[1765] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * ascii-to-numbers implementations for busybox
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| 4 | *
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| 5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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| 6 | *
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| 7 | * Licensed under GPLv2, see file LICENSE in this tarball for details.
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| 8 | */
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| 9 |
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| 10 | /* Provides extern declarations of functions */
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| 11 | #define DECLARE_STR_CONV(type, T, UT) \
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| 12 | \
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| 13 | unsigned type xstrto##UT##_range_sfx(const char *str, int b, unsigned type l, unsigned type u, const struct suffix_mult *sfx); \
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| 14 | unsigned type xstrto##UT##_range(const char *str, int b, unsigned type l, unsigned type u); \
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| 15 | unsigned type xstrto##UT##_sfx(const char *str, int b, const struct suffix_mult *sfx); \
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| 16 | unsigned type xstrto##UT(const char *str, int b); \
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| 17 | unsigned type xato##UT##_range_sfx(const char *str, unsigned type l, unsigned type u, const struct suffix_mult *sfx); \
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| 18 | unsigned type xato##UT##_range(const char *str, unsigned type l, unsigned type u); \
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| 19 | unsigned type xato##UT##_sfx(const char *str, const struct suffix_mult *sfx); \
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| 20 | unsigned type xato##UT(const char *str); \
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| 21 | type xstrto##T##_range_sfx(const char *str, int b, type l, type u, const struct suffix_mult *sfx); \
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| 22 | type xstrto##T##_range(const char *str, int b, type l, type u); \
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| 23 | type xato##T##_range_sfx(const char *str, type l, type u, const struct suffix_mult *sfx); \
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| 24 | type xato##T##_range(const char *str, type l, type u); \
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| 25 | type xato##T##_sfx(const char *str, const struct suffix_mult *sfx); \
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| 26 | type xato##T(const char *str); \
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| 27 |
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| 28 | /* Unsigned long long functions always exist */
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| 29 | DECLARE_STR_CONV(long long, ll, ull)
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| 30 |
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| 31 |
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| 32 | /* Provides inline definitions of functions */
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| 33 | /* (useful for mapping them to the type of the same width) */
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| 34 | #define DEFINE_EQUIV_STR_CONV(narrow, N, W, UN, UW) \
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| 35 | \
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| 36 | static ALWAYS_INLINE \
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| 37 | unsigned narrow xstrto##UN##_range_sfx(const char *str, int b, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \
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| 38 | { return xstrto##UW##_range_sfx(str, b, l, u, sfx); } \
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| 39 | static ALWAYS_INLINE \
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| 40 | unsigned narrow xstrto##UN##_range(const char *str, int b, unsigned narrow l, unsigned narrow u) \
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| 41 | { return xstrto##UW##_range(str, b, l, u); } \
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| 42 | static ALWAYS_INLINE \
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| 43 | unsigned narrow xstrto##UN##_sfx(const char *str, int b, const struct suffix_mult *sfx) \
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| 44 | { return xstrto##UW##_sfx(str, b, sfx); } \
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| 45 | static ALWAYS_INLINE \
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| 46 | unsigned narrow xstrto##UN(const char *str, int b) \
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| 47 | { return xstrto##UW(str, b); } \
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| 48 | static ALWAYS_INLINE \
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| 49 | unsigned narrow xato##UN##_range_sfx(const char *str, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \
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| 50 | { return xato##UW##_range_sfx(str, l, u, sfx); } \
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| 51 | static ALWAYS_INLINE \
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| 52 | unsigned narrow xato##UN##_range(const char *str, unsigned narrow l, unsigned narrow u) \
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| 53 | { return xato##UW##_range(str, l, u); } \
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| 54 | static ALWAYS_INLINE \
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| 55 | unsigned narrow xato##UN##_sfx(const char *str, const struct suffix_mult *sfx) \
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| 56 | { return xato##UW##_sfx(str, sfx); } \
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| 57 | static ALWAYS_INLINE \
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| 58 | unsigned narrow xato##UN(const char *str) \
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| 59 | { return xato##UW(str); } \
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| 60 | static ALWAYS_INLINE \
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| 61 | narrow xstrto##N##_range_sfx(const char *str, int b, narrow l, narrow u, const struct suffix_mult *sfx) \
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| 62 | { return xstrto##W##_range_sfx(str, b, l, u, sfx); } \
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| 63 | static ALWAYS_INLINE \
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| 64 | narrow xstrto##N##_range(const char *str, int b, narrow l, narrow u) \
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| 65 | { return xstrto##W##_range(str, b, l, u); } \
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| 66 | static ALWAYS_INLINE \
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| 67 | narrow xato##N##_range_sfx(const char *str, narrow l, narrow u, const struct suffix_mult *sfx) \
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| 68 | { return xato##W##_range_sfx(str, l, u, sfx); } \
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| 69 | static ALWAYS_INLINE \
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| 70 | narrow xato##N##_range(const char *str, narrow l, narrow u) \
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| 71 | { return xato##W##_range(str, l, u); } \
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| 72 | static ALWAYS_INLINE \
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| 73 | narrow xato##N##_sfx(const char *str, const struct suffix_mult *sfx) \
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| 74 | { return xato##W##_sfx(str, sfx); } \
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| 75 | static ALWAYS_INLINE \
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| 76 | narrow xato##N(const char *str) \
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| 77 | { return xato##W(str); } \
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| 78 |
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| 79 | /* If long == long long, then just map them one-to-one */
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| 80 | #if ULONG_MAX == ULLONG_MAX
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| 81 | DEFINE_EQUIV_STR_CONV(long, l, ll, ul, ull)
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| 82 | #else
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| 83 | /* Else provide extern defs */
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| 84 | DECLARE_STR_CONV(long, l, ul)
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| 85 | #endif
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| 86 |
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| 87 | /* Same for int -> [long] long */
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| 88 | #if UINT_MAX == ULLONG_MAX
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| 89 | DEFINE_EQUIV_STR_CONV(int, i, ll, u, ull)
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| 90 | #elif UINT_MAX == ULONG_MAX
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| 91 | DEFINE_EQUIV_STR_CONV(int, i, l, u, ul)
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| 92 | #else
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| 93 | DECLARE_STR_CONV(int, i, u)
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| 94 | #endif
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| 95 |
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| 96 | /* Specialized */
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| 97 |
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| 98 | int BUG_xatou32_unimplemented(void);
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| 99 | static ALWAYS_INLINE uint32_t xatou32(const char *numstr)
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| 100 | {
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| 101 | if (UINT_MAX == 0xffffffff)
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| 102 | return xatou(numstr);
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| 103 | if (ULONG_MAX == 0xffffffff)
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| 104 | return xatoul(numstr);
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| 105 | return BUG_xatou32_unimplemented();
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| 106 | }
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| 107 |
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| 108 | /* Non-aborting kind of convertors */
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| 109 |
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| 110 | unsigned long long bb_strtoull(const char *arg, char **endp, int base);
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| 111 | long long bb_strtoll(const char *arg, char **endp, int base);
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| 112 |
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| 113 | #if ULONG_MAX == ULLONG_MAX
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| 114 | static ALWAYS_INLINE
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| 115 | unsigned long bb_strtoul(const char *arg, char **endp, int base)
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| 116 | { return bb_strtoull(arg, endp, base); }
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| 117 | static ALWAYS_INLINE
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| 118 | long bb_strtol(const char *arg, char **endp, int base)
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| 119 | { return bb_strtoll(arg, endp, base); }
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| 120 | #else
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| 121 | unsigned long bb_strtoul(const char *arg, char **endp, int base);
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| 122 | long bb_strtol(const char *arg, char **endp, int base);
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| 123 | #endif
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| 124 |
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| 125 | #if UINT_MAX == ULLONG_MAX
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| 126 | static ALWAYS_INLINE
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| 127 | unsigned bb_strtou(const char *arg, char **endp, int base)
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| 128 | { return bb_strtoull(arg, endp, base); }
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| 129 | static ALWAYS_INLINE
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| 130 | int bb_strtoi(const char *arg, char **endp, int base)
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| 131 | { return bb_strtoll(arg, endp, base); }
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| 132 | #elif UINT_MAX == ULONG_MAX
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| 133 | static ALWAYS_INLINE
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| 134 | unsigned bb_strtou(const char *arg, char **endp, int base)
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| 135 | { return bb_strtoul(arg, endp, base); }
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| 136 | static ALWAYS_INLINE
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| 137 | int bb_strtoi(const char *arg, char **endp, int base)
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| 138 | { return bb_strtol(arg, endp, base); }
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| 139 | #else
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| 140 | unsigned bb_strtou(const char *arg, char **endp, int base);
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| 141 | int bb_strtoi(const char *arg, char **endp, int base);
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| 142 | #endif
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| 143 |
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| 144 | int BUG_bb_strtou32_unimplemented(void);
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| 145 | static ALWAYS_INLINE
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| 146 | uint32_t bb_strtou32(const char *arg, char **endp, int base)
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| 147 | {
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| 148 | if (sizeof(uint32_t) == sizeof(unsigned))
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| 149 | return bb_strtou(arg, endp, base);
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| 150 | if (sizeof(uint32_t) == sizeof(unsigned long))
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| 151 | return bb_strtoul(arg, endp, base);
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| 152 | return BUG_bb_strtou32_unimplemented();
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| 153 | }
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| 154 |
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| 155 | /* Floating point */
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| 156 |
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| 157 | /* double bb_strtod(const char *arg, char **endp); */
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