1 /* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
2 Contributed by Paul Brook
4 This file is part of the GNU Fortran 95 runtime library (libgfortran).
6 Libgfortran is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 In addition to the permissions in the GNU General Public License, the
12 Free Software Foundation gives you unlimited permission to link the
13 compiled version of this file into combinations with other programs,
14 and to distribute those combinations without any restriction coming
15 from the use of this file. (The General Public License restrictions
16 do apply in other respects; for example, they cover modification of
17 the file, and distribution when not linked into a combine
20 Libgfortran is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with libgfortran; see the file COPYING. If not, write to
27 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
28 Boston, MA 02110-1301, USA. */
33 #include "libgfortran.h"
35 /* Compare a C-style string with a fortran style string in a case-insensitive
36 manner. Used for decoding string options to various statements. Returns
37 zero if not equal, nonzero if equal. */
40 compare0 (const char *s1
, gfc_charlen_type s1_len
, const char *s2
)
44 /* Strip trailing blanks from the Fortran string. */
45 len
= fstrlen (s1
, s1_len
);
46 if (len
!= strlen(s2
)) return 0; /* don't match */
47 return strncasecmp (s1
, s2
, len
) == 0;
51 /* Given a fortran string, return its length exclusive of the trailing
55 fstrlen (const char *string
, gfc_charlen_type len
)
57 for (; len
> 0; len
--)
58 if (string
[len
-1] != ' ')
65 /* Copy a Fortran string (not null-terminated, hence length arguments
66 for both source and destination strings. Returns the non-padded
67 length of the destination. */
70 fstrcpy (char *dest
, gfc_charlen_type destlen
,
71 const char *src
, gfc_charlen_type srclen
)
73 if (srclen
>= destlen
)
75 /* This will truncate if too long. */
76 memcpy (dest
, src
, destlen
);
81 memcpy (dest
, src
, srclen
);
82 /* Pad with spaces. */
83 memset (&dest
[srclen
], ' ', destlen
- srclen
);
89 /* Copy a null-terminated C string to a non-null-terminated Fortran
90 string. Returns the non-padded length of the destination string. */
93 cf_strcpy (char *dest
, gfc_charlen_type dest_len
, const char *src
)
97 src_len
= strlen (src
);
99 if (src_len
>= (size_t) dest_len
)
101 /* This will truncate if too long. */
102 memcpy (dest
, src
, dest_len
);
107 memcpy (dest
, src
, src_len
);
108 /* Pad with spaces. */
109 memset (&dest
[src_len
], ' ', dest_len
- src_len
);
115 /* Given a fortran string and an array of st_option structures, search through
116 the array to find a match. If the option is not found, we generate an error
117 if no default is provided. */
120 find_option (st_parameter_common
*cmp
, const char *s1
, gfc_charlen_type s1_len
,
121 const st_option
* opts
, const char *error_message
)
123 for (; opts
->name
; opts
++)
124 if (compare0 (s1
, s1_len
, opts
->name
))
127 generate_error (cmp
, ERROR_BAD_OPTION
, error_message
);