Mercurial > hg
annotate hgext/largefiles/lfutil.py @ 21042:32b3331f18eb
largefiles: centralize the logic to get outgoing largefiles
Before this patch, "overrides.getoutgoinglfiles()" (called by
"overrideoutgoing()" and "overridesummary()") and "lfilesrepo.push()"
implement similar logic to get outgoing largefiles separately.
This patch centralizes the logic to get outgoing largefiles in
"lfutil.getlfilestoupload()".
"lfutil.getlfilestoupload()" takes "addfunc" argument, because each
callers need different information (and it is useful for enhancement
in the future).
- "overrides.getoutgoinglfiles()" needs only filenames
- "lfilesrepo.push()" needs only hashes of largefiles
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Wed, 16 Apr 2014 00:37:24 +0900 |
parents | 0509ae083ec1 |
children | 66c6da0bc7e2 |
rev | line source |
---|---|
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): |
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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()) |