Mercurial > hg
annotate mercurial/filelog.py @ 1740:f95654385065
add --daemon option to serve command. for issue 45.
code looks odd because it is portable to windows. windows does not have
os.fork, so have to spawn and use pipe to tell parent ready instead.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Fri, 17 Feb 2006 16:29:30 -0800 |
parents | dca956c9767d |
children | c21b54f7f7b8 74d3f5336b66 |
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 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 |
1089 | 8 import os |
262 | 9 from revlog import * |
10 from demandload import * | |
1089 | 11 demandload(globals(), "bdiff") |
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12 |
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13 class filelog(revlog): |
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14 def __init__(self, opener, path): |
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15 revlog.__init__(self, opener, |
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16 os.path.join("data", self.encodedir(path + ".i")), |
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17 os.path.join("data", self.encodedir(path + ".d"))) |
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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): |
360 | 34 t = self.revision(node) |
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35 if not t.startswith('\1\n'): |
360 | 36 return t |
37 s = t.find('\1\n', 2) | |
38 return t[s+2:] | |
39 | |
40 def readmeta(self, node): | |
41 t = self.revision(node) | |
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42 if not t.startswith('\1\n'): |
1116 | 43 return {} |
360 | 44 s = t.find('\1\n', 2) |
45 mt = t[2:s] | |
1116 | 46 m = {} |
360 | 47 for l in mt.splitlines(): |
48 k, v = l.split(": ", 1) | |
49 m[k] = v | |
50 return m | |
51 | |
52 def add(self, text, meta, transaction, link, p1=None, p2=None): | |
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53 if meta or text.startswith('\1\n'): |
360 | 54 mt = "" |
55 if meta: | |
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 |
1116 | 60 def renamed(self, node): |
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61 if self.parents(node)[0] != nullid: |
1116 | 62 return False |
63 m = self.readmeta(node) | |
64 if m and m.has_key("copy"): | |
65 return (m["copy"], bin(m["copyrev"])) | |
66 return False | |
67 | |
79 | 68 def annotate(self, node): |
199 | 69 |
70 def decorate(text, rev): | |
436 | 71 return ([rev] * len(text.splitlines()), text) |
199 | 72 |
73 def pair(parent, child): | |
436 | 74 for a1, a2, b1, b2 in bdiff.blocks(parent[1], child[1]): |
471 | 75 child[0][b1:b2] = parent[0][a1:a2] |
76 return child | |
199 | 77 |
200 | 78 # find all ancestors |
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79 needed = {node:1} |
199 | 80 visit = [node] |
81 while visit: | |
82 n = visit.pop(0) | |
83 for p in self.parents(n): | |
84 if p not in needed: | |
85 needed[p] = 1 | |
86 visit.append(p) | |
200 | 87 else: |
88 # count how many times we'll use this | |
89 needed[p] += 1 | |
199 | 90 |
200 | 91 # sort by revision which is a topological order |
471 | 92 visit = [ (self.rev(n), n) for n in needed.keys() ] |
199 | 93 visit.sort() |
94 hist = {} | |
95 | |
471 | 96 for r,n in visit: |
199 | 97 curr = decorate(self.read(n), self.linkrev(n)) |
98 for p in self.parents(n): | |
99 if p != nullid: | |
100 curr = pair(hist[p], curr) | |
200 | 101 # trim the history of unneeded revs |
102 needed[p] -= 1 | |
103 if not needed[p]: | |
104 del hist[p] | |
199 | 105 hist[n] = curr |
106 | |
436 | 107 return zip(hist[n][0], hist[n][1].splitlines(1)) |