X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=dict%2Fscan.c;h=ce56e64e9c8775be51ec1ec326c03672e51b7171;hb=5e9aca2e8f33fe023b6b9da6df55642f96efcb50;hp=5eaa72705f55cc01942d15df9ea8ba50e415bb78;hpb=3c5f6226f97612c0d6ac40591f600587c5ffa858;p=idzebra-moved-to-github.git

diff --git a/dict/scan.c b/dict/scan.c
index 5eaa727..ce56e64 100644
--- a/dict/scan.c
+++ b/dict/scan.c
@@ -1,50 +1,26 @@
-/*
- * Copyright (C) 1994-1999, Index Data
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: scan.c,v $
- * Revision 1.12  1999-02-02 14:50:28  adam
- * Updated WIN32 code specific sections. Changed header.
- *
- * Revision 1.11  1998/06/22 11:34:45  adam
- * Changed scan callback function so it doesn't stop further scanning.
- *
- * Revision 1.10  1998/03/06 16:58:04  adam
- * Fixed bug which related to scanning of large indexes.
- *
- * Revision 1.9  1997/10/27 14:33:04  adam
- * Moved towards generic character mapping depending on "structure"
- * field in abstract syntax file. Fixed a few memory leaks. Fixed
- * bug with negative integers when doing searches with relational
- * operators.
- *
- * Revision 1.8  1996/02/02 13:43:52  adam
- * The public functions simply use char instead of Dict_char to represent
- * search strings. Dict_char is used internally only.
- *
- * Revision 1.7  1995/12/11  09:04:50  adam
- * Bug fix: the lookup/scan/lookgrep didn't handle empty dictionary.
- *
- * Revision 1.6  1995/11/20  11:58:04  adam
- * Support for YAZ in standard located directories, such as /usr/local/..
- *
- * Revision 1.5  1995/10/09  16:18:32  adam
- * Function dict_lookup_grep got extra client data parameter.
- *
- * Revision 1.4  1995/10/06  13:52:00  adam
- * Bug fixes. Handler may abort further scanning.
- *
- * Revision 1.3  1995/10/06  11:06:07  adam
- * Bug fixes.
- *
- * Revision 1.2  1995/10/06  10:43:16  adam
- * Minor changes.
- *
- * Revision 1.1  1995/10/06  09:04:18  adam
- * First version of scan.
- *
- */
+/* $Id: scan.c,v 1.15 2002-08-02 19:26:55 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 <stdlib.h>
 #include <string.h>
 #include <stdio.h>
@@ -64,11 +40,16 @@ int dict_scan_trav (Dict dict, Dict_ptr ptr, int pos, Dict_char *str,
 
     dict_bf_readp (dict->dbf, ptr, &p);
     hi = DICT_nodir(p)-1;
-    if (start == 0 && dir == -1)
-        lo = hi;
-    else
+    if (start != -1)
         lo = start;
-    indxp = (short*) ((char*) p+DICT_pagesize(dict)-sizeof(short)); 
+    else
+    {
+        if (dir == -1)
+            lo = hi;
+        else
+            lo = 0;
+    }
+    indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short)); 
 
     while (lo <= hi && lo >= 0 && *count > 0)
     {
@@ -111,10 +92,10 @@ int dict_scan_trav (Dict dict, Dict_ptr ptr, int pos, Dict_char *str,
             }
             if (*count > 0 && subptr)
             {
-	        dict_scan_trav (dict, subptr, pos+1, str, 0, count, 
+	        dict_scan_trav (dict, subptr, pos+1, str, -1, count, 
                                 client, userfunc, dir);
                 dict_bf_readp (dict->dbf, ptr, &p);
-                indxp = (short*) ((char*) p+DICT_pagesize(dict)-sizeof(short)); 
+                indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short)); 
 	    }
         }
         lo += dir;
@@ -136,7 +117,7 @@ int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str,
         return 0;
     mid = lo = 0;
     hi = DICT_nodir(p)-1;
-    indxp = (short*) ((char*) p+DICT_pagesize(dict)-sizeof(short));    
+    indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short));
     while (lo <= hi)
     {
         mid = (lo+hi)/2;
@@ -189,7 +170,7 @@ int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str,
                         }
                     }
                     if (*after && subptr)
-		        if (dict_scan_trav (dict, subptr, pos+1, str, 0, 
+		        if (dict_scan_trav (dict, subptr, pos+1, str, -1, 
                                             after, client, userfunc, 1))
                             return 1;
                 }
@@ -213,7 +194,7 @@ int dict_scan_r (Dict dict, Dict_ptr ptr, int pos, Dict_char *str,
         if (dict_scan_trav (dict, ptr, pos, str, cmp ? mid : mid+1, after,
                             client, userfunc, 1))
             return 1;
-    if (*before && mid > 1)
+    if (*before && mid > 0)
         if (dict_scan_trav (dict, ptr, pos, str, mid-1, before, 
                             client, userfunc, -1))
             return 1;
@@ -231,9 +212,8 @@ int dict_scan (Dict dict, char *str, int *before, int *after, void *client,
 	logf (LOG_DEBUG, " %3d  %c", str[i],
 	      (str[i] > ' ' && str[i] < 127) ? str[i] : '?');
     }
-    if (dict->head.last <= 1)
+    if (!dict->head.root)
         return 0;
-    return dict_scan_r (dict, 1, 0, (Dict_char *) str, before, after, client,
-                        f);
+    return dict_scan_r (dict, dict->head.root, 0, (Dict_char *) str,
+			before, after, client, f);
 }
-