LXR busybox/libbb/xatonum.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * ascii-to-numbers implementations for busybox
   4 *
   5 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
   6 *
   7 * Licensed under GPLv2, see file LICENSE in this source tree.
   8 */
   9
  10#include "libbb.h"
  11
  12#define type long long
  13#define xstrtou(rest) xstrtoull##rest
  14#define xstrto(rest) xstrtoll##rest
  15#define xatou(rest) xatoull##rest
  16#define xato(rest) xatoll##rest
  17#define XSTR_UTYPE_MAX ULLONG_MAX
  18#define XSTR_TYPE_MAX LLONG_MAX
  19#define XSTR_TYPE_MIN LLONG_MIN
  20#define XSTR_STRTOU strtoull
  21#include "xatonum_template.c"
  22
  23#if ULONG_MAX != ULLONG_MAX
  24#define type long
  25#define xstrtou(rest) xstrtoul##rest
  26#define xstrto(rest) xstrtol##rest
  27#define xatou(rest) xatoul##rest
  28#define xato(rest) xatol##rest
  29#define XSTR_UTYPE_MAX ULONG_MAX
  30#define XSTR_TYPE_MAX LONG_MAX
  31#define XSTR_TYPE_MIN LONG_MIN
  32#define XSTR_STRTOU strtoul
  33#include "xatonum_template.c"
  34#endif
  35
  36#if UINT_MAX != ULONG_MAX
  37static ALWAYS_INLINE
  38unsigned bb_strtoui(const char *str, char **end, int b)
  39{
  40        unsigned long v = strtoul(str, end, b);
  41        if (v > UINT_MAX) {
  42                errno = ERANGE;
  43                return UINT_MAX;
  44        }
  45        return v;
  46}
  47#define type int
  48#define xstrtou(rest) xstrtou##rest
  49#define xstrto(rest) xstrtoi##rest
  50#define xatou(rest) xatou##rest
  51#define xato(rest) xatoi##rest
  52#define XSTR_UTYPE_MAX UINT_MAX
  53#define XSTR_TYPE_MAX INT_MAX
  54#define XSTR_TYPE_MIN INT_MIN
  55/* libc has no strtoui, so we need to create/use our own */
  56#define XSTR_STRTOU bb_strtoui
  57#include "xatonum_template.c"
  58#endif
  59
  60/* A few special cases */
  61
  62int FAST_FUNC xatoi_positive(const char *numstr)
  63{
  64        return xatou_range(numstr, 0, INT_MAX);
  65}
  66
  67uint16_t FAST_FUNC xatou16(const char *numstr)
  68{
  69        return xatou_range(numstr, 0, 0xffff);
  70}
  71