re PR fortran/25828 ([f2003] ACCESS='STREAM' io support)

2006-08-15  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/25828
	* libgfortran.h: Rename GFC_LARGE_IO_INT to GFC_IO_INT.
	* io/file_pos.c (st_backspace): Ignore if access=STREAM.
	(st_rewind): Handle case of access=STREAM.
	* io/open.c (access_opt): Add STREAM_ACCESS.
	(edit_modes): Set current_record to zero only if not STREAM.
	(new_unit): Initialize maxrec, recl, and last_record for STREAM.
	* io/read.c (read_x): Advance file position for STREAM.
	* io/io.h (enum unit_access): Align IOPARM flags with frontend.
	Add ACCESS_STREAM. Add prototype for is_stream_io () function.
	Use GFC_IO_INT.
	* io/inquire.c (inquire_via_unit): Add text for access = "STREAM".
	* io/unit.c (is_stream_io): New function to return true if access =
	STREAM.
	* io/transfer.c (file_mode): Add modes for unformatted stream and
	formatted stream. (current_mode): Return appropriate file mode based
	on access flags.
	(read_block): Handle formatted stream reads.
	(read_block_direct): Handle unformatted stream reads.
	(write_block): Handle formatted stream writes.
	(write_buf): Handle unformatted stream writes.
	(unformatted_read): Fix up, use temporary for size.
	(pre_position): Position file for STREAM access.
	(data_transfer_init): Initialize for stream access, skip irrelevent
	error checks.
	(next_record_r),(next_record_w), and (next_record): Do nothing for
	stream I/O.
	(finalize_transfer): Flush when all done if stream I/O.

From-SVN: r116172

1 files changed, 13 insertions, 9 deletions

diff --git a/libgfortran/io/read.c b/libgfortran/io/read.c
index 9db5d58..db9ff99 100644
--- a/libgfortran/io/read.c
+++ b/libgfortran/io/read.c
@@ -841,13 +841,17 @@ read_f (st_parameter_dt *dtp, const fnode *f, char *dest, int length)
 void
 read_x (st_parameter_dt *dtp, int n)
 {
-  if ((dtp->u.p.current_unit->flags.pad == PAD_NO || is_internal_unit (dtp))
-      && dtp->u.p.current_unit->bytes_left < n)
-    n = dtp->u.p.current_unit->bytes_left;
-
-  dtp->u.p.sf_read_comma = 0;
-  if (n > 0)
-    read_sf (dtp, &n, 1);
-  dtp->u.p.sf_read_comma = 1;
-
+  if (!is_stream_io (dtp))
+    {
+      if ((dtp->u.p.current_unit->flags.pad == PAD_NO || is_internal_unit (dtp))
+	  && dtp->u.p.current_unit->bytes_left < n)
+	n = dtp->u.p.current_unit->bytes_left;
+
+      dtp->u.p.sf_read_comma = 0;
+      if (n > 0)
+	read_sf (dtp, &n, 1);
+      dtp->u.p.sf_read_comma = 1;
+    }
+  else
+    dtp->rec += (GFC_IO_INT) n;
 }