diff options
| -rw-r--r-- | git-compat-util.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index 061e33c774..8e808c01d2 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -464,6 +464,23 @@ static inline int skip_prefix(const char *str, const char *prefix, } /* + * Like skip_prefix, but promises never to read past "len" bytes of the input + * buffer, and returns the remaining number of bytes in "out" via "outlen". + */ +static inline int skip_prefix_mem(const char *buf, size_t len, + const char *prefix, + const char **out, size_t *outlen) +{ + size_t prefix_len = strlen(prefix); + if (prefix_len <= len && !memcmp(buf, prefix, prefix_len)) { + *out = buf + prefix_len; + *outlen = len - prefix_len; + return 1; + } + return 0; +} + +/* * If buf ends with suffix, return 1 and subtract the length of the suffix * from *len. Otherwise, return 0 and leave *len untouched. */ |