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@@ -1,459 +1,460 b'' | |||
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1 | 1 | # Copyright 2009-2010 Gregory P. Ward |
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2 | 2 | # Copyright 2009-2010 Intelerad Medical Systems Incorporated |
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3 | 3 | # Copyright 2010-2011 Fog Creek Software |
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4 | 4 | # Copyright 2010-2011 Unity Technologies |
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5 | 5 | # |
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6 | 6 | # This software may be used and distributed according to the terms of the |
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7 | 7 | # GNU General Public License version 2 or any later version. |
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8 | 8 | |
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9 | 9 | '''largefiles utility code: must not import other modules in this package.''' |
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10 | 10 | |
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11 | 11 | import os |
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12 | 12 | import errno |
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13 | 13 | import platform |
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14 | 14 | import shutil |
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15 | 15 | import stat |
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16 | 16 | |
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17 | 17 | from mercurial import dirstate, httpconnection, match as match_, util, scmutil |
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18 | 18 | from mercurial.i18n import _ |
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19 | 19 | |
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20 | 20 | shortname = '.hglf' |
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21 | shortnameslash = shortname + '/' | |
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21 | 22 | longname = 'largefiles' |
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22 | 23 | |
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23 | 24 | |
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24 | 25 | # -- Portability wrappers ---------------------------------------------- |
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25 | 26 | |
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26 | 27 | def dirstatewalk(dirstate, matcher, unknown=False, ignored=False): |
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27 | 28 | return dirstate.walk(matcher, [], unknown, ignored) |
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28 | 29 | |
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29 | 30 | def repoadd(repo, list): |
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30 | 31 | add = repo[None].add |
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31 | 32 | return add(list) |
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32 | 33 | |
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33 | 34 | def reporemove(repo, list, unlink=False): |
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34 | 35 | def remove(list, unlink): |
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35 | 36 | wlock = repo.wlock() |
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36 | 37 | try: |
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37 | 38 | if unlink: |
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38 | 39 | for f in list: |
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39 | 40 | util.unlinkpath(repo.wjoin(f), ignoremissing=True) |
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40 | 41 | repo[None].forget(list) |
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41 | 42 | finally: |
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42 | 43 | wlock.release() |
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43 | 44 | return remove(list, unlink=unlink) |
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44 | 45 | |
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45 | 46 | def repoforget(repo, list): |
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46 | 47 | forget = repo[None].forget |
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47 | 48 | return forget(list) |
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48 | 49 | |
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49 | 50 | def findoutgoing(repo, remote, force): |
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50 | 51 | from mercurial import discovery |
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51 | 52 | outgoing = discovery.findcommonoutgoing(repo, remote.peer(), force=force) |
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52 | 53 | return outgoing.missing |
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53 | 54 | |
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54 | 55 | # -- Private worker functions ------------------------------------------ |
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55 | 56 | |
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56 | 57 | def getminsize(ui, assumelfiles, opt, default=10): |
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57 | 58 | lfsize = opt |
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58 | 59 | if not lfsize and assumelfiles: |
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59 | 60 | lfsize = ui.config(longname, 'minsize', default=default) |
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60 | 61 | if lfsize: |
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61 | 62 | try: |
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62 | 63 | lfsize = float(lfsize) |
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63 | 64 | except ValueError: |
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64 | 65 | raise util.Abort(_('largefiles: size must be number (not %s)\n') |
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65 | 66 | % lfsize) |
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66 | 67 | if lfsize is None: |
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67 | 68 | raise util.Abort(_('minimum size for largefiles must be specified')) |
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68 | 69 | return lfsize |
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69 | 70 | |
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70 | 71 | def link(src, dest): |
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71 | 72 | try: |
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72 | 73 | util.oslink(src, dest) |
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73 | 74 | except OSError: |
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74 | 75 | # if hardlinks fail, fallback on atomic copy |
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75 | 76 | dst = util.atomictempfile(dest) |
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76 | 77 | for chunk in util.filechunkiter(open(src, 'rb')): |
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77 | 78 | dst.write(chunk) |
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78 | 79 | dst.close() |
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79 | 80 | os.chmod(dest, os.stat(src).st_mode) |
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80 | 81 | |
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81 | 82 | def usercachepath(ui, hash): |
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82 | 83 | path = ui.configpath(longname, 'usercache', None) |
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83 | 84 | if path: |
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84 | 85 | path = os.path.join(path, hash) |
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85 | 86 | else: |
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86 | 87 | if os.name == 'nt': |
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87 | 88 | appdata = os.getenv('LOCALAPPDATA', os.getenv('APPDATA')) |
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88 | 89 | if appdata: |
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89 | 90 | path = os.path.join(appdata, longname, hash) |
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90 | 91 | elif platform.system() == 'Darwin': |
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91 | 92 | home = os.getenv('HOME') |
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92 | 93 | if home: |
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93 | 94 | path = os.path.join(home, 'Library', 'Caches', |
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94 | 95 | longname, hash) |
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95 | 96 | elif os.name == 'posix': |
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96 | 97 | path = os.getenv('XDG_CACHE_HOME') |
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97 | 98 | if path: |
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98 | 99 | path = os.path.join(path, longname, hash) |
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99 | 100 | else: |
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100 | 101 | home = os.getenv('HOME') |
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101 | 102 | if home: |
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102 | 103 | path = os.path.join(home, '.cache', longname, hash) |
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103 | 104 | else: |
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104 | 105 | raise util.Abort(_('unknown operating system: %s\n') % os.name) |
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105 | 106 | return path |
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106 | 107 | |
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107 | 108 | def inusercache(ui, hash): |
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108 | 109 | path = usercachepath(ui, hash) |
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109 | 110 | return path and os.path.exists(path) |
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110 | 111 | |
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111 | 112 | def findfile(repo, hash): |
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112 | 113 | if instore(repo, hash): |
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113 | 114 | repo.ui.note(_('found %s in store\n') % hash) |
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114 | 115 | return storepath(repo, hash) |
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115 | 116 | elif inusercache(repo.ui, hash): |
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116 | 117 | repo.ui.note(_('found %s in system cache\n') % hash) |
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117 | 118 | path = storepath(repo, hash) |
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118 | 119 | util.makedirs(os.path.dirname(path)) |
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119 | 120 | link(usercachepath(repo.ui, hash), path) |
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120 | 121 | return path |
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121 | 122 | return None |
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122 | 123 | |
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123 | 124 | class largefilesdirstate(dirstate.dirstate): |
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124 | 125 | def __getitem__(self, key): |
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125 | 126 | return super(largefilesdirstate, self).__getitem__(unixpath(key)) |
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126 | 127 | def normal(self, f): |
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127 | 128 | return super(largefilesdirstate, self).normal(unixpath(f)) |
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128 | 129 | def remove(self, f): |
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129 | 130 | return super(largefilesdirstate, self).remove(unixpath(f)) |
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130 | 131 | def add(self, f): |
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131 | 132 | return super(largefilesdirstate, self).add(unixpath(f)) |
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132 | 133 | def drop(self, f): |
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133 | 134 | return super(largefilesdirstate, self).drop(unixpath(f)) |
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134 | 135 | def forget(self, f): |
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135 | 136 | return super(largefilesdirstate, self).forget(unixpath(f)) |
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136 | 137 | def normallookup(self, f): |
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137 | 138 | return super(largefilesdirstate, self).normallookup(unixpath(f)) |
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138 | 139 | def _ignore(self): |
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139 | 140 | return False |
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140 | 141 | |
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141 | 142 | def openlfdirstate(ui, repo, create=True): |
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142 | 143 | ''' |
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143 | 144 | Return a dirstate object that tracks largefiles: i.e. its root is |
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144 | 145 | the repo root, but it is saved in .hg/largefiles/dirstate. |
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145 | 146 | ''' |
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146 | 147 | lfstoredir = repo.join(longname) |
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147 | 148 | opener = scmutil.opener(lfstoredir) |
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148 | 149 | lfdirstate = largefilesdirstate(opener, ui, repo.root, |
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149 | 150 | repo.dirstate._validate) |
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150 | 151 | |
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151 | 152 | # If the largefiles dirstate does not exist, populate and create |
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152 | 153 | # it. This ensures that we create it on the first meaningful |
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153 | 154 | # largefiles operation in a new clone. |
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154 | 155 | if create and not os.path.exists(os.path.join(lfstoredir, 'dirstate')): |
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155 | 156 | util.makedirs(lfstoredir) |
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156 | 157 | matcher = getstandinmatcher(repo) |
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157 | 158 | for standin in dirstatewalk(repo.dirstate, matcher): |
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158 | 159 | lfile = splitstandin(standin) |
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159 | 160 | hash = readstandin(repo, lfile) |
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160 | 161 | lfdirstate.normallookup(lfile) |
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161 | 162 | try: |
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162 | 163 | if hash == hashfile(repo.wjoin(lfile)): |
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163 | 164 | lfdirstate.normal(lfile) |
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164 | 165 | except OSError, err: |
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165 | 166 | if err.errno != errno.ENOENT: |
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166 | 167 | raise |
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167 | 168 | return lfdirstate |
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168 | 169 | |
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169 | 170 | def lfdirstatestatus(lfdirstate, repo, rev): |
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170 | 171 | match = match_.always(repo.root, repo.getcwd()) |
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171 | 172 | s = lfdirstate.status(match, [], False, False, False) |
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172 | 173 | unsure, modified, added, removed, missing, unknown, ignored, clean = s |
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173 | 174 | for lfile in unsure: |
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174 | 175 | if repo[rev][standin(lfile)].data().strip() != \ |
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175 | 176 | hashfile(repo.wjoin(lfile)): |
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176 | 177 | modified.append(lfile) |
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177 | 178 | else: |
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178 | 179 | clean.append(lfile) |
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179 | 180 | lfdirstate.normal(lfile) |
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180 | 181 | return (modified, added, removed, missing, unknown, ignored, clean) |
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181 | 182 | |
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182 | 183 | def listlfiles(repo, rev=None, matcher=None): |
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183 | 184 | '''return a list of largefiles in the working copy or the |
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184 | 185 | specified changeset''' |
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185 | 186 | |
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186 | 187 | if matcher is None: |
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187 | 188 | matcher = getstandinmatcher(repo) |
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188 | 189 | |
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189 | 190 | # ignore unknown files in working directory |
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190 | 191 | return [splitstandin(f) |
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191 | 192 | for f in repo[rev].walk(matcher) |
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192 | 193 | if rev is not None or repo.dirstate[f] != '?'] |
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193 | 194 | |
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194 | 195 | def instore(repo, hash): |
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195 | 196 | return os.path.exists(storepath(repo, hash)) |
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196 | 197 | |
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197 | 198 | def storepath(repo, hash): |
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198 | 199 | return repo.join(os.path.join(longname, hash)) |
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199 | 200 | |
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200 | 201 | def copyfromcache(repo, hash, filename): |
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201 | 202 | '''Copy the specified largefile from the repo or system cache to |
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202 | 203 | filename in the repository. Return true on success or false if the |
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203 | 204 | file was not found in either cache (which should not happened: |
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204 | 205 | this is meant to be called only after ensuring that the needed |
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205 | 206 | largefile exists in the cache).''' |
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206 | 207 | path = findfile(repo, hash) |
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207 | 208 | if path is None: |
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208 | 209 | return False |
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209 | 210 | util.makedirs(os.path.dirname(repo.wjoin(filename))) |
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210 | 211 | # The write may fail before the file is fully written, but we |
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211 | 212 | # don't use atomic writes in the working copy. |
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212 | 213 | shutil.copy(path, repo.wjoin(filename)) |
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213 | 214 | return True |
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214 | 215 | |
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215 | 216 | def copytostore(repo, rev, file, uploaded=False): |
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216 | 217 | hash = readstandin(repo, file, rev) |
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217 | 218 | if instore(repo, hash): |
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218 | 219 | return |
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219 | 220 | copytostoreabsolute(repo, repo.wjoin(file), hash) |
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220 | 221 | |
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221 | 222 | def copyalltostore(repo, node): |
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222 | 223 | '''Copy all largefiles in a given revision to the store''' |
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223 | 224 | |
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224 | 225 | ctx = repo[node] |
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225 | 226 | for filename in ctx.files(): |
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226 | 227 | if isstandin(filename) and filename in ctx.manifest(): |
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227 | 228 | realfile = splitstandin(filename) |
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228 | 229 | copytostore(repo, ctx.node(), realfile) |
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229 | 230 | |
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230 | 231 | |
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231 | 232 | def copytostoreabsolute(repo, file, hash): |
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232 | 233 | util.makedirs(os.path.dirname(storepath(repo, hash))) |
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233 | 234 | if inusercache(repo.ui, hash): |
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234 | 235 | link(usercachepath(repo.ui, hash), storepath(repo, hash)) |
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235 | 236 | elif not getattr(repo, "_isconverting", False): |
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236 | 237 | dst = util.atomictempfile(storepath(repo, hash), |
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237 | 238 | createmode=repo.store.createmode) |
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238 | 239 | for chunk in util.filechunkiter(open(file, 'rb')): |
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239 | 240 | dst.write(chunk) |
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240 | 241 | dst.close() |
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241 | 242 | linktousercache(repo, hash) |
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242 | 243 | |
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243 | 244 | def linktousercache(repo, hash): |
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244 | 245 | path = usercachepath(repo.ui, hash) |
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245 | 246 | if path: |
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246 | 247 | util.makedirs(os.path.dirname(path)) |
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247 | 248 | link(storepath(repo, hash), path) |
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248 | 249 | |
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249 | 250 | def getstandinmatcher(repo, pats=[], opts={}): |
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250 | 251 | '''Return a match object that applies pats to the standin directory''' |
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251 | 252 | standindir = repo.wjoin(shortname) |
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252 | 253 | if pats: |
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253 | 254 | # patterns supplied: search standin directory relative to current dir |
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254 | 255 | cwd = repo.getcwd() |
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255 | 256 | if os.path.isabs(cwd): |
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256 | 257 | # cwd is an absolute path for hg -R <reponame> |
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257 | 258 | # work relative to the repository root in this case |
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258 | 259 | cwd = '' |
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259 | 260 | pats = [os.path.join(standindir, cwd, pat) for pat in pats] |
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260 | 261 | elif os.path.isdir(standindir): |
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261 | 262 | # no patterns: relative to repo root |
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262 | 263 | pats = [standindir] |
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263 | 264 | else: |
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264 | 265 | # no patterns and no standin dir: return matcher that matches nothing |
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265 | 266 | return match_.match(repo.root, None, [], exact=True) |
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266 | 267 | |
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267 | 268 | # no warnings about missing files or directories |
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268 | 269 | match = scmutil.match(repo[None], pats, opts) |
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269 | 270 | match.bad = lambda f, msg: None |
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270 | 271 | return match |
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271 | 272 | |
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272 | 273 | def composestandinmatcher(repo, rmatcher): |
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273 | 274 | '''Return a matcher that accepts standins corresponding to the |
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274 | 275 | files accepted by rmatcher. Pass the list of files in the matcher |
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275 | 276 | as the paths specified by the user.''' |
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276 | 277 | smatcher = getstandinmatcher(repo, rmatcher.files()) |
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277 | 278 | isstandin = smatcher.matchfn |
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278 | 279 | def composedmatchfn(f): |
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279 | 280 | return isstandin(f) and rmatcher.matchfn(splitstandin(f)) |
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280 | 281 | smatcher.matchfn = composedmatchfn |
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281 | 282 | |
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282 | 283 | return smatcher |
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283 | 284 | |
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284 | 285 | def standin(filename): |
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285 | 286 | '''Return the repo-relative path to the standin for the specified big |
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286 | 287 | file.''' |
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287 | 288 | # Notes: |
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288 | 289 | # 1) Some callers want an absolute path, but for instance addlargefiles |
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289 | 290 | # needs it repo-relative so it can be passed to repoadd(). So leave |
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290 | 291 | # it up to the caller to use repo.wjoin() to get an absolute path. |
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291 | 292 | # 2) Join with '/' because that's what dirstate always uses, even on |
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292 | 293 | # Windows. Change existing separator to '/' first in case we are |
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293 | 294 | # passed filenames from an external source (like the command line). |
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294 |
return shortname |
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295 | return shortnameslash + util.pconvert(filename) | |
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295 | 296 | |
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296 | 297 | def isstandin(filename): |
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297 | 298 | '''Return true if filename is a big file standin. filename must be |
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298 | 299 | in Mercurial's internal form (slash-separated).''' |
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299 |
return filename.startswith(shortname |
|
|
300 | return filename.startswith(shortnameslash) | |
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300 | 301 | |
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301 | 302 | def splitstandin(filename): |
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302 | 303 | # Split on / because that's what dirstate always uses, even on Windows. |
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303 | 304 | # Change local separator to / first just in case we are passed filenames |
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304 | 305 | # from an external source (like the command line). |
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305 | 306 | bits = util.pconvert(filename).split('/', 1) |
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306 | 307 | if len(bits) == 2 and bits[0] == shortname: |
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307 | 308 | return bits[1] |
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308 | 309 | else: |
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309 | 310 | return None |
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310 | 311 | |
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311 | 312 | def updatestandin(repo, standin): |
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312 | 313 | file = repo.wjoin(splitstandin(standin)) |
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313 | 314 | if os.path.exists(file): |
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314 | 315 | hash = hashfile(file) |
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315 | 316 | executable = getexecutable(file) |
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316 | 317 | writestandin(repo, standin, hash, executable) |
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317 | 318 | |
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318 | 319 | def readstandin(repo, filename, node=None): |
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319 | 320 | '''read hex hash from standin for filename at given node, or working |
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320 | 321 | directory if no node is given''' |
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321 | 322 | return repo[node][standin(filename)].data().strip() |
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322 | 323 | |
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323 | 324 | def writestandin(repo, standin, hash, executable): |
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324 | 325 | '''write hash to <repo.root>/<standin>''' |
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325 | 326 | writehash(hash, repo.wjoin(standin), executable) |
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326 | 327 | |
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327 | 328 | def copyandhash(instream, outfile): |
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328 | 329 | '''Read bytes from instream (iterable) and write them to outfile, |
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329 | 330 | computing the SHA-1 hash of the data along the way. Close outfile |
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330 | 331 | when done and return the binary hash.''' |
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331 | 332 | hasher = util.sha1('') |
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332 | 333 | for data in instream: |
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333 | 334 | hasher.update(data) |
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334 | 335 | outfile.write(data) |
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335 | 336 | |
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336 | 337 | # Blecch: closing a file that somebody else opened is rude and |
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337 | 338 | # wrong. But it's so darn convenient and practical! After all, |
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338 | 339 | # outfile was opened just to copy and hash. |
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339 | 340 | outfile.close() |
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340 | 341 | |
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341 | 342 | return hasher.digest() |
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342 | 343 | |
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343 | 344 | def hashrepofile(repo, file): |
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344 | 345 | return hashfile(repo.wjoin(file)) |
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345 | 346 | |
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346 | 347 | def hashfile(file): |
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347 | 348 | if not os.path.exists(file): |
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348 | 349 | return '' |
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349 | 350 | hasher = util.sha1('') |
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350 | 351 | fd = open(file, 'rb') |
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351 | 352 | for data in blockstream(fd): |
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352 | 353 | hasher.update(data) |
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353 | 354 | fd.close() |
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354 | 355 | return hasher.hexdigest() |
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355 | 356 | |
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356 | 357 | class limitreader(object): |
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357 | 358 | def __init__(self, f, limit): |
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358 | 359 | self.f = f |
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359 | 360 | self.limit = limit |
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360 | 361 | |
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361 | 362 | def read(self, length): |
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362 | 363 | if self.limit == 0: |
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363 | 364 | return '' |
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364 | 365 | length = length > self.limit and self.limit or length |
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365 | 366 | self.limit -= length |
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366 | 367 | return self.f.read(length) |
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367 | 368 | |
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368 | 369 | def close(self): |
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369 | 370 | pass |
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370 | 371 | |
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371 | 372 | def blockstream(infile, blocksize=128 * 1024): |
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372 | 373 | """Generator that yields blocks of data from infile and closes infile.""" |
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373 | 374 | while True: |
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374 | 375 | data = infile.read(blocksize) |
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375 | 376 | if not data: |
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376 | 377 | break |
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377 | 378 | yield data |
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378 | 379 | # same blecch as copyandhash() above |
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379 | 380 | infile.close() |
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380 | 381 | |
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381 | 382 | def writehash(hash, filename, executable): |
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382 | 383 | util.makedirs(os.path.dirname(filename)) |
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383 | 384 | util.writefile(filename, hash + '\n') |
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384 | 385 | os.chmod(filename, getmode(executable)) |
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385 | 386 | |
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386 | 387 | def getexecutable(filename): |
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387 | 388 | mode = os.stat(filename).st_mode |
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388 | 389 | return ((mode & stat.S_IXUSR) and |
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389 | 390 | (mode & stat.S_IXGRP) and |
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390 | 391 | (mode & stat.S_IXOTH)) |
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391 | 392 | |
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392 | 393 | def getmode(executable): |
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393 | 394 | if executable: |
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394 | 395 | return 0755 |
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395 | 396 | else: |
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396 | 397 | return 0644 |
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397 | 398 | |
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398 | 399 | def urljoin(first, second, *arg): |
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399 | 400 | def join(left, right): |
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400 | 401 | if not left.endswith('/'): |
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401 | 402 | left += '/' |
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402 | 403 | if right.startswith('/'): |
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403 | 404 | right = right[1:] |
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404 | 405 | return left + right |
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405 | 406 | |
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406 | 407 | url = join(first, second) |
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407 | 408 | for a in arg: |
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408 | 409 | url = join(url, a) |
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409 | 410 | return url |
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410 | 411 | |
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411 | 412 | def hexsha1(data): |
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412 | 413 | """hexsha1 returns the hex-encoded sha1 sum of the data in the file-like |
|
413 | 414 | object data""" |
|
414 | 415 | h = util.sha1() |
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415 | 416 | for chunk in util.filechunkiter(data): |
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416 | 417 | h.update(chunk) |
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417 | 418 | return h.hexdigest() |
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418 | 419 | |
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419 | 420 | def httpsendfile(ui, filename): |
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420 | 421 | return httpconnection.httpsendfile(ui, filename, 'rb') |
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421 | 422 | |
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422 | 423 | def unixpath(path): |
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423 | 424 | '''Return a version of path normalized for use with the lfdirstate.''' |
|
424 | 425 | return util.pconvert(os.path.normpath(path)) |
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425 | 426 | |
|
426 | 427 | def islfilesrepo(repo): |
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427 | 428 | if ('largefiles' in repo.requirements and |
|
428 |
util.any(shortname |
|
|
429 | util.any(shortnameslash in f[0] for f in repo.store.datafiles())): | |
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429 | 430 | return True |
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430 | 431 | |
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431 | 432 | return util.any(openlfdirstate(repo.ui, repo, False)) |
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432 | 433 | |
|
433 | 434 | class storeprotonotcapable(Exception): |
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434 | 435 | def __init__(self, storetypes): |
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435 | 436 | self.storetypes = storetypes |
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436 | 437 | |
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437 | 438 | def getcurrentheads(repo): |
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438 | 439 | branches = repo.branchmap() |
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439 | 440 | heads = [] |
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440 | 441 | for branch in branches: |
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441 | 442 | newheads = repo.branchheads(branch) |
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442 | 443 | heads = heads + newheads |
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443 | 444 | return heads |
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444 | 445 | |
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445 | 446 | def getstandinsstate(repo): |
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446 | 447 | standins = [] |
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447 | 448 | matcher = getstandinmatcher(repo) |
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448 | 449 | for standin in dirstatewalk(repo.dirstate, matcher): |
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449 | 450 | lfile = splitstandin(standin) |
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450 | 451 | standins.append((lfile, readstandin(repo, lfile))) |
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451 | 452 | return standins |
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452 | 453 | |
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453 | 454 | def getlfilestoupdate(oldstandins, newstandins): |
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454 | 455 | changedstandins = set(oldstandins).symmetric_difference(set(newstandins)) |
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455 | 456 | filelist = [] |
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456 | 457 | for f in changedstandins: |
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457 | 458 | if f[0] not in filelist: |
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458 | 459 | filelist.append(f[0]) |
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459 | 460 | return filelist |
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