add a cli download tool

Author: inhere

src/utils/Download.php

@@ -0,0 +1,153 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: inhere
+ * Date: 2017-03-31
+ * Time: 19:08
+ */
+
+namespace inhere\console\utils;
+
+/**
+ * Class Download
+ * @package inhere\console\utils
+ */
+class Download
+{
+    /*
+     OUT:
+    Connected...
+    Mime-type: text/html; charset=utf-8
+    Being redirected to: http://no2.php.net/distributions/php-5.2.5.tar.bz2
+    Connected...
+    Filesize: 7773024
+    Mime-type: application/octet-stream
+    [========================================>                                                           ] 40% (3076/7590 kb)
+     */
+
+    /**
+     * @param $code
+     * @param $severity
+     * @param $message
+     * @param $messageCode
+     * @param $transferredBytes
+     * @param $maxBytes
+     */
+    public static function stream_notification_callback($code, $severity, $message, $messageCode, $transferredBytes, $maxBytes)
+    {
+        static $fileSize = null;
+
+        switch($code) {
+            case STREAM_NOTIFY_RESOLVE:
+            case STREAM_NOTIFY_AUTH_REQUIRED:
+            case STREAM_NOTIFY_COMPLETED:
+            case STREAM_NOTIFY_FAILURE:
+            case STREAM_NOTIFY_AUTH_RESULT:
+                /* Ignore */
+                break;
+
+            case STREAM_NOTIFY_REDIRECTED:
+                echo "Being redirected to: ", $message, "\n";
+                break;
+
+            case STREAM_NOTIFY_CONNECT:
+                echo "Connected...\n";
+                break;
+
+            case STREAM_NOTIFY_FILE_SIZE_IS:
+                $fileSize = $maxBytes;
+                echo "FileSize: ", $fileSize, "\n";
+                break;
+
+            case STREAM_NOTIFY_MIME_TYPE_IS:
+                echo "Mime-type: ", $message, "\n";
+                break;
+
+            case STREAM_NOTIFY_PROGRESS:
+                if ($transferredBytes > 0) {
+                    if (!isset($fileSize)) {
+                        printf("\rUnknown fileSize.. %2d kb done..", $transferredBytes/1024);
+                    } else {
+                        $length = (int)(($transferredBytes/$fileSize)*100);
+                        printf("\r[%-100s] %d%% (%2d/%2d kb)", str_repeat("=", $length). ">", $length, ($transferredBytes/1024), $fileSize/1024);
+                    }
+                }
+                
+                break;
+        }
+    }
+
+    /*
+     OUT:
+    Connected...
+    Found the mime-type: text/html; charset=utf-8
+    Being redirected to: http://no.php.net/contact
+    Connected...
+    Got the fileSize: 0
+    Found the mime-type: text/html; charset=utf-8
+    Being redirected to: http://no.php.net/contact.php
+    Connected...
+    Got the fileSize: 4589
+    Found the mime-type: text/html;charset=utf-8
+    Made some progress, downloaded 0 so far
+    Made some progress, downloaded 0 so far
+    Made some progress, downloaded 0 so far
+    Made some progress, downloaded 1440 so far
+    ... ...
+     */
+    public static function stream_notification_callback1($code, $severity, $message, $messageCode, $transferredBytes, $maxBytes)
+    {
+        switch($code) {
+            case STREAM_NOTIFY_RESOLVE:
+            case STREAM_NOTIFY_AUTH_REQUIRED:
+            case STREAM_NOTIFY_COMPLETED:
+            case STREAM_NOTIFY_FAILURE:
+            case STREAM_NOTIFY_AUTH_RESULT:
+                var_dump($code, $severity, $message, $messageCode, $transferredBytes, $maxBytes);
+                /* Ignore */
+                break;
+
+            case STREAM_NOTIFY_REDIRECTED:
+                echo "Being redirected to: ", $message;
+                break;
+
+            case STREAM_NOTIFY_CONNECT:
+                echo "Connected...";
+                break;
+
+            case STREAM_NOTIFY_FILE_SIZE_IS:
+                echo "Got the fileSize: ", $maxBytes;
+                break;
+
+            case STREAM_NOTIFY_MIME_TYPE_IS:
+                echo "Found the mime-type: ", $message;
+                break;
+
+            case STREAM_NOTIFY_PROGRESS:
+                echo "Made some progress, downloaded ", $transferredBytes, " so far";
+                break;
+        }
+        echo "\n";
+    }
+
+    // php down.php <http://example.com/file> <localFile>
+    public static function down($url, $saveTo, $type = 1)
+    {
+        $ctx = stream_context_create();
+        stream_context_set_params($ctx, [
+            "notification" => "stream_notification_callback"
+        ]);
+
+        $fp = fopen($url, "r", false, $ctx);
+
+        if (is_resource($fp) && file_put_contents($saveTo, $fp)) {
+            echo "\nDone!\n";
+            exit(0);
+        }
+
+        $err = error_get_last();
+        echo "\nErrrrrorr...\n", $err["message"], "\n";
+        exit(1);
+    }
+
+}