124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
|
|
Contributed by Paul Brook
|
|
|
|
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, 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>
|
|
|
|
/* Compare a C-style string with a fortran style string in a case-insensitive
|
|
manner. Used for decoding string options to various statements. Returns
|
|
zero if not equal, nonzero if equal. */
|
|
|
|
static int
|
|
compare0 (const char *s1, gfc_charlen_type s1_len, const char *s2)
|
|
{
|
|
gfc_charlen_type len;
|
|
|
|
/* Strip trailing blanks from the Fortran string. */
|
|
len = fstrlen (s1, s1_len);
|
|
if (len != strlen(s2)) return 0; /* don't match */
|
|
return strncasecmp (s1, s2, len) == 0;
|
|
}
|
|
|
|
|
|
/* Given a fortran string, return its length exclusive of the trailing
|
|
spaces. */
|
|
|
|
gfc_charlen_type
|
|
fstrlen (const char *string, gfc_charlen_type len)
|
|
{
|
|
for (; len > 0; len--)
|
|
if (string[len-1] != ' ')
|
|
break;
|
|
|
|
return len;
|
|
}
|
|
|
|
|
|
/* Copy a Fortran string (not null-terminated, hence length arguments
|
|
for both source and destination strings. Returns the non-padded
|
|
length of the destination. */
|
|
|
|
gfc_charlen_type
|
|
fstrcpy (char *dest, gfc_charlen_type destlen,
|
|
const char *src, gfc_charlen_type srclen)
|
|
{
|
|
if (srclen >= destlen)
|
|
{
|
|
/* This will truncate if too long. */
|
|
memcpy (dest, src, destlen);
|
|
return destlen;
|
|
}
|
|
else
|
|
{
|
|
memcpy (dest, src, srclen);
|
|
/* Pad with spaces. */
|
|
memset (&dest[srclen], ' ', destlen - srclen);
|
|
return srclen;
|
|
}
|
|
}
|
|
|
|
|
|
/* Copy a null-terminated C string to a non-null-terminated Fortran
|
|
string. Returns the non-padded length of the destination string. */
|
|
|
|
gfc_charlen_type
|
|
cf_strcpy (char *dest, gfc_charlen_type dest_len, const char *src)
|
|
{
|
|
size_t src_len;
|
|
|
|
src_len = strlen (src);
|
|
|
|
if (src_len >= (size_t) dest_len)
|
|
{
|
|
/* This will truncate if too long. */
|
|
memcpy (dest, src, dest_len);
|
|
return dest_len;
|
|
}
|
|
else
|
|
{
|
|
memcpy (dest, src, src_len);
|
|
/* Pad with spaces. */
|
|
memset (&dest[src_len], ' ', dest_len - src_len);
|
|
return src_len;
|
|
}
|
|
}
|
|
|
|
|
|
/* Given a fortran string and an array of st_option structures, search through
|
|
the array to find a match. If the option is not found, we generate an error
|
|
if no default is provided. */
|
|
|
|
int
|
|
find_option (st_parameter_common *cmp, const char *s1, gfc_charlen_type s1_len,
|
|
const st_option * opts, const char *error_message)
|
|
{
|
|
for (; opts->name; opts++)
|
|
if (compare0 (s1, s1_len, opts->name))
|
|
return opts->value;
|
|
|
|
generate_error (cmp, LIBERROR_BAD_OPTION, error_message);
|
|
|
|
return -1;
|
|
}
|