git_remote_helpers/hg/hg.py

   1 import urllib
   2 import re
   3
   4 class GitHg(object):
   5     """Class that handles various aspects of converting a hg commit to git.
   6     """
   7
   8     def __init__(self, warn):
   9         """Initializes a new GitHg object with the specified warner.
  10         """
  11
  12         self.warn = warn
  13
  14     def format_timezone(self, offset):
  15         if offset % 60 != 0:
  16             raise ValueError("Unable to handle non-minute offset.")
  17         sign = (offset < 0) and '-' or '+'
  18         offset = abs(offset)
  19         return '%c%02d%02d' % (sign, offset / 3600, (offset / 60) % 60)
  20
  21     def get_committer(self, ctx):
  22         extra = ctx.extra()
  23
  24         if 'committer' in extra:
  25             # fixup timezone
  26             (name_timestamp, timezone) = extra['committer'].rsplit(' ', 1)
  27             try:
  28                 timezone = self.format_timezone(-int(timezone))
  29                 return '%s %s' % (name_timestamp, timezone)
  30             except ValueError:
  31                 self.warn("Ignoring committer in extra, invalid timezone in r%s: '%s'.\n" % (ctx.rev(), timezone))
  32
  33         return None
  34
  35     def get_message(self, ctx):
  36         extra = ctx.extra()
  37
  38         message = ctx.description() + "\n"
  39         if 'message' in extra:
  40             message = apply_delta(message, extra['message'])
  41
  42         # HG EXTRA INFORMATION
  43         add_extras = False
  44         extra_message = ''
  45         if not ctx.branch() == 'default':
  46             add_extras = True
  47             extra_message += "branch : " + ctx.branch() + "\n"
  48
  49         renames = []
  50         for f in ctx.files():
  51             if f not in ctx.manifest():
  52                 continue
  53             rename = ctx.filectx(f).renamed()
  54             if rename:
  55                 renames.append((rename[0], f))
  56
  57         if renames:
  58             add_extras = True
  59             for oldfile, newfile in renames:
  60                 extra_message += "rename : " + oldfile + " => " + newfile + "\n"
  61
  62         for key, value in extra.iteritems():
  63             if key in ('author', 'committer', 'encoding', 'message', 'branch', 'hg-git'):
  64                 continue
  65             else:
  66                 add_extras = True
  67                 extra_message += "extra : " + key + " : " +  urllib.quote(value) + "\n"
  68
  69         if add_extras:
  70             message += "\n--HG--\n" + extra_message
  71
  72         return message
  73
  74     def get_author(self, ctx):
  75         # hg authors might not have emails
  76         author = ctx.user()
  77
  78         # check for git author pattern compliance
  79         regex = re.compile('^(.*?) ?\<(.*?)(|\>(.*))$')
  80         a = regex.match(author)
  81
  82         if a:
  83             name = a.group(1)
  84             email = a.group(2)
  85             extra = a.group(4)
  86             if not extra is None and len(extra) > 0:
  87                 name += ' ext:(' + urllib.quote(extra) + ')'
  88             author = name + ' <' + email + '>'
  89         else:
  90             if author.find('<') >= 0:
  91                 author = author + '>'
  92             else:
  93                 author = author + ' <none@none>'
  94
  95         if 'author' in ctx.extra():
  96             author = apply_delta(author, ctx.extra()['author'])
  97
  98         (time, timezone) = ctx.date()
  99         date = str(int(time)) + ' ' + self.format_timezone(-timezone)
 100
 101         return author + ' ' + date
 102
 103     def get_parents(self, ctx):
 104         def is_octopus_part(ctx):
 105             return ctx.extra().get('hg-git', None) in ('octopus', 'octopus-done')
 106
 107         parents = []
 108         if ctx.extra().get('hg-git', None) == 'octopus-done':
 109             # implode octopus parents
 110             part = ctx
 111             while is_octopus_part(part):
 112                 (p1, p2) = part.parents()
 113                 assert not is_octopus_part(p1)
 114                 parents.append(p1)
 115                 part = p2
 116             parents.append(p2)
 117         else:
 118             parents = ctx.parents()
 119
 120         return parents