Mercurial Repositories > eric / file comparison
comparison: Helpviewer/Network/NetworkReply.py
Helpviewer/Network/NetworkReply.py
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2009 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a network reply object for special data. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import * | |
| 11 from PyQt4.QtNetwork import QNetworkReply, QNetworkRequest | |
| 12 | |
| 13 class NetworkReply(QNetworkReply): | |
| 14 """ | |
| 15 Class implementing a QNetworkReply subclass for special data. | |
| 16 """ | |
| 17 def __init__(self, request, fileData, mimeType): | |
| 18 """ | |
| 19 Constructor | |
| 20 | |
| 21 @param request reference to the request object (QNetworkRequest) | |
| 22 @param fileData reference to the data buffer (QByteArray) | |
| 23 @param mimeType for the reply (string) | |
| 24 """ | |
| 25 QNetworkReply.__init__(self) | |
| 26 | |
| 27 self.__data = fileData | |
| 28 | |
| 29 self.setRequest(request) | |
| 30 self.setOpenMode(QIODevice.ReadOnly) | |
| 31 | |
| 32 self.setHeader(QNetworkRequest.ContentTypeHeader, QVariant(mimeType)) | |
| 33 self.setHeader(QNetworkRequest.ContentLengthHeader, | |
| 34 QVariant(QByteArray.number(fileData.length()))) | |
| 35 QTimer.singleShot(0, self, SIGNAL("metaDataChanged()")) | |
| 36 QTimer.singleShot(0, self, SIGNAL("readyRead()")) | |
| 37 | |
| 38 def abort(self): | |
| 39 """ | |
| 40 Public slot to abort the operation. | |
| 41 """ | |
| 42 # do nothing | |
| 43 pass | |
| 44 | |
| 45 def bytesAvailable(self): | |
| 46 """ | |
| 47 Public method to determined the bytes available for being read. | |
| 48 | |
| 49 @return bytes available (integer) | |
| 50 """ | |
| 51 return self.__data.length() + QNetworkReply.bytesAvailable(self) | |
| 52 | |
| 53 def readData(self, maxlen): | |
| 54 """ | |
| 55 Protected method to retrieve data from the reply object. | |
| 56 | |
| 57 @param maxlen maximum number of bytes to read (integer) | |
| 58 @return string containing the data (string) | |
| 59 """ | |
| 60 len_ = min(maxlen, self.__data.length()) | |
| 61 buffer = str(self.__data[:len_]) | |
| 62 self.__data.remove(0, len_) | |
| 63 if self.__data.length() == 0: | |
| 64 QTimer.singleShot(0, self, SIGNAL("finished()")) | |
| 65 return buffer |
