1 /* This file is part of the Zebra server.
2 Copyright (C) 2004-2013 Index Data
3
4 Zebra is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
7 version.
8
9 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17
18 */
19
20 #if HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23 #include <stdio.h>
24 #include <assert.h>
25 #include <stdlib.h>
26 #include <string.h>
27
28 #include <yaz/log.h>
29 #include <yaz/oid_db.h>
30 #include <idzebra/data1.h>
31 #include <idzebra/recctrl.h>
32 #include <zebra_xpath.h>
33 #include <d1_absyn.h>
34
35 #define D1_MAX_NESTING 128
36
37 struct data1_hash_table {
38 NMEM nmem;
39 int size;
40 struct data1_hash_entry **ar;
41 };
42
43 struct data1_hash_entry {
44 void *clientData;
45 char *str;
46 struct data1_hash_entry *next;
47 };
48
data1_hash_calc(struct data1_hash_table * ht,const char * str)49 unsigned data1_hash_calc(struct data1_hash_table *ht, const char *str)
50 {
51 unsigned v = 0;
52 assert(str);
53 while (*str)
54 {
55 if (*str >= 'a' && *str <= 'z')
56 v = v*65509 + *str -'a'+10;
57 else if (*str >= 'A' && *str <= 'Z')
58 v = v*65509 + *str -'A'+10;
59 else if (*str >= '0' && *str <= '9')
60 v = v*65509 + *str -'0';
61 str++;
62 }
63 return v % ht->size;
64 }
65
data1_hash_open(int size,NMEM nmem)66 struct data1_hash_table *data1_hash_open(int size, NMEM nmem)
67 {
68 int i;
69 struct data1_hash_table *ht = nmem_malloc(nmem, sizeof(*ht));
70 ht->nmem = nmem;
71 ht->size = size;
72 if (ht->size <= 0)
73 ht->size = 29;
74 ht->ar = nmem_malloc(nmem, sizeof(*ht->ar) * ht->size);
75 for (i = 0; i<ht->size; i++)
76 ht->ar[i] = 0;
77 return ht;
78 }
79
data1_hash_insert(struct data1_hash_table * ht,const char * str,void * clientData,int copy)80 void data1_hash_insert(struct data1_hash_table *ht, const char *str,
81 void *clientData, int copy)
82 {
83 char *dstr = copy ? nmem_strdup(ht->nmem, str) : (char*) str;
84 if (strchr(str, '?') || strchr(str, '.'))
85 {
86 int i;
87 for (i = 0; i<ht->size; i++)
88 {
89 struct data1_hash_entry **he = &ht->ar[i];
90 for (; *he && strcmp(str, (*he)->str); he = &(*he)->next)
91 ;
92 if (!*he)
93 {
94 *he = nmem_malloc(ht->nmem, sizeof(**he));
95 (*he)->str = dstr;
96 (*he)->next = 0;
97 }
98 (*he)->clientData = clientData;
99 }
100 }
101 else
102 {
103 struct data1_hash_entry **he = &ht->ar[data1_hash_calc(ht, str)];
104 for (; *he && strcmp(str, (*he)->str); he = &(*he)->next)
105 ;
106 if (!*he)
107 {
108 *he = nmem_malloc(ht->nmem, sizeof(**he));
109 (*he)->str = dstr;
110 (*he)->next = 0;
111 }
112 (*he)->clientData = clientData;
113 }
114 }
115
data1_hash_lookup(struct data1_hash_table * ht,const char * str)116 void *data1_hash_lookup(struct data1_hash_table *ht, const char *str)
117 {
118 struct data1_hash_entry **he = &ht->ar[data1_hash_calc(ht, str)];
119
120 for (; *he && yaz_matchstr(str, (*he)->str); he = &(*he)->next)
121 ;
122 if (*he)
123 return (*he)->clientData;
124 return 0;
125 }
126
127 struct data1_systag {
128 char *name;
129 char *value;
130 struct data1_systag *next;
131 };
132
133 struct data1_absyn_cache_info
134 {
135 char *name;
136 data1_absyn *absyn;
137 data1_absyn_cache next;
138 };
139
140 struct data1_attset_cache_info
141 {
142 char *name;
143 data1_attset *attset;
144 data1_attset_cache next;
145 };
146
data1_mk_element(data1_handle dh)147 data1_element *data1_mk_element(data1_handle dh)
148 {
149 data1_element *e = nmem_malloc(data1_nmem_get(dh), sizeof(*e));
150 e->name = 0;
151 e->tag = 0;
152 e->termlists = 0;
153 e->next = e->children = 0;
154 e->sub_name = 0;
155 e->hash = 0;
156 return e;
157 }
158
data1_absyn_search(data1_handle dh,const char * name)159 data1_absyn *data1_absyn_search (data1_handle dh, const char *name)
160 {
161 data1_absyn_cache p = *data1_absyn_cache_get (dh);
162
163 while (p)
164 {
165 if (!yaz_matchstr (name, p->name))
166 return p->absyn;
167 p = p->next;
168 }
169 return 0;
170 }
171 /* *ostrich*
172 We need to destroy DFAs, in xp_element (xelm) definitions
173 pop, 2002-12-13
174 */
175
data1_absyn_destroy(data1_handle dh)176 void data1_absyn_destroy (data1_handle dh)
177 {
178 data1_absyn_cache p = *data1_absyn_cache_get (dh);
179
180 while (p)
181 {
182 data1_absyn *abs = p->absyn;
183 if (abs)
184 {
185 data1_xpelement *xpe = abs->xp_elements;
186 while (xpe) {
187 yaz_log (YLOG_DEBUG,"Destroy xp element %s",xpe->xpath_expr);
188 if (xpe->dfa)
189 dfa_delete (&xpe->dfa);
190 xpe = xpe->next;
191 }
192 }
193 p = p->next;
194 }
195 }
196
197
data1_absyn_trav(data1_handle dh,void * handle,void (* fh)(data1_handle dh,void * h,data1_absyn * a))198 void data1_absyn_trav (data1_handle dh, void *handle,
199 void (*fh)(data1_handle dh, void *h, data1_absyn *a))
200 {
201 data1_absyn_cache p = *data1_absyn_cache_get (dh);
202
203 while (p)
204 {
205 (*fh)(dh, handle, p->absyn);
206 p = p->next;
207 }
208 }
209
210 static data1_absyn *data1_read_absyn(data1_handle dh, const char *file,
211 enum DATA1_XPATH_INDEXING en);
212
data1_absyn_add(data1_handle dh,const char * name,enum DATA1_XPATH_INDEXING en)213 static data1_absyn *data1_absyn_add(data1_handle dh, const char *name,
214 enum DATA1_XPATH_INDEXING en)
215 {
216 char fname[512];
217 NMEM mem = data1_nmem_get (dh);
218
219 data1_absyn_cache p = (data1_absyn_cache)nmem_malloc (mem, sizeof(*p));
220 data1_absyn_cache *pp = data1_absyn_cache_get (dh);
221
222 sprintf(fname, "%.500s.abs", name);
223 p->absyn = data1_read_absyn(dh, fname, en);
224 p->name = nmem_strdup(mem, name);
225 p->next = *pp;
226 *pp = p;
227 return p->absyn;
228 }
229
data1_get_absyn(data1_handle dh,const char * name,enum DATA1_XPATH_INDEXING en)230 data1_absyn *data1_get_absyn (data1_handle dh, const char *name,
231 enum DATA1_XPATH_INDEXING en)
232 {
233 data1_absyn *absyn;
234
235 if (!(absyn = data1_absyn_search (dh, name)))
236 absyn = data1_absyn_add (dh, name, en);
237 return absyn;
238 }
239
data1_attset_search_name(data1_handle dh,const char * name)240 data1_attset *data1_attset_search_name (data1_handle dh, const char *name)
241 {
242 data1_attset_cache p = *data1_attset_cache_get (dh);
243
244 while (p)
245 {
246 if (!yaz_matchstr (name, p->name))
247 return p->attset;
248 p = p->next;
249 }
250 return 0;
251 }
252
data1_attset_search_id(data1_handle dh,const Odr_oid * oid)253 data1_attset *data1_attset_search_id(data1_handle dh, const Odr_oid *oid)
254 {
255 data1_attset_cache p = *data1_attset_cache_get (dh);
256
257 while (p)
258 {
259 if (p->attset->oid && !oid_oidcmp(oid, p->attset->oid))
260 return p->attset;
261 p = p->next;
262 }
263 return 0;
264 }
265
data1_attset_add(data1_handle dh,const char * name)266 data1_attset *data1_attset_add (data1_handle dh, const char *name)
267 {
268 NMEM mem = data1_nmem_get (dh);
269 data1_attset *attset;
270
271 attset = data1_read_attset (dh, name);
272 if (!attset)
273 yaz_log (YLOG_WARN|YLOG_ERRNO, "Couldn't load attribute set %s", name);
274 else
275 {
276 data1_attset_cache p = (data1_attset_cache)
277 nmem_malloc (mem, sizeof(*p));
278 data1_attset_cache *pp = data1_attset_cache_get (dh);
279
280 attset->name = p->name = nmem_strdup(mem, name);
281 p->attset = attset;
282 p->next = *pp;
283 *pp = p;
284 }
285 return attset;
286 }
287
data1_get_attset(data1_handle dh,const char * name)288 data1_attset *data1_get_attset (data1_handle dh, const char *name)
289 {
290 data1_attset *attset;
291
292 if (!(attset = data1_attset_search_name (dh, name)))
293 attset = data1_attset_add (dh, name);
294 return attset;
295 }
296
data1_getesetbyname(data1_handle dh,data1_absyn * a,const char * name)297 data1_esetname *data1_getesetbyname(data1_handle dh, data1_absyn *a,
298 const char *name)
299 {
300 data1_esetname *r;
301
302 for (r = a->esetnames; r; r = r->next)
303 if (!data1_matchstr(r->name, name))
304 return r;
305 return 0;
306 }
307
308 /* we have multiple versions of data1_getelementbyname */
309 #define DATA1_GETELEMENTBYTAGNAME_VERSION 1
310
data1_getelementbytagname(data1_handle dh,data1_absyn * abs,data1_element * parent,const char * tagname)311 data1_element *data1_getelementbytagname (data1_handle dh, data1_absyn *abs,
312 data1_element *parent,
313 const char *tagname)
314 {
315 data1_element *r;
316 struct data1_hash_table *ht;
317
318 /* It's now possible to have a data1 tree with no abstract syntax */
319 if ( !abs )
320 return 0;
321
322 if (!parent)
323 r = abs->main_elements;
324 else
325 r = parent->children;
326
327 #if DATA1_GETELEMENTBYTAGNAME_VERSION==1
328 /* using hash search */
329 if (!r)
330 return 0;
331
332 ht = r->hash;
333 if (!ht)
334 {
335 /* build hash table (the first time) */
336 ht = r->hash = data1_hash_open(29, data1_nmem_get(dh));
337 for (; r; r = r->next)
338 {
339 data1_name *n;
340
341 for (n = r->tag->names; n; n = n->next)
342 data1_hash_insert(ht, n->name, r, 0);
343 }
344 }
345 return data1_hash_lookup(ht, tagname);
346 #else
347 /* using linear search */
348 for (; r; r = r->next)
349 {
350 data1_name *n;
351
352 for (n = r->tag->names; n; n = n->next)
353 if (!data1_matchstr(tagname, n->name))
354 return r;
355 }
356 return 0;
357 #endif
358 }
359
data1_getelementbyname(data1_handle dh,data1_absyn * absyn,const char * name)360 data1_element *data1_getelementbyname (data1_handle dh, data1_absyn *absyn,
361 const char *name)
362 {
363 data1_element *r;
364
365 /* It's now possible to have a data1 tree with no abstract syntax */
366 if ( !absyn )
367 return 0;
368 for (r = absyn->main_elements; r; r = r->next)
369 if (!data1_matchstr(r->name, name))
370 return r;
371 return 0;
372 }
373
374
fix_element_ref(data1_handle dh,data1_absyn * absyn,data1_element * e)375 void fix_element_ref (data1_handle dh, data1_absyn *absyn, data1_element *e)
376 {
377 /* It's now possible to have a data1 tree with no abstract syntax */
378 if ( !absyn )
379 return;
380
381 for (; e; e = e->next)
382 {
383 if (!e->sub_name)
384 {
385 if (e->children)
386 fix_element_ref (dh, absyn, e->children);
387 }
388 else
389 {
390 data1_sub_elements *sub_e = absyn->sub_elements;
391 while (sub_e && strcmp (e->sub_name, sub_e->name))
392 sub_e = sub_e->next;
393 if (sub_e)
394 e->children = sub_e->elements;
395 else
396 yaz_log (YLOG_WARN, "Unresolved reference to sub-elements %s",
397 e->sub_name);
398 }
399 }
400 }
401 /* *ostrich*
402
403 New function, a bit dummy now... I've seen it in zrpn.c... We should build
404 more clever regexps...
405
406
407 //a -> ^a/.*$
408 //a/b -> ^b/a/.*$
409 /a -> ^a/$
410 /a/b -> ^b/a/$
411
412 / -> none
413
414 pop, 2002-12-13
415
416 Now [] predicates are supported
417
418 pop, 2003-01-17
419
420 */
421
mk_xpath_regexp(data1_handle dh,const char * expr)422 static const char * mk_xpath_regexp (data1_handle dh, const char *expr)
423 {
424 const char *p = expr;
425 int abs = 1;
426 int e = 0;
427 char *stack[32];
428 char *res_p, *res = 0;
429 size_t res_size = 1;
430
431 if (*p != '/')
432 return ("");
433 p++;
434 if (*p == '/')
435 {
436 abs =0;
437 p++;
438 }
439 while (*p)
440 {
441 int is_predicate = 0;
442 char *s;
443 int i, j;
444 for (i = 0; *p && !strchr("/",*p); i++, p++)
445 ;
446 res_size += (i+3); /* we'll add / between later .. */
447 stack[e] = (char *) nmem_malloc(data1_nmem_get(dh), i+1);
448 s = stack[e];
449 for (j = 0; j < i; j++)
450 {
451 const char *pp = p-i+j;
452 if (*pp == '[')
453 is_predicate=1;
454 else if (*pp == ']')
455 is_predicate=0;
456 else
457 {
458 if (!is_predicate) {
459 if (*pp == '*')
460 *s++ = '.';
461 *s++ = *pp;
462 }
463 }
464 }
465 *s = 0;
466 e++;
467 if (*p)
468 p++;
469 }
470 res_p = res = nmem_malloc(data1_nmem_get(dh), res_size + 10);
471
472 if (stack[e-1][0] == '@') /* path/@attr spec (leaf is attribute) */
473 strcpy(res_p, "/");
474 else
475 strcpy(res_p, "[^@]*/"); /* path .. (index all cdata below it) */
476 res_p = res_p + strlen(res_p);
477 while (--e >= 0) {
478 sprintf(res_p, "%s/", stack[e]);
479 res_p += strlen(stack[e]) + 1;
480 }
481 if (!abs)
482 {
483 sprintf(res_p, ".*");
484 res_p += 2;
485 }
486 sprintf (res_p, "$");
487 res_p++;
488 yaz_log(YLOG_DEBUG, "Got regexp: %s", res);
489 return res;
490 }
491
parse_termlists(data1_handle dh,data1_termlist *** tpp,char * cp,const char * file,int lineno,const char * element_name,data1_absyn * res,int xpelement,data1_attset * attset)492 static int parse_termlists(data1_handle dh, data1_termlist ***tpp,
493 char *cp, const char *file, int lineno,
494 const char *element_name, data1_absyn *res,
495 int xpelement,
496 data1_attset *attset)
497 {
498 data1_termlist **tp = *tpp;
499 while(1)
500 {
501 char attname[512], structure[512];
502 char *source;
503 int r, i;
504 int level = 0;
505 structure[0] = '\0';
506 for (i = 0; cp[i] && i<sizeof(attname)-1; i++)
507 if (strchr(":,", cp[i]))
508 break;
509 else
510 attname[i] = cp[i];
511 if (i == 0)
512 {
513 if (*cp)
514 yaz_log(YLOG_WARN,
515 "%s:%d: Syntax error in termlistspec '%s'",
516 file, lineno, cp);
517 break;
518 }
519 attname[i] = '\0';
520 r = 1;
521 cp += i;
522 if (*cp == ':')
523 cp++;
524
525 for (i = 0; cp[i] && i<sizeof(structure)-1; i++)
526 if (level == 0 && strchr(",", cp[i]))
527 break;
528 else
529 {
530 structure[i] = cp[i];
531 if (cp[i] == '(')
532 level++;
533 else if (cp[i] == ')')
534 level--;
535 }
536 structure[i] = '\0';
537 if (i)
538 r = 2;
539 cp += i;
540 if (*cp)
541 cp++; /* skip , */
542
543 *tp = (data1_termlist *)
544 nmem_malloc(data1_nmem_get(dh), sizeof(**tp));
545 (*tp)->next = 0;
546
547 if (*attname == '!')
548 {
549 if (!xpelement && element_name)
550 strcpy(attname, element_name);
551 else if (xpelement)
552 strcpy(attname, ZEBRA_XPATH_CDATA);
553 }
554 if (attset)
555 {
556 if (!data1_getattbyname(dh, attset, attname))
557 {
558 yaz_log(YLOG_WARN, "Index '%s' not found in attset(s)",
559 attname);
560 }
561 }
562
563 (*tp)->index_name = nmem_strdup(data1_nmem_get(dh), attname);
564 assert (*(*tp)->index_name != '!');
565 if (r == 2 && (source = strchr(structure, ':')))
566 *source++ = '\0'; /* cut off structure .. */
567 else
568 source = "data"; /* ok: default is leaf data */
569 (*tp)->source = (char *)
570 nmem_strdup (data1_nmem_get (dh), source);
571
572 if (r < 2) /* is the structure qualified? */
573 (*tp)->structure = "w";
574 else
575 (*tp)->structure = (char *)
576 nmem_strdup (data1_nmem_get (dh), structure);
577 tp = &(*tp)->next;
578 }
579
580 *tpp = tp;
581 return 0;
582 }
583
584 /* quinn
585 * Converts a 'melm' field[$subfield] pattern to a simple xpath
586 */
melm2xpath(char * melm,char * buf)587 static int melm2xpath(char *melm, char *buf)
588 {
589 char *dollar;
590 char *field = melm;
591 char *subfield;
592 char *fieldtype;
593 if ((dollar = strchr(melm, '$'))) {
594 *dollar = '\0';
595 subfield = ++dollar;
596 } else
597 subfield = "";
598 if (field[0] == '0' && field[1] == '0')
599 fieldtype = "controlfield";
600 else
601 fieldtype = "datafield";
602 sprintf(buf, "/*/%s[@tag=\"%s\"]", fieldtype, field);
603 if (*subfield)
604 sprintf(buf + strlen(buf), "/subfield[@code=\"%s\"]", subfield);
605 else if (field[0] != '0' || field[1] != '0')
606 strcat(buf, "/subfield");
607 yaz_log(YLOG_DEBUG, "Created xpath: '%s'", buf);
608 return 0;
609 }
610
data1_systag_lookup(data1_absyn * absyn,const char * tag,const char * default_value)611 const char *data1_systag_lookup(data1_absyn *absyn, const char *tag,
612 const char *default_value)
613 {
614 struct data1_systag *p = absyn->systags;
615 for (; p; p = p->next)
616 if (!strcmp(p->name, tag))
617 return p->value;
618 return default_value;
619 }
620
621 #define l_isspace(c) ((c) == '\t' || (c) == ' ' || (c) == '\n' || (c) == '\r')
622
read_absyn_line(FILE * f,int * lineno,char * line,int len,char * argv[],int num)623 int read_absyn_line(FILE *f, int *lineno, char *line, int len,
624 char *argv[], int num)
625 {
626 char *p;
627 int argc;
628 int quoted = 0;
629
630 while ((p = fgets(line, len, f)))
631 {
632 (*lineno)++;
633 while (*p && l_isspace(*p))
634 p++;
635 if (*p && *p != '#')
636 break;
637 }
638 if (!p)
639 return 0;
640
641 for (argc = 0; *p ; argc++)
642 {
643 if (*p == '#') /* trailing comment */
644 break;
645 argv[argc] = p;
646 while (*p && !(l_isspace(*p) && !quoted)) {
647 if (*p =='"') quoted = 1 - quoted;
648 if (*p =='[') quoted = 1;
649 if (*p ==']') quoted = 0;
650 p++;
651 }
652 if (*p)
653 {
654 *(p++) = '\0';
655 while (*p && l_isspace(*p))
656 p++;
657 }
658 }
659 return argc;
660 }
661
data1_absyn_getmarctab(data1_handle dh,data1_node * root)662 data1_marctab *data1_absyn_getmarctab(data1_handle dh, data1_node *root)
663 {
664 if (root->u.root.absyn)
665 return root->u.root.absyn->marc;
666 return 0;
667 }
668
data1_absyn_getelements(data1_handle dh,data1_node * root)669 data1_element *data1_absyn_getelements(data1_handle dh,
670 data1_node *root)
671 {
672 if (root->u.root.absyn)
673 return root->u.root.absyn->main_elements;
674 return 0;
675 }
676
data1_read_absyn(data1_handle dh,const char * file,enum DATA1_XPATH_INDEXING default_xpath)677 static data1_absyn *data1_read_absyn(data1_handle dh, const char *file,
678 enum DATA1_XPATH_INDEXING default_xpath)
679 {
680 data1_sub_elements *cur_elements = NULL;
681 data1_xpelement **cur_xpelement = NULL;
682 data1_attset *attset_list = data1_empty_attset(dh);
683 data1_attset_child **attset_childp = &attset_list->children;
684
685 data1_absyn *res = 0;
686 FILE *f;
687 data1_element **ppl[D1_MAX_NESTING];
688 data1_esetname **esetpp;
689 data1_maptab **maptabp;
690 data1_marctab **marcp;
691 data1_termlist *all = 0;
692 data1_tagset **tagset_childp;
693 struct data1_systag **systagsp;
694 int level = 0;
695 int lineno = 0;
696 int argc;
697 char *argv[50], line[512];
698
699 f = data1_path_fopen(dh, file, "r");
700
701 res = (data1_absyn *) nmem_malloc(data1_nmem_get(dh), sizeof(*res));
702 res->name = 0;
703 res->oid = 0;
704 res->tagset = 0;
705 res->encoding = 0;
706 res->xpath_indexing =
707 (f ? DATA1_XPATH_INDEXING_DISABLE : default_xpath);
708 res->systags = 0;
709 systagsp = &res->systags;
710 tagset_childp = &res->tagset;
711
712 res->varset = 0;
713 res->esetnames = 0;
714 esetpp = &res->esetnames;
715 res->maptabs = 0;
716 maptabp = &res->maptabs;
717 res->marc = 0;
718 marcp = &res->marc;
719 res->sub_elements = NULL;
720 res->main_elements = NULL;
721 res->xp_elements = NULL;
722 cur_xpelement = &res->xp_elements;
723
724 while (f && (argc = read_absyn_line(f, &lineno, line, 512, argv, 50)))
725 {
726 char *cmd = *argv;
727 if (!strcmp(cmd, "elm") || !strcmp(cmd, "element"))
728 {
729 data1_element *new_element;
730 int i;
731 char *p, *sub_p, *path, *name, *termlists;
732 int type, value;
733 data1_termlist **tp;
734
735 if (argc < 4)
736 {
737 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to elm", file, lineno);
738 continue;
739 }
740 path = argv[1];
741 name = argv[2];
742 termlists = argv[3];
743
744 if (!cur_elements)
745 {
746 cur_elements = (data1_sub_elements *)
747 nmem_malloc(data1_nmem_get(dh), sizeof(*cur_elements));
748 cur_elements->next = res->sub_elements;
749 cur_elements->elements = NULL;
750 cur_elements->name = "main";
751 res->sub_elements = cur_elements;
752
753 level = 0;
754 ppl[level] = &cur_elements->elements;
755 }
756 p = path;
757 for (i = 1;; i++)
758 {
759 char *e;
760
761 if ((e = strchr(p, '/')))
762 p = e+1;
763 else
764 break;
765 }
766 if (i > level+1)
767 {
768 yaz_log(YLOG_WARN, "%s:%d: Bad level increase", file, lineno);
769 fclose(f);
770 return 0;
771 }
772 level = i;
773 new_element = *ppl[level-1] = data1_mk_element(dh);
774
775 tp = &new_element->termlists;
776 ppl[level-1] = &new_element->next;
777 ppl[level] = &new_element->children;
778
779 /* consider subtree (if any) ... */
780 if ((sub_p = strchr (p, ':')) && sub_p[1])
781 {
782 *sub_p++ = '\0';
783 new_element->sub_name =
784 nmem_strdup (data1_nmem_get(dh), sub_p);
785 }
786 /* well-defined tag */
787 if (sscanf(p, "(%d,%d)", &type, &value) == 2)
788 {
789 if (!res->tagset)
790 {
791 yaz_log(YLOG_WARN, "%s:%d: No tagset loaded", file, lineno);
792 fclose(f);
793 return 0;
794 }
795 if (!(new_element->tag = data1_gettagbynum (dh, res->tagset,
796 type, value)))
797 {
798 yaz_log(YLOG_WARN, "%s:%d: Couldn't find tag %s in tagset",
799 file, lineno, p);
800 fclose(f);
801 return 0;
802 }
803 }
804 /* private tag */
805 else if (*p)
806 {
807 data1_tag *nt =
808 new_element->tag = (data1_tag *)
809 nmem_malloc(data1_nmem_get (dh),
810 sizeof(*new_element->tag));
811 nt->which = DATA1T_string;
812 nt->value.string = nmem_strdup(data1_nmem_get (dh), p);
813 nt->names = (data1_name *)
814 nmem_malloc(data1_nmem_get(dh),
815 sizeof(*new_element->tag->names));
816 nt->names->name = nt->value.string;
817 nt->names->next = 0;
818 nt->kind = DATA1K_string;
819 nt->next = 0;
820 nt->tagset = 0;
821 }
822 else
823 {
824 yaz_log(YLOG_WARN, "%s:%d: Bad element", file, lineno);
825 fclose(f);
826 return 0;
827 }
828 /* parse termList definitions */
829 p = termlists;
830 if (*p != '-')
831 {
832 if (parse_termlists (dh, &tp, p, file, lineno, name, res, 0,
833 attset_list))
834 {
835 fclose (f);
836 return 0;
837 }
838 *tp = all; /* append any ALL entries to the list */
839 }
840 new_element->name = nmem_strdup(data1_nmem_get (dh), name);
841 }
842 /* *ostrich*
843 New code to support xelm directive
844 for each xelm a dfa is built. xelms are stored in res->xp_elements
845
846 maybe we should use a simple sscanf instead of dfa?
847
848 pop, 2002-12-13
849
850 Now [] predicates are supported. regexps and xpath structure is
851 a bit redundant, however it's comfortable later...
852
853 pop, 2003-01-17
854 */
855
856 else if (!strcmp(cmd, "xelm") || !strcmp(cmd, "melm")) {
857
858 int i;
859 char *p, *xpath_expr, *termlists;
860 const char *regexp;
861 struct DFA *dfa = 0;
862 data1_termlist **tp;
863 char melm_xpath[128];
864 data1_xpelement *xp_ele = 0;
865 data1_xpelement *last_match = 0;
866
867 if (argc != 3)
868 {
869 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to %s",
870 file, lineno, cmd);
871 continue;
872 }
873
874 if (!strcmp(cmd, "melm")) {
875 if (melm2xpath(argv[1], melm_xpath) < 0)
876 continue;
877 xpath_expr = melm_xpath;
878 } else {
879 xpath_expr = argv[1];
880 }
881 termlists = argv[2];
882 regexp = mk_xpath_regexp(dh, xpath_expr);
883
884 #if OPTIMIZE_MELM
885 /* get last of existing regulars with same regexp */
886 for (xp_ele = res->xp_elements; xp_ele; xp_ele = xp_ele->next)
887 if (!strcmp(xp_ele->regexp, regexp))
888 last_match = xp_ele;
889 #endif
890 if (!last_match)
891 {
892 /* new regular expression . Parse + generate */
893 const char *regexp_ptr = regexp;
894
895 dfa = dfa_init();
896 i = dfa_parse (dfa, ®exp_ptr);
897 if (i || *regexp_ptr) {
898 yaz_log(YLOG_WARN, "%s:%d: Bad xpath to xelm", file, lineno);
899 dfa_delete (&dfa);
900 continue;
901 }
902 }
903 *cur_xpelement = (data1_xpelement *)
904 nmem_malloc(data1_nmem_get(dh), sizeof(**cur_xpelement));
905 (*cur_xpelement)->next = 0;
906 (*cur_xpelement)->match_next = 0;
907 if (last_match)
908 last_match->match_next = *cur_xpelement;
909 #if OPTIMIZE_MELM
910 (*cur_xpelement)->regexp = regexp;
911 #endif
912 (*cur_xpelement)->xpath_expr = nmem_strdup(data1_nmem_get (dh),
913 xpath_expr);
914
915 if (dfa)
916 dfa_mkstate (dfa);
917 (*cur_xpelement)->dfa = dfa;
918
919 #ifdef ENHANCED_XELM
920 (*cur_xpelement)->xpath_len =
921 zebra_parse_xpath_str(
922 xpath_expr,
923 (*cur_xpelement)->xpath, XPATH_STEP_COUNT,
924 data1_nmem_get(dh));
925 #endif
926 (*cur_xpelement)->termlists = 0;
927 tp = &(*cur_xpelement)->termlists;
928
929 /* parse termList definitions */
930 p = termlists;
931 if (*p != '-')
932 {
933 if (parse_termlists (dh, &tp, p, file, lineno,
934 xpath_expr, res, 1, attset_list))
935 {
936 fclose (f);
937 return 0;
938 }
939 *tp = all; /* append any ALL entries to the list */
940 }
941 cur_xpelement = &(*cur_xpelement)->next;
942 }
943 else if (!strcmp(cmd, "section"))
944 {
945 char *name;
946
947 if (argc < 2)
948 {
949 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to section",
950 file, lineno);
951 continue;
952 }
953 name = argv[1];
954
955 cur_elements = (data1_sub_elements *)
956 nmem_malloc(data1_nmem_get(dh), sizeof(*cur_elements));
957 cur_elements->next = res->sub_elements;
958 cur_elements->elements = NULL;
959 cur_elements->name = nmem_strdup (data1_nmem_get(dh), name);
960 res->sub_elements = cur_elements;
961
962 level = 0;
963 ppl[level] = &cur_elements->elements;
964 }
965 else if (!strcmp(cmd, "xpath"))
966 {
967 if (argc != 2)
968 {
969 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to 'xpath' directive",
970 file, lineno);
971 continue;
972 }
973 if (!strcmp(argv[1], "enable"))
974 res->xpath_indexing = DATA1_XPATH_INDEXING_ENABLE;
975 else if (!strcmp (argv[1], "disable"))
976 res->xpath_indexing = DATA1_XPATH_INDEXING_DISABLE;
977 else
978 {
979 yaz_log(YLOG_WARN, "%s:%d: Expecting disable/enable "
980 "after 'xpath' directive", file, lineno);
981 }
982 }
983 else if (!strcmp(cmd, "all"))
984 {
985 data1_termlist **tp = &all;
986 if (all)
987 {
988 yaz_log(YLOG_WARN, "%s:%d: Too many 'all' directives - ignored",
989 file, lineno);
990 continue;
991 }
992 if (argc != 2)
993 {
994 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to 'all' directive",
995 file, lineno);
996 continue;
997 }
998 if (parse_termlists (dh, &tp, argv[1], file, lineno, 0, res, 0,
999 attset_list))
1000 {
1001 fclose (f);
1002 return 0;
1003 }
1004 }
1005 else if (!strcmp(cmd, "name"))
1006 {
1007 if (argc != 2)
1008 {
1009 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to name directive",
1010 file, lineno);
1011 continue;
1012 }
1013 res->name = nmem_strdup(data1_nmem_get(dh), argv[1]);
1014 }
1015 else if (!strcmp(cmd, "reference"))
1016 {
1017 char *name;
1018
1019 if (argc != 2)
1020 {
1021 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to reference",
1022 file, lineno);
1023 continue;
1024 }
1025 name = argv[1];
1026 res->oid = yaz_string_to_oid_nmem(yaz_oid_std(),
1027 CLASS_SCHEMA, name,
1028 data1_nmem_get(dh));
1029 if (!res->oid)
1030 {
1031 yaz_log(YLOG_WARN, "%s:%d: Unknown tagset ref '%s'",
1032 file, lineno, name);
1033 continue;
1034 }
1035 }
1036 else if (!strcmp(cmd, "attset"))
1037 {
1038 char *name;
1039 data1_attset *attset;
1040
1041 if (argc != 2)
1042 {
1043 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to attset",
1044 file, lineno);
1045 continue;
1046 }
1047 name = argv[1];
1048 if (!(attset = data1_get_attset (dh, name)))
1049 {
1050 yaz_log(YLOG_WARN, "%s:%d: Couldn't find attset %s",
1051 file, lineno, name);
1052 continue;
1053 }
1054 *attset_childp = (data1_attset_child *)
1055 nmem_malloc (data1_nmem_get(dh), sizeof(**attset_childp));
1056 (*attset_childp)->child = attset;
1057 (*attset_childp)->next = 0;
1058 attset_childp = &(*attset_childp)->next;
1059 }
1060 else if (!strcmp(cmd, "tagset"))
1061 {
1062 char *name;
1063 int type = 0;
1064 if (argc < 2)
1065 {
1066 yaz_log(YLOG_WARN, "%s:%d: Bad # of args to tagset",
1067 file, lineno);
1068 continue;
1069 }
1070 name = argv[1];
1071 if (argc == 3)
1072 type = atoi(argv[2]);
1073 *tagset_childp = data1_read_tagset (dh, name, type);
1074 if (!(*tagset_childp))
1075 {
1076 yaz_log(YLOG_WARN, "%s:%d: Couldn't load tagset %s",
1077 file, lineno, name);
1078 continue;
1079 }
1080 tagset_childp = &(*tagset_childp)->next;
1081 }
1082 else if (!strcmp(cmd, "varset"))
1083 {
1084 char *name;
1085
1086 if (argc != 2)
1087 {
1088 yaz_log(YLOG_WARN, "%s:%d: Bad # of args in varset",
1089 file, lineno);
1090 continue;
1091 }
1092 name = argv[1];
1093 if (!(res->varset = data1_read_varset (dh, name)))
1094 {
1095 yaz_log(YLOG_WARN, "%s:%d: Couldn't load Varset %s",
1096 file, lineno, name);
1097 continue;
1098 }
1099 }
1100 else if (!strcmp(cmd, "esetname"))
1101 {
1102 char *name, *fname;
1103
1104 if (argc != 3)
1105 {
1106 yaz_log(YLOG_WARN, "%s:%d: Bad # of args in esetname",
1107 file, lineno);
1108 continue;
1109 }
1110 name = argv[1];
1111 fname = argv[2];
1112
1113 *esetpp = (data1_esetname *)
1114 nmem_malloc(data1_nmem_get(dh), sizeof(**esetpp));
1115 (*esetpp)->name = nmem_strdup(data1_nmem_get(dh), name);
1116 (*esetpp)->next = 0;
1117 if (*fname == '@')
1118 (*esetpp)->spec = 0;
1119 else if (!((*esetpp)->spec = data1_read_espec1 (dh, fname)))
1120 {
1121 yaz_log(YLOG_WARN, "%s:%d: Espec-1 read failed for %s",
1122 file, lineno, fname);
1123 continue;
1124 }
1125 esetpp = &(*esetpp)->next;
1126 }
1127 else if (!strcmp(cmd, "maptab"))
1128 {
1129 char *name;
1130
1131 if (argc != 2)
1132 {
1133 yaz_log(YLOG_WARN, "%s:%d: Bad # of args for maptab",
1134 file, lineno);
1135 continue;
1136 }
1137 name = argv[1];
1138 if (!(*maptabp = data1_read_maptab (dh, name)))
1139 {
1140 yaz_log(YLOG_WARN, "%s:%d: Couldn't load maptab %s",
1141 file, lineno, name);
1142 continue;
1143 }
1144 maptabp = &(*maptabp)->next;
1145 }
1146 else if (!strcmp(cmd, "marc"))
1147 {
1148 char *name;
1149
1150 if (argc != 2)
1151 {
1152 yaz_log(YLOG_WARN, "%s:%d: Bad # or args for marc",
1153 file, lineno);
1154 continue;
1155 }
1156 name = argv[1];
1157 if (!(*marcp = data1_read_marctab (dh, name)))
1158 {
1159 yaz_log(YLOG_WARN, "%s:%d: Couldn't read marctab %s",
1160 file, lineno, name);
1161 continue;
1162 }
1163 marcp = &(*marcp)->next;
1164 }
1165 else if (!strcmp(cmd, "encoding"))
1166 {
1167 if (argc != 2)
1168 {
1169 yaz_log(YLOG_WARN, "%s:%d: Bad # or args for encoding",
1170 file, lineno);
1171 continue;
1172 }
1173 res->encoding = nmem_strdup (data1_nmem_get(dh), argv[1]);
1174 }
1175 else if (!strcmp(cmd, "systag"))
1176 {
1177 if (argc != 3)
1178 {
1179 yaz_log(YLOG_WARN, "%s:%d: Bad # or args for systag",
1180 file, lineno);
1181 continue;
1182 }
1183 *systagsp = nmem_malloc (data1_nmem_get(dh), sizeof(**systagsp));
1184
1185 (*systagsp)->name = nmem_strdup(data1_nmem_get(dh), argv[1]);
1186 (*systagsp)->value = nmem_strdup(data1_nmem_get(dh), argv[2]);
1187 systagsp = &(*systagsp)->next;
1188 }
1189 else
1190 {
1191 yaz_log(YLOG_WARN, "%s:%d: Unknown directive '%s'", file,
1192 lineno, cmd);
1193 continue;
1194 }
1195 }
1196 if (f)
1197 fclose(f);
1198
1199 for (cur_elements = res->sub_elements; cur_elements;
1200 cur_elements = cur_elements->next)
1201 {
1202 if (!strcmp (cur_elements->name, "main"))
1203 res->main_elements = cur_elements->elements;
1204 fix_element_ref (dh, res, cur_elements->elements);
1205 }
1206 *systagsp = 0;
1207 return res;
1208 }
1209
1210 /*
1211 * Local variables:
1212 * c-basic-offset: 4
1213 * c-file-style: "Stroustrup"
1214 * indent-tabs-mode: nil
1215 * End:
1216 * vim: shiftwidth=4 tabstop=8 expandtab
1217 */
1218
1219