/*
- * Copyright (c) 1995, Index Data.
+ * Copyright (c) 1995-1997, Index Data.
* See the file LICENSE for details.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: pquery.c,v $
- * Revision 1.3 1995-06-14 11:06:35 adam
+ * 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
#include <pquery.h>
-static const char *query_buf;
-static const char *query_lex_buf;
-static int query_lex_len;
-static int query_look = 0;
-static char *left_sep = "{\"";
-static char *right_sep = "}\"";
-static int escape_char = '@';
+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)
+{
+ char buf[32];
+
+ if (li->lex_len > 31)
+ return VAL_NONE;
+ memcpy (buf, li->lex_buf, li->lex_len);
+ buf[li->lex_len] = '\0';
+ return oid_getvalbyname (buf);
+}
+
+static int compare_term (struct lex_info *li, const char *src, size_t off)
+{
+ size_t len=strlen(src);
-static Z_RPNStructure *rpn_structure (ODR o, int num_attr, int max_attr,
- int *attr_list);
+ if (li->lex_len == len+off && !memcmp (li->lex_buf+off, src, len-off))
+ return 1;
+ return 0;
+}
-static int query_token (const char **qptr, const char **lex_buf, int *lex_len)
+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;
- *lex_len = 0;
- if ((sep_match = strchr (left_sep, **qptr)))
+ li->lex_len = 0;
+ if ((sep_match = strchr (li->left_sep, **qptr)))
{
- int sep_index = sep_match - left_sep;
+ int sep_index = sep_match - li->left_sep;
++(*qptr);
- *lex_buf = *qptr;
- while (**qptr && **qptr != right_sep[sep_index])
+ li->lex_buf = *qptr;
+ while (**qptr && **qptr != li->right_sep[sep_index])
{
- ++(*lex_len);
+ ++(li->lex_len);
++(*qptr);
}
if (**qptr)
}
else
{
- *lex_buf = *qptr;
+ li->lex_buf = *qptr;
while (**qptr && **qptr != ' ')
{
- ++(*lex_len);
+ ++(li->lex_len);
++(*qptr);
}
}
- if (*lex_len >= 1 && (*lex_buf)[0] == escape_char)
+ if (li->lex_len >= 1 && li->lex_buf[0] == li->escape_char)
{
- if (*lex_len == 4 && !memcmp (*lex_buf+1, "and", 3))
- return 'a';
- if (*lex_len == 3 && !memcmp (*lex_buf+1, "or", 2))
+ if (compare_term (li, "and", 1))
+ return 'a';
+ if (compare_term (li, "or", 1))
return 'o';
- if (*lex_len == 4 && !memcmp (*lex_buf+1, "not", 3))
+ if (compare_term (li, "not", 1))
return 'n';
- if (*lex_len == 5 && !memcmp (*lex_buf+1, "attr", 4))
+ if (compare_term (li, "attr", 1))
return 'l';
- if (*lex_len == 4 && !memcmp (*lex_buf+1, "set", 3))
+ 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 (void)
+static int lex (struct lex_info *li)
{
- return query_look =
- query_token (&query_buf, &query_lex_buf, &query_lex_len);
+ return li->query_look = query_token (li);
}
-static Z_AttributesPlusTerm *rpn_term (ODR o, int num_attr, int *attr_list)
+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;
- zapt = odr_malloc (o, sizeof(*zapt));
- term_octet = odr_malloc (o, sizeof(*term_octet));
- term = odr_malloc (o, sizeof(*term));
+ 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));
zapt->num_attributes = num_attr;
if (num_attr)
int i;
int *attr_tmp;
- zapt->attributeList = odr_malloc (o, num_attr *
+ zapt->attributeList = (Z_AttributeElement**)odr_malloc (o, num_attr *
sizeof(*zapt->attributeList));
- attr_tmp = odr_malloc (o, num_attr * 2 * sizeof(int));
+ 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++)
{
zapt->attributeList[i] =
- odr_malloc (o,sizeof(**zapt->attributeList));
+ (Z_AttributeElement*)odr_malloc (o,sizeof(**zapt->attributeList));
zapt->attributeList[i]->attributeType = &attr_tmp[2*i];
+#ifdef Z_95
+ if (attr_set[i] == VAL_NONE)
+ zapt->attributeList[i]->attributeSet = 0;
+ else
+ {
+ oident attrid;
+ int oid[OID_SIZE];
+
+ attrid.proto = PROTO_Z3950;
+ attrid.oclass = CLASS_ATTSET;
+ attrid.value = attr_set[i];
+
+ zapt->attributeList[i]->attributeSet =
+ odr_oiddup (o, oid_ent_to_oid (&attrid, oid));
+ }
+ zapt->attributeList[i]->which = Z_AttributeValue_numeric;
+ zapt->attributeList[i]->value.numeric = &attr_tmp[2*i+1];
+#else
zapt->attributeList[i]->attributeValue = &attr_tmp[2*i+1];
+#endif
}
}
else
- zapt->attributeList = ODR_NULLVAL;
+ zapt->attributeList = (Z_AttributeElement**)odr_nullval();
zapt->term = term;
term->which = Z_Term_general;
term->u.general = term_octet;
- term_octet->buf = odr_malloc (o, query_lex_len);
- term_octet->size = term_octet->len = query_lex_len;
- memcpy (term_octet->buf, query_lex_buf, query_lex_len);
+ 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 (ODR o, int num_attr, int *attr_list)
+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 = odr_malloc (o, sizeof(*zo));
- switch (query_look)
+ 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 (o, num_attr, attr_list)))
+ if (!(zo->u.attributesPlusTerm =
+ rpn_term (li, o, proto, num_attr, attr_list, attr_set)))
return NULL;
- lex ();
+ lex (li);
break;
case 's':
- lex ();
- if (!query_look)
+ lex (li);
+ if (!li->query_look)
return NULL;
zo->which = Z_Operand_resultSetId;
- zo->u.resultSetId = odr_malloc (o, query_lex_len+1);
- memcpy (zo->u.resultSetId, query_lex_buf, query_lex_len);
- zo->u.resultSetId[query_lex_len] = '\0';
- lex ();
+ 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_Complex *rpn_complex (ODR o, int num_attr, int max_attr,
- int *attr_list)
+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;
+ p->proximityUnitCode = (int *)odr_malloc (o, sizeof(*p->proximityUnitCode));
+ *p->proximityUnitCode = atoi (li->lex_buf);
+
+ 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 = odr_malloc (o, sizeof(*zc));
- zo = odr_malloc (o, sizeof(*zo));
- zc->operator = zo;
- switch (query_look)
+ 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;
+ zo->u.and = odr_nullval();
break;
case 'o':
zo->which = Z_Operator_or;
- zo->u.and = ODR_NULLVAL;
+ zo->u.and = odr_nullval();
break;
case 'n':
zo->which = Z_Operator_and_not;
- zo->u.and = ODR_NULLVAL;
+ 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 ();
- if (!(zc->s1 = rpn_structure (o, num_attr, max_attr, attr_list)))
+ 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 (o, num_attr, max_attr, attr_list)))
+ 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 (ODR o, int num_attr, int max_attr,
- int *attr_list)
+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 = odr_malloc (o, sizeof(*sz));
- switch (query_look)
+ 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 (o, num_attr, max_attr, attr_list)))
+ 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 (o, num_attr, attr_list)))
+ if (!(sz->u.simple =
+ rpn_simple (li, o, proto, num_attr, attr_list,
+ attr_set)))
return NULL;
break;
case 'l':
- lex ();
- if (!query_look)
- return NULL;
- if (!(cp = strchr (query_lex_buf, '=')))
+ lex (li);
+ if (!li->query_look)
return NULL;
if (num_attr >= max_attr)
return NULL;
- attr_list[2*num_attr] = atoi (query_lex_buf);
+ 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 ();
- return rpn_structure (o, num_attr, max_attr, attr_list);
+ 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 (ODR o, const char *qbuf)
+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;
+
+ zq->attributeSetId = odr_oiddup (o, oid_ent_to_oid (&oset, oid));
- query_buf = qbuf;
- zq = odr_malloc (o, sizeof(*zq));
- zq->attributeSetId = NULL;
- lex ();
- if (!(zq->RPNStructure = rpn_structure (o, 0, 512, attr_array)))
+ if (!(zq->RPNStructure = rpn_structure (li, o, proto, 0, 512,
+ attr_array, attr_set)))
return NULL;
return zq;
}
-Z_AttributesPlusTerm *p_query_scan (ODR o, const char *qbuf)
+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];
- query_buf = qbuf;
- while (lex() == 'l')
+ lex (li);
+ if (li->query_look == 'r')
{
- lex ();
- if (!query_look)
- return NULL;
- if (!(cp = strchr (query_lex_buf, '=')))
+ 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;
- attr_list[2*num_attr] = atoi (query_lex_buf);
+
+ 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 (!query_look)
+ if (!li->query_look)
return NULL;
- return rpn_term (o, num_attr, attr_list);
+ 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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