diff options
Diffstat (limited to 'Lib/io.py')
| -rw-r--r-- | Lib/io.py | 7 |
1 files changed, 6 insertions, 1 deletions
@@ -17,6 +17,7 @@ XXX need to support 1 meaning line-buffered XXX don't use assert to validate input requirements XXX whenever an argument is None, use the default value XXX read/write ops should check readable/writable +XXX buffered readinto should work with arbitrary buffer objects """ __author__ = ("Guido van Rossum <guido@python.org>, " @@ -205,6 +206,7 @@ class IOBase: This is a no-op for read-only and non-blocking streams. """ + # XXX Should this return the number of bytes written??? __closed = False @@ -431,6 +433,7 @@ class BufferedIOBase(IOBase): Raises BlockingIOError if the underlying raw stream has no data at the moment. """ + # XXX This ought to work with anything that supports the buffer API data = self.read(len(b)) n = len(data) b[:n] = data @@ -676,7 +679,9 @@ class BufferedWriter(_BufferedIOMixin): # We can't accept anything else. # XXX Why not just let the exception pass through? raise BlockingIOError(e.errno, e.strerror, 0) + before = len(self._write_buf) self._write_buf.extend(b) + written = len(self._write_buf) - before if len(self._write_buf) > self.buffer_size: try: self.flush() @@ -687,7 +692,7 @@ class BufferedWriter(_BufferedIOMixin): overage = len(self._write_buf) - self.max_buffer_size self._write_buf = self._write_buf[:self.max_buffer_size] raise BlockingIOError(e.errno, e.strerror, overage) - return len(b) + return written def flush(self): written = 0 |