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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [io/] [intrinsics.c] - Rev 796
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/* Implementation of the FGET, FGETC, FPUT, FPUTC, FLUSH FTELL, TTYNAM and ISATTY intrinsics. Copyright (C) 2005, 2007, 2009, 2010, 2011 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; } extern size_t PREFIX(ftell) (int *); export_proto_np(PREFIX(ftell)); size_t PREFIX(ftell) (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 = get_mem (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; }
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