+static void r_close (RSFD rfd)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info;
+
+ r_flush (rfd, 0);
+ if (info->fname && info->fd != -1)
+ {
+ close (info->fd);
+ info->fd = -1;
+ }
+}
+
+static void r_delete (RSET ct)
+{
+ struct rset_temp_info *info = ct->buf;
+
+ if (info->fname)
+ unlink (info->fname);
+ free (info->buf_mem);
+ logf (LOG_DEBUG, "r_delete: set size %ld", (long) info->pos_end);
+ if (info->fname)
+ {
+ logf (LOG_DEBUG, "r_delete: unlink %s", info->fname);
+ unlink (info->fname);
+ free (info->fname);
+ }
+ free (info);
+}
+
+/* r_reread:
+ read from file to window if file is assocated with set -
+ indicated by fname
+ */
+static void r_reread (RSFD rfd)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info;
+
+ if (info->fname)
+ {
+ size_t r, count;
+
+ info->pos_border = info->pos_cur + info->buf_size;
+ if (info->pos_border > info->pos_end)
+ info->pos_border = info->pos_end;
+ count = info->pos_border - info->pos_buf;
+ if (count > 0)
+ {
+ if (lseek (info->fd, info->pos_buf, SEEK_SET) == -1)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "lseek %s", info->fname);
+ exit (1);
+ }
+ if ((r = read (info->fd, info->buf_mem, count)) < count)
+ {
+ if (r == -1)
+ logf (LOG_FATAL|LOG_ERRNO, "read %s", info->fname);
+ else
+ logf (LOG_FATAL, "read of %ld but got %ld",
+ (long) count, (long) r);
+ exit (1);
+ }
+ }
+ }
+ else
+ info->pos_border = info->pos_end;
+}
+
+static void r_rewind (RSFD rfd)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info;
+
+ r_flush (rfd, 0);
+ info->pos_cur = 0;
+ info->pos_buf = 0;
+ r_reread (rfd);
+}
+
+static int r_count (RSET ct)
+{
+ struct rset_temp_info *info = ct->buf;
+
+ return info->pos_end / info->key_size;
+}
+
+static int r_read (RSFD rfd, void *buf)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info;
+
+ size_t nc = info->pos_cur + info->key_size;
+
+ if (nc > info->pos_border)
+ {
+ if (nc > info->pos_end)
+ return 0;
+ r_flush (rfd, 0);
+ info->pos_buf = info->pos_cur;
+ r_reread (rfd);
+ }
+ memcpy (buf, info->buf_mem + (info->pos_cur - info->pos_buf),
+ info->key_size);
+ info->pos_cur = nc;
+ return 1;
+}
+
+static int r_write (RSFD rfd, const void *buf)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info;
+
+ size_t nc = info->pos_cur + info->key_size;
+
+ if (nc > info->pos_buf + info->buf_size)
+ {
+ r_flush (rfd, 1);
+ info->pos_buf = info->pos_cur;
+ if (info->pos_buf < info->pos_end)
+ r_reread (rfd);
+ }
+ info->dirty = 1;
+ memcpy (info->buf_mem + (info->pos_cur - info->pos_buf), buf,
+ info->key_size);
+ info->pos_cur = nc;
+ if (nc > info->pos_end)
+ info->pos_border = info->pos_end = nc;
+ return 1;
+}
+
+static int r_score (RSFD rfd, int *score)
+{
+ *score = -1;
+ return -1;
+}