Mercurial > hg
annotate hgext/convert/git.py @ 14945:11aad09a6370
hgext: replace uses of hasattr with util.safehasattr
author | Augie Fackler <durin42@gmail.com> |
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date | Mon, 25 Jul 2011 20:37:12 -0500 |
parents | d297ee0b2d94 |
children | 589aab2ca716 101c8a1befb1 |
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.node import hex, nullid |
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11 from mercurial.i18n import _ |
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12 |
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13 from common import NoRepo, commit, converter_source, checktool |
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14 |
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15 class convert_git(converter_source): |
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16 # Windows does not support GIT_DIR= construct while other systems |
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17 # cannot remove environment variable. Just assume none have |
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18 # both issues. |
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19 if util.safehasattr(os, 'unsetenv'): |
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20 def gitopen(self, s, noerr=False): |
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21 prevgitdir = os.environ.get('GIT_DIR') |
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22 os.environ['GIT_DIR'] = self.path |
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23 try: |
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24 if noerr: |
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25 (stdin, stdout, stderr) = util.popen3(s) |
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26 return stdout |
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27 else: |
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28 return util.popen(s, 'rb') |
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29 finally: |
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30 if prevgitdir is None: |
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31 del os.environ['GIT_DIR'] |
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32 else: |
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33 os.environ['GIT_DIR'] = prevgitdir |
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34 else: |
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35 def gitopen(self, s, noerr=False): |
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36 if noerr: |
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37 (sin, so, se) = util.popen3('GIT_DIR=%s %s' % (self.path, s)) |
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38 return so |
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39 else: |
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40 return util.popen('GIT_DIR=%s %s' % (self.path, s), 'rb') |
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41 |
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42 def gitread(self, s): |
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43 fh = self.gitopen(s) |
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44 data = fh.read() |
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45 return data, fh.close() |
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46 |
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47 def __init__(self, ui, path, rev=None): |
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48 super(convert_git, self).__init__(ui, path, rev=rev) |
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49 |
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50 if os.path.isdir(path + "/.git"): |
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51 path += "/.git" |
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52 if not os.path.exists(path + "/objects"): |
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53 raise NoRepo(_("%s does not look like a Git repository") % path) |
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54 |
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55 checktool('git', 'git') |
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56 |
316 | 57 self.path = path |
58 | |
59 def getheads(self): | |
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60 if not self.rev: |
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61 heads, ret = self.gitread('git rev-parse --branches --remotes') |
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62 heads = heads.splitlines() |
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63 else: |
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64 heads, ret = self.gitread("git rev-parse --verify %s" % self.rev) |
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65 heads = [heads[:-1]] |
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66 if ret: |
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67 raise util.Abort(_('cannot retrieve git heads')) |
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68 return heads |
316 | 69 |
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70 def catfile(self, rev, type): |
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71 if rev == hex(nullid): |
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72 raise IOError() |
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73 data, ret = self.gitread("git cat-file %s %s" % (type, rev)) |
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74 if ret: |
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75 raise util.Abort(_('cannot read %r object at %s') % (type, rev)) |
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76 return data |
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77 |
316 | 78 def getfile(self, name, rev): |
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79 data = self.catfile(rev, "blob") |
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80 mode = self.modecache[(name, rev)] |
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81 return data, mode |
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82 |
316 | 83 def getchanges(self, version): |
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84 self.modecache = {} |
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85 fh = self.gitopen("git diff-tree -z --root -m -r %s" % version) |
316 | 86 changes = [] |
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87 seen = set() |
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88 entry = None |
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89 for l in fh.read().split('\x00'): |
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90 if not entry: |
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91 if not l.startswith(':'): |
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92 continue |
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93 entry = l |
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94 continue |
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95 f = l |
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96 if f not in seen: |
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97 seen.add(f) |
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98 entry = entry.split() |
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99 h = entry[3] |
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100 p = (entry[1] == "100755") |
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101 s = (entry[1] == "120000") |
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102 self.modecache[(f, h)] = (p and "x") or (s and "l") or "" |
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103 changes.append((f, h)) |
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104 entry = None |
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105 if fh.close(): |
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106 raise util.Abort(_('cannot read changes in %s') % version) |
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107 return (changes, {}) |
316 | 108 |
109 def getcommit(self, version): | |
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110 c = self.catfile(version, "commit") # read the commit hash |
316 | 111 end = c.find("\n\n") |
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112 message = c[end + 2:] |
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113 message = self.recode(message) |
316 | 114 l = c[:end].splitlines() |
115 parents = [] | |
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116 author = committer = None |
316 | 117 for e in l[1:]: |
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118 n, v = e.split(" ", 1) |
316 | 119 if n == "author": |
120 p = v.split() | |
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121 tm, tz = p[-2:] |
316 | 122 author = " ".join(p[:-2]) |
123 if author[0] == "<": author = author[1:-1] | |
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124 author = self.recode(author) |
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125 if n == "committer": |
431 | 126 p = v.split() |
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127 tm, tz = p[-2:] |
431 | 128 committer = " ".join(p[:-2]) |
129 if committer[0] == "<": committer = committer[1:-1] | |
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130 committer = self.recode(committer) |
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131 if n == "parent": |
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132 parents.append(v) |
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133 |
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134 if committer and committer != author: |
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135 message += "\ncommitter: %s\n" % committer |
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136 tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:] |
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137 tz = -int(tzs) * (int(tzh) * 3600 + int(tzm)) |
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138 date = tm + " " + str(tz) |
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139 |
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140 c = commit(parents=parents, date=date, author=author, desc=message, |
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141 rev=version) |
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142 return c |
316 | 143 |
694 | 144 def gettags(self): |
145 tags = {} | |
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146 fh = self.gitopen('git ls-remote --tags "%s"' % self.path) |
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147 prefix = 'refs/tags/' |
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148 for line in fh: |
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149 line = line.strip() |
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150 if not line.endswith("^{}"): |
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151 continue |
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152 node, tag = line.split(None, 1) |
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153 if not tag.startswith(prefix): |
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154 continue |
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155 tag = tag[len(prefix):-3] |
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156 tags[tag] = node |
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157 if fh.close(): |
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158 raise util.Abort(_('cannot read tags from %s') % self.path) |
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159 |
694 | 160 return tags |
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161 |
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162 def getchangedfiles(self, version, i): |
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163 changes = [] |
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164 if i is None: |
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165 fh = self.gitopen("git diff-tree --root -m -r %s" % version) |
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166 for l in fh: |
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167 if "\t" not in l: |
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168 continue |
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169 m, f = l[:-1].split("\t") |
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170 changes.append(f) |
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171 else: |
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172 fh = self.gitopen('git diff-tree --name-only --root -r %s "%s^%s" --' |
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173 % (version, version, i + 1)) |
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174 changes = [f.rstrip('\n') for f in fh] |
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175 if fh.close(): |
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176 raise util.Abort(_('cannot read changes in %s') % version) |
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177 |
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178 return changes |
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179 |
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180 def getbookmarks(self): |
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181 bookmarks = {} |
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182 |
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183 # Interesting references in git are prefixed |
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184 prefix = 'refs/heads/' |
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185 prefixlen = len(prefix) |
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186 |
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187 # factor two commands |
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188 gitcmd = { 'remote/': 'git ls-remote --heads origin', |
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189 '': 'git show-ref'} |
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190 |
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191 # Origin heads |
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192 for reftype in gitcmd: |
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193 try: |
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194 fh = self.gitopen(gitcmd[reftype], noerr=True) |
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195 for line in fh: |
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196 line = line.strip() |
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197 rev, name = line.split(None, 1) |
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198 if not name.startswith(prefix): |
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199 continue |
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200 name = '%s%s' % (reftype, name[prefixlen:]) |
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201 bookmarks[name] = rev |
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202 except: |
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203 pass |
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204 |
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205 return bookmarks |