2 * Copyright (c) 1995-1998, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.20 1998-03-31 15:13:20 adam
8 * Development towards compiled ASN.1.
10 * Revision 1.19 1998/03/05 08:09:03 adam
11 * Minor change to make C++ happy.
13 * Revision 1.18 1998/02/11 11:53:36 adam
14 * Changed code so that it compiles as C++.
16 * Revision 1.17 1997/11/24 11:33:57 adam
17 * Using function odr_nullval() instead of global ODR_NULLVAL when
20 * Revision 1.16 1997/09/29 13:19:00 adam
21 * Added function, oid_ent_to_oid, to replace the function
22 * oid_getoidbyent, which is not thread safe.
24 * Revision 1.15 1997/09/29 07:13:43 adam
25 * Changed type of a few variables to avoid warnings.
27 * Revision 1.14 1997/09/22 12:33:41 adam
28 * Fixed bug introduced by previous commit.
30 * Revision 1.13 1997/09/17 12:10:42 adam
33 * Revision 1.12 1997/09/01 08:54:13 adam
34 * New windows NT/95 port using MSV5.0. Made prefix query handling
35 * thread safe. The function options ignores empty arguments when met.
37 * Revision 1.11 1996/11/11 13:15:29 adam
38 * Added proximity operator.
40 * Revision 1.10 1996/08/12 14:10:35 adam
41 * New function p_query_attset to define default attribute set.
43 * Revision 1.9 1996/03/15 11:03:46 adam
44 * Attribute set can be set globally for a query with the @attrset
45 * operator. The @attr operator has an optional attribute-set specifier
46 * that sets the attribute set locally.
48 * Revision 1.8 1996/01/02 11:46:56 quinn
49 * Changed 'operator' to 'roperator' to avoid C++ conflict.
51 * Revision 1.7 1995/09/29 17:12:36 quinn
54 * Revision 1.6 1995/09/27 15:03:03 quinn
55 * Modified function heads & prototypes.
57 * Revision 1.5 1995/06/15 12:31:02 quinn
58 * *** empty log message ***
60 * Revision 1.4 1995/06/15 07:45:19 quinn
63 * Revision 1.3 1995/06/14 11:06:35 adam
64 * Bug fix: Attributes wasn't interpreted correctly!
66 * Revision 1.2 1995/05/26 08:56:11 adam
67 * New function: p_query_scan.
69 * Revision 1.1 1995/05/22 15:31:49 adam
70 * New function, p_query_rpn, to convert from prefix (ascii) to rpn (asn).
83 static oid_value p_query_dfset = VAL_NONE;
86 const char *query_buf;
96 static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o, oid_proto,
97 int num_attr, int max_attr,
98 int *attr_list, oid_value *attr_set);
100 static enum oid_value query_oid_getvalbyname (struct lex_info *li)
104 if (li->lex_len > 31)
106 memcpy (buf, li->lex_buf, li->lex_len);
107 buf[li->lex_len] = '\0';
108 return oid_getvalbyname (buf);
111 static int compare_term (struct lex_info *li, const char *src, size_t off)
113 size_t len=strlen(src);
115 if (li->lex_len == len+off && !memcmp (li->lex_buf+off, src, len-off))
120 static int query_token (struct lex_info *li)
122 const char *sep_match;
123 const char **qptr = &li->query_buf;
125 while (**qptr == ' ')
130 if ((sep_match = strchr (li->left_sep, **qptr)))
132 int sep_index = sep_match - li->left_sep;
136 while (**qptr && **qptr != li->right_sep[sep_index])
147 while (**qptr && **qptr != ' ')
153 if (li->lex_len >= 1 && li->lex_buf[0] == li->escape_char)
155 if (compare_term (li, "and", 1))
157 if (compare_term (li, "or", 1))
159 if (compare_term (li, "not", 1))
161 if (compare_term (li, "attr", 1))
163 if (compare_term (li, "set", 1))
165 if (compare_term (li, "attrset", 1))
167 if (compare_term (li, "prox", 1))
169 if (compare_term (li, "term", 1))
175 static int lex (struct lex_info *li)
177 return li->query_look = query_token (li);
180 static Z_AttributesPlusTerm *rpn_term (struct lex_info *li, ODR o,
182 int num_attr, int *attr_list,
185 Z_AttributesPlusTerm *zapt;
188 Z_AttributeElement **elements;
190 zapt = (Z_AttributesPlusTerm *)odr_malloc (o, sizeof(*zapt));
191 term_octet = (Odr_oct *)odr_malloc (o, sizeof(*term_octet));
192 term = (Z_Term *)odr_malloc (o, sizeof(*term));
195 elements = (Z_AttributeElement**)odr_nullval();
201 elements = (Z_AttributeElement**)
202 odr_malloc (o, num_attr * sizeof(*elements));
204 attr_tmp = (int *)odr_malloc (o, num_attr * 2 * sizeof(int));
205 memcpy (attr_tmp, attr_list, num_attr * 2 * sizeof(int));
206 for (i = 0; i < num_attr; i++)
209 (Z_AttributeElement*)odr_malloc (o,sizeof(**elements));
210 elements[i]->attributeType = &attr_tmp[2*i];
212 if (attr_set[i] == VAL_NONE)
213 elements[i]->attributeSet = 0;
219 attrid.proto = PROTO_Z3950;
220 attrid.oclass = CLASS_ATTSET;
221 attrid.value = attr_set[i];
223 elements[i]->attributeSet =
224 odr_oiddup (o, oid_ent_to_oid (&attrid, oid));
226 elements[i]->which = Z_AttributeValue_numeric;
227 elements[i]->value.numeric = &attr_tmp[2*i+1];
229 elements[i]->attributeValue = &attr_tmp[2*i+1];
234 zapt->attributes = (Z_AttributeList *)
235 odr_malloc (o, sizeof(*zapt->attributes));
236 zapt->attributes->num_attributes = num_attr;
237 zapt->attributes->attributes = elements;
239 zapt->num_attributes = num_attr;
240 zapt->attributeList = elements;
244 term->which = Z_Term_general;
245 term->u.general = term_octet;
246 term_octet->buf = (unsigned char *)odr_malloc (o, li->lex_len);
247 term_octet->size = term_octet->len = li->lex_len;
248 memcpy (term_octet->buf, li->lex_buf, li->lex_len);
252 static Z_Operand *rpn_simple (struct lex_info *li, ODR o, oid_proto proto,
253 int num_attr, int *attr_list,
258 zo = (Z_Operand *)odr_malloc (o, sizeof(*zo));
259 switch (li->query_look)
262 zo->which = Z_Operand_APT;
263 if (!(zo->u.attributesPlusTerm =
264 rpn_term (li, o, proto, num_attr, attr_list, attr_set)))
272 zo->which = Z_Operand_resultSetId;
273 zo->u.resultSetId = (char *)odr_malloc (o, li->lex_len+1);
274 memcpy (zo->u.resultSetId, li->lex_buf, li->lex_len);
275 zo->u.resultSetId[li->lex_len] = '\0';
284 static Z_ProximityOperator *rpn_proximity (struct lex_info *li, ODR o)
286 Z_ProximityOperator *p = (Z_ProximityOperator *)odr_malloc (o, sizeof(*p));
290 if (*li->lex_buf == '1')
292 p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
295 else if (*li->lex_buf == '0')
297 p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
305 p->distance = (int *)odr_malloc (o, sizeof(*p->distance));
306 *p->distance = atoi (li->lex_buf);
310 p->ordered = (int *)odr_malloc (o, sizeof(*p->ordered));
311 *p->ordered = atoi (li->lex_buf);
315 p->relationType = (int *)odr_malloc (o, sizeof(*p->relationType));
316 *p->relationType = atoi (li->lex_buf);
320 if (*li->lex_buf == 'k')
322 else if (*li->lex_buf == 'p')
325 p->which = atoi (li->lex_buf);
330 p->which = Z_ProximityOperator_known;
331 p->u.known = (int *)odr_malloc (o, sizeof(*p->u.known));
332 *p->u.known = atoi (li->lex_buf);
334 p->proximityUnitCode = (int *)odr_malloc (o, sizeof(*p->proximityUnitCode));
335 *p->proximityUnitCode = atoi (li->lex_buf);
340 static Z_Complex *rpn_complex (struct lex_info *li, ODR o, oid_proto proto,
341 int num_attr, int max_attr,
342 int *attr_list, oid_value *attr_set)
347 zc = (Z_Complex *)odr_malloc (o, sizeof(*zc));
348 zo = (Z_Operator *)odr_malloc (o, sizeof(*zo));
350 switch (li->query_look)
353 zo->which = Z_Operator_and;
354 zo->u.and = odr_nullval();
357 zo->which = Z_Operator_or;
358 zo->u.and = odr_nullval();
361 zo->which = Z_Operator_and_not;
362 zo->u.and = odr_nullval();
365 zo->which = Z_Operator_prox;
366 zo->u.prox = rpn_proximity (li, o);
375 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
379 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
385 static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o,
387 int num_attr, int max_attr,
388 int *attr_list, oid_value *attr_set)
393 sz = (Z_RPNStructure *)odr_malloc (o, sizeof(*sz));
394 switch (li->query_look)
400 sz->which = Z_RPNStructure_complex;
401 if (!(sz->u.complex =
402 rpn_complex (li, o, proto, num_attr, max_attr, attr_list,
408 sz->which = Z_RPNStructure_simple;
410 rpn_simple (li, o, proto, num_attr, attr_list,
418 if (num_attr >= max_attr)
420 if (!(cp = strchr (li->lex_buf, '=')) ||
421 (size_t) (cp-li->lex_buf) > li->lex_len)
423 attr_set[num_attr] = query_oid_getvalbyname (li);
426 if (!(cp = strchr (li->lex_buf, '=')))
432 attr_set[num_attr] = attr_set[num_attr-1];
434 attr_set[num_attr] = VAL_NONE;
436 attr_list[2*num_attr] = atoi (li->lex_buf);
437 attr_list[2*num_attr+1] = atoi (cp+1);
441 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
447 if (compare_term (li, "general", 0))
448 li->term_type = Z_Term_general;
449 else if (compare_term (li, "numeric", 0))
450 li->term_type = Z_Term_numeric;
451 else if (compare_term (li, "string", 0))
452 li->term_type = Z_Term_characterString;
453 else if (compare_term (li, "oid", 0))
454 li->term_type = Z_Term_oid;
455 else if (compare_term (li, "datetime", 0))
456 li->term_type = Z_Term_dateTime;
457 else if (compare_term (li, "null", 0))
458 li->term_type = Z_Term_null;
461 rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
463 case 0: /* operator/operand expected! */
469 Z_RPNQuery *p_query_rpn_mk (ODR o, struct lex_info *li, oid_proto proto,
473 int attr_array[1024];
474 oid_value attr_set[512];
475 oid_value topSet = VAL_NONE;
479 zq = (Z_RPNQuery *)odr_malloc (o, sizeof(*zq));
481 if (li->query_look == 'r')
484 topSet = query_oid_getvalbyname (li);
485 if (topSet == VAL_NONE)
490 if (topSet == VAL_NONE)
491 topSet = p_query_dfset;
492 if (topSet == VAL_NONE)
495 oset.oclass = CLASS_ATTSET;
498 zq->attributeSetId = odr_oiddup (o, oid_ent_to_oid (&oset, oid));
500 if (!(zq->RPNStructure = rpn_structure (li, o, proto, 0, 512,
501 attr_array, attr_set)))
506 Z_RPNQuery *p_query_rpn (ODR o, oid_proto proto,
512 li.right_sep = "}\"";
513 li.escape_char = '@';
514 li.term_type = Z_Term_general;
516 return p_query_rpn_mk (o, &li, proto, qbuf);
519 Z_AttributesPlusTerm *p_query_scan_mk (struct lex_info *li,
520 ODR o, oid_proto proto,
521 Odr_oid **attributeSetP,
525 oid_value attr_set[512];
529 oid_value topSet = VAL_NONE;
534 if (li->query_look == 'r')
537 topSet = query_oid_getvalbyname (li);
541 if (topSet == VAL_NONE)
542 topSet = p_query_dfset;
543 if (topSet == VAL_NONE)
546 oset.oclass = CLASS_ATTSET;
549 *attributeSetP = odr_oiddup (o, oid_ent_to_oid (&oset, oid));
551 while (li->query_look == 'l')
556 if (num_attr >= max_attr)
559 if (!(cp = strchr (li->lex_buf, '=')) ||
560 (size_t) (cp-li->lex_buf) > li->lex_len)
562 attr_set[num_attr] = query_oid_getvalbyname (li);
565 if (!(cp = strchr (li->lex_buf, '=')))
571 attr_set[num_attr] = attr_set[num_attr-1];
573 attr_set[num_attr] = VAL_NONE;
575 attr_list[2*num_attr] = atoi (li->lex_buf);
576 attr_list[2*num_attr+1] = atoi (cp+1);
582 return rpn_term (li, o, proto, num_attr, attr_list, attr_set);
585 Z_AttributesPlusTerm *p_query_scan (ODR o, oid_proto proto,
586 Odr_oid **attributeSetP,
592 li.right_sep = "}\"";
593 li.escape_char = '@';
594 li.term_type = Z_Term_general;
597 return p_query_scan_mk (&li, o, proto, attributeSetP, qbuf);
600 int p_query_attset (const char *arg)
602 p_query_dfset = oid_getvalbyname (arg);
603 return (p_query_dfset == VAL_NONE) ? -1 : 0;