (!ptr)
	return;
    if (!(str->str_pok))
	str_2ptr(str);
    len = strlen(ptr);
    GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
    bcopy(ptr,str->str_ptr+str->str_cur,len+1);
    str->str_cur += len;
    str->str_nok = 0;		/* invalidate number */
    str->str_pok = 1;		/* validate pointer */
}

char *
str_append_till(str,from,delim,keeplist)
register STR *str;
register char *from;
register int delim;
char *keeplist;
{
    register char *to;
    register int len;

    if (!from)
	return Nullch;
    len = strlen(from);
    GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
    str->str_nok = 0;		/* invalidate number */
    str->str_pok = 1;		/* validate pointer */
    to = str->str_ptr+str->str_cur;
    for (; *from; from++,to++) {
	if (*from == '\\' && from[1] && delim != '\\') {
	    if (!keeplist) {
		if (from[1] == delim || from[1] == '\\')
		    from++;
		else
		    *to++ = *from++;
	    }
	    else if (index(keeplist,from[1]))
		*to++ = *from++;
	    else
		from++;
	}
	else if (*from == delim)
	    break;
	*to = *from;
    }
    *to = '\0';
    str->str_cur = to - str->str_ptr;
    return from;
}

STR *
str_new(len)
int len;
{
    register STR *str;
    
    if (freestrroot) {
	str = freestrroot;
	freestrroot = str->str_link.str_next;
    }
    else {
	str = (STR *) safemalloc(sizeof(STR));
	bzero((char*)str,sizeof(STR));
    }
    if (len)
	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
    return str;
}

void
str_grow(str,len)
register STR *str;
int len;
{
    if (len && str)
	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
}

/* make str point to what nstr did */

void
str_replace(str,nstr)
register STR *str;
register STR *nstr;
{
    safefree(str->str_ptr);
    str->str_ptr = nstr->str_ptr;
    str->str_len = nstr->str_len;
    str->str_cur = nstr->str_cur;
    str->str_pok = nstr->str_pok;
    if (str->str_nok = nstr->str_nok)
	str->str_nval = nstr->str_nval;
    safefree((char*)nstr);
}

void
str_free(str)
register STR *str;
{
    if (!str)
	return;
    if (str->str_len)
	str->str_ptr[0] = '\0';
    str->str_cur = 0;
    str->str_nok = 0;
    str->str_pok = 0;
    str->str_link.str_next = freestrroot;
    freestrroot = str;
}

str_len(str)
register STR *str;
{
    if (!str)
	return 0;
    if (!(str->str_pok))
	str_2ptr(str);
    if (str->str_len)
	return str->str_cur;
    else
	return 0;
}

char *
str_gets(str,fp)
register STR *str;
register FILE *fp;
{
#ifdef STDSTDIO		/* Here is some breathtakingly efficient cheating */

    register char *bp;		/* we're going to steal some values */
    register int cnt;		/*  from the stdio struct and put EVERYTHING */
    register STDCHAR *ptr;	/*   in the innermost loop into registers */
    register char newline = '\n';	/* (assuming at least 6 registers) */
    int i;
    int bpx;

    cnt = fp->_cnt;			/* get count into register */
    str->str_nok = 0;			/* invalidate number */
    str->str_pok = 1;			/* validate pointer */
    if (str->str_len <= cnt)		/* make sure we have the room */
	GROWSTR(&(str->str_ptr), &(str->str_len), cnt+1);
    bp = str->str_ptr;			/* move these two too to registers */
    ptr = fp->_ptr;
    for (;;) {
	while (--cnt >= 0) {
	    if ((*bp++ = *ptr++) == newline)
		if (bp <= str->str_ptr || bp[-2] != '\\')
		    goto thats_all_folks;
		else {
		    line++;
		    bp -= 2;
		}
	}
	
	fp->_cnt = cnt;			/* deregisterize cnt and ptr */
	fp->_ptr = ptr;
	i = _filbuf(fp);		/* get more characters */
	cnt = fp->_cnt;
	ptr = fp->_ptr;			/* reregisterize cnt and ptr */

	bpx = bp - str->str_ptr;	/* prepare for possible relocation */
	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + cnt + 1);
	bp = str->str_ptr + bpx;	/* reconstitute our pointer */

	if (i == newline) {		/* all done for now? */
	    *bp++ = i;
	    goto thats_all_folks;
	}
	else if (i == EOF)		/* all done for ever? */
	    goto thats_all_folks;
	*bp++ = i;			/* now go back to screaming loop */
    }

thats_all_folks:
    fp->_cnt = cnt;			/* put these back or we're in trouble */
    fp->_ptr = ptr;
    *bp = '\0';
    str->str_cur = bp - str->str_ptr;	/* set length */

#else /* !STDSTDIO */	/* The big, slow, and stupid way */

    static char buf[4192];

    if (fgets(buf, sizeof buf, fp) != Nullch)
	str_set(str, buf);
    else
	str_set(str, No);

#endif /* STDSTDIO */

    return str->str_cur ? str->str_ptr : Nullch;
}

void
str_inc(str)
register STR *str;
{
    register char *d;

    if (!str)
	return;
    if (str->str_nok) {
	str->str_nval += 1.0;
	str->str_pok = 0;
	return;
    }
    if (!str->str_pok) {
	str->str_nval = 1.0;
	str->str_nok = 1;
	return;
    }
    for (d = str->str_ptr; *d && *d != '.'; d++) ;
    d--;
    if (!isdigit(*str->str_ptr) || !isdigit(*d) ) {
        str_numset(str,atof(str->str_ptr) + 1.0);  /* punt */
	return;
    }
    while (d >= str->str_ptr) {
	if (++*d <= '9')
	    return;
	*(d--) = '0';
    }
    /* oh,oh, the number grew */
    GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + 2);
    str->str_cur++;
    for (d = str->str_ptr + str->str_cur; d > str->str_ptr; d--)
	*d = d[-1];
    *d = '1';
}

void
str_dec(str)
register STR *str;
{
    register char *d;

    if (!str)
	return;
    if (str->str_nok) {
	str->str_nval -= 1.0;
	str->str_pok = 0;
	return;
    }
    if (!str->str_pok) {
	str->str_nval = -1.0;
	str->str_nok = 1;
	return;
    }
    for (d = str->str_ptr; *d && *d != '.'; d++) ;
    d--;
    if (!isdigit(*str->str_ptr) || !isdigit(*d) || (*d == '0' && d == str->str_ptr)) {
        str_numset(str,atof(str->str_ptr) - 1.0);  /* punt */
	return;
    }
    while (d >= str->str_ptr) {
	if (--*d >= '0')
	    return;
	*(d--) = '9';
    }
}

/* make a string that will exist for the duration of the expression eval */

STR *
str_mortal(oldstr)
STR *oldstr;
{
    register STR *str = str_new(0);
    static long tmps_size = -1;

    str_sset(str,oldstr);
    if (++tmps_max > tmps_size) {
	tmps_size = tmps_max;
	if (!(tmps_size & 127)) {
	    if (tmps_size)
		tmps_list = (STR**)saferealloc((char*)tmps_list,
		    (tmps_size + 128) * sizeof(STR*) );
	    else
		tmps_list = (STR**)safemalloc(128 * sizeof(char*));
	}
    }
    tmps_list[tmps_max] = str;
    return str;
}

STR *
str_make(s)
char *s;
{
    register STR *str = str_new(0);

    str_set(str,s);
    return str;
}

STR *
str_nmake(n)
double n;
{
    register STR *str = str_new(0);

    str_numset(str,n);
    return str;
}
Commit	Line	Data
fe14fcc3	1	/* $Header: str.c,v 4.0 91/03/20 01:58:15 lwall Locked $
a687059c	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: str.c,v $
fe14fcc3	9	* Revision 4.0 91/03/20 01:58:15 lwall
fe14fcc3	10	* 4.0 baseline.
8d063cd8	11	*
	12	*/
	13
	14	#include "handy.h"
	15	#include "EXTERN.h"
	16	#include "util.h"
	17	#include "a2p.h"
	18
	19	str_numset(str,num)
	20	register STR *str;
	21	double num;
	22	{
	23	str->str_nval = num;
	24	str->str_pok = 0; /* invalidate pointer */
	25	str->str_nok = 1; /* validate number */
	26	}
	27
	28	char *
	29	str_2ptr(str)
	30	register STR *str;
	31	{
	32	register char *s;
	33
	34	if (!str)
	35	return "";
	36	GROWSTR(&(str->str_ptr), &(str->str_len), 24);
	37	s = str->str_ptr;
	38	if (str->str_nok) {
	39	sprintf(s,"%.20g",str->str_nval);
	40	while (*s) s++;
	41	}
	42	*s = '\0';
	43	str->str_cur = s - str->str_ptr;
	44	str->str_pok = 1;
	45	#ifdef DEBUGGING
	46	if (debug & 32)
	47	fprintf(stderr,"0x%lx ptr(%s)\n",str,str->str_ptr);
	48	#endif
	49	return str->str_ptr;
	50	}
	51
	52	double
	53	str_2num(str)
	54	register STR *str;
	55	{
	56	if (!str)
	57	return 0.0;
	58	if (str->str_len && str->str_pok)
	59	str->str_nval = atof(str->str_ptr);
	60	else
	61	str->str_nval = 0.0;
	62	str->str_nok = 1;
	63	#ifdef DEBUGGING
	64	if (debug & 32)
	65	fprintf(stderr,"0x%lx num(%g)\n",str,str->str_nval);
	66	#endif
	67	return str->str_nval;
	68	}
	69
	70	str_sset(dstr,sstr)
	71	STR *dstr;
	72	register STR *sstr;
	73	{
	74	if (!sstr)
75	str_nset(dstr,No,0);
76	else if (sstr->str_nok)
77	str_numset(dstr,sstr->str_nval);
78	else if (sstr->str_pok)
79	str_nset(dstr,sstr->str_ptr,sstr->str_cur);
80	else
81	str_nset(dstr,"",0);
82	}
83
84	str_nset(str,ptr,len)
85	register STR *str;
86	register char *ptr;
87	register int len;
88	{
89	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
90	bcopy(ptr,str->str_ptr,len);
91	str->str_cur = len;
92	*(str->str_ptr+str->str_cur) = '\0';
93	str->str_nok = 0; /* invalidate number */
94	str->str_pok = 1; /* validate pointer */
95	}
96
97	str_set(str,ptr)
98	register STR *str;
99	register char *ptr;
100	{
101	register int len;
102
103	if (!ptr)
104	ptr = "";
105	len = strlen(ptr);
106	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
107	bcopy(ptr,str->str_ptr,len+1);
108	str->str_cur = len;
109	str->str_nok = 0; /* invalidate number */
110	str->str_pok = 1; /* validate pointer */
111	}
112
113	str_chop(str,ptr) /* like set but assuming ptr is in str */
114	register STR *str;
115	register char *ptr;
116	{
117	if (!(str->str_pok))
118	str_2ptr(str);
119	str->str_cur -= (ptr - str->str_ptr);
120	bcopy(ptr,str->str_ptr, str->str_cur + 1);
121	str->str_nok = 0; /* invalidate number */
122	str->str_pok = 1; /* validate pointer */
123	}
124
125	str_ncat(str,ptr,len)
126	register STR *str;
127	register char *ptr;
128	register int len;
129	{
130	if (!(str->str_pok))
131	str_2ptr(str);
132	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
133	bcopy(ptr,str->str_ptr+str->str_cur,len);
134	str->str_cur += len;
135	*(str->str_ptr+str->str_cur) = '\0';
136	str->str_nok = 0; /* invalidate number */
137	str->str_pok = 1; /* validate pointer */
138	}
139
140	str_scat(dstr,sstr)
141	STR *dstr;
142	register STR *sstr;
143	{
144	if (!(sstr->str_pok))
145	str_2ptr(sstr);
146	if (sstr)
147	str_ncat(dstr,sstr->str_ptr,sstr->str_cur);
148	}
149
150	str_cat(str,ptr)
151	register STR *str;
152	register char *ptr;
153	{
154	register int len;
155
156	if (!ptr)
157	return;
158	if (!(str->str_pok))
159	str_2ptr(str);
160	len = strlen(ptr);
161	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
162	bcopy(ptr,str->str_ptr+str->str_cur,len+1);
163	str->str_cur += len;
164	str->str_nok = 0; /* invalidate number */
165	str->str_pok = 1; /* validate pointer */
166	}
167
168	char *
169	str_append_till(str,from,delim,keeplist)
170	register STR *str;
171	register char *from;
172	register int delim;
173	char *keeplist;
174	{
175	register char *to;
176	register int len;
177
178	if (!from)
179	return Nullch;
180	len = strlen(from);
181	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
182	str->str_nok = 0; /* invalidate number */
183	str->str_pok = 1; /* validate pointer */
184	to = str->str_ptr+str->str_cur;
185	for (; *from; from++,to++) {
186	if (*from == '\\' && from[1] && delim != '\\') {
187	if (!keeplist) {
188	if (from[1] == delim \|\| from[1] == '\\')
189	from++;
190	else
191	to++ = from++;
192	}
193	else if (index(keeplist,from[1]))
194	to++ = from++;
195	else
196	from++;
197	}
198	else if (*from == delim)
199	break;
200	to = from;
201	}
202	*to = '\0';
203	str->str_cur = to - str->str_ptr;
204	return from;
205	}
206
207	STR *
208	str_new(len)
209	int len;
210	{
211	register STR *str;
212
213	if (freestrroot) {
214	str = freestrroot;
215	freestrroot = str->str_link.str_next;
216	}
217	else {
218	str = (STR *) safemalloc(sizeof(STR));
219	bzero((char*)str,sizeof(STR));
220	}
221	if (len)
222	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
223	return str;
224	}
225
226	void
227	str_grow(str,len)
228	register STR *str;
229	int len;
230	{
231	if (len && str)
232	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
233	}
234
235	/* make str point to what nstr did */
236
237	void
238	str_replace(str,nstr)
239	register STR *str;
240	register STR *nstr;
241	{
242	safefree(str->str_ptr);
243	str->str_ptr = nstr->str_ptr;
244	str->str_len = nstr->str_len;
245	str->str_cur = nstr->str_cur;
246	str->str_pok = nstr->str_pok;
247	if (str->str_nok = nstr->str_nok)
248	str->str_nval = nstr->str_nval;
249	safefree((char*)nstr);
250	}
251
252	void
253	str_free(str)
254	register STR *str;
255	{
256	if (!str)
257	return;
258	if (str->str_len)
259	str->str_ptr[0] = '\0';
260	str->str_cur = 0;
261	str->str_nok = 0;
262	str->str_pok = 0;
263	str->str_link.str_next = freestrroot;
264	freestrroot = str;
265	}
266
267	str_len(str)
268	register STR *str;
269	{
270	if (!str)
271	return 0;
272	if (!(str->str_pok))
273	str_2ptr(str);
274	if (str->str_len)
275	return str->str_cur;
276	else
277	return 0;
278	}
279
280	char *
281	str_gets(str,fp)
282	register STR *str;
283	register FILE *fp;
284	{
285	#ifdef STDSTDIO /* Here is some breathtakingly efficient cheating */
286
287	register char bp; / we're going to steal some values */
288	register int cnt; /* from the stdio struct and put EVERYTHING */
378cc40b	289	register STDCHAR ptr; / in the innermost loop into registers */
8d063cd8	290	register char newline = '\n'; /* (assuming at least 6 registers) */
	291	int i;
	292	int bpx;
	293
	294	cnt = fp->_cnt; /* get count into register */
	295	str->str_nok = 0; /* invalidate number */
	296	str->str_pok = 1; /* validate pointer */
	297	if (str->str_len <= cnt) /* make sure we have the room */
	298	GROWSTR(&(str->str_ptr), &(str->str_len), cnt+1);
	299	bp = str->str_ptr; /* move these two too to registers */
	300	ptr = fp->_ptr;
	301	for (;;) {
378cc40b	302	while (--cnt >= 0) {
	303	if ((bp++ = ptr++) == newline)
	304	if (bp <= str->str_ptr \|\| bp[-2] != '\\')
	305	goto thats_all_folks;
	306	else {
	307	line++;
	308	bp -= 2;
	309	}
8d063cd8	310	}
	311
	312	fp->_cnt = cnt; /* deregisterize cnt and ptr */
	313	fp->_ptr = ptr;
	314	i = _filbuf(fp); /* get more characters */
	315	cnt = fp->_cnt;
	316	ptr = fp->_ptr; /* reregisterize cnt and ptr */
	317
	318	bpx = bp - str->str_ptr; /* prepare for possible relocation */
	319	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + cnt + 1);
	320	bp = str->str_ptr + bpx; /* reconstitute our pointer */
	321
	322	if (i == newline) { /* all done for now? */
	323	*bp++ = i;
	324	goto thats_all_folks;
	325	}
	326	else if (i == EOF) /* all done for ever? */
	327	goto thats_all_folks;
	328	bp++ = i; / now go back to screaming loop */
	329	}
	330
	331	thats_all_folks:
	332	fp->_cnt = cnt; /* put these back or we're in trouble */
	333	fp->_ptr = ptr;
	334	*bp = '\0';
	335	str->str_cur = bp - str->str_ptr; /* set length */
	336
	337	#else /* !STDSTDIO / / The big, slow, and stupid way */
	338
	339	static char buf[4192];
	340
	341	if (fgets(buf, sizeof buf, fp) != Nullch)
	342	str_set(str, buf);
	343	else
	344	str_set(str, No);
	345
	346	#endif /* STDSTDIO */
	347
	348	return str->str_cur ? str->str_ptr : Nullch;
	349	}
	350
	351	void
	352	str_inc(str)
	353	register STR *str;
	354	{
	355	register char *d;
	356
	357	if (!str)
	358	return;
	359	if (str->str_nok) {
	360	str->str_nval += 1.0;
	361	str->str_pok = 0;
	362	return;
	363	}
	364	if (!str->str_pok) {
	365	str->str_nval = 1.0;
	366	str->str_nok = 1;
	367	return;
	368	}
	369	for (d = str->str_ptr; d && d != '.'; d++) ;
	370	d--;
	371	if (!isdigit(str->str_ptr) \|\| !isdigit(d) ) {
	372	str_numset(str,atof(str->str_ptr) + 1.0); /* punt */
	373	return;
374	}
375	while (d >= str->str_ptr) {
376	if (++*d <= '9')
377	return;
378	*(d--) = '0';
379	}
380	/* oh,oh, the number grew */
381	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + 2);
382	str->str_cur++;
383	for (d = str->str_ptr + str->str_cur; d > str->str_ptr; d--)
384	*d = d[-1];
385	*d = '1';
386	}
387
388	void
389	str_dec(str)
390	register STR *str;
391	{
392	register char *d;
393
394	if (!str)
395	return;
396	if (str->str_nok) {
397	str->str_nval -= 1.0;
398	str->str_pok = 0;
399	return;
400	}
401	if (!str->str_pok) {
402	str->str_nval = -1.0;
403	str->str_nok = 1;
404	return;
405	}
406	for (d = str->str_ptr; d && d != '.'; d++) ;
407	d--;
408	if (!isdigit(str->str_ptr) \|\| !isdigit(d) \|\| (*d == '0' && d == str->str_ptr)) {
409	str_numset(str,atof(str->str_ptr) - 1.0); /* punt */
410	return;
411	}
412	while (d >= str->str_ptr) {
413	if (--*d >= '0')
414	return;
415	*(d--) = '9';
416	}
417	}
418
419	/* make a string that will exist for the duration of the expression eval */
420
421	STR *
fe14fcc3	422	str_mortal(oldstr)
8d063cd8	423	STR *oldstr;
	424	{
	425	register STR *str = str_new(0);
	426	static long tmps_size = -1;
	427
	428	str_sset(str,oldstr);
	429	if (++tmps_max > tmps_size) {
	430	tmps_size = tmps_max;
	431	if (!(tmps_size & 127)) {
	432	if (tmps_size)
	433	tmps_list = (STR*)saferealloc((char)tmps_list,
	434	(tmps_size + 128) * sizeof(STR*) );
	435	else
	436	tmps_list = (STR*)safemalloc(128 sizeof(char*));
	437	}
	438	}
	439	tmps_list[tmps_max] = str;
	440	return str;
	441	}
	442
	443	STR *
	444	str_make(s)
	445	char *s;
	446	{
	447	register STR *str = str_new(0);
	448
	449	str_set(str,s);
	450	return str;
	451	}
	452
	453	STR *
	454	str_nmake(n)
	455	double n;
	456	{
	457	register STR *str = str_new(0);
	458
	459	str_numset(str,n);
	460	return str;
	461	}