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 source tree.
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8 | */
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9 |
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10 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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11 |
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12 | /* Provides extern declarations of functions */
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13 | #define DECLARE_STR_CONV(type, T, UT) \
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14 | \
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15 | unsigned type xstrto##UT##_range_sfx(const char *str, int b, unsigned type l, unsigned type u, const struct suffix_mult *sfx) FAST_FUNC; \
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16 | unsigned type xstrto##UT##_range(const char *str, int b, unsigned type l, unsigned type u) FAST_FUNC; \
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17 | unsigned type xstrto##UT##_sfx(const char *str, int b, const struct suffix_mult *sfx) FAST_FUNC; \
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18 | unsigned type xstrto##UT(const char *str, int b) FAST_FUNC; \
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19 | unsigned type xato##UT##_range_sfx(const char *str, unsigned type l, unsigned type u, const struct suffix_mult *sfx) FAST_FUNC; \
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20 | unsigned type xato##UT##_range(const char *str, unsigned type l, unsigned type u) FAST_FUNC; \
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21 | unsigned type xato##UT##_sfx(const char *str, const struct suffix_mult *sfx) FAST_FUNC; \
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22 | unsigned type xato##UT(const char *str) FAST_FUNC; \
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23 | type xstrto##T##_range_sfx(const char *str, int b, type l, type u, const struct suffix_mult *sfx) FAST_FUNC; \
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24 | type xstrto##T##_range(const char *str, int b, type l, type u) FAST_FUNC; \
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25 | type xstrto##T(const char *str, int b) FAST_FUNC; \
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26 | type xato##T##_range_sfx(const char *str, type l, type u, const struct suffix_mult *sfx) FAST_FUNC; \
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27 | type xato##T##_range(const char *str, type l, type u) FAST_FUNC; \
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28 | type xato##T##_sfx(const char *str, const struct suffix_mult *sfx) FAST_FUNC; \
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29 | type xato##T(const char *str) FAST_FUNC; \
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30 |
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31 | /* Unsigned long long functions always exist */
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32 | DECLARE_STR_CONV(long long, ll, ull)
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33 |
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34 |
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35 | /* Provides inline definitions of functions */
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36 | /* (useful for mapping them to the type of the same width) */
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37 | #define DEFINE_EQUIV_STR_CONV(narrow, N, W, UN, UW) \
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38 | \
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39 | static ALWAYS_INLINE \
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40 | 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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41 | { return xstrto##UW##_range_sfx(str, b, l, u, sfx); } \
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42 | static ALWAYS_INLINE \
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43 | unsigned narrow xstrto##UN##_range(const char *str, int b, unsigned narrow l, unsigned narrow u) \
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44 | { return xstrto##UW##_range(str, b, l, u); } \
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45 | static ALWAYS_INLINE \
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46 | unsigned narrow xstrto##UN##_sfx(const char *str, int b, const struct suffix_mult *sfx) \
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47 | { return xstrto##UW##_sfx(str, b, sfx); } \
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48 | static ALWAYS_INLINE \
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49 | unsigned narrow xstrto##UN(const char *str, int b) \
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50 | { return xstrto##UW(str, b); } \
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51 | static ALWAYS_INLINE \
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52 | unsigned narrow xato##UN##_range_sfx(const char *str, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \
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53 | { return xato##UW##_range_sfx(str, l, u, sfx); } \
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54 | static ALWAYS_INLINE \
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55 | unsigned narrow xato##UN##_range(const char *str, unsigned narrow l, unsigned narrow u) \
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56 | { return xato##UW##_range(str, l, u); } \
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57 | static ALWAYS_INLINE \
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58 | unsigned narrow xato##UN##_sfx(const char *str, const struct suffix_mult *sfx) \
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59 | { return xato##UW##_sfx(str, sfx); } \
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60 | static ALWAYS_INLINE \
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61 | unsigned narrow xato##UN(const char *str) \
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62 | { return xato##UW(str); } \
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63 | static ALWAYS_INLINE \
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64 | narrow xstrto##N##_range_sfx(const char *str, int b, narrow l, narrow u, const struct suffix_mult *sfx) \
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65 | { return xstrto##W##_range_sfx(str, b, l, u, sfx); } \
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66 | static ALWAYS_INLINE \
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67 | narrow xstrto##N##_range(const char *str, int b, narrow l, narrow u) \
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68 | { return xstrto##W##_range(str, b, l, u); } \
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69 | static ALWAYS_INLINE \
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70 | narrow xstrto##N(const char *str, int b) \
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71 | { return xstrto##W(str, b); } \
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72 | static ALWAYS_INLINE \
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73 | narrow xato##N##_range_sfx(const char *str, narrow l, narrow u, const struct suffix_mult *sfx) \
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74 | { return xato##W##_range_sfx(str, l, u, sfx); } \
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75 | static ALWAYS_INLINE \
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76 | narrow xato##N##_range(const char *str, narrow l, narrow u) \
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77 | { return xato##W##_range(str, l, u); } \
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78 | static ALWAYS_INLINE \
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79 | narrow xato##N##_sfx(const char *str, const struct suffix_mult *sfx) \
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80 | { return xato##W##_sfx(str, sfx); } \
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81 | static ALWAYS_INLINE \
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82 | narrow xato##N(const char *str) \
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83 | { return xato##W(str); } \
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84 |
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85 | /* If long == long long, then just map them one-to-one */
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86 | #if ULONG_MAX == ULLONG_MAX
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87 | DEFINE_EQUIV_STR_CONV(long, l, ll, ul, ull)
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88 | #else
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89 | /* Else provide extern defs */
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90 | DECLARE_STR_CONV(long, l, ul)
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91 | #endif
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92 |
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93 | /* Same for int -> [long] long */
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94 | #if UINT_MAX == ULLONG_MAX
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95 | DEFINE_EQUIV_STR_CONV(int, i, ll, u, ull)
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96 | #elif UINT_MAX == ULONG_MAX
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97 | DEFINE_EQUIV_STR_CONV(int, i, l, u, ul)
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98 | #else
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99 | DECLARE_STR_CONV(int, i, u)
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100 | #endif
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101 |
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102 | /* Specialized */
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103 |
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104 | uint32_t BUG_xatou32_unimplemented(void);
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105 | static ALWAYS_INLINE uint32_t xatou32(const char *numstr)
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106 | {
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107 | if (UINT_MAX == 0xffffffff)
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108 | return xatou(numstr);
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109 | if (ULONG_MAX == 0xffffffff)
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110 | return xatoul(numstr);
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111 | return BUG_xatou32_unimplemented();
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112 | }
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113 |
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114 | /* Non-aborting kind of convertors: bb_strto[u][l]l */
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115 |
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116 | /* On exit: errno = 0 only if there was non-empty, '\0' terminated value
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117 | * errno = EINVAL if value was not '\0' terminated, but otherwise ok
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118 | * Return value is still valid, caller should just check whether end[0]
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119 | * is a valid terminating char for particular case. OTOH, if caller
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120 | * requires '\0' terminated input, [s]he can just check errno == 0.
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121 | * errno = ERANGE if value had alphanumeric terminating char ("1234abcg").
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122 | * errno = ERANGE if value is out of range, missing, etc.
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123 | * errno = ERANGE if value had minus sign for strtouXX (even "-0" is not ok )
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124 | * return value is all-ones in this case.
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125 | */
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126 |
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127 | unsigned long long bb_strtoull(const char *arg, char **endp, int base) FAST_FUNC;
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128 | long long bb_strtoll(const char *arg, char **endp, int base) FAST_FUNC;
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129 |
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130 | #if ULONG_MAX == ULLONG_MAX
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131 | static ALWAYS_INLINE
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132 | unsigned long bb_strtoul(const char *arg, char **endp, int base)
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133 | { return bb_strtoull(arg, endp, base); }
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134 | static ALWAYS_INLINE
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135 | long bb_strtol(const char *arg, char **endp, int base)
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136 | { return bb_strtoll(arg, endp, base); }
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137 | #else
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138 | unsigned long bb_strtoul(const char *arg, char **endp, int base) FAST_FUNC;
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139 | long bb_strtol(const char *arg, char **endp, int base) FAST_FUNC;
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140 | #endif
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141 |
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142 | #if UINT_MAX == ULLONG_MAX
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143 | static ALWAYS_INLINE
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144 | unsigned bb_strtou(const char *arg, char **endp, int base)
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145 | { return bb_strtoull(arg, endp, base); }
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146 | static ALWAYS_INLINE
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147 | int bb_strtoi(const char *arg, char **endp, int base)
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148 | { return bb_strtoll(arg, endp, base); }
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149 | #elif UINT_MAX == ULONG_MAX
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150 | static ALWAYS_INLINE
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151 | unsigned bb_strtou(const char *arg, char **endp, int base)
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152 | { return bb_strtoul(arg, endp, base); }
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153 | static ALWAYS_INLINE
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154 | int bb_strtoi(const char *arg, char **endp, int base)
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155 | { return bb_strtol(arg, endp, base); }
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156 | #else
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157 | unsigned bb_strtou(const char *arg, char **endp, int base) FAST_FUNC;
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158 | int bb_strtoi(const char *arg, char **endp, int base) FAST_FUNC;
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159 | #endif
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160 |
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161 | uint32_t BUG_bb_strtou32_unimplemented(void);
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162 | static ALWAYS_INLINE
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163 | uint32_t bb_strtou32(const char *arg, char **endp, int base)
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164 | {
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165 | if (sizeof(uint32_t) == sizeof(unsigned))
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166 | return bb_strtou(arg, endp, base);
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167 | if (sizeof(uint32_t) == sizeof(unsigned long))
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168 | return bb_strtoul(arg, endp, base);
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169 | return BUG_bb_strtou32_unimplemented();
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170 | }
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171 |
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172 | /* Floating point */
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173 |
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174 | double bb_strtod(const char *arg, char **endp) FAST_FUNC;
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175 |
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176 | POP_SAVED_FUNCTION_VISIBILITY
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