src/querytowrbuf.c

   1 /*
   2  * Copyright (C) 1995-2007, Index Data ApS
   3  * All rights reserved.
   4  *
   5  * $Id: querytowrbuf.c,v 1.9 2007-04-12 13:52:57 adam Exp $
   6  */
   7
   8 /** \file querytowrbuf.c
   9     \brief Query to WRBUF (to strings)
  10  */
  11
  12 #include <stdio.h>
  13 #include <assert.h>
  14
  15 #include <yaz/logrpn.h>
  16 #include <yaz/querytowrbuf.h>
  17 #include <yaz/oid_db.h>
  18
  19 static void yaz_term_to_wrbuf(WRBUF b, const char *term, int len)
  20 {
  21     int i;
  22     for (i = 0; i < len; i++)
  23         if (strchr(" \"{", term[i]))
  24             break;
  25     if (i == len && i)
  26         wrbuf_printf(b, "%.*s ", len, term);
  27     else
  28     {
  29         wrbuf_putc(b, '"');
  30         for (i = 0; i<len; i++)
  31         {
  32             if (term[i] == '"')
  33                 wrbuf_putc(b, '\\');
  34             wrbuf_putc(b, term[i]);
  35         }
  36         wrbuf_printf(b, "\" ");
  37     }
  38 }
  39
  40 static void yaz_attribute_element_to_wrbuf(WRBUF b,
  41                                            const Z_AttributeElement *element)
  42 {
  43     int i;
  44     char oid_name_str[OID_STR_MAX];
  45     const char *setname = 0;
  46     char *sep = " "; /* optional space after attrset name */
  47     if (element->attributeSet)
  48     {
  49         setname = yaz_oid_to_string_buf(element->attributeSet,
  50                                         0, oid_name_str);
  51     }
  52     if (!setname)
  53     {
  54         setname = "";
  55         sep = "";
  56     }
  57     switch (element->which)
  58     {
  59     case Z_AttributeValue_numeric:
  60         wrbuf_printf(b,"@attr %s%s%d=%d ", setname, sep,
  61                      *element->attributeType, *element->value.numeric);
  62         break;
  63     case Z_AttributeValue_complex:
  64         wrbuf_printf(b,"@attr %s%s\"%d=", setname, sep,
  65                      *element->attributeType);
  66         for (i = 0; i<element->value.complex->num_list; i++)
  67         {
  68             if (i)
  69                 wrbuf_printf(b,",");
  70             if (element->value.complex->list[i]->which ==
  71                 Z_StringOrNumeric_string)
  72                 wrbuf_printf (b, "%s",
  73                               element->value.complex->list[i]->u.string);
  74             else if (element->value.complex->list[i]->which ==
  75                      Z_StringOrNumeric_numeric)
  76                 wrbuf_printf (b, "%d",
  77                               *element->value.complex->list[i]->u.numeric);
  78         }
  79         wrbuf_printf(b, "\" ");
  80         break;
  81     default:
  82         wrbuf_printf (b, "@attr 1=unknown ");
  83     }
  84 }
  85
  86 static const char *complex_op_name(const Z_Operator *op)
  87 {
  88     switch (op->which)
  89     {
  90     case Z_Operator_and:
  91         return "and";
  92     case Z_Operator_or:
  93         return "or";
  94     case Z_Operator_and_not:
  95         return "not";
  96     case Z_Operator_prox:
  97         return "prox";
  98     default:
  99         return "unknown complex operator";
 100     }
 101 }
 102
 103 static void yaz_apt_to_wrbuf(WRBUF b, const Z_AttributesPlusTerm *zapt)
 104 {
 105     int num_attributes = zapt->attributes->num_attributes;
 106     int i;
 107     for (i = 0; i<num_attributes; i++)
 108         yaz_attribute_element_to_wrbuf(b,zapt->attributes->attributes[i]);
 109
 110     switch (zapt->term->which)
 111     {
 112     case Z_Term_general:
 113         yaz_term_to_wrbuf(b, (const char *)zapt->term->u.general->buf,
 114                           zapt->term->u.general->len);
 115         break;
 116     case Z_Term_characterString:
 117         wrbuf_printf(b, "@term string ");
 118         yaz_term_to_wrbuf(b, zapt->term->u.characterString,
 119                           strlen(zapt->term->u.characterString));
 120         break;
 121     case Z_Term_numeric:
 122         wrbuf_printf(b, "@term numeric %d ", *zapt->term->u.numeric);
 123         break;
 124     case Z_Term_null:
 125         wrbuf_printf(b, "@term null x");
 126         break;
 127     default:
 128         wrbuf_printf(b, "@term null unknown%d ", zapt->term->which);
 129     }
 130 }
 131
 132 static void yaz_rpnstructure_to_wrbuf(WRBUF b, const Z_RPNStructure *zs)
 133 {
 134     if (zs->which == Z_RPNStructure_complex)
 135     {
 136         Z_Operator *op = zs->u.complex->roperator;
 137         wrbuf_printf(b, "@%s ", complex_op_name(op) );
 138         if (op->which== Z_Operator_prox)
 139         {
 140             if (!op->u.prox->exclusion)
 141                 wrbuf_putc(b, 'n');
 142             else if (*op->u.prox->exclusion)
 143                 wrbuf_putc(b, '1');
 144             else
 145                 wrbuf_putc(b, '0');
 146
 147             wrbuf_printf(b, " %d %d %d ", *op->u.prox->distance,
 148                          *op->u.prox->ordered,
 149                          *op->u.prox->relationType);
 150
 151             switch(op->u.prox->which)
 152             {
 153             case Z_ProximityOperator_known:
 154                 wrbuf_putc(b, 'k');
 155                 break;
 156             case Z_ProximityOperator_private:
 157                 wrbuf_putc(b, 'p');
 158                 break;
 159             default:
 160                 wrbuf_printf(b, "%d", op->u.prox->which);
 161             }
 162             if (op->u.prox->u.known)
 163                 wrbuf_printf(b, " %d ", *op->u.prox->u.known);
 164             else
 165                 wrbuf_printf(b, " 0 ");
 166         }
 167         yaz_rpnstructure_to_wrbuf(b,zs->u.complex->s1);
 168         yaz_rpnstructure_to_wrbuf(b,zs->u.complex->s2);
 169     }
 170     else if (zs->which == Z_RPNStructure_simple)
 171     {
 172         if (zs->u.simple->which == Z_Operand_APT)
 173             yaz_apt_to_wrbuf(b, zs->u.simple->u.attributesPlusTerm);
 174         else if (zs->u.simple->which == Z_Operand_resultSetId)
 175         {
 176             wrbuf_printf(b, "@set ");
 177             yaz_term_to_wrbuf(b, zs->u.simple->u.resultSetId,
 178                               strlen(zs->u.simple->u.resultSetId));
 179         }
 180         else
 181             wrbuf_printf (b, "(unknown simple structure)");
 182     }
 183     else
 184         wrbuf_puts(b, "(unknown structure)");
 185 }
 186
 187 void yaz_rpnquery_to_wrbuf(WRBUF b, const Z_RPNQuery *rpn)
 188 {
 189     if (rpn->attributeSetId)
 190     {
 191         char oid_name_str[OID_STR_MAX];
 192         const char *oid_name = yaz_oid_to_string_buf(rpn->attributeSetId,
 193                                                      0, oid_name_str);
 194         if (oid_name)
 195             wrbuf_printf(b, "@attrset %s ", oid_name);
 196     }
 197     yaz_rpnstructure_to_wrbuf(b, rpn->RPNStructure);
 198     wrbuf_chop_right(b);
 199 }
 200
 201 void yaz_query_to_wrbuf(WRBUF b, const Z_Query *q)
 202 {
 203     assert(q);
 204     assert(b);
 205     switch (q->which)
 206     {
 207     case Z_Query_type_1:
 208     case Z_Query_type_101:
 209         wrbuf_printf(b,"RPN ");
 210         yaz_rpnquery_to_wrbuf(b, q->u.type_1);
 211         break;
 212     case Z_Query_type_2:
 213         wrbuf_printf(b, "CCL %.*s", q->u.type_2->len, q->u.type_2->buf);
 214         break;
 215     case Z_Query_type_100:
 216         wrbuf_printf(b, "Z39.58 %.*s", q->u.type_100->len,
 217                      q->u.type_100->buf);
 218         break;
 219     case Z_Query_type_104:
 220         if (q->u.type_104->which == Z_External_CQL)
 221             wrbuf_printf(b, "CQL %s", q->u.type_104->u.cql);
 222         else
 223             wrbuf_printf(b,"UNKNOWN type 104 query %d", q->u.type_104->which);
 224     }
 225 }
 226
 227 void yaz_scan_to_wrbuf(WRBUF b, const Z_AttributesPlusTerm *zapt,
 228                        const int *attrbute_set)
 229 {
 230     /* should print attr set here */
 231     wrbuf_printf(b, "RPN ");
 232     yaz_apt_to_wrbuf(b, zapt);
 233 }
 234
 235 /*
 236  * Local variables:
 237  * c-basic-offset: 4
 238  * indent-tabs-mode: nil
 239  * End:
 240  * vim: shiftwidth=4 tabstop=8 expandtab
 241  */
 242