Change User-agent field in client to have a lot more info.

Change User-agent field in client to have a lot more info.

--- a/mercurial/httprepo.py	Sat Mar 15 12:42:34 2008 -0700
+++ b/mercurial/httprepo.py	Sat Mar 15 12:42:41 2008 -0700
@@ -10,7 +10,7 @@
 from remoterepo import remoterepository
 from i18n import _
 import repo, os, urllib, urllib2, urlparse, zlib, util, httplib
-import errno, keepalive, socket, changegroup
+import errno, keepalive, socket, changegroup, version
 
 class passwordmgr(urllib2.HTTPPasswordMgrWithDefaultRealm):
     def __init__(self, ui):
@@ -268,7 +268,7 @@
         opener = urllib2.build_opener(*handlers)
 
         # 1.0 here is the _protocol_ version
-        opener.addheaders = [('User-agent', 'mercurial/proto-1.0')]
+        opener.addheaders = [('User-agent', version.get_useragent())]
         urllib2.install_opener(opener)
 
     def url(self):

--- a/mercurial/version.py	Sat Mar 15 12:42:34 2008 -0700
+++ b/mercurial/version.py	Sat Mar 15 12:42:41 2008 -0700
@@ -10,6 +10,8 @@
 """
 
 import os
+import os.path
+import sys
 import re
 import time
 
@@ -27,6 +29,16 @@
         version = unknown_version
     return version
 
+def get_useragent():
+    """Return some extended version information for the User-Agent
+    field in http requests."""
+    hgver = get_version()
+    pyver = '%s(%s)' % (sys.version.split()[0], hex(sys.hexversion))
+    ostype = os.name
+    plat = sys.platform
+    return 'mercurial/proto-1.0 (Python/%s; Mercurial/%s; %s/%s)' % \
+           (pyver, hgver, ostype, plat)
+
 def write_version(version):
     """Overwrite version file."""
     if version == get_version():