+/* r_reread:
+ read from file to window if file is assocated with set -
+ indicated by fname
+ */
+static void r_reread(RSFD rfd)
+{
+ struct rfd_private *mrfd = (struct rfd_private*) rfd->priv;
+ struct rset_private *info = (struct rset_private *)rfd->rset->priv;
+
+ if (info->fname)
+ {
+ size_t count;
+ int r;
+
+ info->pos_border = mrfd->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)
+ {
+ yaz_log(YLOG_FATAL|YLOG_ERRNO, "rstemp: lseek (2) %s fd=%d", info->fname, info->fd);
+ exit(1);
+ }
+ if ((r = read(info->fd, info->buf_mem, count)) < (int) count)
+ {
+ if (r == -1)
+ yaz_log(YLOG_FATAL|YLOG_ERRNO, "rstemp: read %s", info->fname);
+ else
+ yaz_log(YLOG_FATAL, "read of %ld but got %ld",
+ (long) count, (long) r);
+ exit(1);
+ }
+ }
+ }
+ else
+ info->pos_border = info->pos_end;
+}
+
+static int r_read(RSFD rfd, void *buf, TERMID *term)
+{
+ struct rfd_private *mrfd = (struct rfd_private*) rfd->priv;
+ struct rset_private *info = (struct rset_private *)rfd->rset->priv;
+
+ size_t nc = mrfd->pos_cur + rfd->rset->keycontrol->key_size;
+
+ if (mrfd->pos_cur < info->pos_buf || nc > info->pos_border)
+ {
+ if (nc > info->pos_end)
+ return 0;
+ r_flush(rfd, 0);
+ info->pos_buf = mrfd->pos_cur;
+ r_reread(rfd);
+ }
+ memcpy(buf, info->buf_mem + (mrfd->pos_cur - info->pos_buf),
+ rfd->rset->keycontrol->key_size);
+ if (term)
+ *term = rfd->rset->term;
+ /* FIXME - should we store and return terms ?? */
+ mrfd->pos_cur = nc;
+ mrfd->cur++;
+ return 1;
+}
+
+static int r_write(RSFD rfd, const void *buf)
+{
+ struct rfd_private *mrfd = (struct rfd_private*) rfd->priv;
+ struct rset_private *info = (struct rset_private *)rfd->rset->priv;
+
+ size_t nc = mrfd->pos_cur + rfd->rset->keycontrol->key_size;
+
+ if (nc > info->pos_buf + info->buf_size)
+ {
+ r_flush(rfd, 1);
+ info->pos_buf = mrfd->pos_cur;
+ if (info->pos_buf < info->pos_end)
+ r_reread(rfd);
+ }
+ info->dirty = 1;
+ memcpy(info->buf_mem + (mrfd->pos_cur - info->pos_buf), buf,
+ rfd->rset->keycontrol->key_size);
+ mrfd->pos_cur = nc;
+ if (nc > info->pos_end)
+ info->pos_border = info->pos_end = nc;
+ info->hits++;
+ return 1;
+}
+
+static void r_pos(RSFD rfd, double *current, double *total)
+{
+ struct rfd_private *mrfd = (struct rfd_private*) rfd->priv;
+ struct rset_private *info = (struct rset_private *)rfd->rset->priv;
+
+ *current = (double) mrfd->cur;
+ *total = (double) info->hits;
+}
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */