Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Helpviewer/Network/NetworkReply.py	Mon Dec 28 16:03:33 2009 +0000
@@ -0,0 +1,65 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a network reply object for special data.
+"""
+
+from PyQt4.QtCore import *
+from PyQt4.QtNetwork import QNetworkReply, QNetworkRequest
+
+class NetworkReply(QNetworkReply):
+    """
+    Class implementing a QNetworkReply subclass for special data.
+    """
+    def __init__(self, request, fileData, mimeType):
+        """
+        Constructor
+        
+        @param request reference to the request object (QNetworkRequest)
+        @param fileData reference to the data buffer (QByteArray)
+        @param mimeType for the reply (string)
+        """
+        QNetworkReply.__init__(self)
+        
+        self.__data = fileData
+        
+        self.setRequest(request)
+        self.setOpenMode(QIODevice.ReadOnly)
+        
+        self.setHeader(QNetworkRequest.ContentTypeHeader, QVariant(mimeType))
+        self.setHeader(QNetworkRequest.ContentLengthHeader, 
+                       QVariant(QByteArray.number(fileData.length())))
+        QTimer.singleShot(0, self, SIGNAL("metaDataChanged()"))
+        QTimer.singleShot(0, self, SIGNAL("readyRead()"))
+    
+    def abort(self):
+        """
+        Public slot to abort the operation.
+        """
+        # do nothing
+        pass
+    
+    def bytesAvailable(self):
+        """
+        Public method to determined the bytes available for being read.
+        
+        @return bytes available (integer)
+        """
+        return self.__data.length() + QNetworkReply.bytesAvailable(self)
+    
+    def readData(self, maxlen):
+        """
+        Protected method to retrieve data from the reply object.
+        
+        @param maxlen maximum number of bytes to read (integer)
+        @return string containing the data (string)
+        """
+        len_ = min(maxlen, self.__data.length())
+        buffer = str(self.__data[:len_])
+        self.__data.remove(0, len_)
+        if self.__data.length() == 0:
+            QTimer.singleShot(0, self, SIGNAL("finished()"))
+        return buffer