annotate mercurial/filelog.py @ 3420:52617d992eed

Report branch for hg log and friends
author Matt Mackall <mpm@selenic.com>
date Tue, 17 Oct 2006 18:30:18 -0500
parents 9a478efc16cc
children
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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 os.path.join("data", self.encodedir(path + ".i")),
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16 os.path.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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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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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)