test_read_position.c [plain text]
#include "test.h"
__FBSDID("$FreeBSD: head/lib/libarchive/test/test_read_position.c 189389 2009-03-05 02:19:42Z kientzle $");
static unsigned char nulls[1000];
static unsigned char tmp[1000];
static unsigned char buff[10000];
size_t data_sizes[] = {0, 5, 511, 512, 513};
static void verify_read_positions(struct archive *a);
static void
verify_read_positions(struct archive *a)
{
struct archive_entry *ae;
intmax_t read_position = 0;
size_t j;
assert(read_position == (intmax_t)archive_read_header_position(a));
for (j = 0; j < sizeof(data_sizes)/sizeof(data_sizes[0]); ++j) {
assertA(0 == archive_read_next_header(a, &ae));
assertEqualInt(read_position,
(intmax_t)archive_read_header_position(a));
if (j & 1)
assertEqualInt(1,
archive_read_data(a, tmp, 1));
assertA(0 == archive_read_data_skip(a));
assertEqualInt(read_position,
(intmax_t)archive_read_header_position(a));
read_position += 512;
read_position += (data_sizes[j] + 511) & ~511;
}
assertA(1 == archive_read_next_header(a, &ae));
assertEqualInt(read_position, (intmax_t)archive_read_header_position(a));
assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
assertEqualInt(read_position, (intmax_t)archive_read_header_position(a));
}
DEFINE_TEST(test_read_position)
{
struct archive *a;
struct archive_entry *ae;
size_t write_pos;
size_t i;
assert(sizeof(nulls) + 512 + 1024 <= sizeof(buff));
assert(NULL != (a = archive_write_new()));
assertA(0 == archive_write_set_format_pax_restricted(a));
assertA(0 == archive_write_set_bytes_per_block(a, 512));
assertA(0 == archive_write_open_memory(a, buff, sizeof(buff), &write_pos));
for (i = 0; i < sizeof(data_sizes)/sizeof(data_sizes[0]); ++i) {
assert((ae = archive_entry_new()) != NULL);
archive_entry_set_pathname(ae, "testfile");
archive_entry_set_mode(ae, S_IFREG);
archive_entry_set_size(ae, data_sizes[i]);
assertA(0 == archive_write_header(a, ae));
archive_entry_free(ae);
assertA(data_sizes[i]
== (size_t)archive_write_data(a, nulls, sizeof(nulls)));
}
assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
assertEqualInt(ARCHIVE_OK, archive_write_free(a));
assert(NULL != (a = archive_read_new()));
assertA(0 == archive_read_support_format_tar(a));
assertA(0 == read_open_memory(a, buff, sizeof(buff), 512));
verify_read_positions(a);
archive_read_free(a);
assert(NULL != (a = archive_read_new()));
assertA(0 == archive_read_support_format_tar(a));
assertA(0 == read_open_memory_minimal(a, buff, sizeof(buff), 512));
verify_read_positions(a);
archive_read_free(a);
}