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-rw-r--r--library/vendor/JShrink/LICENSE29
-rw-r--r--library/vendor/JShrink/Minifier.php613
-rw-r--r--library/vendor/JShrink/SOURCE7
3 files changed, 649 insertions, 0 deletions
diff --git a/library/vendor/JShrink/LICENSE b/library/vendor/JShrink/LICENSE
new file mode 100644
index 0000000..c6597d8
--- /dev/null
+++ b/library/vendor/JShrink/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2009, Robert Hafner
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/library/vendor/JShrink/Minifier.php b/library/vendor/JShrink/Minifier.php
new file mode 100644
index 0000000..fad43d2
--- /dev/null
+++ b/library/vendor/JShrink/Minifier.php
@@ -0,0 +1,613 @@
+<?php
+/*
+ * This file is part of the JShrink package.
+ *
+ * (c) Robert Hafner <tedivm@tedivm.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * JShrink
+ *
+ *
+ * @package JShrink
+ * @author Robert Hafner <tedivm@tedivm.com>
+ */
+
+namespace JShrink;
+
+/**
+ * Minifier
+ *
+ * Usage - Minifier::minify($js);
+ * Usage - Minifier::minify($js, $options);
+ * Usage - Minifier::minify($js, array('flaggedComments' => false));
+ *
+ * @package JShrink
+ * @author Robert Hafner <tedivm@tedivm.com>
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+class Minifier
+{
+ /**
+ * The input javascript to be minified.
+ *
+ * @var string
+ */
+ protected $input;
+
+ /**
+ * Length of input javascript.
+ *
+ * @var int
+ */
+ protected $len = 0;
+
+ /**
+ * The location of the character (in the input string) that is next to be
+ * processed.
+ *
+ * @var int
+ */
+ protected $index = 0;
+
+ /**
+ * The first of the characters currently being looked at.
+ *
+ * @var string
+ */
+ protected $a = '';
+
+ /**
+ * The next character being looked at (after a);
+ *
+ * @var string
+ */
+ protected $b = '';
+
+ /**
+ * This character is only active when certain look ahead actions take place.
+ *
+ * @var string
+ */
+ protected $c;
+
+ /**
+ * Contains the options for the current minification process.
+ *
+ * @var array
+ */
+ protected $options;
+
+ /**
+ * These characters are used to define strings.
+ */
+ protected $stringDelimiters = ['\'' => true, '"' => true, '`' => true];
+
+ /**
+ * Contains the default options for minification. This array is merged with
+ * the one passed in by the user to create the request specific set of
+ * options (stored in the $options attribute).
+ *
+ * @var array
+ */
+ protected static $defaultOptions = ['flaggedComments' => true];
+
+ /**
+ * Contains lock ids which are used to replace certain code patterns and
+ * prevent them from being minified
+ *
+ * @var array
+ */
+ protected $locks = [];
+
+ /**
+ * Takes a string containing javascript and removes unneeded characters in
+ * order to shrink the code without altering it's functionality.
+ *
+ * @param string $js The raw javascript to be minified
+ * @param array $options Various runtime options in an associative array
+ * @throws \Exception
+ * @return bool|string
+ */
+ public static function minify($js, $options = [])
+ {
+ try {
+ ob_start();
+
+ $jshrink = new Minifier();
+ $js = $jshrink->lock($js);
+ $jshrink->minifyDirectToOutput($js, $options);
+
+ // Sometimes there's a leading new line, so we trim that out here.
+ $js = ltrim(ob_get_clean());
+ $js = $jshrink->unlock($js);
+ unset($jshrink);
+
+ return $js;
+ } catch (\Exception $e) {
+ if (isset($jshrink)) {
+ // Since the breakdownScript function probably wasn't finished
+ // we clean it out before discarding it.
+ $jshrink->clean();
+ unset($jshrink);
+ }
+
+ // without this call things get weird, with partially outputted js.
+ ob_end_clean();
+ throw $e;
+ }
+ }
+
+ /**
+ * Processes a javascript string and outputs only the required characters,
+ * stripping out all unneeded characters.
+ *
+ * @param string $js The raw javascript to be minified
+ * @param array $options Various runtime options in an associative array
+ */
+ protected function minifyDirectToOutput($js, $options)
+ {
+ $this->initialize($js, $options);
+ $this->loop();
+ $this->clean();
+ }
+
+ /**
+ * Initializes internal variables, normalizes new lines,
+ *
+ * @param string $js The raw javascript to be minified
+ * @param array $options Various runtime options in an associative array
+ */
+ protected function initialize($js, $options)
+ {
+ $this->options = array_merge(static::$defaultOptions, $options);
+ $this->input = str_replace(["\r\n", '/**/', "\r"], ["\n", "", "\n"], $js);
+
+ // We add a newline to the end of the script to make it easier to deal
+ // with comments at the bottom of the script- this prevents the unclosed
+ // comment error that can otherwise occur.
+ $this->input .= PHP_EOL;
+
+ // save input length to skip calculation every time
+ $this->len = strlen($this->input);
+
+ // Populate "a" with a new line, "b" with the first character, before
+ // entering the loop
+ $this->a = "\n";
+ $this->b = $this->getReal();
+ }
+
+ /**
+ * Characters that can't stand alone preserve the newline.
+ *
+ * @var array
+ */
+ protected $noNewLineCharacters = [
+ '(' => true,
+ '-' => true,
+ '+' => true,
+ '[' => true,
+ '@' => true];
+
+ /**
+ * The primary action occurs here. This function loops through the input string,
+ * outputting anything that's relevant and discarding anything that is not.
+ */
+ protected function loop()
+ {
+ while ($this->a !== false && !is_null($this->a) && $this->a !== '') {
+ switch ($this->a) {
+ // new lines
+ case "\n":
+ // if the next line is something that can't stand alone preserve the newline
+ if ($this->b !== false && isset($this->noNewLineCharacters[$this->b])) {
+ echo $this->a;
+ $this->saveString();
+ break;
+ }
+
+ // if B is a space we skip the rest of the switch block and go down to the
+ // string/regex check below, resetting $this->b with getReal
+ if ($this->b === ' ') {
+ break;
+ }
+
+ // otherwise we treat the newline like a space
+
+ // no break
+ case ' ':
+ if (static::isAlphaNumeric($this->b)) {
+ echo $this->a;
+ }
+
+ $this->saveString();
+ break;
+
+ default:
+ switch ($this->b) {
+ case "\n":
+ if (strpos('}])+-"\'', $this->a) !== false) {
+ echo $this->a;
+ $this->saveString();
+ break;
+ } else {
+ if (static::isAlphaNumeric($this->a)) {
+ echo $this->a;
+ $this->saveString();
+ }
+ }
+ break;
+
+ case ' ':
+ if (!static::isAlphaNumeric($this->a)) {
+ break;
+ }
+
+ // no break
+ default:
+ // check for some regex that breaks stuff
+ if ($this->a === '/' && ($this->b === '\'' || $this->b === '"')) {
+ $this->saveRegex();
+ continue 3;
+ }
+
+ echo $this->a;
+ $this->saveString();
+ break;
+ }
+ }
+
+ // do reg check of doom
+ $this->b = $this->getReal();
+
+ if (($this->b == '/' && strpos('(,=:[!&|?', $this->a) !== false)) {
+ $this->saveRegex();
+ }
+ }
+ }
+
+ /**
+ * Resets attributes that do not need to be stored between requests so that
+ * the next request is ready to go. Another reason for this is to make sure
+ * the variables are cleared and are not taking up memory.
+ */
+ protected function clean()
+ {
+ unset($this->input);
+ $this->len = 0;
+ $this->index = 0;
+ $this->a = $this->b = '';
+ unset($this->c);
+ unset($this->options);
+ }
+
+ /**
+ * Returns the next string for processing based off of the current index.
+ *
+ * @return string
+ */
+ protected function getChar()
+ {
+ // Check to see if we had anything in the look ahead buffer and use that.
+ if (isset($this->c)) {
+ $char = $this->c;
+ unset($this->c);
+ } else {
+ // Otherwise we start pulling from the input.
+ $char = $this->index < $this->len ? $this->input[$this->index] : false;
+
+ // If the next character doesn't exist return false.
+ if (isset($char) && $char === false) {
+ return false;
+ }
+
+ // Otherwise increment the pointer and use this char.
+ $this->index++;
+ }
+
+ // Normalize all whitespace except for the newline character into a
+ // standard space.
+ if ($char !== "\n" && $char < "\x20") {
+ return ' ';
+ }
+
+ return $char;
+ }
+
+ /**
+ * This function gets the next "real" character. It is essentially a wrapper
+ * around the getChar function that skips comments. This has significant
+ * performance benefits as the skipping is done using native functions (ie,
+ * c code) rather than in script php.
+ *
+ *
+ * @return string Next 'real' character to be processed.
+ * @throws \RuntimeException
+ */
+ protected function getReal()
+ {
+ $startIndex = $this->index;
+ $char = $this->getChar();
+
+ // Check to see if we're potentially in a comment
+ if ($char !== '/') {
+ return $char;
+ }
+
+ $this->c = $this->getChar();
+
+ if ($this->c === '/') {
+ $this->processOneLineComments($startIndex);
+
+ return $this->getReal();
+ } elseif ($this->c === '*') {
+ $this->processMultiLineComments($startIndex);
+
+ return $this->getReal();
+ }
+
+ return $char;
+ }
+
+ /**
+ * Removed one line comments, with the exception of some very specific types of
+ * conditional comments.
+ *
+ * @param int $startIndex The index point where "getReal" function started
+ * @return void
+ */
+ protected function processOneLineComments($startIndex)
+ {
+ $thirdCommentString = $this->index < $this->len ? $this->input[$this->index] : false;
+
+ // kill rest of line
+ $this->getNext("\n");
+
+ unset($this->c);
+
+ if ($thirdCommentString == '@') {
+ $endPoint = $this->index - $startIndex;
+ $this->c = "\n" . substr($this->input, $startIndex, $endPoint);
+ }
+ }
+
+ /**
+ * Skips multiline comments where appropriate, and includes them where needed.
+ * Conditional comments and "license" style blocks are preserved.
+ *
+ * @param int $startIndex The index point where "getReal" function started
+ * @return void
+ * @throws \RuntimeException Unclosed comments will throw an error
+ */
+ protected function processMultiLineComments($startIndex)
+ {
+ $this->getChar(); // current C
+ $thirdCommentString = $this->getChar();
+
+ // kill everything up to the next */ if it's there
+ if ($this->getNext('*/')) {
+ $this->getChar(); // get *
+ $this->getChar(); // get /
+ $char = $this->getChar(); // get next real character
+
+ // Now we reinsert conditional comments and YUI-style licensing comments
+ if (($this->options['flaggedComments'] && $thirdCommentString === '!')
+ || ($thirdCommentString === '@')) {
+
+ // If conditional comments or flagged comments are not the first thing in the script
+ // we need to echo a and fill it with a space before moving on.
+ if ($startIndex > 0) {
+ echo $this->a;
+ $this->a = " ";
+
+ // If the comment started on a new line we let it stay on the new line
+ if ($this->input[($startIndex - 1)] === "\n") {
+ echo "\n";
+ }
+ }
+
+ $endPoint = ($this->index - 1) - $startIndex;
+ echo substr($this->input, $startIndex, $endPoint);
+
+ $this->c = $char;
+
+ return;
+ }
+ } else {
+ $char = false;
+ }
+
+ if ($char === false) {
+ throw new \RuntimeException('Unclosed multiline comment at position: ' . ($this->index - 2));
+ }
+
+ // if we're here c is part of the comment and therefore tossed
+ $this->c = $char;
+ }
+
+ /**
+ * Pushes the index ahead to the next instance of the supplied string. If it
+ * is found the first character of the string is returned and the index is set
+ * to it's position.
+ *
+ * @param string $string
+ * @return string|false Returns the first character of the string or false.
+ */
+ protected function getNext($string)
+ {
+ // Find the next occurrence of "string" after the current position.
+ $pos = strpos($this->input, $string, $this->index);
+
+ // If it's not there return false.
+ if ($pos === false) {
+ return false;
+ }
+
+ // Adjust position of index to jump ahead to the asked for string
+ $this->index = $pos;
+
+ // Return the first character of that string.
+ return $this->index < $this->len ? $this->input[$this->index] : false;
+ }
+
+ /**
+ * When a javascript string is detected this function crawls for the end of
+ * it and saves the whole string.
+ *
+ * @throws \RuntimeException Unclosed strings will throw an error
+ */
+ protected function saveString()
+ {
+ $startpos = $this->index;
+
+ // saveString is always called after a gets cleared, so we push b into
+ // that spot.
+ $this->a = $this->b;
+
+ // If this isn't a string we don't need to do anything.
+ if (!isset($this->stringDelimiters[$this->a])) {
+ return;
+ }
+
+ // String type is the quote used, " or '
+ $stringType = $this->a;
+
+ // Echo out that starting quote
+ echo $this->a;
+
+ // Loop until the string is done
+ // Grab the very next character and load it into a
+ while (($this->a = $this->getChar()) !== false) {
+ switch ($this->a) {
+
+ // If the string opener (single or double quote) is used
+ // output it and break out of the while loop-
+ // The string is finished!
+ case $stringType:
+ break 2;
+
+ // New lines in strings without line delimiters are bad- actual
+ // new lines will be represented by the string \n and not the actual
+ // character, so those will be treated just fine using the switch
+ // block below.
+ case "\n":
+ if ($stringType === '`') {
+ echo $this->a;
+ } else {
+ throw new \RuntimeException('Unclosed string at position: ' . $startpos);
+ }
+ break;
+
+ // Escaped characters get picked up here. If it's an escaped new line it's not really needed
+ case '\\':
+
+ // a is a slash. We want to keep it, and the next character,
+ // unless it's a new line. New lines as actual strings will be
+ // preserved, but escaped new lines should be reduced.
+ $this->b = $this->getChar();
+
+ // If b is a new line we discard a and b and restart the loop.
+ if ($this->b === "\n") {
+ break;
+ }
+
+ // echo out the escaped character and restart the loop.
+ echo $this->a . $this->b;
+ break;
+
+
+ // Since we're not dealing with any special cases we simply
+ // output the character and continue our loop.
+ default:
+ echo $this->a;
+ }
+ }
+ }
+
+ /**
+ * When a regular expression is detected this function crawls for the end of
+ * it and saves the whole regex.
+ *
+ * @throws \RuntimeException Unclosed regex will throw an error
+ */
+ protected function saveRegex()
+ {
+ echo $this->a . $this->b;
+
+ while (($this->a = $this->getChar()) !== false) {
+ if ($this->a === '/') {
+ break;
+ }
+
+ if ($this->a === '\\') {
+ echo $this->a;
+ $this->a = $this->getChar();
+ }
+
+ if ($this->a === "\n") {
+ throw new \RuntimeException('Unclosed regex pattern at position: ' . $this->index);
+ }
+
+ echo $this->a;
+ }
+ $this->b = $this->getReal();
+ }
+
+ /**
+ * Checks to see if a character is alphanumeric.
+ *
+ * @param string $char Just one character
+ * @return bool
+ */
+ protected static function isAlphaNumeric($char)
+ {
+ return preg_match('/^[\w\$\pL]$/', $char) === 1 || $char == '/';
+ }
+
+ /**
+ * Replace patterns in the given string and store the replacement
+ *
+ * @param string $js The string to lock
+ * @return bool
+ */
+ protected function lock($js)
+ {
+ /* lock things like <code>"asd" + ++x;</code> */
+ $lock = '"LOCK---' . crc32(time()) . '"';
+
+ $matches = [];
+ preg_match('/([+-])(\s+)([+-])/S', $js, $matches);
+ if (empty($matches)) {
+ return $js;
+ }
+
+ $this->locks[$lock] = $matches[2];
+
+ $js = preg_replace('/([+-])\s+([+-])/S', "$1{$lock}$2", $js);
+ /* -- */
+
+ return $js;
+ }
+
+ /**
+ * Replace "locks" with the original characters
+ *
+ * @param string $js The string to unlock
+ * @return bool
+ */
+ protected function unlock($js)
+ {
+ if (empty($this->locks)) {
+ return $js;
+ }
+
+ foreach ($this->locks as $lock => $replacement) {
+ $js = str_replace($lock, $replacement, $js);
+ }
+
+ return $js;
+ }
+}
diff --git a/library/vendor/JShrink/SOURCE b/library/vendor/JShrink/SOURCE
new file mode 100644
index 0000000..00ccc58
--- /dev/null
+++ b/library/vendor/JShrink/SOURCE
@@ -0,0 +1,7 @@
+#!/bin/bash
+set -eux
+VERSION=1.4.0
+curl -LsS https://github.com/tedious/JShrink/archive/v"$VERSION".tar.gz -o /tmp/JShrink.tar.gz
+tar xzf /tmp/JShrink.tar.gz --strip-components 1 JShrink-"$VERSION"/LICENSE
+tar xzf /tmp/JShrink.tar.gz --strip-components 3 JShrink-"$VERSION"/src/JShrink/Minifier.php
+rm /tmp/JShrink.tar.gz
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