/**
* ggit_patch_new_from_blobs:
* @old_blob: (allow-none): a #GgitBlob to diff from.
* @old_as_path: (allow-none): treat @old_blob as if it had this filename, or %NULL,
* @new_blob: (allow-none): a #GgitBlob to diff to.
* @new_as_path: (allow-none): treat @new_blob as if it had this filename, or %NULL,
* @diff_options: (allow-none): a #GgitDiffOptions, or %NULL.
* @error: a #GError for error reporting, or %NULL.
*
* Directly generate a patch from the difference between two blobs.
*
* This is just like ggit_diff_blobs() except it generates a patch object
* for the difference instead of directly making callbacks. You can use the
* standard ggit_patch accessor functions to read the patch data, and
* you must call ggit_patch_unref on the patch when done.
*/
GgitPatch *
ggit_patch_new_from_blobs (GgitBlob *old_blob,
const gchar *old_as_path,
GgitBlob *new_blob,
const gchar *new_as_path,
GgitDiffOptions *diff_options,
GError **error)
{
gint ret;
const git_diff_options *gdiff_options;
git_patch *patch;
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
gdiff_options = _ggit_diff_options_get_diff_options (diff_options);
ret = git_patch_from_blobs (&patch,
old_blob ? _ggit_native_get (old_blob) : NULL,
old_as_path,
new_blob ? _ggit_native_get (new_blob) : NULL,
new_as_path,
(git_diff_options *) gdiff_options);
if (ret != GIT_OK)
{
_ggit_error_set (error, ret);
return NULL;
}
return _ggit_patch_wrap (patch);
}
void test_diff_blob__patch_with_freed_blobs(void)
{
git_oid a_oid, b_oid;
git_blob *a, *b;
git_patch *p;
git_buf buf = GIT_BUF_INIT;
/* tests/resources/attr/root_test1 */
cl_git_pass(git_oid_fromstrn(&a_oid, "45141a79", 8));
cl_git_pass(git_blob_lookup_prefix(&a, g_repo, &a_oid, 4));
/* tests/resources/attr/root_test2 */
cl_git_pass(git_oid_fromstrn(&b_oid, "4d713dc4", 8));
cl_git_pass(git_blob_lookup_prefix(&b, g_repo, &b_oid, 4));
cl_git_pass(git_patch_from_blobs(&p, a, NULL, b, NULL, NULL));
git_blob_free(a);
git_blob_free(b);
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(buf.ptr, BLOB_DIFF);
git_patch_free(p);
git_buf_free(&buf);
}
void test_diff_blob__can_compare_text_blobs_with_patch(void)
{
git_blob *a, *b, *c;
git_oid a_oid, b_oid, c_oid;
git_patch *p;
/* tests/resources/attr/root_test1 */
cl_git_pass(git_oid_fromstrn(&a_oid, "45141a79", 8));
cl_git_pass(git_blob_lookup_prefix(&a, g_repo, &a_oid, 8));
/* tests/resources/attr/root_test2 */
cl_git_pass(git_oid_fromstrn(&b_oid, "4d713dc4", 8));
cl_git_pass(git_blob_lookup_prefix(&b, g_repo, &b_oid, 8));
/* tests/resources/attr/root_test3 */
cl_git_pass(git_oid_fromstrn(&c_oid, "c96bbb2c2557a832", 16));
cl_git_pass(git_blob_lookup_prefix(&c, g_repo, &c_oid, 16));
/* Doing the equivalent of a `git diff -U1` on these files */
/* diff on tests/resources/attr/root_test1 */
cl_git_pass(git_patch_from_blobs(&p, a, NULL, b, NULL, &opts));
assert_patch_matches_blobs(p, a, b, 1, 6, 0, 1, 5, 0);
git_patch_free(p);
/* diff on tests/resources/attr/root_test2 */
cl_git_pass(git_patch_from_blobs(&p, b, NULL, c, NULL, &opts));
assert_patch_matches_blobs(p, b, c, 1, 15, 0, 3, 9, 3);
git_patch_free(p);
/* diff on tests/resources/attr/root_test3 */
cl_git_pass(git_patch_from_blobs(&p, a, NULL, c, NULL, &opts));
assert_patch_matches_blobs(p, a, c, 1, 13, 0, 0, 12, 1);
git_patch_free(p);
/* one more */
cl_git_pass(git_patch_from_blobs(&p, c, NULL, d, NULL, &opts));
assert_patch_matches_blobs(p, c, d, 2, 5, 9, 4, 6, 4);
git_patch_free(p);
git_blob_free(a);
git_blob_free(b);
git_blob_free(c);
}
void test_diff_blob__can_compare_identical_blobs_with_patch(void)
{
git_patch *p;
const git_diff_delta *delta;
cl_git_pass(git_patch_from_blobs(&p, d, NULL, d, NULL, &opts));
cl_assert(p != NULL);
delta = git_patch_get_delta(p);
cl_assert(delta != NULL);
cl_assert_equal_i(GIT_DELTA_UNMODIFIED, delta->status);
cl_assert_equal_sz(delta->old_file.size, git_blob_rawsize(d));
cl_assert_equal_oid(git_blob_id(d), &delta->old_file.id);
cl_assert_equal_sz(delta->new_file.size, git_blob_rawsize(d));
cl_assert_equal_oid(git_blob_id(d), &delta->new_file.id);
cl_assert_equal_i(0, (int)git_patch_num_hunks(p));
git_patch_free(p);
cl_git_pass(git_patch_from_blobs(&p, NULL, NULL, NULL, NULL, &opts));
cl_assert(p != NULL);
delta = git_patch_get_delta(p);
cl_assert(delta != NULL);
cl_assert_equal_i(GIT_DELTA_UNMODIFIED, delta->status);
cl_assert_equal_sz(0, delta->old_file.size);
cl_assert(git_oid_iszero(&delta->old_file.id));
cl_assert_equal_sz(0, delta->new_file.size);
cl_assert(git_oid_iszero(&delta->new_file.id));
cl_assert_equal_i(0, (int)git_patch_num_hunks(p));
git_patch_free(p);
cl_git_pass(git_patch_from_blobs(&p, alien, NULL, alien, NULL, &opts));
cl_assert(p != NULL);
cl_assert_equal_i(GIT_DELTA_UNMODIFIED, git_patch_get_delta(p)->status);
cl_assert_equal_i(0, (int)git_patch_num_hunks(p));
git_patch_free(p);
}
PyObject *
Blob_diff(Blob *self, PyObject *args, PyObject *kwds)
{
git_diff_options opts = GIT_DIFF_OPTIONS_INIT;
git_patch *patch;
char *old_as_path = NULL, *new_as_path = NULL;
Blob *py_blob = NULL;
int err;
char *keywords[] = {"blob", "flag", "old_as_path", "new_as_path", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O!ssI", keywords,
&BlobType, &py_blob, &opts.flags,
&old_as_path, &new_as_path))
return NULL;
err = git_patch_from_blobs(&patch, self->blob, old_as_path,
py_blob ? py_blob->blob : NULL, new_as_path,
&opts);
if (err < 0)
return Error_set(err);
return wrap_patch(patch);
}
void test_diff_blob__can_compare_against_null_blobs_with_patch(void)
{
git_blob *e = NULL;
git_patch *p;
const git_diff_delta *delta;
const git_diff_line *line;
int l, max_l;
cl_git_pass(git_patch_from_blobs(&p, d, NULL, e, NULL, &opts));
cl_assert(p != NULL);
delta = git_patch_get_delta(p);
cl_assert(delta != NULL);
cl_assert_equal_i(GIT_DELTA_DELETED, delta->status);
cl_assert_equal_oid(git_blob_id(d), &delta->old_file.id);
cl_assert_equal_sz(git_blob_rawsize(d), delta->old_file.size);
cl_assert(git_oid_iszero(&delta->new_file.id));
cl_assert_equal_sz(0, delta->new_file.size);
cl_assert_equal_i(1, (int)git_patch_num_hunks(p));
cl_assert_equal_i(14, git_patch_num_lines_in_hunk(p, 0));
max_l = git_patch_num_lines_in_hunk(p, 0);
for (l = 0; l < max_l; ++l) {
cl_git_pass(git_patch_get_line_in_hunk(&line, p, 0, l));
cl_assert_equal_i(GIT_DIFF_LINE_DELETION, (int)line->origin);
}
git_patch_free(p);
opts.flags |= GIT_DIFF_REVERSE;
cl_git_pass(git_patch_from_blobs(&p, d, NULL, e, NULL, &opts));
cl_assert(p != NULL);
delta = git_patch_get_delta(p);
cl_assert(delta != NULL);
cl_assert_equal_i(GIT_DELTA_ADDED, delta->status);
cl_assert(git_oid_iszero(&delta->old_file.id));
cl_assert_equal_sz(0, delta->old_file.size);
cl_assert_equal_oid(git_blob_id(d), &delta->new_file.id);
cl_assert_equal_sz(git_blob_rawsize(d), delta->new_file.size);
cl_assert_equal_i(1, (int)git_patch_num_hunks(p));
cl_assert_equal_i(14, git_patch_num_lines_in_hunk(p, 0));
max_l = git_patch_num_lines_in_hunk(p, 0);
for (l = 0; l < max_l; ++l) {
cl_git_pass(git_patch_get_line_in_hunk(&line, p, 0, l));
cl_assert_equal_i(GIT_DIFF_LINE_ADDITION, (int)line->origin);
}
git_patch_free(p);
opts.flags ^= GIT_DIFF_REVERSE;
cl_git_pass(git_patch_from_blobs(&p, alien, NULL, NULL, NULL, &opts));
cl_assert(p != NULL);
delta = git_patch_get_delta(p);
cl_assert(delta != NULL);
cl_assert_equal_i(GIT_DELTA_DELETED, delta->status);
cl_assert((delta->flags & GIT_DIFF_FLAG_BINARY) != 0);
cl_assert_equal_i(0, (int)git_patch_num_hunks(p));
git_patch_free(p);
cl_git_pass(git_patch_from_blobs(&p, NULL, NULL, alien, NULL, &opts));
cl_assert(p != NULL);
delta = git_patch_get_delta(p);
cl_assert(delta != NULL);
cl_assert_equal_i(GIT_DELTA_ADDED, delta->status);
cl_assert((delta->flags & GIT_DIFF_FLAG_BINARY) != 0);
cl_assert_equal_i(0, (int)git_patch_num_hunks(p));
git_patch_free(p);
}
