PyObject *
Blob_diff_to_buffer(Blob *self, PyObject *args, PyObject *kwds)
{
git_diff_options opts = GIT_DIFF_OPTIONS_INIT;
git_patch *patch;
char *old_as_path = NULL, *buffer_as_path = NULL;
const char *buffer = NULL;
Py_ssize_t buffer_len;
int err;
char *keywords[] = {"buffer", "flag", "old_as_path", "buffer_as_path",
NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|s#ssI", keywords,
&buffer, &buffer_len, &opts.flags,
&old_as_path, &buffer_as_path))
return NULL;
err = git_patch_from_blob_and_buffer(&patch, self->blob, old_as_path,
buffer, buffer_len, buffer_as_path,
&opts);
if (err < 0)
return Error_set(err);
return wrap_patch(patch);
}
void test_diff_blob__using_path_and_attributes(void)
{
git_config *cfg;
git_blob *bin, *nonbin;
git_oid oid;
const char *nonbin_content = "Hello from the root\n";
const char *bin_content =
"0123456789\n\x01\x02\x03\x04\x05\x06\x07\x08\x09\x00\n0123456789\n";
size_t bin_len = 33;
const char *changed;
git_patch *p;
git_buf buf = GIT_BUF_INIT;
/* set up custom diff drivers and 'diff' attribute mappings for them */
cl_git_pass(git_repository_config(&cfg, g_repo));
cl_git_pass(git_config_set_bool(cfg, "diff.iam_binary.binary", 1));
cl_git_pass(git_config_set_bool(cfg, "diff.iam_text.binary", 0));
cl_git_pass(git_config_set_string(
cfg, "diff.iam_alphactx.xfuncname", "^[A-Za-z].*$"));
cl_git_pass(git_config_set_bool(cfg, "diff.iam_textalpha.binary", 0));
cl_git_pass(git_config_set_string(
cfg, "diff.iam_textalpha.xfuncname", "^[A-Za-z].*$"));
cl_git_pass(git_config_set_string(
cfg, "diff.iam_numctx.funcname", "^[0-9][0-9]*"));
cl_git_pass(git_config_set_bool(cfg, "diff.iam_textnum.binary", 0));
cl_git_pass(git_config_set_string(
cfg, "diff.iam_textnum.funcname", "^[0-9][0-9]*"));
git_config_free(cfg);
cl_git_append2file(
"attr/.gitattributes",
"\n\n# test_diff_blob__using_path_and_attributes extra\n\n"
"*.binary diff=iam_binary\n"
"*.textary diff=iam_text\n"
"*.alphary diff=iam_alphactx\n"
"*.textalphary diff=iam_textalpha\n"
"*.textnumary diff=iam_textnum\n"
"*.numary diff=iam_numctx\n\n");
opts.context_lines = 0;
opts.flags |= GIT_DIFF_INCLUDE_UNMODIFIED;
cl_git_pass(git_oid_fromstrn(&oid, "45141a79", 8));
cl_git_pass(git_blob_lookup_prefix(&nonbin, g_repo, &oid, 8));
/* 20b: "Hello from the root\n" */
cl_git_pass(git_oid_fromstrn(&oid, "b435cd56", 8));
cl_git_pass(git_blob_lookup_prefix(&bin, g_repo, &oid, 8));
/* 33b: "0123456789\n\x01\x02\x03\x04\x05\x06\x07\x08\x09\n0123456789\n" */
/* non-binary to reference content */
quick_diff_blob_to_str(nonbin, NULL, nonbin_content, 0, NULL);
assert_identical_blobs_comparison(&expected);
cl_assert_equal_i(0, expected.files_binary);
/* binary to reference content */
quick_diff_blob_to_str(bin, NULL, bin_content, bin_len, NULL);
assert_identical_blobs_comparison(&expected);
cl_assert_equal_i(1, expected.files_binary);
/* add some text */
changed = "Hello from the root\nMore lines\nAnd more\nGo here\n";
quick_diff_blob_to_str(nonbin, NULL, changed, 0, NULL);
assert_one_modified(1, 3, 0, 3, 0, &expected);
quick_diff_blob_to_str(nonbin, "foo/bar.binary", changed, 0, NULL);
cl_assert_equal_i(1, expected.files);
cl_assert_equal_i(1, expected.file_status[GIT_DELTA_MODIFIED]);
cl_assert_equal_i(1, expected.files_binary);
cl_assert_equal_i(0, expected.hunks);
cl_assert_equal_i(0, expected.lines);
quick_diff_blob_to_str(nonbin, "foo/bar.textary", changed, 0, NULL);
assert_one_modified(1, 3, 0, 3, 0, &expected);
quick_diff_blob_to_str(nonbin, "foo/bar.alphary", changed, 0, NULL);
assert_one_modified(1, 3, 0, 3, 0, &expected);
cl_git_pass(git_patch_from_blob_and_buffer(
&p, nonbin, "zzz.normal", changed, strlen(changed), NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.normal b/zzz.normal\n"
"index 45141a7..75b0dbb 100644\n"
"--- a/zzz.normal\n"
"+++ b/zzz.normal\n"
"@@ -1,0 +2,3 @@ Hello from the root\n"
"+More lines\n"
"+And more\n"
"+Go here\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
cl_git_pass(git_patch_from_blob_and_buffer(
&p, nonbin, "zzz.binary", changed, strlen(changed), NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.binary b/zzz.binary\n"
"index 45141a7..75b0dbb 100644\n"
"Binary files a/zzz.binary and b/zzz.binary differ\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
cl_git_pass(git_patch_from_blob_and_buffer(
&p, nonbin, "zzz.alphary", changed, strlen(changed), NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.alphary b/zzz.alphary\n"
"index 45141a7..75b0dbb 100644\n"
"--- a/zzz.alphary\n"
"+++ b/zzz.alphary\n"
"@@ -1,0 +2,3 @@ Hello from the root\n"
"+More lines\n"
"+And more\n"
"+Go here\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
cl_git_pass(git_patch_from_blob_and_buffer(
&p, nonbin, "zzz.numary", changed, strlen(changed), NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.numary b/zzz.numary\n"
"index 45141a7..75b0dbb 100644\n"
"--- a/zzz.numary\n"
"+++ b/zzz.numary\n"
"@@ -1,0 +2,3 @@\n"
"+More lines\n"
"+And more\n"
"+Go here\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
/* "0123456789\n\x01\x02\x03\x04\x05\x06\x07\x08\x09\x00\n0123456789\n"
* 33 bytes
*/
changed = "0123456789\n\x01\x02\x03\x04\x05\x06\x07\x08\x09\x00\nreplace a line\n";
cl_git_pass(git_patch_from_blob_and_buffer(
&p, bin, "zzz.normal", changed, 37, NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.normal b/zzz.normal\n"
"index b435cd5..1604519 100644\n"
"Binary files a/zzz.normal and b/zzz.normal differ\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
cl_git_pass(git_patch_from_blob_and_buffer(
&p, bin, "zzz.textary", changed, 37, NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.textary b/zzz.textary\n"
"index b435cd5..1604519 100644\n"
"--- a/zzz.textary\n"
"+++ b/zzz.textary\n"
"@@ -3 +3 @@\n"
"-0123456789\n"
"+replace a line\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
cl_git_pass(git_patch_from_blob_and_buffer(
&p, bin, "zzz.textalphary", changed, 37, NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.textalphary b/zzz.textalphary\n"
"index b435cd5..1604519 100644\n"
"--- a/zzz.textalphary\n"
"+++ b/zzz.textalphary\n"
"@@ -3 +3 @@\n"
"-0123456789\n"
"+replace a line\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
cl_git_pass(git_patch_from_blob_and_buffer(
&p, bin, "zzz.textnumary", changed, 37, NULL, &opts));
cl_git_pass(git_patch_to_buf(&buf, p));
cl_assert_equal_s(
"diff --git a/zzz.textnumary b/zzz.textnumary\n"
"index b435cd5..1604519 100644\n"
"--- a/zzz.textnumary\n"
"+++ b/zzz.textnumary\n"
"@@ -3 +3 @@ 0123456789\n"
"-0123456789\n"
"+replace a line\n", buf.ptr);
git_buf_clear(&buf);
git_patch_free(p);
git_buf_free(&buf);
git_blob_free(nonbin);
git_blob_free(bin);
}
void test_diff_blob__can_compare_blob_to_buffer_with_patch(void)
{
git_patch *p;
git_blob *a;
git_oid a_oid;
const char *a_content = "Hello from the root\n";
const char *b_content = "Hello from the root\n\nSome additional lines\n\nDown here below\n\n";
size_t tc, ta, td;
/* 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));
/* diff from blob a to content of b */
cl_git_pass(git_patch_from_blob_and_buffer(
&p, a, NULL, b_content, strlen(b_content), NULL, &opts));
cl_assert(p != NULL);
cl_assert_equal_i(GIT_DELTA_MODIFIED, git_patch_get_delta(p)->status);
cl_assert_equal_i(1, (int)git_patch_num_hunks(p));
cl_assert_equal_i(6, git_patch_num_lines_in_hunk(p, 0));
cl_git_pass(git_patch_line_stats(&tc, &ta, &td, p));
cl_assert_equal_i(1, (int)tc);
cl_assert_equal_i(5, (int)ta);
cl_assert_equal_i(0, (int)td);
git_patch_free(p);
/* diff from blob a to content of a */
opts.flags |= GIT_DIFF_INCLUDE_UNMODIFIED;
cl_git_pass(git_patch_from_blob_and_buffer(
&p, a, NULL, a_content, strlen(a_content), 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);
/* diff from NULL blob to content of a */
cl_git_pass(git_patch_from_blob_and_buffer(
&p, NULL, NULL, a_content, strlen(a_content), NULL, &opts));
cl_assert(p != NULL);
cl_assert_equal_i(GIT_DELTA_ADDED, git_patch_get_delta(p)->status);
cl_assert_equal_i(1, (int)git_patch_num_hunks(p));
cl_assert_equal_i(1, git_patch_num_lines_in_hunk(p, 0));
git_patch_free(p);
/* diff from blob a to NULL buffer */
cl_git_pass(git_patch_from_blob_and_buffer(
&p, a, NULL, NULL, 0, NULL, &opts));
cl_assert(p != NULL);
cl_assert_equal_i(GIT_DELTA_DELETED, git_patch_get_delta(p)->status);
cl_assert_equal_i(1, (int)git_patch_num_hunks(p));
cl_assert_equal_i(1, git_patch_num_lines_in_hunk(p, 0));
git_patch_free(p);
/* diff with reverse */
opts.flags ^= GIT_DIFF_REVERSE;
cl_git_pass(git_patch_from_blob_and_buffer(
&p, a, NULL, NULL, 0, NULL, &opts));
cl_assert(p != NULL);
cl_assert_equal_i(GIT_DELTA_ADDED, git_patch_get_delta(p)->status);
cl_assert_equal_i(1, (int)git_patch_num_hunks(p));
cl_assert_equal_i(1, git_patch_num_lines_in_hunk(p, 0));
git_patch_free(p);
git_blob_free(a);
}
