diff options
Diffstat (limited to 'lib/string.c')
| -rw-r--r-- | lib/string.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/string.c b/lib/string.c index e94021c468..c4ca944bb4 100644 --- a/lib/string.c +++ b/lib/string.c @@ -230,6 +230,14 @@ char * strchr(const char * s, int c) } #endif +const char *strchrnul(const char *s, int c) +{ + for (; *s != (char)c; ++s) + if (*s == '\0') + break; + return s; +} + #ifndef __HAVE_ARCH_STRRCHR /** * strrchr - Find the last occurrence of a character in a string @@ -278,6 +286,30 @@ size_t strnlen(const char * s, size_t count) } #endif +#ifndef __HAVE_ARCH_STRCSPN +/** + * strcspn - Calculate the length of the initial substring of @s which does + * not contain letters in @reject + * @s: The string to be searched + * @reject: The string to avoid + */ +size_t strcspn(const char *s, const char *reject) +{ + const char *p; + const char *r; + size_t count = 0; + + for (p = s; *p != '\0'; ++p) { + for (r = reject; *r != '\0'; ++r) { + if (*p == *r) + return count; + } + ++count; + } + return count; +} +#endif + #ifndef __HAVE_ARCH_STRDUP char * strdup(const char *s) { |