1 /* $RCSfile: str.c,v $$Revision: 4.0.1.1 $$Date: 91/06/07 12:20:08 $
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 4.0.1.1 91/06/07 12:20:08 lwall
10 * patch4: new copyright notice
12 * Revision 4.0 91/03/20 01:58:15 lwall
27 str->str_pok = 0; /* invalidate pointer */
28 str->str_nok = 1; /* validate number */
39 GROWSTR(&(str->str_ptr), &(str->str_len), 24);
42 sprintf(s,"%.20g",str->str_nval);
46 str->str_cur = s - str->str_ptr;
50 fprintf(stderr,"0x%lx ptr(%s)\n",str,str->str_ptr);
61 if (str->str_len && str->str_pok)
62 str->str_nval = atof(str->str_ptr);
68 fprintf(stderr,"0x%lx num(%g)\n",str,str->str_nval);
79 else if (sstr->str_nok)
80 str_numset(dstr,sstr->str_nval);
81 else if (sstr->str_pok)
82 str_nset(dstr,sstr->str_ptr,sstr->str_cur);
92 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
93 bcopy(ptr,str->str_ptr,len);
95 *(str->str_ptr+str->str_cur) = '\0';
96 str->str_nok = 0; /* invalidate number */
97 str->str_pok = 1; /* validate pointer */
109 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
110 bcopy(ptr,str->str_ptr,len+1);
112 str->str_nok = 0; /* invalidate number */
113 str->str_pok = 1; /* validate pointer */
116 str_chop(str,ptr) /* like set but assuming ptr is in str */
122 str->str_cur -= (ptr - str->str_ptr);
123 bcopy(ptr,str->str_ptr, str->str_cur + 1);
124 str->str_nok = 0; /* invalidate number */
125 str->str_pok = 1; /* validate pointer */
128 str_ncat(str,ptr,len)
135 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
136 bcopy(ptr,str->str_ptr+str->str_cur,len);
138 *(str->str_ptr+str->str_cur) = '\0';
139 str->str_nok = 0; /* invalidate number */
140 str->str_pok = 1; /* validate pointer */
147 if (!(sstr->str_pok))
150 str_ncat(dstr,sstr->str_ptr,sstr->str_cur);
164 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
165 bcopy(ptr,str->str_ptr+str->str_cur,len+1);
167 str->str_nok = 0; /* invalidate number */
168 str->str_pok = 1; /* validate pointer */
172 str_append_till(str,from,delim,keeplist)
184 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
185 str->str_nok = 0; /* invalidate number */
186 str->str_pok = 1; /* validate pointer */
187 to = str->str_ptr+str->str_cur;
188 for (; *from; from++,to++) {
189 if (*from == '\\' && from[1] && delim != '\\') {
191 if (from[1] == delim || from[1] == '\\')
196 else if (index(keeplist,from[1]))
201 else if (*from == delim)
206 str->str_cur = to - str->str_ptr;
218 freestrroot = str->str_link.str_next;
221 str = (STR *) safemalloc(sizeof(STR));
222 bzero((char*)str,sizeof(STR));
225 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
235 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
238 /* make str point to what nstr did */
241 str_replace(str,nstr)
245 safefree(str->str_ptr);
246 str->str_ptr = nstr->str_ptr;
247 str->str_len = nstr->str_len;
248 str->str_cur = nstr->str_cur;
249 str->str_pok = nstr->str_pok;
250 if (str->str_nok = nstr->str_nok)
251 str->str_nval = nstr->str_nval;
252 safefree((char*)nstr);
262 str->str_ptr[0] = '\0';
266 str->str_link.str_next = freestrroot;
288 #ifdef STDSTDIO /* Here is some breathtakingly efficient cheating */
290 register char *bp; /* we're going to steal some values */
291 register int cnt; /* from the stdio struct and put EVERYTHING */
292 register STDCHAR *ptr; /* in the innermost loop into registers */
293 register char newline = '\n'; /* (assuming at least 6 registers) */
297 cnt = fp->_cnt; /* get count into register */
298 str->str_nok = 0; /* invalidate number */
299 str->str_pok = 1; /* validate pointer */
300 if (str->str_len <= cnt) /* make sure we have the room */
301 GROWSTR(&(str->str_ptr), &(str->str_len), cnt+1);
302 bp = str->str_ptr; /* move these two too to registers */
306 if ((*bp++ = *ptr++) == newline)
307 if (bp <= str->str_ptr || bp[-2] != '\\')
308 goto thats_all_folks;
315 fp->_cnt = cnt; /* deregisterize cnt and ptr */
317 i = _filbuf(fp); /* get more characters */
319 ptr = fp->_ptr; /* reregisterize cnt and ptr */
321 bpx = bp - str->str_ptr; /* prepare for possible relocation */
322 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + cnt + 1);
323 bp = str->str_ptr + bpx; /* reconstitute our pointer */
325 if (i == newline) { /* all done for now? */
327 goto thats_all_folks;
329 else if (i == EOF) /* all done for ever? */
330 goto thats_all_folks;
331 *bp++ = i; /* now go back to screaming loop */
335 fp->_cnt = cnt; /* put these back or we're in trouble */
338 str->str_cur = bp - str->str_ptr; /* set length */
340 #else /* !STDSTDIO */ /* The big, slow, and stupid way */
342 static char buf[4192];
344 if (fgets(buf, sizeof buf, fp) != Nullch)
349 #endif /* STDSTDIO */
351 return str->str_cur ? str->str_ptr : Nullch;
363 str->str_nval += 1.0;
372 for (d = str->str_ptr; *d && *d != '.'; d++) ;
374 if (!isdigit(*str->str_ptr) || !isdigit(*d) ) {
375 str_numset(str,atof(str->str_ptr) + 1.0); /* punt */
378 while (d >= str->str_ptr) {
383 /* oh,oh, the number grew */
384 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + 2);
386 for (d = str->str_ptr + str->str_cur; d > str->str_ptr; d--)
400 str->str_nval -= 1.0;
405 str->str_nval = -1.0;
409 for (d = str->str_ptr; *d && *d != '.'; d++) ;
411 if (!isdigit(*str->str_ptr) || !isdigit(*d) || (*d == '0' && d == str->str_ptr)) {
412 str_numset(str,atof(str->str_ptr) - 1.0); /* punt */
415 while (d >= str->str_ptr) {
422 /* make a string that will exist for the duration of the expression eval */
428 register STR *str = str_new(0);
429 static long tmps_size = -1;
431 str_sset(str,oldstr);
432 if (++tmps_max > tmps_size) {
433 tmps_size = tmps_max;
434 if (!(tmps_size & 127)) {
436 tmps_list = (STR**)saferealloc((char*)tmps_list,
437 (tmps_size + 128) * sizeof(STR*) );
439 tmps_list = (STR**)safemalloc(128 * sizeof(char*));
442 tmps_list[tmps_max] = str;
450 register STR *str = str_new(0);
460 register STR *str = str_new(0);