127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
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Contributed by Paul Brook
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libgfortran.h"
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#include <string.h>
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/* Compare a C-style string with a fortran style string in a case-insensitive
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manner. Used for decoding string options to various statements. Returns
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zero if not equal, nonzero if equal. */
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static int
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compare0 (const char *s1, gfc_charlen_type s1_len, const char *s2)
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{
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gfc_charlen_type len;
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/* Strip trailing blanks from the Fortran string. */
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len = fstrlen (s1, s1_len);
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if ((size_t) len != strlen(s2))
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return 0; /* don't match */
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return strncasecmp (s1, s2, len) == 0;
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}
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/* Given a fortran string, return its length exclusive of the trailing
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spaces. */
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gfc_charlen_type
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fstrlen (const char *string, gfc_charlen_type len)
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{
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for (; len > 0; len--)
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if (string[len-1] != ' ')
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break;
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return len;
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}
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/* Copy a Fortran string (not null-terminated, hence length arguments
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for both source and destination strings. Returns the non-padded
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length of the destination. */
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gfc_charlen_type
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fstrcpy (char *dest, gfc_charlen_type destlen,
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const char *src, gfc_charlen_type srclen)
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{
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if (srclen >= destlen)
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{
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/* This will truncate if too long. */
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memcpy (dest, src, destlen);
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return destlen;
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}
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else
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{
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memcpy (dest, src, srclen);
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/* Pad with spaces. */
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memset (&dest[srclen], ' ', destlen - srclen);
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return srclen;
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}
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}
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/* Copy a null-terminated C string to a non-null-terminated Fortran
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string. Returns the non-padded length of the destination string. */
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gfc_charlen_type
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cf_strcpy (char *dest, gfc_charlen_type dest_len, const char *src)
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{
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size_t src_len;
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src_len = strlen (src);
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if (src_len >= (size_t) dest_len)
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{
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/* This will truncate if too long. */
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memcpy (dest, src, dest_len);
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return dest_len;
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}
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else
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{
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memcpy (dest, src, src_len);
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/* Pad with spaces. */
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memset (&dest[src_len], ' ', dest_len - src_len);
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return src_len;
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}
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}
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/* Given a fortran string and an array of st_option structures, search through
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the array to find a match. If the option is not found, we generate an error
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if no default is provided. */
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int
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find_option (st_parameter_common *cmp, const char *s1, gfc_charlen_type s1_len,
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const st_option * opts, const char *error_message)
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{
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for (; opts->name; opts++)
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if (compare0 (s1, s1_len, opts->name))
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return opts->value;
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generate_error (cmp, LIBERROR_BAD_OPTION, error_message);
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return -1;
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}
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