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#include "clar_libgit2.h"
#include "posix.h"
#include "blob.h"
#include "filter.h"
#include "buf_text.h"
#include "git2/sys/filter.h"
#include "git2/sys/repository.h"
#include "custom_helpers.h"
/* going TO_WORKDIR, filters are executed low to high
* going TO_ODB, filters are executed high to low
*/
#define BITFLIP_FILTER_PRIORITY -1
#define REVERSE_FILTER_PRIORITY -2
#ifdef GIT_WIN32
# define NEWLINE "\r\n"
#else
# define NEWLINE "\n"
#endif
static char workdir_data[] =
"some simple" NEWLINE
"data" NEWLINE
"that will be" NEWLINE
"trivially" NEWLINE
"scrambled." NEWLINE;
#define REVERSED_DATA_LEN 51
/* Represents the data above scrambled (bits flipped) after \r\n -> \n
* conversion, then bytewise reversed
*/
static unsigned char bitflipped_and_reversed_data[] =
{ 0xf5, 0xd1, 0x9b, 0x9a, 0x93, 0x9d, 0x92, 0x9e, 0x8d, 0x9c, 0x8c,
0xf5, 0x86, 0x93, 0x93, 0x9e, 0x96, 0x89, 0x96, 0x8d, 0x8b, 0xf5,
0x9a, 0x9d, 0xdf, 0x93, 0x93, 0x96, 0x88, 0xdf, 0x8b, 0x9e, 0x97,
0x8b, 0xf5, 0x9e, 0x8b, 0x9e, 0x9b, 0xf5, 0x9a, 0x93, 0x8f, 0x92,
0x96, 0x8c, 0xdf, 0x9a, 0x92, 0x90, 0x8c };
#define BITFLIPPED_AND_REVERSED_DATA_LEN 51
static git_repository *g_repo = NULL;
static void register_custom_filters(void);
void test_filter_custom__initialize(void)
{
register_custom_filters();
g_repo = cl_git_sandbox_init("empty_standard_repo");
cl_git_mkfile(
"empty_standard_repo/.gitattributes",
"hero* bitflip reverse\n"
"herofile text\n"
"heroflip -reverse binary\n"
"*.bin binary\n");
}
void test_filter_custom__cleanup(void)
{
cl_git_sandbox_cleanup();
g_repo = NULL;
}
static void register_custom_filters(void)
{
static int filters_registered = 0;
if (!filters_registered) {
cl_git_pass(git_filter_register(
"bitflip", create_bitflip_filter(), BITFLIP_FILTER_PRIORITY));
cl_git_pass(git_filter_register(
"reverse", create_reverse_filter("+reverse"),
REVERSE_FILTER_PRIORITY));
/* re-register reverse filter with standard filter=xyz priority */
cl_git_pass(git_filter_register(
"pre-reverse",
create_reverse_filter("+prereverse"),
GIT_FILTER_DRIVER_PRIORITY));
filters_registered = 1;
}
}
void test_filter_custom__to_odb(void)
{
git_filter_list *fl;
git_buf out = { 0 };
git_buf in = GIT_BUF_INIT_CONST(workdir_data, strlen(workdir_data));
cl_git_pass(git_filter_list_load(
&fl, g_repo, NULL, "herofile", GIT_FILTER_TO_ODB, 0));
cl_git_pass(git_filter_list_apply_to_data(&out, fl, &in));
cl_assert_equal_i(BITFLIPPED_AND_REVERSED_DATA_LEN, out.size);
cl_assert_equal_i(
0, memcmp(bitflipped_and_reversed_data, out.ptr, out.size));
git_filter_list_free(fl);
git_buf_free(&out);
}
void test_filter_custom__to_workdir(void)
{
git_filter_list *fl;
git_buf out = { 0 };
git_buf in = GIT_BUF_INIT_CONST(
bitflipped_and_reversed_data, BITFLIPPED_AND_REVERSED_DATA_LEN);
cl_git_pass(git_filter_list_load(
&fl, g_repo, NULL, "herofile", GIT_FILTER_TO_WORKTREE, 0));
cl_git_pass(git_filter_list_apply_to_data(&out, fl, &in));
cl_assert_equal_i(strlen(workdir_data), out.size);
cl_assert_equal_i(
0, memcmp(workdir_data, out.ptr, out.size));
git_filter_list_free(fl);
git_buf_free(&out);
}
void test_filter_custom__can_register_a_custom_filter_in_the_repository(void)
{
git_filter_list *fl;
cl_git_pass(git_filter_list_load(
&fl, g_repo, NULL, "herofile", GIT_FILTER_TO_WORKTREE, 0));
/* expect: bitflip, reverse, crlf */
cl_assert_equal_sz(3, git_filter_list_length(fl));
git_filter_list_free(fl);
cl_git_pass(git_filter_list_load(
&fl, g_repo, NULL, "herocorp", GIT_FILTER_TO_WORKTREE, 0));
/* expect: bitflip, reverse - possibly crlf depending on global config */
{
size_t flen = git_filter_list_length(fl);
cl_assert(flen == 2 || flen == 3);
}
git_filter_list_free(fl);
cl_git_pass(git_filter_list_load(
&fl, g_repo, NULL, "hero.bin", GIT_FILTER_TO_WORKTREE, 0));
/* expect: bitflip, reverse */
cl_assert_equal_sz(2, git_filter_list_length(fl));
git_filter_list_free(fl);
cl_git_pass(git_filter_list_load(
&fl, g_repo, NULL, "heroflip", GIT_FILTER_TO_WORKTREE, 0));
/* expect: bitflip (because of -reverse) */
cl_assert_equal_sz(1, git_filter_list_length(fl));
git_filter_list_free(fl);
cl_git_pass(git_filter_list_load(
&fl, g_repo, NULL, "doesntapplytome.bin",
GIT_FILTER_TO_WORKTREE, 0));
/* expect: none */
cl_assert_equal_sz(0, git_filter_list_length(fl));
git_filter_list_free(fl);
}
void test_filter_custom__order_dependency(void)
{
git_index *index;
git_blob *blob;
git_buf buf = { 0 };
/* so if ident and reverse are used together, an interesting thing
* happens - a reversed "$Id$" string is no longer going to trigger
* ident correctly. When checking out, the filters should be applied
* in order CLRF, then ident, then reverse, so ident expansion should
* work correctly. On check in, the content should be reversed, then
* ident, then CRLF filtered. Let's make sure that works...
*/
cl_git_mkfile(
"empty_standard_repo/.gitattributes",
"hero.*.rev-ident text ident prereverse eol=lf\n");
cl_git_mkfile(
"empty_standard_repo/hero.1.rev-ident",
"This is a test\n$Id$\nHave fun!\n");
cl_git_mkfile(
"empty_standard_repo/hero.2.rev-ident",
"Another test\n$dI$\nCrazy!\n");
cl_git_pass(git_repository_index(&index, g_repo));
cl_git_pass(git_index_add_bypath(index, "hero.1.rev-ident"));
cl_git_pass(git_index_add_bypath(index, "hero.2.rev-ident"));
cl_repo_commit_from_index(NULL, g_repo, NULL, 0, "Filter chains\n");
git_index_free(index);
cl_git_pass(git_blob_lookup(&blob, g_repo,
& git_index_get_bypath(index, "hero.1.rev-ident", 0)->id));
cl_assert_equal_s(
"\n!nuf evaH\n$dI$\ntset a si sihT", git_blob_rawcontent(blob));
cl_git_pass(git_blob_filtered_content(&buf, blob, "hero.1.rev-ident", 0));
/* no expansion because id was reversed at checkin and now at ident
* time, reverse is not applied yet */
cl_assert_equal_s(
"This is a test\n$Id$\nHave fun!\n", buf.ptr);
git_blob_free(blob);
cl_git_pass(git_blob_lookup(&blob, g_repo,
& git_index_get_bypath(index, "hero.2.rev-ident", 0)->id));
cl_assert_equal_s(
"\n!yzarC\n$Id$\ntset rehtonA", git_blob_rawcontent(blob));
cl_git_pass(git_blob_filtered_content(&buf, blob, "hero.2.rev-ident", 0));
/* expansion because reverse was applied at checkin and at ident time,
* reverse is not applied yet */
cl_assert_equal_s(
"Another test\n$ 59001fe193103b1016b27027c0c827d036fd0ac8 :dI$\nCrazy!\n", buf.ptr);
cl_assert_equal_i(0, git_oid_strcmp(
git_blob_id(blob), "8ca0df630d728c0c72072b6101b301391ef10095"));
git_blob_free(blob);
git_buf_free(&buf);
}
void test_filter_custom__filter_registry_failure_cases(void)
{
git_filter fake = { GIT_FILTER_VERSION, 0 };
cl_assert_equal_i(GIT_EEXISTS, git_filter_register("bitflip", &fake, 0));
cl_git_fail(git_filter_unregister(GIT_FILTER_CRLF));
cl_git_fail(git_filter_unregister(GIT_FILTER_IDENT));
cl_assert_equal_i(GIT_ENOTFOUND, git_filter_unregister("not-a-filter"));
}
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