Mercurial > hg
annotate mercurial/filelog.py @ 12583:903828be7397
mq: explain qpush -f better
author | Mads Kiilerich <mads@kiilerich.com> |
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date | Wed, 29 Sep 2010 01:32:50 +0200 |
parents | ab9fa7a85dd9 |
children | e5060aa22043 |
rev | line source |
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1089 | 1 # filelog.py - file history class for mercurial |
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2 # |
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 import revlog |
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9 |
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10 class filelog(revlog.revlog): |
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11 def __init__(self, opener, path): |
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12 revlog.revlog.__init__(self, opener, |
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13 "/".join(("data", path + ".i"))) |
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14 |
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15 def read(self, node): |
360 | 16 t = self.revision(node) |
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17 if not t.startswith('\1\n'): |
360 | 18 return t |
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19 s = t.index('\1\n', 2) |
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20 return t[s + 2:] |
360 | 21 |
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22 def _readmeta(self, node): |
360 | 23 t = self.revision(node) |
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24 if not t.startswith('\1\n'): |
1116 | 25 return {} |
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26 s = t.index('\1\n', 2) |
360 | 27 mt = t[2:s] |
1116 | 28 m = {} |
360 | 29 for l in mt.splitlines(): |
30 k, v = l.split(": ", 1) | |
31 m[k] = v | |
32 return m | |
33 | |
34 def add(self, text, meta, transaction, link, p1=None, p2=None): | |
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35 if meta or text.startswith('\1\n'): |
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36 mt = ["%s: %s\n" % (k, v) for k, v in sorted(meta.iteritems())] |
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37 text = "\1\n%s\1\n%s" % ("".join(mt), text) |
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38 return self.addrevision(text, transaction, link, p1, p2) |
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39 |
1116 | 40 def renamed(self, node): |
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41 if self.parents(node)[0] != revlog.nullid: |
1116 | 42 return False |
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43 m = self._readmeta(node) |
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44 if m and "copy" in m: |
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45 return (m["copy"], revlog.bin(m["copyrev"])) |
1116 | 46 return False |
47 | |
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48 def size(self, rev): |
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49 """return the size of a given revision""" |
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50 |
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51 # for revisions with renames, we have to go the slow way |
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52 node = self.node(rev) |
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53 if self.renamed(node): |
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54 return len(self.read(node)) |
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55 |
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56 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) |
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57 return revlog.revlog.size(self, rev) |
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58 |
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59 def cmp(self, node, text): |
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60 """compare text with a given file revision |
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61 |
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62 returns True if text is different than what is stored. |
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63 """ |
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64 |
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65 t = text |
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66 if text.startswith('\1\n'): |
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67 t = '\1\n\1\n' + text |
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68 |
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69 samehashes = not revlog.revlog.cmp(self, node, t) |
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70 if samehashes: |
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71 return False |
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72 |
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73 # renaming a file produces a different hash, even if the data |
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74 # remains unchanged. Check if it's the case (slow): |
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75 if self.renamed(node): |
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76 t2 = self.read(node) |
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77 return t2 != text |
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78 |
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79 return True |