mdw@git.distorted.org.uk Git - stgit/blob - stgit/version.py

   1 from stgit.exception import StgException
   2 from stgit import run, utils
   3 import os, os.path, re, sys
   4
   5 class VersionUnavailable(StgException):
   6     pass
   7
   8 def git_describe_version():
   9     path = sys.path[0]
  10     try:
  11         v = run.Run('git', 'describe', '--tags', '--abbrev=4'
  12                     ).cwd(path).output_one_line()
  13     except run.RunException, e:
  14         raise VersionUnavailable(str(e))
  15     if not re.match(r'^v[0-9]', v):
  16         raise VersionUnavailable('%s: bad version' % v)
  17     try:
  18         dirty = run.Run('git', 'diff-index', '--name-only', 'HEAD'
  19                         ).cwd(path).raw_output()
  20     except run.RunException, e:
  21         raise VersionUnavailable(str(e))
  22     if dirty:
  23         v += '-dirty'
  24     return utils.strip_prefix('v', v)
  25
  26 def builtin_version():
  27     try:
  28         import builtin_version as bv
  29     except ImportError:
  30         raise VersionUnavailable()
  31     else:
  32         return bv.version
  33
  34 def _builtin_version_file(ext = 'py'):
  35     return os.path.join(sys.path[0], 'stgit', 'builtin_version.%s' % ext)
  36
  37 def write_builtin_version():
  38     try:
  39         v = git_describe_version()
  40     except VersionUnavailable:
  41         return
  42     f = file(_builtin_version_file(), 'w')
  43     f.write('# This file was generated automatically. Do not edit by hand.\n'
  44             'version = %r\n' % v)
  45
  46 def delete_builtin_version():
  47     for ext in ['py', 'pyc', 'pyo']:
  48         fn = _builtin_version_file(ext)
  49         if os.path.exists(fn):
  50             os.remove(fn)
  51
  52 def get_version():
  53     for v in [builtin_version, git_describe_version]:
  54         try:
  55             return v()
  56         except VersionUnavailable:
  57             pass
  58     return 'unknown-version'
  59
  60 version = get_version()
  61
  62 # minimum version requirements
  63 git_min_ver = '1.5.2'
  64 python_min_ver = '2.4'