author | Vadim Gelfer <vadim.gelfer@gmail.com> |
Mon, 07 Aug 2006 17:22:17 -0700 | |
changeset 2793 | 2d60c682a081 |
parent 2768 | b1b1aa6f275c |
child 2798 | 8cd3e19bf4a5 |
permissions | -rw-r--r-- |
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# hg.py - repository classes for mercurial |
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# |
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# Copyright 2005 Matt Mackall <mpm@selenic.com> |
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# |
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# This software may be used and distributed according to the terms |
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# of the GNU General Public License, incorporated herein by reference. |
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from node import * |
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from repo import * |
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from demandload import * |
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from i18n import gettext as _ |
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demandload(globals(), "localrepo bundlerepo httprepo sshrepo statichttprepo") |
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demandload(globals(), "errno lock os shutil util") |
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def _local(path): |
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return (os.path.isfile(path and util.drop_scheme('file', path)) and |
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bundlerepo or localrepo) |
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schemes = { |
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'bundle': bundlerepo, |
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'file': _local, |
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'hg': httprepo, |
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'http': httprepo, |
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'https': httprepo, |
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'old-http': statichttprepo, |
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'ssh': sshrepo, |
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'static-http': statichttprepo, |
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} |
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def _lookup(path): |
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scheme = 'file' |
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if path: |
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c = path.find(':') |
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if c > 0: |
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scheme = path[:c] |
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thing = schemes.get(scheme) or schemes['file'] |
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try: |
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return thing(path) |
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except TypeError: |
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return thing |
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def islocal(repo): |
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'''return true if repo or path is local''' |
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if isinstance(repo, str): |
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try: |
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return _lookup(repo).islocal(repo) |
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except AttributeError: |
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return False |
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return repo.local() |
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def repository(ui, path=None, create=False): |
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return _lookup(path).instance(ui, path, create) |
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def defaultdest(source): |
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'''return default destination of clone if none is given''' |
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return os.path.basename(os.path.normpath(source)) |
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def clone(ui, source, dest=None, pull=False, rev=None, update=True, |
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stream=False): |
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"""Make a copy of an existing repository. |
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Create a copy of an existing repository in a new directory. The |
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source and destination are URLs, as passed to the repository |
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function. Returns a pair of repository objects, the source and |
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newly created destination. |
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The location of the source is added to the new repository's |
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.hg/hgrc file, as the default to be used for future pulls and |
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pushes. |
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If an exception is raised, the partly cloned/updated destination |
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repository will be deleted. |
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Arguments: |
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source: repository object or URL |
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dest: URL of destination repository to create (defaults to base |
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name of source repository) |
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pull: always pull from source repository, even in local case |
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stream: stream raw data uncompressed from repository (fast over |
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LAN, slow over WAN) |
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rev: revision to clone up to (implies pull=True) |
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update: update working directory after clone completes, if |
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destination is local repository |
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""" |
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if isinstance(source, str): |
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src_repo = repository(ui, source) |
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else: |
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src_repo = source |
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source = src_repo.url() |
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if dest is None: |
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dest = defaultdest(source) |
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def localpath(path): |
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if path.startswith('file://'): |
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return path[7:] |
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if path.startswith('file:'): |
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return path[5:] |
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return path |
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107 |
dest = localpath(dest) |
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108 |
source = localpath(source) |
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109 |
|
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110 |
if os.path.exists(dest): |
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111 |
raise util.Abort(_("destination '%s' already exists"), dest) |
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112 |
|
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113 |
class DirCleanup(object): |
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114 |
def __init__(self, dir_): |
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self.rmtree = shutil.rmtree |
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116 |
self.dir_ = dir_ |
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117 |
def close(self): |
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118 |
self.dir_ = None |
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119 |
def __del__(self): |
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120 |
if self.dir_: |
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121 |
self.rmtree(self.dir_, True) |
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122 |
|
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123 |
dest_repo = None |
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124 |
try: |
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125 |
dest_repo = repository(ui, dest) |
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126 |
raise util.Abort(_("destination '%s' already exists." % dest)) |
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127 |
except RepoError: |
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128 |
dest_repo = repository(ui, dest, create=True) |
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129 |
|
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130 |
dest_path = None |
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131 |
dir_cleanup = None |
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132 |
if dest_repo.local(): |
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133 |
dest_path = os.path.realpath(dest_repo.root) |
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134 |
dir_cleanup = DirCleanup(dest_path) |
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135 |
|
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136 |
abspath = source |
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137 |
copy = False |
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138 |
if src_repo.local() and dest_repo.local(): |
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139 |
abspath = os.path.abspath(source) |
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140 |
copy = not pull and not rev |
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141 |
|
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142 |
src_lock, dest_lock = None, None |
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143 |
if copy: |
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144 |
try: |
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145 |
# we use a lock here because if we race with commit, we |
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146 |
# can end up with extra data in the cloned revlogs that's |
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147 |
# not pointed to by changesets, thus causing verify to |
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148 |
# fail |
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149 |
src_lock = src_repo.lock() |
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150 |
except lock.LockException: |
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151 |
copy = False |
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152 |
|
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153 |
if copy: |
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154 |
# we lock here to avoid premature writing to the target |
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155 |
dest_lock = lock.lock(os.path.join(dest_path, ".hg", "lock")) |
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156 |
|
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157 |
# we need to remove the (empty) data dir in dest so copyfiles |
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158 |
# can do its work |
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159 |
os.rmdir(os.path.join(dest_path, ".hg", "data")) |
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160 |
files = "data 00manifest.d 00manifest.i 00changelog.d 00changelog.i" |
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161 |
for f in files.split(): |
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162 |
src = os.path.join(source, ".hg", f) |
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163 |
dst = os.path.join(dest_path, ".hg", f) |
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164 |
try: |
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165 |
util.copyfiles(src, dst) |
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166 |
except OSError, inst: |
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167 |
if inst.errno != errno.ENOENT: |
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168 |
raise |
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169 |
|
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170 |
# we need to re-init the repo after manually copying the data |
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171 |
# into it |
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172 |
dest_repo = repository(ui, dest) |
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173 |
|
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174 |
else: |
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175 |
revs = None |
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176 |
if rev: |
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177 |
if not src_repo.local(): |
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178 |
raise util.Abort(_("clone by revision not supported yet " |
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179 |
"for remote repositories")) |
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180 |
revs = [src_repo.lookup(r) for r in rev] |
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181 |
|
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182 |
if dest_repo.local(): |
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183 |
dest_repo.clone(src_repo, heads=revs, stream=stream) |
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184 |
elif src_repo.local(): |
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185 |
src_repo.push(dest_repo, revs=revs) |
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186 |
else: |
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187 |
raise util.Abort(_("clone from remote to remote not supported")) |
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188 |
|
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189 |
if src_lock: |
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190 |
src_lock.release() |
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191 |
|
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192 |
if dest_repo.local(): |
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193 |
fp = dest_repo.opener("hgrc", "w", text=True) |
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194 |
fp.write("[paths]\n") |
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195 |
fp.write("default = %s\n" % abspath) |
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196 |
fp.close() |
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197 |
|
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198 |
if dest_lock: |
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199 |
dest_lock.release() |
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200 |
|
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201 |
if update: |
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202 |
dest_repo.update(dest_repo.changelog.tip()) |
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203 |
if dir_cleanup: |
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204 |
dir_cleanup.close() |
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205 |
|
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206 |
return src_repo, dest_repo |