blob: identify binary contentethomson/blob_data_is_binary

Introduce `git_blob_data_is_binary` to examine a blob's data, instead of
the blob itself.  A replacement for `git_buf_is_binary`.

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/diff/blob.c b/tests/diff/blob.c
index 9f71e4ea6..d2f42207d 100644
--- a/tests/diff/blob.c
+++ b/tests/diff/blob.c
@@ -604,12 +604,28 @@ void test_diff_blob__can_correctly_detect_a_binary_blob_as_binary(void)
 	cl_assert_equal_i(true, git_blob_is_binary(alien));
 }
 
+void test_diff_blob__can_correctly_detect_binary_blob_data_as_binary(void)
+{
+	/* alien.png */
+	const char *content = git_blob_rawcontent(alien);
+	size_t len = (size_t)git_blob_rawsize(alien);
+	cl_assert_equal_i(true, git_blob_data_is_binary(content, len));
+}
+
 void test_diff_blob__can_correctly_detect_a_textual_blob_as_non_binary(void)
 {
 	/* tests/resources/attr/root_test4.txt */
 	cl_assert_equal_i(false, git_blob_is_binary(d));
 }
 
+void test_diff_blob__can_correctly_detect_textual_blob_data_as_non_binary(void)
+{
+	/* tests/resources/attr/root_test4.txt */
+	const char *content = git_blob_rawcontent(d);
+	size_t len = (size_t)git_blob_rawsize(d);
+	cl_assert_equal_i(false, git_blob_data_is_binary(content, len));
+}
+
 /*
  * git_diff_blob_to_buffer tests
  */