2 * Copyright (c) 1995-1998, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.2 1999-11-30 13:47:12 adam
8 * Improved installation. Moved header files to include/yaz.
10 * Revision 1.1 1999/06/08 10:10:16 adam
11 * New sub directory zutil. Moved YAZ Compiler to be part of YAZ tree.
13 * Revision 1.22 1999/04/20 09:56:49 adam
14 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
15 * Modified all encoders/decoders to reflect this change.
17 * Revision 1.21 1998/10/13 16:03:37 adam
18 * Better checking for invalid OID's in p_query_rpn.
20 * Revision 1.20 1998/03/31 15:13:20 adam
21 * Development towards compiled ASN.1.
23 * Revision 1.19 1998/03/05 08:09:03 adam
24 * Minor change to make C++ happy.
26 * Revision 1.18 1998/02/11 11:53:36 adam
27 * Changed code so that it compiles as C++.
29 * Revision 1.17 1997/11/24 11:33:57 adam
30 * Using function odr_nullval() instead of global ODR_NULLVAL when
33 * Revision 1.16 1997/09/29 13:19:00 adam
34 * Added function, oid_ent_to_oid, to replace the function
35 * oid_getoidbyent, which is not thread safe.
37 * Revision 1.15 1997/09/29 07:13:43 adam
38 * Changed type of a few variables to avoid warnings.
40 * Revision 1.14 1997/09/22 12:33:41 adam
41 * Fixed bug introduced by previous commit.
43 * Revision 1.13 1997/09/17 12:10:42 adam
46 * Revision 1.12 1997/09/01 08:54:13 adam
47 * New windows NT/95 port using MSV5.0. Made prefix query handling
48 * thread safe. The function options ignores empty arguments when met.
50 * Revision 1.11 1996/11/11 13:15:29 adam
51 * Added proximity operator.
53 * Revision 1.10 1996/08/12 14:10:35 adam
54 * New function p_query_attset to define default attribute set.
56 * Revision 1.9 1996/03/15 11:03:46 adam
57 * Attribute set can be set globally for a query with the @attrset
58 * operator. The @attr operator has an optional attribute-set specifier
59 * that sets the attribute set locally.
61 * Revision 1.8 1996/01/02 11:46:56 quinn
62 * Changed 'operator' to 'roperator' to avoid C++ conflict.
64 * Revision 1.7 1995/09/29 17:12:36 quinn
67 * Revision 1.6 1995/09/27 15:03:03 quinn
68 * Modified function heads & prototypes.
70 * Revision 1.5 1995/06/15 12:31:02 quinn
71 * *** empty log message ***
73 * Revision 1.4 1995/06/15 07:45:19 quinn
76 * Revision 1.3 1995/06/14 11:06:35 adam
77 * Bug fix: Attributes wasn't interpreted correctly!
79 * Revision 1.2 1995/05/26 08:56:11 adam
80 * New function: p_query_scan.
82 * Revision 1.1 1995/05/22 15:31:49 adam
83 * New function, p_query_rpn, to convert from prefix (ascii) to rpn (asn).
91 #include <yaz/proto.h>
93 #include <yaz/pquery.h>
95 static oid_value p_query_dfset = VAL_NONE;
98 const char *query_buf;
108 static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o, oid_proto,
109 int num_attr, int max_attr,
110 int *attr_list, oid_value *attr_set);
112 static enum oid_value query_oid_getvalbyname (struct lex_info *li)
114 enum oid_value value;
117 if (li->lex_len > 31)
119 memcpy (buf, li->lex_buf, li->lex_len);
120 buf[li->lex_len] = '\0';
121 value = oid_getvalbyname (buf);
125 static int compare_term (struct lex_info *li, const char *src, size_t off)
127 size_t len=strlen(src);
129 if (li->lex_len == len+off && !memcmp (li->lex_buf+off, src, len-off))
134 static int query_token (struct lex_info *li)
136 const char *sep_match;
137 const char **qptr = &li->query_buf;
139 while (**qptr == ' ')
144 if ((sep_match = strchr (li->left_sep, **qptr)))
146 int sep_index = sep_match - li->left_sep;
150 while (**qptr && **qptr != li->right_sep[sep_index])
161 while (**qptr && **qptr != ' ')
167 if (li->lex_len >= 1 && li->lex_buf[0] == li->escape_char)
169 if (compare_term (li, "and", 1))
171 if (compare_term (li, "or", 1))
173 if (compare_term (li, "not", 1))
175 if (compare_term (li, "attr", 1))
177 if (compare_term (li, "set", 1))
179 if (compare_term (li, "attrset", 1))
181 if (compare_term (li, "prox", 1))
183 if (compare_term (li, "term", 1))
189 static int lex (struct lex_info *li)
191 return li->query_look = query_token (li);
194 static Z_AttributesPlusTerm *rpn_term (struct lex_info *li, ODR o,
196 int num_attr, int *attr_list,
199 Z_AttributesPlusTerm *zapt;
202 Z_AttributeElement **elements;
204 zapt = (Z_AttributesPlusTerm *)odr_malloc (o, sizeof(*zapt));
205 term_octet = (Odr_oct *)odr_malloc (o, sizeof(*term_octet));
206 term = (Z_Term *)odr_malloc (o, sizeof(*term));
209 elements = (Z_AttributeElement**)odr_nullval();
215 elements = (Z_AttributeElement**)
216 odr_malloc (o, num_attr * sizeof(*elements));
218 attr_tmp = (int *)odr_malloc (o, num_attr * 2 * sizeof(int));
219 memcpy (attr_tmp, attr_list, num_attr * 2 * sizeof(int));
220 for (i = 0; i < num_attr; i++)
223 (Z_AttributeElement*)odr_malloc (o,sizeof(**elements));
224 elements[i]->attributeType = &attr_tmp[2*i];
225 if (attr_set[i] == VAL_NONE)
226 elements[i]->attributeSet = 0;
232 attrid.proto = PROTO_Z3950;
233 attrid.oclass = CLASS_ATTSET;
234 attrid.value = attr_set[i];
236 elements[i]->attributeSet =
237 odr_oiddup (o, oid_ent_to_oid (&attrid, oid));
239 elements[i]->which = Z_AttributeValue_numeric;
240 elements[i]->value.numeric = &attr_tmp[2*i+1];
244 zapt->attributes = (Z_AttributeList *)
245 odr_malloc (o, sizeof(*zapt->attributes));
246 zapt->attributes->num_attributes = num_attr;
247 zapt->attributes->attributes = elements;
249 zapt->num_attributes = num_attr;
250 zapt->attributeList = elements;
254 term->which = Z_Term_general;
255 term->u.general = term_octet;
256 term_octet->buf = (unsigned char *)odr_malloc (o, li->lex_len);
257 term_octet->size = term_octet->len = li->lex_len;
258 memcpy (term_octet->buf, li->lex_buf, li->lex_len);
262 static Z_Operand *rpn_simple (struct lex_info *li, ODR o, oid_proto proto,
263 int num_attr, int *attr_list,
268 zo = (Z_Operand *)odr_malloc (o, sizeof(*zo));
269 switch (li->query_look)
272 zo->which = Z_Operand_APT;
273 if (!(zo->u.attributesPlusTerm =
274 rpn_term (li, o, proto, num_attr, attr_list, attr_set)))
282 zo->which = Z_Operand_resultSetId;
283 zo->u.resultSetId = (char *)odr_malloc (o, li->lex_len+1);
284 memcpy (zo->u.resultSetId, li->lex_buf, li->lex_len);
285 zo->u.resultSetId[li->lex_len] = '\0';
294 static Z_ProximityOperator *rpn_proximity (struct lex_info *li, ODR o)
296 Z_ProximityOperator *p = (Z_ProximityOperator *)odr_malloc (o, sizeof(*p));
300 if (*li->lex_buf == '1')
302 p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
305 else if (*li->lex_buf == '0')
307 p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
315 p->distance = (int *)odr_malloc (o, sizeof(*p->distance));
316 *p->distance = atoi (li->lex_buf);
320 p->ordered = (int *)odr_malloc (o, sizeof(*p->ordered));
321 *p->ordered = atoi (li->lex_buf);
325 p->relationType = (int *)odr_malloc (o, sizeof(*p->relationType));
326 *p->relationType = atoi (li->lex_buf);
330 if (*li->lex_buf == 'k')
332 else if (*li->lex_buf == 'p')
335 p->which = atoi (li->lex_buf);
340 p->which = Z_ProximityOperator_known;
341 p->u.known = (int *)odr_malloc (o, sizeof(*p->u.known));
342 *p->u.known = atoi (li->lex_buf);
344 p->proximityUnitCode = (int *)odr_malloc (o, sizeof(*p->proximityUnitCode));
345 *p->proximityUnitCode = atoi (li->lex_buf);
350 static Z_Complex *rpn_complex (struct lex_info *li, ODR o, oid_proto proto,
351 int num_attr, int max_attr,
352 int *attr_list, oid_value *attr_set)
357 zc = (Z_Complex *)odr_malloc (o, sizeof(*zc));
358 zo = (Z_Operator *)odr_malloc (o, sizeof(*zo));
360 switch (li->query_look)
363 zo->which = Z_Operator_and;
364 zo->u.and = odr_nullval();
367 zo->which = Z_Operator_or;
368 zo->u.and = odr_nullval();
371 zo->which = Z_Operator_and_not;
372 zo->u.and = odr_nullval();
375 zo->which = Z_Operator_prox;
376 zo->u.prox = rpn_proximity (li, o);
385 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
389 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
395 static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o,
397 int num_attr, int max_attr,
398 int *attr_list, oid_value *attr_set)
403 sz = (Z_RPNStructure *)odr_malloc (o, sizeof(*sz));
404 switch (li->query_look)
410 sz->which = Z_RPNStructure_complex;
411 if (!(sz->u.complex =
412 rpn_complex (li, o, proto, num_attr, max_attr, attr_list,
418 sz->which = Z_RPNStructure_simple;
420 rpn_simple (li, o, proto, num_attr, attr_list,
428 if (num_attr >= max_attr)
430 if (!(cp = strchr (li->lex_buf, '=')) ||
431 (size_t) (cp-li->lex_buf) > li->lex_len)
433 attr_set[num_attr] = query_oid_getvalbyname (li);
434 if (attr_set[num_attr] == VAL_NONE)
438 if (!(cp = strchr (li->lex_buf, '=')))
444 attr_set[num_attr] = attr_set[num_attr-1];
446 attr_set[num_attr] = VAL_NONE;
448 attr_list[2*num_attr] = atoi (li->lex_buf);
449 attr_list[2*num_attr+1] = atoi (cp+1);
453 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
459 if (compare_term (li, "general", 0))
460 li->term_type = Z_Term_general;
461 else if (compare_term (li, "numeric", 0))
462 li->term_type = Z_Term_numeric;
463 else if (compare_term (li, "string", 0))
464 li->term_type = Z_Term_characterString;
465 else if (compare_term (li, "oid", 0))
466 li->term_type = Z_Term_oid;
467 else if (compare_term (li, "datetime", 0))
468 li->term_type = Z_Term_dateTime;
469 else if (compare_term (li, "null", 0))
470 li->term_type = Z_Term_null;
473 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
475 case 0: /* operator/operand expected! */
481 Z_RPNQuery *p_query_rpn_mk (ODR o, struct lex_info *li, oid_proto proto,
485 int attr_array[1024];
486 oid_value attr_set[512];
487 oid_value topSet = VAL_NONE;
491 zq = (Z_RPNQuery *)odr_malloc (o, sizeof(*zq));
493 if (li->query_look == 'r')
496 topSet = query_oid_getvalbyname (li);
497 if (topSet == VAL_NONE)
502 if (topSet == VAL_NONE)
503 topSet = p_query_dfset;
504 if (topSet == VAL_NONE)
507 oset.oclass = CLASS_ATTSET;
510 if (!oid_ent_to_oid (&oset, oid))
512 zq->attributeSetId = odr_oiddup (o, oid);
514 if (!(zq->RPNStructure = rpn_structure (li, o, proto, 0, 512,
515 attr_array, attr_set)))
520 Z_RPNQuery *p_query_rpn (ODR o, oid_proto proto,
526 li.right_sep = "}\"";
527 li.escape_char = '@';
528 li.term_type = Z_Term_general;
530 return p_query_rpn_mk (o, &li, proto, qbuf);
533 Z_AttributesPlusTerm *p_query_scan_mk (struct lex_info *li,
534 ODR o, oid_proto proto,
535 Odr_oid **attributeSetP,
539 oid_value attr_set[512];
543 oid_value topSet = VAL_NONE;
548 if (li->query_look == 'r')
551 topSet = query_oid_getvalbyname (li);
555 if (topSet == VAL_NONE)
556 topSet = p_query_dfset;
557 if (topSet == VAL_NONE)
560 oset.oclass = CLASS_ATTSET;
563 *attributeSetP = odr_oiddup (o, oid_ent_to_oid (&oset, oid));
565 while (li->query_look == 'l')
570 if (num_attr >= max_attr)
573 if (!(cp = strchr (li->lex_buf, '=')) ||
574 (size_t) (cp-li->lex_buf) > li->lex_len)
576 attr_set[num_attr] = query_oid_getvalbyname (li);
579 if (!(cp = strchr (li->lex_buf, '=')))
585 attr_set[num_attr] = attr_set[num_attr-1];
587 attr_set[num_attr] = VAL_NONE;
589 attr_list[2*num_attr] = atoi (li->lex_buf);
590 attr_list[2*num_attr+1] = atoi (cp+1);
596 return rpn_term (li, o, proto, num_attr, attr_list, attr_set);
599 Z_AttributesPlusTerm *p_query_scan (ODR o, oid_proto proto,
600 Odr_oid **attributeSetP,
606 li.right_sep = "}\"";
607 li.escape_char = '@';
608 li.term_type = Z_Term_general;
611 return p_query_scan_mk (&li, o, proto, attributeSetP, qbuf);
614 int p_query_attset (const char *arg)
616 p_query_dfset = oid_getvalbyname (arg);
617 return (p_query_dfset == VAL_NONE) ? -1 : 0;