1 /* $Header: str.c,v 2.0 88/06/05 00:11:07 root Exp $
4 * Revision 2.0 88/06/05 00:11:07 root
5 * Baseline version 2.0.
21 if (!*s) { /* reset ?? searches */
22 for (spat = spat_root; spat != Nullspat; spat = spat->spat_next) {
23 spat->spat_flags &= ~SPAT_USED;
36 for ( ; i <= max; i++) {
37 for (stab = stab_index[i]; stab; stab = stab->stab_next) {
41 if (str->str_ptr != Nullch)
42 str->str_ptr[0] = '\0';
43 if (stab->stab_array) {
44 aclear(stab->stab_array);
46 if (stab->stab_hash) {
47 hclear(stab->stab_hash);
59 str->str_pok = 0; /* invalidate pointer */
60 str->str_nok = 1; /* validate number */
74 GROWSTR(&(str->str_ptr), &(str->str_len), 24);
77 olderrno = errno; /* some Xenix systems wipe out errno here */
78 #if defined(scs) && defined(ns32000)
79 gcvt(str->str_nval,20,s);
82 if (str->str_nval == 0.0)
86 sprintf(s,"%.20g",str->str_nval);
92 warn("Use of uninitialized variable");
94 str->str_cur = s - str->str_ptr;
98 fprintf(stderr,"0x%lx ptr(%s)\n",str,str->str_ptr);
109 if (str->str_len && str->str_pok)
110 str->str_nval = atof(str->str_ptr);
113 fprintf(stderr,"Use of uninitialized variable in %s line %ld.\n",
114 filename,(long)line);
120 fprintf(stderr,"0x%lx num(%g)\n",str,str->str_nval);
122 return str->str_nval;
131 else if (sstr->str_nok)
132 str_numset(dstr,sstr->str_nval);
133 else if (sstr->str_pok)
134 str_nset(dstr,sstr->str_ptr,sstr->str_cur);
139 str_nset(str,ptr,len)
144 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
145 bcopy(ptr,str->str_ptr,len);
147 *(str->str_ptr+str->str_cur) = '\0';
148 str->str_nok = 0; /* invalidate number */
149 str->str_pok = 1; /* validate pointer */
161 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
162 bcopy(ptr,str->str_ptr,len+1);
164 str->str_nok = 0; /* invalidate number */
165 str->str_pok = 1; /* validate pointer */
168 str_chop(str,ptr) /* like set but assuming ptr is in str */
174 str->str_cur -= (ptr - str->str_ptr);
175 bcopy(ptr,str->str_ptr, str->str_cur + 1);
176 str->str_nok = 0; /* invalidate number */
177 str->str_pok = 1; /* validate pointer */
180 str_ncat(str,ptr,len)
187 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
188 bcopy(ptr,str->str_ptr+str->str_cur,len);
190 *(str->str_ptr+str->str_cur) = '\0';
191 str->str_nok = 0; /* invalidate number */
192 str->str_pok = 1; /* validate pointer */
201 if (!(sstr->str_pok))
204 str_ncat(dstr,sstr->str_ptr,sstr->str_cur);
218 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
219 bcopy(ptr,str->str_ptr+str->str_cur,len+1);
221 str->str_nok = 0; /* invalidate number */
222 str->str_pok = 1; /* validate pointer */
226 str_append_till(str,from,delim,keeplist)
238 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + len + 1);
239 str->str_nok = 0; /* invalidate number */
240 str->str_pok = 1; /* validate pointer */
241 to = str->str_ptr+str->str_cur;
242 for (; *from; from++,to++) {
243 if (*from == '\\' && from[1] && delim != '\\') {
245 if (from[1] == delim || from[1] == '\\')
250 else if (index(keeplist,from[1]))
255 else if (*from == delim)
260 str->str_cur = to - str->str_ptr;
272 freestrroot = str->str_link.str_next;
273 str->str_link.str_magic = Nullstab;
276 str = (STR *) safemalloc(sizeof(STR));
277 bzero((char*)str,sizeof(STR));
280 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
290 GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
293 /* make str point to what nstr did */
296 str_replace(str,nstr)
300 safefree(str->str_ptr);
301 str->str_ptr = nstr->str_ptr;
302 str->str_len = nstr->str_len;
303 str->str_cur = nstr->str_cur;
304 str->str_pok = nstr->str_pok;
305 if (str->str_nok = nstr->str_nok)
306 str->str_nval = nstr->str_nval;
307 safefree((char*)nstr);
317 str->str_ptr[0] = '\0';
321 str->str_link.str_next = freestrroot;
343 #ifdef STDSTDIO /* Here is some breathtakingly efficient cheating */
345 register char *bp; /* we're going to steal some values */
346 register int cnt; /* from the stdio struct and put EVERYTHING */
347 register STDCHAR *ptr; /* in the innermost loop into registers */
348 register char newline = record_separator;/* (assuming >= 6 registers) */
352 register int get_paragraph;
353 register char *oldbp;
355 if (get_paragraph = !newline) { /* yes, that's an assignment */
357 oldbp = Nullch; /* remember last \n position (none) */
359 cnt = fp->_cnt; /* get count into register */
360 str->str_nok = 0; /* invalidate number */
361 str->str_pok = 1; /* validate pointer */
362 if (str->str_len <= cnt) /* make sure we have the room */
363 GROWSTR(&(str->str_ptr), &(str->str_len), cnt+1);
364 bp = str->str_ptr; /* move these two too to registers */
368 while (--cnt >= 0) { /* this */ /* eat */
369 if ((*bp++ = *ptr++) == newline) /* really */ /* dust */
370 goto thats_all_folks; /* screams */ /* sed :-) */
373 fp->_cnt = cnt; /* deregisterize cnt and ptr */
375 i = _filbuf(fp); /* get more characters */
377 ptr = fp->_ptr; /* reregisterize cnt and ptr */
379 bpx = bp - str->str_ptr; /* prepare for possible relocation */
380 if (get_paragraph && oldbp)
381 obpx = oldbp - str->str_ptr;
382 GROWSTR(&(str->str_ptr), &(str->str_len), bpx + cnt + 2);
383 bp = str->str_ptr + bpx; /* reconstitute our pointer */
384 if (get_paragraph && oldbp)
385 oldbp = str->str_ptr + obpx;
387 if (i == newline) { /* all done for now? */
389 goto thats_all_folks;
391 else if (i == EOF) /* all done for ever? */
392 goto thats_really_all_folks;
393 *bp++ = i; /* now go back to screaming loop */
397 if (get_paragraph && bp - 1 != oldbp) {
398 oldbp = bp; /* remember where this newline was */
399 goto screamer; /* and go back to the fray */
401 thats_really_all_folks:
402 fp->_cnt = cnt; /* put these back or we're in trouble */
405 str->str_cur = bp - str->str_ptr; /* set length */
407 #else /* !STDSTDIO */ /* The big, slow, and stupid way */
409 static char buf[4192];
411 if (fgets(buf, sizeof buf, fp) != Nullch)
416 #endif /* STDSTDIO */
418 return str->str_cur ? str->str_ptr : Nullch;
427 register char *t = s;
428 char *envsave = envname;
433 if (*s == '\\' && s[1] == '\\') {
434 str_ncat(str, t, s++ - t);
437 else if (*s == '\\' && s[1] == '$') {
438 str_ncat(str, t, s++ - t);
441 else if (*s == '$' && s[1] && s[1] != '|') {
443 s = scanreg(s,tokenbuf);
444 str_cat(str,reg_get(tokenbuf));
464 str->str_nval += 1.0;
468 if (!str->str_pok || !*str->str_ptr) {
474 while (isalpha(*d)) d++;
475 while (isdigit(*d)) d++;
477 str_numset(str,atof(str->str_ptr) + 1.0); /* punt */
481 while (d >= str->str_ptr) {
491 *(d--) -= 'z' - 'a' + 1;
494 /* oh,oh, the number grew */
495 GROWSTR(&(str->str_ptr), &(str->str_len), str->str_cur + 2);
497 for (d = str->str_ptr + str->str_cur; d > str->str_ptr; d--)
512 str->str_nval -= 1.0;
517 str->str_nval = -1.0;
521 str_numset(str,atof(str->str_ptr) - 1.0);
524 /* make a string that will exist for the duration of the expression eval */
530 register STR *str = str_new(0);
531 static long tmps_size = -1;
533 str_sset(str,oldstr);
534 if (++tmps_max > tmps_size) {
535 tmps_size = tmps_max;
536 if (!(tmps_size & 127)) {
538 tmps_list = (STR**)saferealloc((char*)tmps_list,
539 (MEM_SIZE)((tmps_size + 128) * sizeof(STR*)) );
541 tmps_list = (STR**)safemalloc(128 * sizeof(char*));
544 tmps_list[tmps_max] = str;
552 register STR *str = str_new(0);
562 register STR *str = str_new(0);