Major restructuring in rsets.

[idzebra-moved-to-github.git] / rset / rsisamc.c

diff --git a/rset/rsisamc.c b/rset/rsisamc.c
index 316d1b9..126066e 100644 (file)
--- a/rset/rsisamc.c
+++ b/rset/rsisamc.c
@@ -1,4 +1,4 @@
-/* $Id: rsisamc.c,v 1.21 2004-08-24 14:25:16 heikki Exp $
+/* $Id: rsisamc.c,v 1.23 2004-08-31 10:43:39 heikki Exp $
    Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
    Index Data Aps
 
@@ -35,16 +35,17 @@ static void r_delete (RSET ct);
 static void r_rewind (RSFD rfd);
 static int r_read (RSFD rfd, void *buf);
 static int r_write (RSFD rfd, const void *buf);
+static void r_pos (RSFD rfd, double *current, double *total);
 
 static const struct rset_control control = 
 {
     "isamc",
+    r_delete,
     r_open,
     r_close,
-    r_delete,
     r_rewind,
     rset_default_forward,
-    rset_default_pos,
+    r_pos,
     r_read,
     r_write,
 };
@@ -64,6 +65,7 @@ struct rset_isamc_info {
     int key_size;
     int (*cmp)(const void *p1, const void *p2);
     struct rset_pp_info *ispt_list;
+    struct rset_pp_info *free_list;
 };
 
 RSET rsisamc_create( NMEM nmem, int key_size, 
@@ -76,6 +78,7 @@ RSET rsisamc_create( NMEM nmem, int key_size,
     info->key_size = key_size;
     info->cmp = cmp;
     info->ispt_list = NULL;
+    info->free_list = NULL;
     info->is=is;
     info->pos=pos;
     rnew->priv=info;
@@ -90,58 +93,36 @@ static void r_delete (RSET ct)
     assert (info->ispt_list == NULL);
 }
 
-/*
-static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
-{
-    rset_isamc_parms *pt = (rset_isamc_parms *) parms;
-    struct rset_isamc_info *info;
-
-    info = (struct rset_isamc_info *) xmalloc (sizeof(*info));
-    info->is = pt->is;
-    info->pos = pt->pos;
-    info->key_size = pt->key_size;
-    info->cmp = pt->cmp;
-    info->ispt_list = NULL;
-    return info;
-}
-*/
 
 RSFD r_open (RSET ct, int flag)
 {
     struct rset_isamc_info *info = (struct rset_isamc_info *) ct->priv;
+    RSFD rfd;
     struct rset_pp_info *ptinfo;
 
     logf (LOG_DEBUG, "risamc_open");
     if (flag & RSETF_WRITE)
     {
-       logf (LOG_FATAL, "ISAMC set type is read-only");
-       return NULL;
+        logf (LOG_FATAL, "ISAMC set type is read-only");
+        return NULL;
+    }
+    rfd = rfd_create_base(ct);
+    if (rfd->priv)
+        ptinfo=(struct rset_pp_info *)rfd->priv;
+    else {
+        ptinfo = (struct rset_pp_info *) nmem_malloc (ct->nmem,sizeof(*ptinfo));
+        rfd->priv=ptinfo;
+        ptinfo->buf = nmem_malloc (ct->nmem,info->key_size);
     }
-    ptinfo = (struct rset_pp_info *) xmalloc (sizeof(*ptinfo));
-    ptinfo->next = info->ispt_list;
-    info->ispt_list = ptinfo;
-    ptinfo->pt = isc_pp_open (info->is, info->pos);
-    ptinfo->info = info;
-    ptinfo->buf = xmalloc (info->key_size);
-    return ptinfo;
+    return rfd;
 }
 
 static void r_close (RSFD rfd)
 {
-    struct rset_isamc_info *info = ((struct rset_pp_info*) rfd)->info;
-    struct rset_pp_info **ptinfop;
-
-    for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
-        if (*ptinfop == rfd)
-        {
-            xfree ((*ptinfop)->buf);
-            isc_pp_close ((*ptinfop)->pt);
-            *ptinfop = (*ptinfop)->next;
-            xfree (rfd);
-            return;
-        }
-    logf (LOG_FATAL, "r_close but no rfd match!");
-    assert (0);
+    struct rset_pp_info *p=(struct rset_pp_info *)(rfd->priv);
+
+    isc_pp_close (p->pt);
+    rfd_delete_base(rfd);
 }
 
 
@@ -153,9 +134,9 @@ static void r_rewind (RSFD rfd)
 
 static int r_read (RSFD rfd, void *buf)
 {
-    struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
+    struct rset_pp_info *p=(struct rset_pp_info *)(rfd->priv);
     int r;
-    r = isc_pp_read(pinfo->pt, buf);
+    r = isc_pp_read(p->pt, buf);
     return r;
 }
 
@@ -164,3 +145,9 @@ static int r_write (RSFD rfd, const void *buf)
     logf (LOG_FATAL, "ISAMC set type is read-only");
     return -1;
 }
+
+static void r_pos (RSFD rfd, double *current, double *total)
+{
+    *current=-1;  /* sorry, not implemented yet */
+    *total=-1;
+}