From 453d47aec1a82cef50b71befaceae17a3df6e5d3 Mon Sep 17 00:00:00 2001
Message-Id: <453d47aec1a82cef50b71befaceae17a3df6e5d3.1715226424.git.mdw@distorted.org.uk>
From: Mark Wooding <mdw@chiark.greenend.org.uk>
Date: Fri, 7 Dec 2007 21:16:36 +0000
Subject: [PATCH] Check the minimum required versions of GIT and Python (bug
 #10218)
Organization: Straylight/Edgeware

From: Catalin Marinas <catalin.marinas@gmail.com>

The patch modifies the setup.py script to check the minimum versions
of GIT and Python required for building and installing StGIT. They are
currently set to git-1.5.2 and Python-2.4.

Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>
---
 setup.py         | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 stgit/version.py |  4 ++++
 2 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/setup.py b/setup.py
index cf5b1da..7b0ded5 100755
--- a/setup.py
+++ b/setup.py
@@ -1,9 +1,52 @@
 #!/usr/bin/env python
 
-import glob
+import sys, glob
 from distutils.core import setup
 
-from stgit.version import version
+from stgit.version import version, git_min_ver, python_min_ver
+from stgit.run import Run
+
+def __version_to_list(version):
+    """Convert a version string to a list of numbers or strings
+    """
+    ver_list = []
+    for p in version.split('.'):
+        try:
+            n = int(p)
+        except ValueError:
+            n = p
+        ver_list.append(n)
+    return ver_list
+
+def __check_min_version(min_ver, ver):
+    """Check whether ver is greater or equal to min_ver
+    """
+    min_ver_list = __version_to_list(min_ver)
+    ver_list = __version_to_list(ver)
+    return min_ver_list <= ver_list
+
+def __check_python_version():
+    """Check the minimum Python version
+    """
+    pyver = '.'.join(str(n) for n in sys.version_info)
+    if not __check_min_version(python_min_ver, pyver):
+        print >> sys.stderr, 'Python version %s or newer required. Found %s' \
+              % (python_min_ver, pyver)
+        sys.exit(1)
+
+def __check_git_version():
+    """Check the minimum GIT version
+    """
+    gitver = Run('git', '--version').output_one_line().split()[2]
+    if not __check_min_version(git_min_ver, gitver):
+        print >> sys.stderr, 'GIT version %s or newer required. Found %s' \
+              % (git_min_ver, gitver)
+        sys.exit(1)
+
+# Check the minimum versions required
+if sys.argv[1] in ['install', 'build']:
+    __check_python_version()
+    __check_git_version()
 
 setup(name = 'stgit',
       version = version,
diff --git a/stgit/version.py b/stgit/version.py
index e8dfdaf..edd79e0 100644
--- a/stgit/version.py
+++ b/stgit/version.py
@@ -1 +1,5 @@
 version = '0.13'
+
+# minimum version requirements
+git_min_ver = '1.5.2'
+python_min_ver = '2.5'
-- 
[mdw]