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<?php
/**
* Class Minify_Source
* @package Minify
*/
/**
* A content source to be minified by Minify.
*
* This allows per-source minification options and the mixing of files with
* content from other sources.
*
* @package Minify
* @author Stephen Clay <steve@mrclay.org>
*/
class Minify_Source implements Minify_SourceInterface
{
/**
* @var int time of last modification
*/
protected $lastModified;
/**
* @var callback minifier function specifically for this source.
*/
protected $minifier;
/**
* @var array minification options specific to this source.
*/
protected $minifyOptions = array();
/**
* @var string full path of file
*/
protected $filepath;
/**
* @var string HTTP Content Type (Minify requires one of the constants Minify::TYPE_*)
*/
protected $contentType;
/**
* @var string
*/
protected $content;
/**
* @var callable
*/
protected $getContentFunc;
/**
* @var string
*/
protected $id;
/**
* Create a Minify_Source
*
* In the $spec array(), you can either provide a 'filepath' to an existing
* file (existence will not be checked!) or give 'id' (unique string for
* the content), 'content' (the string content) and 'lastModified'
* (unixtime of last update).
*
* @param array $spec options
*/
public function __construct($spec)
{
if (isset($spec['filepath'])) {
$ext = pathinfo($spec['filepath'], PATHINFO_EXTENSION);
switch ($ext) {
case 'js': $this->contentType = Minify::TYPE_JS;
break;
case 'less': // fallthrough
case 'scss': // fallthrough
case 'css': $this->contentType = Minify::TYPE_CSS;
break;
case 'htm': // fallthrough
case 'html': $this->contentType = Minify::TYPE_HTML;
break;
}
$this->filepath = $spec['filepath'];
$this->id = $spec['filepath'];
// TODO ideally not touch disk in constructor
$this->lastModified = filemtime($spec['filepath']);
if (!empty($spec['uploaderHoursBehind'])) {
// offset for Windows uploaders with out of sync clocks
$this->lastModified += round($spec['uploaderHoursBehind'] * 3600);
}
} elseif (isset($spec['id'])) {
$this->id = 'id::' . $spec['id'];
if (isset($spec['content'])) {
$this->content = $spec['content'];
} else {
$this->getContentFunc = $spec['getContentFunc'];
}
$this->lastModified = isset($spec['lastModified']) ? $spec['lastModified'] : time();
}
if (isset($spec['contentType'])) {
$this->contentType = $spec['contentType'];
}
if (isset($spec['minifier'])) {
$this->setMinifier($spec['minifier']);
}
if (isset($spec['minifyOptions'])) {
$this->minifyOptions = $spec['minifyOptions'];
}
}
/**
* {@inheritdoc}
*/
public function getLastModified()
{
return $this->lastModified;
}
/**
* {@inheritdoc}
*/
public function getMinifier()
{
return $this->minifier;
}
/**
* {@inheritdoc}
*/
public function setMinifier($minifier = null)
{
if ($minifier === '') {
error_log(__METHOD__ . " cannot accept empty string. Use 'Minify::nullMinifier' or 'trim'.");
$minifier = 'Minify::nullMinifier';
}
if ($minifier !== null && !is_callable($minifier, true)) {
throw new InvalidArgumentException('minifier must be null or a valid callable');
}
$this->minifier = $minifier;
}
/**
* {@inheritdoc}
*/
public function getMinifierOptions()
{
return $this->minifyOptions;
}
/**
* {@inheritdoc}
*/
public function setMinifierOptions(array $options)
{
$this->minifyOptions = $options;
}
/**
* {@inheritdoc}
*/
public function getContentType()
{
return $this->contentType;
}
/**
* {@inheritdoc}
*/
public function getContent()
{
if (null === $this->filepath) {
if (null === $this->content) {
$content = call_user_func($this->getContentFunc, $this->id);
} else {
$content = $this->content;
}
} else {
$content = file_get_contents($this->filepath);
}
// remove UTF-8 BOM if present
if (strpos($content, "\xEF\xBB\xBF") === 0) {
return substr($content, 3);
}
return $content;
}
/**
* {@inheritdoc}
*/
public function getId()
{
return $this->id;
}
/**
* {@inheritdoc}
*/
public function getFilePath()
{
return $this->filepath;
}
/**
* {@inheritdoc}
*/
public function setupUriRewrites()
{
if ($this->filepath
&& !isset($this->minifyOptions['currentDir'])
&& !isset($this->minifyOptions['prependRelativePath'])) {
$this->minifyOptions['currentDir'] = dirname($this->filepath);
}
}
}
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