Added release script

Makefile

@@ -1,6 +1,9 @@
 test:
 	python setup.py test
 
+release:
+	python scripts/make-release.py
+
 upload-docs:
 	$(MAKE) -C docs html dirhtml latex
 	$(MAKE) -C docs/_build/latex all-pdf

scripts/make-release.py

@@ -0,0 +1,151 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+    make-release
+    ~~~~~~~~~~~~
+
+    Helper script that performs a release.  Does pretty much everything
+    automatically for us.
+
+    :copyright: (c) 2011 by Armin Ronacher.
+    :license: BSD, see LICENSE for more details.
+"""
+import sys
+import os
+import re
+from datetime import datetime, date
+from subprocess import Popen, PIPE
+
+
+def parse_changelog():
+    with open('CHANGES') as f:
+        lineiter = iter(f)
+        for line in lineiter:
+            match = re.search('^Version\s+(.*)', line.strip())
+            if match is None:
+                continue
+            length = len(match.group(1))
+            version = match.group(1).strip()
+            if lineiter.next().count('-') != len(match.group(0)):
+                continue
+            while 1:
+                change_info = lineiter.next().strip()
+                if change_info:
+                    break
+
+            match = re.search(r'(?:codename (.*),\s*)?'
+                              r'released on (\w+\s+\d+\w+\s+\d+)(?i)',
+                              change_info)
+            if match is None:
+                continue
+
+            codename, datestr = match.groups()
+            return version, parse_date(datestr), codename
+
+
+def bump_version(version):
+    try:
+        parts = map(int, version.split('.'))
+    except ValueError:
+        fail('Current version is not numeric')
+    parts[-1] += 1
+    return '.'.join(map(str, parts))
+
+
+def parse_date(string):
+    string = string.replace('th ', ' ').replace('nd ', ' ') \
+                   .replace('rd ', ' ').replace('st ', ' ')
+    return datetime.strptime(string, '%B %d %Y')
+
+
+def set_filename_version(filename, version_number, pattern):
+    changed = []
+    def inject_version(match):
+        before, old, after = match.groups()
+        changed.append(True)
+        return before + version_number + after
+    with open(filename) as f:
+        contents = re.sub(r"^(\s*%s\s*=\s*')(.+?)(')(?sm)" % pattern,
+                          inject_version, f.read())
+
+    if not changed:
+        fail('Could not find %s in %s', pattern, filename)
+
+    with open(filename, 'w') as f:
+        f.write(contents)
+
+
+def set_init_version(version):
+    info('Setting __init__.py version to %s', version)
+    set_filename_version('jinja2/__init__.py', version, '__version__')
+
+
+def set_setup_version(version):
+    info('Setting setup.py version to %s', version)
+    set_filename_version('setup.py', version, 'version')
+
+
+def build_and_upload():
+    Popen([sys.executable, 'setup.py', 'release', 'sdist', 'upload']).wait()
+
+
+def fail(message, *args):
+    print >> sys.stderr, 'Error:', message % args
+    sys.exit(1)
+
+
+def info(message, *args):
+    print >> sys.stderr, message % args
+
+
+def get_git_tags():
+    return set(Popen(['git', 'tag'], stdout=PIPE).communicate()[0].splitlines())
+
+
+def git_is_clean():
+    return Popen(['git', 'diff', '--quiet']).wait() == 0
+
+
+def make_git_commit(message, *args):
+    message = message % args
+    Popen(['git', 'commit', '-am', message]).wait()
+
+
+def make_git_tag(tag):
+    info('Tagging "%s"', tag)
+    Popen(['git', 'tag', tag]).wait()
+
+
+def main():
+    os.chdir(os.path.join(os.path.dirname(__file__), '..'))
+
+    rv = parse_changelog()
+    if rv is None:
+        fail('Could not parse changelog')
+
+    version, release_date, codename = rv
+    dev_version = bump_version(version) + '-dev'
+
+    info('Releasing %s (codename %s, release date %s)',
+         version, codename, release_date.strftime('%d/%m/%Y'))
+    tags = get_git_tags()
+
+    if version in tags:
+        fail('Version "%s" is already tagged', version)
+    if release_date.date() != date.today():
+        fail('Release date is not today (%s != %s)')
+
+    if not git_is_clean():
+        fail('You have uncommitted changes in git')
+
+    set_init_version(version)
+    set_setup_version(version)
+    make_git_commit('Bump version number to %s', version)
+    make_git_tag(version)
+    build_and_upload()
+    set_init_version(dev_version)
+    set_setup_version(dev_version)
+
+
+if __name__ == '__main__':
+    main()