Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/statichttprepo.py @ 5452:82b4ff3abbcd

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bdiff: tweaks for large files - adjust the common line threshold to .1% this speeds up a delta of 7M lines of source from 10m to 40s - adjust the scaling of the hash array down a bit as it was raising the peak memory usage significantly
author Matt Mackall <mpm@selenic.com>
date Thu, 11 Oct 2007 00:46:56 -0500
parents 639935f2e63a
children
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1 # statichttprepo.py - simple http repository class for mercurial
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2 #
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3 # This provides read-only repo access to repositories exported via static http
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4 #
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5 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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6 #
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7 # This software may be used and distributed according to the terms
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8 # of the GNU General Public License, incorporated herein by reference.
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9
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10 from i18n import _
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11 import changelog, filelog, httprangereader
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12 import repo, localrepo, manifest, os, urllib, urllib2, util
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13
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14 class rangereader(httprangereader.httprangereader):
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15 def read(self, size=None):
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16 try:
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17 return httprangereader.httprangereader.read(self, size)
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18 except urllib2.HTTPError, inst:
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19 raise IOError(None, inst)
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20 except urllib2.URLError, inst:
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21 raise IOError(None, inst.reason[1])
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22
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23 def opener(base):
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24 """return a function that opens files over http"""
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25 p = base
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26 def o(path, mode="r"):
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27 f = "/".join((p, urllib.quote(path)))
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28 return rangereader(f)
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29 return o
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30
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31 class statichttprepository(localrepo.localrepository):
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32 def __init__(self, ui, path):
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33 self._url = path
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34 self.ui = ui
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35
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36 self.path = path.rstrip('/') + "/.hg"
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37 self.opener = opener(self.path)
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38 # find requirements
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39 try:
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40 requirements = self.opener("requires").read().splitlines()
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41 except IOError:
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42 requirements = []
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43 # check them
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44 for r in requirements:
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45 if r not in self.supported:
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46 raise repo.RepoError(_("requirement '%s' not supported") % r)
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47
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48 # setup store
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49 if "store" in requirements:
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50 self.encodefn = util.encodefilename
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51 self.decodefn = util.decodefilename
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52 self.spath = self.path + "/store"
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53 else:
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54 self.encodefn = lambda x: x
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55 self.decodefn = lambda x: x
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56 self.spath = self.path
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57 self.sopener = util.encodedopener(opener(self.spath), self.encodefn)
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58
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59 self.manifest = manifest.manifest(self.sopener)
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60 self.changelog = changelog.changelog(self.sopener)
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61 self.tagscache = None
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62 self.nodetagscache = None
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63 self.encodepats = None
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64 self.decodepats = None
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65
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66 def url(self):
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67 return 'static-' + self._url
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68
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69 def dev(self):
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70 return -1
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71
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72 def local(self):
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73 return False
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75 def instance(ui, path, create):
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76 if create:
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77 raise util.Abort(_('cannot create new static-http repository'))
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78 return statichttprepository(ui, path[7:])