bigbiff | 7b4c7a6 | 2015-01-01 19:44:14 -0500 | [diff] [blame^] | 1 | #ifndef UTIL_LINUX_STRUTILS |
| 2 | #define UTIL_LINUX_STRUTILS |
| 3 | |
| 4 | #include <stdlib.h> |
| 5 | #include <inttypes.h> |
| 6 | #include <string.h> |
| 7 | #include <sys/types.h> |
| 8 | #include <ctype.h> |
| 9 | |
| 10 | /* default strtoxx_or_err() exit code */ |
| 11 | #ifndef STRTOXX_EXIT_CODE |
| 12 | # define STRTOXX_EXIT_CODE EXIT_FAILURE |
| 13 | #endif |
| 14 | |
| 15 | |
| 16 | extern int parse_size(const char *str, uintmax_t *res, int *power); |
| 17 | extern int strtosize(const char *str, uintmax_t *res); |
| 18 | extern uintmax_t strtosize_or_err(const char *str, const char *errmesg); |
| 19 | |
| 20 | extern int16_t strtos16_or_err(const char *str, const char *errmesg); |
| 21 | extern uint16_t strtou16_or_err(const char *str, const char *errmesg); |
| 22 | |
| 23 | extern int32_t strtos32_or_err(const char *str, const char *errmesg); |
| 24 | extern uint32_t strtou32_or_err(const char *str, const char *errmesg); |
| 25 | |
| 26 | extern int64_t strtos64_or_err(const char *str, const char *errmesg); |
| 27 | extern uint64_t strtou64_or_err(const char *str, const char *errmesg); |
| 28 | |
| 29 | extern double strtod_or_err(const char *str, const char *errmesg); |
| 30 | |
| 31 | extern long strtol_or_err(const char *str, const char *errmesg); |
| 32 | extern unsigned long strtoul_or_err(const char *str, const char *errmesg); |
| 33 | |
| 34 | extern void strtotimeval_or_err(const char *str, struct timeval *tv, |
| 35 | const char *errmesg); |
| 36 | |
| 37 | extern int isdigit_string(const char *str); |
| 38 | |
| 39 | #ifndef HAVE_MEMPCPY |
| 40 | extern void *mempcpy(void *restrict dest, const void *restrict src, size_t n); |
| 41 | #endif |
| 42 | #ifndef HAVE_STRNLEN |
| 43 | extern size_t strnlen(const char *s, size_t maxlen); |
| 44 | #endif |
| 45 | #ifndef HAVE_STRNDUP |
| 46 | extern char *strndup(const char *s, size_t n); |
| 47 | #endif |
| 48 | #ifndef HAVE_STRNCHR |
| 49 | extern char *strnchr(const char *s, size_t maxlen, int c); |
| 50 | #endif |
| 51 | |
| 52 | /* caller guarantees n > 0 */ |
| 53 | static inline void xstrncpy(char *dest, const char *src, size_t n) |
| 54 | { |
| 55 | strncpy(dest, src, n-1); |
| 56 | dest[n-1] = 0; |
| 57 | } |
| 58 | |
| 59 | static inline char *strdup_to_offset(void *stru, size_t offset, const char *str) |
| 60 | { |
| 61 | char *n = NULL; |
| 62 | char **o = (char **) ((char *) stru + offset); |
| 63 | |
| 64 | if (str) { |
| 65 | n = strdup(str); |
| 66 | if (!n) |
| 67 | return NULL; |
| 68 | } |
| 69 | |
| 70 | free(*o); |
| 71 | *o = n; |
| 72 | return n; |
| 73 | } |
| 74 | |
| 75 | #define strdup_to_struct_member(_s, _m, _str) \ |
| 76 | strdup_to_offset((void *) _s, offsetof(__typeof__(*(_s)), _m), _str) |
| 77 | |
| 78 | extern void strmode(mode_t mode, char *str); |
| 79 | |
| 80 | /* Options for size_to_human_string() */ |
| 81 | enum |
| 82 | { |
| 83 | SIZE_SUFFIX_1LETTER = 0, |
| 84 | SIZE_SUFFIX_3LETTER = 1, |
| 85 | SIZE_SUFFIX_SPACE = 2 |
| 86 | }; |
| 87 | |
| 88 | extern char *size_to_human_string(int options, uint64_t bytes); |
| 89 | |
| 90 | extern int string_to_idarray(const char *list, int ary[], size_t arysz, |
| 91 | int (name2id)(const char *, size_t)); |
| 92 | extern int string_add_to_idarray(const char *list, int ary[], |
| 93 | size_t arysz, int *ary_pos, |
| 94 | int (name2id)(const char *, size_t)); |
| 95 | |
| 96 | extern int string_to_bitarray(const char *list, char *ary, |
| 97 | int (*name2bit)(const char *, size_t)); |
| 98 | |
| 99 | extern int string_to_bitmask(const char *list, |
| 100 | unsigned long *mask, |
| 101 | long (*name2flag)(const char *, size_t)); |
| 102 | extern int parse_range(const char *str, int *lower, int *upper, int def); |
| 103 | |
| 104 | extern int streq_except_trailing_slash(const char *s1, const char *s2); |
| 105 | |
| 106 | /* |
| 107 | * Match string beginning. |
| 108 | */ |
| 109 | static inline const char *startswith(const char *s, const char *prefix) |
| 110 | { |
| 111 | size_t sz = prefix ? strlen(prefix) : 0; |
| 112 | |
| 113 | if (s && sz && strncmp(s, prefix, sz) == 0) |
| 114 | return s + sz; |
| 115 | return NULL; |
| 116 | } |
| 117 | |
| 118 | /* |
| 119 | * Case insensitive match string beginning. |
| 120 | */ |
| 121 | static inline const char *startswith_no_case(const char *s, const char *prefix) |
| 122 | { |
| 123 | size_t sz = prefix ? strlen(prefix) : 0; |
| 124 | |
| 125 | if (s && sz && strncasecmp(s, prefix, sz) == 0) |
| 126 | return s + sz; |
| 127 | return NULL; |
| 128 | } |
| 129 | |
| 130 | /* |
| 131 | * Match string ending. |
| 132 | */ |
| 133 | static inline const char *endswith(const char *s, const char *postfix) |
| 134 | { |
| 135 | size_t sl = s ? strlen(s) : 0; |
| 136 | size_t pl = postfix ? strlen(postfix) : 0; |
| 137 | |
| 138 | if (pl == 0) |
| 139 | return (char *)s + sl; |
| 140 | if (sl < pl) |
| 141 | return NULL; |
| 142 | if (memcmp(s + sl - pl, postfix, pl) != 0) |
| 143 | return NULL; |
| 144 | return (char *)s + sl - pl; |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Skip leading white space. |
| 149 | */ |
| 150 | static inline const char *skip_space(const char *p) |
| 151 | { |
| 152 | while (isspace(*p)) |
| 153 | ++p; |
| 154 | return p; |
| 155 | } |
| 156 | |
| 157 | static inline const char *skip_blank(const char *p) |
| 158 | { |
| 159 | while (isblank(*p)) |
| 160 | ++p; |
| 161 | return p; |
| 162 | } |
| 163 | |
| 164 | |
| 165 | /* Removes whitespace from the right-hand side of a string (trailing |
| 166 | * whitespace). |
| 167 | * |
| 168 | * Returns size of the new string (without \0). |
| 169 | */ |
| 170 | static inline size_t rtrim_whitespace(unsigned char *str) |
| 171 | { |
| 172 | size_t i = strlen((char *) str); |
| 173 | |
| 174 | while (i) { |
| 175 | i--; |
| 176 | if (!isspace(str[i])) { |
| 177 | i++; |
| 178 | break; |
| 179 | } |
| 180 | } |
| 181 | str[i] = '\0'; |
| 182 | return i; |
| 183 | } |
| 184 | |
| 185 | /* Removes whitespace from the left-hand side of a string. |
| 186 | * |
| 187 | * Returns size of the new string (without \0). |
| 188 | */ |
| 189 | static inline size_t ltrim_whitespace(unsigned char *str) |
| 190 | { |
| 191 | size_t len; |
| 192 | unsigned char *p; |
| 193 | |
| 194 | for (p = str; p && isspace(*p); p++); |
| 195 | |
| 196 | len = strlen((char *) p); |
| 197 | |
| 198 | if (len && p > str) |
| 199 | memmove(str, p, len + 1); |
| 200 | |
| 201 | return len; |
| 202 | } |
| 203 | |
| 204 | #endif |