diff options
Diffstat (limited to 'xdiff')
| -rw-r--r-- | xdiff/xutils.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/xdiff/xutils.c b/xdiff/xutils.c index 3653864..bf91c0f 100644 --- a/xdiff/xutils.c +++ b/xdiff/xutils.c @@ -236,12 +236,13 @@ int xdl_recmatch(const char *l1, long s1, const char *l2, long s2, long flags) return 0; } -unsigned long xdl_hash_record(char const **data, char const *top, long flags) { +static unsigned long xdl_hash_record_with_whitespace(char const **data, + char const *top, long flags) { unsigned long ha = 5381; char const *ptr = *data; for (; ptr < top && *ptr != '\n'; ptr++) { - if (isspace(*ptr) && (flags & XDF_WHITESPACE_FLAGS)) { + if (isspace(*ptr)) { const char *ptr2 = ptr; while (ptr + 1 < top && isspace(ptr[1]) && ptr[1] != '\n') @@ -270,6 +271,23 @@ unsigned long xdl_hash_record(char const **data, char const *top, long flags) { } +unsigned long xdl_hash_record(char const **data, char const *top, long flags) { + unsigned long ha = 5381; + char const *ptr = *data; + + if (flags & XDF_WHITESPACE_FLAGS) + return xdl_hash_record_with_whitespace(data, top, flags); + + for (; ptr < top && *ptr != '\n'; ptr++) { + ha += (ha << 5); + ha ^= (unsigned long) *ptr; + } + *data = ptr < top ? ptr + 1: ptr; + + return ha; +} + + unsigned int xdl_hashbits(unsigned int size) { unsigned int val = 1, bits = 0; |