annotate svnexternals.py @ 224:2165461d2dd8

Exception clean-ups; use symbolic names & avoid Python 2.6 deprecations.
author Dan Villiom Podlaski Christiansen <danchr@gmail.com>
date Thu, 19 Mar 2009 21:27:39 +0100
parents 2412800b1258
children 79349fd04836
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1 import cStringIO
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2
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3 from mercurial import util as merc_util
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4
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5 class externalsfile(dict):
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6 """Map svn directories to lists of externals entries.
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7 """
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8 def __init__(self):
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9 super(externalsfile, self).__init__()
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10 self.encoding = 'utf-8'
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11
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12 def __setitem__(self, key, value):
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13 if value is None:
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14 value = []
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15 elif isinstance(value, basestring):
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16 value = value.splitlines()
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17 if key == '.':
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18 key = ''
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19 if not value:
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20 if key in self:
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21 del self[key]
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22 else:
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23 super(externalsfile, self).__setitem__(key, value)
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24
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25 def write(self):
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26 fp = cStringIO.StringIO()
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27 for target in merc_util.sort(self):
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28 lines = self[target]
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29 if not lines:
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30 continue
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31 if not target:
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32 target = '.'
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33 fp.write('[%s]\n' % target)
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34 for l in lines:
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35 l = ' ' + l + '\n'
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36 fp.write(l)
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37 return fp.getvalue()
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38
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39 def read(self, data):
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40 self.clear()
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41 fp = cStringIO.StringIO(data)
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42 dirs = {}
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43 target = None
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44 for line in fp.readlines():
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45 if not line.strip():
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46 continue
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47 if line.startswith('['):
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48 line = line.strip()
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49 if line[-1] != ']':
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50 raise merc_util.Abort('invalid externals section name: %s' % line)
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51 target = line[1:-1]
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52 if target == '.':
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53 target = ''
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54 elif line.startswith(' '):
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55 line = line.rstrip('\n')
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56 if target is None or not line:
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57 continue
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58 self.setdefault(target, []).append(line[1:])
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59
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60 def diff(ext1, ext2):
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61 """Compare 2 externalsfile and yield tuples like (dir, value1, value2)
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62 where value1 is the external value in ext1 for dir or None, and
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63 value2 the same in ext2.
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64 """
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65 for d in ext1:
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66 if d not in ext2:
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67 yield d, '\n'.join(ext1[d]), None
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68 elif ext1[d] != ext2[d]:
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69 yield d, '\n'.join(ext1[d]), '\n'.join(ext2[d])
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70 for d in ext2:
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71 if d not in ext1:
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72 yield d, None, '\n'.join(ext2[d])