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[pf3gnuchains/gcc-fork.git] / libgfortran / intrinsics / stat.c

diff --git a/libgfortran/intrinsics/stat.c b/libgfortran/intrinsics/stat.c
index 1d21529..11d59a8 100644 (file)
--- a/libgfortran/intrinsics/stat.c
+++ b/libgfortran/intrinsics/stat.c
@@ -1,5 +1,5 @@
 /* Implementation of the STAT and FSTAT intrinsics.
-   Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
    Contributed by Steven G. Kargl <kargls@comcast.net>.
 
 This file is part of the GNU Fortran 95 runtime library (libgfortran).
@@ -25,15 +25,13 @@ 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.  */
+write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.  */
 
-#include "config.h"
 #include "libgfortran.h"
 
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
+#include <string.h>
+#include <errno.h>
 
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
@@ -43,13 +41,8 @@ Boston, MA 02111-1307, USA.  */
 #include <stdlib.h>
 #endif
 
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
 
-#include <errno.h>
-
-#include "../io/io.h"
+#ifdef HAVE_STAT
 
 /* SUBROUTINE STAT(FILE, SARRAY, STATUS)
    CHARACTER(len=*), INTENT(IN) :: FILE
@@ -61,13 +54,13 @@ Boston, MA 02111-1307, USA.  */
    CHARACTER(len=*), INTENT(IN) :: FILE
    INTEGER, INTENT(OUT), :: SARRAY(13)  */
 
-extern void stat_i4_sub (char *, gfc_array_i4 *, GFC_INTEGER_4 *,
-                        gfc_charlen_type);
-iexport_proto(stat_i4_sub);
+/*extern void stat_i4_sub_0 (char *, gfc_array_i4 *, GFC_INTEGER_4 *,
+                          gfc_charlen_type, int);
+internal_proto(stat_i4_sub_0);*/
 
-void
-stat_i4_sub (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
-            gfc_charlen_type name_len)
+static void
+stat_i4_sub_0 (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
+              gfc_charlen_type name_len, int is_lstat __attribute__ ((unused)))
 {
   int val;
   char *str;
@@ -81,9 +74,6 @@ stat_i4_sub (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
   if (sarray->dim[0].ubound + 1 - sarray->dim[0].lbound < 13)
     runtime_error ("Array size of SARRAY is too small.");
 
-  if (sarray->dim[0].stride == 0)
-    sarray->dim[0].stride = 1;
-
   /* Trim trailing spaces from name.  */
   while (name_len > 0 && name[name_len - 1] == ' ')
     name_len--;
@@ -93,7 +83,13 @@ stat_i4_sub (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
   memcpy (str, name, name_len);
   str[name_len] = '\0';
 
-  val = stat(str, &sb);
+  /* On platforms that don't provide lstat(), we use stat() instead.  */
+#ifdef HAVE_LSTAT
+  if (is_lstat)
+    val = lstat(str, &sb);
+  else
+#endif
+    val = stat(str, &sb);
 
   if (val == 0)
     {
@@ -152,16 +148,39 @@ stat_i4_sub (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
   if (status != NULL)
     *status = (val == 0) ? 0 : errno;
 }
+
+
+extern void stat_i4_sub (char *, gfc_array_i4 *, GFC_INTEGER_4 *,
+                        gfc_charlen_type);
+iexport_proto(stat_i4_sub);
+
+void
+stat_i4_sub (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
+            gfc_charlen_type name_len)
+{
+  stat_i4_sub_0 (name, sarray, status, name_len, 0);
+}
 iexport(stat_i4_sub);
 
-extern void stat_i8_sub (char *, gfc_array_i8 *, GFC_INTEGER_8 *,
+
+extern void lstat_i4_sub (char *, gfc_array_i4 *, GFC_INTEGER_4 *,
                         gfc_charlen_type);
-iexport_proto(stat_i8_sub);
+iexport_proto(lstat_i4_sub);
 
 void
-stat_i8_sub (char *name, gfc_array_i8 *sarray, GFC_INTEGER_8 *status,
+lstat_i4_sub (char *name, gfc_array_i4 *sarray, GFC_INTEGER_4 *status,
             gfc_charlen_type name_len)
 {
+  stat_i4_sub_0 (name, sarray, status, name_len, 1);
+}
+iexport(lstat_i4_sub);
+
+
+
+static void
+stat_i8_sub_0 (char *name, gfc_array_i8 *sarray, GFC_INTEGER_8 *status,
+              gfc_charlen_type name_len, int is_lstat __attribute__ ((unused)))
+{
   int val;
   char *str;
   struct stat sb;
@@ -174,9 +193,6 @@ stat_i8_sub (char *name, gfc_array_i8 *sarray, GFC_INTEGER_8 *status,
   if (sarray->dim[0].ubound + 1 - sarray->dim[0].lbound < 13)
     runtime_error ("Array size of SARRAY is too small.");
 
-  if (sarray->dim[0].stride == 0)
-    sarray->dim[0].stride = 1;
-
   /* Trim trailing spaces from name.  */
   while (name_len > 0 && name[name_len - 1] == ' ')
     name_len--;
@@ -186,7 +202,13 @@ stat_i8_sub (char *name, gfc_array_i8 *sarray, GFC_INTEGER_8 *status,
   memcpy (str, name, name_len);
   str[name_len] = '\0';
 
-  val = stat(str, &sb);
+  /* On platforms that don't provide lstat(), we use stat() instead.  */
+#ifdef HAVE_LSTAT
+  if (is_lstat)
+    val = lstat(str, &sb);
+  else
+#endif
+    val = stat(str, &sb);
 
   if (val == 0)
     {
@@ -245,8 +267,36 @@ stat_i8_sub (char *name, gfc_array_i8 *sarray, GFC_INTEGER_8 *status,
   if (status != NULL)
     *status = (val == 0) ? 0 : errno;
 }
+
+
+extern void stat_i8_sub (char *, gfc_array_i8 *, GFC_INTEGER_8 *,
+                        gfc_charlen_type);
+iexport_proto(stat_i8_sub);
+
+void
+stat_i8_sub (char *name, gfc_array_i8 *sarray, GFC_INTEGER_8 *status,
+            gfc_charlen_type name_len)
+{
+  stat_i8_sub_0 (name, sarray, status, name_len, 0);
+}
+
 iexport(stat_i8_sub);
 
+
+extern void lstat_i8_sub (char *, gfc_array_i8 *, GFC_INTEGER_8 *,
+                        gfc_charlen_type);
+iexport_proto(lstat_i8_sub);
+
+void
+lstat_i8_sub (char *name, gfc_array_i8 *sarray, GFC_INTEGER_8 *status,
+            gfc_charlen_type name_len)
+{
+  stat_i8_sub_0 (name, sarray, status, name_len, 1);
+}
+
+iexport(lstat_i8_sub);
+
+
 extern GFC_INTEGER_4 stat_i4 (char *, gfc_array_i4 *, gfc_charlen_type);
 export_proto(stat_i4);
 
@@ -270,6 +320,43 @@ stat_i8 (char *name, gfc_array_i8 *sarray, gfc_charlen_type name_len)
 }
 
 
+/* SUBROUTINE LSTAT(FILE, SARRAY, STATUS)
+   CHARACTER(len=*), INTENT(IN) :: FILE
+   INTEGER, INTENT(OUT), :: SARRAY(13)
+   INTEGER, INTENT(OUT), OPTIONAL :: STATUS
+
+   FUNCTION LSTAT(FILE, SARRAY)
+   INTEGER LSTAT
+   CHARACTER(len=*), INTENT(IN) :: FILE
+   INTEGER, INTENT(OUT), :: SARRAY(13)  */
+
+extern GFC_INTEGER_4 lstat_i4 (char *, gfc_array_i4 *, gfc_charlen_type);
+export_proto(lstat_i4);
+
+GFC_INTEGER_4
+lstat_i4 (char *name, gfc_array_i4 *sarray, gfc_charlen_type name_len)
+{
+  GFC_INTEGER_4 val;
+  lstat_i4_sub (name, sarray, &val, name_len);
+  return val;
+}
+
+extern GFC_INTEGER_8 lstat_i8 (char *, gfc_array_i8 *, gfc_charlen_type);
+export_proto(lstat_i8);
+
+GFC_INTEGER_8
+lstat_i8 (char *name, gfc_array_i8 *sarray, gfc_charlen_type name_len)
+{
+  GFC_INTEGER_8 val;
+  lstat_i8_sub (name, sarray, &val, name_len);
+  return val;
+}
+
+#endif
+
+
+#ifdef HAVE_FSTAT
+
 /* SUBROUTINE FSTAT(UNIT, SARRAY, STATUS)
    INTEGER, INTENT(IN) :: UNIT
    INTEGER, INTENT(OUT) :: SARRAY(13)
@@ -297,9 +384,6 @@ fstat_i4_sub (GFC_INTEGER_4 *unit, gfc_array_i4 *sarray, GFC_INTEGER_4 *status)
   if (sarray->dim[0].ubound + 1 - sarray->dim[0].lbound < 13)
     runtime_error ("Array size of SARRAY is too small.");
 
-  if (sarray->dim[0].stride == 0)
-    sarray->dim[0].stride = 1;
-
   /* Convert Fortran unit number to C file descriptor.  */
   val = unit_to_fd (*unit);
   if (val >= 0)
@@ -381,9 +465,6 @@ fstat_i8_sub (GFC_INTEGER_8 *unit, gfc_array_i8 *sarray, GFC_INTEGER_8 *status)
   if (sarray->dim[0].ubound + 1 - sarray->dim[0].lbound < 13)
     runtime_error ("Array size of SARRAY is too small.");
 
-  if (sarray->dim[0].stride == 0)
-    sarray->dim[0].stride = 1;
-
   /* Convert Fortran unit number to C file descriptor.  */
   val = unit_to_fd ((int) *unit);
   if (val >= 0)
@@ -469,3 +550,5 @@ fstat_i8 (GFC_INTEGER_8 *unit, gfc_array_i8 *sarray)
   fstat_i8_sub (unit, sarray, &val);
   return val;
 }
+
+#endif