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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116172 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 11 insertions, 1 deletions

diff --git a/libgfortran/io/open.c b/libgfortran/io/open.c
index 3515bef75ce..b3360792a22 100644
--- a/libgfortran/io/open.c
+++ b/libgfortran/io/open.c
@@ -40,6 +40,7 @@ static const st_option access_opt[] = {
   {"sequential", ACCESS_SEQUENTIAL},
   {"direct", ACCESS_DIRECT},
   {"append", ACCESS_APPEND},
+  {"stream", ACCESS_STREAM},
   {NULL, 0}
 };
 
@@ -214,7 +215,9 @@ edit_modes (st_parameter_open *opp, gfc_unit * u, unit_flags * flags)
       if (sseek (u->s, file_length (u->s)) == FAILURE)
 	goto seek_error;
 
-      u->current_record = 0;
+      if (flags->access != ACCESS_STREAM)
+	u->current_record = 0;
+
       u->endfile = AT_ENDFILE;	/* We are at the end.  */
       break;
 
@@ -432,6 +435,13 @@ new_unit (st_parameter_open *opp, gfc_unit *u, unit_flags * flags)
 
   if (flags->access == ACCESS_DIRECT)
     u->maxrec = max_offset / u->recl;
+  
+  if (flags->access == ACCESS_STREAM)
+    {
+      u->maxrec = max_offset;
+      u->recl = 1;
+      u->last_record = 1;
+    }
 
   memmove (u->file, opp->file, opp->file_len);
   u->file_len = opp->file_len;