mirror of
https://gerrit.googlesource.com/git-repo
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cc6c79643e
I plan to have the new submodule manifest format use a different layout for the m refs than the XML manifest format has used in the past. Thus we need to move the behavior management into the manifest object, and out of the project, so we can change it. Signed-off-by: Shawn O. Pearce <sop@google.com>
399 lines
12 KiB
Python
399 lines
12 KiB
Python
#
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# Copyright (C) 2008 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import sys
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import xml.dom.minidom
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from git_config import GitConfig
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from git_config import IsId
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from manifest import Manifest
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from project import RemoteSpec
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from project import Project
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from project import MetaProject
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from project import R_HEADS
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from project import HEAD
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from error import ManifestParseError
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MANIFEST_FILE_NAME = 'manifest.xml'
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LOCAL_MANIFEST_NAME = 'local_manifest.xml'
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R_M = 'refs/remotes/m/'
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class _Default(object):
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"""Project defaults within the manifest."""
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revisionExpr = None
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remote = None
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class _XmlRemote(object):
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def __init__(self,
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name,
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fetch=None,
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review=None):
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self.name = name
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self.fetchUrl = fetch
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self.reviewUrl = review
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def ToRemoteSpec(self, projectName):
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url = self.fetchUrl
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while url.endswith('/'):
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url = url[:-1]
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url += '/%s.git' % projectName
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return RemoteSpec(self.name, url, self.reviewUrl)
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class XmlManifest(Manifest):
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"""manages the repo configuration file"""
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def __init__(self, repodir):
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Manifest.__init__(self, repodir)
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self._manifestFile = os.path.join(repodir, MANIFEST_FILE_NAME)
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self.manifestProject = MetaProject(self, 'manifests',
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gitdir = os.path.join(repodir, 'manifests.git'),
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worktree = os.path.join(repodir, 'manifests'))
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self._Unload()
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def Link(self, name):
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"""Update the repo metadata to use a different manifest.
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"""
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path = os.path.join(self.manifestProject.worktree, name)
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if not os.path.isfile(path):
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raise ManifestParseError('manifest %s not found' % name)
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old = self._manifestFile
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try:
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self._manifestFile = path
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self._Unload()
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self._Load()
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finally:
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self._manifestFile = old
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try:
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if os.path.exists(self._manifestFile):
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os.remove(self._manifestFile)
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os.symlink('manifests/%s' % name, self._manifestFile)
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except OSError, e:
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raise ManifestParseError('cannot link manifest %s' % name)
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def _RemoteToXml(self, r, doc, root):
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e = doc.createElement('remote')
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root.appendChild(e)
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e.setAttribute('name', r.name)
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e.setAttribute('fetch', r.fetchUrl)
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if r.reviewUrl is not None:
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e.setAttribute('review', r.reviewUrl)
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def Save(self, fd, peg_rev=False):
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"""Write the current manifest out to the given file descriptor.
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"""
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doc = xml.dom.minidom.Document()
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root = doc.createElement('manifest')
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doc.appendChild(root)
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d = self.default
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sort_remotes = list(self.remotes.keys())
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sort_remotes.sort()
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for r in sort_remotes:
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self._RemoteToXml(self.remotes[r], doc, root)
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if self.remotes:
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root.appendChild(doc.createTextNode(''))
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have_default = False
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e = doc.createElement('default')
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if d.remote:
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have_default = True
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e.setAttribute('remote', d.remote.name)
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if d.revisionExpr:
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have_default = True
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e.setAttribute('revision', d.revisionExpr)
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if have_default:
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root.appendChild(e)
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root.appendChild(doc.createTextNode(''))
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sort_projects = list(self.projects.keys())
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sort_projects.sort()
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for p in sort_projects:
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p = self.projects[p]
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e = doc.createElement('project')
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root.appendChild(e)
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e.setAttribute('name', p.name)
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if p.relpath != p.name:
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e.setAttribute('path', p.relpath)
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if not d.remote or p.remote.name != d.remote.name:
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e.setAttribute('remote', p.remote.name)
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if peg_rev:
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if self.IsMirror:
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e.setAttribute('revision',
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p.bare_git.rev_parse(p.revisionExpr + '^0'))
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else:
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e.setAttribute('revision',
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p.work_git.rev_parse(HEAD + '^0'))
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elif not d.revisionExpr or p.revisionExpr != d.revisionExpr:
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e.setAttribute('revision', p.revisionExpr)
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for c in p.copyfiles:
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ce = doc.createElement('copyfile')
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ce.setAttribute('src', c.src)
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ce.setAttribute('dest', c.dest)
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e.appendChild(ce)
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doc.writexml(fd, '', ' ', '\n', 'UTF-8')
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@property
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def projects(self):
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self._Load()
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return self._projects
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@property
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def remotes(self):
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self._Load()
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return self._remotes
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@property
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def default(self):
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self._Load()
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return self._default
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def SetMRefs(self, project):
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if self.branch:
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project._InitAnyMRef(R_M + self.branch)
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def _Unload(self):
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self._loaded = False
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self._projects = {}
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self._remotes = {}
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self._default = None
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self.branch = None
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def _Load(self):
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if not self._loaded:
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m = self.manifestProject
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b = m.GetBranch(m.CurrentBranch).merge
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if b is not None and b.startswith(R_HEADS):
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b = b[len(R_HEADS):]
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self.branch = b
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self._ParseManifest(True)
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local = os.path.join(self.repodir, LOCAL_MANIFEST_NAME)
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if os.path.exists(local):
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try:
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real = self._manifestFile
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self._manifestFile = local
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self._ParseManifest(False)
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finally:
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self._manifestFile = real
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if self.IsMirror:
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self._AddMetaProjectMirror(self.repoProject)
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self._AddMetaProjectMirror(self.manifestProject)
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self._loaded = True
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def _ParseManifest(self, is_root_file):
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root = xml.dom.minidom.parse(self._manifestFile)
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if not root or not root.childNodes:
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raise ManifestParseError, \
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"no root node in %s" % \
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self._manifestFile
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config = root.childNodes[0]
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if config.nodeName != 'manifest':
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raise ManifestParseError, \
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"no <manifest> in %s" % \
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self._manifestFile
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for node in config.childNodes:
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if node.nodeName == 'remove-project':
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name = self._reqatt(node, 'name')
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try:
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del self._projects[name]
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except KeyError:
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raise ManifestParseError, \
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'project %s not found' % \
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(name)
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for node in config.childNodes:
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if node.nodeName == 'remote':
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remote = self._ParseRemote(node)
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if self._remotes.get(remote.name):
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raise ManifestParseError, \
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'duplicate remote %s in %s' % \
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(remote.name, self._manifestFile)
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self._remotes[remote.name] = remote
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for node in config.childNodes:
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if node.nodeName == 'default':
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if self._default is not None:
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raise ManifestParseError, \
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'duplicate default in %s' % \
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(self._manifestFile)
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self._default = self._ParseDefault(node)
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if self._default is None:
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self._default = _Default()
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for node in config.childNodes:
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if node.nodeName == 'project':
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project = self._ParseProject(node)
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if self._projects.get(project.name):
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raise ManifestParseError, \
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'duplicate project %s in %s' % \
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(project.name, self._manifestFile)
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self._projects[project.name] = project
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def _AddMetaProjectMirror(self, m):
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name = None
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m_url = m.GetRemote(m.remote.name).url
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if m_url.endswith('/.git'):
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raise ManifestParseError, 'refusing to mirror %s' % m_url
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if self._default and self._default.remote:
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url = self._default.remote.fetchUrl
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if not url.endswith('/'):
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url += '/'
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if m_url.startswith(url):
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remote = self._default.remote
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name = m_url[len(url):]
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if name is None:
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s = m_url.rindex('/') + 1
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remote = _XmlRemote('origin', m_url[:s])
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name = m_url[s:]
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if name.endswith('.git'):
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name = name[:-4]
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if name not in self._projects:
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m.PreSync()
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gitdir = os.path.join(self.topdir, '%s.git' % name)
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project = Project(manifest = self,
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name = name,
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remote = remote.ToRemoteSpec(name),
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gitdir = gitdir,
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worktree = None,
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relpath = None,
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revisionExpr = m.revisionExpr,
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revisionId = None)
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self._projects[project.name] = project
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def _ParseRemote(self, node):
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"""
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reads a <remote> element from the manifest file
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"""
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name = self._reqatt(node, 'name')
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fetch = self._reqatt(node, 'fetch')
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review = node.getAttribute('review')
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if review == '':
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review = None
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return _XmlRemote(name, fetch, review)
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def _ParseDefault(self, node):
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"""
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reads a <default> element from the manifest file
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"""
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d = _Default()
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d.remote = self._get_remote(node)
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d.revisionExpr = node.getAttribute('revision')
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if d.revisionExpr == '':
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d.revisionExpr = None
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return d
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def _ParseProject(self, node):
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"""
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reads a <project> element from the manifest file
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"""
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name = self._reqatt(node, 'name')
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remote = self._get_remote(node)
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if remote is None:
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remote = self._default.remote
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if remote is None:
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raise ManifestParseError, \
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"no remote for project %s within %s" % \
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(name, self._manifestFile)
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revisionExpr = node.getAttribute('revision')
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if not revisionExpr:
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revisionExpr = self._default.revisionExpr
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if not revisionExpr:
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raise ManifestParseError, \
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"no revision for project %s within %s" % \
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(name, self._manifestFile)
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path = node.getAttribute('path')
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if not path:
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path = name
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if path.startswith('/'):
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raise ManifestParseError, \
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"project %s path cannot be absolute in %s" % \
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(name, self._manifestFile)
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if self.IsMirror:
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relpath = None
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worktree = None
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gitdir = os.path.join(self.topdir, '%s.git' % name)
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else:
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worktree = os.path.join(self.topdir, path)
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gitdir = os.path.join(self.repodir, 'projects/%s.git' % path)
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project = Project(manifest = self,
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name = name,
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remote = remote.ToRemoteSpec(name),
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gitdir = gitdir,
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worktree = worktree,
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relpath = path,
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revisionExpr = revisionExpr,
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revisionId = None)
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for n in node.childNodes:
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if n.nodeName == 'copyfile':
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self._ParseCopyFile(project, n)
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return project
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def _ParseCopyFile(self, project, node):
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src = self._reqatt(node, 'src')
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dest = self._reqatt(node, 'dest')
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if not self.IsMirror:
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# src is project relative;
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# dest is relative to the top of the tree
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project.AddCopyFile(src, dest, os.path.join(self.topdir, dest))
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def _get_remote(self, node):
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name = node.getAttribute('remote')
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if not name:
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return None
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v = self._remotes.get(name)
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if not v:
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raise ManifestParseError, \
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"remote %s not defined in %s" % \
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(name, self._manifestFile)
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return v
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def _reqatt(self, node, attname):
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"""
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reads a required attribute from the node.
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"""
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v = node.getAttribute(attname)
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if not v:
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raise ManifestParseError, \
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"no %s in <%s> within %s" % \
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(attname, node.nodeName, self._manifestFile)
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return v
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