diff options
Diffstat (limited to 'src/buffer.c')
-rw-r--r-- | src/buffer.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/buffer.c b/src/buffer.c index 2ecb088f8..8687d5537 100644 --- a/src/buffer.c +++ b/src/buffer.c @@ -415,3 +415,30 @@ int git_buf_cmp(const git_buf *a, const git_buf *b) return (result != 0) ? result : (a->size < b->size) ? -1 : (a->size > b->size) ? 1 : 0; } + +int git_buf_common_prefix(git_buf *buf, const git_strarray *strings) +{ + size_t i; + const char *str, *pfx; + + git_buf_clear(buf); + + if (!strings || !strings->count) + return 0; + + if (git_buf_sets(buf, strings->strings[0]) < 0) + return -1; + + for (i = 1; i < strings->count; ++i) { + for (str = strings->strings[i], pfx = buf->ptr; + *str && *str == *pfx; str++, pfx++) + /* scanning */; + + git_buf_truncate(buf, pfx - buf->ptr); + + if (!buf->size) + break; + } + + return 0; +} |