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1 # hg.py - repository classes for mercurial
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2 #
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2, incorporated herein by reference.
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8
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9 from i18n import _
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10 from lock import release
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11 import localrepo, bundlerepo, httprepo, sshrepo, statichttprepo
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12 import lock, util, extensions, error
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13 import merge as _merge
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14 import verify as _verify
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15 import errno, os, shutil
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16
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17 def _local(path):
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18 return (os.path.isfile(util.drop_scheme('file', path)) and
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19 bundlerepo or localrepo)
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20
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21 def parseurl(url, revs=[]):
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22 '''parse url#branch, returning url, branch + revs'''
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23
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24 if '#' not in url:
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25 return url, (revs or None), revs and revs[-1] or None
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26
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27 url, branch = url.split('#', 1)
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28 checkout = revs and revs[-1] or branch
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29 return url, (revs or []) + [branch], checkout
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30
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31 schemes = {
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32 'bundle': bundlerepo,
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33 'file': _local,
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34 'http': httprepo,
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35 'https': httprepo,
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36 'ssh': sshrepo,
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37 'static-http': statichttprepo,
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38 }
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39
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40 def _lookup(path):
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41 scheme = 'file'
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42 if path:
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43 c = path.find(':')
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44 if c > 0:
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45 scheme = path[:c]
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46 thing = schemes.get(scheme) or schemes['file']
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47 try:
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48 return thing(path)
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49 except TypeError:
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50 return thing
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51
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52 def islocal(repo):
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53 '''return true if repo or path is local'''
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54 if isinstance(repo, str):
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55 try:
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56 return _lookup(repo).islocal(repo)
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57 except AttributeError:
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58 return False
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59 return repo.local()
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60
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61 def repository(ui, path='', create=False):
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62 """return a repository object for the specified path"""
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63 repo = _lookup(path).instance(ui, path, create)
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64 ui = getattr(repo, "ui", ui)
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65 for name, module in extensions.extensions():
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66 hook = getattr(module, 'reposetup', None)
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67 if hook:
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68 hook(ui, repo)
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69 return repo
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70
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71 def defaultdest(source):
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72 '''return default destination of clone if none is given'''
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73 return os.path.basename(os.path.normpath(source))
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74
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75 def localpath(path):
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76 if path.startswith('file://localhost/'):
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77 return path[16:]
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78 if path.startswith('file://'):
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79 return path[7:]
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80 if path.startswith('file:'):
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81 return path[5:]
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82 return path
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83
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84 def share(ui, source, dest=None, update=True):
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85 '''create a shared repository'''
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86
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87 if not islocal(source):
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88 raise util.Abort(_('can only share local repositories'))
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89
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90 if not dest:
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91 dest = os.path.basename(source)
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92
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93 if isinstance(source, str):
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94 origsource = ui.expandpath(source)
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95 source, rev, checkout = parseurl(origsource, '')
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96 srcrepo = repository(ui, source)
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97 else:
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98 srcrepo = source
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99 origsource = source = srcrepo.url()
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100 checkout = None
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101
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102 sharedpath = srcrepo.sharedpath # if our source is already sharing
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103
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104 root = os.path.realpath(dest)
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105 roothg = os.path.join(root, '.hg')
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106
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107 if os.path.exists(roothg):
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108 raise util.Abort(_('destination already exists'))
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109
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110 if not os.path.isdir(root):
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111 os.mkdir(root)
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112 os.mkdir(roothg)
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113
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114 requirements = ''
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115 try:
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116 requirements = srcrepo.opener('requires').read()
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117 except IOError, inst:
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118 if inst.errno != errno.ENOENT:
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119 raise
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120
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121 requirements += 'shared\n'
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122 file(os.path.join(roothg, 'requires'), 'w').write(requirements)
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123 file(os.path.join(roothg, 'sharedpath'), 'w').write(sharedpath)
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124
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125 default = srcrepo.ui.config('paths', 'default')
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126 if default:
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127 f = file(os.path.join(roothg, 'hgrc'), 'w')
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128 f.write('[paths]\ndefault = %s\n' % default)
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129 f.close()
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130
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131 r = repository(ui, root)
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132
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133 if update:
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134 r.ui.status(_("updating working directory\n"))
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135 if update is not True:
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136 checkout = update
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137 for test in (checkout, 'default', 'tip'):
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138 try:
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139 uprev = r.lookup(test)
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140 break
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141 except:
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142 continue
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143 _update(r, uprev)
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144
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145 def clone(ui, source, dest=None, pull=False, rev=None, update=True,
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146 stream=False):
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147 """Make a copy of an existing repository.
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148
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149 Create a copy of an existing repository in a new directory. The
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150 source and destination are URLs, as passed to the repository
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151 function. Returns a pair of repository objects, the source and
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152 newly created destination.
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153
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154 The location of the source is added to the new repository's
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155 .hg/hgrc file, as the default to be used for future pulls and
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156 pushes.
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157
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158 If an exception is raised, the partly cloned/updated destination
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159 repository will be deleted.
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160
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161 Arguments:
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162
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163 source: repository object or URL
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164
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165 dest: URL of destination repository to create (defaults to base
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166 name of source repository)
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167
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168 pull: always pull from source repository, even in local case
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169
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170 stream: stream raw data uncompressed from repository (fast over
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171 LAN, slow over WAN)
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172
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173 rev: revision to clone up to (implies pull=True)
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174
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175 update: update working directory after clone completes, if
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176 destination is local repository (True means update to default rev,
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177 anything else is treated as a revision)
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178 """
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179
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180 if isinstance(source, str):
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181 origsource = ui.expandpath(source)
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182 source, rev, checkout = parseurl(origsource, rev)
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183 src_repo = repository(ui, source)
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184 else:
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185 src_repo = source
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186 origsource = source = src_repo.url()
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187 checkout = rev and rev[-1] or None
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188
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189 if dest is None:
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190 dest = defaultdest(source)
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191 ui.status(_("destination directory: %s\n") % dest)
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192
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193 dest = localpath(dest)
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194 source = localpath(source)
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195
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196 if os.path.exists(dest):
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197 if not os.path.isdir(dest):
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198 raise util.Abort(_("destination '%s' already exists") % dest)
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199 elif os.listdir(dest):
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200 raise util.Abort(_("destination '%s' is not empty") % dest)
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201
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202 class DirCleanup(object):
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203 def __init__(self, dir_):
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204 self.rmtree = shutil.rmtree
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205 self.dir_ = dir_
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206 def close(self):
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207 self.dir_ = None
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208 def cleanup(self):
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209 if self.dir_:
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210 self.rmtree(self.dir_, True)
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211
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212 src_lock = dest_lock = dir_cleanup = None
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213 try:
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214 if islocal(dest):
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215 dir_cleanup = DirCleanup(dest)
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216
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217 abspath = origsource
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218 copy = False
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219 if src_repo.cancopy() and islocal(dest):
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220 abspath = os.path.abspath(util.drop_scheme('file', origsource))
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221 copy = not pull and not rev
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222
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223 if copy:
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224 try:
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225 # we use a lock here because if we race with commit, we
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226 # can end up with extra data in the cloned revlogs that's
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227 # not pointed to by changesets, thus causing verify to
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228 # fail
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229 src_lock = src_repo.lock(wait=False)
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230 except error.LockError:
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231 copy = False
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232
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233 if copy:
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234 src_repo.hook('preoutgoing', throw=True, source='clone')
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235 hgdir = os.path.realpath(os.path.join(dest, ".hg"))
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236 if not os.path.exists(dest):
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237 os.mkdir(dest)
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238 else:
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239 # only clean up directories we create ourselves
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240 dir_cleanup.dir_ = hgdir
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241 try:
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242 dest_path = hgdir
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243 os.mkdir(dest_path)
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244 except OSError, inst:
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245 if inst.errno == errno.EEXIST:
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246 dir_cleanup.close()
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247 raise util.Abort(_("destination '%s' already exists")
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248 % dest)
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249 raise
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250
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251 for f in src_repo.store.copylist():
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252 src = os.path.join(src_repo.path, f)
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253 dst = os.path.join(dest_path, f)
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254 dstbase = os.path.dirname(dst)
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255 if dstbase and not os.path.exists(dstbase):
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256 os.mkdir(dstbase)
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257 if os.path.exists(src):
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258 if dst.endswith('data'):
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259 # lock to avoid premature writing to the target
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260 dest_lock = lock.lock(os.path.join(dstbase, "lock"))
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261 util.copyfiles(src, dst)
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262
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263 # we need to re-init the repo after manually copying the data
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264 # into it
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265 dest_repo = repository(ui, dest)
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266 src_repo.hook('outgoing', source='clone', node='0'*40)
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267 else:
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268 try:
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269 dest_repo = repository(ui, dest, create=True)
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270 except OSError, inst:
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271 if inst.errno == errno.EEXIST:
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272 dir_cleanup.close()
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273 raise util.Abort(_("destination '%s' already exists")
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274 % dest)
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275 raise
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276
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277 revs = None
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278 if rev:
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279 if 'lookup' not in src_repo.capabilities:
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280 raise util.Abort(_("src repository does not support revision "
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281 "lookup and so doesn't support clone by "
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282 "revision"))
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283 revs = [src_repo.lookup(r) for r in rev]
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284 checkout = revs[0]
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285 if dest_repo.local():
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286 dest_repo.clone(src_repo, heads=revs, stream=stream)
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287 elif src_repo.local():
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288 src_repo.push(dest_repo, revs=revs)
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289 else:
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290 raise util.Abort(_("clone from remote to remote not supported"))
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291
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292 if dir_cleanup:
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293 dir_cleanup.close()
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294
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295 if dest_repo.local():
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296 fp = dest_repo.opener("hgrc", "w", text=True)
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297 fp.write("[paths]\n")
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298 fp.write("default = %s\n" % abspath)
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299 fp.close()
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300
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301 dest_repo.ui.setconfig('paths', 'default', abspath)
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302
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303 if update:
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304 dest_repo.ui.status(_("updating working directory\n"))
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305 if update is not True:
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306 checkout = update
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307 for test in (checkout, 'default', 'tip'):
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308 try:
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309 uprev = dest_repo.lookup(test)
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310 break
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311 except:
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312 continue
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313 _update(dest_repo, uprev)
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314
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315 return src_repo, dest_repo
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316 finally:
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317 release(src_lock, dest_lock)
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318 if dir_cleanup is not None:
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319 dir_cleanup.cleanup()
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320
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321 def _showstats(repo, stats):
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322 stats = ((stats[0], _("updated")),
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323 (stats[1], _("merged")),
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324 (stats[2], _("removed")),
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325 (stats[3], _("unresolved")))
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326 note = ", ".join([_("%d files %s") % s for s in stats])
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327 repo.ui.status("%s\n" % note)
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328
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329 def update(repo, node):
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330 """update the working directory to node, merging linear changes"""
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331 stats = _merge.update(repo, node, False, False, None)
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332 _showstats(repo, stats)
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333 if stats[3]:
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334 repo.ui.status(_("use 'hg resolve' to retry unresolved file merges\n"))
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335 return stats[3] > 0
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336
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337 # naming conflict in clone()
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338 _update = update
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339
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340 def clean(repo, node, show_stats=True):
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341 """forcibly switch the working directory to node, clobbering changes"""
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342 stats = _merge.update(repo, node, False, True, None)
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343 if show_stats: _showstats(repo, stats)
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344 return stats[3] > 0
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345
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346 def merge(repo, node, force=None, remind=True):
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347 """branch merge with node, resolving changes"""
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348 stats = _merge.update(repo, node, True, force, False)
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349 _showstats(repo, stats)
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350 if stats[3]:
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351 repo.ui.status(_("use 'hg resolve' to retry unresolved file merges "
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352 "or 'hg up --clean' to abandon\n"))
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353 elif remind:
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354 repo.ui.status(_("(branch merge, don't forget to commit)\n"))
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355 return stats[3] > 0
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356
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357 def revert(repo, node, choose):
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358 """revert changes to revision in node without updating dirstate"""
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359 return _merge.update(repo, node, False, True, choose)[3] > 0
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360
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361 def verify(repo):
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362 """verify the consistency of a repository"""
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363 return _verify.verify(repo)
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