#include "clar_libgit2.h"

#include "posix.h"

#include "blob.h"

#include "buf_text.h"

static git_repository *g_repo = NULL;

#define CRLF_NUM_TEST_OBJECTS	9

static const char *g_crlf_raw[CRLF_NUM_TEST_OBJECTS] = {

	"",

	"foo\nbar\n",

	"foo\rbar\r",

	"foo\r\nbar\r\n",

	"foo\nbar\rboth\r\nreversed\n\ragain\nproblems\r",

	"123\n\000\001\002\003\004abc\255\254\253\r\n",

	"\xEF\xBB\xBFThis is UTF-8\n",

	"\xEF\xBB\xBF\xE3\x81\xBB\xE3\x81\x92\xE3\x81\xBB\xE3\x81\x92\r\n\xE3\x81\xBB\xE3\x81\x92\xE3\x81\xBB\xE3\x81\x92\r\n",

	"\xFE\xFF\x00T\x00h\x00i\x00s\x00!"

};

static git_off_t g_crlf_raw_len[CRLF_NUM_TEST_OBJECTS] = {

	-1, -1, -1, -1, -1, 17, -1, -1, 12

};

static git_oid g_crlf_oids[CRLF_NUM_TEST_OBJECTS];

static git_buf g_crlf_filtered[CRLF_NUM_TEST_OBJECTS] = {

	{ "", 0, 0 },

	{ "foo\nbar\n", 0, 8 },

	{ "foo\rbar\r", 0, 8 },

	{ "foo\nbar\n", 0, 8 },

	{ "foo\nbar\rboth\nreversed\n\ragain\nproblems\r", 0, 38 },

	{ "123\n\000\001\002\003\004abc\255\254\253\n", 0, 16 },

	{ "\xEF\xBB\xBFThis is UTF-8\n", 0, 17 },

	{ "\xEF\xBB\xBF\xE3\x81\xBB\xE3\x81\x92\xE3\x81\xBB\xE3\x81\x92\n\xE3\x81\xBB\xE3\x81\x92\xE3\x81\xBB\xE3\x81\x92\n", 0, 29 },

	{ "\xFE\xFF\x00T\x00h\x00i\x00s\x00!", 0, 12 }

};

static git_buf_text_stats g_crlf_filtered_stats[CRLF_NUM_TEST_OBJECTS] = {

	{ 0, 0, 0, 0, 0, 0, 0 },

	{ 0, 0, 0, 2, 0, 6, 0 },

	{ 0, 0, 2, 0, 0, 6, 0 },

	{ 0, 0, 2, 2, 2, 6, 0 },

	{ 0, 0, 4, 4, 1, 31, 0 },

	{ 0, 1, 1, 2, 1, 9, 5 },

	{ GIT_BOM_UTF8, 0, 0, 1, 0, 16, 0 },

	{ GIT_BOM_UTF8, 0, 2, 2, 2, 27, 0 },

	{ GIT_BOM_UTF16_BE, 5, 0, 0, 0, 7, 5 },

};

void test_object_blob_filter__initialize(void)

{

	int i;

	g_repo = cl_git_sandbox_init("empty_standard_repo");

	for (i = 0; i < CRLF_NUM_TEST_OBJECTS; i++) {

		if (g_crlf_raw_len[i] < 0)

			g_crlf_raw_len[i] = strlen(g_crlf_raw[i]);

		cl_git_pass(git_blob_create_frombuffer(

			&g_crlf_oids[i], g_repo, g_crlf_raw[i], (size_t)g_crlf_raw_len[i]));

	}

}

void test_object_blob_filter__cleanup(void)

{

	cl_git_sandbox_cleanup();

}

void test_object_blob_filter__unfiltered(void)

{

	int i;

	git_blob *blob;

	for (i = 0; i < CRLF_NUM_TEST_OBJECTS; i++) {

		size_t raw_len = (size_t)g_crlf_raw_len[i];

		cl_git_pass(git_blob_lookup(&blob, g_repo, &g_crlf_oids[i]));

		cl_assert_equal_sz(raw_len, (size_t)git_blob_rawsize(blob));

		cl_assert_equal_i(

			0, memcmp(g_crlf_raw[i], git_blob_rawcontent(blob), raw_len));

		git_blob_free(blob);

	}

}

void test_object_blob_filter__stats(void)

{

	int i;

	git_blob *blob;

	git_buf buf = GIT_BUF_INIT;

	git_buf_text_stats stats;

	for (i = 0; i < CRLF_NUM_TEST_OBJECTS; i++) {

		cl_git_pass(git_blob_lookup(&blob, g_repo, &g_crlf_oids[i]));

		cl_git_pass(git_blob__getbuf(&buf, blob));

		git_buf_text_gather_stats(&stats, &buf, false);

		cl_assert_equal_i(

			0, memcmp(&g_crlf_filtered_stats[i], &stats, sizeof(stats)));

		git_blob_free(blob);

	}

	git_buf_free(&buf;;

}

void test_object_blob_filter__to_odb(void)

{

	git_filter_list *fl = NULL;

	git_config *cfg;

	int i;

	git_blob *blob;

	git_buf out = GIT_BUF_INIT, zeroed;

	cl_git_pass(git_repository_config(&cfg, g_repo));

	cl_assert(cfg);

	git_attr_cache_flush(g_repo);

	cl_git_append2file("empty_standard_repo/.gitattributes", "*.txt text\n");

	cl_git_pass(git_filter_list_load(

		&fl, g_repo, NULL, "filename.txt", GIT_FILTER_TO_ODB, 0));

	cl_assert(fl != NULL);

	for (i = 0; i < CRLF_NUM_TEST_OBJECTS; i++) {

		cl_git_pass(git_blob_lookup(&blob, g_repo, &g_crlf_oids[i]));

		/* try once with allocated blob */

		cl_git_pass(git_filter_list_apply_to_blob(&out, fl, blob));

		cl_assert_equal_sz(g_crlf_filtered[i].size, out.size);

		cl_assert_equal_i(

			0, memcmp(out.ptr, g_crlf_filtered[i].ptr, out.size));

		/* try again with zeroed blob */

		memset(&zeroed, 0, sizeof(zeroed));

		cl_git_pass(git_filter_list_apply_to_blob(&zeroed, fl, blob));

		cl_assert_equal_sz(g_crlf_filtered[i].size, zeroed.size);

		cl_assert_equal_i(

			0, memcmp(zeroed.ptr, g_crlf_filtered[i].ptr, zeroed.size));

		git_buf_free(&zeroed);

		git_blob_free(blob);

	}

	git_filter_list_free(fl);

	git_buf_free(&out;;

	git_config_free(cfg);

}