Mercurial > hg
annotate hgext/convert/git.py @ 10987:b3af02b1f19f stable
convert/git: check status when reading output stream
author | Patrick Mezard <pmezard@gmail.com> |
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date | Sun, 25 Apr 2010 23:07:46 +0200 |
parents | 610f047326b9 |
children | 33010ff1fd6f |
rev | line source |
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1 # git.py - git support for the convert extension |
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2 # |
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3 # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 import os |
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9 from mercurial import util |
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10 from mercurial.i18n import _ |
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11 |
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12 from common import NoRepo, commit, converter_source, checktool |
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13 |
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14 class convert_git(converter_source): |
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15 # Windows does not support GIT_DIR= construct while other systems |
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16 # cannot remove environment variable. Just assume none have |
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17 # both issues. |
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18 if hasattr(os, 'unsetenv'): |
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19 def gitopen(self, s): |
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20 prevgitdir = os.environ.get('GIT_DIR') |
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21 os.environ['GIT_DIR'] = self.path |
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22 try: |
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23 return util.popen(s, 'rb') |
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24 finally: |
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25 if prevgitdir is None: |
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26 del os.environ['GIT_DIR'] |
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27 else: |
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28 os.environ['GIT_DIR'] = prevgitdir |
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29 else: |
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30 def gitopen(self, s): |
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31 return util.popen('GIT_DIR=%s %s' % (self.path, s), 'rb') |
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32 |
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33 def gitread(self, s): |
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34 fh = self.gitopen(s) |
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35 data = fh.read() |
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36 return data, fh.close() |
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37 |
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38 def __init__(self, ui, path, rev=None): |
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39 super(convert_git, self).__init__(ui, path, rev=rev) |
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40 |
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41 if os.path.isdir(path + "/.git"): |
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42 path += "/.git" |
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43 if not os.path.exists(path + "/objects"): |
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44 raise NoRepo(_("%s does not look like a Git repository") % path) |
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45 |
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46 checktool('git', 'git') |
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47 |
316 | 48 self.path = path |
49 | |
50 def getheads(self): | |
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51 if not self.rev: |
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52 heads, ret = self.gitread('git rev-parse --branches --remotes') |
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53 heads = heads.splitlines() |
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54 else: |
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55 heads, ret = self.gitread("git rev-parse --verify %s" % self.rev) |
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56 heads = [heads[:-1]] |
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57 if ret: |
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58 raise util.Abort(_('cannot retrieve git heads')) |
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59 return heads |
316 | 60 |
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61 def catfile(self, rev, type): |
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62 if rev == "0" * 40: |
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63 raise IOError() |
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64 data, ret = self.gitread("git cat-file %s %s" % (type, rev)) |
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65 if ret: |
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66 raise util.Abort(_('cannot read %r object at %s') % (type, rev)) |
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67 return data |
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68 |
316 | 69 def getfile(self, name, rev): |
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70 return self.catfile(rev, "blob") |
316 | 71 |
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72 def getmode(self, name, rev): |
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73 return self.modecache[(name, rev)] |
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74 |
316 | 75 def getchanges(self, version): |
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76 self.modecache = {} |
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77 fh = self.gitopen("git diff-tree -z --root -m -r %s" % version) |
316 | 78 changes = [] |
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79 seen = set() |
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80 entry = None |
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81 for l in fh.read().split('\x00'): |
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82 if not entry: |
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83 if not l.startswith(':'): |
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84 continue |
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85 entry = l |
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86 continue |
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87 f = l |
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88 if f not in seen: |
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89 seen.add(f) |
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90 entry = entry.split() |
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91 h = entry[3] |
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92 p = (entry[1] == "100755") |
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93 s = (entry[1] == "120000") |
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94 self.modecache[(f, h)] = (p and "x") or (s and "l") or "" |
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95 changes.append((f, h)) |
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96 entry = None |
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97 if fh.close(): |
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98 raise util.Abort(_('cannot read changes in %s') % version) |
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99 return (changes, {}) |
316 | 100 |
101 def getcommit(self, version): | |
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102 c = self.catfile(version, "commit") # read the commit hash |
316 | 103 end = c.find("\n\n") |
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104 message = c[end + 2:] |
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105 message = self.recode(message) |
316 | 106 l = c[:end].splitlines() |
107 parents = [] | |
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108 author = committer = None |
316 | 109 for e in l[1:]: |
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110 n, v = e.split(" ", 1) |
316 | 111 if n == "author": |
112 p = v.split() | |
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113 tm, tz = p[-2:] |
316 | 114 author = " ".join(p[:-2]) |
115 if author[0] == "<": author = author[1:-1] | |
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116 author = self.recode(author) |
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117 if n == "committer": |
431 | 118 p = v.split() |
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119 tm, tz = p[-2:] |
431 | 120 committer = " ".join(p[:-2]) |
121 if committer[0] == "<": committer = committer[1:-1] | |
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122 committer = self.recode(committer) |
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123 if n == "parent": |
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124 parents.append(v) |
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125 |
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126 if committer and committer != author: |
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127 message += "\ncommitter: %s\n" % committer |
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128 tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:] |
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129 tz = -int(tzs) * (int(tzh) * 3600 + int(tzm)) |
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130 date = tm + " " + str(tz) |
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131 |
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132 c = commit(parents=parents, date=date, author=author, desc=message, |
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133 rev=version) |
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134 return c |
316 | 135 |
694 | 136 def gettags(self): |
137 tags = {} | |
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138 fh = self.gitopen('git ls-remote --tags "%s"' % self.path) |
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139 prefix = 'refs/tags/' |
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140 for line in fh: |
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141 line = line.strip() |
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142 if not line.endswith("^{}"): |
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143 continue |
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144 node, tag = line.split(None, 1) |
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145 if not tag.startswith(prefix): |
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146 continue |
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147 tag = tag[len(prefix):-3] |
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148 tags[tag] = node |
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149 if fh.close(): |
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150 raise util.Abort(_('cannot read tags from %s') % self.path) |
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151 |
694 | 152 return tags |
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153 |
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154 def getchangedfiles(self, version, i): |
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155 changes = [] |
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156 if i is None: |
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157 fh = self.gitopen("git diff-tree --root -m -r %s" % version) |
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158 for l in fh: |
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159 if "\t" not in l: |
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160 continue |
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161 m, f = l[:-1].split("\t") |
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162 changes.append(f) |
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163 else: |
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164 fh = self.gitopen('git diff-tree --name-only --root -r %s "%s^%s" --' |
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165 % (version, version, i + 1)) |
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166 changes = [f.rstrip('\n') for f in fh] |
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167 if fh.close(): |
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168 raise util.Abort(_('cannot read changes in %s') % version) |
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169 |
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170 return changes |