Collapse "min" into project root and get unit tests working.

Fixes #472
2025-08-10 16:14:18 +02:00 · 2015-09-28 15:36:52 -04:00
parent 2720239c8c
commit e596b35fc4
89 changed files with 133 additions and 94 deletions
--- a/lib/Minify/ClosureCompiler.php
+++ b/lib/Minify/ClosureCompiler.php
@@ -0,0 +1,139 @@
+<?php
+/**
+ * Class Minify_ClosureCompiler
+ * @package Minify
+ */
+
+/**
+ * Compress Javascript using the Closure Compiler
+ *
+ * You must set $jarFile and $tempDir before calling the minify functions.
+ * Also, depending on your shell's environment, you may need to specify
+ * the full path to java in $javaExecutable or use putenv() to setup the
+ * Java environment.
+ *
+ * <code>
+ * Minify_ClosureCompiler::$jarFile = '/path/to/closure-compiler-20120123.jar';
+ * Minify_ClosureCompiler::$tempDir = '/tmp';
+ * $code = Minify_ClosureCompiler::minify(
+ *   $code,
+ *   array('compilation_level' => 'SIMPLE_OPTIMIZATIONS')
+ * );
+ *
+ * --compilation_level WHITESPACE_ONLY, SIMPLE_OPTIMIZATIONS, ADVANCED_OPTIMIZATIONS
+ *
+ * </code>
+ *
+ * @todo unit tests, $options docs
+ * @todo more options support (or should just passthru them all?)
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ * @author Elan Ruusamäe <glen@delfi.ee>
+ */
+class Minify_ClosureCompiler {
+
+    const OPTION_CHARSET = 'charset';
+    const OPTION_COMPILATION_LEVEL = 'compilation_level';
+
+    public static $isDebug = false;
+
+    /**
+     * Filepath of the Closure Compiler jar file. This must be set before
+     * calling minifyJs().
+     *
+     * @var string
+     */
+    public static $jarFile = null;
+
+    /**
+     * Writable temp directory. This must be set before calling minifyJs().
+     *
+     * @var string
+     */
+    public static $tempDir = null;
+
+    /**
+     * Filepath of "java" executable (may be needed if not in shell's PATH)
+     *
+     * @var string
+     */
+    public static $javaExecutable = 'java';
+
+    /**
+     * Minify a Javascript string
+     *
+     * @param string $js
+     *
+     * @param array $options (verbose is ignored)
+     *
+     * @see https://code.google.com/p/closure-compiler/source/browse/trunk/README
+     *
+     * @return string
+     *
+     * @throws Minify_ClosureCompiler_Exception
+     */
+    public static function minify($js, $options = array())
+    {
+        self::_prepare();
+        if (! ($tmpFile = tempnam(self::$tempDir, 'cc_'))) {
+            throw new Minify_ClosureCompiler_Exception('Minify_ClosureCompiler : could not create temp file in "'.self::$tempDir.'".');
+        }
+        file_put_contents($tmpFile, $js);
+        $cmd = self::_getCmd($options, $tmpFile);
+        exec($cmd, $output, $result_code);
+        unlink($tmpFile);
+        if ($result_code != 0) {
+            $message = 'Minify_ClosureCompiler : Closure Compiler execution failed.';
+            if (self::$isDebug) { 
+                exec($cmd . ' 2>&1', $error);
+                if ($error) {
+                    $message .= "\nReason:\n" . join("\n", $error);
+                }
+            } 
+            throw new Minify_ClosureCompiler_Exception($message);
+        }
+        return implode("\n", $output);
+    }
+
+    private static function _getCmd($userOptions, $tmpFile)
+    {
+        $o = array_merge(
+            array(
+                self::OPTION_CHARSET => 'utf-8',
+                self::OPTION_COMPILATION_LEVEL => 'SIMPLE_OPTIMIZATIONS',
+            ),
+            $userOptions
+        );
+        $charsetOption = $o[self::OPTION_CHARSET];
+        $cmd = self::$javaExecutable . ' -jar ' . escapeshellarg(self::$jarFile)
+             . (preg_match('/^[\\da-zA-Z0-9\\-]+$/', $charsetOption)
+                ? " --charset {$charsetOption}"
+                : '');
+
+        foreach (array(self::OPTION_COMPILATION_LEVEL) as $opt) {
+            if ($o[$opt]) {
+                $cmd .= " --{$opt} ". escapeshellarg($o[$opt]);
+            }
+        }
+        return $cmd . ' ' . escapeshellarg($tmpFile);
+    }
+
+    private static function _prepare()
+    {
+        if (! is_file(self::$jarFile)) {
+            throw new Minify_ClosureCompiler_Exception('Minify_ClosureCompiler : $jarFile('.self::$jarFile.') is not a valid file.');
+        }
+        if (! is_readable(self::$jarFile)) {
+            throw new Minify_ClosureCompiler_Exception('Minify_ClosureCompiler : $jarFile('.self::$jarFile.') is not readable.');
+        }
+        if (! is_dir(self::$tempDir)) {
+            throw new Minify_ClosureCompiler_Exception('Minify_ClosureCompiler : $tempDir('.self::$tempDir.') is not a valid direcotry.');
+        }
+        if (! is_writable(self::$tempDir)) {
+            throw new Minify_ClosureCompiler_Exception('Minify_ClosureCompiler : $tempDir('.self::$tempDir.') is not writable.');
+        }
+    }
+}
+
+class Minify_ClosureCompiler_Exception extends Exception {}