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David Stone
2024-11-30 18:24:12 -07:00
commit e8f7955c1c
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114
dependencies/amphp/hpack/tools/compress.php vendored Normal file
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<?php
namespace WP_Ultimo\Dependencies;
/**
* The MIT License (MIT).
*
* Copyright (c) 2017 Christian Lück
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// Taken from https://github.com/leproxy/leproxy/blob/e2ca7917c17ac8b853800f5b390297a2a1525cf7/compile.php
$small = '';
$all = \token_get_all(\file_get_contents($argv[1]));
// search next non-whitespace/non-comment token
$next = function ($i) use(&$all) {
for ($i = $i + 1; !isset($all[$i]) || \is_array($all[$i]) && ($all[$i][0] === \T_COMMENT || $all[$i][0] === \T_DOC_COMMENT || $all[$i][0] === \T_WHITESPACE); ++$i) {
}
return $i;
};
// search previous non-whitespace/non-comment token
$prev = function ($i) use(&$all) {
for ($i = $i - 1; $i >= 0 && (!isset($all[$i]) || \is_array($all[$i]) && ($all[$i][0] === \T_COMMENT || $all[$i][0] === \T_DOC_COMMENT || $all[$i][0] === \T_WHITESPACE)); --$i) {
}
return $i;
};
$first = \true;
foreach ($all as $i => $token) {
if (\is_array($token) && ($token[0] === \T_COMMENT || $token[0] === \T_DOC_COMMENT)) {
// remove all comments except first
if ($first === \true) {
$first = \false;
continue;
}
unset($all[$i]);
} elseif (\is_array($token) && $token[0] === \T_PUBLIC) {
// get next non-whitespace token after `public` visibility
$token = $all[$next($i)];
if (\is_array($token) && $token[0] === \T_VARIABLE) {
// use shorter variable notation `public $a` => `var $a`
$all[$i] = [\T_VAR, 'var'];
} else {
// remove unneeded public identifier `public static function a()` => `static function a()`
unset($all[$i]);
}
} elseif (\is_array($token) && $token[0] === \T_LNUMBER) {
// Use shorter integer notation `0x0F` => `15` and `011` => `9`.
// Technically, hex codes may be shorter for very large ints, but adding
// another 2 leading chars is rarely worth it.
// Optimizing floats is not really worth it, as they have many special
// cases, such as e-notation and we would lose types for `0.0` => `0`.
$all[$i][1] = (string) \intval($token[1], 0);
} elseif (\is_array($token) && $token[0] === \T_NEW) {
// remove unneeded parenthesis for constructors without args `new a();` => `new a;`
// jump over next token (class name), then next must be open parenthesis, followed by closing
$open = $next($next($i));
$close = $next($open);
if ($all[$open] === '(' && $all[$close] === ')') {
unset($all[$open], $all[$close]);
}
} elseif (\is_array($token) && $token[0] === \T_STRING) {
// replace certain functions with their shorter alias function name
// http://php.net/manual/en/aliases.php
static $replace = ['implode' => 'join', 'fwrite' => 'fputs', 'array_key_exists' => 'key_exists', 'current' => 'pos'];
// check this has a replacement and "looks like" a function call
// this works on a number of assumptions, such as not being aliased/namespaced
if (isset($replace[$token[1]])) {
$p = $all[$prev($i)];
if ($all[$next($i)] === '(' && (!\is_array($p) || !\in_array($p[0], [\T_FUNCTION, \T_OBJECT_OPERATOR, \T_DOUBLE_COLON, \T_NEW]))) {
$all[$i][1] = $replace[$all[$i][1]];
}
}
} elseif (\is_array($token) && $token[0] === \T_EXIT) {
// replace `exit` with shorter alias `die`
// it's a language construct, not a function (see above)
$all[$i][1] = 'die';
} elseif (\is_array($token) && $token[0] === \T_RETURN) {
// replace `return null;` with `return;`
$t = $next($i);
if (\is_array($all[$t]) && $all[$t][0] === \T_STRING && $all[$t][1] === 'null' && $all[$next($t)] === ';') {
unset($all[$t]);
}
}
}
$all = \array_values($all);
foreach ($all as $i => $token) {
if (\is_array($token) && $token[0] === \T_WHITESPACE) {
if (\strpos($token[1], "\n") !== \false) {
$token = \strpos("()[]<>=+-*/%|,.:?!'\"\n", \substr($small, -1)) === \false ? "\n" : '';
} else {
$last = \substr($small, -1);
$next = isset($all[$i + 1]) ? \substr(\is_array($all[$i + 1]) ? $all[$i + 1][1] : $all[$i + 1], 0, 1) : ' ';
$token = \strpos('()[]{}<>;=+-*/%&|,.:?!@\'"' . "\r\n", $last) !== \false || \strpos('()[]{}<>;=+-*/%&|,.:?!@\'"' . '\\$', $next) !== \false ? '' : ' ';
}
}
$small .= isset($token[1]) ? $token[1] : $token;
}
\file_put_contents($argv[1], $small);