PHP HTTP_Encoder::getAcceptedEncoding方法代码示例

function test_HTTP_Encoder()
{
    global $thisDir;
    HTTP_Encoder::$encodeToIe6 = true;
    $methodTests = array(array('ua' => 'Any browser', 'ae' => 'compress, x-gzip', 'exp' => array('gzip', 'x-gzip'), 'desc' => 'recognize "x-gzip" as gzip'), array('ua' => 'Any browser', 'ae' => 'compress, x-gzip;q=0.5', 'exp' => array('gzip', 'x-gzip'), 'desc' => 'gzip w/ non-zero q'), array('ua' => 'Any browser', 'ae' => 'compress, x-gzip;q=0', 'exp' => array('compress', 'compress'), 'desc' => 'gzip w/ zero q'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)', 'ae' => 'gzip, deflate', 'exp' => array('', ''), 'desc' => 'IE6 w/o "enhanced security"'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)', 'ae' => 'gzip, deflate', 'exp' => array('deflate', 'deflate'), 'desc' => 'IE6 w/ "enhanced security"'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.01)', 'ae' => 'gzip, deflate', 'exp' => array('', ''), 'desc' => 'IE5.5'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; en) Opera 9.25', 'ae' => 'gzip,deflate', 'exp' => array('deflate', 'deflate'), 'desc' => 'Opera identifying as IE6'));
    foreach ($methodTests as $test) {
        $_SERVER['HTTP_USER_AGENT'] = $test['ua'];
        $_SERVER['HTTP_ACCEPT_ENCODING'] = $test['ae'];
        $exp = $test['exp'];
        $ret = HTTP_Encoder::getAcceptedEncoding();
        $passed = assertTrue($exp == $ret, 'HTTP_Encoder : ' . $test['desc']);
        if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
            echo "\n--- AE | UA = {$test['ae']} | {$test['ua']}\n";
            echo "Expected = " . preg_replace('/\\s+/', ' ', var_export($exp, 1)) . "\n";
            echo "Returned = " . preg_replace('/\\s+/', ' ', var_export($ret, 1)) . "\n\n";
        }
    }
    HTTP_Encoder::$encodeToIe6 = false;
    $methodTests = array(array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)', 'ae' => 'gzip, deflate', 'exp' => array('', ''), 'desc' => 'IE6 w/ "enhanced security"'));
    foreach ($methodTests as $test) {
        $_SERVER['HTTP_USER_AGENT'] = $test['ua'];
        $_SERVER['HTTP_ACCEPT_ENCODING'] = $test['ae'];
        $exp = $test['exp'];
        $ret = HTTP_Encoder::getAcceptedEncoding();
        $passed = assertTrue($exp == $ret, 'HTTP_Encoder : ' . $test['desc']);
        if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
            echo "\n--- AE | UA = {$test['ae']} | {$test['ua']}\n";
            echo "Expected = " . preg_replace('/\\s+/', ' ', var_export($exp, 1)) . "\n";
            echo "Returned = " . preg_replace('/\\s+/', ' ', var_export($ret, 1)) . "\n\n";
        }
    }
    if (!function_exists('gzdeflate')) {
        echo "!WARN: HTTP_Encoder : Zlib support is not present in PHP. Encoding cannot be performed/tested.\n";
        return;
    }
    // test compression of varied content (HTML,JS, & CSS)
    $variedContent = file_get_contents($thisDir . '/_test_files/html/before.html') . file_get_contents($thisDir . '/_test_files/css/subsilver.css') . file_get_contents($thisDir . '/_test_files/js/jquery-1.2.3.js');
    $variedLength = strlen($variedContent);
    $encodingTests = array(array('method' => 'deflate', 'inv' => 'gzinflate', 'exp' => 32157), array('method' => 'gzip', 'inv' => '_gzdecode', 'exp' => 32175), array('method' => 'compress', 'inv' => 'gzuncompress', 'exp' => 32211));
    foreach ($encodingTests as $test) {
        $e = new HTTP_Encoder(array('content' => $variedContent, 'method' => $test['method']));
        $e->encode(9);
        $ret = strlen($e->getContent());
        // test uncompression
        $roundTrip = @call_user_func($test['inv'], $e->getContent());
        $desc = "HTTP_Encoder : {$test['method']} : uncompress possible";
        $passed = assertTrue($variedContent == $roundTrip, $desc);
        // test expected compressed size
        $desc = "HTTP_Encoder : {$test['method']} : compressed to " . sprintf('%4.2f%% of original', $ret / $variedLength * 100);
        $passed = assertTrue(abs($ret - $test['exp']) < 100, $desc);
        if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
            echo "\n--- {$test['method']}: expected bytes: ", "{$test['exp']}. Returned: {$ret} ", "(off by " . abs($ret - $test['exp']) . " bytes)\n\n";
        }
    }
}

//.........这里部分代码省略.........
     }
     // set up controller sources and mix remaining options with
     // controller defaults
     $options = $controller->setupSources($options);
     $options = $controller->analyzeSources($options);
     self::$_options = $controller->mixInDefaultOptions($options);
     // check request validity
     if (!$controller->sources) {
         // invalid request!
         if (!self::$_options['quiet']) {
             self::_errorExit(self::$_options['badRequestHeader'], self::URL_DEBUG);
         } else {
             list(, $statusCode) = explode(' ', self::$_options['badRequestHeader']);
             return array('success' => false, 'statusCode' => (int) $statusCode, 'content' => '', 'headers' => array());
         }
     }
     self::$_controller = $controller;
     if (self::$_options['debug']) {
         self::_setupDebug($controller->sources);
         self::$_options['maxAge'] = 0;
     }
     // determine encoding
     if (self::$_options['encodeOutput']) {
         $sendVary = true;
         if (self::$_options['encodeMethod'] !== null) {
             // controller specifically requested this
             $contentEncoding = self::$_options['encodeMethod'];
         } else {
             // sniff request header
             require_once 'HTTP/Encoder.php';
             // depending on what the client accepts, $contentEncoding may be
             // 'x-gzip' while our internal encodeMethod is 'gzip'. Calling
             // getAcceptedEncoding(false, false) leaves out compress and deflate as options.
             list(self::$_options['encodeMethod'], $contentEncoding) = HTTP_Encoder::getAcceptedEncoding(false, false);
             $sendVary = !HTTP_Encoder::isBuggyIe();
         }
     } else {
         self::$_options['encodeMethod'] = '';
         // identity (no encoding)
     }
     // check client cache
     require_once 'HTTP/ConditionalGet.php';
     $cgOptions = array('lastModifiedTime' => self::$_options['lastModifiedTime'], 'isPublic' => self::$_options['isPublic'], 'encoding' => self::$_options['encodeMethod']);
     if (self::$_options['maxAge'] > 0) {
         $cgOptions['maxAge'] = self::$_options['maxAge'];
     } elseif (self::$_options['debug']) {
         $cgOptions['invalidate'] = true;
     }
     $cg = new HTTP_ConditionalGet($cgOptions);
     if ($cg->cacheIsValid) {
         // client's cache is valid
         if (!self::$_options['quiet']) {
             $cg->sendHeaders();
             return;
         } else {
             return array('success' => true, 'statusCode' => 304, 'content' => '', 'headers' => $cg->getHeaders());
         }
     } else {
         // client will need output
         $headers = $cg->getHeaders();
         unset($cg);
     }
     if (self::$_options['contentType'] === self::TYPE_CSS && self::$_options['rewriteCssUris']) {
         foreach ($controller->sources as $key => $source) {
             if ($source->filepath && !isset($source->minifyOptions['currentDir']) && !isset($source->minifyOptions['prependRelativePath'])) {
                 $source->minifyOptions['currentDir'] = dirname($source->filepath);

<?php

require __DIR__ . '/../../bootstrap.php';
// emulate regularly updating document
$every = 20;
$lastModified = round(time() / $every) * $every - $every;
list($enc, ) = HTTP_Encoder::getAcceptedEncoding();
$cg = new HTTP_ConditionalGet(array('lastModifiedTime' => $lastModified, 'encoding' => $enc));
$cg->sendHeaders();
if ($cg->cacheIsValid) {
    // we're done
    exit;
}
// output encoded content
$title = 'ConditionalGet + Encoder';
$explain = '
<p>Using ConditionalGet and Encoder is straightforward. First impliment the
ConditionalGet, then if the cache is not valid, encode and send the content</p>
<p>This script emulates a document that changes every ' . $every . ' seconds.
<br>This is version: ' . date('r', $lastModified) . '</p>
';
require '_include.php';
$content = get_content(array('title' => $title, 'explain' => $explain));
$he = new HTTP_Encoder(array('content' => get_content(array('title' => $title, 'explain' => $explain))));
$he->encode();
// usually you would just $he->sendAll(), but here we want to emulate slow
// connection
$he->sendHeaders();
send_slowly($he->getContent());

//.........这里部分代码省略.........
     // set up controller sources and mix remaining options with
     // controller defaults
     $options = $controller->setupSources($options);
     $options = $controller->analyzeSources($options);
     self::$_options = $controller->mixInDefaultOptions($options);
     // check request validity
     if (!$controller->sources) {
         // invalid request!
         if (!self::$_options['quiet']) {
             header(self::$_options['badRequestHeader']);
             echo self::$_options['badRequestHeader'];
             return;
         } else {
             list(, $statusCode) = explode(' ', self::$_options['badRequestHeader']);
             return array('success' => false, 'statusCode' => (int) $statusCode, 'content' => '', 'headers' => array());
         }
     }
     self::$_controller = $controller;
     if (self::$_options['debug']) {
         self::_setupDebug($controller->sources);
         self::$_options['maxAge'] = 0;
     }
     // determine encoding
     if (self::$_options['encodeOutput']) {
         if (self::$_options['encodeMethod'] !== null) {
             // controller specifically requested this
             $contentEncoding = self::$_options['encodeMethod'];
         } else {
             // sniff request header
             require_once W3TC_LIB_MINIFY_DIR . '/HTTP/Encoder.php';
             // depending on what the client accepts, $contentEncoding may be
             // 'x-gzip' while our internal encodeMethod is 'gzip'. Calling
             // getAcceptedEncoding(false, false) leaves out compress and deflate as options.
             list(self::$_options['encodeMethod'], $contentEncoding) = HTTP_Encoder::getAcceptedEncoding(self::$_options['encodeOutput']);
         }
     } else {
         self::$_options['encodeMethod'] = '';
         // identity (no encoding)
     }
     // check client cache
     require_once W3TC_LIB_MINIFY_DIR . '/HTTP/ConditionalGet.php';
     $cgOptions = array('cacheHeaders' => self::$_options['cacheHeaders'], 'lastModifiedTime' => self::$_options['lastModifiedTime'], 'isPublic' => self::$_options['isPublic'], 'encoding' => self::$_options['encodeMethod']);
     if (self::$_options['maxAge'] > 0) {
         $cgOptions['maxAge'] = self::$_options['maxAge'];
     }
     $cg = new HTTP_ConditionalGet($cgOptions);
     if ($cg->cacheIsValid) {
         // client's cache is valid
         if (!self::$_options['quiet']) {
             $cg->sendHeaders();
             return;
         } else {
             return array('success' => true, 'statusCode' => 304, 'content' => '', 'headers' => $cg->getHeaders());
         }
     } else {
         // client will need output
         $headers = $cg->getHeaders();
         unset($cg);
     }
     if (self::$_options['contentType'] === self::TYPE_CSS) {
         reset($controller->sources);
         while (list($key, $source) = each($controller->sources)) {
             if (self::$_options['rewriteCssUris'] && $source->filepath && !isset($source->minifyOptions['currentDir']) && !isset($source->minifyOptions['prependRelativePath'])) {
                 $source->minifyOptions['currentDir'] = dirname($source->filepath);
             }
             $source->minifyOptions['processCssImports'] = self::$_options['processCssImports'];

//.........这里部分代码省略.........
 public function serve(Minify_ControllerInterface $controller, $options = array())
 {
     $options = array_merge($this->getDefaultOptions(), $options);
     $config = $controller->createConfiguration($options);
     $this->sources = $config->getSources();
     $this->selectionId = $config->getSelectionId();
     $this->options = $this->analyzeSources($config->getOptions());
     // check request validity
     if (!$this->sources) {
         // invalid request!
         if (!$this->options['quiet']) {
             $this->errorExit($this->options['badRequestHeader'], self::URL_DEBUG);
         } else {
             list(, $statusCode) = explode(' ', $this->options['badRequestHeader']);
             return array('success' => false, 'statusCode' => (int) $statusCode, 'content' => '', 'headers' => array());
         }
     }
     $this->controller = $controller;
     if ($this->options['debug']) {
         $this->setupDebug();
         $this->options['maxAge'] = 0;
     }
     // determine encoding
     if ($this->options['encodeOutput']) {
         $sendVary = true;
         if ($this->options['encodeMethod'] !== null) {
             // controller specifically requested this
             $contentEncoding = $this->options['encodeMethod'];
         } else {
             // sniff request header
             // depending on what the client accepts, $contentEncoding may be
             // 'x-gzip' while our internal encodeMethod is 'gzip'. Calling
             // getAcceptedEncoding(false, false) leaves out compress and deflate as options.
             list($this->options['encodeMethod'], $contentEncoding) = HTTP_Encoder::getAcceptedEncoding(false, false);
             $sendVary = !HTTP_Encoder::isBuggyIe();
         }
     } else {
         $this->options['encodeMethod'] = '';
         // identity (no encoding)
     }
     // check client cache
     $cgOptions = array('lastModifiedTime' => $this->options['lastModifiedTime'], 'isPublic' => $this->options['isPublic'], 'encoding' => $this->options['encodeMethod']);
     if ($this->options['maxAge'] > 0) {
         $cgOptions['maxAge'] = $this->options['maxAge'];
     } elseif ($this->options['debug']) {
         $cgOptions['invalidate'] = true;
     }
     $cg = new HTTP_ConditionalGet($cgOptions);
     if ($cg->cacheIsValid) {
         // client's cache is valid
         if (!$this->options['quiet']) {
             $cg->sendHeaders();
             return;
         } else {
             return array('success' => true, 'statusCode' => 304, 'content' => '', 'headers' => $cg->getHeaders());
         }
     } else {
         // client will need output
         $headers = $cg->getHeaders();
         unset($cg);
     }
     if ($this->options['contentType'] === self::TYPE_CSS && $this->options['rewriteCssUris']) {
         $this->setupUriRewrites();
     }
     if ($this->options['concatOnly']) {
         $this->options['minifiers'][self::TYPE_JS] = false;