+++ /dev/null
-/* A more useful interface to strtol.
- Copyright (C) 1995, 1996, 1998-2001 Free Software Foundation, Inc.
-
- This program 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 2, or (at your option)
- any later version.
-
- This program 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.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-/* Written by Jim Meyering. */
-
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#ifndef __strtol
-# define __strtol strtol
-# define __strtol_t long int
-# define __xstrtol xstrtol
-#endif
-
-/* Some pre-ANSI implementations (e.g. SunOS 4)
- need stderr defined if assertion checking is enabled. */
-#include <stdio.h>
-
-#if STDC_HEADERS
-# include <stdlib.h>
-#endif
-
-#if HAVE_STRING_H
-# include <string.h>
-#else
-# include <strings.h>
-# ifndef strchr
-# define strchr index
-# endif
-#endif
-
-#include <assert.h>
-#include <ctype.h>
-
-#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
-
-#if HAVE_LIMITS_H
-# include <limits.h>
-#endif
-
-#ifndef CHAR_BIT
-# define CHAR_BIT 8
-#endif
-
-/* The extra casts work around common compiler bugs. */
-#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
-/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
- It is necessary at least when t == time_t. */
-#define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
- ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
-#define TYPE_MAXIMUM(t) (~ (t) 0 - TYPE_MINIMUM (t))
-
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
-
-#include "xstrtol.h"
-
-#if !HAVE_DECL_STRTOL && !defined strtol
-long int strtol ();
-#endif
-
-#if !HAVE_DECL_STRTOUL && !defined strtoul
-unsigned long int strtoul ();
-#endif
-
-#if !HAVE_DECL_STRTOIMAX && !defined strtoimax
-intmax_t strtoimax ();
-#endif
-
-#if !HAVE_DECL_STRTOUMAX && !defined strtoumax
-uintmax_t strtoumax ();
-#endif
-
-static int
-bkm_scale (__strtol_t *x, int scale_factor)
-{
- __strtol_t product = *x * scale_factor;
- if (*x != product / scale_factor)
- return 1;
- *x = product;
- return 0;
-}
-
-static int
-bkm_scale_by_power (__strtol_t *x, int base, int power)
-{
- while (power--)
- if (bkm_scale (x, base))
- return 1;
-
- return 0;
-}
-
-/* FIXME: comment. */
-
-strtol_error
-__xstrtol (const char *s, char **ptr, int strtol_base,
- __strtol_t *val, const char *valid_suffixes)
-{
- char *t_ptr;
- char **p;
- __strtol_t tmp;
-
- assert (0 <= strtol_base && strtol_base <= 36);
-
- p = (ptr ? ptr : &t_ptr);
-
- if (! TYPE_SIGNED (__strtol_t))
- {
- const char *q = s;
- while (ISSPACE ((unsigned char) *q))
- ++q;
- if (*q == '-')
- return LONGINT_INVALID;
- }
-
- errno = 0;
- tmp = __strtol (s, p, strtol_base);
- if (errno != 0)
- return LONGINT_OVERFLOW;
- if (*p == s)
- return LONGINT_INVALID;
-
- /* Let valid_suffixes == NULL mean `allow any suffix'. */
- /* FIXME: update all callers except the ones that allow suffixes
- after the number, changing last parameter NULL to `""'. */
- if (!valid_suffixes)
- {
- *val = tmp;
- return LONGINT_OK;
- }
-
- if (**p != '\0')
- {
- int base = 1024;
- int suffixes = 1;
- int overflow;
-
- if (!strchr (valid_suffixes, **p))
- {
- *val = tmp;
- return LONGINT_INVALID_SUFFIX_CHAR;
- }
-
- if (strchr (valid_suffixes, '0'))
- {
- /* The ``valid suffix'' '0' is a special flag meaning that
- an optional second suffix is allowed, which can change
- the base, e.g. "100MD" for 100 megabytes decimal. */
-
- switch (p[0][1])
- {
- case 'B':
- suffixes++;
- break;
-
- case 'D':
- base = 1000;
- suffixes++;
- break;
- }
- }
-
- switch (**p)
- {
- case 'b':
- overflow = bkm_scale (&tmp, 512);
- break;
-
- case 'B':
- overflow = bkm_scale (&tmp, 1024);
- break;
-
- case 'c':
- overflow = 0;
- break;
-
- case 'E': /* Exa */
- overflow = bkm_scale_by_power (&tmp, base, 6);
- break;
-
- case 'G': /* Giga */
- case 'g': /* 'g' is undocumented; for compatibility only */
- overflow = bkm_scale_by_power (&tmp, base, 3);
- break;
-
- case 'k': /* kilo */
- overflow = bkm_scale_by_power (&tmp, base, 1);
- break;
-
- case 'M': /* Mega */
- case 'm': /* 'm' is undocumented; for compatibility only */
- overflow = bkm_scale_by_power (&tmp, base, 2);
- break;
-
- case 'P': /* Peta */
- overflow = bkm_scale_by_power (&tmp, base, 5);
- break;
-
- case 'T': /* Tera */
- case 't': /* 't' is undocumented; for compatibility only */
- overflow = bkm_scale_by_power (&tmp, base, 4);
- break;
-
- case 'w':
- overflow = bkm_scale (&tmp, 2);
- break;
-
- case 'Y': /* Yotta */
- overflow = bkm_scale_by_power (&tmp, base, 8);
- break;
-
- case 'Z': /* Zetta */
- overflow = bkm_scale_by_power (&tmp, base, 7);
- break;
-
- default:
- *val = tmp;
- return LONGINT_INVALID_SUFFIX_CHAR;
- break;
- }
-
- if (overflow)
- return LONGINT_OVERFLOW;
-
- (*p) += suffixes;
- }
-
- *val = tmp;
- return LONGINT_OK;
-}
-
-#ifdef TESTING_XSTRTO
-
-# include <stdio.h>
-# include "error.h"
-
-char *program_name;
-
-int
-main (int argc, char** argv)
-{
- strtol_error s_err;
- int i;
-
- program_name = argv[0];
- for (i=1; i<argc; i++)
- {
- char *p;
- __strtol_t val;
-
- s_err = __xstrtol (argv[i], &p, 0, &val, "bckmw");
- if (s_err == LONGINT_OK)
- {
- printf ("%s->%lu (%s)\n", argv[i], val, p);
- }
- else
- {
- STRTOL_FATAL_ERROR (argv[i], "arg", s_err);
- }
- }
- exit (0);
-}
-
-#endif /* TESTING_XSTRTO */
projects / chaz / tar / blobdiff