[PATCH] Fix for issue 1670, archives downloaded from hgweb report version 'unknown'

[Jeremy Whitlock]

# HG changeset patch
# User Jeremy Whitlock <jcscoobyrs at gmail.com>
# Date 1242772904 21600
# Node ID 99567c804f8474d1730a5aee3e96131f2f341818
# Parent  90f86a5330bbbcd075c792cd14fb6bb47b8ccd2c
Fix for issue 1670, archives downloaded from hgweb report version 'unknown'.

Previously, setup.py was enhanced to identify the Mercurial version from either
.hg/ or mercurial/__version__.py.  When archives are created via hgweb, neither
of those options are available but, there is a file in the root of the archive
(.hg_archival.txt) that has the information.  This patch enhances setup.py to
identify the Mercurial version from the .hg_archival.txt file when there is no
.hg/ or mercurial/__version__.py available.

diff -r 90f86a5330bb -r 99567c804f84 setup.py
--- a/setup.py	Mon May 18 17:36:24 2009 -0500
+++ b/setup.py	Tue May 19 16:41:44 2009 -0600
@@ -97,6 +97,8 @@
 except ImportError:
     pass
 
+version = None
+
 if os.path.exists('.hg'):
     # execute hg out of this directory with a custom environment which
     # includes the pure Python modules in mercurial/pure
@@ -105,7 +107,6 @@
     os.environ['PYTHONPATH'] = os.pathsep.join(['mercurial', purepath, pypath])
     os.environ['HGRCPATH'] = '' # do not read any config file
     cmd = '%s hg id -it' % sys.executable
-    version = None
 
     try:
         l = os.popen(cmd).read().split()
@@ -120,12 +121,21 @@
         version = l[-1] # latest tag or revision number
         if version.endswith('+'):
             version += time.strftime('%Y%m%d')
+elif os.path.exists('.hg_archival.txt'):
+    archival_file = open('.hg_archival.txt', 'r')
 
-    if version:
-        f = file("mercurial/__version__.py", "w")
-        f.write('# this file is autogenerated by setup.py\n')
-        f.write('version = "%s"\n' % version)
-        f.close()
+    for line in archival_file.readlines():
+        if line.startswith('node:'):
+            version = line.split(':')[1].strip()[:12]
+            break
+
+    archival_file.close()
+
+if version:
+    f = file("mercurial/__version__.py", "w")
+    f.write('# this file is autogenerated by setup.py\n')
+    f.write('version = "%s"\n' % version)
+    f.close()
 
 try:
     from mercurial import __version__