Mercurial > hg
annotate hgext/largefiles/lfutil.py @ 21769:4a54d9f1b6b6
convert: define norepo in command decorator
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sun, 04 May 2014 22:02:25 -0700 |
parents | 66c6da0bc7e2 |
children | ac3b3a2d976d |
rev | line source |
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15168 | 1 # Copyright 2009-2010 Gregory P. Ward |
2 # Copyright 2009-2010 Intelerad Medical Systems Incorporated | |
3 # Copyright 2010-2011 Fog Creek Software | |
4 # Copyright 2010-2011 Unity Technologies | |
5 # | |
6 # This software may be used and distributed according to the terms of the | |
7 # GNU General Public License version 2 or any later version. | |
8 | |
9 '''largefiles utility code: must not import other modules in this package.''' | |
10 | |
11 import os | |
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12 import platform |
15168 | 13 import shutil |
14 import stat | |
15 | |
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16 from mercurial import dirstate, httpconnection, match as match_, util, scmutil |
15168 | 17 from mercurial.i18n import _ |
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18 from mercurial import node |
15168 | 19 |
20 shortname = '.hglf' | |
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21 shortnameslash = shortname + '/' |
15168 | 22 longname = 'largefiles' |
23 | |
24 | |
25 # -- Private worker functions ------------------------------------------ | |
26 | |
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27 def getminsize(ui, assumelfiles, opt, default=10): |
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28 lfsize = opt |
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29 if not lfsize and assumelfiles: |
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30 lfsize = ui.config(longname, 'minsize', default=default) |
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31 if lfsize: |
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32 try: |
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33 lfsize = float(lfsize) |
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34 except ValueError: |
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35 raise util.Abort(_('largefiles: size must be number (not %s)\n') |
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36 % lfsize) |
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37 if lfsize is None: |
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38 raise util.Abort(_('minimum size for largefiles must be specified')) |
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39 return lfsize |
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40 |
15168 | 41 def link(src, dest): |
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42 util.makedirs(os.path.dirname(dest)) |
15168 | 43 try: |
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44 util.oslink(src, dest) |
15168 | 45 except OSError: |
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46 # if hardlinks fail, fallback on atomic copy |
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47 dst = util.atomictempfile(dest) |
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48 for chunk in util.filechunkiter(open(src, 'rb')): |
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49 dst.write(chunk) |
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50 dst.close() |
15168 | 51 os.chmod(dest, os.stat(src).st_mode) |
52 | |
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53 def usercachepath(ui, hash): |
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54 path = ui.configpath(longname, 'usercache', None) |
15168 | 55 if path: |
56 path = os.path.join(path, hash) | |
57 else: | |
58 if os.name == 'nt': | |
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59 appdata = os.getenv('LOCALAPPDATA', os.getenv('APPDATA')) |
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60 if appdata: |
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61 path = os.path.join(appdata, longname, hash) |
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62 elif platform.system() == 'Darwin': |
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63 home = os.getenv('HOME') |
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64 if home: |
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65 path = os.path.join(home, 'Library', 'Caches', |
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66 longname, hash) |
15168 | 67 elif os.name == 'posix': |
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68 path = os.getenv('XDG_CACHE_HOME') |
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69 if path: |
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70 path = os.path.join(path, longname, hash) |
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71 else: |
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72 home = os.getenv('HOME') |
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73 if home: |
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74 path = os.path.join(home, '.cache', longname, hash) |
15168 | 75 else: |
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76 raise util.Abort(_('unknown operating system: %s\n') % os.name) |
15168 | 77 return path |
78 | |
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79 def inusercache(ui, hash): |
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80 path = usercachepath(ui, hash) |
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81 return path and os.path.exists(path) |
15168 | 82 |
83 def findfile(repo, hash): | |
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84 if instore(repo, hash): |
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85 repo.ui.note(_('found %s in store\n') % hash) |
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86 return storepath(repo, hash) |
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87 elif inusercache(repo.ui, hash): |
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88 repo.ui.note(_('found %s in system cache\n') % hash) |
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89 path = storepath(repo, hash) |
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90 link(usercachepath(repo.ui, hash), path) |
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91 return path |
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92 return None |
15168 | 93 |
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94 class largefilesdirstate(dirstate.dirstate): |
15168 | 95 def __getitem__(self, key): |
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96 return super(largefilesdirstate, self).__getitem__(unixpath(key)) |
15168 | 97 def normal(self, f): |
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98 return super(largefilesdirstate, self).normal(unixpath(f)) |
15168 | 99 def remove(self, f): |
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100 return super(largefilesdirstate, self).remove(unixpath(f)) |
15168 | 101 def add(self, f): |
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102 return super(largefilesdirstate, self).add(unixpath(f)) |
15168 | 103 def drop(self, f): |
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104 return super(largefilesdirstate, self).drop(unixpath(f)) |
15168 | 105 def forget(self, f): |
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106 return super(largefilesdirstate, self).forget(unixpath(f)) |
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107 def normallookup(self, f): |
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108 return super(largefilesdirstate, self).normallookup(unixpath(f)) |
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109 def _ignore(self, f): |
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110 return False |
15168 | 111 |
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112 def openlfdirstate(ui, repo, create=True): |
15168 | 113 ''' |
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114 Return a dirstate object that tracks largefiles: i.e. its root is |
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115 the repo root, but it is saved in .hg/largefiles/dirstate. |
15168 | 116 ''' |
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117 lfstoredir = repo.join(longname) |
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118 opener = scmutil.opener(lfstoredir) |
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119 lfdirstate = largefilesdirstate(opener, ui, repo.root, |
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120 repo.dirstate._validate) |
15168 | 121 |
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122 # If the largefiles dirstate does not exist, populate and create |
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123 # it. This ensures that we create it on the first meaningful |
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124 # largefiles operation in a new clone. |
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125 if create and not os.path.exists(os.path.join(lfstoredir, 'dirstate')): |
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126 util.makedirs(lfstoredir) |
15168 | 127 matcher = getstandinmatcher(repo) |
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128 for standin in repo.dirstate.walk(matcher, [], False, False): |
15168 | 129 lfile = splitstandin(standin) |
130 lfdirstate.normallookup(lfile) | |
131 return lfdirstate | |
132 | |
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133 def lfdirstatestatus(lfdirstate, repo, rev): |
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134 match = match_.always(repo.root, repo.getcwd()) |
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135 s = lfdirstate.status(match, [], False, False, False) |
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136 unsure, modified, added, removed, missing, unknown, ignored, clean = s |
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137 for lfile in unsure: |
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138 try: |
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139 fctx = repo[rev][standin(lfile)] |
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140 except LookupError: |
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141 fctx = None |
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142 if not fctx or fctx.data().strip() != hashfile(repo.wjoin(lfile)): |
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143 modified.append(lfile) |
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144 else: |
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145 clean.append(lfile) |
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146 lfdirstate.normal(lfile) |
15168 | 147 return (modified, added, removed, missing, unknown, ignored, clean) |
148 | |
149 def listlfiles(repo, rev=None, matcher=None): | |
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150 '''return a list of largefiles in the working copy or the |
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151 specified changeset''' |
15168 | 152 |
153 if matcher is None: | |
154 matcher = getstandinmatcher(repo) | |
155 | |
156 # ignore unknown files in working directory | |
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157 return [splitstandin(f) |
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158 for f in repo[rev].walk(matcher) |
15168 | 159 if rev is not None or repo.dirstate[f] != '?'] |
160 | |
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161 def instore(repo, hash): |
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162 return os.path.exists(storepath(repo, hash)) |
15168 | 163 |
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164 def storepath(repo, hash): |
15168 | 165 return repo.join(os.path.join(longname, hash)) |
166 | |
167 def copyfromcache(repo, hash, filename): | |
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168 '''Copy the specified largefile from the repo or system cache to |
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169 filename in the repository. Return true on success or false if the |
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170 file was not found in either cache (which should not happened: |
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171 this is meant to be called only after ensuring that the needed |
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172 largefile exists in the cache).''' |
15168 | 173 path = findfile(repo, hash) |
174 if path is None: | |
175 return False | |
176 util.makedirs(os.path.dirname(repo.wjoin(filename))) | |
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177 # The write may fail before the file is fully written, but we |
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178 # don't use atomic writes in the working copy. |
15168 | 179 shutil.copy(path, repo.wjoin(filename)) |
180 return True | |
181 | |
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182 def copytostore(repo, rev, file, uploaded=False): |
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183 hash = readstandin(repo, file, rev) |
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184 if instore(repo, hash): |
15168 | 185 return |
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186 copytostoreabsolute(repo, repo.wjoin(file), hash) |
15168 | 187 |
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188 def copyalltostore(repo, node): |
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189 '''Copy all largefiles in a given revision to the store''' |
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190 |
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191 ctx = repo[node] |
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192 for filename in ctx.files(): |
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193 if isstandin(filename) and filename in ctx.manifest(): |
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194 realfile = splitstandin(filename) |
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195 copytostore(repo, ctx.node(), realfile) |
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196 |
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197 |
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198 def copytostoreabsolute(repo, file, hash): |
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199 if inusercache(repo.ui, hash): |
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200 link(usercachepath(repo.ui, hash), storepath(repo, hash)) |
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201 elif not getattr(repo, "_isconverting", False): |
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202 util.makedirs(os.path.dirname(storepath(repo, hash))) |
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203 dst = util.atomictempfile(storepath(repo, hash), |
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204 createmode=repo.store.createmode) |
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205 for chunk in util.filechunkiter(open(file, 'rb')): |
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206 dst.write(chunk) |
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207 dst.close() |
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208 linktousercache(repo, hash) |
15168 | 209 |
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210 def linktousercache(repo, hash): |
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211 path = usercachepath(repo.ui, hash) |
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212 if path: |
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213 link(storepath(repo, hash), path) |
15168 | 214 |
215 def getstandinmatcher(repo, pats=[], opts={}): | |
216 '''Return a match object that applies pats to the standin directory''' | |
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217 standindir = repo.wjoin(shortname) |
15168 | 218 if pats: |
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219 pats = [os.path.join(standindir, pat) for pat in pats] |
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220 else: |
15168 | 221 # no patterns: relative to repo root |
222 pats = [standindir] | |
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223 # no warnings about missing files or directories |
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224 match = scmutil.match(repo[None], pats, opts) |
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225 match.bad = lambda f, msg: None |
15168 | 226 return match |
227 | |
228 def composestandinmatcher(repo, rmatcher): | |
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229 '''Return a matcher that accepts standins corresponding to the |
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230 files accepted by rmatcher. Pass the list of files in the matcher |
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231 as the paths specified by the user.''' |
15168 | 232 smatcher = getstandinmatcher(repo, rmatcher.files()) |
233 isstandin = smatcher.matchfn | |
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234 def composedmatchfn(f): |
15168 | 235 return isstandin(f) and rmatcher.matchfn(splitstandin(f)) |
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236 smatcher.matchfn = composedmatchfn |
15168 | 237 |
238 return smatcher | |
239 | |
240 def standin(filename): | |
241 '''Return the repo-relative path to the standin for the specified big | |
242 file.''' | |
243 # Notes: | |
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244 # 1) Some callers want an absolute path, but for instance addlargefiles |
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245 # needs it repo-relative so it can be passed to repo[None].add(). So |
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246 # leave it up to the caller to use repo.wjoin() to get an absolute path. |
15168 | 247 # 2) Join with '/' because that's what dirstate always uses, even on |
248 # Windows. Change existing separator to '/' first in case we are | |
249 # passed filenames from an external source (like the command line). | |
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250 return shortnameslash + util.pconvert(filename) |
15168 | 251 |
252 def isstandin(filename): | |
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253 '''Return true if filename is a big file standin. filename must be |
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254 in Mercurial's internal form (slash-separated).''' |
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255 return filename.startswith(shortnameslash) |
15168 | 256 |
257 def splitstandin(filename): | |
258 # Split on / because that's what dirstate always uses, even on Windows. | |
259 # Change local separator to / first just in case we are passed filenames | |
260 # from an external source (like the command line). | |
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261 bits = util.pconvert(filename).split('/', 1) |
15168 | 262 if len(bits) == 2 and bits[0] == shortname: |
263 return bits[1] | |
264 else: | |
265 return None | |
266 | |
267 def updatestandin(repo, standin): | |
268 file = repo.wjoin(splitstandin(standin)) | |
269 if os.path.exists(file): | |
270 hash = hashfile(file) | |
271 executable = getexecutable(file) | |
272 writestandin(repo, standin, hash, executable) | |
273 | |
274 def readstandin(repo, filename, node=None): | |
275 '''read hex hash from standin for filename at given node, or working | |
276 directory if no node is given''' | |
277 return repo[node][standin(filename)].data().strip() | |
278 | |
279 def writestandin(repo, standin, hash, executable): | |
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280 '''write hash to <repo.root>/<standin>''' |
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281 repo.wwrite(standin, hash + '\n', executable and 'x' or '') |
15168 | 282 |
283 def copyandhash(instream, outfile): | |
284 '''Read bytes from instream (iterable) and write them to outfile, | |
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285 computing the SHA-1 hash of the data along the way. Return the hash.''' |
15168 | 286 hasher = util.sha1('') |
287 for data in instream: | |
288 hasher.update(data) | |
289 outfile.write(data) | |
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290 return hasher.hexdigest() |
15168 | 291 |
292 def hashrepofile(repo, file): | |
293 return hashfile(repo.wjoin(file)) | |
294 | |
295 def hashfile(file): | |
296 if not os.path.exists(file): | |
297 return '' | |
298 hasher = util.sha1('') | |
299 fd = open(file, 'rb') | |
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300 for data in util.filechunkiter(fd, 128 * 1024): |
15168 | 301 hasher.update(data) |
302 fd.close() | |
303 return hasher.hexdigest() | |
304 | |
305 def getexecutable(filename): | |
306 mode = os.stat(filename).st_mode | |
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307 return ((mode & stat.S_IXUSR) and |
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308 (mode & stat.S_IXGRP) and |
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309 (mode & stat.S_IXOTH)) |
15168 | 310 |
311 def urljoin(first, second, *arg): | |
312 def join(left, right): | |
313 if not left.endswith('/'): | |
314 left += '/' | |
315 if right.startswith('/'): | |
316 right = right[1:] | |
317 return left + right | |
318 | |
319 url = join(first, second) | |
320 for a in arg: | |
321 url = join(url, a) | |
322 return url | |
323 | |
324 def hexsha1(data): | |
325 """hexsha1 returns the hex-encoded sha1 sum of the data in the file-like | |
326 object data""" | |
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327 h = util.sha1() |
15168 | 328 for chunk in util.filechunkiter(data): |
329 h.update(chunk) | |
330 return h.hexdigest() | |
331 | |
332 def httpsendfile(ui, filename): | |
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333 return httpconnection.httpsendfile(ui, filename, 'rb') |
15168 | 334 |
335 def unixpath(path): | |
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336 '''Return a version of path normalized for use with the lfdirstate.''' |
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337 return util.pconvert(os.path.normpath(path)) |
15168 | 338 |
339 def islfilesrepo(repo): | |
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340 if ('largefiles' in repo.requirements and |
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341 util.any(shortnameslash in f[0] for f in repo.store.datafiles())): |
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342 return True |
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343 |
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344 return util.any(openlfdirstate(repo.ui, repo, False)) |
15168 | 345 |
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346 class storeprotonotcapable(Exception): |
15168 | 347 def __init__(self, storetypes): |
348 self.storetypes = storetypes | |
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349 |
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350 def getstandinsstate(repo): |
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351 standins = [] |
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352 matcher = getstandinmatcher(repo) |
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353 for standin in repo.dirstate.walk(matcher, [], False, False): |
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354 lfile = splitstandin(standin) |
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355 try: |
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356 hash = readstandin(repo, lfile) |
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357 except IOError: |
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358 hash = None |
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359 standins.append((lfile, hash)) |
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360 return standins |
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361 |
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362 def getlfilestoupdate(oldstandins, newstandins): |
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363 changedstandins = set(oldstandins).symmetric_difference(set(newstandins)) |
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364 filelist = [] |
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365 for f in changedstandins: |
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366 if f[0] not in filelist: |
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367 filelist.append(f[0]) |
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368 return filelist |
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369 |
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370 def getlfilestoupload(repo, missing, addfunc): |
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371 for n in missing: |
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372 parents = [p for p in repo.changelog.parents(n) if p != node.nullid] |
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373 ctx = repo[n] |
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374 files = set(ctx.files()) |
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375 if len(parents) == 2: |
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376 mc = ctx.manifest() |
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377 mp1 = ctx.parents()[0].manifest() |
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378 mp2 = ctx.parents()[1].manifest() |
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379 for f in mp1: |
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380 if f not in mc: |
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381 files.add(f) |
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382 for f in mp2: |
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383 if f not in mc: |
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384 files.add(f) |
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385 for f in mc: |
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386 if mc[f] != mp1.get(f, None) or mc[f] != mp2.get(f, None): |
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387 files.add(f) |
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388 for fn in files: |
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389 if isstandin(fn) and fn in ctx: |
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390 addfunc(fn, ctx[fn].data().strip()) |