src/yaz-cql2rpn.cpp

   1 /*
   2  * Copyright (c) 1998-2004, Index Data.
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: yaz-cql2rpn.cpp,v 1.13 2007-01-16 11:54:55 adam Exp $
   6  */
   7
   8 #include <yaz/log.h>
   9 #include <yaz/pquery.h>
  10 #include <yazpp/cql2rpn.h>
  11
  12 using namespace yazpp_1;
  13
  14 Yaz_cql2rpn::Yaz_cql2rpn()
  15 {
  16     m_transform = 0;
  17 }
  18
  19 Yaz_cql2rpn::~Yaz_cql2rpn()
  20 {
  21     if (m_transform)
  22         cql_transform_close(m_transform);
  23 }
  24
  25 void Yaz_cql2rpn::set_pqf_file(const char *fname)
  26 {
  27     if (!m_transform)
  28         m_transform = cql_transform_open_fname(fname);
  29 }
  30
  31
  32 bool Yaz_cql2rpn::parse_spec_file(const char *fname, int *error)
  33 {
  34     *error = 0;
  35     cql_transform_close(m_transform);
  36     m_transform = cql_transform_open_fname(fname);
  37     return m_transform ? true : false;
  38 }
  39
  40 int Yaz_cql2rpn::query_transform(const char *cql_query,
  41                                  Z_RPNQuery **rpnquery, ODR o,
  42                                  char **addinfop)
  43 {
  44     const char *addinfo = 0;
  45     if (!m_transform)
  46         return -3;
  47     CQL_parser cp = cql_parser_create();
  48
  49     int r = cql_parser_string(cp, cql_query);
  50     if (r)
  51     {
  52         r = 10;
  53     }
  54     else
  55     {
  56         char rpn_buf[10240];
  57         r = cql_transform_buf(m_transform, cql_parser_result(cp),
  58                               rpn_buf, sizeof(rpn_buf)-1);
  59         if (!r)
  60         {
  61             YAZ_PQF_Parser pp = yaz_pqf_create();
  62
  63             *rpnquery = yaz_pqf_parse(pp, o, rpn_buf);
  64             if (!*rpnquery)
  65             {
  66                 size_t off;
  67                 const char *pqf_msg;
  68                 int code = yaz_pqf_error(pp, &pqf_msg, &off);
  69                 r = -1;
  70             }
  71             yaz_pqf_destroy(pp);
  72         }
  73         else
  74         {
  75             r = cql_transform_error(m_transform, &addinfo);
  76         }
  77     }
  78     cql_parser_destroy(cp);
  79     if (addinfo)
  80         *addinfop = odr_strdup(o, addinfo);
  81     else
  82         *addinfop = 0;
  83     return r;
  84 }
  85 /*
  86  * Local variables:
  87  * c-basic-offset: 4
  88  * indent-tabs-mode: nil
  89  * End:
  90  * vim: shiftwidth=4 tabstop=8 expandtab
  91  */
  92