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[Web] Minify css and js via PHP
[Web] Use PT Sans [Web] Update some libs
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@@ -0,0 +1,59 @@
|
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# How to contribute
|
||||
|
||||
|
||||
## Issues
|
||||
|
||||
When [filing bugs](https://github.com/matthiasmullie/minify/issues/new),
|
||||
try to be as thorough as possible:
|
||||
* What version did you use?
|
||||
* What did you try to do? ***Please post the relevant parts of your code.***
|
||||
* What went wrong? ***Please include error messages, if any.***
|
||||
* What was the expected result?
|
||||
|
||||
|
||||
## Pull requests
|
||||
|
||||
Bug fixes and general improvements to the existing codebase are always welcome.
|
||||
New features are also welcome, but will be judged on an individual basis. If
|
||||
you'd rather not risk wasting your time implementing a new feature only to see
|
||||
it turned down, please start the discussion by
|
||||
[opening an issue](https://github.com/matthiasmullie/minify/issues/new).
|
||||
|
||||
Don't forget to add your changes to the [changelog](CHANGELOG.md).
|
||||
|
||||
|
||||
### Testing
|
||||
|
||||
Please include tests for every change or addition to the code.
|
||||
To run the complete test suite:
|
||||
|
||||
```sh
|
||||
vendor/bin/phpunit
|
||||
```
|
||||
|
||||
When submitting a new pull request, please make sure that that the test suite
|
||||
passes (Travis CI will run it & report back on your pull request.)
|
||||
|
||||
To run the tests on Windows, run `tests/convert_symlinks_to_windows_style.sh`
|
||||
from the command line in order to convert Linux-style test symlinks to
|
||||
Windows-style.
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||||
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||||
|
||||
### Coding standards
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||||
All code must follow [PSR-2](http://www.php-fig.org/psr/psr-2/). Just make sure
|
||||
to run php-cs-fixer before submitting the code, it'll take care of the
|
||||
formatting for you:
|
||||
|
||||
```sh
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||||
vendor/bin/php-cs-fixer fix src
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||||
vendor/bin/php-cs-fixer fix tests
|
||||
```
|
||||
|
||||
Document the code thoroughly!
|
||||
|
||||
|
||||
## License
|
||||
|
||||
Note that minify is MIT-licensed, which basically allows anyone to do
|
||||
anything they like with it, without restriction.
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@@ -0,0 +1,13 @@
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ARG version=cli
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FROM php:$version
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COPY . /var/www
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WORKDIR /var/www
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RUN apt-get update
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RUN apt-get install -y zip unzip zlib1g-dev
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RUN docker-php-ext-install zip
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RUN docker-php-ext-install pcntl
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RUN curl -sS https://getcomposer.org/installer | php
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RUN mv composer.phar /usr/local/bin/composer
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RUN composer install
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@@ -0,0 +1,18 @@
|
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Copyright (c) 2012 Matthias Mullie
|
||||
|
||||
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.
|
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+45
@@ -0,0 +1,45 @@
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#!/usr/bin/env php
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<?php
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use MatthiasMullie\Minify;
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// command line utility to minify CSS
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if (file_exists(__DIR__ . '/../../../autoload.php')) {
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// if composer install
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require_once __DIR__ . '/../../../autoload.php';
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} else {
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require_once __DIR__ . '/../src/Minify.php';
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require_once __DIR__ . '/../src/CSS.php';
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require_once __DIR__ . '/../src/Exception.php';
|
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}
|
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|
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error_reporting(E_ALL);
|
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// check PHP setup for cli arguments
|
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if (!isset($_SERVER['argv']) && !isset($argv)) {
|
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fwrite(STDERR, 'Please enable the "register_argc_argv" directive in your php.ini' . PHP_EOL);
|
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exit(1);
|
||||
} elseif (!isset($argv)) {
|
||||
$argv = $_SERVER['argv'];
|
||||
}
|
||||
// check if path to file given
|
||||
if (!isset($argv[1])) {
|
||||
fwrite(STDERR, 'Argument expected: path to file' . PHP_EOL);
|
||||
exit(1);
|
||||
}
|
||||
// check if script run in cli environment
|
||||
if ('cli' !== php_sapi_name()) {
|
||||
fwrite(STDERR, $argv[1] . ' must be run in the command line' . PHP_EOL);
|
||||
exit(1);
|
||||
}
|
||||
// check if source file exists
|
||||
if (!file_exists($argv[1])) {
|
||||
fwrite(STDERR, 'Source file "' . $argv[1] . '" not found' . PHP_EOL);
|
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exit(1);
|
||||
}
|
||||
|
||||
try {
|
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$minifier = new Minify\CSS($argv[1]);
|
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echo $minifier->minify();
|
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} catch (Exception $e) {
|
||||
fwrite(STDERR, $e->getMessage(), PHP_EOL);
|
||||
exit(1);
|
||||
}
|
||||
+45
@@ -0,0 +1,45 @@
|
||||
#!/usr/bin/env php
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||||
<?php
|
||||
use MatthiasMullie\Minify;
|
||||
|
||||
// command line utility to minify JS
|
||||
if (file_exists(__DIR__ . '/../../../autoload.php')) {
|
||||
// if composer install
|
||||
require_once __DIR__ . '/../../../autoload.php';
|
||||
} else {
|
||||
require_once __DIR__ . '/../src/Minify.php';
|
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require_once __DIR__ . '/../src/JS.php';
|
||||
require_once __DIR__ . '/../src/Exception.php';
|
||||
}
|
||||
|
||||
error_reporting(E_ALL);
|
||||
// check PHP setup for cli arguments
|
||||
if (!isset($_SERVER['argv']) && !isset($argv)) {
|
||||
fwrite(STDERR, 'Please enable the "register_argc_argv" directive in your php.ini' . PHP_EOL);
|
||||
exit(1);
|
||||
} elseif (!isset($argv)) {
|
||||
$argv = $_SERVER['argv'];
|
||||
}
|
||||
// check if path to file given
|
||||
if (!isset($argv[1])) {
|
||||
fwrite(STDERR, 'Argument expected: path to file' . PHP_EOL);
|
||||
exit(1);
|
||||
}
|
||||
// check if script run in cli environment
|
||||
if ('cli' !== php_sapi_name()) {
|
||||
fwrite(STDERR, $argv[1] . ' must be run in the command line' . PHP_EOL);
|
||||
exit(1);
|
||||
}
|
||||
// check if source file exists
|
||||
if (!file_exists($argv[1])) {
|
||||
fwrite(STDERR, 'Source file "' . $argv[1] . '" not found' . PHP_EOL);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
try {
|
||||
$minifier = new Minify\JS($argv[1]);
|
||||
echo $minifier->minify();
|
||||
} catch (Exception $e) {
|
||||
fwrite(STDERR, $e->getMessage(), PHP_EOL);
|
||||
exit(1);
|
||||
}
|
||||
@@ -0,0 +1,38 @@
|
||||
{
|
||||
"name": "matthiasmullie/minify",
|
||||
"type": "library",
|
||||
"description": "CSS & JavaScript minifier, in PHP. Removes whitespace, strips comments, combines files (incl. @import statements and small assets in CSS files), and optimizes/shortens a few common programming patterns.",
|
||||
"keywords": ["minify", "minifier", "css", "js", "javascript"],
|
||||
"homepage": "http://www.minifier.org",
|
||||
"license": "MIT",
|
||||
"authors": [
|
||||
{
|
||||
"name": "Matthias Mullie",
|
||||
"homepage": "http://www.mullie.eu",
|
||||
"email": "minify@mullie.eu",
|
||||
"role": "Developer"
|
||||
}
|
||||
],
|
||||
"require": {
|
||||
"php": ">=5.3.0",
|
||||
"ext-pcre": "*",
|
||||
"matthiasmullie/path-converter": "~1.1"
|
||||
},
|
||||
"require-dev": {
|
||||
"matthiasmullie/scrapbook": "~1.0",
|
||||
"phpunit/phpunit": "~4.8",
|
||||
"friendsofphp/php-cs-fixer": "~2.0"
|
||||
},
|
||||
"suggest": {
|
||||
"psr/cache-implementation": "Cache implementation to use with Minify::cache"
|
||||
},
|
||||
"autoload": {
|
||||
"psr-4": {
|
||||
"MatthiasMullie\\Minify\\": "src/"
|
||||
}
|
||||
},
|
||||
"bin": [
|
||||
"bin/minifycss",
|
||||
"bin/minifyjs"
|
||||
]
|
||||
}
|
||||
@@ -0,0 +1,7 @@
|
||||
in
|
||||
public
|
||||
extends
|
||||
private
|
||||
protected
|
||||
implements
|
||||
instanceof
|
||||
@@ -0,0 +1,26 @@
|
||||
do
|
||||
in
|
||||
let
|
||||
new
|
||||
var
|
||||
case
|
||||
else
|
||||
enum
|
||||
void
|
||||
with
|
||||
class
|
||||
const
|
||||
yield
|
||||
delete
|
||||
export
|
||||
import
|
||||
public
|
||||
static
|
||||
typeof
|
||||
extends
|
||||
package
|
||||
private
|
||||
function
|
||||
protected
|
||||
implements
|
||||
instanceof
|
||||
@@ -0,0 +1,63 @@
|
||||
do
|
||||
if
|
||||
in
|
||||
for
|
||||
let
|
||||
new
|
||||
try
|
||||
var
|
||||
case
|
||||
else
|
||||
enum
|
||||
eval
|
||||
null
|
||||
this
|
||||
true
|
||||
void
|
||||
with
|
||||
break
|
||||
catch
|
||||
class
|
||||
const
|
||||
false
|
||||
super
|
||||
throw
|
||||
while
|
||||
yield
|
||||
delete
|
||||
export
|
||||
import
|
||||
public
|
||||
return
|
||||
static
|
||||
switch
|
||||
typeof
|
||||
default
|
||||
extends
|
||||
finally
|
||||
package
|
||||
private
|
||||
continue
|
||||
debugger
|
||||
function
|
||||
arguments
|
||||
interface
|
||||
protected
|
||||
implements
|
||||
instanceof
|
||||
abstract
|
||||
boolean
|
||||
byte
|
||||
char
|
||||
double
|
||||
final
|
||||
float
|
||||
goto
|
||||
int
|
||||
long
|
||||
native
|
||||
short
|
||||
synchronized
|
||||
throws
|
||||
transient
|
||||
volatile
|
||||
@@ -0,0 +1,46 @@
|
||||
+
|
||||
-
|
||||
*
|
||||
/
|
||||
%
|
||||
=
|
||||
+=
|
||||
-=
|
||||
*=
|
||||
/=
|
||||
%=
|
||||
<<=
|
||||
>>=
|
||||
>>>=
|
||||
&=
|
||||
^=
|
||||
|=
|
||||
&
|
||||
|
|
||||
^
|
||||
~
|
||||
<<
|
||||
>>
|
||||
>>>
|
||||
==
|
||||
===
|
||||
!=
|
||||
!==
|
||||
>
|
||||
<
|
||||
>=
|
||||
<=
|
||||
&&
|
||||
||
|
||||
!
|
||||
.
|
||||
[
|
||||
]
|
||||
?
|
||||
:
|
||||
,
|
||||
;
|
||||
(
|
||||
)
|
||||
{
|
||||
}
|
||||
@@ -0,0 +1,43 @@
|
||||
+
|
||||
-
|
||||
*
|
||||
/
|
||||
%
|
||||
=
|
||||
+=
|
||||
-=
|
||||
*=
|
||||
/=
|
||||
%=
|
||||
<<=
|
||||
>>=
|
||||
>>>=
|
||||
&=
|
||||
^=
|
||||
|=
|
||||
&
|
||||
|
|
||||
^
|
||||
<<
|
||||
>>
|
||||
>>>
|
||||
==
|
||||
===
|
||||
!=
|
||||
!==
|
||||
>
|
||||
<
|
||||
>=
|
||||
<=
|
||||
&&
|
||||
||
|
||||
.
|
||||
[
|
||||
]
|
||||
?
|
||||
:
|
||||
,
|
||||
;
|
||||
(
|
||||
)
|
||||
}
|
||||
@@ -0,0 +1,43 @@
|
||||
+
|
||||
-
|
||||
*
|
||||
/
|
||||
%
|
||||
=
|
||||
+=
|
||||
-=
|
||||
*=
|
||||
/=
|
||||
%=
|
||||
<<=
|
||||
>>=
|
||||
>>>=
|
||||
&=
|
||||
^=
|
||||
|=
|
||||
&
|
||||
|
|
||||
^
|
||||
~
|
||||
<<
|
||||
>>
|
||||
>>>
|
||||
==
|
||||
===
|
||||
!=
|
||||
!==
|
||||
>
|
||||
<
|
||||
>=
|
||||
<=
|
||||
&&
|
||||
||
|
||||
!
|
||||
.
|
||||
[
|
||||
?
|
||||
:
|
||||
,
|
||||
;
|
||||
(
|
||||
{
|
||||
@@ -0,0 +1,31 @@
|
||||
version: '2.1'
|
||||
services:
|
||||
php:
|
||||
build:
|
||||
context: .
|
||||
dockerfile: Dockerfile
|
||||
volumes:
|
||||
- ./src:/var/www/src
|
||||
- ./data:/var/www/data
|
||||
- ./tests:/var/www/tests
|
||||
- ./phpunit.xml.dist:/var/www/phpunit.xml.dist
|
||||
'7.2':
|
||||
extends: php
|
||||
build:
|
||||
args:
|
||||
version: 7.2-cli
|
||||
'7.1':
|
||||
extends: php
|
||||
build:
|
||||
args:
|
||||
version: 7.1-cli
|
||||
'7.0':
|
||||
extends: php
|
||||
build:
|
||||
args:
|
||||
version: 7.0-cli
|
||||
'5.6':
|
||||
extends: php
|
||||
build:
|
||||
args:
|
||||
version: 5.6-cli
|
||||
@@ -0,0 +1,751 @@
|
||||
<?php
|
||||
/**
|
||||
* CSS Minifier
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
|
||||
namespace MatthiasMullie\Minify;
|
||||
|
||||
use MatthiasMullie\Minify\Exceptions\FileImportException;
|
||||
use MatthiasMullie\PathConverter\ConverterInterface;
|
||||
use MatthiasMullie\PathConverter\Converter;
|
||||
|
||||
/**
|
||||
* CSS minifier
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @package Minify
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @author Tijs Verkoyen <minify@verkoyen.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
class CSS extends Minify
|
||||
{
|
||||
/**
|
||||
* @var int maximum inport size in kB
|
||||
*/
|
||||
protected $maxImportSize = 5;
|
||||
|
||||
/**
|
||||
* @var string[] valid import extensions
|
||||
*/
|
||||
protected $importExtensions = array(
|
||||
'gif' => 'data:image/gif',
|
||||
'png' => 'data:image/png',
|
||||
'jpe' => 'data:image/jpeg',
|
||||
'jpg' => 'data:image/jpeg',
|
||||
'jpeg' => 'data:image/jpeg',
|
||||
'svg' => 'data:image/svg+xml',
|
||||
'woff' => 'data:application/x-font-woff',
|
||||
'tif' => 'image/tiff',
|
||||
'tiff' => 'image/tiff',
|
||||
'xbm' => 'image/x-xbitmap',
|
||||
);
|
||||
|
||||
/**
|
||||
* Set the maximum size if files to be imported.
|
||||
*
|
||||
* Files larger than this size (in kB) will not be imported into the CSS.
|
||||
* Importing files into the CSS as data-uri will save you some connections,
|
||||
* but we should only import relatively small decorative images so that our
|
||||
* CSS file doesn't get too bulky.
|
||||
*
|
||||
* @param int $size Size in kB
|
||||
*/
|
||||
public function setMaxImportSize($size)
|
||||
{
|
||||
$this->maxImportSize = $size;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the type of extensions to be imported into the CSS (to save network
|
||||
* connections).
|
||||
* Keys of the array should be the file extensions & respective values
|
||||
* should be the data type.
|
||||
*
|
||||
* @param string[] $extensions Array of file extensions
|
||||
*/
|
||||
public function setImportExtensions(array $extensions)
|
||||
{
|
||||
$this->importExtensions = $extensions;
|
||||
}
|
||||
|
||||
/**
|
||||
* Move any import statements to the top.
|
||||
*
|
||||
* @param string $content Nearly finished CSS content
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function moveImportsToTop($content)
|
||||
{
|
||||
if (preg_match_all('/(;?)(@import (?<url>url\()?(?P<quotes>["\']?).+?(?P=quotes)(?(url)\)));?/', $content, $matches)) {
|
||||
// remove from content
|
||||
foreach ($matches[0] as $import) {
|
||||
$content = str_replace($import, '', $content);
|
||||
}
|
||||
|
||||
// add to top
|
||||
$content = implode(';', $matches[2]).';'.trim($content, ';');
|
||||
}
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Combine CSS from import statements.
|
||||
*
|
||||
* @import's will be loaded and their content merged into the original file,
|
||||
* to save HTTP requests.
|
||||
*
|
||||
* @param string $source The file to combine imports for
|
||||
* @param string $content The CSS content to combine imports for
|
||||
* @param string[] $parents Parent paths, for circular reference checks
|
||||
*
|
||||
* @return string
|
||||
*
|
||||
* @throws FileImportException
|
||||
*/
|
||||
protected function combineImports($source, $content, $parents)
|
||||
{
|
||||
$importRegexes = array(
|
||||
// @import url(xxx)
|
||||
'/
|
||||
# import statement
|
||||
@import
|
||||
|
||||
# whitespace
|
||||
\s+
|
||||
|
||||
# open url()
|
||||
url\(
|
||||
|
||||
# (optional) open path enclosure
|
||||
(?P<quotes>["\']?)
|
||||
|
||||
# fetch path
|
||||
(?P<path>.+?)
|
||||
|
||||
# (optional) close path enclosure
|
||||
(?P=quotes)
|
||||
|
||||
# close url()
|
||||
\)
|
||||
|
||||
# (optional) trailing whitespace
|
||||
\s*
|
||||
|
||||
# (optional) media statement(s)
|
||||
(?P<media>[^;]*)
|
||||
|
||||
# (optional) trailing whitespace
|
||||
\s*
|
||||
|
||||
# (optional) closing semi-colon
|
||||
;?
|
||||
|
||||
/ix',
|
||||
|
||||
// @import 'xxx'
|
||||
'/
|
||||
|
||||
# import statement
|
||||
@import
|
||||
|
||||
# whitespace
|
||||
\s+
|
||||
|
||||
# open path enclosure
|
||||
(?P<quotes>["\'])
|
||||
|
||||
# fetch path
|
||||
(?P<path>.+?)
|
||||
|
||||
# close path enclosure
|
||||
(?P=quotes)
|
||||
|
||||
# (optional) trailing whitespace
|
||||
\s*
|
||||
|
||||
# (optional) media statement(s)
|
||||
(?P<media>[^;]*)
|
||||
|
||||
# (optional) trailing whitespace
|
||||
\s*
|
||||
|
||||
# (optional) closing semi-colon
|
||||
;?
|
||||
|
||||
/ix',
|
||||
);
|
||||
|
||||
// find all relative imports in css
|
||||
$matches = array();
|
||||
foreach ($importRegexes as $importRegex) {
|
||||
if (preg_match_all($importRegex, $content, $regexMatches, PREG_SET_ORDER)) {
|
||||
$matches = array_merge($matches, $regexMatches);
|
||||
}
|
||||
}
|
||||
|
||||
$search = array();
|
||||
$replace = array();
|
||||
|
||||
// loop the matches
|
||||
foreach ($matches as $match) {
|
||||
// get the path for the file that will be imported
|
||||
$importPath = dirname($source).'/'.$match['path'];
|
||||
|
||||
// only replace the import with the content if we can grab the
|
||||
// content of the file
|
||||
if (!$this->canImportByPath($match['path']) || !$this->canImportFile($importPath)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
// check if current file was not imported previously in the same
|
||||
// import chain.
|
||||
if (in_array($importPath, $parents)) {
|
||||
throw new FileImportException('Failed to import file "'.$importPath.'": circular reference detected.');
|
||||
}
|
||||
|
||||
// grab referenced file & minify it (which may include importing
|
||||
// yet other @import statements recursively)
|
||||
$minifier = new static($importPath);
|
||||
$minifier->setMaxImportSize($this->maxImportSize);
|
||||
$minifier->setImportExtensions($this->importExtensions);
|
||||
$importContent = $minifier->execute($source, $parents);
|
||||
|
||||
// check if this is only valid for certain media
|
||||
if (!empty($match['media'])) {
|
||||
$importContent = '@media '.$match['media'].'{'.$importContent.'}';
|
||||
}
|
||||
|
||||
// add to replacement array
|
||||
$search[] = $match[0];
|
||||
$replace[] = $importContent;
|
||||
}
|
||||
|
||||
// replace the import statements
|
||||
return str_replace($search, $replace, $content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Import files into the CSS, base64-ized.
|
||||
*
|
||||
* @url(image.jpg) images will be loaded and their content merged into the
|
||||
* original file, to save HTTP requests.
|
||||
*
|
||||
* @param string $source The file to import files for
|
||||
* @param string $content The CSS content to import files for
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function importFiles($source, $content)
|
||||
{
|
||||
$regex = '/url\((["\']?)(.+?)\\1\)/i';
|
||||
if ($this->importExtensions && preg_match_all($regex, $content, $matches, PREG_SET_ORDER)) {
|
||||
$search = array();
|
||||
$replace = array();
|
||||
|
||||
// loop the matches
|
||||
foreach ($matches as $match) {
|
||||
$extension = substr(strrchr($match[2], '.'), 1);
|
||||
if ($extension && !array_key_exists($extension, $this->importExtensions)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
// get the path for the file that will be imported
|
||||
$path = $match[2];
|
||||
$path = dirname($source).'/'.$path;
|
||||
|
||||
// only replace the import with the content if we're able to get
|
||||
// the content of the file, and it's relatively small
|
||||
if ($this->canImportFile($path) && $this->canImportBySize($path)) {
|
||||
// grab content && base64-ize
|
||||
$importContent = $this->load($path);
|
||||
$importContent = base64_encode($importContent);
|
||||
|
||||
// build replacement
|
||||
$search[] = $match[0];
|
||||
$replace[] = 'url('.$this->importExtensions[$extension].';base64,'.$importContent.')';
|
||||
}
|
||||
}
|
||||
|
||||
// replace the import statements
|
||||
$content = str_replace($search, $replace, $content);
|
||||
}
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Minify the data.
|
||||
* Perform CSS optimizations.
|
||||
*
|
||||
* @param string[optional] $path Path to write the data to
|
||||
* @param string[] $parents Parent paths, for circular reference checks
|
||||
*
|
||||
* @return string The minified data
|
||||
*/
|
||||
public function execute($path = null, $parents = array())
|
||||
{
|
||||
$content = '';
|
||||
|
||||
// loop CSS data (raw data and files)
|
||||
foreach ($this->data as $source => $css) {
|
||||
/*
|
||||
* Let's first take out strings & comments, since we can't just
|
||||
* remove whitespace anywhere. If whitespace occurs inside a string,
|
||||
* we should leave it alone. E.g.:
|
||||
* p { content: "a test" }
|
||||
*/
|
||||
$this->extractStrings();
|
||||
$this->stripComments();
|
||||
$this->extractCalcs();
|
||||
$css = $this->replace($css);
|
||||
|
||||
$css = $this->stripWhitespace($css);
|
||||
$css = $this->shortenColors($css);
|
||||
$css = $this->shortenZeroes($css);
|
||||
$css = $this->shortenFontWeights($css);
|
||||
$css = $this->stripEmptyTags($css);
|
||||
|
||||
// restore the string we've extracted earlier
|
||||
$css = $this->restoreExtractedData($css);
|
||||
|
||||
$source = is_int($source) ? '' : $source;
|
||||
$parents = $source ? array_merge($parents, array($source)) : $parents;
|
||||
$css = $this->combineImports($source, $css, $parents);
|
||||
$css = $this->importFiles($source, $css);
|
||||
|
||||
/*
|
||||
* If we'll save to a new path, we'll have to fix the relative paths
|
||||
* to be relative no longer to the source file, but to the new path.
|
||||
* If we don't write to a file, fall back to same path so no
|
||||
* conversion happens (because we still want it to go through most
|
||||
* of the move code, which also addresses url() & @import syntax...)
|
||||
*/
|
||||
$converter = $this->getPathConverter($source, $path ?: $source);
|
||||
$css = $this->move($converter, $css);
|
||||
|
||||
// combine css
|
||||
$content .= $css;
|
||||
}
|
||||
|
||||
$content = $this->moveImportsToTop($content);
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Moving a css file should update all relative urls.
|
||||
* Relative references (e.g. ../images/image.gif) in a certain css file,
|
||||
* will have to be updated when a file is being saved at another location
|
||||
* (e.g. ../../images/image.gif, if the new CSS file is 1 folder deeper).
|
||||
*
|
||||
* @param ConverterInterface $converter Relative path converter
|
||||
* @param string $content The CSS content to update relative urls for
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function move(ConverterInterface $converter, $content)
|
||||
{
|
||||
/*
|
||||
* Relative path references will usually be enclosed by url(). @import
|
||||
* is an exception, where url() is not necessary around the path (but is
|
||||
* allowed).
|
||||
* This *could* be 1 regular expression, where both regular expressions
|
||||
* in this array are on different sides of a |. But we're using named
|
||||
* patterns in both regexes, the same name on both regexes. This is only
|
||||
* possible with a (?J) modifier, but that only works after a fairly
|
||||
* recent PCRE version. That's why I'm doing 2 separate regular
|
||||
* expressions & combining the matches after executing of both.
|
||||
*/
|
||||
$relativeRegexes = array(
|
||||
// url(xxx)
|
||||
'/
|
||||
# open url()
|
||||
url\(
|
||||
|
||||
\s*
|
||||
|
||||
# open path enclosure
|
||||
(?P<quotes>["\'])?
|
||||
|
||||
# fetch path
|
||||
(?P<path>.+?)
|
||||
|
||||
# close path enclosure
|
||||
(?(quotes)(?P=quotes))
|
||||
|
||||
\s*
|
||||
|
||||
# close url()
|
||||
\)
|
||||
|
||||
/ix',
|
||||
|
||||
// @import "xxx"
|
||||
'/
|
||||
# import statement
|
||||
@import
|
||||
|
||||
# whitespace
|
||||
\s+
|
||||
|
||||
# we don\'t have to check for @import url(), because the
|
||||
# condition above will already catch these
|
||||
|
||||
# open path enclosure
|
||||
(?P<quotes>["\'])
|
||||
|
||||
# fetch path
|
||||
(?P<path>.+?)
|
||||
|
||||
# close path enclosure
|
||||
(?P=quotes)
|
||||
|
||||
/ix',
|
||||
);
|
||||
|
||||
// find all relative urls in css
|
||||
$matches = array();
|
||||
foreach ($relativeRegexes as $relativeRegex) {
|
||||
if (preg_match_all($relativeRegex, $content, $regexMatches, PREG_SET_ORDER)) {
|
||||
$matches = array_merge($matches, $regexMatches);
|
||||
}
|
||||
}
|
||||
|
||||
$search = array();
|
||||
$replace = array();
|
||||
|
||||
// loop all urls
|
||||
foreach ($matches as $match) {
|
||||
// determine if it's a url() or an @import match
|
||||
$type = (strpos($match[0], '@import') === 0 ? 'import' : 'url');
|
||||
|
||||
$url = $match['path'];
|
||||
if ($this->canImportByPath($url)) {
|
||||
// attempting to interpret GET-params makes no sense, so let's discard them for awhile
|
||||
$params = strrchr($url, '?');
|
||||
$url = $params ? substr($url, 0, -strlen($params)) : $url;
|
||||
|
||||
// fix relative url
|
||||
$url = $converter->convert($url);
|
||||
|
||||
// now that the path has been converted, re-apply GET-params
|
||||
$url .= $params;
|
||||
}
|
||||
|
||||
/*
|
||||
* Urls with control characters above 0x7e should be quoted.
|
||||
* According to Mozilla's parser, whitespace is only allowed at the
|
||||
* end of unquoted urls.
|
||||
* Urls with `)` (as could happen with data: uris) should also be
|
||||
* quoted to avoid being confused for the url() closing parentheses.
|
||||
* And urls with a # have also been reported to cause issues.
|
||||
* Urls with quotes inside should also remain escaped.
|
||||
*
|
||||
* @see https://developer.mozilla.org/nl/docs/Web/CSS/url#The_url()_functional_notation
|
||||
* @see https://hg.mozilla.org/mozilla-central/rev/14abca4e7378
|
||||
* @see https://github.com/matthiasmullie/minify/issues/193
|
||||
*/
|
||||
$url = trim($url);
|
||||
if (preg_match('/[\s\)\'"#\x{7f}-\x{9f}]/u', $url)) {
|
||||
$url = $match['quotes'] . $url . $match['quotes'];
|
||||
}
|
||||
|
||||
// build replacement
|
||||
$search[] = $match[0];
|
||||
if ($type === 'url') {
|
||||
$replace[] = 'url('.$url.')';
|
||||
} elseif ($type === 'import') {
|
||||
$replace[] = '@import "'.$url.'"';
|
||||
}
|
||||
}
|
||||
|
||||
// replace urls
|
||||
return str_replace($search, $replace, $content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Shorthand hex color codes.
|
||||
* #FF0000 -> #F00.
|
||||
*
|
||||
* @param string $content The CSS content to shorten the hex color codes for
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function shortenColors($content)
|
||||
{
|
||||
$content = preg_replace('/(?<=[: ])#([0-9a-z])\\1([0-9a-z])\\2([0-9a-z])\\3(?:([0-9a-z])\\4)?(?=[; }])/i', '#$1$2$3$4', $content);
|
||||
|
||||
// remove alpha channel if it's pointless...
|
||||
$content = preg_replace('/(?<=[: ])#([0-9a-z]{6})ff?(?=[; }])/i', '#$1', $content);
|
||||
$content = preg_replace('/(?<=[: ])#([0-9a-z]{3})f?(?=[; }])/i', '#$1', $content);
|
||||
|
||||
$colors = array(
|
||||
// we can shorten some even more by replacing them with their color name
|
||||
'#F0FFFF' => 'azure',
|
||||
'#F5F5DC' => 'beige',
|
||||
'#A52A2A' => 'brown',
|
||||
'#FF7F50' => 'coral',
|
||||
'#FFD700' => 'gold',
|
||||
'#808080' => 'gray',
|
||||
'#008000' => 'green',
|
||||
'#4B0082' => 'indigo',
|
||||
'#FFFFF0' => 'ivory',
|
||||
'#F0E68C' => 'khaki',
|
||||
'#FAF0E6' => 'linen',
|
||||
'#800000' => 'maroon',
|
||||
'#000080' => 'navy',
|
||||
'#808000' => 'olive',
|
||||
'#CD853F' => 'peru',
|
||||
'#FFC0CB' => 'pink',
|
||||
'#DDA0DD' => 'plum',
|
||||
'#800080' => 'purple',
|
||||
'#F00' => 'red',
|
||||
'#FA8072' => 'salmon',
|
||||
'#A0522D' => 'sienna',
|
||||
'#C0C0C0' => 'silver',
|
||||
'#FFFAFA' => 'snow',
|
||||
'#D2B48C' => 'tan',
|
||||
'#FF6347' => 'tomato',
|
||||
'#EE82EE' => 'violet',
|
||||
'#F5DEB3' => 'wheat',
|
||||
// or the other way around
|
||||
'WHITE' => '#fff',
|
||||
'BLACK' => '#000',
|
||||
);
|
||||
|
||||
return preg_replace_callback(
|
||||
'/(?<=[: ])('.implode(array_keys($colors), '|').')(?=[; }])/i',
|
||||
function ($match) use ($colors) {
|
||||
return $colors[strtoupper($match[0])];
|
||||
},
|
||||
$content
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Shorten CSS font weights.
|
||||
*
|
||||
* @param string $content The CSS content to shorten the font weights for
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function shortenFontWeights($content)
|
||||
{
|
||||
$weights = array(
|
||||
'normal' => 400,
|
||||
'bold' => 700,
|
||||
);
|
||||
|
||||
$callback = function ($match) use ($weights) {
|
||||
return $match[1].$weights[$match[2]];
|
||||
};
|
||||
|
||||
return preg_replace_callback('/(font-weight\s*:\s*)('.implode('|', array_keys($weights)).')(?=[;}])/', $callback, $content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Shorthand 0 values to plain 0, instead of e.g. -0em.
|
||||
*
|
||||
* @param string $content The CSS content to shorten the zero values for
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function shortenZeroes($content)
|
||||
{
|
||||
// we don't want to strip units in `calc()` expressions:
|
||||
// `5px - 0px` is valid, but `5px - 0` is not
|
||||
// `10px * 0` is valid (equates to 0), and so is `10 * 0px`, but
|
||||
// `10 * 0` is invalid
|
||||
// we've extracted calcs earlier, so we don't need to worry about this
|
||||
|
||||
// reusable bits of code throughout these regexes:
|
||||
// before & after are used to make sure we don't match lose unintended
|
||||
// 0-like values (e.g. in #000, or in http://url/1.0)
|
||||
// units can be stripped from 0 values, or used to recognize non 0
|
||||
// values (where wa may be able to strip a .0 suffix)
|
||||
$before = '(?<=[:(, ])';
|
||||
$after = '(?=[ ,);}])';
|
||||
$units = '(em|ex|%|px|cm|mm|in|pt|pc|ch|rem|vh|vw|vmin|vmax|vm)';
|
||||
|
||||
// strip units after zeroes (0px -> 0)
|
||||
// NOTE: it should be safe to remove all units for a 0 value, but in
|
||||
// practice, Webkit (especially Safari) seems to stumble over at least
|
||||
// 0%, potentially other units as well. Only stripping 'px' for now.
|
||||
// @see https://github.com/matthiasmullie/minify/issues/60
|
||||
$content = preg_replace('/'.$before.'(-?0*(\.0+)?)(?<=0)px'.$after.'/', '\\1', $content);
|
||||
|
||||
// strip 0-digits (.0 -> 0)
|
||||
$content = preg_replace('/'.$before.'\.0+'.$units.'?'.$after.'/', '0\\1', $content);
|
||||
// strip trailing 0: 50.10 -> 50.1, 50.10px -> 50.1px
|
||||
$content = preg_replace('/'.$before.'(-?[0-9]+\.[0-9]+)0+'.$units.'?'.$after.'/', '\\1\\2', $content);
|
||||
// strip trailing 0: 50.00 -> 50, 50.00px -> 50px
|
||||
$content = preg_replace('/'.$before.'(-?[0-9]+)\.0+'.$units.'?'.$after.'/', '\\1\\2', $content);
|
||||
// strip leading 0: 0.1 -> .1, 01.1 -> 1.1
|
||||
$content = preg_replace('/'.$before.'(-?)0+([0-9]*\.[0-9]+)'.$units.'?'.$after.'/', '\\1\\2\\3', $content);
|
||||
|
||||
// strip negative zeroes (-0 -> 0) & truncate zeroes (00 -> 0)
|
||||
$content = preg_replace('/'.$before.'-?0+'.$units.'?'.$after.'/', '0\\1', $content);
|
||||
|
||||
// IE doesn't seem to understand a unitless flex-basis value (correct -
|
||||
// it goes against the spec), so let's add it in again (make it `%`,
|
||||
// which is only 1 char: 0%, 0px, 0 anything, it's all just the same)
|
||||
// @see https://developer.mozilla.org/nl/docs/Web/CSS/flex
|
||||
$content = preg_replace('/flex:([0-9]+\s[0-9]+\s)0([;\}])/', 'flex:${1}0%${2}', $content);
|
||||
$content = preg_replace('/flex-basis:0([;\}])/', 'flex-basis:0%${1}', $content);
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Strip empty tags from source code.
|
||||
*
|
||||
* @param string $content
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function stripEmptyTags($content)
|
||||
{
|
||||
$content = preg_replace('/(?<=^)[^\{\};]+\{\s*\}/', '', $content);
|
||||
$content = preg_replace('/(?<=(\}|;))[^\{\};]+\{\s*\}/', '', $content);
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Strip comments from source code.
|
||||
*/
|
||||
protected function stripComments()
|
||||
{
|
||||
// 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[0];
|
||||
|
||||
return $placeholder;
|
||||
};
|
||||
$this->registerPattern('/\n?\/\*(!|.*?@license|.*?@preserve).*?\*\/\n?/s', $callback);
|
||||
|
||||
$this->registerPattern('/\/\*.*?\*\//s', '');
|
||||
}
|
||||
|
||||
/**
|
||||
* Strip whitespace.
|
||||
*
|
||||
* @param string $content The CSS content to strip the whitespace for
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function stripWhitespace($content)
|
||||
{
|
||||
// remove leading & trailing whitespace
|
||||
$content = preg_replace('/^\s*/m', '', $content);
|
||||
$content = preg_replace('/\s*$/m', '', $content);
|
||||
|
||||
// replace newlines with a single space
|
||||
$content = preg_replace('/\s+/', ' ', $content);
|
||||
|
||||
// remove whitespace around meta characters
|
||||
// inspired by stackoverflow.com/questions/15195750/minify-compress-css-with-regex
|
||||
$content = preg_replace('/\s*([\*$~^|]?+=|[{};,>~]|!important\b)\s*/', '$1', $content);
|
||||
$content = preg_replace('/([\[(:>\+])\s+/', '$1', $content);
|
||||
$content = preg_replace('/\s+([\]\)>\+])/', '$1', $content);
|
||||
$content = preg_replace('/\s+(:)(?![^\}]*\{)/', '$1', $content);
|
||||
|
||||
// whitespace around + and - can only be stripped inside some pseudo-
|
||||
// classes, like `:nth-child(3+2n)`
|
||||
// not in things like `calc(3px + 2px)`, shorthands like `3px -2px`, or
|
||||
// selectors like `div.weird- p`
|
||||
$pseudos = array('nth-child', 'nth-last-child', 'nth-last-of-type', 'nth-of-type');
|
||||
$content = preg_replace('/:('.implode('|', $pseudos).')\(\s*([+-]?)\s*(.+?)\s*([+-]?)\s*(.*?)\s*\)/', ':$1($2$3$4$5)', $content);
|
||||
|
||||
// remove semicolon/whitespace followed by closing bracket
|
||||
$content = str_replace(';}', '}', $content);
|
||||
|
||||
return trim($content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Replace all `calc()` occurrences.
|
||||
*/
|
||||
protected function extractCalcs()
|
||||
{
|
||||
// PHP only supports $this inside anonymous functions since 5.4
|
||||
$minifier = $this;
|
||||
$callback = function ($match) use ($minifier) {
|
||||
$length = strlen($match[1]);
|
||||
$expr = '';
|
||||
$opened = 0;
|
||||
|
||||
for ($i = 0; $i < $length; $i++) {
|
||||
$char = $match[1][$i];
|
||||
$expr .= $char;
|
||||
if ($char === '(') {
|
||||
$opened++;
|
||||
} elseif ($char === ')' && --$opened === 0) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
$rest = str_replace($expr, '', $match[1]);
|
||||
$expr = trim(substr($expr, 1, -1));
|
||||
|
||||
$count = count($minifier->extracted);
|
||||
$placeholder = 'calc('.$count.')';
|
||||
$minifier->extracted[$placeholder] = 'calc('.$expr.')';
|
||||
|
||||
return $placeholder.$rest;
|
||||
};
|
||||
|
||||
$this->registerPattern('/calc(\(.+?)(?=$|;|calc\()/', $callback);
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if file is small enough to be imported.
|
||||
*
|
||||
* @param string $path The path to the file
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
protected function canImportBySize($path)
|
||||
{
|
||||
return ($size = @filesize($path)) && $size <= $this->maxImportSize * 1024;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if file a file can be imported, going by the path.
|
||||
*
|
||||
* @param string $path
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
protected function canImportByPath($path)
|
||||
{
|
||||
return preg_match('/^(data:|https?:|\\/)/', $path) === 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a converter to update relative paths to be relative to the new
|
||||
* destination.
|
||||
*
|
||||
* @param string $source
|
||||
* @param string $target
|
||||
*
|
||||
* @return ConverterInterface
|
||||
*/
|
||||
protected function getPathConverter($source, $target)
|
||||
{
|
||||
return new Converter($source, $target);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,20 @@
|
||||
<?php
|
||||
/**
|
||||
* Base Exception
|
||||
*
|
||||
* @deprecated Use Exceptions\BasicException instead
|
||||
*
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
*/
|
||||
namespace MatthiasMullie\Minify;
|
||||
|
||||
/**
|
||||
* Base Exception Class
|
||||
* @deprecated Use Exceptions\BasicException instead
|
||||
*
|
||||
* @package Minify
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
*/
|
||||
abstract class Exception extends \Exception
|
||||
{
|
||||
}
|
||||
+23
@@ -0,0 +1,23 @@
|
||||
<?php
|
||||
/**
|
||||
* Basic exception
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
namespace MatthiasMullie\Minify\Exceptions;
|
||||
|
||||
use MatthiasMullie\Minify\Exception;
|
||||
|
||||
/**
|
||||
* Basic Exception Class
|
||||
*
|
||||
* @package Minify\Exception
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
*/
|
||||
abstract class BasicException extends Exception
|
||||
{
|
||||
}
|
||||
+21
@@ -0,0 +1,21 @@
|
||||
<?php
|
||||
/**
|
||||
* File Import Exception
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
namespace MatthiasMullie\Minify\Exceptions;
|
||||
|
||||
/**
|
||||
* File Import Exception Class
|
||||
*
|
||||
* @package Minify\Exception
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
*/
|
||||
class FileImportException extends BasicException
|
||||
{
|
||||
}
|
||||
@@ -0,0 +1,21 @@
|
||||
<?php
|
||||
/**
|
||||
* IO Exception
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
namespace MatthiasMullie\Minify\Exceptions;
|
||||
|
||||
/**
|
||||
* IO Exception Class
|
||||
*
|
||||
* @package Minify\Exception
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
*/
|
||||
class IOException extends BasicException
|
||||
{
|
||||
}
|
||||
@@ -0,0 +1,612 @@
|
||||
<?php
|
||||
/**
|
||||
* JavaScript minifier
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
namespace MatthiasMullie\Minify;
|
||||
|
||||
/**
|
||||
* JavaScript Minifier Class
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @package Minify
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @author Tijs Verkoyen <minify@verkoyen.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
class JS extends Minify
|
||||
{
|
||||
/**
|
||||
* Var-matching regex based on http://stackoverflow.com/a/9337047/802993.
|
||||
*
|
||||
* Note that regular expressions using that bit must have the PCRE_UTF8
|
||||
* pattern modifier (/u) set.
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
const REGEX_VARIABLE = '\b[$A-Z\_a-z\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\x{02c1}\x{02c6}-\x{02d1}\x{02e0}-\x{02e4}\x{02ec}\x{02ee}\x{0370}-\x{0374}\x{0376}\x{0377}\x{037a}-\x{037d}\x{0386}\x{0388}-\x{038a}\x{038c}\x{038e}-\x{03a1}\x{03a3}-\x{03f5}\x{03f7}-\x{0481}\x{048a}-\x{0527}\x{0531}-\x{0556}\x{0559}\x{0561}-\x{0587}\x{05d0}-\x{05ea}\x{05f0}-\x{05f2}\x{0620}-\x{064a}\x{066e}\x{066f}\x{0671}-\x{06d3}\x{06d5}\x{06e5}\x{06e6}\x{06ee}\x{06ef}\x{06fa}-\x{06fc}\x{06ff}\x{0710}\x{0712}-\x{072f}\x{074d}-\x{07a5}\x{07b1}\x{07ca}-\x{07ea}\x{07f4}\x{07f5}\x{07fa}\x{0800}-\x{0815}\x{081a}\x{0824}\x{0828}\x{0840}-\x{0858}\x{08a0}\x{08a2}-\x{08ac}\x{0904}-\x{0939}\x{093d}\x{0950}\x{0958}-\x{0961}\x{0971}-\x{0977}\x{0979}-\x{097f}\x{0985}-\x{098c}\x{098f}\x{0990}\x{0993}-\x{09a8}\x{09aa}-\x{09b0}\x{09b2}\x{09b6}-\x{09b9}\x{09bd}\x{09ce}\x{09dc}\x{09dd}\x{09df}-\x{09e1}\x{09f0}\x{09f1}\x{0a05}-\x{0a0a}\x{0a0f}\x{0a10}\x{0a13}-\x{0a28}\x{0a2a}-\x{0a30}\x{0a32}\x{0a33}\x{0a35}\x{0a36}\x{0a38}\x{0a39}\x{0a59}-\x{0a5c}\x{0a5e}\x{0a72}-\x{0a74}\x{0a85}-\x{0a8d}\x{0a8f}-\x{0a91}\x{0a93}-\x{0aa8}\x{0aaa}-\x{0ab0}\x{0ab2}\x{0ab3}\x{0ab5}-\x{0ab9}\x{0abd}\x{0ad0}\x{0ae0}\x{0ae1}\x{0b05}-\x{0b0c}\x{0b0f}\x{0b10}\x{0b13}-\x{0b28}\x{0b2a}-\x{0b30}\x{0b32}\x{0b33}\x{0b35}-\x{0b39}\x{0b3d}\x{0b5c}\x{0b5d}\x{0b5f}-\x{0b61}\x{0b71}\x{0b83}\x{0b85}-\x{0b8a}\x{0b8e}-\x{0b90}\x{0b92}-\x{0b95}\x{0b99}\x{0b9a}\x{0b9c}\x{0b9e}\x{0b9f}\x{0ba3}\x{0ba4}\x{0ba8}-\x{0baa}\x{0bae}-\x{0bb9}\x{0bd0}\x{0c05}-\x{0c0c}\x{0c0e}-\x{0c10}\x{0c12}-\x{0c28}\x{0c2a}-\x{0c33}\x{0c35}-\x{0c39}\x{0c3d}\x{0c58}\x{0c59}\x{0c60}\x{0c61}\x{0c85}-\x{0c8c}\x{0c8e}-\x{0c90}\x{0c92}-\x{0ca8}\x{0caa}-\x{0cb3}\x{0cb5}-\x{0cb9}\x{0cbd}\x{0cde}\x{0ce0}\x{0ce1}\x{0cf1}\x{0cf2}\x{0d05}-\x{0d0c}\x{0d0e}-\x{0d10}\x{0d12}-\x{0d3a}\x{0d3d}\x{0d4e}\x{0d60}\x{0d61}\x{0d7a}-\x{0d7f}\x{0d85}-\x{0d96}\x{0d9a}-\x{0db1}\x{0db3}-\x{0dbb}\x{0dbd}\x{0dc0}-\x{0dc6}\x{0e01}-\x{0e30}\x{0e32}\x{0e33}\x{0e40}-\x{0e46}\x{0e81}\x{0e82}\x{0e84}\x{0e87}\x{0e88}\x{0e8a}\x{0e8d}\x{0e94}-\x{0e97}\x{0e99}-\x{0e9f}\x{0ea1}-\x{0ea3}\x{0ea5}\x{0ea7}\x{0eaa}\x{0eab}\x{0ead}-\x{0eb0}\x{0eb2}\x{0eb3}\x{0ebd}\x{0ec0}-\x{0ec4}\x{0ec6}\x{0edc}-\x{0edf}\x{0f00}\x{0f40}-\x{0f47}\x{0f49}-\x{0f6c}\x{0f88}-\x{0f8c}\x{1000}-\x{102a}\x{103f}\x{1050}-\x{1055}\x{105a}-\x{105d}\x{1061}\x{1065}\x{1066}\x{106e}-\x{1070}\x{1075}-\x{1081}\x{108e}\x{10a0}-\x{10c5}\x{10c7}\x{10cd}\x{10d0}-\x{10fa}\x{10fc}-\x{1248}\x{124a}-\x{124d}\x{1250}-\x{1256}\x{1258}\x{125a}-\x{125d}\x{1260}-\x{1288}\x{128a}-\x{128d}\x{1290}-\x{12b0}\x{12b2}-\x{12b5}\x{12b8}-\x{12be}\x{12c0}\x{12c2}-\x{12c5}\x{12c8}-\x{12d6}\x{12d8}-\x{1310}\x{1312}-\x{1315}\x{1318}-\x{135a}\x{1380}-\x{138f}\x{13a0}-\x{13f4}\x{1401}-\x{166c}\x{166f}-\x{167f}\x{1681}-\x{169a}\x{16a0}-\x{16ea}\x{16ee}-\x{16f0}\x{1700}-\x{170c}\x{170e}-\x{1711}\x{1720}-\x{1731}\x{1740}-\x{1751}\x{1760}-\x{176c}\x{176e}-\x{1770}\x{1780}-\x{17b3}\x{17d7}\x{17dc}\x{1820}-\x{1877}\x{1880}-\x{18a8}\x{18aa}\x{18b0}-\x{18f5}\x{1900}-\x{191c}\x{1950}-\x{196d}\x{1970}-\x{1974}\x{1980}-\x{19ab}\x{19c1}-\x{19c7}\x{1a00}-\x{1a16}\x{1a20}-\x{1a54}\x{1aa7}\x{1b05}-\x{1b33}\x{1b45}-\x{1b4b}\x{1b83}-\x{1ba0}\x{1bae}\x{1baf}\x{1bba}-\x{1be5}\x{1c00}-\x{1c23}\x{1c4d}-\x{1c4f}\x{1c5a}-\x{1c7d}\x{1ce9}-\x{1cec}\x{1cee}-\x{1cf1}\x{1cf5}\x{1cf6}\x{1d00}-\x{1dbf}\x{1e00}-\x{1f15}\x{1f18}-\x{1f1d}\x{1f20}-\x{1f45}\x{1f48}-\x{1f4d}\x{1f50}-\x{1f57}\x{1f59}\x{1f5b}\x{1f5d}\x{1f5f}-\x{1f7d}\x{1f80}-\x{1fb4}\x{1fb6}-\x{1fbc}\x{1fbe}\x{1fc2}-\x{1fc4}\x{1fc6}-\x{1fcc}\x{1fd0}-\x{1fd3}\x{1fd6}-\x{1fdb}\x{1fe0}-\x{1fec}\x{1ff2}-\x{1ff4}\x{1ff6}-\x{1ffc}\x{2071}\x{207f}\x{2090}-\x{209c}\x{2102}\x{2107}\x{210a}-\x{2113}\x{2115}\x{2119}-\x{211d}\x{2124}\x{2126}\x{2128}\x{212a}-\x{212d}\x{212f}-\x{2139}\x{213c}-\x{213f}\x{2145}-\x{2149}\x{214e}\x{2160}-\x{2188}\x{2c00}-\x{2c2e}\x{2c30}-\x{2c5e}\x{2c60}-\x{2ce4}\x{2ceb}-\x{2cee}\x{2cf2}\x{2cf3}\x{2d00}-\x{2d25}\x{2d27}\x{2d2d}\x{2d30}-\x{2d67}\x{2d6f}\x{2d80}-\x{2d96}\x{2da0}-\x{2da6}\x{2da8}-\x{2dae}\x{2db0}-\x{2db6}\x{2db8}-\x{2dbe}\x{2dc0}-\x{2dc6}\x{2dc8}-\x{2dce}\x{2dd0}-\x{2dd6}\x{2dd8}-\x{2dde}\x{2e2f}\x{3005}-\x{3007}\x{3021}-\x{3029}\x{3031}-\x{3035}\x{3038}-\x{303c}\x{3041}-\x{3096}\x{309d}-\x{309f}\x{30a1}-\x{30fa}\x{30fc}-\x{30ff}\x{3105}-\x{312d}\x{3131}-\x{318e}\x{31a0}-\x{31ba}\x{31f0}-\x{31ff}\x{3400}-\x{4db5}\x{4e00}-\x{9fcc}\x{a000}-\x{a48c}\x{a4d0}-\x{a4fd}\x{a500}-\x{a60c}\x{a610}-\x{a61f}\x{a62a}\x{a62b}\x{a640}-\x{a66e}\x{a67f}-\x{a697}\x{a6a0}-\x{a6ef}\x{a717}-\x{a71f}\x{a722}-\x{a788}\x{a78b}-\x{a78e}\x{a790}-\x{a793}\x{a7a0}-\x{a7aa}\x{a7f8}-\x{a801}\x{a803}-\x{a805}\x{a807}-\x{a80a}\x{a80c}-\x{a822}\x{a840}-\x{a873}\x{a882}-\x{a8b3}\x{a8f2}-\x{a8f7}\x{a8fb}\x{a90a}-\x{a925}\x{a930}-\x{a946}\x{a960}-\x{a97c}\x{a984}-\x{a9b2}\x{a9cf}\x{aa00}-\x{aa28}\x{aa40}-\x{aa42}\x{aa44}-\x{aa4b}\x{aa60}-\x{aa76}\x{aa7a}\x{aa80}-\x{aaaf}\x{aab1}\x{aab5}\x{aab6}\x{aab9}-\x{aabd}\x{aac0}\x{aac2}\x{aadb}-\x{aadd}\x{aae0}-\x{aaea}\x{aaf2}-\x{aaf4}\x{ab01}-\x{ab06}Line truncated
|
||||
|
||||
/**
|
||||
* 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();
|
||||
|
||||
/**
|
||||
* 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
|
||||
* these keywords.
|
||||
*
|
||||
* 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();
|
||||
|
||||
/**
|
||||
* 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();
|
||||
|
||||
/**
|
||||
* List of all JavaScript operators.
|
||||
*
|
||||
* Will be loaded from /data/js/operators.txt
|
||||
*
|
||||
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
|
||||
*
|
||||
* @var string[]
|
||||
*/
|
||||
protected $operators = array();
|
||||
|
||||
/**
|
||||
* 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 --.
|
||||
* ++ & -- 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();
|
||||
|
||||
/**
|
||||
* 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 ~.
|
||||
* There can't be a newline separating ! or ~ and whatever it is negating.
|
||||
* ++ & -- 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();
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function __construct()
|
||||
{
|
||||
call_user_func_array(array('parent', '__construct'), func_get_args());
|
||||
|
||||
$dataDir = __DIR__.'/../data/js/';
|
||||
$options = FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES;
|
||||
$this->keywordsReserved = file($dataDir.'keywords_reserved.txt', $options);
|
||||
$this->keywordsBefore = file($dataDir.'keywords_before.txt', $options);
|
||||
$this->keywordsAfter = file($dataDir.'keywords_after.txt', $options);
|
||||
$this->operators = file($dataDir.'operators.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 = '';
|
||||
|
||||
/*
|
||||
* 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();
|
||||
$this->extractRegex();
|
||||
|
||||
// loop files
|
||||
foreach ($this->data as $source => $js) {
|
||||
// take out strings, comments & regex (for which we've registered
|
||||
// the regexes just a few lines earlier)
|
||||
$js = $this->replace($js);
|
||||
|
||||
$js = $this->propertyNotation($js);
|
||||
$js = $this->shortenBools($js);
|
||||
$js = $this->stripWhitespace($js);
|
||||
|
||||
// combine js: separating the scripts by a ;
|
||||
$content .= $js.";";
|
||||
}
|
||||
|
||||
// clean up leftover `;`s from the combination of multiple scripts
|
||||
$content = ltrim($content, ';');
|
||||
$content = (string) substr($content, 0, -1);
|
||||
|
||||
/*
|
||||
* 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()
|
||||
{
|
||||
// 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[0];
|
||||
|
||||
return $placeholder;
|
||||
};
|
||||
// multi-line comments
|
||||
$this->registerPattern('/\n?\/\*(!|.*?@license|.*?@preserve).*?\*\/\n?/s', $callback);
|
||||
$this->registerPattern('/\/\*.*?\*\//s', '');
|
||||
|
||||
// single-line comments
|
||||
$this->registerPattern('/\/\/.*$/m', '');
|
||||
}
|
||||
|
||||
/**
|
||||
* 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[0];
|
||||
|
||||
return $placeholder;
|
||||
};
|
||||
|
||||
// match all chars except `/` and `\`
|
||||
// `\` is allowed though, along with whatever char follows (which is the
|
||||
// one being escaped)
|
||||
// this should allow all chars, except for an unescaped `/` (= the one
|
||||
// closing the regex)
|
||||
// then also ignore bare `/` inside `[]`, where they don't need to be
|
||||
// escaped: anything inside `[]` can be ignored safely
|
||||
$pattern = '\\/(?!\*)(?:[^\\[\\/\\\\\n\r]++|(?:\\\\.)++|(?:\\[(?:[^\\]\\\\\n\r]++|(?:\\\\.)++)++\\])++)++\\/[gimuy]*';
|
||||
|
||||
// a regular expression can only be followed by a few operators or some
|
||||
// of the RegExp methods (a `\` followed by a variable or value is
|
||||
// likely part of a division, not a regex)
|
||||
$keywords = array('do', 'in', 'new', 'else', 'throw', 'yield', 'delete', 'return', 'typeof');
|
||||
$before = '([=:,;\+\-\*\/\}\(\{\[&\|!]|^|'.implode('|', $keywords).')\s*';
|
||||
$propertiesAndMethods = array(
|
||||
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#Properties_2
|
||||
'constructor',
|
||||
'flags',
|
||||
'global',
|
||||
'ignoreCase',
|
||||
'multiline',
|
||||
'source',
|
||||
'sticky',
|
||||
'unicode',
|
||||
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#Methods_2
|
||||
'compile(',
|
||||
'exec(',
|
||||
'test(',
|
||||
'toSource(',
|
||||
'toString(',
|
||||
);
|
||||
$delimiters = array_fill(0, count($propertiesAndMethods), '/');
|
||||
$propertiesAndMethods = array_map('preg_quote', $propertiesAndMethods, $delimiters);
|
||||
$after = '(?=\s*([\.,;\)\}&\|+]|\/\/|$|\.('.implode('|', $propertiesAndMethods).')))';
|
||||
$this->registerPattern('/'.$before.'\K'.$pattern.$after.'/', $callback);
|
||||
|
||||
// regular expressions following a `)` are rather annoying to detect...
|
||||
// quite often, `/` after `)` is a division operator & if it happens to
|
||||
// be followed by another one (or a comment), it is likely to be
|
||||
// confused for a regular expression
|
||||
// however, it's perfectly possible for a regex to follow a `)`: after
|
||||
// a single-line `if()`, `while()`, ... statement, for example
|
||||
// since, when they occur like that, they're always the start of a
|
||||
// statement, there's only a limited amount of ways they can be useful:
|
||||
// by calling the regex methods directly
|
||||
// if a regex following `)` is not followed by `.<property or method>`,
|
||||
// it's quite likely not a regex
|
||||
$before = '\)\s*';
|
||||
$after = '(?=\s*\.('.implode('|', $propertiesAndMethods).'))';
|
||||
$this->registerPattern('/'.$before.'\K'.$pattern.$after.'/', $callback);
|
||||
|
||||
// 1 more edge case: a regex can be followed by a lot more operators or
|
||||
// keywords if there's a newline (ASI) in between, where the operator
|
||||
// actually starts a new statement
|
||||
// (https://github.com/matthiasmullie/minify/issues/56)
|
||||
$operators = $this->getOperatorsForRegex($this->operatorsBefore, '/');
|
||||
$operators += $this->getOperatorsForRegex($this->keywordsReserved, '/');
|
||||
$after = '(?=\s*\n\s*('.implode('|', $operators).'))';
|
||||
$this->registerPattern('/'.$pattern.$after.'/', $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);
|
||||
|
||||
$operatorsBefore = $this->getOperatorsForRegex($this->operatorsBefore, '/');
|
||||
$operatorsAfter = $this->getOperatorsForRegex($this->operatorsAfter, '/');
|
||||
$operators = $this->getOperatorsForRegex($this->operators, '/');
|
||||
$keywordsBefore = $this->getKeywordsForRegex($this->keywordsBefore, '/');
|
||||
$keywordsAfter = $this->getKeywordsForRegex($this->keywordsAfter, '/');
|
||||
|
||||
// strip whitespace that ends in (or next line begin with) an operator
|
||||
// that allows statements to be broken up over multiple lines
|
||||
unset($operatorsBefore['+'], $operatorsBefore['-'], $operatorsAfter['+'], $operatorsAfter['-']);
|
||||
$content = preg_replace(
|
||||
array(
|
||||
'/('.implode('|', $operatorsBefore).')\s+/',
|
||||
'/\s+('.implode('|', $operatorsAfter).')/',
|
||||
),
|
||||
'\\1',
|
||||
$content
|
||||
);
|
||||
|
||||
// make sure + and - can't be mistaken for, or joined into ++ and --
|
||||
$content = preg_replace(
|
||||
array(
|
||||
'/(?<![\+\-])\s*([\+\-])(?![\+\-])/',
|
||||
'/(?<![\+\-])([\+\-])\s*(?![\+\-])/',
|
||||
),
|
||||
'\\1',
|
||||
$content
|
||||
);
|
||||
|
||||
// collapse whitespace around reserved words into single space
|
||||
$content = preg_replace('/(^|[;\}\s])\K('.implode('|', $keywordsBefore).')\s+/', '\\2 ', $content);
|
||||
$content = preg_replace('/\s+('.implode('|', $keywordsAfter).')(?=([;\{\s]|$))/', ' \\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.
|
||||
*/
|
||||
$operatorsDiffBefore = array_diff($operators, $operatorsBefore);
|
||||
$operatorsDiffAfter = array_diff($operators, $operatorsAfter);
|
||||
$content = preg_replace('/('.implode('|', $operatorsDiffBefore).')[^\S\n]+/', '\\1', $content);
|
||||
$content = preg_replace('/[^\S\n]+('.implode('|', $operatorsDiffAfter).')/', '\\1', $content);
|
||||
|
||||
/*
|
||||
* Whitespace after `return` can be omitted in a few occasions
|
||||
* (such as when followed by a string or regex)
|
||||
* Same for whitespace in between `)` and `{`, or between `{` and some
|
||||
* keywords.
|
||||
*/
|
||||
$content = preg_replace('/\breturn\s+(["\'\/\+\-])/', 'return$1', $content);
|
||||
$content = preg_replace('/\)\s+\{/', '){', $content);
|
||||
$content = preg_replace('/}\n(else|catch|finally)\b/', '}$1', $content);
|
||||
|
||||
/*
|
||||
* Get rid of double semicolons, except where they can be used like:
|
||||
* "for(v=1,_=b;;)", "for(v=1;;v++)" or "for(;;ja||(ja=true))".
|
||||
* I'll safeguard these double semicolons inside for-loops by
|
||||
* temporarily replacing them with an invalid condition: they won't have
|
||||
* a double semicolon and will be easy to spot to restore afterwards.
|
||||
*/
|
||||
$content = preg_replace('/\bfor\(([^;]*);;([^;]*)\)/', 'for(\\1;-;\\2)', $content);
|
||||
$content = preg_replace('/;+/', ';', $content);
|
||||
$content = preg_replace('/\bfor\(([^;]*);-;([^;]*)\)/', 'for(\\1;;\\2)', $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++);`, of `for(i in list);`
|
||||
* 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... Same goes for while loops.
|
||||
* 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);
|
||||
$content = preg_replace('/(for\([^;\{]+\s+in\s+[^;\{]+\));(\}|$)/s', '\\1;;\\2', $content);
|
||||
/*
|
||||
* Below will also keep `;` after a `do{}while();` along with `while();`
|
||||
* While these could be stripped after do-while, detecting this
|
||||
* distinction is cumbersome, so I'll play it safe and make sure `;`
|
||||
* after any kind of `while` is kept.
|
||||
*/
|
||||
$content = preg_replace('/(while\([^;\{]+\));(\}|$)/s', '\\1;;\\2', $content);
|
||||
|
||||
/*
|
||||
* We also can't strip empty else-statements. Even though they're
|
||||
* useless and probably shouldn't be in the code in the first place, we
|
||||
* shouldn't be stripping the `;` that follows it as it breaks the code.
|
||||
* We can just remove those useless else-statements completely.
|
||||
*
|
||||
* @see https://github.com/matthiasmullie/minify/issues/91
|
||||
*/
|
||||
$content = preg_replace('/else;/s', '', $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
|
||||
$delimiters = array_fill(0, count($operators), $delimiter);
|
||||
$escaped = array_map('preg_quote', $operators, $delimiters);
|
||||
|
||||
$operators = array_combine($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)\.';
|
||||
|
||||
// don't confuse = with other assignment shortcuts (e.g. +=)
|
||||
$chars = preg_quote('+-*\=<>%&|', $delimiter);
|
||||
$operators['='] = '(?<!['.$chars.'])\=';
|
||||
|
||||
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 unfixed-length look-behind
|
||||
* 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
|
||||
* unfixed-length look-behind assertions, I'm just going to do a lot of
|
||||
* separate look-behind assertions, one for each keyword.
|
||||
*/
|
||||
$keywords = $this->getKeywordsForRegex($keywords);
|
||||
$keywords = '(?<!'.implode(')(?<!', $keywords).')';
|
||||
|
||||
return preg_replace_callback('/(?<='.$previousChar.'|\])'.$keywords.'\[\s*(([\'"])[0-9]+\\2)\s*\]/u', $callback, $content);
|
||||
}
|
||||
|
||||
/**
|
||||
* Replaces true & false by !0 and !1.
|
||||
*
|
||||
* @param string $content
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function shortenBools($content)
|
||||
{
|
||||
/*
|
||||
* 'true' or 'false' could be used as property names (which may be
|
||||
* followed by whitespace) - we must not replace those!
|
||||
* Since PHP doesn't allow variable-length (to account for the
|
||||
* whitespace) lookbehind assertions, I need to capture the leading
|
||||
* character and check if it's a `.`
|
||||
*/
|
||||
$callback = function ($match) {
|
||||
if (trim($match[1]) === '.') {
|
||||
return $match[0];
|
||||
}
|
||||
|
||||
return $match[1].($match[2] === 'true' ? '!0' : '!1');
|
||||
};
|
||||
$content = preg_replace_callback('/(^|.\s*)\b(true|false)\b(?!:)/', $callback, $content);
|
||||
|
||||
// for(;;) is exactly the same as while(true), but shorter :)
|
||||
$content = preg_replace('/\bwhile\(!0\){/', 'for(;;){', $content);
|
||||
|
||||
// now make sure we didn't turn any do ... while(true) into do ... for(;;)
|
||||
preg_match_all('/\bdo\b/', $content, $dos, PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
|
||||
|
||||
// go backward to make sure positional offsets aren't altered when $content changes
|
||||
$dos = array_reverse($dos);
|
||||
foreach ($dos as $do) {
|
||||
$offsetDo = $do[0][1];
|
||||
|
||||
// find all `while` (now `for`) following `do`: one of those must be
|
||||
// associated with the `do` and be turned back into `while`
|
||||
preg_match_all('/\bfor\(;;\)/', $content, $whiles, PREG_OFFSET_CAPTURE | PREG_SET_ORDER, $offsetDo);
|
||||
foreach ($whiles as $while) {
|
||||
$offsetWhile = $while[0][1];
|
||||
|
||||
$open = substr_count($content, '{', $offsetDo, $offsetWhile - $offsetDo);
|
||||
$close = substr_count($content, '}', $offsetDo, $offsetWhile - $offsetDo);
|
||||
if ($open === $close) {
|
||||
// only restore `while` if amount of `{` and `}` are the same;
|
||||
// otherwise, that `for` isn't associated with this `do`
|
||||
$content = substr_replace($content, 'while(!0)', $offsetWhile, strlen('for(;;)'));
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return $content;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,459 @@
|
||||
<?php
|
||||
/**
|
||||
* Abstract minifier class
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
namespace MatthiasMullie\Minify;
|
||||
|
||||
use MatthiasMullie\Minify\Exceptions\IOException;
|
||||
use Psr\Cache\CacheItemInterface;
|
||||
|
||||
/**
|
||||
* Abstract minifier class.
|
||||
*
|
||||
* Please report bugs on https://github.com/matthiasmullie/minify/issues
|
||||
*
|
||||
* @package Minify
|
||||
* @author Matthias Mullie <minify@mullie.eu>
|
||||
* @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
|
||||
* @license MIT License
|
||||
*/
|
||||
abstract class Minify
|
||||
{
|
||||
/**
|
||||
* The data to be minified.
|
||||
*
|
||||
* @var string[]
|
||||
*/
|
||||
protected $data = array();
|
||||
|
||||
/**
|
||||
* Array of patterns to match.
|
||||
*
|
||||
* @var string[]
|
||||
*/
|
||||
protected $patterns = array();
|
||||
|
||||
/**
|
||||
* This array will hold content of strings and regular expressions that have
|
||||
* been extracted from the JS source code, so we can reliably match "code",
|
||||
* without having to worry about potential "code-like" characters inside.
|
||||
*
|
||||
* @var string[]
|
||||
*/
|
||||
public $extracted = array();
|
||||
|
||||
/**
|
||||
* Init the minify class - optionally, code may be passed along already.
|
||||
*/
|
||||
public function __construct(/* $data = null, ... */)
|
||||
{
|
||||
// it's possible to add the source through the constructor as well ;)
|
||||
if (func_num_args()) {
|
||||
call_user_func_array(array($this, 'add'), func_get_args());
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a file or straight-up code to be minified.
|
||||
*
|
||||
* @param string|string[] $data
|
||||
*
|
||||
* @return static
|
||||
*/
|
||||
public function add($data /* $data = null, ... */)
|
||||
{
|
||||
// bogus "usage" of parameter $data: scrutinizer warns this variable is
|
||||
// not used (we're using func_get_args instead to support overloading),
|
||||
// but it still needs to be defined because it makes no sense to have
|
||||
// this function without argument :)
|
||||
$args = array($data) + func_get_args();
|
||||
|
||||
// this method can be overloaded
|
||||
foreach ($args as $data) {
|
||||
if (is_array($data)) {
|
||||
call_user_func_array(array($this, 'add'), $data);
|
||||
continue;
|
||||
}
|
||||
|
||||
// redefine var
|
||||
$data = (string) $data;
|
||||
|
||||
// load data
|
||||
$value = $this->load($data);
|
||||
$key = ($data != $value) ? $data : count($this->data);
|
||||
|
||||
// replace CR linefeeds etc.
|
||||
// @see https://github.com/matthiasmullie/minify/pull/139
|
||||
$value = str_replace(array("\r\n", "\r"), "\n", $value);
|
||||
|
||||
// store data
|
||||
$this->data[$key] = $value;
|
||||
}
|
||||
|
||||
return $this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Minify the data & (optionally) saves it to a file.
|
||||
*
|
||||
* @param string[optional] $path Path to write the data to
|
||||
*
|
||||
* @return string The minified data
|
||||
*/
|
||||
public function minify($path = null)
|
||||
{
|
||||
$content = $this->execute($path);
|
||||
|
||||
// save to path
|
||||
if ($path !== null) {
|
||||
$this->save($content, $path);
|
||||
}
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Minify & gzip the data & (optionally) saves it to a file.
|
||||
*
|
||||
* @param string[optional] $path Path to write the data to
|
||||
* @param int[optional] $level Compression level, from 0 to 9
|
||||
*
|
||||
* @return string The minified & gzipped data
|
||||
*/
|
||||
public function gzip($path = null, $level = 9)
|
||||
{
|
||||
$content = $this->execute($path);
|
||||
$content = gzencode($content, $level, FORCE_GZIP);
|
||||
|
||||
// save to path
|
||||
if ($path !== null) {
|
||||
$this->save($content, $path);
|
||||
}
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Minify the data & write it to a CacheItemInterface object.
|
||||
*
|
||||
* @param CacheItemInterface $item Cache item to write the data to
|
||||
*
|
||||
* @return CacheItemInterface Cache item with the minifier data
|
||||
*/
|
||||
public function cache(CacheItemInterface $item)
|
||||
{
|
||||
$content = $this->execute();
|
||||
$item->set($content);
|
||||
|
||||
return $item;
|
||||
}
|
||||
|
||||
/**
|
||||
* Minify the data.
|
||||
*
|
||||
* @param string[optional] $path Path to write the data to
|
||||
*
|
||||
* @return string The minified data
|
||||
*/
|
||||
abstract public function execute($path = null);
|
||||
|
||||
/**
|
||||
* Load data.
|
||||
*
|
||||
* @param string $data Either a path to a file or the content itself
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function load($data)
|
||||
{
|
||||
// check if the data is a file
|
||||
if ($this->canImportFile($data)) {
|
||||
$data = file_get_contents($data);
|
||||
|
||||
// strip BOM, if any
|
||||
if (substr($data, 0, 3) == "\xef\xbb\xbf") {
|
||||
$data = substr($data, 3);
|
||||
}
|
||||
}
|
||||
|
||||
return $data;
|
||||
}
|
||||
|
||||
/**
|
||||
* Save to file.
|
||||
*
|
||||
* @param string $content The minified data
|
||||
* @param string $path The path to save the minified data to
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
protected function save($content, $path)
|
||||
{
|
||||
$handler = $this->openFileForWriting($path);
|
||||
|
||||
$this->writeToFile($handler, $content);
|
||||
|
||||
@fclose($handler);
|
||||
}
|
||||
|
||||
/**
|
||||
* Register a pattern to execute against the source content.
|
||||
*
|
||||
* @param string $pattern PCRE pattern
|
||||
* @param string|callable $replacement Replacement value for matched pattern
|
||||
*/
|
||||
protected function registerPattern($pattern, $replacement = '')
|
||||
{
|
||||
// study the pattern, we'll execute it more than once
|
||||
$pattern .= 'S';
|
||||
|
||||
$this->patterns[] = array($pattern, $replacement);
|
||||
}
|
||||
|
||||
/**
|
||||
* We can't "just" run some regular expressions against JavaScript: it's a
|
||||
* complex language. E.g. having an occurrence of // xyz would be a comment,
|
||||
* unless it's used within a string. Of you could have something that looks
|
||||
* like a 'string', but inside a comment.
|
||||
* The only way to accurately replace these pieces is to traverse the JS one
|
||||
* character at a time and try to find whatever starts first.
|
||||
*
|
||||
* @param string $content The content to replace patterns in
|
||||
*
|
||||
* @return string The (manipulated) content
|
||||
*/
|
||||
protected function replace($content)
|
||||
{
|
||||
$processed = '';
|
||||
$positions = array_fill(0, count($this->patterns), -1);
|
||||
$matches = array();
|
||||
|
||||
while ($content) {
|
||||
// find first match for all patterns
|
||||
foreach ($this->patterns as $i => $pattern) {
|
||||
list($pattern, $replacement) = $pattern;
|
||||
|
||||
// we can safely ignore patterns for positions we've unset earlier,
|
||||
// because we know these won't show up anymore
|
||||
if (array_key_exists($i, $positions) == false) {
|
||||
continue;
|
||||
}
|
||||
|
||||
// no need to re-run matches that are still in the part of the
|
||||
// content that hasn't been processed
|
||||
if ($positions[$i] >= 0) {
|
||||
continue;
|
||||
}
|
||||
|
||||
$match = null;
|
||||
if (preg_match($pattern, $content, $match, PREG_OFFSET_CAPTURE)) {
|
||||
$matches[$i] = $match;
|
||||
|
||||
// we'll store the match position as well; that way, we
|
||||
// don't have to redo all preg_matches after changing only
|
||||
// the first (we'll still know where those others are)
|
||||
$positions[$i] = $match[0][1];
|
||||
} else {
|
||||
// if the pattern couldn't be matched, there's no point in
|
||||
// executing it again in later runs on this same content;
|
||||
// ignore this one until we reach end of content
|
||||
unset($matches[$i], $positions[$i]);
|
||||
}
|
||||
}
|
||||
|
||||
// no more matches to find: everything's been processed, break out
|
||||
if (!$matches) {
|
||||
$processed .= $content;
|
||||
break;
|
||||
}
|
||||
|
||||
// see which of the patterns actually found the first thing (we'll
|
||||
// only want to execute that one, since we're unsure if what the
|
||||
// other found was not inside what the first found)
|
||||
$discardLength = min($positions);
|
||||
$firstPattern = array_search($discardLength, $positions);
|
||||
$match = $matches[$firstPattern][0][0];
|
||||
|
||||
// execute the pattern that matches earliest in the content string
|
||||
list($pattern, $replacement) = $this->patterns[$firstPattern];
|
||||
$replacement = $this->replacePattern($pattern, $replacement, $content);
|
||||
|
||||
// figure out which part of the string was unmatched; that's the
|
||||
// part we'll execute the patterns on again next
|
||||
$content = (string) substr($content, $discardLength);
|
||||
$unmatched = (string) substr($content, strpos($content, $match) + strlen($match));
|
||||
|
||||
// move the replaced part to $processed and prepare $content to
|
||||
// again match batch of patterns against
|
||||
$processed .= substr($replacement, 0, strlen($replacement) - strlen($unmatched));
|
||||
$content = $unmatched;
|
||||
|
||||
// first match has been replaced & that content is to be left alone,
|
||||
// the next matches will start after this replacement, so we should
|
||||
// fix their offsets
|
||||
foreach ($positions as $i => $position) {
|
||||
$positions[$i] -= $discardLength + strlen($match);
|
||||
}
|
||||
}
|
||||
|
||||
return $processed;
|
||||
}
|
||||
|
||||
/**
|
||||
* This is where a pattern is matched against $content and the matches
|
||||
* are replaced by their respective value.
|
||||
* This function will be called plenty of times, where $content will always
|
||||
* move up 1 character.
|
||||
*
|
||||
* @param string $pattern Pattern to match
|
||||
* @param string|callable $replacement Replacement value
|
||||
* @param string $content Content to match pattern against
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function replacePattern($pattern, $replacement, $content)
|
||||
{
|
||||
if (is_callable($replacement)) {
|
||||
return preg_replace_callback($pattern, $replacement, $content, 1, $count);
|
||||
} else {
|
||||
return preg_replace($pattern, $replacement, $content, 1, $count);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Strings are a pattern we need to match, in order to ignore potential
|
||||
* code-like content inside them, but we just want all of the string
|
||||
* content to remain untouched.
|
||||
*
|
||||
* This method will replace all string content with simple STRING#
|
||||
* placeholder text, so we've rid all strings from characters that may be
|
||||
* misinterpreted. Original string content will be saved in $this->extracted
|
||||
* and after doing all other minifying, we can restore the original content
|
||||
* via restoreStrings().
|
||||
*
|
||||
* @param string[optional] $chars
|
||||
* @param string[optional] $placeholderPrefix
|
||||
*/
|
||||
protected function extractStrings($chars = '\'"', $placeholderPrefix = '')
|
||||
{
|
||||
// PHP only supports $this inside anonymous functions since 5.4
|
||||
$minifier = $this;
|
||||
$callback = function ($match) use ($minifier, $placeholderPrefix) {
|
||||
// check the second index here, because the first always contains a quote
|
||||
if ($match[2] === '') {
|
||||
/*
|
||||
* Empty strings need no placeholder; they can't be confused for
|
||||
* anything else anyway.
|
||||
* But we still needed to match them, for the extraction routine
|
||||
* to skip over this particular string.
|
||||
*/
|
||||
return $match[0];
|
||||
}
|
||||
|
||||
$count = count($minifier->extracted);
|
||||
$placeholder = $match[1].$placeholderPrefix.$count.$match[1];
|
||||
$minifier->extracted[$placeholder] = $match[1].$match[2].$match[1];
|
||||
|
||||
return $placeholder;
|
||||
};
|
||||
|
||||
/*
|
||||
* The \\ messiness explained:
|
||||
* * Don't count ' or " as end-of-string if it's escaped (has backslash
|
||||
* in front of it)
|
||||
* * Unless... that backslash itself is escaped (another leading slash),
|
||||
* in which case it's no longer escaping the ' or "
|
||||
* * So there can be either no backslash, or an even number
|
||||
* * multiply all of that times 4, to account for the escaping that has
|
||||
* to be done to pass the backslash into the PHP string without it being
|
||||
* considered as escape-char (times 2) and to get it in the regex,
|
||||
* escaped (times 2)
|
||||
*/
|
||||
$this->registerPattern('/(['.$chars.'])(.*?(?<!\\\\)(\\\\\\\\)*+)\\1/s', $callback);
|
||||
}
|
||||
|
||||
/**
|
||||
* This method will restore all extracted data (strings, regexes) that were
|
||||
* replaced with placeholder text in extract*(). The original content was
|
||||
* saved in $this->extracted.
|
||||
*
|
||||
* @param string $content
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
protected function restoreExtractedData($content)
|
||||
{
|
||||
if (!$this->extracted) {
|
||||
// nothing was extracted, nothing to restore
|
||||
return $content;
|
||||
}
|
||||
|
||||
$content = strtr($content, $this->extracted);
|
||||
|
||||
$this->extracted = array();
|
||||
|
||||
return $content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if the path is a regular file and can be read.
|
||||
*
|
||||
* @param string $path
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
protected function canImportFile($path)
|
||||
{
|
||||
$parsed = parse_url($path);
|
||||
if (
|
||||
// file is elsewhere
|
||||
isset($parsed['host']) ||
|
||||
// file responds to queries (may change, or need to bypass cache)
|
||||
isset($parsed['query'])
|
||||
) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return strlen($path) < PHP_MAXPATHLEN && @is_file($path) && is_readable($path);
|
||||
}
|
||||
|
||||
/**
|
||||
* Attempts to open file specified by $path for writing.
|
||||
*
|
||||
* @param string $path The path to the file
|
||||
*
|
||||
* @return resource Specifier for the target file
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
protected function openFileForWriting($path)
|
||||
{
|
||||
if (($handler = @fopen($path, 'w')) === false) {
|
||||
throw new IOException('The file "'.$path.'" could not be opened for writing. Check if PHP has enough permissions.');
|
||||
}
|
||||
|
||||
return $handler;
|
||||
}
|
||||
|
||||
/**
|
||||
* Attempts to write $content to the file specified by $handler. $path is used for printing exceptions.
|
||||
*
|
||||
* @param resource $handler The resource to write to
|
||||
* @param string $content The content to write
|
||||
* @param string $path The path to the file (for exception printing only)
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
protected function writeToFile($handler, $content, $path = '')
|
||||
{
|
||||
if (($result = @fwrite($handler, $content)) === false || ($result < strlen($content))) {
|
||||
throw new IOException('The file "'.$path.'" could not be written to. Check your disk space and file permissions.');
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user