/* what is the common non-wildcard prefix for all items in the pathspec */
char *git_pathspec_prefix(const git_strarray *pathspec)
{
git_buf prefix = GIT_BUF_INIT;
const char *scan;
if (!pathspec || !pathspec->count ||
git_buf_text_common_prefix(&prefix, pathspec) < 0)
return NULL;
/* diff prefix will only be leading non-wildcards */
for (scan = prefix.ptr; *scan; ++scan) {
if (git__iswildcard(*scan) &&
(scan == prefix.ptr || (*(scan - 1) != '\\')))
break;
}
git_buf_truncate(&prefix, scan - prefix.ptr);
if (prefix.size <= 0) {
git_buf_free(&prefix);
return NULL;
}
git_buf_text_unescape(&prefix);
return git_buf_detach(&prefix);
}
void test_core_buffer__11(void)
{
git_buf a = GIT_BUF_INIT;
git_strarray t;
char *t1[] = { "nothing", "in", "common" };
char *t2[] = { "something", "something else", "some other" };
char *t3[] = { "something", "some fun", "no fun" };
char *t4[] = { "happy", "happier", "happiest" };
char *t5[] = { "happiest", "happier", "happy" };
char *t6[] = { "no", "nope", "" };
char *t7[] = { "", "doesn't matter" };
t.strings = t1;
t.count = 3;
cl_git_pass(git_buf_text_common_prefix(&a, &t));
cl_assert_equal_s(a.ptr, "");
t.strings = t2;
t.count = 3;
cl_git_pass(git_buf_text_common_prefix(&a, &t));
cl_assert_equal_s(a.ptr, "some");
t.strings = t3;
t.count = 3;
cl_git_pass(git_buf_text_common_prefix(&a, &t));
cl_assert_equal_s(a.ptr, "");
t.strings = t4;
t.count = 3;
cl_git_pass(git_buf_text_common_prefix(&a, &t));
cl_assert_equal_s(a.ptr, "happ");
t.strings = t5;
t.count = 3;
cl_git_pass(git_buf_text_common_prefix(&a, &t));
cl_assert_equal_s(a.ptr, "happ");
t.strings = t6;
t.count = 3;
cl_git_pass(git_buf_text_common_prefix(&a, &t));
cl_assert_equal_s(a.ptr, "");
t.strings = t7;
t.count = 3;
cl_git_pass(git_buf_text_common_prefix(&a, &t));
cl_assert_equal_s(a.ptr, "");
git_buf_free(&a);
}