Fix crash that occured for string-queries in database that didn't have them

[idzebra-moved-to-github.git] / index / zrpn.c

diff --git a/index/zrpn.c b/index/zrpn.c
index 9d6b8c6..badb91e 100644 (file)
--- a/index/zrpn.c
+++ b/index/zrpn.c
@@ -1,10 +1,26 @@
-/*
- * Copyright (C) 1995-2002, Index Data
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Id: zrpn.c,v 1.118 2002-08-01 08:53:35 adam Exp $
- */
+/* $Id: zrpn.c,v 1.121 2002-08-23 14:30:51 adam Exp $
+   Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
+   Index Data Aps
+
+This file is part of the Zebra server.
+
+Zebra is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Zebra; see the file LICENSE.zebra.  If not, write to the
+Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+*/
+
+
 #include <stdio.h>
 #include <assert.h>
 #ifdef WIN32
@@ -2081,6 +2097,7 @@ static int parse_xpath(ZebraHandle zh, Z_AttributesPlusTerm *zapt,
                     if (i)
                         memcpy (p->u.relation.value, cp - i, i);
                     p->u.relation.value[i] = 0;
+                    yaz_log (LOG_LOG, "value=%s", p->u.relation.value);
 
                     cp++;
                 }                           
@@ -2119,12 +2136,28 @@ static RSET xpath_trunc(ZebraHandle zh, NMEM stream,
     int prefix_len = 0;
     int ord = zebraExplain_lookupSU (zh->reg->zei, curAttributeSet, use);
     int ord_len, i, r, max_pos;
+    int term_type = Z_Term_characterString;
+    const char *flags = "void";
 
     if (grep_info_prepare (zh, 0 /* zapt */, &grep_info, '0', stream))
-       return 0;
+    {
+       rset_null_parms parms;
+       
+       parms.rset_term = rset_term_create (term, strlen(term),
+                                           flags, term_type);
+       parms.rset_term->nn = 0;
+       return rset_create (rset_kind_null, &parms);
+    }
 
     if (ord < 0)
-        return 0;
+    {
+       rset_null_parms parms;
+       
+       parms.rset_term = rset_term_create (term, strlen(term),
+                                           flags, term_type);
+       parms.rset_term->nn = 0;
+       return rset_create (rset_kind_null, &parms);
+    }
     if (prefix_len)
         term_dict[prefix_len++] = '|';
     else
@@ -2149,7 +2182,7 @@ static RSET xpath_trunc(ZebraHandle zh, NMEM stream,
              grep_info.isam_p_indx);
     rset = rset_trunc (zh, grep_info.isam_p_buf,
                        grep_info.isam_p_indx, term, strlen(term),
-                       "void", 1, Z_Term_characterString);
+                       flags, 1, term_type);
     grep_info_delete (&grep_info);
     return rset;
 }
@@ -2208,28 +2241,6 @@ static RSET rpn_search_xpath (ZebraHandle zh,
             zh->errString = basenames[base_no];
             return rset;
         }
-        if (level > 0 && xpath[level-1].part[0] == '@')
-        {
-            rset_between_parms parms;
-            RSET rset_start_attr, rset_end_attr;
-            --level;
-            rset_start_attr = xpath_trunc(zh, stream, 
-                                          '0', xpath[level].part+1,
-                                          3, curAttributeSet);
-
-            rset_end_attr = xpath_trunc(zh, stream, 
-                                        '0', xpath[level].part+1,
-                                        4, curAttributeSet);
-
-            parms.key_size = sizeof(struct it_key);
-            parms.cmp = key_compare_it;
-            parms.rset_l = rset_start_attr;
-            parms.rset_m = rset;
-            parms.rset_r = rset_end_attr;
-            parms.rset_attr = 0;
-            parms.printer = key_print_it;
-            rset = rset_create (rset_kind_between, &parms);
-        }
         while (--level >= 0)
         {
             char xpath_rev[128];
@@ -2250,6 +2261,13 @@ static RSET rpn_search_xpath (ZebraHandle zh,
                             memcpy (xpath_rev + len, "[^/]*", 5);
                             len += 5;
                         }
+                        else if (*cp == ' ')
+                        {
+
+                            xpath_rev[len++] = 1;
+                            xpath_rev[len++] = ' ';
+                        }
+
                         else
                             xpath_rev[len++] = *cp;
                     xpath_rev[len++] = '/';
@@ -2292,7 +2310,7 @@ static RSET rpn_search_xpath (ZebraHandle zh,
             
                 rset_end_tag = xpath_trunc(zh, stream,
                                        '0', xpath_rev, 2, curAttributeSet);
-            
+
                 parms.key_size = sizeof(struct it_key);
                 parms.cmp = key_compare_it;
                 parms.rset_l = rset_start_tag;