static void
do_one_diff(apr_file_t *source_file, apr_file_t *target_file,
int *count, apr_off_t *len,
int quiet, apr_pool_t *pool,
const char *tag, FILE* stream)
{
svn_txdelta_stream_t *delta_stream = NULL;
svn_txdelta_window_t *delta_window = NULL;
apr_pool_t *fpool = svn_pool_create(pool);
apr_pool_t *wpool = svn_pool_create(pool);
*count = 0;
*len = 0;
svn_txdelta(&delta_stream,
svn_stream_from_aprfile(source_file, fpool),
svn_stream_from_aprfile(target_file, fpool),
fpool);
do {
svn_error_t *err;
err = svn_txdelta_next_window(&delta_window, delta_stream, wpool);
if (err)
svn_handle_error2(err, stderr, TRUE, "vdelta-test: ");
if (delta_window != NULL)
{
*len += print_delta_window(delta_window, tag, quiet, stream);
svn_pool_clear(wpool);
++*count;
}
} while (delta_window != NULL);
fprintf(stream, "%s: (LENGTH %" APR_OFF_T_FMT " +%d)\n", tag, *len, *count);
svn_pool_destroy(fpool);
svn_pool_destroy(wpool);
}
svn_error_t *svn_txdelta_send_txstream(svn_txdelta_stream_t *txstream,
svn_txdelta_window_handler_t handler,
void *handler_baton,
apr_pool_t *pool)
{
svn_txdelta_window_t *window;
/* create a pool just for the windows */
apr_pool_t *wpool = svn_pool_create(pool);
do
{
/* free the window (if any) */
svn_pool_clear(wpool);
/* read in a single delta window */
SVN_ERR(svn_txdelta_next_window(&window, txstream, wpool));
/* shove it at the handler */
SVN_ERR((*handler)(window, handler_baton));
}
while (window != NULL);
svn_pool_destroy(wpool);
return SVN_NO_ERROR;
}
int
main(int argc, char **argv)
{
apr_file_t *source_file_A = NULL;
apr_file_t *target_file_A = NULL;
int count_A = 0;
apr_off_t len_A = 0;
apr_file_t *source_file_B = NULL;
apr_file_t *target_file_B = NULL;
int count_B = 0;
apr_off_t len_B = 0;
apr_pool_t *pool;
int quiet = 0;
if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'q')
{
quiet = 1;
--argc; ++argv;
}
apr_initialize();
pool = svn_pool_create(NULL);
if (argc == 2)
{
target_file_A = open_binary_read(argv[1], pool);
}
else if (argc == 3)
{
source_file_A = open_binary_read(argv[1], pool);
target_file_A = open_binary_read(argv[2], pool);
}
else if (argc == 4)
{
source_file_A = open_binary_read(argv[1], pool);
target_file_A = open_binary_read(argv[2], pool);
source_file_B = open_binary_read(argv[2], pool);
target_file_B = open_binary_read(argv[3], pool);
}
else
{
fprintf(stderr,
"Usage: vdelta-test [-q] <target>\n"
" or: vdelta-test [-q] <source> <target>\n"
" or: vdelta-test [-q] <source> <intermediate> <target>\n");
exit(1);
}
do_one_diff(source_file_A, target_file_A,
&count_A, &len_A, quiet, pool, "A ", stdout);
if (source_file_B)
{
apr_pool_t *fpool = svn_pool_create(pool);
apr_pool_t *wpool = svn_pool_create(pool);
svn_txdelta_stream_t *stream_A = NULL;
svn_txdelta_stream_t *stream_B = NULL;
svn_txdelta_window_t *window_A = NULL;
svn_txdelta_window_t *window_B = NULL;
svn_txdelta_window_t *window_AB = NULL;
int count_AB = 0;
apr_off_t len_AB = 0;
putc('\n', stdout);
do_one_diff(source_file_B, target_file_B,
&count_B, &len_B, quiet, pool, "B ", stdout);
putc('\n', stdout);
{
apr_off_t offset = 0;
apr_file_seek(source_file_A, APR_SET, &offset);
apr_file_seek(target_file_A, APR_SET, &offset);
apr_file_seek(source_file_B, APR_SET, &offset);
apr_file_seek(target_file_B, APR_SET, &offset);
}
svn_txdelta(&stream_A,
svn_stream_from_aprfile(source_file_A, fpool),
svn_stream_from_aprfile(target_file_A, fpool),
fpool);
svn_txdelta(&stream_B,
svn_stream_from_aprfile(source_file_B, fpool),
svn_stream_from_aprfile(target_file_B, fpool),
fpool);
for (count_AB = 0; count_AB < count_B; ++count_AB)
{
svn_error_t *err;
err = svn_txdelta_next_window(&window_A, stream_A, wpool);
if (err)
svn_handle_error2(err, stderr, TRUE, "vdelta-test: ");
err = svn_txdelta_next_window(&window_B, stream_B, wpool);
if (err)
svn_handle_error2(err, stderr, TRUE, "vdelta-test: ");
/* Note: It's not possible that window_B is null, we already
counted the number of windows in the second delta. */
assert(window_A != NULL || window_B->src_ops == 0);
if (window_B->src_ops == 0)
{
window_AB = window_B;
window_AB->sview_len = 0;
}
else
window_AB = svn_txdelta_compose_windows(window_A, window_B,
wpool);
len_AB += print_delta_window(window_AB, "AB", quiet, stdout);
svn_pool_clear(wpool);
}
fprintf(stdout, "AB: (LENGTH %" APR_OFF_T_FMT " +%d)\n",
len_AB, count_AB);
}
if (source_file_A) apr_file_close(source_file_A);
if (target_file_A) apr_file_close(target_file_A);
if (source_file_B) apr_file_close(source_file_B);
if (target_file_B) apr_file_close(source_file_B);
svn_pool_destroy(pool);
apr_terminate();
exit(0);
}
/* (Note: *LAST_SEED is an output parameter.) */
static svn_error_t *
do_random_combine_test(const char **msg,
svn_boolean_t msg_only,
apr_pool_t *pool,
apr_uint32_t *last_seed)
{
static char msg_buff[256];
apr_uint32_t seed, bytes_range, maxlen;
int i, iterations, dump_files, print_windows;
const char *random_bytes;
/* Initialize parameters and print out the seed in case we dump core
or something. */
init_params(&seed, &maxlen, &iterations, &dump_files, &print_windows,
&random_bytes, &bytes_range, pool);
sprintf(msg_buff,
"random combine delta test, seed = %lu", (unsigned long) seed);
*msg = msg_buff;
if (msg_only)
return SVN_NO_ERROR;
else
printf("SEED: %s\n", msg_buff);
for (i = 0; i < iterations; i++)
{
/* Generate source and target for the delta and its application. */
apr_uint32_t subseed_base = svn_test_rand((*last_seed = seed, &seed));
apr_file_t *source = generate_random_file(maxlen, subseed_base, &seed,
random_bytes, bytes_range,
dump_files, pool);
apr_file_t *middle = generate_random_file(maxlen, subseed_base, &seed,
random_bytes, bytes_range,
dump_files, pool);
apr_file_t *target = generate_random_file(maxlen, subseed_base, &seed,
random_bytes, bytes_range,
dump_files, pool);
apr_file_t *source_copy = copy_tempfile(source, pool);
apr_file_t *middle_copy = copy_tempfile(middle, pool);
apr_file_t *target_regen = open_tempfile(NULL, pool);
svn_txdelta_stream_t *txdelta_stream_A;
svn_txdelta_stream_t *txdelta_stream_B;
svn_txdelta_window_handler_t handler;
svn_stream_t *stream;
void *handler_baton;
/* Set up a four-stage pipeline: create two deltas, combine them
and convert the result to svndiff format, parse that back
into delta format, and apply it to a copy of the source file
to see if we get the same target back. */
apr_pool_t *delta_pool = svn_pool_create(pool);
/* Make stage 4: apply the text delta. */
svn_txdelta_apply(svn_stream_from_aprfile(source_copy, delta_pool),
svn_stream_from_aprfile(target_regen, delta_pool),
NULL, NULL, delta_pool, &handler, &handler_baton);
/* Make stage 3: reparse the text delta. */
stream = svn_txdelta_parse_svndiff(handler, handler_baton, TRUE,
delta_pool);
/* Make stage 2: encode the text delta in svndiff format. */
svn_txdelta_to_svndiff2(&handler, &handler_baton, stream, 1,
delta_pool);
/* Make stage 1: create the text deltas. */
svn_txdelta(&txdelta_stream_A,
svn_stream_from_aprfile(source, delta_pool),
svn_stream_from_aprfile(middle, delta_pool),
delta_pool);
svn_txdelta(&txdelta_stream_B,
svn_stream_from_aprfile(middle_copy, delta_pool),
svn_stream_from_aprfile(target, delta_pool),
delta_pool);
{
svn_txdelta_window_t *window_A;
svn_txdelta_window_t *window_B;
svn_txdelta_window_t *composite;
apr_pool_t *wpool = svn_pool_create(delta_pool);
do
{
SVN_ERR(svn_txdelta_next_window(&window_A, txdelta_stream_A,
wpool));
if (print_windows)
delta_window_print(window_A, "A ", stdout);
SVN_ERR(svn_txdelta_next_window(&window_B, txdelta_stream_B,
wpool));
if (print_windows)
delta_window_print(window_B, "B ", stdout);
if (!window_B)
break;
assert(window_A != NULL || window_B->src_ops == 0);
if (window_B->src_ops == 0)
{
composite = window_B;
composite->sview_len = 0;
}
else
composite = svn_txdelta_compose_windows(window_A, window_B,
wpool);
if (print_windows)
delta_window_print(composite, "AB", stdout);
/* The source view length should not be 0 if there are
source copy ops in the window. */
if (composite
&& composite->sview_len == 0 && composite->src_ops > 0)
return svn_error_create
(SVN_ERR_FS_GENERAL, NULL,
"combined delta window is inconsistent");
SVN_ERR(handler(composite, handler_baton));
svn_pool_clear(wpool);
}
while (composite != NULL);
svn_pool_destroy(wpool);
}
svn_pool_destroy(delta_pool);
SVN_ERR(compare_files(target, target_regen, dump_files));
apr_file_close(source);
apr_file_close(middle);
apr_file_close(target);
apr_file_close(source_copy);
apr_file_close(middle_copy);
apr_file_close(target_regen);
}
return SVN_NO_ERROR;
}
static svn_error_t *
stream_window_test(const char **msg,
svn_boolean_t msg_only,
svn_test_opts_t *opts,
apr_pool_t *pool)
{
/* Note: put these in data segment, not the stack */
static char source[109001];
static char target[109001];
int i;
char *p = &source[9];
svn_checksum_t *expected;
svn_checksum_t *actual;
svn_string_t source_str;
svn_string_t target_str;
svn_stream_t *source_stream;
svn_stream_t *target_stream;
svn_txdelta_stream_t *txstream;
*msg = "txdelta stream and windows test";
if (msg_only)
return SVN_NO_ERROR;
memcpy(source, "a\nb\nc\nd\ne", 9);
for (i = 100; i--; )
*p++ = '\n';
for (i = 999; i--; p += 109)
memcpy(p, source, 109);
source[109000] = '\0';
memcpy(target, source, 109001);
for (i = 1000; i--; )
target[i*109 + 4] = 'X';
SVN_ERR(svn_checksum(&expected, svn_checksum_md5, target, 109000, pool));
/* f6fd44565e14c6e44b35292719deb77e */
printf("expected: %s\n", svn_checksum_to_cstring(expected, pool));
source_str.data = source;
source_str.len = 109000;
source_stream = svn_stream_from_string(&source_str, pool);
target_str.data = target;
target_str.len = 109000;
target_stream = svn_stream_from_string(&target_str, pool);
svn_txdelta(&txstream, source_stream, target_stream, pool);
while (1)
{
svn_txdelta_window_t *window;
SVN_ERR(svn_txdelta_next_window(&window, txstream, pool));
if (window == NULL)
break;
/* ### examine the window */
}
actual = svn_checksum__from_digest(svn_txdelta_md5_digest(txstream),
svn_checksum_md5, pool);;
printf(" actual: %s\n", svn_checksum_to_cstring(actual, pool));
if (!svn_checksum_match(expected, actual))
{
return svn_error_create(SVN_ERR_TEST_FAILED, NULL,
"Checksums did not match.");
}
return SVN_NO_ERROR;
}
