static void Update( void )
{
// Note that even though GS_QUIT is being set here in Update(), the following Draw()
// will still be executed.
// draw every .25 seconds
lasttime += frame_time;
if( lasttime > .25f )
{
lasttime -= .25f;
advance_block();
}
printf("Update::level_demo\n");
printf("\tframe_time = %.04f sec\n\tlevel_time = %.04f sec\n", frame_time, level_time);
if( KeyTriggered( KEY_r ) )
GS_next = GS_RESTART;
// Quit if escape is pressed
if( KeyTriggered( KEY_ESCAPE ) )
GS_next = GS_QUIT;
}
static int
process_part(const char *data, size_t len)
{
size_t maxlen;
size_t amount_read = 0;
switch(sm.state)
{
case IN_HEADER:
maxlen = (sizeof sm.header - sm.data_read);
if (maxlen > len)
maxlen = len;
memcpy(((char *)&sm.header) + sm.data_read, data, maxlen);
sm.data_read += maxlen;
amount_read = maxlen;
sm.total_data_read += amount_read;
break;
case IN_LONG_FILENAME:
maxlen = sm.filedata_left;
if (maxlen > len)
maxlen = len;
assert(sm.longfilename);
memcpy(sm.longfilename + sm.data_read, data, maxlen);
sm.data_read += maxlen;
sm.filedata_left -= maxlen;
sm.until_header_left -= maxlen;
amount_read = maxlen;
sm.total_data_read += amount_read;
if (sm.filedata_left == 0)
{
if (strlen(sm.longfilename) > sm.data_read)
fatal_error("index_from_tar: Wrong long-filename length");
sm.state = IN_EXTRA_DATA;
sm.data_read = 0;
/* Here we don't update the smblock! we want to
* keep it as the start of the long name header */
}
break;
case IN_EXTRA_DATA:
maxlen = sm.until_header_left;
if (maxlen > len)
maxlen = len;
sm.data_read += maxlen;
sm.until_header_left -= maxlen;
amount_read = maxlen;
sm.total_data_read += amount_read;
if (sm.until_header_left == 0)
{
sm.state = IN_HEADER;
sm.data_read = 0;
advance_block();
}
break;
case IN_DATA:
maxlen = sm.filedata_left;
if (maxlen > len)
maxlen = len;
sm.data_read += maxlen;
sm.filedata_left -= maxlen;
sm.until_header_left -= maxlen;
amount_read = maxlen;
if (rsync_signature && maxlen > 0)
rsync_signature_work(rsync_signature, data, maxlen);
sm.total_data_read += amount_read;
if (command_line.debug > 2)
fprintf(stderr, "index_from_tar: still %lli to skip\n", sm.filedata_left);
if (sm.filedata_left == 0)
{
sm.state = IN_EXTRA_DATA;
sm.data_read = 0;
advance_block();
if (rsync_signature)
{
size_t siglen;
size_t len;
int res;
/* Mark end of file to rsync */
rsync_signature_work(rsync_signature, 0, 0);
/* Should output the block name too */
siglen = rsync_signature_size(rsync_signature);
len = siglen + strlen(index_filename) + 1 /*\0*/;
mytar_set_size(indextar, len);
mytar_write_header(indextar);
/* The name, and \0 */
res = mytar_write_data(indextar, index_filename,
strlen(index_filename) + 1);
if (res == -1)
error("Cannot write index tar 1 - mytar_write_data");
/* Then the rsync signature */
res = mytar_write_data(indextar, rsync_signature->output,
siglen);
if (res == -1)
error("Cannot write index tar 2 - mytar_write_data");
rsync_signature_free(rsync_signature);
rsync_signature = 0;
res = mytar_write_end(indextar);
if (res == -1)
error("Cannot write index tar - mytar_write_end");
}
}
break;
}
if (sm.state == IN_HEADER && sm.data_read == sizeof sm.header)
{
const struct header_gnu_tar *sh = &sm.header;
int checksum;
unsigned long long size;
int should_rsync = 0;
/* Process the header */
if (sh->checksum[0] == '\0')
{
/* Skip block, it should be final zero block. We could check it. */
sm.data_read = 0;
sm.state = IN_HEADER;
return amount_read;
}
checksum = read_octal_number(sh->checksum, sizeof sh->checksum);
if (calc_checksum(sh) != checksum)
error("Failed checksum interpreting tar");
size = read_size(sh->size);
sm.filedata_left = size;
sm.until_header_left = size;
/* Clamp at 512 bytes */
if (sm.until_header_left % 512 > 0)
sm.until_header_left += 512 - sm.until_header_left % 512;
if (sh->typeflag[0] == 'L')
{
sm.longfilename = malloc(sm.filedata_left+1);
if (!sm.longfilename)
fatal_error("Cannot allocate");
sm.longfilename[sm.filedata_left] = '\0';
sm.state = IN_LONG_FILENAME;
sm.data_read = 0;
return amount_read;
}
if (sh->typeflag[0] == 'K') /* Long link name. We ignore it */
{
sm.state = IN_DATA;
sm.data_read = 0;
return amount_read;
}
/* Check that we parse a GNU tar archive,
* and that we know the type. */
if (strncmp(sh->magic, "ustar ", 6) != 0 ||
strncmp(sh->version, " \0", 2) != 0 ||
(sh->typeflag[0] != '0' &&
sh->typeflag[0] != '5' &&
sh->typeflag[0] != '2' &&
sh->typeflag[0] != '1'
))
{
/* Unknown file. Skip data. */
char *fname;
fname = read_fixed_size_string(sh->name, sizeof sh->name);
fprintf(stderr, "Unknown header type, skipping %llu bytes: %s\n",
sm.until_header_left, fname);
free(fname);
sm.data_read = 0;
if (sm.filedata_left > 0)
sm.state = IN_DATA;
else
{
sm.state = IN_HEADER;
advance_block();
}
return amount_read;
}
mytar_new_file(indextar);
if (sm.longfilename)
{
if (command_line.debug > 1)
fprintf(stderr, "Writing index entry for the file %s\n", sm.longfilename);
mytar_set_filename(indextar, sm.longfilename);
free(sm.longfilename);
sm.longfilename = 0;
}
else
{
char name[sizeof sh->name + 1];
strcpyn(name, sh->name, sizeof sh->name);
if (command_line.debug > 1)
fprintf(stderr, "Writing index entry for the file %s\n", name);
mytar_set_filename(indextar, name);
}
mytar_set_mode(indextar, read_octal_number(sh->mode, sizeof sh->mode));
mytar_set_size(indextar, 0);
mytar_set_uid(indextar, read_octal_number(sh->uid, sizeof sh->uid));
mytar_set_gid(indextar, read_octal_number(sh->gid, sizeof sh->gid));
mytar_set_uname(indextar, sh->uname); /* internal strncopy will save harm */
mytar_set_gname(indextar, sh->gname); /* internal strncopy will save harm */
switch(sh->typeflag[0])
{
case '5':
mytar_set_filetype(indextar, S_IFDIR);
break;
case '0':
if (command_line.should_rsync &&
sm.filedata_left > command_line.rsync_minimal_size)
should_rsync = 1;
if (should_rsync)
mytar_set_filetype(indextar, S_IFREG);
else
mytar_set_filetype(indextar, S_IFLNK);
break;
case '1':
case '2':
mytar_set_filetype(indextar, S_IFLNK);
break;
default:
error("Indexing unknown file type");
}
mytar_set_mtime(indextar, read_octal_number(sh->mtime, sizeof sh->mtime));
mytar_set_atime(indextar, read_octal_number(sh->mtime, sizeof sh->mtime));
{
/* Start of block file - header */
snprintf(index_filename, sizeof index_filename,
"block%zu.tar%s_%llu", sm.block,
get_filter_extensions(filter),
(unsigned long long) size);
if (sh->typeflag[0] != '5' && !should_rsync)
mytar_set_linkname(indextar, index_filename);
}
if (should_rsync)
{
assert(rsync_signature == 0);
rsync_signature = rsync_signature_new();
}
else
mytar_write_header(indextar);
sm.data_read = 0;
if (sm.filedata_left > 0)
{
if (command_line.debug > 1)
fprintf(stderr, "index_from_tar: Going to skip %llu bytes\n", sm.filedata_left);
sm.state = IN_DATA;
}
else
{
sm.state = IN_HEADER;
advance_block();
}
}
return amount_read;
}