| Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1 | #include <string.h> |
| Hitoshi Mitake | d2fb8b4 | 2009-11-15 20:36:53 +0900 | [diff] [blame] | 2 | #include <stdlib.h> |
| Arnaldo Carvalho de Melo | ea5cc87 | 2009-06-01 22:31:03 -0300 | [diff] [blame] | 3 | #include "string.h" |
| Hitoshi Mitake | d2fb8b4 | 2009-11-15 20:36:53 +0900 | [diff] [blame] | 4 | #include "util.h" |
| Arnaldo Carvalho de Melo | ea5cc87 | 2009-06-01 22:31:03 -0300 | [diff] [blame] | 5 | |
| 6 | static int hex(char ch) |
| 7 | { |
| 8 | if ((ch >= '0') && (ch <= '9')) |
| 9 | return ch - '0'; |
| 10 | if ((ch >= 'a') && (ch <= 'f')) |
| 11 | return ch - 'a' + 10; |
| 12 | if ((ch >= 'A') && (ch <= 'F')) |
| 13 | return ch - 'A' + 10; |
| 14 | return -1; |
| 15 | } |
| 16 | |
| 17 | /* |
| 18 | * While we find nice hex chars, build a long_val. |
| 19 | * Return number of chars processed. |
| 20 | */ |
| Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 21 | int hex2u64(const char *ptr, u64 *long_val) |
| Arnaldo Carvalho de Melo | ea5cc87 | 2009-06-01 22:31:03 -0300 | [diff] [blame] | 22 | { |
| 23 | const char *p = ptr; |
| 24 | *long_val = 0; |
| 25 | |
| 26 | while (*p) { |
| 27 | const int hex_val = hex(*p); |
| 28 | |
| 29 | if (hex_val < 0) |
| 30 | break; |
| 31 | |
| 32 | *long_val = (*long_val << 4) | hex_val; |
| 33 | p++; |
| 34 | } |
| 35 | |
| 36 | return p - ptr; |
| 37 | } |
| Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 38 | |
| 39 | char *strxfrchar(char *s, char from, char to) |
| 40 | { |
| 41 | char *p = s; |
| 42 | |
| 43 | while ((p = strchr(p, from)) != NULL) |
| 44 | *p++ = to; |
| 45 | |
| 46 | return s; |
| 47 | } |
| Hitoshi Mitake | d2fb8b4 | 2009-11-15 20:36:53 +0900 | [diff] [blame] | 48 | |
| 49 | #define K 1024LL |
| 50 | /* |
| 51 | * perf_atoll() |
| 52 | * Parse (\d+)(b|B|kb|KB|mb|MB|gb|GB|tb|TB) (e.g. "256MB") |
| 53 | * and return its numeric value |
| 54 | */ |
| 55 | s64 perf_atoll(const char *str) |
| 56 | { |
| 57 | unsigned int i; |
| 58 | s64 length = -1, unit = 1; |
| 59 | |
| 60 | if (!isdigit(str[0])) |
| 61 | goto out_err; |
| 62 | |
| 63 | for (i = 1; i < strlen(str); i++) { |
| 64 | switch (str[i]) { |
| 65 | case 'B': |
| 66 | case 'b': |
| 67 | break; |
| 68 | case 'K': |
| 69 | if (str[i + 1] != 'B') |
| 70 | goto out_err; |
| 71 | else |
| 72 | goto kilo; |
| 73 | case 'k': |
| 74 | if (str[i + 1] != 'b') |
| 75 | goto out_err; |
| 76 | kilo: |
| 77 | unit = K; |
| 78 | break; |
| 79 | case 'M': |
| 80 | if (str[i + 1] != 'B') |
| 81 | goto out_err; |
| 82 | else |
| 83 | goto mega; |
| 84 | case 'm': |
| 85 | if (str[i + 1] != 'b') |
| 86 | goto out_err; |
| 87 | mega: |
| 88 | unit = K * K; |
| 89 | break; |
| 90 | case 'G': |
| 91 | if (str[i + 1] != 'B') |
| 92 | goto out_err; |
| 93 | else |
| 94 | goto giga; |
| 95 | case 'g': |
| 96 | if (str[i + 1] != 'b') |
| 97 | goto out_err; |
| 98 | giga: |
| 99 | unit = K * K * K; |
| 100 | break; |
| 101 | case 'T': |
| 102 | if (str[i + 1] != 'B') |
| 103 | goto out_err; |
| 104 | else |
| 105 | goto tera; |
| 106 | case 't': |
| 107 | if (str[i + 1] != 'b') |
| 108 | goto out_err; |
| 109 | tera: |
| 110 | unit = K * K * K * K; |
| 111 | break; |
| 112 | case '\0': /* only specified figures */ |
| 113 | unit = 1; |
| 114 | break; |
| 115 | default: |
| 116 | if (!isdigit(str[i])) |
| 117 | goto out_err; |
| 118 | break; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | length = atoll(str) * unit; |
| 123 | goto out; |
| 124 | |
| 125 | out_err: |
| 126 | length = -1; |
| 127 | out: |
| 128 | return length; |
| 129 | } |