diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/utils.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c index 4378431b..c3e3efbf 100644 --- a/src/utils.c +++ b/src/utils.c @@ -525,6 +525,28 @@ size_t osmo_strlcpy(char *dst, const char *src, size_t siz) return ret; } +/*! Find first occurence of a char in a size limited string. + * Like strchr() but with a buffer size limit. + * \param[in] str String buffer to examine. + * \param[in] str_size sizeof(str). + * \param[in] c Character to look for. + * \return Pointer to the matched char, or NULL if not found. + */ +const char *osmo_strnchr(const char *str, size_t str_size, char c) +{ + const char *end = str + str_size; + const char *pos; + if (!str) + return NULL; + for (pos = str; pos < end; pos++) { + if (c == *pos) + return pos; + if (!*pos) + return NULL; + } + return NULL; +} + /*! Validate that a given string is a hex string within given size limits. * Note that each hex digit amounts to a nibble, so if checking for a hex * string to result in N bytes, pass amount of digits as 2*N. |