Windows NT port.

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

diff --git a/index/zsets.c b/index/zsets.c
index 2963e4f..b43ea18 100644 (file)
--- a/index/zsets.c
+++ b/index/zsets.c
@@ -1,10 +1,46 @@
 /*
- * Copyright (C) 1995, Index Data I/S 
+ * Copyright (C) 1994-1995, Index Data I/S 
  * All rights reserved.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: zsets.c,v $
- * Revision 1.2  1995-09-06 10:33:04  adam
+ * Revision 1.12  1997-09-25 14:57:36  adam
+ * Windows NT port.
+ *
+ * Revision 1.11  1996/12/23 15:30:46  adam
+ * Work on truncation.
+ * Bug fix: result sets weren't deleted after server shut down.
+ *
+ * Revision 1.10  1995/10/30 15:08:08  adam
+ * Bug fixes.
+ *
+ * Revision 1.9  1995/10/17  18:02:14  adam
+ * New feature: databases. Implemented as prefix to words in dictionary.
+ *
+ * Revision 1.8  1995/10/10  13:59:25  adam
+ * Function rset_open changed its wflag parameter to general flags.
+ *
+ * Revision 1.7  1995/10/06  14:38:01  adam
+ * New result set method: r_score.
+ * Local no (sysno) and score is transferred to retrieveCtrl.
+ *
+ * Revision 1.6  1995/09/28  09:19:49  adam
+ * xfree/xmalloc used everywhere.
+ * Extract/retrieve method seems to work for text records.
+ *
+ * Revision 1.5  1995/09/27  16:17:32  adam
+ * More work on retrieve.
+ *
+ * Revision 1.4  1995/09/07  13:58:36  adam
+ * New parameter: result-set file descriptor (RSFD) to support multiple
+ * positions within the same result-set.
+ * Boolean operators: and, or, not implemented.
+ * Result-set references.
+ *
+ * Revision 1.3  1995/09/06  16:11:19  adam
+ * Option: only one word key per file.
+ *
+ * Revision 1.2  1995/09/06  10:33:04  adam
  * More work on present. Some log messages removed.
  *
  * Revision 1.1  1995/09/05  15:28:40  adam
@@ -13,7 +49,11 @@
  */
 #include <stdio.h>
 #include <assert.h>
+#ifdef WINDOWS
+#include <io.h>
+#else
 #include <unistd.h>
+#endif
 
 #include "zserver.h"
 #include <rstemp.h>
@@ -50,16 +90,31 @@ ZServerSet *resultSetGet (ZServerInfo *zi, const char *name)
     return NULL;
 }
 
-ZServerRecord *resultSetRecordGet (ZServerInfo *zi, const char *name, 
-                                   int num, int *positions)
+void resultSetDestroy (ZServerInfo *zi)
+{
+    ZServerSet *s, *s1;
+
+    for (s = zi->sets; s; s = s1)
+    {
+        s1 = s->next;
+        rset_delete (s->rset);
+        xfree (s->name);
+        xfree (s);
+    }
+    zi->sets = NULL;
+}
+
+ZServerSetSysno *resultSetSysnoGet (ZServerInfo *zi, const char *name, 
+                                    int num, int *positions)
 {
     ZServerSet *sset;
-    ZServerRecord *sr;
+    ZServerSetSysno *sr;
     RSET rset;
     int num_i = 0;
     int position = 0;
     int psysno = 0;
     struct it_key key;
+    RSFD rfd;
 
     if (!(sset = resultSetGet (zi, name)))
         return NULL;
@@ -67,72 +122,33 @@ ZServerRecord *resultSetRecordGet (ZServerInfo *zi, const char *name,
         return NULL;
     logf (LOG_DEBUG, "resultSetRecordGet");
     sr = xmalloc (sizeof(*sr) * num);
-    rset_open (rset, 0);
-    while (rset_read (rset, &key))
+    rfd = rset_open (rset, RSETF_READ|RSETF_SORT_RANK);
+    while (rset_read (rset, rfd, &key))
     {
         if (key.sysno != psysno)
         {
             psysno = key.sysno;
             position++;
+            assert (num_i < num);
             if (position == positions[num_i])
             {
-                FILE *inf;
-                char fname[SYS_IDX_ENTRY_LEN];
-
-                sr[num_i].buf = NULL;
-                if (lseek (zi->sys_idx_fd, psysno * SYS_IDX_ENTRY_LEN,
-                           SEEK_SET) == -1)
-                {
-                    logf (LOG_FATAL|LOG_ERRNO, "lseek of sys_idx");
-                    exit (1);
-                }
-                if (read (zi->sys_idx_fd, fname, SYS_IDX_ENTRY_LEN) == -1)
-                {
-                    logf (LOG_FATAL|LOG_ERRNO, "read of sys_idx");
-                    exit (1);
-                }
-                if (!(inf = fopen (fname, "r")))
-                    logf (LOG_WARN, "fopen: %s", fname);
-                else
-                {
-                    long size;
-
-                    fseek (inf, 0L, SEEK_END);
-                    size = ftell (inf);
-                    fseek (inf, 0L, SEEK_SET);
-                    logf (LOG_DEBUG, "get sysno=%d, fname=%s, size=%ld",
-                          psysno, fname, (long) size);
-                    sr[num_i].buf = xmalloc (size+1);
-                    sr[num_i].size = size;
-                    sr[num_i].buf[size] = '\0';
-                    if (fread (sr[num_i].buf, size, 1, inf) != 1)
-                    {
-                        logf (LOG_FATAL|LOG_ERRNO, "fread %s", fname);
-                        exit (1);
-                    }
-                    fclose (inf);
-                }
-                num_i++;
-                if (num_i == num)
+                sr[num_i].sysno = psysno;
+                rset_score (rset, rfd, &sr[num_i].score);
+                if (++num_i == num)
                     break;
             }
         }
     }
-    rset_close (rset);
+    rset_close (rset, rfd);
     while (num_i < num)
     {
-        sr[num_i].buf = NULL;
-        sr[num_i].size = 0;
+        sr[num_i].sysno = 0;
         num_i++;
     }
     return sr;
 }
 
-void resultSetRecordDel (ZServerInfo *zi, ZServerRecord *records, int num)
+void resultSetSysnoDel (ZServerInfo *zi, ZServerSetSysno *records, int num)
 {
-    int i;
-
-    for (i = 0; i<num; i++)
-        free (records[i].buf);
-    free (records);
+    xfree (records);
 }