mirror of git://gcc.gnu.org/git/gcc.git
417 lines
8.3 KiB
C
417 lines
8.3 KiB
C
/* Implementation of the FGET, FGETC, FPUT, FPUTC, FLUSH
|
|
FTELL, TTYNAM and ISATTY intrinsics.
|
|
Copyright (C) 2005-2014 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU Fortran 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 3 of the License, or (at your option) any later version.
|
|
|
|
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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "io.h"
|
|
#include "fbuf.h"
|
|
#include "unix.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
|
|
static const int five = 5;
|
|
static const int six = 6;
|
|
|
|
extern int PREFIX(fgetc) (const int *, char *, gfc_charlen_type);
|
|
export_proto_np(PREFIX(fgetc));
|
|
|
|
int
|
|
PREFIX(fgetc) (const int * unit, char * c, gfc_charlen_type c_len)
|
|
{
|
|
int ret;
|
|
gfc_unit * u = find_unit (*unit);
|
|
|
|
if (u == NULL)
|
|
return -1;
|
|
|
|
fbuf_reset (u);
|
|
if (u->mode == WRITING)
|
|
{
|
|
sflush (u->s);
|
|
u->mode = READING;
|
|
}
|
|
|
|
memset (c, ' ', c_len);
|
|
ret = sread (u->s, c, 1);
|
|
unlock_unit (u);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (ret != 1)
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
#define FGETC_SUB(kind) \
|
|
extern void fgetc_i ## kind ## _sub \
|
|
(const int *, char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
|
|
export_proto(fgetc_i ## kind ## _sub); \
|
|
void fgetc_i ## kind ## _sub \
|
|
(const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
|
|
{ if (st != NULL) \
|
|
*st = PREFIX(fgetc) (unit, c, c_len); \
|
|
else \
|
|
PREFIX(fgetc) (unit, c, c_len); }
|
|
|
|
FGETC_SUB(1)
|
|
FGETC_SUB(2)
|
|
FGETC_SUB(4)
|
|
FGETC_SUB(8)
|
|
|
|
|
|
extern int PREFIX(fget) (char *, gfc_charlen_type);
|
|
export_proto_np(PREFIX(fget));
|
|
|
|
int
|
|
PREFIX(fget) (char * c, gfc_charlen_type c_len)
|
|
{
|
|
return PREFIX(fgetc) (&five, c, c_len);
|
|
}
|
|
|
|
|
|
#define FGET_SUB(kind) \
|
|
extern void fget_i ## kind ## _sub \
|
|
(char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
|
|
export_proto(fget_i ## kind ## _sub); \
|
|
void fget_i ## kind ## _sub \
|
|
(char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
|
|
{ if (st != NULL) \
|
|
*st = PREFIX(fgetc) (&five, c, c_len); \
|
|
else \
|
|
PREFIX(fgetc) (&five, c, c_len); }
|
|
|
|
FGET_SUB(1)
|
|
FGET_SUB(2)
|
|
FGET_SUB(4)
|
|
FGET_SUB(8)
|
|
|
|
|
|
|
|
extern int PREFIX(fputc) (const int *, char *, gfc_charlen_type);
|
|
export_proto_np(PREFIX(fputc));
|
|
|
|
int
|
|
PREFIX(fputc) (const int * unit, char * c,
|
|
gfc_charlen_type c_len __attribute__((unused)))
|
|
{
|
|
ssize_t s;
|
|
gfc_unit * u = find_unit (*unit);
|
|
|
|
if (u == NULL)
|
|
return -1;
|
|
|
|
fbuf_reset (u);
|
|
if (u->mode == READING)
|
|
{
|
|
sflush (u->s);
|
|
u->mode = WRITING;
|
|
}
|
|
|
|
s = swrite (u->s, c, 1);
|
|
unlock_unit (u);
|
|
if (s < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
#define FPUTC_SUB(kind) \
|
|
extern void fputc_i ## kind ## _sub \
|
|
(const int *, char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
|
|
export_proto(fputc_i ## kind ## _sub); \
|
|
void fputc_i ## kind ## _sub \
|
|
(const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
|
|
{ if (st != NULL) \
|
|
*st = PREFIX(fputc) (unit, c, c_len); \
|
|
else \
|
|
PREFIX(fputc) (unit, c, c_len); }
|
|
|
|
FPUTC_SUB(1)
|
|
FPUTC_SUB(2)
|
|
FPUTC_SUB(4)
|
|
FPUTC_SUB(8)
|
|
|
|
|
|
extern int PREFIX(fput) (char *, gfc_charlen_type);
|
|
export_proto_np(PREFIX(fput));
|
|
|
|
int
|
|
PREFIX(fput) (char * c, gfc_charlen_type c_len)
|
|
{
|
|
return PREFIX(fputc) (&six, c, c_len);
|
|
}
|
|
|
|
|
|
#define FPUT_SUB(kind) \
|
|
extern void fput_i ## kind ## _sub \
|
|
(char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
|
|
export_proto(fput_i ## kind ## _sub); \
|
|
void fput_i ## kind ## _sub \
|
|
(char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
|
|
{ if (st != NULL) \
|
|
*st = PREFIX(fputc) (&six, c, c_len); \
|
|
else \
|
|
PREFIX(fputc) (&six, c, c_len); }
|
|
|
|
FPUT_SUB(1)
|
|
FPUT_SUB(2)
|
|
FPUT_SUB(4)
|
|
FPUT_SUB(8)
|
|
|
|
|
|
/* SUBROUTINE FLUSH(UNIT)
|
|
INTEGER, INTENT(IN), OPTIONAL :: UNIT */
|
|
|
|
extern void flush_i4 (GFC_INTEGER_4 *);
|
|
export_proto(flush_i4);
|
|
|
|
void
|
|
flush_i4 (GFC_INTEGER_4 *unit)
|
|
{
|
|
gfc_unit *us;
|
|
|
|
/* flush all streams */
|
|
if (unit == NULL)
|
|
flush_all_units ();
|
|
else
|
|
{
|
|
us = find_unit (*unit);
|
|
if (us != NULL)
|
|
{
|
|
sflush (us->s);
|
|
unlock_unit (us);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
extern void flush_i8 (GFC_INTEGER_8 *);
|
|
export_proto(flush_i8);
|
|
|
|
void
|
|
flush_i8 (GFC_INTEGER_8 *unit)
|
|
{
|
|
gfc_unit *us;
|
|
|
|
/* flush all streams */
|
|
if (unit == NULL)
|
|
flush_all_units ();
|
|
else
|
|
{
|
|
us = find_unit (*unit);
|
|
if (us != NULL)
|
|
{
|
|
sflush (us->s);
|
|
unlock_unit (us);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* FSEEK intrinsic */
|
|
|
|
extern void fseek_sub (int *, GFC_IO_INT *, int *, int *);
|
|
export_proto(fseek_sub);
|
|
|
|
void
|
|
fseek_sub (int * unit, GFC_IO_INT * offset, int * whence, int * status)
|
|
{
|
|
gfc_unit * u = find_unit (*unit);
|
|
ssize_t result = -1;
|
|
|
|
if (u != NULL)
|
|
{
|
|
result = sseek(u->s, *offset, *whence);
|
|
|
|
unlock_unit (u);
|
|
}
|
|
|
|
if (status)
|
|
*status = (result < 0 ? -1 : 0);
|
|
}
|
|
|
|
|
|
|
|
/* FTELL intrinsic */
|
|
|
|
static gfc_offset
|
|
gf_ftell (int unit)
|
|
{
|
|
gfc_unit * u = find_unit (unit);
|
|
if (u == NULL)
|
|
return -1;
|
|
int pos = fbuf_reset (u);
|
|
if (pos != 0)
|
|
sseek (u->s, pos, SEEK_CUR);
|
|
gfc_offset ret = stell (u->s);
|
|
unlock_unit (u);
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* Here is the ftell function with an incorrect return type; retained
|
|
due to ABI compatibility. */
|
|
|
|
extern size_t PREFIX(ftell) (int *);
|
|
export_proto_np(PREFIX(ftell));
|
|
|
|
size_t
|
|
PREFIX(ftell) (int * unit)
|
|
{
|
|
return gf_ftell (*unit);
|
|
}
|
|
|
|
|
|
/* Here is the ftell function with the correct return type, ensuring
|
|
that large files can be supported as long as the target supports
|
|
large integers; as of 4.8 the FTELL intrinsic function will call
|
|
this one instead of the old ftell above. */
|
|
|
|
extern GFC_IO_INT PREFIX(ftell2) (int *);
|
|
export_proto_np(PREFIX(ftell2));
|
|
|
|
GFC_IO_INT
|
|
PREFIX(ftell2) (int * unit)
|
|
{
|
|
return gf_ftell (*unit);
|
|
}
|
|
|
|
|
|
#define FTELL_SUB(kind) \
|
|
extern void ftell_i ## kind ## _sub (int *, GFC_INTEGER_ ## kind *); \
|
|
export_proto(ftell_i ## kind ## _sub); \
|
|
void \
|
|
ftell_i ## kind ## _sub (int * unit, GFC_INTEGER_ ## kind * offset) \
|
|
{ \
|
|
*offset = gf_ftell (*unit); \
|
|
}
|
|
|
|
FTELL_SUB(1)
|
|
FTELL_SUB(2)
|
|
FTELL_SUB(4)
|
|
FTELL_SUB(8)
|
|
|
|
|
|
|
|
/* 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;
|
|
GFC_LOGICAL_4 ret = 0;
|
|
|
|
u = find_unit (*unit);
|
|
if (u != NULL)
|
|
{
|
|
ret = (GFC_LOGICAL_4) stream_isatty (u->s);
|
|
unlock_unit (u);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
extern GFC_LOGICAL_8 isatty_l8 (int *);
|
|
export_proto(isatty_l8);
|
|
|
|
GFC_LOGICAL_8
|
|
isatty_l8 (int *unit)
|
|
{
|
|
gfc_unit *u;
|
|
GFC_LOGICAL_8 ret = 0;
|
|
|
|
u = find_unit (*unit);
|
|
if (u != NULL)
|
|
{
|
|
ret = (GFC_LOGICAL_8) stream_isatty (u->s);
|
|
unlock_unit (u);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* 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;
|
|
int nlen;
|
|
int err = 1;
|
|
|
|
u = find_unit (*unit);
|
|
if (u != NULL)
|
|
{
|
|
err = stream_ttyname (u->s, name, name_len);
|
|
if (err == 0)
|
|
{
|
|
nlen = strlen (name);
|
|
memset (&name[nlen], ' ', name_len - nlen);
|
|
}
|
|
|
|
unlock_unit (u);
|
|
}
|
|
if (err != 0)
|
|
memset (name, ' ', name_len);
|
|
}
|
|
|
|
|
|
extern void ttynam (char **, gfc_charlen_type *, int);
|
|
export_proto(ttynam);
|
|
|
|
void
|
|
ttynam (char ** name, gfc_charlen_type * name_len, int unit)
|
|
{
|
|
gfc_unit *u;
|
|
|
|
u = find_unit (unit);
|
|
if (u != NULL)
|
|
{
|
|
*name = xmalloc (TTY_NAME_MAX);
|
|
int err = stream_ttyname (u->s, *name, TTY_NAME_MAX);
|
|
if (err == 0)
|
|
{
|
|
*name_len = strlen (*name);
|
|
unlock_unit (u);
|
|
return;
|
|
}
|
|
free (*name);
|
|
unlock_unit (u);
|
|
}
|
|
|
|
*name_len = 0;
|
|
*name = NULL;
|
|
}
|