+++ /dev/null
-/*
- * Copyright (c) 1995-1998, Index Data.
- * See the file LICENSE for details.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: pquery.c,v $
- * Revision 1.22 1999-04-20 09:56:49 adam
- * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
- * Modified all encoders/decoders to reflect this change.
- *
- * Revision 1.21 1998/10/13 16:03:37 adam
- * Better checking for invalid OID's in p_query_rpn.
- *
- * Revision 1.20 1998/03/31 15:13:20 adam
- * Development towards compiled ASN.1.
- *
- * Revision 1.19 1998/03/05 08:09:03 adam
- * Minor change to make C++ happy.
- *
- * Revision 1.18 1998/02/11 11:53:36 adam
- * Changed code so that it compiles as C++.
- *
- * Revision 1.17 1997/11/24 11:33:57 adam
- * Using function odr_nullval() instead of global ODR_NULLVAL when
- * appropriate.
- *
- * Revision 1.16 1997/09/29 13:19:00 adam
- * Added function, oid_ent_to_oid, to replace the function
- * oid_getoidbyent, which is not thread safe.
- *
- * Revision 1.15 1997/09/29 07:13:43 adam
- * Changed type of a few variables to avoid warnings.
- *
- * Revision 1.14 1997/09/22 12:33:41 adam
- * Fixed bug introduced by previous commit.
- *
- * Revision 1.13 1997/09/17 12:10:42 adam
- * YAZ version 1.4.
- *
- * Revision 1.12 1997/09/01 08:54:13 adam
- * New windows NT/95 port using MSV5.0. Made prefix query handling
- * thread safe. The function options ignores empty arguments when met.
- *
- * Revision 1.11 1996/11/11 13:15:29 adam
- * Added proximity operator.
- *
- * Revision 1.10 1996/08/12 14:10:35 adam
- * New function p_query_attset to define default attribute set.
- *
- * Revision 1.9 1996/03/15 11:03:46 adam
- * Attribute set can be set globally for a query with the @attrset
- * operator. The @attr operator has an optional attribute-set specifier
- * that sets the attribute set locally.
- *
- * Revision 1.8 1996/01/02 11:46:56 quinn
- * Changed 'operator' to 'roperator' to avoid C++ conflict.
- *
- * Revision 1.7 1995/09/29 17:12:36 quinn
- * Smallish
- *
- * Revision 1.6 1995/09/27 15:03:03 quinn
- * Modified function heads & prototypes.
- *
- * Revision 1.5 1995/06/15 12:31:02 quinn
- * *** empty log message ***
- *
- * Revision 1.4 1995/06/15 07:45:19 quinn
- * Moving to v3.
- *
- * Revision 1.3 1995/06/14 11:06:35 adam
- * Bug fix: Attributes wasn't interpreted correctly!
- *
- * Revision 1.2 1995/05/26 08:56:11 adam
- * New function: p_query_scan.
- *
- * Revision 1.1 1995/05/22 15:31:49 adam
- * New function, p_query_rpn, to convert from prefix (ascii) to rpn (asn).
- *
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-
-#include <proto.h>
-#include <oid.h>
-
-#include <pquery.h>
-
-static oid_value p_query_dfset = VAL_NONE;
-
-struct lex_info {
- const char *query_buf;
- const char *lex_buf;
- size_t lex_len;
- int query_look;
- char *left_sep;
- char *right_sep;
- int escape_char;
- int term_type;
-};
-
-static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o, oid_proto,
- int num_attr, int max_attr,
- int *attr_list, oid_value *attr_set);
-
-static enum oid_value query_oid_getvalbyname (struct lex_info *li)
-{
- enum oid_value value;
- char buf[32];
-
- if (li->lex_len > 31)
- return VAL_NONE;
- memcpy (buf, li->lex_buf, li->lex_len);
- buf[li->lex_len] = '\0';
- value = oid_getvalbyname (buf);
- return value;
-}
-
-static int compare_term (struct lex_info *li, const char *src, size_t off)
-{
- size_t len=strlen(src);
-
- if (li->lex_len == len+off && !memcmp (li->lex_buf+off, src, len-off))
- return 1;
- return 0;
-}
-
-static int query_token (struct lex_info *li)
-{
- const char *sep_match;
- const char **qptr = &li->query_buf;
-
- while (**qptr == ' ')
- (*qptr)++;
- if (**qptr == '\0')
- return 0;
- li->lex_len = 0;
- if ((sep_match = strchr (li->left_sep, **qptr)))
- {
- int sep_index = sep_match - li->left_sep;
-
- ++(*qptr);
- li->lex_buf = *qptr;
- while (**qptr && **qptr != li->right_sep[sep_index])
- {
- ++(li->lex_len);
- ++(*qptr);
- }
- if (**qptr)
- ++(*qptr);
- }
- else
- {
- li->lex_buf = *qptr;
- while (**qptr && **qptr != ' ')
- {
- ++(li->lex_len);
- ++(*qptr);
- }
- }
- if (li->lex_len >= 1 && li->lex_buf[0] == li->escape_char)
- {
- if (compare_term (li, "and", 1))
- return 'a';
- if (compare_term (li, "or", 1))
- return 'o';
- if (compare_term (li, "not", 1))
- return 'n';
- if (compare_term (li, "attr", 1))
- return 'l';
- if (compare_term (li, "set", 1))
- return 's';
- if (compare_term (li, "attrset", 1))
- return 'r';
- if (compare_term (li, "prox", 1))
- return 'p';
- if (compare_term (li, "term", 1))
- return 'y';
- }
- return 't';
-}
-
-static int lex (struct lex_info *li)
-{
- return li->query_look = query_token (li);
-}
-
-static Z_AttributesPlusTerm *rpn_term (struct lex_info *li, ODR o,
- oid_proto proto,
- int num_attr, int *attr_list,
- oid_value *attr_set)
-{
- Z_AttributesPlusTerm *zapt;
- Odr_oct *term_octet;
- Z_Term *term;
- Z_AttributeElement **elements;
-
- zapt = (Z_AttributesPlusTerm *)odr_malloc (o, sizeof(*zapt));
- term_octet = (Odr_oct *)odr_malloc (o, sizeof(*term_octet));
- term = (Z_Term *)odr_malloc (o, sizeof(*term));
-
- if (!num_attr)
- elements = (Z_AttributeElement**)odr_nullval();
- else
- {
- int i;
- int *attr_tmp;
-
- elements = (Z_AttributeElement**)
- odr_malloc (o, num_attr * sizeof(*elements));
-
- attr_tmp = (int *)odr_malloc (o, num_attr * 2 * sizeof(int));
- memcpy (attr_tmp, attr_list, num_attr * 2 * sizeof(int));
- for (i = 0; i < num_attr; i++)
- {
- elements[i] =
- (Z_AttributeElement*)odr_malloc (o,sizeof(**elements));
- elements[i]->attributeType = &attr_tmp[2*i];
- if (attr_set[i] == VAL_NONE)
- elements[i]->attributeSet = 0;
- else
- {
- oident attrid;
- int oid[OID_SIZE];
-
- attrid.proto = PROTO_Z3950;
- attrid.oclass = CLASS_ATTSET;
- attrid.value = attr_set[i];
-
- elements[i]->attributeSet =
- odr_oiddup (o, oid_ent_to_oid (&attrid, oid));
- }
- elements[i]->which = Z_AttributeValue_numeric;
- elements[i]->value.numeric = &attr_tmp[2*i+1];
- }
- }
-#ifdef ASN_COMPILED
- zapt->attributes = (Z_AttributeList *)
- odr_malloc (o, sizeof(*zapt->attributes));
- zapt->attributes->num_attributes = num_attr;
- zapt->attributes->attributes = elements;
-#else
- zapt->num_attributes = num_attr;
- zapt->attributeList = elements;
-#endif
-
- zapt->term = term;
- term->which = Z_Term_general;
- term->u.general = term_octet;
- term_octet->buf = (unsigned char *)odr_malloc (o, li->lex_len);
- term_octet->size = term_octet->len = li->lex_len;
- memcpy (term_octet->buf, li->lex_buf, li->lex_len);
- return zapt;
-}
-
-static Z_Operand *rpn_simple (struct lex_info *li, ODR o, oid_proto proto,
- int num_attr, int *attr_list,
- oid_value *attr_set)
-{
- Z_Operand *zo;
-
- zo = (Z_Operand *)odr_malloc (o, sizeof(*zo));
- switch (li->query_look)
- {
- case 't':
- zo->which = Z_Operand_APT;
- if (!(zo->u.attributesPlusTerm =
- rpn_term (li, o, proto, num_attr, attr_list, attr_set)))
- return NULL;
- lex (li);
- break;
- case 's':
- lex (li);
- if (!li->query_look)
- return NULL;
- zo->which = Z_Operand_resultSetId;
- zo->u.resultSetId = (char *)odr_malloc (o, li->lex_len+1);
- memcpy (zo->u.resultSetId, li->lex_buf, li->lex_len);
- zo->u.resultSetId[li->lex_len] = '\0';
- lex (li);
- break;
- default:
- return NULL;
- }
- return zo;
-}
-
-static Z_ProximityOperator *rpn_proximity (struct lex_info *li, ODR o)
-{
- Z_ProximityOperator *p = (Z_ProximityOperator *)odr_malloc (o, sizeof(*p));
-
- if (!lex (li))
- return NULL;
- if (*li->lex_buf == '1')
- {
- p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
- *p->exclusion = 1;
- }
- else if (*li->lex_buf == '0')
- {
- p->exclusion = (int *)odr_malloc (o, sizeof(*p->exclusion));
- *p->exclusion = 0;
- }
- else
- p->exclusion = NULL;
-
- if (!lex (li))
- return NULL;
- p->distance = (int *)odr_malloc (o, sizeof(*p->distance));
- *p->distance = atoi (li->lex_buf);
-
- if (!lex (li))
- return NULL;
- p->ordered = (int *)odr_malloc (o, sizeof(*p->ordered));
- *p->ordered = atoi (li->lex_buf);
-
- if (!lex (li))
- return NULL;
- p->relationType = (int *)odr_malloc (o, sizeof(*p->relationType));
- *p->relationType = atoi (li->lex_buf);
-
- if (!lex (li))
- return NULL;
- if (*li->lex_buf == 'k')
- p->which = 0;
- else if (*li->lex_buf == 'p')
- p->which = 1;
- else
- p->which = atoi (li->lex_buf);
-
- if (!lex (li))
- return NULL;
-#ifdef ASN_COMPILED
- p->which = Z_ProximityOperator_known;
- p->u.known = (int *)odr_malloc (o, sizeof(*p->u.known));
- *p->u.known = atoi (li->lex_buf);
-#else
- p->proximityUnitCode = (int *)odr_malloc (o, sizeof(*p->proximityUnitCode));
- *p->proximityUnitCode = atoi (li->lex_buf);
-#endif
- return p;
-}
-
-static Z_Complex *rpn_complex (struct lex_info *li, ODR o, oid_proto proto,
- int num_attr, int max_attr,
- int *attr_list, oid_value *attr_set)
-{
- Z_Complex *zc;
- Z_Operator *zo;
-
- zc = (Z_Complex *)odr_malloc (o, sizeof(*zc));
- zo = (Z_Operator *)odr_malloc (o, sizeof(*zo));
- zc->roperator = zo;
- switch (li->query_look)
- {
- case 'a':
- zo->which = Z_Operator_and;
- zo->u.and = odr_nullval();
- break;
- case 'o':
- zo->which = Z_Operator_or;
- zo->u.and = odr_nullval();
- break;
- case 'n':
- zo->which = Z_Operator_and_not;
- zo->u.and = odr_nullval();
- break;
- case 'p':
- zo->which = Z_Operator_prox;
- zo->u.prox = rpn_proximity (li, o);
- if (!zo->u.prox)
- return NULL;
- break;
- default:
- return NULL;
- }
- lex (li);
- if (!(zc->s1 =
- rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
- attr_set)))
- return NULL;
- if (!(zc->s2 =
- rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
- attr_set)))
- return NULL;
- return zc;
-}
-
-static Z_RPNStructure *rpn_structure (struct lex_info *li, ODR o,
- oid_proto proto,
- int num_attr, int max_attr,
- int *attr_list, oid_value *attr_set)
-{
- Z_RPNStructure *sz;
- const char *cp;
-
- sz = (Z_RPNStructure *)odr_malloc (o, sizeof(*sz));
- switch (li->query_look)
- {
- case 'a':
- case 'o':
- case 'n':
- case 'p':
- sz->which = Z_RPNStructure_complex;
- if (!(sz->u.complex =
- rpn_complex (li, o, proto, num_attr, max_attr, attr_list,
- attr_set)))
- return NULL;
- break;
- case 't':
- case 's':
- sz->which = Z_RPNStructure_simple;
- if (!(sz->u.simple =
- rpn_simple (li, o, proto, num_attr, attr_list,
- attr_set)))
- return NULL;
- break;
- case 'l':
- lex (li);
- if (!li->query_look)
- return NULL;
- if (num_attr >= max_attr)
- return NULL;
- if (!(cp = strchr (li->lex_buf, '=')) ||
- (size_t) (cp-li->lex_buf) > li->lex_len)
- {
- attr_set[num_attr] = query_oid_getvalbyname (li);
- if (attr_set[num_attr] == VAL_NONE)
- return NULL;
- lex (li);
-
- if (!(cp = strchr (li->lex_buf, '=')))
- return NULL;
- }
- else
- {
- if (num_attr > 0)
- attr_set[num_attr] = attr_set[num_attr-1];
- else
- attr_set[num_attr] = VAL_NONE;
- }
- attr_list[2*num_attr] = atoi (li->lex_buf);
- attr_list[2*num_attr+1] = atoi (cp+1);
- num_attr++;
- lex (li);
- return
- rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
- attr_set);
- case 'y':
- lex (li);
- if (!li->query_look)
- return NULL;
- if (compare_term (li, "general", 0))
- li->term_type = Z_Term_general;
- else if (compare_term (li, "numeric", 0))
- li->term_type = Z_Term_numeric;
- else if (compare_term (li, "string", 0))
- li->term_type = Z_Term_characterString;
- else if (compare_term (li, "oid", 0))
- li->term_type = Z_Term_oid;
- else if (compare_term (li, "datetime", 0))
- li->term_type = Z_Term_dateTime;
- else if (compare_term (li, "null", 0))
- li->term_type = Z_Term_null;
- lex (li);
- return
- rpn_structure (li, o, proto, num_attr, max_attr, attr_list,
- attr_set);
- case 0: /* operator/operand expected! */
- return NULL;
- }
- return sz;
-}
-
-Z_RPNQuery *p_query_rpn_mk (ODR o, struct lex_info *li, oid_proto proto,
- const char *qbuf)
-{
- Z_RPNQuery *zq;
- int attr_array[1024];
- oid_value attr_set[512];
- oid_value topSet = VAL_NONE;
- oident oset;
- int oid[OID_SIZE];
-
- zq = (Z_RPNQuery *)odr_malloc (o, sizeof(*zq));
- lex (li);
- if (li->query_look == 'r')
- {
- lex (li);
- topSet = query_oid_getvalbyname (li);
- if (topSet == VAL_NONE)
- return NULL;
-
- lex (li);
- }
- if (topSet == VAL_NONE)
- topSet = p_query_dfset;
- if (topSet == VAL_NONE)
- topSet = VAL_BIB1;
- oset.proto = proto;
- oset.oclass = CLASS_ATTSET;
- oset.value = topSet;
-
- if (!oid_ent_to_oid (&oset, oid))
- return NULL;
- zq->attributeSetId = odr_oiddup (o, oid);
-
- if (!(zq->RPNStructure = rpn_structure (li, o, proto, 0, 512,
- attr_array, attr_set)))
- return NULL;
- return zq;
-}
-
-Z_RPNQuery *p_query_rpn (ODR o, oid_proto proto,
- const char *qbuf)
-{
- struct lex_info li;
-
- li.left_sep = "{\"";
- li.right_sep = "}\"";
- li.escape_char = '@';
- li.term_type = Z_Term_general;
- li.query_buf = qbuf;
- return p_query_rpn_mk (o, &li, proto, qbuf);
-}
-
-Z_AttributesPlusTerm *p_query_scan_mk (struct lex_info *li,
- ODR o, oid_proto proto,
- Odr_oid **attributeSetP,
- const char *qbuf)
-{
- int attr_list[1024];
- oid_value attr_set[512];
- int num_attr = 0;
- int max_attr = 512;
- const char *cp;
- oid_value topSet = VAL_NONE;
- oident oset;
- int oid[OID_SIZE];
-
- lex (li);
- if (li->query_look == 'r')
- {
- lex (li);
- topSet = query_oid_getvalbyname (li);
-
- lex (li);
- }
- if (topSet == VAL_NONE)
- topSet = p_query_dfset;
- if (topSet == VAL_NONE)
- topSet = VAL_BIB1;
- oset.proto = proto;
- oset.oclass = CLASS_ATTSET;
- oset.value = topSet;
-
- *attributeSetP = odr_oiddup (o, oid_ent_to_oid (&oset, oid));
-
- while (li->query_look == 'l')
- {
- lex (li);
- if (!li->query_look)
- return NULL;
- if (num_attr >= max_attr)
- return NULL;
-
- if (!(cp = strchr (li->lex_buf, '=')) ||
- (size_t) (cp-li->lex_buf) > li->lex_len)
- {
- attr_set[num_attr] = query_oid_getvalbyname (li);
- lex (li);
-
- if (!(cp = strchr (li->lex_buf, '=')))
- return NULL;
- }
- else
- {
- if (num_attr > 0)
- attr_set[num_attr] = attr_set[num_attr-1];
- else
- attr_set[num_attr] = VAL_NONE;
- }
- attr_list[2*num_attr] = atoi (li->lex_buf);
- attr_list[2*num_attr+1] = atoi (cp+1);
- num_attr++;
- lex (li);
- }
- if (!li->query_look)
- return NULL;
- return rpn_term (li, o, proto, num_attr, attr_list, attr_set);
-}
-
-Z_AttributesPlusTerm *p_query_scan (ODR o, oid_proto proto,
- Odr_oid **attributeSetP,
- const char *qbuf)
-{
- struct lex_info li;
-
- li.left_sep = "{\"";
- li.right_sep = "}\"";
- li.escape_char = '@';
- li.term_type = Z_Term_general;
- li.query_buf = qbuf;
-
- return p_query_scan_mk (&li, o, proto, attributeSetP, qbuf);
-}
-
-int p_query_attset (const char *arg)
-{
- p_query_dfset = oid_getvalbyname (arg);
- return (p_query_dfset == VAL_NONE) ? -1 : 0;
-}
-
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