projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| e4c5383e SS |
1 | /* |
| 2 | * linux/lib/vsprintf.c | |
| 3 | * | |
| 4 | * Copyright (C) 1991, 1992 Linus Torvalds | |
| 5 | */ | |
| 6 | ||
| 7 | /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */ | |
| 8 | /* | |
| 9 | * Wirzenius wrote this portably, Torvalds fucked it up :-) | |
| 10 | */ | |
| 11 | ||
| 12 | #include <common.h> | |
| 13 | #include <errno.h> | |
| 14 | #include <linux/ctype.h> | |
| 15 | ||
| 2e794614 RC |
16 | /* from lib/kstrtox.c */ |
| 17 | static const char *_parse_integer_fixup_radix(const char *s, unsigned int *base) | |
| 18 | { | |
| 19 | if (*base == 0) { | |
| 20 | if (s[0] == '0') { | |
| 21 | if (tolower(s[1]) == 'x' && isxdigit(s[2])) | |
| 22 | *base = 16; | |
| 23 | else | |
| 24 | *base = 8; | |
| 25 | } else | |
| 26 | *base = 10; | |
| 27 | } | |
| 28 | if (*base == 16 && s[0] == '0' && tolower(s[1]) == 'x') | |
| 29 | s += 2; | |
| 30 | return s; | |
| 31 | } | |
| 32 | ||
| e4c5383e SS |
33 | unsigned long simple_strtoul(const char *cp, char **endp, |
| 34 | unsigned int base) | |
| 35 | { | |
| 36 | unsigned long result = 0; | |
| 37 | unsigned long value; | |
| 38 | ||
| 2e794614 | 39 | cp = _parse_integer_fixup_radix(cp, &base); |
| e4c5383e SS |
40 | |
| 41 | while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp) | |
| 42 | ? toupper(*cp) : *cp)-'A'+10) < base) { | |
| 43 | result = result*base + value; | |
| 44 | cp++; | |
| 45 | } | |
| 46 | ||
| 47 | if (endp) | |
| 48 | *endp = (char *)cp; | |
| 49 | ||
| 50 | return result; | |
| 51 | } | |
| 52 | ||
| 53 | int strict_strtoul(const char *cp, unsigned int base, unsigned long *res) | |
| 54 | { | |
| 55 | char *tail; | |
| 56 | unsigned long val; | |
| 57 | size_t len; | |
| 58 | ||
| 59 | *res = 0; | |
| 60 | len = strlen(cp); | |
| 61 | if (len == 0) | |
| 62 | return -EINVAL; | |
| 63 | ||
| 64 | val = simple_strtoul(cp, &tail, base); | |
| 65 | if (tail == cp) | |
| 66 | return -EINVAL; | |
| 67 | ||
| 68 | if ((*tail == '\0') || | |
| 69 | ((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) { | |
| 70 | *res = val; | |
| 71 | return 0; | |
| 72 | } | |
| 73 | ||
| 74 | return -EINVAL; | |
| 75 | } | |
| 76 | ||
| 77 | long simple_strtol(const char *cp, char **endp, unsigned int base) | |
| 78 | { | |
| 79 | if (*cp == '-') | |
| 80 | return -simple_strtoul(cp + 1, endp, base); | |
| 81 | ||
| 82 | return simple_strtoul(cp, endp, base); | |
| 83 | } | |
| 84 | ||
| 85 | unsigned long ustrtoul(const char *cp, char **endp, unsigned int base) | |
| 86 | { | |
| 87 | unsigned long result = simple_strtoul(cp, endp, base); | |
| a353e6aa MR |
88 | switch (tolower(**endp)) { |
| 89 | case 'g': | |
| e4c5383e SS |
90 | result *= 1024; |
| 91 | /* fall through */ | |
| a353e6aa | 92 | case 'm': |
| e4c5383e SS |
93 | result *= 1024; |
| 94 | /* fall through */ | |
| e4c5383e SS |
95 | case 'k': |
| 96 | result *= 1024; | |
| b87b0d8d MR |
97 | (*endp)++; |
| 98 | if (**endp == 'i') | |
| 99 | (*endp)++; | |
| 100 | if (**endp == 'B') | |
| 101 | (*endp)++; | |
| e4c5383e SS |
102 | } |
| 103 | return result; | |
| 104 | } | |
| 105 | ||
| 106 | unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base) | |
| 107 | { | |
| 108 | unsigned long long result = simple_strtoull(cp, endp, base); | |
| a353e6aa MR |
109 | switch (tolower(**endp)) { |
| 110 | case 'g': | |
| e4c5383e SS |
111 | result *= 1024; |
| 112 | /* fall through */ | |
| a353e6aa | 113 | case 'm': |
| e4c5383e SS |
114 | result *= 1024; |
| 115 | /* fall through */ | |
| e4c5383e SS |
116 | case 'k': |
| 117 | result *= 1024; | |
| b87b0d8d MR |
118 | (*endp)++; |
| 119 | if (**endp == 'i') | |
| 120 | (*endp)++; | |
| 121 | if (**endp == 'B') | |
| 122 | (*endp)++; | |
| e4c5383e SS |
123 | } |
| 124 | return result; | |
| 125 | } | |
| 126 | ||
| 127 | unsigned long long simple_strtoull(const char *cp, char **endp, | |
| 128 | unsigned int base) | |
| 129 | { | |
| 130 | unsigned long long result = 0, value; | |
| 131 | ||
| 2e794614 | 132 | cp = _parse_integer_fixup_radix(cp, &base); |
| e4c5383e SS |
133 | |
| 134 | while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp - '0' | |
| 135 | : (islower(*cp) ? toupper(*cp) : *cp) - 'A' + 10) < base) { | |
| 136 | result = result * base + value; | |
| 137 | cp++; | |
| 138 | } | |
| 139 | ||
| 140 | if (endp) | |
| 141 | *endp = (char *) cp; | |
| 142 | ||
| 143 | return result; | |
| 144 | } | |
| 145 | ||
| 146 | long trailing_strtoln(const char *str, const char *end) | |
| 147 | { | |
| 148 | const char *p; | |
| 149 | ||
| 150 | if (!end) | |
| 151 | end = str + strlen(str); | |
| b91c6a12 SG |
152 | if (isdigit(end[-1])) { |
| 153 | for (p = end - 1; p > str; p--) { | |
| 154 | if (!isdigit(*p)) | |
| 155 | return simple_strtoul(p + 1, NULL, 10); | |
| 156 | } | |
| e4c5383e SS |
157 | } |
| 158 | ||
| 159 | return -1; | |
| 160 | } | |
| 161 | ||
| 162 | long trailing_strtol(const char *str) | |
| 163 | { | |
| 164 | return trailing_strtoln(str, NULL); | |
| 165 | } |