2 * Copyright (c) 1995-1998, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.5 2001-02-21 13:46:54 adam
10 * Revision 1.4 1999/12/21 16:25:20 adam
11 * Fixed handling of default/inherited attributes.
13 * Revision 1.3 1999/12/20 15:20:13 adam
14 * Implemented ccl_pquery to convert from CCL tree to prefix query.
16 * Revision 1.2 1999/11/30 13:47:12 adam
17 * Improved installation. Moved header files to include/yaz.
19 * Revision 1.1 1999/06/08 10:10:16 adam
20 * New sub directory zutil. Moved YAZ Compiler to be part of YAZ tree.
22 * Revision 1.22 1999/04/20 09:56:49 adam
23 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
24 * Modified all encoders/decoders to reflect this change.
26 * Revision 1.21 1998/10/13 16:03:37 adam
27 * Better checking for invalid OID's in p_query_rpn.
29 * Revision 1.20 1998/03/31 15:13:20 adam
30 * Development towards compiled ASN.1.
32 * Revision 1.19 1998/03/05 08:09:03 adam
33 * Minor change to make C++ happy.
35 * Revision 1.18 1998/02/11 11:53:36 adam
36 * Changed code so that it compiles as C++.
38 * Revision 1.17 1997/11/24 11:33:57 adam
39 * Using function odr_nullval() instead of global ODR_NULLVAL when
42 * Revision 1.16 1997/09/29 13:19:00 adam
43 * Added function, oid_ent_to_oid, to replace the function
44 * oid_getoidbyent, which is not thread safe.
46 * Revision 1.15 1997/09/29 07:13:43 adam
47 * Changed type of a few variables to avoid warnings.
49 * Revision 1.14 1997/09/22 12:33:41 adam
50 * Fixed bug introduced by previous commit.
52 * Revision 1.13 1997/09/17 12:10:42 adam
55 * Revision 1.12 1997/09/01 08:54:13 adam
56 * New windows NT/95 port using MSV5.0. Made prefix query handling
57 * thread safe. The function options ignores empty arguments when met.
59 * Revision 1.11 1996/11/11 13:15:29 adam
60 * Added proximity operator.
62 * Revision 1.10 1996/08/12 14:10:35 adam
63 * New function p_query_attset to define default attribute set.
65 * Revision 1.9 1996/03/15 11:03:46 adam
66 * Attribute set can be set globally for a query with the @attrset
67 * operator. The @attr operator has an optional attribute-set specifier
68 * that sets the attribute set locally.
70 * Revision 1.8 1996/01/02 11:46:56 quinn
71 * Changed 'operator' to 'roperator' to avoid C++ conflict.
73 * Revision 1.7 1995/09/29 17:12:36 quinn
76 * Revision 1.6 1995/09/27 15:03:03 quinn
77 * Modified function heads & prototypes.
79 * Revision 1.5 1995/06/15 12:31:02 quinn
80 * *** empty log message ***
82 * Revision 1.4 1995/06/15 07:45:19 quinn
85 * Revision 1.3 1995/06/14 11:06:35 adam
86 * Bug fix: Attributes wasn't interpreted correctly!
88 * Revision 1.2 1995/05/26 08:56:11 adam
89 * New function: p_query_scan.
91 * Revision 1.1 1995/05/22 15:31:49 adam
92 * New function, p_query_rpn, to convert from prefix (ascii) to rpn (asn).
100 #include <yaz/proto.h>
102 #include <yaz/pquery.h>
104 static oid_value p_query_dfset = VAL_NONE;
107 const char *query_buf;
117 static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o, oid_proto,
118 int num_attr, int max_attr,
119 int *attr_list, oid_value *attr_set);
121 static enum oid_value query_oid_getvalbyname (struct lex_info *li)
123 enum oid_value value;
126 if (li->lex_len > 31)
128 memcpy (buf, li->lex_buf, li->lex_len);
129 buf[li->lex_len] = '\0';
130 value = oid_getvalbyname (buf);
134 static int compare_term (struct lex_info *li, const char *src, size_t off)
136 size_t len=strlen(src);
138 if (li->lex_len == len+off && !memcmp (li->lex_buf+off, src, len-off))
143 static int query_token (struct lex_info *li)
145 const char *sep_match;
146 const char **qptr = &li->query_buf;
148 while (**qptr == ' ')
153 if ((sep_match = strchr (li->left_sep, **qptr)))
155 int sep_index = sep_match - li->left_sep;
159 while (**qptr && **qptr != li->right_sep[sep_index])
170 while (**qptr && **qptr != ' ')
176 if (li->lex_len >= 1 && li->lex_buf[0] == li->escape_char)
178 if (compare_term (li, "and", 1))
180 if (compare_term (li, "or", 1))
182 if (compare_term (li, "not", 1))
184 if (compare_term (li, "attr", 1))
186 if (compare_term (li, "set", 1))
188 if (compare_term (li, "attrset", 1))
190 if (compare_term (li, "prox", 1))
192 if (compare_term (li, "term", 1))
198 static int lex (struct lex_info *li)
200 return li->query_look = query_token (li);
203 static Z_AttributesPlusTerm *rpn_term (struct lex_info *li, ODR o,
205 int num_attr, int *attr_list,
208 Z_AttributesPlusTerm *zapt;
211 Z_AttributeElement **elements;
213 zapt = (Z_AttributesPlusTerm *)odr_malloc (o, sizeof(*zapt));
214 term_octet = (Odr_oct *)odr_malloc (o, sizeof(*term_octet));
215 term = (Z_Term *)odr_malloc (o, sizeof(*term));
218 elements = (Z_AttributeElement**)odr_nullval();
224 elements = (Z_AttributeElement**)
225 odr_malloc (o, num_attr * sizeof(*elements));
227 attr_tmp = (int *)odr_malloc (o, num_attr * 2 * sizeof(int));
228 memcpy (attr_tmp, attr_list, num_attr * 2 * sizeof(int));
229 for (i = num_attr; --i >= 0; )
232 for (j = i+1; j<num_attr; j++)
233 if (attr_tmp[2*j] == attr_tmp[2*i])
238 (Z_AttributeElement*)odr_malloc (o,sizeof(**elements));
239 elements[k]->attributeType = &attr_tmp[2*i];
240 if (attr_set[i] == VAL_NONE)
241 elements[k]->attributeSet = 0;
247 attrid.proto = PROTO_Z3950;
248 attrid.oclass = CLASS_ATTSET;
249 attrid.value = attr_set[i];
251 elements[k]->attributeSet =
252 odr_oiddup (o, oid_ent_to_oid (&attrid, oid));
254 elements[k]->which = Z_AttributeValue_numeric;
255 elements[k]->value.numeric = &attr_tmp[2*i+1];
261 zapt->attributes = (Z_AttributeList *)
262 odr_malloc (o, sizeof(*zapt->attributes));
263 zapt->attributes->num_attributes = num_attr;
264 zapt->attributes->attributes = elements;
266 zapt->num_attributes = num_attr;
267 zapt->attributeList = elements;
271 term->which = Z_Term_general;
272 term->u.general = term_octet;
273 term_octet->buf = (unsigned char *)odr_malloc (o, li->lex_len);
274 term_octet->size = term_octet->len = li->lex_len;
275 memcpy (term_octet->buf, li->lex_buf, li->lex_len);
279 static Z_Operand *rpn_simple (struct lex_info *li, ODR o, oid_proto proto,
280 int num_attr, int *attr_list,
285 zo = (Z_Operand *)odr_malloc (o, sizeof(*zo));
286 switch (li->query_look)
289 zo->which = Z_Operand_APT;
290 if (!(zo->u.attributesPlusTerm =
291 rpn_term (li, o, proto, num_attr, attr_list, attr_set)))
299 zo->which = Z_Operand_resultSetId;
300 zo->u.resultSetId = (char *)odr_malloc (o, li->lex_len+1);
301 memcpy (zo->u.resultSetId, li->lex_buf, li->lex_len);
302 zo->u.resultSetId[li->lex_len] = '\0';
311 static Z_ProximityOperator *rpn_proximity (struct lex_info *li, ODR o)
313 Z_ProximityOperator *p = (Z_ProximityOperator *)odr_malloc (o, sizeof(*p));
317 if (*li->lex_buf == '1')
319 p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
322 else if (*li->lex_buf == '0')
324 p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
332 p->distance = (int *)odr_malloc (o, sizeof(*p->distance));
333 *p->distance = atoi (li->lex_buf);
337 p->ordered = (int *)odr_malloc (o, sizeof(*p->ordered));
338 *p->ordered = atoi (li->lex_buf);
342 p->relationType = (int *)odr_malloc (o, sizeof(*p->relationType));
343 *p->relationType = atoi (li->lex_buf);
347 if (*li->lex_buf == 'k')
349 else if (*li->lex_buf == 'p')
352 p->which = atoi (li->lex_buf);
357 p->which = Z_ProximityOperator_known;
358 p->u.known = (int *)odr_malloc (o, sizeof(*p->u.known));
359 *p->u.known = atoi (li->lex_buf);
361 p->proximityUnitCode = (int *)odr_malloc (o, sizeof(*p->proximityUnitCode));
362 *p->proximityUnitCode = atoi (li->lex_buf);
367 static Z_Complex *rpn_complex (struct lex_info *li, ODR o, oid_proto proto,
368 int num_attr, int max_attr,
369 int *attr_list, oid_value *attr_set)
374 zc = (Z_Complex *)odr_malloc (o, sizeof(*zc));
375 zo = (Z_Operator *)odr_malloc (o, sizeof(*zo));
377 switch (li->query_look)
380 zo->which = Z_Operator_and;
381 zo->u.op_and = odr_nullval();
384 zo->which = Z_Operator_or;
385 zo->u.op_or = odr_nullval();
388 zo->which = Z_Operator_and_not;
389 zo->u.op_and_not = odr_nullval();
392 zo->which = Z_Operator_prox;
393 zo->u.prox = rpn_proximity (li, o);
402 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
406 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
412 static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o,
414 int num_attr, int max_attr,
415 int *attr_list, oid_value *attr_set)
420 sz = (Z_RPNStructure *)odr_malloc (o, sizeof(*sz));
421 switch (li->query_look)
427 sz->which = Z_RPNStructure_complex;
428 if (!(sz->u.complex =
429 rpn_complex (li, o, proto, num_attr, max_attr, attr_list,
435 sz->which = Z_RPNStructure_simple;
437 rpn_simple (li, o, proto, num_attr, attr_list,
445 if (num_attr >= max_attr)
447 if (!(cp = strchr (li->lex_buf, '=')) ||
448 (size_t) (cp-li->lex_buf) > li->lex_len)
450 attr_set[num_attr] = query_oid_getvalbyname (li);
451 if (attr_set[num_attr] == VAL_NONE)
455 if (!(cp = strchr (li->lex_buf, '=')))
461 attr_set[num_attr] = attr_set[num_attr-1];
463 attr_set[num_attr] = VAL_NONE;
465 attr_list[2*num_attr] = atoi(li->lex_buf);
466 attr_list[2*num_attr+1] = atoi (cp+1);
470 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
476 if (compare_term (li, "general", 0))
477 li->term_type = Z_Term_general;
478 else if (compare_term (li, "numeric", 0))
479 li->term_type = Z_Term_numeric;
480 else if (compare_term (li, "string", 0))
481 li->term_type = Z_Term_characterString;
482 else if (compare_term (li, "oid", 0))
483 li->term_type = Z_Term_oid;
484 else if (compare_term (li, "datetime", 0))
485 li->term_type = Z_Term_dateTime;
486 else if (compare_term (li, "null", 0))
487 li->term_type = Z_Term_null;
490 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
492 case 0: /* operator/operand expected! */
498 Z_RPNQuery *p_query_rpn_mk (ODR o, struct lex_info *li, oid_proto proto,
502 int attr_array[1024];
503 oid_value attr_set[512];
504 oid_value topSet = VAL_NONE;
508 zq = (Z_RPNQuery *)odr_malloc (o, sizeof(*zq));
510 if (li->query_look == 'r')
513 topSet = query_oid_getvalbyname (li);
514 if (topSet == VAL_NONE)
519 if (topSet == VAL_NONE)
520 topSet = p_query_dfset;
521 if (topSet == VAL_NONE)
524 oset.oclass = CLASS_ATTSET;
527 if (!oid_ent_to_oid (&oset, oid))
529 zq->attributeSetId = odr_oiddup (o, oid);
531 if (!(zq->RPNStructure = rpn_structure (li, o, proto, 0, 512,
532 attr_array, attr_set)))
537 Z_RPNQuery *p_query_rpn (ODR o, oid_proto proto,
543 li.right_sep = "}\"";
544 li.escape_char = '@';
545 li.term_type = Z_Term_general;
547 return p_query_rpn_mk (o, &li, proto, qbuf);
550 Z_AttributesPlusTerm *p_query_scan_mk (struct lex_info *li,
551 ODR o, oid_proto proto,
552 Odr_oid **attributeSetP,
556 oid_value attr_set[512];
560 oid_value topSet = VAL_NONE;
565 if (li->query_look == 'r')
568 topSet = query_oid_getvalbyname (li);
572 if (topSet == VAL_NONE)
573 topSet = p_query_dfset;
574 if (topSet == VAL_NONE)
577 oset.oclass = CLASS_ATTSET;
580 *attributeSetP = odr_oiddup (o, oid_ent_to_oid (&oset, oid));
582 while (li->query_look == 'l')
587 if (num_attr >= max_attr)
590 if (!(cp = strchr (li->lex_buf, '=')) ||
591 (size_t) (cp-li->lex_buf) > li->lex_len)
593 attr_set[num_attr] = query_oid_getvalbyname (li);
596 if (!(cp = strchr (li->lex_buf, '=')))
602 attr_set[num_attr] = attr_set[num_attr-1];
604 attr_set[num_attr] = VAL_NONE;
606 attr_list[2*num_attr] = atoi (li->lex_buf);
607 attr_list[2*num_attr+1] = atoi (cp+1);
613 return rpn_term (li, o, proto, num_attr, attr_list, attr_set);
616 Z_AttributesPlusTerm *p_query_scan (ODR o, oid_proto proto,
617 Odr_oid **attributeSetP,
623 li.right_sep = "}\"";
624 li.escape_char = '@';
625 li.term_type = Z_Term_general;
628 return p_query_scan_mk (&li, o, proto, attributeSetP, qbuf);
631 int p_query_attset (const char *arg)
633 p_query_dfset = oid_getvalbyname (arg);
634 return (p_query_dfset == VAL_NONE) ? -1 : 0;