# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1602690716 -7200
# Node ID d4c4391aa7f26c8a5c329330f14ab339a34b9130
# Parent  d1072cba8aff6a5d7399d156fe76da87fff56d2c
pycompat: add an entry for unnamedtmpfile

I am going to use unnamed temporary files to pass arbitrarily large input data
to worker creating bundles. To do so, I need a unified API that work on py2 and
py3.

Differential Revision: https://phab.mercurial-scm.org/D9211

diff -r d1072cba8aff -r d4c4391aa7f2 mercurial/pycompat.py
--- a/mercurial/pycompat.py	Wed Oct 14 21:47:14 2020 +0200
+++ b/mercurial/pycompat.py	Wed Oct 14 17:51:56 2020 +0200
@@ -506,6 +506,17 @@
     return tempfile.mkstemp(suffix, prefix, dir)
 
 
+# TemporaryFile does not support an "encoding=" argument on python2.
+# This wrapper file are always open in byte mode.
+def unnamedtempfile(mode=None, *args, **kwargs):
+    if mode is None:
+        mode = b'w+b'
+    else:
+        mode = sysstr(mode)
+    assert 'b' in mode
+    return tempfile.TemporaryFile(mode, *args, **kwargs)
+
+
 # NamedTemporaryFile does not support an "encoding=" argument on python2.
 # This wrapper file are always open in byte mode.
 def namedtempfile(