[Python-checkins] cpython: On behalf of Nadeem Vawda: issue #10376: micro-optimize reading from a Zipfile.
antoine.pitrou
python-checkins at python.org
Sat Jun 23 16:48:23 CEST 2012
http://hg.python.org/cpython/rev/0e8285321659
changeset: 77631:0e8285321659
user: Antoine Pitrou <solipsis at pitrou.net>
date: Sat Jun 23 16:44:48 2012 +0200
summary:
On behalf of Nadeem Vawda: issue #10376: micro-optimize reading from a Zipfile.
(patch by Serhiy)
files:
Lib/zipfile.py | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -733,12 +733,13 @@
buf += self._read1(self.MAX_N)
return buf
- n -= len(self._readbuffer) - self._offset
- if n < 0:
- buf = self._readbuffer[self._offset:n]
- self._offset += len(buf)
+ end = n + self._offset
+ if end < len(self._readbuffer):
+ buf = self._readbuffer[self._offset:end]
+ self._offset = end
return buf
+ n = end - len(self._readbuffer)
buf = self._readbuffer[self._offset:]
self._readbuffer = b''
self._offset = 0
@@ -774,12 +775,13 @@
buf += data
return buf
- n -= len(self._readbuffer) - self._offset
- if n < 0:
- buf = self._readbuffer[self._offset:n]
- self._offset += len(buf)
+ end = n + self._offset
+ if end < len(self._readbuffer):
+ buf = self._readbuffer[self._offset:end]
+ self._offset = end
return buf
+ n = end - len(self._readbuffer)
buf = self._readbuffer[self._offset:]
self._readbuffer = b''
self._offset = 0
--
Repository URL: http://hg.python.org/cpython
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