Mercurial > hg
annotate hgext/convert/git.py @ 26361:6b4a0c602bec
merge: fix mergestate comment
author | timeless@mozdev.org |
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date | Fri, 25 Sep 2015 00:54:20 -0400 |
parents | e63d05fbae84 |
children | 56b2bcea2529 |
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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 import subprocess |
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10 from mercurial import util, config, error |
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11 from mercurial.node import hex, nullid |
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12 from mercurial.i18n import _ |
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13 |
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14 from common import NoRepo, commit, converter_source, checktool |
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15 |
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16 class submodule(object): |
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17 def __init__(self, path, node, url): |
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18 self.path = path |
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19 self.node = node |
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20 self.url = url |
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21 |
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22 def hgsub(self): |
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23 return "%s = [git]%s" % (self.path, self.url) |
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24 |
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25 def hgsubstate(self): |
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26 return "%s %s" % (self.node, self.path) |
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27 |
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28 class convert_git(converter_source): |
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29 # Windows does not support GIT_DIR= construct while other systems |
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30 # cannot remove environment variable. Just assume none have |
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31 # both issues. |
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32 if util.safehasattr(os, 'unsetenv'): |
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33 def gitopen(self, s, err=None): |
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34 prevgitdir = os.environ.get('GIT_DIR') |
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35 os.environ['GIT_DIR'] = self.path |
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36 try: |
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37 if err == subprocess.PIPE: |
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38 (stdin, stdout, stderr) = util.popen3(s) |
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39 return stdout |
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40 elif err == subprocess.STDOUT: |
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41 return self.popen_with_stderr(s) |
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42 else: |
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43 return util.popen(s, 'rb') |
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44 finally: |
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45 if prevgitdir is None: |
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46 del os.environ['GIT_DIR'] |
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47 else: |
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48 os.environ['GIT_DIR'] = prevgitdir |
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49 |
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50 def gitpipe(self, s): |
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51 prevgitdir = os.environ.get('GIT_DIR') |
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52 os.environ['GIT_DIR'] = self.path |
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53 try: |
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54 return util.popen3(s) |
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55 finally: |
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56 if prevgitdir is None: |
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57 del os.environ['GIT_DIR'] |
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58 else: |
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59 os.environ['GIT_DIR'] = prevgitdir |
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60 |
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61 else: |
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62 def gitopen(self, s, err=None): |
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63 if err == subprocess.PIPE: |
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64 (sin, so, se) = util.popen3('GIT_DIR=%s %s' % (self.path, s)) |
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65 return so |
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66 elif err == subprocess.STDOUT: |
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67 return self.popen_with_stderr(s) |
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68 else: |
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69 return util.popen('GIT_DIR=%s %s' % (self.path, s), 'rb') |
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70 |
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71 def gitpipe(self, s): |
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72 return util.popen3('GIT_DIR=%s %s' % (self.path, s)) |
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73 |
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74 def popen_with_stderr(self, s): |
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75 p = subprocess.Popen(s, shell=True, bufsize=-1, |
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76 close_fds=util.closefds, |
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77 stdin=subprocess.PIPE, |
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78 stdout=subprocess.PIPE, |
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79 stderr=subprocess.STDOUT, |
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80 universal_newlines=False, |
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81 env=None) |
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82 return p.stdout |
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83 |
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84 def gitread(self, s): |
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85 fh = self.gitopen(s) |
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86 data = fh.read() |
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87 return data, fh.close() |
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88 |
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89 def __init__(self, ui, path, revs=None): |
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90 super(convert_git, self).__init__(ui, path, revs=revs) |
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91 |
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92 if os.path.isdir(path + "/.git"): |
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93 path += "/.git" |
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94 if not os.path.exists(path + "/objects"): |
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95 raise NoRepo(_("%s does not look like a Git repository") % path) |
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96 |
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97 # The default value (50) is based on the default for 'git diff'. |
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98 similarity = ui.configint('convert', 'git.similarity', default=50) |
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99 if similarity < 0 or similarity > 100: |
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100 raise util.Abort(_('similarity must be between 0 and 100')) |
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101 if similarity > 0: |
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102 self.simopt = '-C%d%%' % similarity |
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103 findcopiesharder = ui.configbool('convert', 'git.findcopiesharder', |
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104 False) |
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105 if findcopiesharder: |
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106 self.simopt += ' --find-copies-harder' |
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107 else: |
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108 self.simopt = '' |
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109 |
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110 checktool('git', 'git') |
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111 |
316 | 112 self.path = path |
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113 self.submodules = [] |
316 | 114 |
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115 self.catfilepipe = self.gitpipe('git cat-file --batch') |
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116 |
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117 def after(self): |
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118 for f in self.catfilepipe: |
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119 f.close() |
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120 |
316 | 121 def getheads(self): |
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122 if not self.revs: |
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123 heads, ret = self.gitread('git rev-parse --branches --remotes') |
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124 heads = heads.splitlines() |
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125 if ret: |
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126 raise util.Abort(_('cannot retrieve git heads')) |
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127 else: |
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128 heads = [] |
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129 for rev in self.revs: |
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130 rawhead, ret = self.gitread("git rev-parse --verify %s" % rev) |
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131 heads.append(rawhead[:-1]) |
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132 if ret: |
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133 raise util.Abort(_('cannot retrieve git head "%s"') % rev) |
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134 return heads |
316 | 135 |
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136 def catfile(self, rev, type): |
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137 if rev == hex(nullid): |
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138 raise IOError |
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139 self.catfilepipe[0].write(rev+'\n') |
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140 self.catfilepipe[0].flush() |
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141 info = self.catfilepipe[1].readline().split() |
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142 if info[1] != type: |
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143 raise util.Abort(_('cannot read %r object at %s') % (type, rev)) |
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144 size = int(info[2]) |
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145 data = self.catfilepipe[1].read(size) |
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146 if len(data) < size: |
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147 raise util.Abort(_('cannot read %r object at %s: unexpected size') |
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148 % (type, rev)) |
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149 # read the trailing newline |
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150 self.catfilepipe[1].read(1) |
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151 return data |
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152 |
316 | 153 def getfile(self, name, rev): |
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154 if rev == hex(nullid): |
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155 return None, None |
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156 if name == '.hgsub': |
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157 data = '\n'.join([m.hgsub() for m in self.submoditer()]) |
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158 mode = '' |
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159 elif name == '.hgsubstate': |
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160 data = '\n'.join([m.hgsubstate() for m in self.submoditer()]) |
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161 mode = '' |
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162 else: |
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163 data = self.catfile(rev, "blob") |
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164 mode = self.modecache[(name, rev)] |
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165 return data, mode |
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166 |
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167 def submoditer(self): |
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168 null = hex(nullid) |
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169 for m in sorted(self.submodules, key=lambda p: p.path): |
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170 if m.node != null: |
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171 yield m |
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172 |
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173 def parsegitmodules(self, content): |
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174 """Parse the formatted .gitmodules file, example file format: |
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175 [submodule "sub"]\n |
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176 \tpath = sub\n |
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177 \turl = git://giturl\n |
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178 """ |
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179 self.submodules = [] |
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180 c = config.config() |
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181 # Each item in .gitmodules starts with whitespace that cant be parsed |
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182 c.parse('.gitmodules', '\n'.join(line.strip() for line in |
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183 content.split('\n'))) |
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184 for sec in c.sections(): |
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185 s = c[sec] |
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186 if 'url' in s and 'path' in s: |
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187 self.submodules.append(submodule(s['path'], '', s['url'])) |
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188 |
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189 def retrievegitmodules(self, version): |
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190 modules, ret = self.gitread("git show %s:%s" % (version, '.gitmodules')) |
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191 if ret: |
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192 # This can happen if a file is in the repo that has permissions |
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193 # 160000, but there is no .gitmodules file. |
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194 self.ui.warn(_("warning: cannot read submodules config file in " |
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195 "%s\n") % version) |
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196 return |
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197 |
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198 try: |
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199 self.parsegitmodules(modules) |
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200 except error.ParseError: |
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201 self.ui.warn(_("warning: unable to parse .gitmodules in %s\n") |
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202 % version) |
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203 return |
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204 |
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205 for m in self.submodules: |
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206 node, ret = self.gitread("git rev-parse %s:%s" % (version, m.path)) |
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207 if ret: |
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208 continue |
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209 m.node = node.strip() |
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210 |
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211 def getchanges(self, version, full): |
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212 if full: |
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213 raise util.Abort(_("convert from git do not support --full")) |
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214 self.modecache = {} |
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215 fh = self.gitopen("git diff-tree -z --root -m -r %s %s" % ( |
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216 self.simopt, version)) |
316 | 217 changes = [] |
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218 copies = {} |
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219 seen = set() |
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220 entry = None |
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221 subexists = [False] |
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222 subdeleted = [False] |
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223 difftree = fh.read().split('\x00') |
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224 lcount = len(difftree) |
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225 i = 0 |
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226 |
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227 skipsubmodules = self.ui.configbool('convert', 'git.skipsubmodules', |
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228 False) |
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229 def add(entry, f, isdest): |
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230 seen.add(f) |
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231 h = entry[3] |
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232 p = (entry[1] == "100755") |
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233 s = (entry[1] == "120000") |
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234 renamesource = (not isdest and entry[4][0] == 'R') |
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235 |
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236 if f == '.gitmodules': |
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237 if skipsubmodules: |
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238 return |
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239 |
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240 subexists[0] = True |
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241 if entry[4] == 'D' or renamesource: |
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242 subdeleted[0] = True |
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243 changes.append(('.hgsub', hex(nullid))) |
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244 else: |
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245 changes.append(('.hgsub', '')) |
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246 elif entry[1] == '160000' or entry[0] == ':160000': |
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247 if not skipsubmodules: |
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248 subexists[0] = True |
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249 else: |
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250 if renamesource: |
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251 h = hex(nullid) |
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252 self.modecache[(f, h)] = (p and "x") or (s and "l") or "" |
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253 changes.append((f, h)) |
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254 |
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255 while i < lcount: |
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256 l = difftree[i] |
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257 i += 1 |
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258 if not entry: |
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259 if not l.startswith(':'): |
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260 continue |
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261 entry = l.split() |
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262 continue |
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263 f = l |
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264 if entry[4][0] == 'C': |
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265 copysrc = f |
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266 copydest = difftree[i] |
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267 i += 1 |
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268 f = copydest |
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269 copies[copydest] = copysrc |
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270 if f not in seen: |
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271 add(entry, f, False) |
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272 # A file can be copied multiple times, or modified and copied |
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273 # simultaneously. So f can be repeated even if fdest isn't. |
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274 if entry[4][0] == 'R': |
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275 # rename: next line is the destination |
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276 fdest = difftree[i] |
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277 i += 1 |
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278 if fdest not in seen: |
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279 add(entry, fdest, True) |
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280 # .gitmodules isn't imported at all, so it being copied to |
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281 # and fro doesn't really make sense |
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282 if f != '.gitmodules' and fdest != '.gitmodules': |
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283 copies[fdest] = f |
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284 entry = None |
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285 if fh.close(): |
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286 raise util.Abort(_('cannot read changes in %s') % version) |
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287 |
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288 if subexists[0]: |
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289 if subdeleted[0]: |
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290 changes.append(('.hgsubstate', hex(nullid))) |
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291 else: |
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292 self.retrievegitmodules(version) |
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293 changes.append(('.hgsubstate', '')) |
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294 return (changes, copies, set()) |
316 | 295 |
296 def getcommit(self, version): | |
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297 c = self.catfile(version, "commit") # read the commit hash |
316 | 298 end = c.find("\n\n") |
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299 message = c[end + 2:] |
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300 message = self.recode(message) |
316 | 301 l = c[:end].splitlines() |
302 parents = [] | |
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303 author = committer = None |
316 | 304 for e in l[1:]: |
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305 n, v = e.split(" ", 1) |
316 | 306 if n == "author": |
307 p = v.split() | |
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308 tm, tz = p[-2:] |
316 | 309 author = " ".join(p[:-2]) |
310 if author[0] == "<": author = author[1:-1] | |
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311 author = self.recode(author) |
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312 if n == "committer": |
431 | 313 p = v.split() |
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314 tm, tz = p[-2:] |
431 | 315 committer = " ".join(p[:-2]) |
316 if committer[0] == "<": committer = committer[1:-1] | |
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317 committer = self.recode(committer) |
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318 if n == "parent": |
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319 parents.append(v) |
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320 |
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321 if committer and committer != author: |
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322 message += "\ncommitter: %s\n" % committer |
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323 tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:] |
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324 tz = -int(tzs) * (int(tzh) * 3600 + int(tzm)) |
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325 date = tm + " " + str(tz) |
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326 |
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327 c = commit(parents=parents, date=date, author=author, desc=message, |
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328 rev=version) |
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329 return c |
316 | 330 |
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331 def numcommits(self): |
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332 return len([None for _ in self.gitopen('git rev-list --all')]) |
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333 |
694 | 334 def gettags(self): |
335 tags = {} | |
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336 alltags = {} |
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337 fh = self.gitopen('git ls-remote --tags "%s"' % self.path, |
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338 err=subprocess.STDOUT) |
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339 prefix = 'refs/tags/' |
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340 |
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341 # Build complete list of tags, both annotated and bare ones |
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342 for line in fh: |
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343 line = line.strip() |
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344 if line.startswith("error:") or line.startswith("fatal:"): |
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345 raise util.Abort(_('cannot read tags from %s') % self.path) |
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346 node, tag = line.split(None, 1) |
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347 if not tag.startswith(prefix): |
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348 continue |
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349 alltags[tag[len(prefix):]] = node |
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350 if fh.close(): |
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351 raise util.Abort(_('cannot read tags from %s') % self.path) |
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352 |
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353 # Filter out tag objects for annotated tag refs |
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354 for tag in alltags: |
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355 if tag.endswith('^{}'): |
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356 tags[tag[:-3]] = alltags[tag] |
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357 else: |
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358 if tag + '^{}' in alltags: |
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359 continue |
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360 else: |
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361 tags[tag] = alltags[tag] |
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362 |
694 | 363 return tags |
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364 |
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365 def getchangedfiles(self, version, i): |
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366 changes = [] |
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367 if i is None: |
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368 fh = self.gitopen("git diff-tree --root -m -r %s" % version) |
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369 for l in fh: |
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370 if "\t" not in l: |
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371 continue |
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372 m, f = l[:-1].split("\t") |
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373 changes.append(f) |
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374 else: |
16683 | 375 fh = self.gitopen('git diff-tree --name-only --root -r %s ' |
376 '"%s^%s" --' % (version, version, i + 1)) | |
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377 changes = [f.rstrip('\n') for f in fh] |
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378 if fh.close(): |
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379 raise util.Abort(_('cannot read changes in %s') % version) |
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380 |
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381 return changes |
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382 |
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383 def getbookmarks(self): |
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384 bookmarks = {} |
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385 |
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386 # Handle local and remote branches |
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387 remoteprefix = self.ui.config('convert', 'git.remoteprefix', 'remote') |
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388 reftypes = [ |
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389 # (git prefix, hg prefix) |
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390 ('refs/remotes/origin/', remoteprefix + '/'), |
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391 ('refs/heads/', '') |
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392 ] |
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393 |
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394 exclude = set([ |
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395 'refs/remotes/origin/HEAD', |
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396 ]) |
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397 |
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398 try: |
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399 fh = self.gitopen('git show-ref', err=subprocess.PIPE) |
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400 for line in fh: |
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401 line = line.strip() |
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402 rev, name = line.split(None, 1) |
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403 # Process each type of branch |
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404 for gitprefix, hgprefix in reftypes: |
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405 if not name.startswith(gitprefix) or name in exclude: |
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406 continue |
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407 name = '%s%s' % (hgprefix, name[len(gitprefix):]) |
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408 bookmarks[name] = rev |
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409 except Exception: |
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410 pass |
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411 |
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412 return bookmarks |
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413 |
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414 def checkrevformat(self, revstr, mapname='splicemap'): |
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415 """ git revision string is a 40 byte hex """ |
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416 self.checkhexformat(revstr, mapname) |