check.c (gfc_check_ttynam_sub, [...]): Add check functions for new intrinsics TTYNAM and ISATTY.

	* check.c (gfc_check_ttynam_sub, gfc_check_isatty): Add check
	functions for new intrinsics TTYNAM and ISATTY.
	* intrinsic.c (add_functions, add_subroutines): Add new
	intrinsics.
	* intrinsic.h: Add prototypes for new check and resolve
	functions.
	* iresolve.c (gfc_resolve_isatty, gfc_resolve_ttynam_sub): New
	resolve functions for intrinsics TTYNAM and ISATTY.
	* gfortran.h (gfc_generic_isym_id): Add symbol for ISATTY.
	* trans-intrinsic.c: Add case for GFC_ISYM_ISATTY.
	* Makefile.am: Add file intrinsics/tty.c to Makefile process.
	* Makefile.in: Regenerate.
	* io/io.h: Prototypes for new functions stream_isatty and
	stream_ttyname.
	* io/unix (stream_isatty, stream_ttyname): New functions to call
	isatty() and ttyname() on a given unit.
	* intrinsics/tty.c: New file to implement g77 intrinsics TTYNAM
	and ISATTY.

From-SVN: r102915

6 files changed, 135 insertions, 5 deletions

diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index d733fa3..f64b01d 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,9 +1,19 @@
+2005-08-09  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
+	* Makefile.am: Add file intrinsics/tty.c to Makefile process.
+	* Makefile.in: Regenerate.
+	* io/io.h: Prototypes for new functions stream_isatty and
+	stream_ttyname.
+	* io/unix (stream_isatty, stream_ttyname): New functions to call
+	isatty() and ttyname() on a given unit.
+	* intrinsics/tty.c: New file to implement g77 intrinsics TTYNAM
+	and ISATTY.
+
 2005-08-08  Jerry DeLisle  <jvdelisle@verizon.net>
 
-        PR libfortran/23154
-        * io/transfer.c (data_transfer_init): Initialize
-        current_unit->bytes_left for a read.
-        
+	PR libfortran/23154
+	* io/transfer.c (data_transfer_init): Initialize
+	current_unit->bytes_left for a read.
+
 2005-08-07  Janne Blomqvist  <jblomqvi@cc.hut.fi>
 
 	PR fortran/22390
diff --git a/libgfortran/Makefile.am b/libgfortran/Makefile.am
index 9d6af64..d5e21c6 100644
--- a/libgfortran/Makefile.am
+++ b/libgfortran/Makefile.am
@@ -85,6 +85,7 @@ intrinsics/symlnk.c \
 intrinsics/system_clock.c \
 intrinsics/time.c \
 intrinsics/transpose_generic.c \
+intrinsics/tty.c \
 intrinsics/umask.c \
 intrinsics/unlink.c \
 intrinsics/unpack_generic.c \
diff --git a/libgfortran/Makefile.in b/libgfortran/Makefile.in
index 15aa5e3..f69e3b4 100644
--- a/libgfortran/Makefile.in
+++ b/libgfortran/Makefile.in
@@ -140,7 +140,7 @@ am__objects_33 = associated.lo abort.lo args.lo bessel.lo \
 	rand.lo random.lo rename.lo reshape_generic.lo \
 	reshape_packed.lo selected_int_kind.lo selected_real_kind.lo \
 	stat.lo symlnk.lo system_clock.lo time.lo transpose_generic.lo \
-	umask.lo unlink.lo unpack_generic.lo in_pack_generic.lo \
+	tty.lo umask.lo unlink.lo unpack_generic.lo in_pack_generic.lo \
 	in_unpack_generic.lo normalize.lo
 am__objects_34 =
 am__objects_35 = _abs_c4.lo _abs_c8.lo _abs_i4.lo _abs_i8.lo \
@@ -379,6 +379,7 @@ intrinsics/symlnk.c \
 intrinsics/system_clock.c \
 intrinsics/time.c \
 intrinsics/transpose_generic.c \
+intrinsics/tty.c \
 intrinsics/umask.c \
 intrinsics/unlink.c \
 intrinsics/unpack_generic.c \
@@ -1385,6 +1386,9 @@ time.lo: intrinsics/time.c
 transpose_generic.lo: intrinsics/transpose_generic.c
 	$(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o transpose_generic.lo `test -f 'intrinsics/transpose_generic.c' || echo '$(srcdir)/'`intrinsics/transpose_generic.c
 
+tty.lo: intrinsics/tty.c
+	$(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o tty.lo `test -f 'intrinsics/tty.c' || echo '$(srcdir)/'`intrinsics/tty.c
+
 umask.lo: intrinsics/umask.c
 	$(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o umask.lo `test -f 'intrinsics/umask.c' || echo '$(srcdir)/'`intrinsics/umask.c
 
diff --git a/libgfortran/intrinsics/tty.c b/libgfortran/intrinsics/tty.c
new file mode 100644
index 0000000..c9e2c57
--- /dev/null
+++ b/libgfortran/intrinsics/tty.c
@@ -0,0 +1,97 @@
+/* Implementation of the ISATTY and TTYNAM g77 intrinsics.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file.  (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public
+License along with libgfortran; see the file COPYING.  If not,
+write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include "config.h"
+#include "libgfortran.h"
+#include "../io/io.h"
+#include <string.h>
+
+/* LOGICAL FUNCTION ISATTY(UNIT)
+   INTEGER, INTENT(IN) :: UNIT */
+
+extern GFC_LOGICAL_4 isatty_l4 (int *);
+export_proto(isatty_l4);
+
+GFC_LOGICAL_4
+isatty_l4 (int *unit)
+{
+  gfc_unit *u;
+
+  u = find_unit (*unit);
+  if (u != NULL)
+    return (GFC_LOGICAL_4) stream_isatty (u->s);
+  else
+    return 0;
+}
+
+
+extern GFC_LOGICAL_8 isatty_l8 (int *);
+export_proto(isatty_l8);
+
+GFC_LOGICAL_8
+isatty_l8 (int *unit)
+{
+  gfc_unit *u;
+
+  u = find_unit (*unit);
+  if (u != NULL)
+    return (GFC_LOGICAL_8) stream_isatty (u->s);
+  else
+    return 0;
+}
+
+
+/* SUBROUTINE TTYNAM(UNIT,NAME)
+   INTEGER,SCALAR,INTENT(IN) :: UNIT
+   CHARACTER,SCALAR,INTENT(OUT) :: NAME */
+
+extern void ttynam_sub (int *, char *, gfc_charlen_type);
+export_proto(ttynam_sub);
+
+void
+ttynam_sub (int *unit, char * name, gfc_charlen_type name_len)
+{
+  gfc_unit *u;
+  char * n;
+  int i;
+
+  memset (name, ' ', name_len);
+  u = find_unit (*unit);
+  if (u != NULL)
+    {
+      n = stream_ttyname (u->s);
+      if (n != NULL)
+	{
+	  i = 0;
+	  while (*n && i < name_len)
+	    name[i++] = *(n++);
+	}
+    }
+}
diff --git a/libgfortran/io/io.h b/libgfortran/io/io.h
index 3c932fc..a7dae18 100644
--- a/libgfortran/io/io.h
+++ b/libgfortran/io/io.h
@@ -496,6 +496,12 @@ internal_proto(empty_internal_buffer);
 extern try flush (stream *);
 internal_proto(flush);
 
+extern int stream_isatty (stream *);
+internal_proto(stream_isatty);
+
+extern char * stream_ttyname (stream *);
+internal_proto(stream_ttyname);
+
 extern int unit_to_fd (int);
 internal_proto(unit_to_fd);
 
diff --git a/libgfortran/io/unix.c b/libgfortran/io/unix.c
index e6b0478..eead2a2 100644
--- a/libgfortran/io/unix.c
+++ b/libgfortran/io/unix.c
@@ -1536,6 +1536,18 @@ flush (stream *s)
   return fd_flush( (unix_stream *) s);
 }
 
+int
+stream_isatty (stream *s)
+{
+  return isatty (((unix_stream *) s)->fd);
+}
+
+char *
+stream_ttyname (stream *s)
+{
+  return ttyname (((unix_stream *) s)->fd);
+}
+
 
 /* How files are stored:  This is an operating-system specific issue,
    and therefore belongs here.  There are three cases to consider.