mirror_html/h5ai
1
0
Fork 0
mirror of https://github.com/lrsjng/h5ai.git synced 2025-03-14 01:19:49 +01:00
Code Issues Projects Releases Wiki Activity

Clean code.

Browse Source
This commit is contained in:
Lars Jung 2015-05-20 22:13:04 +02:00
parent 6c9d480736
commit 65d8aab429
1 changed files with 17 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/_h5ai/private/php/ext/class-archive.php
View File

@ -2,6 +2,8 @@
class Archive {
const NULL_BYTE = "\0";
private static $SEGMENT_SIZE = 16777216; // 1024 * 1024 * 16 = 16MiB
private static $TAR_PASSTHRU_CMD = 'cd [ROOTDIR] && tar --no-recursion -c -- [DIRS] [FILES]';
private static $ZIP_PASSTHRU_CMD = 'cd [ROOTDIR] && zip - -- [FILES]';
@ -93,7 +95,7 @@ class Archive {
$this->print_file($real_file);
if ($size % 512 != 0) {
echo str_repeat("\0", 512 - ($size % 512));
echo str_repeat(Archive::NULL_BYTE, 512 - ($size % 512));
}
}
@ -109,25 +111,25 @@ class Archive {
}
$header =
str_pad($name, 100, "\0") // filename [100]
. "0000755\0" // file mode [8]
. "0000000\0" // uid [8]
. "0000000\0" // gid [8]
. str_pad(decoct($size), 11, "0", STR_PAD_LEFT) . "\0" // file size [12]
. str_pad(decoct($mtime), 11, "0", STR_PAD_LEFT) . "\0" // file modification time [12]
. " " // checksum [8]
str_pad($name, 100, Archive::NULL_BYTE) // filename [100]
. '0000755' . Archive::NULL_BYTE // file mode [8]
. '0000000' . Archive::NULL_BYTE // uid [8]
. '0000000' . Archive::NULL_BYTE // gid [8]
. str_pad(decoct($size), 11, '0', STR_PAD_LEFT) . Archive::NULL_BYTE // file size [12]
. str_pad(decoct($mtime), 11, '0', STR_PAD_LEFT) . Archive::NULL_BYTE // file modification time [12]
. ' ' // checksum [8]
. str_pad($type, 1) // file type [1]
. str_repeat("\0", 100) // linkname [100]
. "ustar\0" // magic [6]
. "00" // version [2]
. str_repeat("\0", 80) // uname, gname, defmajor, devminor [32 + 32 + 8 + 8]
. str_pad($prefix, 155, "\0") // filename [155]
. str_repeat("\0", 12); // fill [12]
. str_repeat(Archive::NULL_BYTE, 100) // linkname [100]
. 'ustar' . Archive::NULL_BYTE // magic [6]
. '00' // version [2]
. str_repeat(Archive::NULL_BYTE, 80) // uname, gname, defmajor, devminor [32 + 32 + 8 + 8]
. str_pad($prefix, 155, Archive::NULL_BYTE) // filename [155]
. str_repeat(Archive::NULL_BYTE, 12); // fill [12]
assert(strlen($header) === 512);
// checksum
$checksum = array_sum(array_map('ord', str_split($header)));
$checksum = str_pad(decoct($checksum), 6, "0", STR_PAD_LEFT) . "\0 ";
$checksum = str_pad(decoct($checksum), 6, '0', STR_PAD_LEFT) . Archive::NULL_BYTE . ' ';
$header = substr_replace($header, $checksum, 148, 8);
return $header;