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

/* $RCSfile: str.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:26 $
 *
 *    Copyright (c) 1991, Larry Wall
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 * $Log:	str.c,v $
 */

#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 (strchr(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 USE_STD_STDIO		/* 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 /* !USE_STD_STDIO */	/* 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 /* USE_STD_STDIO */

    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
79072805	1	/* $RCSfile: str.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:26 $
a687059c	2	*
d48672a2	3	* Copyright (c) 1991, Larry Wall
a687059c	4	*
d48672a2	5	* You may distribute under the terms of either the GNU General Public
d48672a2	6	* License or the Artistic License, as specified in the README file.
8d063cd8	7	*
8d063cd8	8	* $Log: str.c,v $
8d063cd8	9	*/
	10
	11	#include "handy.h"
	12	#include "EXTERN.h"
	13	#include "util.h"
	14	#include "a2p.h"
	15
	16	str_numset(str,num)
	17	register STR *str;
	18	double num;
	19	{
	20	str->str_nval = num;
	21	str->str_pok = 0; /* invalidate pointer */
	22	str->str_nok = 1; /* validate number */
	23	}
	24
	25	char *
	26	str_2ptr(str)
	27	register STR *str;
	28	{
	29	register char *s;
	30
	31	if (!str)
	32	return "";
	33	GROWSTR(&(str->str_ptr), &(str->str_len), 24);
	34	s = str->str_ptr;
	35	if (str->str_nok) {
	36	sprintf(s,"%.20g",str->str_nval);
	37	while (*s) s++;
	38	}
	39	*s = '\0';
	40	str->str_cur = s - str->str_ptr;
	41	str->str_pok = 1;
	42	#ifdef DEBUGGING
	43	if (debug & 32)
	44	fprintf(stderr,"0x%lx ptr(%s)\n",str,str->str_ptr);
	45	#endif
	46	return str->str_ptr;
	47	}
	48
	49	double
	50	str_2num(str)
	51	register STR *str;
	52	{
	53	if (!str)
	54	return 0.0;
	55	if (str->str_len && str->str_pok)
	56	str->str_nval = atof(str->str_ptr);
	57	else
	58	str->str_nval = 0.0;
	59	str->str_nok = 1;
	60	#ifdef DEBUGGING
	61	if (debug & 32)
	62	fprintf(stderr,"0x%lx num(%g)\n",str,str->str_nval);
	63	#endif
	64	return str->str_nval;
	65	}
	66
	67	str_sset(dstr,sstr)
	68	STR *dstr;
	69	register STR *sstr;
	70	{
	71	if (!sstr)
	72	str_nset(dstr,No,0);
73	else if (sstr->str_nok)
74	str_numset(dstr,sstr->str_nval);
75	else if (sstr->str_pok)
76	str_nset(dstr,sstr->str_ptr,sstr->str_cur);
77	else
78	str_nset(dstr,"",0);
79	}
80
81	str_nset(str,ptr,len)
82	register STR *str;
83	register char *ptr;
84	register int len;
85	{
86	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
87	bcopy(ptr,str->str_ptr,len);
88	str->str_cur = len;
89	*(str->str_ptr+str->str_cur) = '\0';
90	str->str_nok = 0; /* invalidate number */
91	str->str_pok = 1; /* validate pointer */
92	}
93
94	str_set(str,ptr)
95	register STR *str;
96	register char *ptr;
97	{
98	register int len;
99
100	if (!ptr)
101	ptr = "";
102	len = strlen(ptr);
103	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
104	bcopy(ptr,str->str_ptr,len+1);
105	str->str_cur = len;
106	str->str_nok = 0; /* invalidate number */
107	str->str_pok = 1; /* validate pointer */
108	}
109
110	str_chop(str,ptr) /* like set but assuming ptr is in str */
111	register STR *str;
112	register char *ptr;
113	{
114	if (!(str->str_pok))
115	str_2ptr(str);
116	str->str_cur -= (ptr - str->str_ptr);
117	bcopy(ptr,str->str_ptr, str->str_cur + 1);
118	str->str_nok = 0; /* invalidate number */
119	str->str_pok = 1; /* validate pointer */
120	}
121
122	str_ncat(str,ptr,len)
123	register STR *str;
124	register char *ptr;
125	register int len;
126	{
127	if (!(str->str_pok))
128	str_2ptr(str);
129	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
130	bcopy(ptr,str->str_ptr+str->str_cur,len);
131	str->str_cur += len;
132	*(str->str_ptr+str->str_cur) = '\0';
133	str->str_nok = 0; /* invalidate number */
134	str->str_pok = 1; /* validate pointer */
135	}
136
137	str_scat(dstr,sstr)
138	STR *dstr;
139	register STR *sstr;
140	{
141	if (!(sstr->str_pok))
142	str_2ptr(sstr);
143	if (sstr)
144	str_ncat(dstr,sstr->str_ptr,sstr->str_cur);
145	}
146
147	str_cat(str,ptr)
148	register STR *str;
149	register char *ptr;
150	{
151	register int len;
152
153	if (!ptr)
154	return;
155	if (!(str->str_pok))
156	str_2ptr(str);
157	len = strlen(ptr);
158	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
159	bcopy(ptr,str->str_ptr+str->str_cur,len+1);
160	str->str_cur += len;
161	str->str_nok = 0; /* invalidate number */
162	str->str_pok = 1; /* validate pointer */
163	}
164
165	char *
166	str_append_till(str,from,delim,keeplist)
167	register STR *str;
168	register char *from;
169	register int delim;
170	char *keeplist;
171	{
172	register char *to;
173	register int len;
174
175	if (!from)
176	return Nullch;
177	len = strlen(from);
178	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
179	str->str_nok = 0; /* invalidate number */
180	str->str_pok = 1; /* validate pointer */
181	to = str->str_ptr+str->str_cur;
182	for (; *from; from++,to++) {
183	if (*from == '\\' && from[1] && delim != '\\') {
184	if (!keeplist) {
185	if (from[1] == delim \|\| from[1] == '\\')
186	from++;
187	else
188	to++ = from++;
189	}
a0d0e21e	190	else if (strchr(keeplist,from[1]))
8d063cd8	191	to++ = from++;
	192	else
	193	from++;
	194	}
	195	else if (*from == delim)
	196	break;
	197	to = from;
	198	}
	199	*to = '\0';
	200	str->str_cur = to - str->str_ptr;
	201	return from;
	202	}
	203
	204	STR *
	205	str_new(len)
	206	int len;
	207	{
	208	register STR *str;
	209
	210	if (freestrroot) {
	211	str = freestrroot;
	212	freestrroot = str->str_link.str_next;
	213	}
	214	else {
	215	str = (STR *) safemalloc(sizeof(STR));
	216	bzero((char*)str,sizeof(STR));
	217	}
	218	if (len)
	219	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
	220	return str;
	221	}
	222
	223	void
	224	str_grow(str,len)
	225	register STR *str;
	226	int len;
	227	{
	228	if (len && str)
	229	GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
	230	}
	231
	232	/* make str point to what nstr did */
	233
	234	void
	235	str_replace(str,nstr)
	236	register STR *str;
	237	register STR *nstr;
	238	{
	239	safefree(str->str_ptr);
	240	str->str_ptr = nstr->str_ptr;
	241	str->str_len = nstr->str_len;
	242	str->str_cur = nstr->str_cur;
	243	str->str_pok = nstr->str_pok;
	244	if (str->str_nok = nstr->str_nok)
	245	str->str_nval = nstr->str_nval;
	246	safefree((char*)nstr);
	247	}
	248
	249	void
	250	str_free(str)
	251	register STR *str;
	252	{
	253	if (!str)
	254	return;
255	if (str->str_len)
256	str->str_ptr[0] = '\0';
257	str->str_cur = 0;
258	str->str_nok = 0;
259	str->str_pok = 0;
260	str->str_link.str_next = freestrroot;
261	freestrroot = str;
262	}
263
264	str_len(str)
265	register STR *str;
266	{
267	if (!str)
268	return 0;
269	if (!(str->str_pok))
270	str_2ptr(str);
271	if (str->str_len)
272	return str->str_cur;
273	else
274	return 0;
275	}
276
277	char *
278	str_gets(str,fp)
279	register STR *str;
280	register FILE *fp;
281	{
85e6fe83	282	#ifdef USE_STD_STDIO /* Here is some breathtakingly efficient cheating */
8d063cd8	283
	284	register char bp; / we're going to steal some values */
	285	register int cnt; /* from the stdio struct and put EVERYTHING */
378cc40b	286	register STDCHAR ptr; / in the innermost loop into registers */
8d063cd8	287	register char newline = '\n'; /* (assuming at least 6 registers) */
	288	int i;
	289	int bpx;
	290
	291	cnt = fp->_cnt; /* get count into register */
	292	str->str_nok = 0; /* invalidate number */
	293	str->str_pok = 1; /* validate pointer */
	294	if (str->str_len <= cnt) /* make sure we have the room */
	295	GROWSTR(&(str->str_ptr), &(str->str_len), cnt+1);
	296	bp = str->str_ptr; /* move these two too to registers */
	297	ptr = fp->_ptr;
	298	for (;;) {
378cc40b	299	while (--cnt >= 0) {
	300	if ((bp++ = ptr++) == newline)
	301	if (bp <= str->str_ptr \|\| bp[-2] != '\\')
	302	goto thats_all_folks;
	303	else {
	304	line++;
	305	bp -= 2;
	306	}
8d063cd8	307	}
	308
	309	fp->_cnt = cnt; /* deregisterize cnt and ptr */
	310	fp->_ptr = ptr;
	311	i = _filbuf(fp); /* get more characters */
	312	cnt = fp->_cnt;
	313	ptr = fp->_ptr; /* reregisterize cnt and ptr */
	314
	315	bpx = bp - str->str_ptr; /* prepare for possible relocation */
	316	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + cnt + 1);
	317	bp = str->str_ptr + bpx; /* reconstitute our pointer */
	318
	319	if (i == newline) { /* all done for now? */
	320	*bp++ = i;
	321	goto thats_all_folks;
	322	}
	323	else if (i == EOF) /* all done for ever? */
	324	goto thats_all_folks;
	325	bp++ = i; / now go back to screaming loop */
	326	}
	327
	328	thats_all_folks:
	329	fp->_cnt = cnt; /* put these back or we're in trouble */
	330	fp->_ptr = ptr;
	331	*bp = '\0';
	332	str->str_cur = bp - str->str_ptr; /* set length */
	333
85e6fe83	334	#else /* !USE_STD_STDIO / / The big, slow, and stupid way */
8d063cd8	335
	336	static char buf[4192];
	337
	338	if (fgets(buf, sizeof buf, fp) != Nullch)
	339	str_set(str, buf);
	340	else
	341	str_set(str, No);
	342
85e6fe83	343	#endif /* USE_STD_STDIO */
8d063cd8	344
	345	return str->str_cur ? str->str_ptr : Nullch;
	346	}
	347
	348	void
	349	str_inc(str)
	350	register STR *str;
	351	{
	352	register char *d;
	353
	354	if (!str)
	355	return;
	356	if (str->str_nok) {
	357	str->str_nval += 1.0;
	358	str->str_pok = 0;
	359	return;
	360	}
	361	if (!str->str_pok) {
	362	str->str_nval = 1.0;
	363	str->str_nok = 1;
	364	return;
	365	}
	366	for (d = str->str_ptr; d && d != '.'; d++) ;
	367	d--;
	368	if (!isdigit(str->str_ptr) \|\| !isdigit(d) ) {
	369	str_numset(str,atof(str->str_ptr) + 1.0); /* punt */
	370	return;
	371	}
	372	while (d >= str->str_ptr) {
	373	if (++*d <= '9')
	374	return;
	375	*(d--) = '0';
	376	}
	377	/* oh,oh, the number grew */
	378	GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + 2);
	379	str->str_cur++;
	380	for (d = str->str_ptr + str->str_cur; d > str->str_ptr; d--)
	381	*d = d[-1];
	382	*d = '1';
	383	}
	384
	385	void
	386	str_dec(str)
	387	register STR *str;
	388	{
	389	register char *d;
	390
	391	if (!str)
	392	return;
	393	if (str->str_nok) {
	394	str->str_nval -= 1.0;
	395	str->str_pok = 0;
	396	return;
	397	}
	398	if (!str->str_pok) {
	399	str->str_nval = -1.0;
	400	str->str_nok = 1;
	401	return;
	402	}
	403	for (d = str->str_ptr; d && d != '.'; d++) ;
	404	d--;
	405	if (!isdigit(str->str_ptr) \|\| !isdigit(d) \|\| (*d == '0' && d == str->str_ptr)) {
	406	str_numset(str,atof(str->str_ptr) - 1.0); /* punt */
	407	return;
408	}
409	while (d >= str->str_ptr) {
410	if (--*d >= '0')
411	return;
412	*(d--) = '9';
413	}
414	}
415
416	/* make a string that will exist for the duration of the expression eval */
417
418	STR *
fe14fcc3	419	str_mortal(oldstr)
8d063cd8	420	STR *oldstr;
	421	{
	422	register STR *str = str_new(0);
	423	static long tmps_size = -1;
	424
	425	str_sset(str,oldstr);
	426	if (++tmps_max > tmps_size) {
	427	tmps_size = tmps_max;
	428	if (!(tmps_size & 127)) {
	429	if (tmps_size)
	430	tmps_list = (STR*)saferealloc((char)tmps_list,
	431	(tmps_size + 128) * sizeof(STR*) );
	432	else
	433	tmps_list = (STR*)safemalloc(128 sizeof(char*));
	434	}
	435	}
	436	tmps_list[tmps_max] = str;
	437	return str;
	438	}
	439
	440	STR *
	441	str_make(s)
	442	char *s;
	443	{
	444	register STR *str = str_new(0);
	445
	446	str_set(str,s);
	447	return str;
	448	}
	449
	450	STR *
	451	str_nmake(n)
	452	double n;
	453	{
	454	register STR *str = str_new(0);
	455
	456	str_numset(str,n);
	457	return str;
	458	}