# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 1516391495 -3600
# Node ID fb0be099063f9b09344ec1c9af6f3e12297b0a01
# Parent  069df0b952e803b3efb3c59c423522a4800ecde4
util: move 'readexactly' in the util module

This function is used in multiple place, having it in util would be better.
(existing caller will be migrated in another series)

diff -r 069df0b952e8 -r fb0be099063f mercurial/changegroup.py
--- a/mercurial/changegroup.py	Fri Jan 19 19:13:11 2018 -0500
+++ b/mercurial/changegroup.py	Fri Jan 19 20:51:35 2018 +0100
@@ -32,14 +32,7 @@
 _CHANGEGROUPV2_DELTA_HEADER = "20s20s20s20s20s"
 _CHANGEGROUPV3_DELTA_HEADER = ">20s20s20s20s20sH"
 
-def readexactly(stream, n):
-    '''read n bytes from stream.read and abort if less was available'''
-    s = stream.read(n)
-    if len(s) < n:
-        raise error.Abort(_("stream ended unexpectedly"
-                           " (got %d bytes, expected %d)")
-                          % (len(s), n))
-    return s
+readexactly = util.readexactly
 
 def getchunk(stream):
     """return the next chunk from stream as a string"""
diff -r 069df0b952e8 -r fb0be099063f mercurial/util.py
--- a/mercurial/util.py	Fri Jan 19 19:13:11 2018 -0500
+++ b/mercurial/util.py	Fri Jan 19 20:51:35 2018 +0100
@@ -3865,3 +3865,12 @@
         fn = '%s~%s~%s' % (f, tag, n)
         if fn not in ctx and fn not in others:
             return fn
+
+def readexactly(stream, n):
+    '''read n bytes from stream.read and abort if less was available'''
+    s = stream.read(n)
+    if len(s) < n:
+        raise error.Abort(_("stream ended unexpectedly"
+                           " (got %d bytes, expected %d)")
+                          % (len(s), n))
+    return s