hush/libbb/xatonum.c
Denys Vlasenko e184a88356 df: implement -B n<suff> and -B <suff> formats of -B option
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-12-12 19:56:31 +01:00

118 lines
2.7 KiB
C

/* vi: set sw=4 ts=4: */
/*
* ascii-to-numbers implementations for busybox
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "libbb.h"
#define type long long
#define xstrtou(rest) xstrtoull##rest
#define xstrto(rest) xstrtoll##rest
#define xatou(rest) xatoull##rest
#define xato(rest) xatoll##rest
#define XSTR_UTYPE_MAX ULLONG_MAX
#define XSTR_TYPE_MAX LLONG_MAX
#define XSTR_TYPE_MIN LLONG_MIN
#define XSTR_STRTOU strtoull
#include "xatonum_template.c"
#if ULONG_MAX != ULLONG_MAX
#define type long
#define xstrtou(rest) xstrtoul##rest
#define xstrto(rest) xstrtol##rest
#define xatou(rest) xatoul##rest
#define xato(rest) xatol##rest
#define XSTR_UTYPE_MAX ULONG_MAX
#define XSTR_TYPE_MAX LONG_MAX
#define XSTR_TYPE_MIN LONG_MIN
#define XSTR_STRTOU strtoul
#include "xatonum_template.c"
#endif
#if UINT_MAX != ULONG_MAX
static ALWAYS_INLINE
unsigned bb_strtoui(const char *str, char **end, int b)
{
unsigned long v = strtoul(str, end, b);
if (v > UINT_MAX) {
errno = ERANGE;
return UINT_MAX;
}
return v;
}
#define type int
#define xstrtou(rest) xstrtou##rest
#define xstrto(rest) xstrtoi##rest
#define xatou(rest) xatou##rest
#define xato(rest) xatoi##rest
#define XSTR_UTYPE_MAX UINT_MAX
#define XSTR_TYPE_MAX INT_MAX
#define XSTR_TYPE_MIN INT_MIN
/* libc has no strtoui, so we need to create/use our own */
#define XSTR_STRTOU bb_strtoui
#include "xatonum_template.c"
#endif
/* A few special cases */
int FAST_FUNC xatoi_positive(const char *numstr)
{
return xatou_range(numstr, 0, INT_MAX);
}
uint16_t FAST_FUNC xatou16(const char *numstr)
{
return xatou_range(numstr, 0, 0xffff);
}
const struct suffix_mult bkm_suffixes[] = {
{ "b", 512 },
{ "k", 1024 },
{ "m", 1024*1024 },
{ "", 0 }
};
const struct suffix_mult cwbkMG_suffixes[] = {
{ "c", 1 },
{ "w", 2 },
{ "b", 512 },
{ "kB", 1000 },
{ "kD", 1000 },
{ "k", 1024 },
{ "KB", 1000 }, /* compat with coreutils dd */
{ "KD", 1000 }, /* compat with coreutils dd */
{ "K", 1024 }, /* compat with coreutils dd */
{ "MB", 1000000 },
{ "MD", 1000000 },
{ "M", 1024*1024 },
{ "GB", 1000000000 },
{ "GD", 1000000000 },
{ "G", 1024*1024*1024 },
/* "D" suffix for decimal is not in coreutils manpage, looks like it's deprecated */
/* coreutils also understands TPEZY suffixes for tera- and so on, with B suffix for decimal */
{ "", 0 }
};
const struct suffix_mult kmg_i_suffixes[] = {
{ "KiB", 1024 },
{ "kiB", 1024 },
{ "K", 1024 },
{ "k", 1024 },
{ "MiB", 1048576 },
{ "miB", 1048576 },
{ "M", 1048576 },
{ "m", 1048576 },
{ "GiB", 1073741824 },
{ "giB", 1073741824 },
{ "G", 1073741824 },
{ "g", 1073741824 },
{ "KB", 1000 },
{ "MB", 1000000 },
{ "GB", 1000000000 },
{ "", 0 }
};