Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/filelog.py @ 3861:db36a4f490f6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Indicate the purpose of the dummy changelog file in itself. Otherwise people getting an error message with an old installation might wonder why this file is corrupted.
author Thomas Arendsen Hein <thomas@intevation.de>
date Sun, 10 Dec 2006 23:03:53 +0100
parents 630caaf29815
children abaee83ce0a6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # filelog.py - file history class for mercurial
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2 #
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3 # Copyright 2005, 2006 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
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from revlog import *
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9 from demandload import *
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10 demandload(globals(), "os")
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11
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12 class filelog(revlog):
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13 def __init__(self, opener, path, defversion=REVLOG_DEFAULT_VERSION):
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14 revlog.__init__(self, opener,
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15 "/".join(("data", self.encodedir(path + ".i"))),
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16 "/".join(("data", self.encodedir(path + ".d"))),
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17 defversion)
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18
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19 # This avoids a collision between a file named foo and a dir named
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20 # foo.i or foo.d
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21 def encodedir(self, path):
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22 return (path
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23 .replace(".hg/", ".hg.hg/")
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24 .replace(".i/", ".i.hg/")
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25 .replace(".d/", ".d.hg/"))
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26
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27 def decodedir(self, path):
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28 return (path
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29 .replace(".d.hg/", ".d/")
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30 .replace(".i.hg/", ".i/")
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31 .replace(".hg.hg/", ".hg/"))
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32
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33 def read(self, node):
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34 t = self.revision(node)
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35 if not t.startswith('\1\n'):
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36 return t
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37 s = t.index('\1\n', 2)
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38 return t[s+2:]
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39
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40 def _readmeta(self, node):
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41 t = self.revision(node)
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42 if not t.startswith('\1\n'):
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43 return {}
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44 s = t.index('\1\n', 2)
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45 mt = t[2:s]
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46 m = {}
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47 for l in mt.splitlines():
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48 k, v = l.split(": ", 1)
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49 m[k] = v
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50 return m
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51
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52 def add(self, text, meta, transaction, link, p1=None, p2=None):
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53 if meta or text.startswith('\1\n'):
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54 mt = ""
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55 if meta:
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56 mt = [ "%s: %s\n" % (k, v) for k,v in meta.items() ]
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57 text = "\1\n%s\1\n%s" % ("".join(mt), text)
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58 return self.addrevision(text, transaction, link, p1, p2)
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59
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60 def renamed(self, node):
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61 if self.parents(node)[0] != nullid:
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62 return False
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63 m = self._readmeta(node)
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64 if m and m.has_key("copy"):
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65 return (m["copy"], bin(m["copyrev"]))
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66 return False
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67
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68 def size(self, rev):
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69 """return the size of a given revision"""
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70
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71 # for revisions with renames, we have to go the slow way
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72 node = self.node(rev)
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73 if self.renamed(node):
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74 return len(self.read(node))
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75
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76 return revlog.size(self, rev)
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77
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78 def cmp(self, node, text):
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79 """compare text with a given file revision"""
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80
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81 # for renames, we have to go the slow way
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82 if self.renamed(node):
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83 t2 = self.read(node)
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84 return t2 != text
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85
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86 return revlog.cmp(self, node, text)