| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #ifndef UTIL_XSTRING_H | ||
| 2 | #define UTIL_XSTRING_H | ||
| 3 | |||
| 4 | #include <stdbool.h> | ||
| 5 | #include <string.h> | ||
| 6 | #include "ascii.h" | ||
| 7 | #include "debug.h" | ||
| 8 | #include "macros.h" | ||
| 9 | |||
| 10 | // Return true if null-terminated strings a and b are identical | ||
| 11 | NONNULL_ARGS | ||
| 12 | 72393 | static inline bool streq(const char *a, const char *b) | |
| 13 | { | ||
| 14 | 72393 | return strcmp(a, b) == 0; | |
| 15 | } | ||
| 16 | |||
| 17 | // Like streq(), but allowing one or both parameters to be NULL | ||
| 18 | 1972 | static inline bool xstreq(const char *a, const char *b) | |
| 19 | { | ||
| 20 |
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1972 | return (a == b) || (a && b && streq(a, b)); |
| 21 | } | ||
| 22 | |||
| 23 | // Like strrchr(3), but for use when `ch` is known to be present in | ||
| 24 | // `str` (e.g. when searching for '/' in absolute filenames) | ||
| 25 | NONNULL_ARGS_AND_RETURN | ||
| 26 | 7 | static inline const char *xstrrchr(const char *str, int ch) | |
| 27 | { | ||
| 28 | 7 | const char *ptr = strrchr(str, ch); | |
| 29 | 7 | BUG_ON(!ptr); | |
| 30 | 7 | return ptr; | |
| 31 | } | ||
| 32 | |||
| 33 | // See: https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3322.pdf | ||
| 34 | 46851 | static inline bool mem_equal(const void *s1, const void *s2, size_t n) | |
| 35 | { | ||
| 36 | 46851 | BUG_ON(n && (!s1 || !s2)); | |
| 37 |
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46748 | return n == 0 || memcmp(s1, s2, n) == 0; |
| 38 | } | ||
| 39 | |||
| 40 | // Portable version of glibc/FreeBSD mempcpy(3) | ||
| 41 | NONNULL_ARGS_AND_RETURN | ||
| 42 | 4830 | static inline void *xmempcpy(void *restrict dest, const void *restrict src, size_t n) | |
| 43 | { | ||
| 44 | 4830 | memcpy(dest, src, n); | |
| 45 | 4830 | return (char*)dest + n; | |
| 46 | } | ||
| 47 | |||
| 48 | NONNULL_ARGS_AND_RETURN | ||
| 49 | 2036 | static inline void *xmempcpy2 ( | |
| 50 | void *dest, | ||
| 51 | const void *p1, size_t n1, | ||
| 52 | const void *p2, size_t n2 | ||
| 53 | ) { | ||
| 54 | 2036 | return xmempcpy(xmempcpy(dest, p1, n1), p2, n2); | |
| 55 | } | ||
| 56 | |||
| 57 | NONNULL_ARGS_AND_RETURN | ||
| 58 | 212 | static inline void *xmempcpy3 ( // NOLINT(readability-function-size) | |
| 59 | void *dest, | ||
| 60 | const void *p1, size_t n1, | ||
| 61 | const void *p2, size_t n2, | ||
| 62 | const void *p3, size_t n3 | ||
| 63 | ) { | ||
| 64 | 212 | return xmempcpy(xmempcpy2(dest, p1, n1, p2, n2), p3, n3); | |
| 65 | } | ||
| 66 | |||
| 67 | NONNULL_ARGS_AND_RETURN | ||
| 68 | 117 | static inline void *xmempcpy4 ( // NOLINT(readability-function-size) | |
| 69 | void *dest, | ||
| 70 | const void *p1, size_t n1, | ||
| 71 | const void *p2, size_t n2, | ||
| 72 | const void *p3, size_t n3, | ||
| 73 | const void *p4, size_t n4 | ||
| 74 | ) { | ||
| 75 | 117 | return xmempcpy(xmempcpy3(dest, p1, n1, p2, n2, p3, n3), p4, n4); | |
| 76 | } | ||
| 77 | |||
| 78 | 64 | static inline bool mem_equal_icase(const void *p1, const void *p2, size_t n) | |
| 79 | { | ||
| 80 |
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64 | if (n == 0) { |
| 81 | return true; | ||
| 82 | } | ||
| 83 | |||
| 84 | 60 | const unsigned char *s1 = p1; | |
| 85 | 60 | const unsigned char *s2 = p2; | |
| 86 | 60 | BUG_ON(!s1 || !s2); | |
| 87 | |||
| 88 |
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231 | while (n--) { |
| 89 |
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207 | if (ascii_tolower(*s1++) != ascii_tolower(*s2++)) { |
| 90 | return false; | ||
| 91 | } | ||
| 92 | } | ||
| 93 | |||
| 94 | return true; | ||
| 95 | } | ||
| 96 | |||
| 97 | #endif | ||
| 98 |