1 /* $RCSfile: str.c,v $$Revision: 1.1.1.1 $$Date: 1994/09/10 06:27:54 $
3 * Copyright (c) 1991, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
9 * Revision 1.1.1.1 1994/09/10 06:27:54 gclarkii
10 * Initial import of Perl 4.046 bmaked
12 * Revision 1.1.1.1 1993/08/23 21:30:09 nate
15 * Revision 4.0.1.1 91/06/07 12:20:08 lwall
16 * patch4: new copyright notice
18 * Revision 4.0 91/03/20 01:58:15 lwall
33 str->str_pok = 0; /* invalidate pointer */
34 str->str_nok = 1; /* validate number */
45 GROWSTR(&(str->str_ptr), &(str->str_len), 24);
48 sprintf(s,"%.20g",str->str_nval);
52 str->str_cur = s - str->str_ptr;
56 fprintf(stderr,"0x%lx ptr(%s)\n",str,str->str_ptr);
67 if (str->str_len && str->str_pok)
68 str->str_nval = atof(str->str_ptr);
74 fprintf(stderr,"0x%lx num(%g)\n",str,str->str_nval);
85 else if (sstr->str_nok)
86 str_numset(dstr,sstr->str_nval);
87 else if (sstr->str_pok)
88 str_nset(dstr,sstr->str_ptr,sstr->str_cur);
98 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
99 bcopy(ptr,str->str_ptr,len);
101 *(str->str_ptr+str->str_cur) = '\0';
102 str->str_nok = 0; /* invalidate number */
103 str->str_pok = 1; /* validate pointer */
115 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
116 bcopy(ptr,str->str_ptr,len+1);
118 str->str_nok = 0; /* invalidate number */
119 str->str_pok = 1; /* validate pointer */
122 str_chop(str,ptr) /* like set but assuming ptr is in str */
128 str->str_cur -= (ptr - str->str_ptr);
129 bcopy(ptr,str->str_ptr, str->str_cur + 1);
130 str->str_nok = 0; /* invalidate number */
131 str->str_pok = 1; /* validate pointer */
134 str_ncat(str,ptr,len)
141 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
142 bcopy(ptr,str->str_ptr+str->str_cur,len);
144 *(str->str_ptr+str->str_cur) = '\0';
145 str->str_nok = 0; /* invalidate number */
146 str->str_pok = 1; /* validate pointer */
153 if (!(sstr->str_pok))
156 str_ncat(dstr,sstr->str_ptr,sstr->str_cur);
170 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
171 bcopy(ptr,str->str_ptr+str->str_cur,len+1);
173 str->str_nok = 0; /* invalidate number */
174 str->str_pok = 1; /* validate pointer */
178 str_append_till(str,from,delim,keeplist)
190 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
191 str->str_nok = 0; /* invalidate number */
192 str->str_pok = 1; /* validate pointer */
193 to = str->str_ptr+str->str_cur;
194 for (; *from; from++,to++) {
195 if (*from == '\\' && from[1] && delim != '\\') {
197 if (from[1] == delim || from[1] == '\\')
202 else if (index(keeplist,from[1]))
207 else if (*from == delim)
212 str->str_cur = to - str->str_ptr;
224 freestrroot = str->str_link.str_next;
227 str = (STR *) safemalloc(sizeof(STR));
228 bzero((char*)str,sizeof(STR));
231 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
241 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
244 /* make str point to what nstr did */
247 str_replace(str,nstr)
251 safefree(str->str_ptr);
252 str->str_ptr = nstr->str_ptr;
253 str->str_len = nstr->str_len;
254 str->str_cur = nstr->str_cur;
255 str->str_pok = nstr->str_pok;
256 if (str->str_nok = nstr->str_nok)
257 str->str_nval = nstr->str_nval;
258 safefree((char*)nstr);
268 str->str_ptr[0] = '\0';
272 str->str_link.str_next = freestrroot;
294 #ifdef STDSTDIO /* Here is some breathtakingly efficient cheating */
296 register char *bp; /* we're going to steal some values */
297 register int cnt; /* from the stdio struct and put EVERYTHING */
298 register STDCHAR *ptr; /* in the innermost loop into registers */
299 register char newline = '\n'; /* (assuming at least 6 registers) */
303 cnt = fp->_cnt; /* get count into register */
304 str->str_nok = 0; /* invalidate number */
305 str->str_pok = 1; /* validate pointer */
306 if (str->str_len <= cnt) /* make sure we have the room */
307 GROWSTR(&(str->str_ptr), &(str->str_len), cnt+1);
308 bp = str->str_ptr; /* move these two too to registers */
312 if ((*bp++ = *ptr++) == newline)
313 if (bp <= str->str_ptr || bp[-2] != '\\')
314 goto thats_all_folks;
321 fp->_cnt = cnt; /* deregisterize cnt and ptr */
323 i = _filbuf(fp); /* get more characters */
325 ptr = fp->_ptr; /* reregisterize cnt and ptr */
327 bpx = bp - str->str_ptr; /* prepare for possible relocation */
328 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + cnt + 1);
329 bp = str->str_ptr + bpx; /* reconstitute our pointer */
331 if (i == newline) { /* all done for now? */
333 goto thats_all_folks;
335 else if (i == EOF) /* all done for ever? */
336 goto thats_all_folks;
337 *bp++ = i; /* now go back to screaming loop */
341 fp->_cnt = cnt; /* put these back or we're in trouble */
344 str->str_cur = bp - str->str_ptr; /* set length */
346 #else /* !STDSTDIO */ /* The big, slow, and stupid way */
348 static char buf[4192];
350 if (fgets(buf, sizeof buf, fp) != Nullch)
355 #endif /* STDSTDIO */
357 return str->str_cur ? str->str_ptr : Nullch;
369 str->str_nval += 1.0;
378 for (d = str->str_ptr; *d && *d != '.'; d++) ;
380 if (!isdigit(*str->str_ptr) || !isdigit(*d) ) {
381 str_numset(str,atof(str->str_ptr) + 1.0); /* punt */
384 while (d >= str->str_ptr) {
389 /* oh,oh, the number grew */
390 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + 2);
392 for (d = str->str_ptr + str->str_cur; d > str->str_ptr; d--)
406 str->str_nval -= 1.0;
411 str->str_nval = -1.0;
415 for (d = str->str_ptr; *d && *d != '.'; d++) ;
417 if (!isdigit(*str->str_ptr) || !isdigit(*d) || (*d == '0' && d == str->str_ptr)) {
418 str_numset(str,atof(str->str_ptr) - 1.0); /* punt */
421 while (d >= str->str_ptr) {
428 /* make a string that will exist for the duration of the expression eval */
434 register STR *str = str_new(0);
435 static long tmps_size = -1;
437 str_sset(str,oldstr);
438 if (++tmps_max > tmps_size) {
439 tmps_size = tmps_max;
440 if (!(tmps_size & 127)) {
442 tmps_list = (STR**)saferealloc((char*)tmps_list,
443 (tmps_size + 128) * sizeof(STR*) );
445 tmps_list = (STR**)safemalloc(128 * sizeof(char*));
448 tmps_list[tmps_max] = str;
456 register STR *str = str_new(0);
466 register STR *str = str_new(0);