forked from joomla/Component-Builder
Llewellyn van der Merwe
f15b67cff1
Resolved gh-146 compiler error on joined db in dinamic get thanks to @mwweb & @ro-ot Resolved gh-147 by adding the sort of fields back into the save method Resolved gh-144 to ensure that the published tab (fields overwriting and adding) option is available again. Resolved gh-145 by moving the subforms to their own tab in dynamic get view Converted all repeatable fields to subform fields in Joomla component view Moved 9 subforms and other fields to their own table and view (decopuling them fom Joomla component view), that means we added 9 more views and tables to JCB Added all the ajax for buttons and display views to Joomla component view Added tmp scripts all across the new areas with subforms to ensure all repeatable fields are converted. Will be removed in v2.7.0 Added synced copy, change state and delete in Joomla components view in relation to all tables linked to it (same as with admin views)
452 lines
32 KiB
PHP
452 lines
32 KiB
PHP
<?php
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/*--------------------------------------------------------------------------------------------------------| www.vdm.io |------/
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__ __ _ _____ _ _ __ __ _ _ _
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\ \ / / | | | __ \ | | | | | \/ | | | | | | |
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\ \ / /_ _ ___| |_ | | | | _____ _____| | ___ _ __ _ __ ___ ___ _ __ | |_ | \ / | ___| |_| |__ ___ __| |
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\ \/ / _` / __| __| | | | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
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\ / (_| \__ \ |_ | |__| | __/\ V / __/ | (_) | |_) | | | | | | __/ | | | |_ | | | | __/ |_| | | | (_) | (_| |
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\/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_| |_|\___|\__|_| |_|\___/ \__,_|
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/-------------------------------------------------------------------------------------------------------------------------------/
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@version 2.5.9
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@build 26th October, 2017
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@created 30th April, 2015
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@package Component Builder
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@subpackage js.php
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@author Llewellyn van der Merwe <http://vdm.bz/component-builder>
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@copyright Copyright (C) 2015. All Rights Reserved
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@license GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
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Builds Complex Joomla Components
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/-----------------------------------------------------------------------------------------------------------------------------*/
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// No direct access to this file
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defined('_JEXEC') or die('Restricted access');
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require_once JPATH_ADMINISTRATOR.'/components/com_componentbuilder/helpers/minify.php';
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/**
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* JavaScript minifier.
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*
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* Please report bugs on https://github.com/matthiasmullie/minify/issues
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*
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* @author Matthias Mullie <minify@mullie.eu>
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* @author Tijs Verkoyen <minify@verkoyen.eu>
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*
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* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved.
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* @license MIT License
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*/
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class JS extends Minify
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{
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/**
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* Var-matching regex based on http://stackoverflow.com/a/9337047/802993
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*
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* Note that regular expressions using that bit must have the PCRE_UTF8
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* pattern modifier (/u) set.
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*
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* @var string
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*/
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const REGEX_VARIABLE = 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|
|
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/**
|
|
* Full list of JavaScript reserved words.
|
|
* Will be loaded from /data/js/keywords_reserved.txt
|
|
*
|
|
* @see https://mathiasbynens.be/notes/reserved-keywords
|
|
* @var string[]
|
|
*/
|
|
protected $keywordsReserved = array();
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|
|
|
/**
|
|
* List of JavaScript reserved words that accept a <variable, value, ...>
|
|
* after them. Some end of lines are not the end of a statement, like with
|
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* these keywords.
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*
|
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* E.g.: we shouldn't insert a ; after this else
|
|
* else
|
|
* console.log('this is quite fine')
|
|
*
|
|
* Will be loaded from /data/js/keywords_before.txt
|
|
*
|
|
* @var string[]
|
|
*/
|
|
protected $keywordsBefore = array();
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|
|
|
/**
|
|
* List of JavaScript reserved words that accept a <variable, value, ...>
|
|
* before them. Some end of lines are not the end of a statement, like when
|
|
* continued by one of these keywords on the newline.
|
|
*
|
|
* E.g.: we shouldn't insert a ; before this instanceof
|
|
* variable
|
|
* instanceof String
|
|
*
|
|
* Will be loaded from /data/js/keywords_after.txt
|
|
*
|
|
* @var string[]
|
|
*/
|
|
protected $keywordsAfter = array();
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|
|
/**
|
|
* List of JavaScript operators that accept a <variable, value, ...> after
|
|
* them. Some end of lines are not the end of a statement, like with these
|
|
* operators.
|
|
|
|
*
|
|
* Note: Most operators are fine, we've only removed !, ++ and --.
|
|
* There can't be a newline separating ! and whatever it is negating.
|
|
* ++ & -- have to be joined with the value they're in-/decrementing.
|
|
*
|
|
* Will be loaded from /data/js/operators_before.txt
|
|
*
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
|
|
* @var string[]
|
|
*/
|
|
protected $operatorsBefore = array();
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|
|
|
/**
|
|
* List of JavaScript operators that accept a <variable, value, ...> before
|
|
* them. Some end of lines are not the end of a statement, like when
|
|
* continued by one of these operators on the newline.
|
|
*
|
|
* Note: Most operators are fine, we've only removed ), ], ++ and --.
|
|
* ++ & -- have to be joined with the value they're in-/decrementing.
|
|
* ) & ] are "special" in that they have lots or usecases. () for example
|
|
* is used for function calls, for grouping, in if () and for (), ...
|
|
*
|
|
* Will be loaded from /data/js/operators_after.txt
|
|
*
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
|
|
* @var string[]
|
|
*/
|
|
protected $operatorsAfter = array();
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|
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/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function __construct()
|
|
{
|
|
call_user_func_array(array('parent', '__construct'), func_get_args());
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|
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$dataDir = JPATH_ADMINISTRATOR.'/components/com_componentbuilder/helpers/';
|
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$options = FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES;
|
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$this->keywordsReserved = file($dataDir.'keywords_reserved.txt', $options);
|
|
$this->keywordsBefore = file($dataDir.'keywords_before.txt', $options);
|
|
$this->keywordsAfter = file($dataDir.'keywords_after.txt', $options);
|
|
$this->operatorsBefore = file($dataDir.'operators_before.txt', $options);
|
|
$this->operatorsAfter = file($dataDir.'operators_after.txt', $options);
|
|
}
|
|
|
|
/**
|
|
* Minify the data.
|
|
* Perform JS optimizations.
|
|
*
|
|
* @param string[optional] $path Path to write the data to.
|
|
* @return string The minified data.
|
|
*/
|
|
public function execute($path = null)
|
|
{
|
|
$content = '';
|
|
|
|
// loop files
|
|
foreach ($this->data as $source => $js) {
|
|
/*
|
|
* Combine js: separating the scripts by a ;
|
|
* I'm also adding a newline: it will be eaten when whitespace is
|
|
* stripped, but we need to make sure we're not just appending
|
|
* a new script right after a previous script that ended with a
|
|
* singe-line comment on the last line (in which case it would also
|
|
* be seen as part of that comment)
|
|
*/
|
|
$content .= $js."\n;";
|
|
}
|
|
|
|
/*
|
|
* Let's first take out strings, comments and regular expressions.
|
|
* All of these can contain JS code-like characters, and we should make
|
|
* sure any further magic ignores anything inside of these.
|
|
*
|
|
* Consider this example, where we should not strip any whitespace:
|
|
* var str = "a test";
|
|
*
|
|
* Comments will be removed altogether, strings and regular expressions
|
|
* will be replaced by placeholder text, which we'll restore later.
|
|
*/
|
|
$this->extractStrings('\'"`');
|
|
$this->stripComments();
|
|
$this->extractRegex();
|
|
$content = $this->replace($content);
|
|
|
|
$content = $this->stripWhitespace($content);
|
|
$content = $this->propertyNotation($content);
|
|
$content = $this->shortenBools($content);
|
|
|
|
/*
|
|
* Earlier, we extracted strings & regular expressions and replaced them
|
|
* with placeholder text. This will restore them.
|
|
*/
|
|
$content = $this->restoreExtractedData($content);
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Strip comments from source code.
|
|
*/
|
|
protected function stripComments()
|
|
{
|
|
// single-line comments
|
|
$this->registerPattern('/\/\/.*$/m', '');
|
|
|
|
// multi-line comments
|
|
$this->registerPattern('/\/\*.*?\*\//s', '');
|
|
}
|
|
|
|
/**
|
|
* JS can have /-delimited regular expressions, like: /ab+c/.match(string)
|
|
*
|
|
* The content inside the regex can contain characters that may be confused
|
|
* for JS code: e.g. it could contain whitespace it needs to match & we
|
|
* don't want to strip whitespace in there.
|
|
*
|
|
* The regex can be pretty simple: we don't have to care about comments,
|
|
* (which also use slashes) because stripComments() will have stripped those
|
|
* already.
|
|
*
|
|
* This method will replace all string content with simple REGEX#
|
|
* placeholder text, so we've rid all regular expressions from characters
|
|
* that may be misinterpreted. Original regex content will be saved in
|
|
* $this->extracted and after doing all other minifying, we can restore the
|
|
* original content via restoreRegex()
|
|
*/
|
|
protected function extractRegex()
|
|
{
|
|
// PHP only supports $this inside anonymous functions since 5.4
|
|
$minifier = $this;
|
|
$callback = function ($match) use ($minifier) {
|
|
$count = count($minifier->extracted);
|
|
$placeholder = '/'.$count.'/';
|
|
$minifier->extracted[$placeholder] = '/'.$match[1].'/';
|
|
|
|
return $placeholder;
|
|
};
|
|
|
|
// it's a regex if we can find an opening (not preceded by variable,
|
|
// value or similar) & (non-escaped) closing /,
|
|
$before = $this->getOperatorsForRegex($this->operatorsBefore, '/');
|
|
$this->registerPattern('/^\s*+\K\/(.*?(?<!\\\\)(\\\\\\\\)*+)\//', $callback);
|
|
$this->registerPattern('/(?:'.implode('|', $before).')\s*+\K\/(.*?(?<!\\\\)(\\\\\\\\)*+)\//', $callback);
|
|
}
|
|
|
|
/**
|
|
* Strip whitespace.
|
|
*
|
|
* We won't strip *all* whitespace, but as much as possible. The thing that
|
|
* we'll preserve are newlines we're unsure about.
|
|
* JavaScript doesn't require statements to be terminated with a semicolon.
|
|
* It will automatically fix missing semicolons with ASI (automatic semi-
|
|
* colon insertion) at the end of line causing errors (without semicolon.)
|
|
*
|
|
* Because it's sometimes hard to tell if a newline is part of a statement
|
|
* that should be terminated or not, we'll just leave some of them alone.
|
|
*
|
|
* @param string $content The content to strip the whitespace for.
|
|
* @return string
|
|
*/
|
|
protected function stripWhitespace($content)
|
|
{
|
|
// uniform line endings, make them all line feed
|
|
$content = str_replace(array("\r\n", "\r"), "\n", $content);
|
|
|
|
// collapse all non-line feed whitespace into a single space
|
|
$content = preg_replace('/[^\S\n]+/', ' ', $content);
|
|
|
|
// strip leading & trailing whitespace
|
|
$content = str_replace(array(" \n", "\n "), "\n", $content);
|
|
|
|
// collapse consecutive line feeds into just 1
|
|
$content = preg_replace('/\n+/', "\n", $content);
|
|
|
|
// strip whitespace that ends in (or next line begin with) an operator
|
|
// that allows statements to be broken up over multiple lines
|
|
$before = $this->getOperatorsForRegex($this->operatorsBefore, '/');
|
|
$after = $this->getOperatorsForRegex($this->operatorsAfter, '/');
|
|
$content = preg_replace('/('.implode('|', $before).')\s+/', '\\1', $content);
|
|
$content = preg_replace('/\s+('.implode('|', $after).')/', '\\1', $content);
|
|
|
|
// make sure + and - can't be mistaken for, or joined into ++ and --
|
|
$content = preg_replace('/(?<![\+\-])\s*([\+\-])(?![\+\-])/', '\\1', $content);
|
|
$content = preg_replace('/(?<![\+\-])([\+\-])\s*(?![\+\-])/', '\\1', $content);
|
|
|
|
/*
|
|
* We didn't strip whitespace after a couple of operators because they
|
|
* could be used in different contexts and we can't be sure it's ok to
|
|
* strip the newlines. However, we can safely strip any non-line feed
|
|
* whitespace that follows them.
|
|
*/
|
|
$operators = $this->getOperatorsForRegex($this->operatorsBefore + $this->operatorsAfter, '/');
|
|
$content = preg_replace('/([\}\)\]])[^\S\n]+(?!'.implode('|', $operators).')/', '\\1', $content);
|
|
|
|
// collapse whitespace around reserved words into single space
|
|
$before = $this->getKeywordsForRegex($this->keywordsBefore, '/');
|
|
$after = $this->getKeywordsForRegex($this->keywordsAfter, '/');
|
|
$content = preg_replace('/(^|[;\}\s])\K('.implode('|', $before).')\s+/', '\\2 ', $content);
|
|
$content = preg_replace('/\s+('.implode('|', $after).')(?=([;\{\s]|$))/', ' \\1', $content);
|
|
|
|
// get rid of double semicolons, except when followed by closing-),
|
|
// where semicolons can be used like: "for(v=1,_=b;;)"
|
|
$content = preg_replace('/;+(?!\))/', ';', $content);
|
|
|
|
/*
|
|
* Next, we'll be removing all semicolons where ASI kicks in.
|
|
* for-loops however, can have an empty body (ending in only a
|
|
* semicolon), like: `for(i=1;i<3;i++);`
|
|
* Here, nothing happens during the loop; it's just used to keep
|
|
* increasing `i`. With that ; omitted, the next line would be expected
|
|
* to be the for-loop's body...
|
|
* I'm going to double that semicolon (if any) so after the next line,
|
|
* which strips semicolons here & there, we're still left with this one.
|
|
*/
|
|
$content = preg_replace('/(for\([^;]*;[^;]*;[^;\{]*\));(\}|$)/s', '\\1;;\\2', $content);
|
|
|
|
/*
|
|
* We also don't really want to terminate statements followed by closing
|
|
* curly braces (which we've ignored completely up until now) or end-of-
|
|
* script: ASI will kick in here & we're all about minifying.
|
|
* Semicolons at beginning of the file don't make any sense either.
|
|
*/
|
|
$content = preg_replace('/;(\}|$)/s', '\\1', $content);
|
|
$content = ltrim($content, ';');
|
|
|
|
// get rid of remaining whitespace af beginning/end
|
|
return trim($content);
|
|
}
|
|
|
|
/**
|
|
* We'll strip whitespace around certain operators with regular expressions.
|
|
* This will prepare the given array by escaping all characters.
|
|
*
|
|
* @param string[] $operators
|
|
* @param string $delimiter
|
|
* @return string[]
|
|
*/
|
|
protected function getOperatorsForRegex(array $operators, $delimiter = '/')
|
|
{
|
|
// escape operators for use in regex
|
|
$delimiter = array_fill(0, count($operators), $delimiter);
|
|
$escaped = array_map('preg_quote', $operators, $delimiter);
|
|
|
|
$operators = array_combine($operators, $escaped);
|
|
|
|
// ignore + & - for now, they'll get special treatment
|
|
unset($operators['+'], $operators['-']);
|
|
|
|
// dot can not just immediately follow a number; it can be confused for
|
|
// decimal point, or calling a method on it, e.g. 42 .toString()
|
|
$operators['.'] = '(?<![0-9]\s)\.';
|
|
|
|
return $operators;
|
|
}
|
|
|
|
/**
|
|
* We'll strip whitespace around certain keywords with regular expressions.
|
|
* This will prepare the given array by escaping all characters.
|
|
*
|
|
* @param string[] $keywords
|
|
* @param string $delimiter
|
|
* @return string[]
|
|
*/
|
|
protected function getKeywordsForRegex(array $keywords, $delimiter = '/')
|
|
{
|
|
// escape keywords for use in regex
|
|
$delimiter = array_fill(0, count($keywords), $delimiter);
|
|
$escaped = array_map('preg_quote', $keywords, $delimiter);
|
|
|
|
// add word boundaries
|
|
array_walk($keywords, function ($value) {
|
|
return '\b'.$value.'\b';
|
|
});
|
|
|
|
$keywords = array_combine($keywords, $escaped);
|
|
|
|
return $keywords;
|
|
}
|
|
|
|
/**
|
|
* Replaces all occurrences of array['key'] by array.key
|
|
*
|
|
* @param string $content
|
|
* @return string
|
|
*/
|
|
protected function propertyNotation($content)
|
|
{
|
|
// PHP only supports $this inside anonymous functions since 5.4
|
|
$minifier = $this;
|
|
$keywords = $this->keywordsReserved;
|
|
$callback = function ($match) use ($minifier, $keywords) {
|
|
$property = trim($minifier->extracted[$match[1]], '\'"');
|
|
|
|
/*
|
|
* Check if the property is a reserved keyword. In this context (as
|
|
* property of an object literal/array) it shouldn't matter, but IE8
|
|
* freaks out with "Expected identifier".
|
|
*/
|
|
if (in_array($property, $keywords)) {
|
|
return $match[0];
|
|
}
|
|
|
|
/*
|
|
* See if the property is in a variable-like format (e.g.
|
|
* array['key-here'] can't be replaced by array.key-here since '-'
|
|
* is not a valid character there.
|
|
*/
|
|
if (!preg_match('/^'.$minifier::REGEX_VARIABLE.'$/u', $property)) {
|
|
return $match[0];
|
|
}
|
|
|
|
return '.'.$property;
|
|
};
|
|
|
|
/*
|
|
* Figure out if previous character is a variable name (of the array
|
|
* we want to use property notation on) - this is to make sure
|
|
* standalone ['value'] arrays aren't confused for keys-of-an-array.
|
|
* We can (and only have to) check the last character, because PHP's
|
|
* regex implementation doesn't allow un-fixed-length lookbehind
|
|
* assertions.
|
|
*/
|
|
preg_match('/(\[[^\]]+\])[^\]]*$/', static::REGEX_VARIABLE, $previousChar);
|
|
$previousChar = $previousChar[1];
|
|
|
|
/*
|
|
* Make sure word preceding the ['value'] is not a keyword, e.g.
|
|
* return['x']. Because -again- PHP's regex implementation doesn't allow
|
|
* un-fixed-length lookbehind assertions, I'm just going to do a lot of
|
|
* separate lookbehind assertions, one for each keyword.
|
|
*/
|
|
$keywords = $this->getKeywordsForRegex($keywords);
|
|
$keywords = '(?<!'.implode(')(?<!', $keywords).')';
|
|
return preg_replace_callback('/(?<='.$previousChar.'|\])'.$keywords.'\[(([\'"])[0-9]+\\2)\]/u', $callback, $content);
|
|
}
|
|
|
|
/**
|
|
* Replaces true & false by !0 and !1.
|
|
*
|
|
* @param string $content
|
|
* @return string
|
|
*/
|
|
protected function shortenBools($content)
|
|
{
|
|
$content = preg_replace('/\btrue\b/', '!0', $content);
|
|
$content = preg_replace('/\bfalse\b/', '!1', $content);
|
|
|
|
// for(;;) is exactly the same as while(true)
|
|
$content = preg_replace('/\bwhile\(!0\)/', 'for(;;)', $content);
|
|
|
|
return $content;
|
|
}
|
|
}
|