src/querytowrbuf.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2013 Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /** \file querytowrbuf.c
   6     \brief Convert Z39.50 Z_Query to PQF (as WRBUF string)
   7  */
   8 #if HAVE_CONFIG_H
   9 #include <config.h>
  10 #endif
  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 void yaz_encode_pqf_term(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 (len > 0 && i == len)
  26     {
  27         if (term[0] == '@')
  28             wrbuf_putc(b, '\\');
  29         for (i = 0; i < len; i++)
  30         {
  31             if (term[i] == '\\')
  32                 wrbuf_putc(b, '\\');
  33             wrbuf_putc(b, term[i]);
  34         }
  35     }
  36     else
  37     {
  38         wrbuf_putc(b, '"');
  39         for (i = 0; i < len; i++)
  40         {
  41             if (term[i] == '"' || term[i] == '\\')
  42                 wrbuf_putc(b, '\\');
  43             wrbuf_putc(b, term[i]);
  44         }
  45         wrbuf_putc(b, '"');
  46     }
  47     wrbuf_putc(b, ' ');
  48 }
  49
  50 static void yaz_attribute_element_to_wrbuf(WRBUF b,
  51                                            const Z_AttributeElement *element)
  52 {
  53     int i;
  54
  55     wrbuf_puts(b, "@attr ");
  56     if (element->attributeSet)
  57     {
  58         char oid_name_str[OID_STR_MAX];
  59         const char *setname = yaz_oid_to_string_buf(element->attributeSet,
  60                                                     0, oid_name_str);
  61         if (setname)
  62         {
  63             wrbuf_puts(b, setname);
  64             wrbuf_puts(b, " ");
  65         }
  66     }
  67     wrbuf_printf(b, ODR_INT_PRINTF "=", *element->attributeType);
  68     switch (element->which)
  69     {
  70     case Z_AttributeValue_numeric:
  71         wrbuf_printf(b, ODR_INT_PRINTF, *element->value.numeric);
  72         break;
  73     case Z_AttributeValue_complex:
  74         for (i = 0; i < element->value.complex->num_list; i++)
  75         {
  76             if (i)
  77                 wrbuf_puts(b, ",");
  78             if (element->value.complex->list[i]->which ==
  79                 Z_StringOrNumeric_string)
  80                 wrbuf_puts(b, element->value.complex->list[i]->u.string);
  81             else if (element->value.complex->list[i]->which ==
  82                      Z_StringOrNumeric_numeric)
  83                 wrbuf_printf(b, ODR_INT_PRINTF,
  84                              *element->value.complex->list[i]->u.numeric);
  85         }
  86         break;
  87     default:
  88         wrbuf_puts(b, "@attr 1=unknown");
  89     }
  90     wrbuf_puts(b, " ");
  91 }
  92
  93 static const char *complex_op_name(const Z_Operator *op)
  94 {
  95     switch (op->which)
  96     {
  97     case Z_Operator_and:
  98         return "and";
  99     case Z_Operator_or:
 100         return "or";
 101     case Z_Operator_and_not:
 102         return "not";
 103     case Z_Operator_prox:
 104         return "prox";
 105     default:
 106         return "unknown complex operator";
 107     }
 108 }
 109
 110 static void yaz_apt_to_wrbuf(WRBUF b, const Z_AttributesPlusTerm *zapt)
 111 {
 112     int num_attributes = zapt->attributes->num_attributes;
 113     int i;
 114     for (i = 0; i < num_attributes; i++)
 115         yaz_attribute_element_to_wrbuf(b,zapt->attributes->attributes[i]);
 116
 117     switch (zapt->term->which)
 118     {
 119     case Z_Term_general:
 120         yaz_encode_pqf_term(b, (const char *)zapt->term->u.general->buf,
 121                             zapt->term->u.general->len);
 122         break;
 123     case Z_Term_characterString:
 124         wrbuf_puts(b, "@term string ");
 125         yaz_encode_pqf_term(b, zapt->term->u.characterString,
 126                             strlen(zapt->term->u.characterString));
 127         break;
 128     case Z_Term_numeric:
 129         wrbuf_printf(b, "@term numeric " ODR_INT_PRINTF " ",
 130                      *zapt->term->u.numeric);
 131         break;
 132     case Z_Term_null:
 133         wrbuf_puts(b, "@term null x");
 134         break;
 135     default:
 136         wrbuf_printf(b, "@term null unknown%d ", zapt->term->which);
 137     }
 138 }
 139
 140 static void yaz_rpnstructure_to_wrbuf(WRBUF b, const Z_RPNStructure *zs)
 141 {
 142     if (zs->which == Z_RPNStructure_complex)
 143     {
 144         Z_Operator *op = zs->u.complex->roperator;
 145         wrbuf_printf(b, "@%s ", complex_op_name(op) );
 146         if (op->which== Z_Operator_prox)
 147         {
 148             if (!op->u.prox->exclusion)
 149                 wrbuf_putc(b, 'n');
 150             else if (*op->u.prox->exclusion)
 151                 wrbuf_putc(b, '1');
 152             else
 153                 wrbuf_putc(b, '0');
 154
 155             wrbuf_printf(b, " " ODR_INT_PRINTF " %d "
 156                          ODR_INT_PRINTF " ", *op->u.prox->distance,
 157                          *op->u.prox->ordered,
 158                          *op->u.prox->relationType);
 159
 160             switch(op->u.prox->which)
 161             {
 162             case Z_ProximityOperator_known:
 163                 wrbuf_putc(b, 'k');
 164                 break;
 165             case Z_ProximityOperator_private:
 166                 wrbuf_putc(b, 'p');
 167                 break;
 168             default:
 169                 wrbuf_printf(b, "%d", op->u.prox->which);
 170             }
 171             if (op->u.prox->u.known)
 172                 wrbuf_printf(b, " " ODR_INT_PRINTF " ", *op->u.prox->u.known);
 173             else
 174                 wrbuf_printf(b, " 0 ");
 175         }
 176         yaz_rpnstructure_to_wrbuf(b,zs->u.complex->s1);
 177         yaz_rpnstructure_to_wrbuf(b,zs->u.complex->s2);
 178     }
 179     else if (zs->which == Z_RPNStructure_simple)
 180     {
 181         if (zs->u.simple->which == Z_Operand_APT)
 182             yaz_apt_to_wrbuf(b, zs->u.simple->u.attributesPlusTerm);
 183         else if (zs->u.simple->which == Z_Operand_resultSetId)
 184         {
 185             wrbuf_printf(b, "@set ");
 186             yaz_encode_pqf_term(b, zs->u.simple->u.resultSetId,
 187                                 strlen(zs->u.simple->u.resultSetId));
 188         }
 189         else
 190             wrbuf_puts(b, "(unknown simple structure)");
 191     }
 192     else
 193         wrbuf_puts(b, "(unknown structure)");
 194 }
 195
 196 void yaz_rpnquery_to_wrbuf(WRBUF b, const Z_RPNQuery *rpn)
 197 {
 198     if (rpn->attributeSetId)
 199     {
 200         char oid_name_str[OID_STR_MAX];
 201         const char *oid_name = yaz_oid_to_string_buf(rpn->attributeSetId,
 202                                                      0, oid_name_str);
 203         if (oid_name)
 204             wrbuf_printf(b, "@attrset %s ", oid_name);
 205     }
 206     yaz_rpnstructure_to_wrbuf(b, rpn->RPNStructure);
 207     wrbuf_chop_right(b);
 208 }
 209
 210 void yaz_query_to_wrbuf(WRBUF b, const Z_Query *q)
 211 {
 212     assert(q);
 213     assert(b);
 214     switch (q->which)
 215     {
 216     case Z_Query_type_1:
 217     case Z_Query_type_101:
 218         wrbuf_puts(b,"RPN ");
 219         yaz_rpnquery_to_wrbuf(b, q->u.type_1);
 220         break;
 221     case Z_Query_type_2:
 222         wrbuf_puts(b, "CCL ");
 223         wrbuf_write(b, (const char *) q->u.type_2->buf, q->u.type_2->len);
 224         break;
 225     case Z_Query_type_100:
 226         wrbuf_puts(b, "Z39.58 ");
 227         wrbuf_write(b, (const char *) q->u.type_100->buf, q->u.type_100->len);
 228         break;
 229     case Z_Query_type_104:
 230         if (q->u.type_104->which == Z_External_CQL)
 231         {
 232             wrbuf_puts(b, "CQL ");
 233             wrbuf_puts(b, q->u.type_104->u.cql);
 234         }
 235         else
 236             wrbuf_printf(b,"UNKNOWN type 104 query %d", q->u.type_104->which);
 237     }
 238 }
 239
 240 void yaz_scan_to_wrbuf(WRBUF b, const Z_AttributesPlusTerm *zapt,
 241                        const Odr_oid *attrbute_set)
 242 {
 243     /* should print attr set here */
 244     wrbuf_puts(b, "RPN ");
 245     yaz_apt_to_wrbuf(b, zapt);
 246 }
 247
 248 void wrbuf_diags(WRBUF b, int num_diagnostics, Z_DiagRec **diags)
 249 {
 250     /* we only dump the first diag - that keeps the log cleaner. */
 251     wrbuf_puts(b," ERROR ");
 252     if (diags[0]->which != Z_DiagRec_defaultFormat)
 253         wrbuf_puts(b,"(diag not in default format?)");
 254     else
 255     {
 256         Z_DefaultDiagFormat *e = diags[0]->u.defaultFormat;
 257         if (e->condition)
 258             wrbuf_printf(b, ODR_INT_PRINTF " ",*e->condition);
 259         else
 260             wrbuf_puts(b, "?? ");
 261         if ((e->which==Z_DefaultDiagFormat_v2Addinfo) && (e->u.v2Addinfo))
 262             wrbuf_puts(b, e->u.v2Addinfo);
 263         else if ((e->which==Z_DefaultDiagFormat_v3Addinfo) && (e->u.v3Addinfo))
 264             wrbuf_puts(b, e->u.v3Addinfo);
 265         wrbuf_puts(b, " ");
 266     }
 267 }
 268
 269 /*
 270  * Local variables:
 271  * c-basic-offset: 4
 272  * c-file-style: "Stroustrup"
 273  * indent-tabs-mode: nil
 274  * End:
 275  * vim: shiftwidth=4 tabstop=8 expandtab
 276  */
 277