first commit

ZeedFramework/library/Firestone/Tools/QmeStreamAdapter.php

@@ -0,0 +1,132 @@
+<?php
+/**
+ * QmeStreamAdapter
+ * 
+ * @package Firestone_Tools
+ * @since 2010-8-26
+ * @author wida<wida@foxmail.com>
+ */
+class Firestone_Tools_QmeStreamAdapter
+{
+    
+    /**
+     * 
+     * @handle
+     */
+    private $fileHandle = null;
+    
+    /**
+     * 模式
+     * @return QmeStreamAdapter
+     */
+    public static function instance($serverno)
+    {
+        static $object = array();
+        if (!isset($object[$serverno]))
+            $object[$serverno] = new self();
+        
+        return $object[$serverno];
+    }
+    
+    /**
+     * 
+     * 初始化handle
+     * @param handle $fileHandle
+     * @return QmeStreamAdapter
+     */
+    public function setHandle($fileHandle)
+    {
+        $this->fileHandle = $fileHandle;
+        stream_set_timeout($this->fileHandle, 1);
+        return $this;
+    }
+    
+    /**
+     * 
+     * @param string $packString 二进制包
+     * @return Firestone_Tools_QmeStreamAdapter
+     */
+    public function send($packString, $length = null)
+    {
+        if (is_null($length)) {
+            fwrite($this->fileHandle, $packString);
+        } else {
+            fwrite($this->fileHandle, $packString, $length);
+        }
+        
+        return $this;
+    }
+    
+    /**
+     * @param int $size
+     * @param srting|null $format
+     * @return string
+     */
+    public function read($size, $format = null)
+    {
+        
+        if (is_null($format) || empty($format)) {
+            return fread($this->fileHandle, $size);
+        } else {
+            $str = fread($this->fileHandle, $size);
+            if (empty($str))
+                return; //探测header时str可能为空  为空时不处理放回
+            return unpack($format, $str);
+        }
+    }
+    
+    /**
+     * 移动文件指针
+     * @param int $offset                            偏移量
+     * @param SEEK_SET|SEEK_CUR|SEEK_END $whence  基准位置
+     * @return QmeStreamAdapter
+     */
+    public function seek($offset, $whence = SEEK_SET)
+    {
+        fseek($this->fileHandle, $offset, $whence);
+        return $this;
+    }
+    
+    /**
+     * 重置文件指针到文件头
+     * @return QmeStreamAdapter
+     */
+    public function frewind()
+    {
+        rewind($this->fileHandle);
+        return $this;
+    }
+    
+    /**
+     * 获取文件大小
+     * @return int 文件大小
+     */
+    public function getSize()
+    {
+        $whence = fseek($this->fileHandle, 0, SEEK_CUR);
+        fseek($this->fileHandle, 0, SEEK_END);
+        $cur = ftell($this->fileHandle);
+        fseek($this->fileHandle, $whence, SEEK_SET);
+        return $cur;
+    }
+    
+    /**
+     * 返回文件当前指针
+     * @return int 
+     */
+    public function tell()
+    {
+        return ftell($this->fileHandle);
+    }
+    
+    /**
+     * destruct
+     */
+    function __destruct()
+    {
+        fclose($this->fileHandle);
+    }
+
+}
+
+// End ^ Native EOL ^ encoding