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|
--TEST--
zstd_compress_dict(): compress level
--SKIPIF--
<?php
if (LIBZSTD_VERSION_NUMBER < 10304) die("skip needs libzstd 1.3.4");
?>
--FILE--
<?php
include(dirname(__FILE__) . '/data.inc');
$dictionary = file_get_contents(dirname(__FILE__) . '/data.dic');
function check_compress($data, $dictionary, $level)
{
$output = (string)zstd_compress_dict($data, $dictionary, $level);
echo $level, ' -- ', strlen($dictionary), ' -- ', strlen($output), ' -- ',
var_export(zstd_uncompress_dict($output, $dictionary) === $data, true), PHP_EOL;
}
echo "*** Data size ***", PHP_EOL;
echo strlen($data), PHP_EOL;
echo "*** Compression Level ***", PHP_EOL;
for (
$level = ZSTD_COMPRESS_LEVEL_MIN;
$level <= ZSTD_COMPRESS_LEVEL_MAX;
$level++
) {
check_compress($data, $dictionary, $level);
}
echo "*** Faster compression Level ***", PHP_EOL;
for ($level = -1; $level >= -5; $level--) {
check_compress($data, $dictionary, $level);
}
echo "*** Invalid Compression Level ***", PHP_EOL;
check_compress($data, $dictionary, 100);
?>
===Done===
--EXPECTF--
*** Data size ***
3547
*** Compression Level ***
1 -- 142 -- 1%d -- true
2 -- 142 -- 1%d -- true
3 -- 142 -- 1%d -- true
4 -- 142 -- 1%d -- true
5 -- 142 -- 1%d -- true
6 -- 142 -- 1%d -- true
7 -- 142 -- 1%d -- true
8 -- 142 -- 1%d -- true
9 -- 142 -- 1%d -- true
10 -- 142 -- 1%d -- true
11 -- 142 -- 1%d -- true
12 -- 142 -- 1%d -- true
13 -- 142 -- 1%d -- true
14 -- 142 -- 1%d -- true
15 -- 142 -- 1%d -- true
16 -- 142 -- 1%d -- true
17 -- 142 -- 1%d -- true
18 -- 142 -- 1%d -- true
19 -- 142 -- 1%d -- true
20 -- 142 -- 1%d -- true
21 -- 142 -- 1%d -- true
22 -- 142 -- 1%d -- true
*** Faster compression Level ***
-1 -- 142 -- %d -- true
-2 -- 142 -- %d -- true
-3 -- 142 -- %d -- true
-4 -- 142 -- %d -- true
-5 -- 142 -- %d -- true
*** Invalid Compression Level ***
Warning: zstd_compress_dict(): compression level (100) must be within 1..22 or smaller then 0 in %s on line %d
100 -- 142 -- 0 --
Warning: zstd_uncompress_dict(): it was not compressed by zstd in %s
false
===Done===
|
