diff options
Diffstat (limited to 'diffcore-pickaxe.c')
| -rw-r--r-- | diffcore-pickaxe.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/diffcore-pickaxe.c b/diffcore-pickaxe.c index 4c26b422f9..50e46ab863 100644 --- a/diffcore-pickaxe.c +++ b/diffcore-pickaxe.c @@ -5,19 +5,30 @@ #include "diff.h" #include "diffcore.h" -static int contains(struct diff_filespec *one, - const char *needle, unsigned long len) +static unsigned int contains(struct diff_filespec *one, + const char *needle, unsigned long len) { + unsigned int cnt; unsigned long offset, sz; const char *data; if (diff_populate_filespec(one, 0)) return 0; + sz = one->size; data = one->data; - for (offset = 0; offset + len <= sz; offset++) - if (!strncmp(needle, data + offset, len)) - return 1; - return 0; + cnt = 0; + + /* Yes, I've heard of strstr(), but the thing is *data may + * not be NUL terminated. Sue me. + */ + for (offset = 0; offset + len <= sz; offset++) { + /* we count non-overlapping occurrences of needle */ + if (!memcmp(needle, data + offset, len)) { + offset += len - 1; + cnt++; + } + } + return cnt; } void diffcore_pickaxe(const char *needle, int opts) |