mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-27 14:50:23 +00:00
271 lines
6.6 KiB
C
271 lines
6.6 KiB
C
/* Implementation of the GETARG and IARGC g77, and
|
|
corresponding F2003, intrinsics.
|
|
Copyright (C) 2004, 2005, 2007, 2009, 2010
|
|
Free Software Foundation, Inc.
|
|
Contributed by Bud Davis and Janne Blomqvist.
|
|
|
|
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 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 "libgfortran.h"
|
|
#include <string.h>
|
|
|
|
|
|
/* Get a commandline argument. */
|
|
|
|
extern void getarg_i4 (GFC_INTEGER_4 *, char *, gfc_charlen_type);
|
|
iexport_proto(getarg_i4);
|
|
|
|
void
|
|
getarg_i4 (GFC_INTEGER_4 *pos, char *val, gfc_charlen_type val_len)
|
|
{
|
|
int argc;
|
|
int arglen;
|
|
char **argv;
|
|
|
|
get_args (&argc, &argv);
|
|
|
|
if (val_len < 1 || !val )
|
|
return; /* something is wrong , leave immediately */
|
|
|
|
memset (val, ' ', val_len);
|
|
|
|
if ((*pos) + 1 <= argc && *pos >=0 )
|
|
{
|
|
arglen = strlen (argv[*pos]);
|
|
if (arglen > val_len)
|
|
arglen = val_len;
|
|
memcpy (val, argv[*pos], arglen);
|
|
}
|
|
}
|
|
iexport(getarg_i4);
|
|
|
|
|
|
/* INTEGER*8 wrapper of getarg. */
|
|
|
|
extern void getarg_i8 (GFC_INTEGER_8 *, char *, gfc_charlen_type);
|
|
export_proto (getarg_i8);
|
|
|
|
void
|
|
getarg_i8 (GFC_INTEGER_8 *pos, char *val, gfc_charlen_type val_len)
|
|
{
|
|
GFC_INTEGER_4 pos4 = (GFC_INTEGER_4) *pos;
|
|
getarg_i4 (&pos4, val, val_len);
|
|
}
|
|
|
|
|
|
/* Return the number of commandline arguments. The g77 info page
|
|
states that iargc does not include the specification of the
|
|
program name itself. */
|
|
|
|
extern GFC_INTEGER_4 iargc (void);
|
|
export_proto(iargc);
|
|
|
|
GFC_INTEGER_4
|
|
iargc (void)
|
|
{
|
|
int argc;
|
|
char **argv;
|
|
|
|
get_args (&argc, &argv);
|
|
|
|
return (argc - 1);
|
|
}
|
|
|
|
|
|
/* F2003 intrinsic functions and subroutines related to command line
|
|
arguments.
|
|
|
|
- function command_argument_count() is converted to iargc by the compiler.
|
|
|
|
- subroutine get_command([command, length, status]).
|
|
|
|
- subroutine get_command_argument(number, [value, length, status]).
|
|
*/
|
|
|
|
/* These two status codes are specified in the standard. */
|
|
#define GFC_GC_SUCCESS 0
|
|
#define GFC_GC_VALUE_TOO_SHORT -1
|
|
|
|
/* Processor-specific status failure code. */
|
|
#define GFC_GC_FAILURE 42
|
|
|
|
|
|
extern void get_command_argument_i4 (GFC_INTEGER_4 *, char *, GFC_INTEGER_4 *,
|
|
GFC_INTEGER_4 *, gfc_charlen_type);
|
|
iexport_proto(get_command_argument_i4);
|
|
|
|
/* Get a single commandline argument. */
|
|
|
|
void
|
|
get_command_argument_i4 (GFC_INTEGER_4 *number, char *value,
|
|
GFC_INTEGER_4 *length, GFC_INTEGER_4 *status,
|
|
gfc_charlen_type value_len)
|
|
{
|
|
int argc, arglen = 0, stat_flag = GFC_GC_SUCCESS;
|
|
char **argv;
|
|
|
|
if (number == NULL )
|
|
/* Should never happen. */
|
|
runtime_error ("Missing argument to get_command_argument");
|
|
|
|
if (value == NULL && length == NULL && status == NULL)
|
|
return; /* No need to do anything. */
|
|
|
|
get_args (&argc, &argv);
|
|
|
|
if (*number < 0 || *number >= argc)
|
|
stat_flag = GFC_GC_FAILURE;
|
|
else
|
|
arglen = strlen(argv[*number]);
|
|
|
|
if (value != NULL)
|
|
{
|
|
if (value_len < 1)
|
|
stat_flag = GFC_GC_FAILURE;
|
|
else
|
|
memset (value, ' ', value_len);
|
|
}
|
|
|
|
if (value != NULL && stat_flag != GFC_GC_FAILURE)
|
|
{
|
|
if (arglen > value_len)
|
|
stat_flag = GFC_GC_VALUE_TOO_SHORT;
|
|
|
|
memcpy (value, argv[*number], arglen <= value_len ? arglen : value_len);
|
|
}
|
|
|
|
if (length != NULL)
|
|
*length = arglen;
|
|
|
|
if (status != NULL)
|
|
*status = stat_flag;
|
|
}
|
|
iexport(get_command_argument_i4);
|
|
|
|
|
|
/* INTEGER*8 wrapper for get_command_argument. */
|
|
|
|
extern void get_command_argument_i8 (GFC_INTEGER_8 *, char *, GFC_INTEGER_8 *,
|
|
GFC_INTEGER_8 *, gfc_charlen_type);
|
|
export_proto(get_command_argument_i8);
|
|
|
|
void
|
|
get_command_argument_i8 (GFC_INTEGER_8 *number, char *value,
|
|
GFC_INTEGER_8 *length, GFC_INTEGER_8 *status,
|
|
gfc_charlen_type value_len)
|
|
{
|
|
GFC_INTEGER_4 number4;
|
|
GFC_INTEGER_4 length4;
|
|
GFC_INTEGER_4 status4;
|
|
|
|
number4 = (GFC_INTEGER_4) *number;
|
|
get_command_argument_i4 (&number4, value, &length4, &status4, value_len);
|
|
if (length)
|
|
*length = length4;
|
|
if (status)
|
|
*status = status4;
|
|
}
|
|
|
|
|
|
/* Return the whole commandline. */
|
|
|
|
extern void get_command_i4 (char *, GFC_INTEGER_4 *, GFC_INTEGER_4 *,
|
|
gfc_charlen_type);
|
|
iexport_proto(get_command_i4);
|
|
|
|
void
|
|
get_command_i4 (char *command, GFC_INTEGER_4 *length, GFC_INTEGER_4 *status,
|
|
gfc_charlen_type command_len)
|
|
{
|
|
int i, argc, arglen, thisarg;
|
|
int stat_flag = GFC_GC_SUCCESS;
|
|
int tot_len = 0;
|
|
char **argv;
|
|
|
|
if (command == NULL && length == NULL && status == NULL)
|
|
return; /* No need to do anything. */
|
|
|
|
get_args (&argc, &argv);
|
|
|
|
if (command != NULL)
|
|
{
|
|
/* Initialize the string to blanks. */
|
|
if (command_len < 1)
|
|
stat_flag = GFC_GC_FAILURE;
|
|
else
|
|
memset (command, ' ', command_len);
|
|
}
|
|
|
|
for (i = 0; i < argc ; i++)
|
|
{
|
|
arglen = strlen(argv[i]);
|
|
|
|
if (command != NULL && stat_flag == GFC_GC_SUCCESS)
|
|
{
|
|
thisarg = arglen;
|
|
if (tot_len + thisarg > command_len)
|
|
{
|
|
thisarg = command_len - tot_len; /* Truncate. */
|
|
stat_flag = GFC_GC_VALUE_TOO_SHORT;
|
|
}
|
|
/* Also a space before the next arg. */
|
|
else if (i != argc - 1 && tot_len + arglen == command_len)
|
|
stat_flag = GFC_GC_VALUE_TOO_SHORT;
|
|
|
|
memcpy (&command[tot_len], argv[i], thisarg);
|
|
}
|
|
|
|
/* Add the legth of the argument. */
|
|
tot_len += arglen;
|
|
if (i != argc - 1)
|
|
tot_len++;
|
|
}
|
|
|
|
if (length != NULL)
|
|
*length = tot_len;
|
|
|
|
if (status != NULL)
|
|
*status = stat_flag;
|
|
}
|
|
iexport(get_command_i4);
|
|
|
|
|
|
/* INTEGER*8 wrapper for get_command. */
|
|
|
|
extern void get_command_i8 (char *, GFC_INTEGER_8 *, GFC_INTEGER_8 *,
|
|
gfc_charlen_type);
|
|
export_proto(get_command_i8);
|
|
|
|
void
|
|
get_command_i8 (char *command, GFC_INTEGER_8 *length, GFC_INTEGER_8 *status,
|
|
gfc_charlen_type command_len)
|
|
{
|
|
GFC_INTEGER_4 length4;
|
|
GFC_INTEGER_4 status4;
|
|
|
|
get_command_i4 (command, &length4, &status4, command_len);
|
|
if (length)
|
|
*length = length4;
|
|
if (status)
|
|
*status = status4;
|
|
}
|