Assume C89, so PARAMS isn't needed.
[gnulib.git] / lib / xstrtol.h
1 /* A more useful interface to strtol.
2
3    Copyright (C) 1995, 1996, 1998, 1999, 2001, 2002, 2003 Free
4    Software Foundation, Inc.
5
6    This program 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)
9    any later version.
10
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15
16    You should have received a copy of the GNU General Public License
17    along with this program; if not, write to the Free Software Foundation,
18    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
19
20 #ifndef XSTRTOL_H_
21 # define XSTRTOL_H_ 1
22
23 /* Get uintmax_t.  */
24 # if HAVE_INTTYPES_H
25 #  include <inttypes.h>
26 # else
27 #  if HAVE_STDINT_H
28 #   include <stdint.h>
29 #  endif
30 # endif
31
32 # ifndef _STRTOL_ERROR
33 enum strtol_error
34   {
35     LONGINT_OK, LONGINT_INVALID, LONGINT_INVALID_SUFFIX_CHAR, LONGINT_OVERFLOW
36   };
37 typedef enum strtol_error strtol_error;
38 # endif
39
40 # define _DECLARE_XSTRTOL(name, type) \
41   strtol_error name (const char *, char **, int, type *, const char *);
42 _DECLARE_XSTRTOL (xstrtol, long int)
43 _DECLARE_XSTRTOL (xstrtoul, unsigned long int)
44 _DECLARE_XSTRTOL (xstrtoimax, intmax_t)
45 _DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
46
47 # define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err)       \
48   do                                                                    \
49     {                                                                   \
50       switch ((Err))                                                    \
51         {                                                               \
52         case LONGINT_OK:                                                \
53           abort ();                                                     \
54                                                                         \
55         case LONGINT_INVALID:                                           \
56           error ((Exit_code), 0, "invalid %s `%s'",                     \
57                  (Argument_type_string), (Str));                        \
58           break;                                                        \
59                                                                         \
60         case LONGINT_INVALID_SUFFIX_CHAR:                               \
61           error ((Exit_code), 0, "invalid character following %s in `%s'", \
62                  (Argument_type_string), (Str));                        \
63           break;                                                        \
64                                                                         \
65         case LONGINT_OVERFLOW:                                          \
66           error ((Exit_code), 0, "%s `%s' too large",                   \
67                  (Argument_type_string), (Str));                        \
68           break;                                                        \
69         }                                                               \
70     }                                                                   \
71   while (0)
72
73 # define STRTOL_FATAL_ERROR(Str, Argument_type_string, Err)             \
74   _STRTOL_ERROR (2, Str, Argument_type_string, Err)
75
76 # define STRTOL_FAIL_WARN(Str, Argument_type_string, Err)               \
77   _STRTOL_ERROR (0, Str, Argument_type_string, Err)
78
79 #endif /* not XSTRTOL_H_ */