+ def __unicode__(self):
+ """
+ Attempts to interpret current contents of buffer as UTF-8 string and convert it to unicode
+ """
+ return str(self).decode("utf-8")
+ def read(self,length=None):
+ """
+ Reads data from readble BIO. For test purposes.
+ @param length - if specifed, limits amount of data read. If not BIO is read until end of buffer
+ """
+ if not length is None:
+ if not isinstance(length,(int,long)):
+ raise TypeError("length to read should be number")
+ buf=create_string_buffer(length)
+ readbytes=libcrypto.BIO_read(self.bio,buf,length)
+ if readbytes==-2:
+ raise NotImplementedError("Function is not supported by this BIO")
+ if readbytes==-1:
+ raise IOError
+ if readbytes==0:
+ return ""
+ return buf.raw[:readbytes]
+ else:
+ buf=create_string_buffer(1024)
+ out=""
+ r=1
+ while r>0:
+ r=libcrypto.BIO_read(self.bio,buf,1024)
+ if r==-2:
+ raise NotImplementedError("Function is not supported by this BIO")
+ if r==-1:
+ raise IOError
+ if (r>0):
+ out+=buf.raw[:r]
+ return out
+
+ def write(self,data):
+ """
+ Writes data to writable bio. For test purposes
+ """
+ if isinstance(data,unicode):
+ data=data.encode("utf-8")
+ r=libcrypto.BIO_write(self.bio,data,len(data))
+ if r==-2:
+ raise NotImplementedError("Function not supported by this BIO")
+ if r<len(data):
+ raise IOError("Not all data were successfully written")
+ def reset(self):
+ """
+ Resets the read-only bio to start and discards all data from writable bio
+ """
+ libcrypto.BIO_ctrl(self.bio,1,0,None)
+
+__all__ = ['Membio']