1 /* $Header: dolist.c,v 3.0.1.1 89/10/26 23:11:51 lwall Locked $
3 * Copyright (c) 1989, Larry Wall
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.
9 * Revision 3.0.1.1 89/10/26 23:11:51 lwall
10 * patch1: split in a subroutine wrongly freed referenced arguments
11 * patch1: reverse didn't work
13 * Revision 3.0 89/10/18 15:11:02 lwall
23 do_match(str,arg,gimme,arglast)
29 register STR **st = stack->ary_array;
30 register SPAT *spat = arg[2].arg_ptr.arg_spat;
32 register int sp = arglast[0] + 1;
33 STR *srchstr = st[sp];
34 register char *s = str_get(st[sp]);
35 char *strend = s + st[sp]->str_cur;
47 fatal("panic: do_match");
48 if (spat->spat_flags & SPAT_USED) {
61 if (spat->spat_runtime) {
63 sp = eval(spat->spat_runtime,G_SCALAR,sp);
64 st = stack->ary_array;
65 t = str_get(tmpstr = st[sp--]);
69 deb("2.SPAT /%s/\n",t);
71 if (spat->spat_regexp)
72 regfree(spat->spat_regexp);
73 spat->spat_regexp = regcomp(t,t+tmpstr->str_cur,
74 spat->spat_flags & SPAT_FOLD,1);
75 if (!*spat->spat_regexp->precomp && lastspat)
77 if (spat->spat_flags & SPAT_KEEP) {
78 arg_free(spat->spat_runtime); /* it won't change, so */
79 spat->spat_runtime = Nullarg; /* no point compiling again */
81 if (!spat->spat_regexp->nparens)
82 gimme = G_SCALAR; /* accidental array context? */
83 if (regexec(spat->spat_regexp, s, strend, s, 0,
84 srchstr->str_pok & SP_STUDIED ? srchstr : Nullstr,
86 if (spat->spat_regexp->subbase)
94 str_sset(str,&str_no);
105 if (spat->spat_flags & SPAT_ONCE)
109 deb("2.SPAT %c%s%c\n",ch,spat->spat_regexp->precomp,ch);
112 if (!*spat->spat_regexp->precomp && lastspat)
116 if (hint < s || hint > strend)
117 fatal("panic: hint in do_match");
120 if (spat->spat_regexp->regback >= 0) {
121 s -= spat->spat_regexp->regback;
128 else if (spat->spat_short) {
129 if (spat->spat_flags & SPAT_SCANFIRST) {
130 if (srchstr->str_pok & SP_STUDIED) {
131 if (screamfirst[spat->spat_short->str_rare] < 0)
133 else if (!(s = screaminstr(srchstr,spat->spat_short)))
135 else if (spat->spat_flags & SPAT_ALL)
139 else if (!(s = fbminstr((unsigned char*)s,
140 (unsigned char*)strend, spat->spat_short)))
143 else if (spat->spat_flags & SPAT_ALL)
145 if (s && spat->spat_regexp->regback >= 0) {
146 ++spat->spat_short->str_u.str_useful;
147 s -= spat->spat_regexp->regback;
154 else if (!multiline && (*spat->spat_short->str_ptr != *s ||
155 bcmp(spat->spat_short->str_ptr, s, spat->spat_slen) ))
157 if (--spat->spat_short->str_u.str_useful < 0) {
158 str_free(spat->spat_short);
159 spat->spat_short = Nullstr; /* opt is being useless */
162 if (!spat->spat_regexp->nparens)
163 gimme = G_SCALAR; /* accidental array context? */
164 if (regexec(spat->spat_regexp, s, strend, t, 0,
165 srchstr->str_pok & SP_STUDIED ? srchstr : Nullstr,
167 if (spat->spat_regexp->subbase)
170 if (spat->spat_flags & SPAT_ONCE)
171 spat->spat_flags |= SPAT_USED;
175 if (gimme == G_ARRAY)
177 str_sset(str,&str_no);
186 if (gimme == G_ARRAY) {
189 iters = spat->spat_regexp->nparens;
190 if (sp + iters >= stack->ary_max) {
191 astore(stack,sp + iters, Nullstr);
192 st = stack->ary_array; /* possibly realloced */
195 for (i = 1; i <= iters; i++) {
196 st[++sp] = str_static(&str_no);
197 if (s = spat->spat_regexp->startp[i]) {
198 len = spat->spat_regexp->endp[i] - s;
200 str_nset(st[sp],s,len);
206 str_sset(str,&str_yes);
213 ++spat->spat_short->str_u.str_useful;
215 if (spat->spat_flags & SPAT_ONCE)
216 spat->spat_flags |= SPAT_USED;
220 tmps = spat->spat_regexp->subbase = nsavestr(t,strend-t);
221 tmps = spat->spat_regexp->startp[0] = tmps + (s - t);
222 spat->spat_regexp->endp[0] = tmps + spat->spat_short->str_cur;
225 str_sset(str,&str_yes);
231 ++spat->spat_short->str_u.str_useful;
232 if (gimme == G_ARRAY)
234 str_sset(str,&str_no);
241 do_split(str,spat,limit,gimme,arglast)
248 register ARRAY *ary = stack;
249 STR **st = ary->ary_array;
250 register int sp = arglast[0] + 1;
251 register char *s = str_get(st[sp]);
252 char *strend = s + st[sp--]->str_cur;
258 int origlimit = limit;
262 fatal("panic: do_split");
263 else if (spat->spat_runtime) {
265 sp = eval(spat->spat_runtime,G_SCALAR,sp);
266 st = stack->ary_array;
267 m = str_get(dstr = st[sp--]);
269 if (!dstr->str_cur || (*m == ' ' && dstr->str_cur == 1)) {
270 str_set(dstr,"\\s+");
272 spat->spat_flags |= SPAT_SKIPWHITE;
274 if (spat->spat_regexp)
275 regfree(spat->spat_regexp);
276 spat->spat_regexp = regcomp(m,m+dstr->str_cur,
277 spat->spat_flags & SPAT_FOLD,1);
278 if (spat->spat_flags & SPAT_KEEP ||
279 (spat->spat_runtime->arg_type == O_ITEM &&
280 (spat->spat_runtime[1].arg_type & A_MASK) == A_SINGLE) ) {
281 arg_free(spat->spat_runtime); /* it won't change, so */
282 spat->spat_runtime = Nullarg; /* no point compiling again */
287 deb("2.SPAT /%s/\n",spat->spat_regexp->precomp);
290 ary = stab_xarray(spat->spat_repl[1].arg_ptr.arg_stab);
291 if (ary && ((ary->ary_flags & ARF_REAL) || gimme != G_ARRAY)) {
293 if (!(ary->ary_flags & ARF_REAL)) {
294 ary->ary_flags |= ARF_REAL;
295 for (i = ary->ary_fill; i >= 0; i--)
296 ary->ary_array[i] = Nullstr; /* don't free mere refs */
299 sp = -1; /* temporarily switch stacks */
304 if (spat->spat_flags & SPAT_SKIPWHITE) {
310 if (spat->spat_short) {
311 i = spat->spat_short->str_cur;
313 i = *spat->spat_short->str_ptr;
315 for (m = s; m < strend && *m != i; m++) ;
319 dstr = Str_new(30,m-s);
321 dstr = str_static(&str_undef);
322 str_nset(dstr,s,m-s);
323 (void)astore(ary, ++sp, dstr);
329 while (s < strend && --limit &&
330 (m=fbminstr((unsigned char*)s, (unsigned char*)strend,
335 dstr = Str_new(31,m-s);
337 dstr = str_static(&str_undef);
338 str_nset(dstr,s,m-s);
339 (void)astore(ary, ++sp, dstr);
345 while (s < strend && --limit &&
346 regexec(spat->spat_regexp, s, strend, orig, 1, Nullstr, TRUE) ) {
347 if (spat->spat_regexp->subbase
348 && spat->spat_regexp->subbase != orig) {
351 orig = spat->spat_regexp->subbase;
353 strend = s + (strend - m);
355 m = spat->spat_regexp->startp[0];
357 dstr = Str_new(32,m-s);
359 dstr = str_static(&str_undef);
360 str_nset(dstr,s,m-s);
361 (void)astore(ary, ++sp, dstr);
362 if (spat->spat_regexp->nparens) {
363 for (i = 1; i <= spat->spat_regexp->nparens; i++) {
364 s = spat->spat_regexp->startp[i];
365 m = spat->spat_regexp->endp[i];
367 dstr = Str_new(33,m-s);
369 dstr = str_static(&str_undef);
370 str_nset(dstr,s,m-s);
371 (void)astore(ary, ++sp, dstr);
374 s = spat->spat_regexp->endp[0];
380 iters = sp - arglast[0];
383 if (s < strend || origlimit) { /* keep field after final delim? */
385 dstr = Str_new(34,strend-s);
387 dstr = str_static(&str_undef);
388 str_nset(dstr,s,strend-s);
389 (void)astore(ary, ++sp, dstr);
394 while (iters > 0 && ary->ary_array[sp]->str_cur == 0)
401 zaps = str_get(afetch(ary,sp,FALSE));
405 while (iters > 0 && (!zapb)) {
408 zaps = str_get(afetch(ary,iters-1,FALSE));
416 if (gimme == G_ARRAY) {
418 astore(stack, arglast[0] + 1 + sp, Nullstr);
419 Copy(ary->ary_array, stack->ary_array + arglast[0] + 1, sp, STR*);
420 return arglast[0] + sp;
424 if (gimme == G_ARRAY)
428 str_numset(str,(double)iters);
435 do_unpack(str,gimme,arglast)
440 STR **st = stack->ary_array;
441 register int sp = arglast[0] + 1;
442 register char *pat = str_get(st[sp++]);
443 register char *s = str_get(st[sp]);
444 char *strend = s + st[sp--]->str_cur;
445 register char *patend = pat + st[sp]->str_cur;
449 /* These must not be in registers: */
454 unsigned char auchar;
455 unsigned short aushort;
457 unsigned long aulong;
460 if (gimme != G_ARRAY) {
461 str_sset(str,&str_undef);
467 while (pat < patend) {
471 while (isdigit(*pat))
484 if (s + len > strend)
486 str = Str_new(35,len);
489 if (datumtype == 'A') {
490 aptr = s; /* borrow register */
491 s = str->str_ptr + len - 1;
492 while (s >= str->str_ptr && (!*s || isspace(*s)))
495 str->str_cur = s - str->str_ptr;
496 s = aptr; /* unborrow register */
498 (void)astore(stack, ++sp, str_2static(str));
502 if (s + sizeof(char) > strend)
505 bcopy(s,(char*)&achar,sizeof(char));
510 if (aint >= 128) /* fake up signed chars */
512 str_numset(str,(double)aint);
513 (void)astore(stack, ++sp, str_2static(str));
518 if (s + sizeof(unsigned char) > strend)
521 bcopy(s,(char*)&auchar,sizeof(unsigned char));
522 s += sizeof(unsigned char);
525 auint = auchar; /* some can't cast uchar to double */
526 str_numset(str,(double)auint);
527 (void)astore(stack, ++sp, str_2static(str));
532 if (s + sizeof(short) > strend)
535 bcopy(s,(char*)&ashort,sizeof(short));
539 str_numset(str,(double)ashort);
540 (void)astore(stack, ++sp, str_2static(str));
546 if (s + sizeof(unsigned short) > strend)
549 bcopy(s,(char*)&aushort,sizeof(unsigned short));
550 s += sizeof(unsigned short);
554 if (datumtype == 'n')
555 aushort = ntohs(aushort);
557 str_numset(str,(double)aushort);
558 (void)astore(stack, ++sp, str_2static(str));
563 if (s + sizeof(int) > strend)
566 bcopy(s,(char*)&aint,sizeof(int));
570 str_numset(str,(double)aint);
571 (void)astore(stack, ++sp, str_2static(str));
576 if (s + sizeof(unsigned int) > strend)
579 bcopy(s,(char*)&auint,sizeof(unsigned int));
580 s += sizeof(unsigned int);
583 str_numset(str,(double)auint);
584 (void)astore(stack, ++sp, str_2static(str));
589 if (s + sizeof(long) > strend)
592 bcopy(s,(char*)&along,sizeof(long));
596 str_numset(str,(double)along);
597 (void)astore(stack, ++sp, str_2static(str));
603 if (s + sizeof(unsigned long) > strend)
606 bcopy(s,(char*)&aulong,sizeof(unsigned long));
607 s += sizeof(unsigned long);
611 if (datumtype == 'N')
612 aulong = ntohl(aulong);
614 str_numset(str,(double)aulong);
615 (void)astore(stack, ++sp, str_2static(str));
620 if (s + sizeof(char*) > strend)
623 bcopy(s,(char*)&aptr,sizeof(char*));
629 (void)astore(stack, ++sp, str_2static(str));
638 do_slice(stab,numarray,lval,gimme,arglast)
645 register STR **st = stack->ary_array;
646 register int sp = arglast[1];
647 register int max = arglast[2];
650 register int magic = 0;
652 if (lval && !numarray) {
655 else if (stab == sigstab)
658 else if (stab_hash(stab)->tbl_dbm)
660 #endif /* SOME_DBM */
663 if (gimme == G_ARRAY) {
667 st[sp-1] = afetch(stab_array(stab),(int)str_gnum(st[sp]),
677 tmps = str_get(st[sp]);
678 len = st[sp]->str_cur;
679 st[sp-1] = hfetch(stab_hash(stab),tmps,len, lval);
681 str_magic(st[sp-1],stab,magic,tmps,len);
692 st[sp] = afetch(stab_array(stab),(int)str_gnum(st[max]), lval);
698 tmps = str_get(st[max]);
699 len = st[max]->str_cur;
700 st[sp] = hfetch(stab_hash(stab),tmps,len, lval);
702 str_magic(st[sp],stab,magic,tmps,len);
712 do_grep(arg,str,gimme,arglast)
718 STR **st = stack->ary_array;
719 register STR **dst = &st[arglast[1]];
720 register STR **src = dst + 1;
721 register int sp = arglast[2];
722 register int i = sp - arglast[1];
723 int oldsave = savestack->ary_fill;
725 savesptr(&stab_val(defstab));
726 if ((arg[1].arg_type & A_MASK) != A_EXPR)
728 arg = arg[1].arg_ptr.arg_arg;
730 stab_val(defstab) = *src;
731 (void)eval(arg,G_SCALAR,sp);
732 if (str_true(st[sp+1]))
736 restorelist(oldsave);
737 if (gimme != G_ARRAY) {
738 str_sset(str,&str_undef);
740 st[arglast[0]+1] = str;
743 return arglast[0] + (dst - &st[arglast[1]]);
747 do_reverse(str,gimme,arglast)
752 STR **st = stack->ary_array;
753 register STR **up = &st[arglast[1]];
754 register STR **down = &st[arglast[2]];
755 register int i = arglast[2] - arglast[1];
757 if (gimme != G_ARRAY) {
758 str_sset(str,&str_undef);
760 st[arglast[0]+1] = str;
768 i = arglast[2] - arglast[1];
769 Copy(down+1,up,i/2,STR*);
770 return arglast[2] - 1;
774 static STAB *firststab = Nullstab;
775 static STAB *secondstab = Nullstab;
778 do_sort(str,stab,gimme,arglast)
784 STR **st = stack->ary_array;
787 register int max = arglast[2] - sp;
794 static ARRAY *sortstack = Null(ARRAY*);
796 if (gimme != G_ARRAY) {
797 str_sset(str,&str_undef);
803 for (i = 0; i < max; i++) {
804 if ((*up = up[1]) && !(*up)->str_pok)
810 if (stab_sub(stab) && (sortcmd = stab_sub(stab)->cmd)) {
811 int oldtmps_base = tmps_base;
814 sortstack = anew(Nullstab);
815 sortstack->ary_flags = 0;
819 tmps_base = tmps_max;
821 firststab = stabent("a",TRUE);
822 secondstab = stabent("b",TRUE);
824 oldfirst = stab_val(firststab);
825 oldsecond = stab_val(secondstab);
827 qsort((char*)(st+sp+1),max,sizeof(STR*),sortsub);
829 qsort(Nullch,max,sizeof(STR*),sortsub);
831 stab_val(firststab) = oldfirst;
832 stab_val(secondstab) = oldsecond;
833 tmps_base = oldtmps_base;
838 qsort((char*)(st+sp+1),max,sizeof(STR*),sortcmp);
841 up = &st[arglast[1]];
842 while (max > 0 && !*up)
856 stab_val(firststab) = *str1;
857 stab_val(secondstab) = *str2;
858 cmd_exec(sortcmd,G_SCALAR,-1);
859 return (int)str_gnum(*stack->ary_array);
866 register STR *str1 = *strp1;
867 register STR *str2 = *strp2;
875 if (str1->str_cur < str2->str_cur) {
876 if (retval = memcmp(str1->str_ptr, str2->str_ptr, str1->str_cur))
881 else if (retval = memcmp(str1->str_ptr, str2->str_ptr, str2->str_cur))
883 else if (str1->str_cur == str2->str_cur)
890 do_range(gimme,arglast)
894 STR **st = stack->ary_array;
895 register int sp = arglast[0];
896 register int i = (int)str_gnum(st[sp+1]);
897 register ARRAY *ary = stack;
899 int max = (int)str_gnum(st[sp+2]);
901 if (gimme != G_ARRAY)
902 fatal("panic: do_range");
905 (void)astore(ary, ++sp, str = str_static(&str_no));
906 str_numset(str,(double)i++);
912 do_tms(str,gimme,arglast)
917 STR **st = stack->ary_array;
918 register int sp = arglast[0];
920 if (gimme != G_ARRAY) {
921 str_sset(str,&str_undef);
926 (void)times(×buf);
933 (void)astore(stack,++sp,
934 str_2static(str_nmake(((double)timesbuf.tms_utime)/HZ)));
935 (void)astore(stack,++sp,
936 str_2static(str_nmake(((double)timesbuf.tms_stime)/HZ)));
937 (void)astore(stack,++sp,
938 str_2static(str_nmake(((double)timesbuf.tms_cutime)/HZ)));
939 (void)astore(stack,++sp,
940 str_2static(str_nmake(((double)timesbuf.tms_cstime)/HZ)));
942 (void)astore(stack,++sp,
943 str_2static(str_nmake(0.0)));
949 do_time(str,tmbuf,gimme,arglast)
955 register ARRAY *ary = stack;
956 STR **st = ary->ary_array;
957 register int sp = arglast[0];
959 if (!tmbuf || gimme != G_ARRAY) {
960 str_sset(str,&str_undef);
965 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_sec)));
966 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_min)));
967 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_hour)));
968 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_mday)));
969 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_mon)));
970 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_year)));
971 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_wday)));
972 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_yday)));
973 (void)astore(ary,++sp,str_2static(str_nmake((double)tmbuf->tm_isdst)));
978 do_kv(str,hash,kv,gimme,arglast)
985 register ARRAY *ary = stack;
986 STR **st = ary->ary_array;
987 register int sp = arglast[0];
989 register HENT *entry;
992 int dokeys = (kv == O_KEYS || kv == O_HASH);
993 int dovalues = (kv == O_VALUES || kv == O_HASH);
995 if (gimme != G_ARRAY) {
996 str_sset(str,&str_undef);
1001 (void)hiterinit(hash);
1002 while (entry = hiternext(hash)) {
1004 tmps = hiterkey(entry,&i);
1005 (void)astore(ary,++sp,str_2static(str_make(tmps,i)));
1008 tmpstr = Str_new(45,0);
1011 sprintf(buf,"%d%%%d=%d\n",entry->hent_hash,
1012 hash->tbl_max+1,entry->hent_hash & hash->tbl_max);
1013 str_set(tmpstr,buf);
1017 str_sset(tmpstr,hiterval(hash,entry));
1018 (void)astore(ary,++sp,str_2static(tmpstr));
1025 do_each(str,hash,gimme,arglast)
1031 STR **st = stack->ary_array;
1032 register int sp = arglast[0];
1033 static STR *mystrk = Nullstr;
1034 HENT *entry = hiternext(hash);
1044 if (gimme == G_ARRAY) {
1045 tmps = hiterkey(entry, &i);
1046 st[++sp] = mystrk = str_make(tmps,i);
1049 str_sset(str,hiterval(hash,entry));