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  • test default
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ramdump.py

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  • manifest_xml.py 37.33 KiB
    # -*- coding:utf-8 -*-
    #
    # Copyright (C) 2008 The Android Open Source Project
    #
    # Licensed under the Apache License, Version 2.0 (the "License");
    # you may not use this file except in compliance with the License.
    # You may obtain a copy of the License at
    #
    #      http://www.apache.org/licenses/LICENSE-2.0
    #
    # Unless required by applicable law or agreed to in writing, software
    # distributed under the License is distributed on an "AS IS" BASIS,
    # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    # See the License for the specific language governing permissions and
    # limitations under the License.
    
    from __future__ import print_function
    import itertools
    import os
    import re
    import sys
    import xml.dom.minidom
    
    from pyversion import is_python3
    if is_python3():
      import urllib.parse
    else:
      import imp
      import urlparse
      urllib = imp.new_module('urllib')
      urllib.parse = urlparse
    
    import gitc_utils
    from git_config import GitConfig
    from git_refs import R_HEADS, HEAD
    import platform_utils
    from project import RemoteSpec, Project, MetaProject
    from error import (ManifestParseError, ManifestInvalidPathError,
                       ManifestInvalidRevisionError)
    
    MANIFEST_FILE_NAME = 'manifest.xml'
    LOCAL_MANIFEST_NAME = 'local_manifest.xml'
    LOCAL_MANIFESTS_DIR_NAME = 'local_manifests'
    
    # urljoin gets confused if the scheme is not known.
    urllib.parse.uses_relative.extend([
        'ssh',
        'git',
        'persistent-https',
        'sso',
        'rpc'])
    urllib.parse.uses_netloc.extend([
        'ssh',
        'git',
        'persistent-https',
        'sso',
        'rpc'])
    
    class _Default(object):
      """Project defaults within the manifest."""
    
      revisionExpr = None
      destBranchExpr = None
      upstreamExpr = None
      remote = None
      sync_j = 1
      sync_c = False
      sync_s = False
      sync_tags = True
    
      def __eq__(self, other):
        return self.__dict__ == other.__dict__
    
      def __ne__(self, other):
        return self.__dict__ != other.__dict__
    
    class _XmlRemote(object):
      def __init__(self,
                   name,
                   alias=None,
                   fetch=None,
                   pushUrl=None,
                   manifestUrl=None,
                   review=None,
                   revision=None):
        self.name = name
        self.fetchUrl = fetch
        self.pushUrl = pushUrl
        self.manifestUrl = manifestUrl
        self.remoteAlias = alias
        self.reviewUrl = review
        self.revision = revision
        self.resolvedFetchUrl = self._resolveFetchUrl()
    
      def __eq__(self, other):
        return self.__dict__ == other.__dict__
    
      def __ne__(self, other):
        return self.__dict__ != other.__dict__
    
      def _resolveFetchUrl(self):
        url = self.fetchUrl.rstrip('/')
        manifestUrl = self.manifestUrl.rstrip('/')
        # urljoin will gets confused over quite a few things.  The ones we care
        # about here are:
        # * no scheme in the base url, like <hostname:port>
        # We handle no scheme by replacing it with an obscure protocol, gopher
        # and then replacing it with the original when we are done.
    
        if manifestUrl.find(':') != manifestUrl.find('/') - 1:
          url = urllib.parse.urljoin('gopher://' + manifestUrl, url)
          url = re.sub(r'^gopher://', '', url)
        else:
          url = urllib.parse.urljoin(manifestUrl, url)
        return url
    
      def ToRemoteSpec(self, projectName):
        fetchUrl = self.resolvedFetchUrl.rstrip('/')
        url = fetchUrl + '/' + projectName
        remoteName = self.name
        if self.remoteAlias:
          remoteName = self.remoteAlias
        return RemoteSpec(remoteName,
                          url=url,
                          pushUrl=self.pushUrl,
                          review=self.reviewUrl,
                          orig_name=self.name,
                          fetchUrl=self.fetchUrl)
    
    class XmlManifest(object):
      """manages the repo configuration file"""
    
      def __init__(self, repodir):
        self.repodir = os.path.abspath(repodir)
        self.topdir = os.path.dirname(self.repodir)
        self.manifestFile = os.path.join(self.repodir, MANIFEST_FILE_NAME)
        self.globalConfig = GitConfig.ForUser()
        self.localManifestWarning = False
        self.isGitcClient = False
        self._load_local_manifests = True
    
        self.repoProject = MetaProject(self, 'repo',
          gitdir   = os.path.join(repodir, 'repo/.git'),
          worktree = os.path.join(repodir, 'repo'))
    
        self.manifestProject = MetaProject(self, 'manifests',
          gitdir   = os.path.join(repodir, 'manifests.git'),
          worktree = os.path.join(repodir, 'manifests'))
    
        self._Unload()
    
      def Override(self, name, load_local_manifests=True):
        """Use a different manifest, just for the current instantiation.
        """
        path = None
    
        # Look for a manifest by path in the filesystem (including the cwd).
        if not load_local_manifests:
          local_path = os.path.abspath(name)
          if os.path.isfile(local_path):
            path = local_path
    
        # Look for manifests by name from the manifests repo.
        if path is None:
          path = os.path.join(self.manifestProject.worktree, name)
          if not os.path.isfile(path):
            raise ManifestParseError('manifest %s not found' % name)
    
        old = self.manifestFile
        try:
          self._load_local_manifests = load_local_manifests
          self.manifestFile = path
          self._Unload()
          self._Load()
        finally:
          self.manifestFile = old
    
      def Link(self, name):
        """Update the repo metadata to use a different manifest.
        """
        self.Override(name)
    
        try:
          if os.path.lexists(self.manifestFile):
            platform_utils.remove(self.manifestFile)
          platform_utils.symlink(os.path.join('manifests', name), self.manifestFile)
        except OSError as e:
          raise ManifestParseError('cannot link manifest %s: %s' % (name, str(e)))
    
      def _RemoteToXml(self, r, doc, root):
        e = doc.createElement('remote')
        root.appendChild(e)
        e.setAttribute('name', r.name)
        e.setAttribute('fetch', r.fetchUrl)
        if r.pushUrl is not None:
          e.setAttribute('pushurl', r.pushUrl)
        if r.remoteAlias is not None:
          e.setAttribute('alias', r.remoteAlias)
        if r.reviewUrl is not None:
          e.setAttribute('review', r.reviewUrl)
        if r.revision is not None:
          e.setAttribute('revision', r.revision)
    
      def _ParseGroups(self, groups):
        return [x for x in re.split(r'[,\s]+', groups) if x]
    
      def Save(self, fd, peg_rev=False, peg_rev_upstream=True, groups=None):
        """Write the current manifest out to the given file descriptor.
        """
        mp = self.manifestProject
    
        if groups is None:
          groups = mp.config.GetString('manifest.groups')
        if groups:
          groups = self._ParseGroups(groups)
    
        doc = xml.dom.minidom.Document()
        root = doc.createElement('manifest')
        doc.appendChild(root)
    
        # Save out the notice.  There's a little bit of work here to give it the
        # right whitespace, which assumes that the notice is automatically indented
        # by 4 by minidom.
        if self.notice:
          notice_element = root.appendChild(doc.createElement('notice'))
          notice_lines = self.notice.splitlines()
          indented_notice = ('\n'.join(" "*4 + line for line in notice_lines))[4:]
          notice_element.appendChild(doc.createTextNode(indented_notice))
    
        d = self.default
    
        for r in sorted(self.remotes):
          self._RemoteToXml(self.remotes[r], doc, root)
        if self.remotes:
          root.appendChild(doc.createTextNode(''))
    
        have_default = False
        e = doc.createElement('default')
        if d.remote:
          have_default = True
          e.setAttribute('remote', d.remote.name)
        if d.revisionExpr:
          have_default = True
          e.setAttribute('revision', d.revisionExpr)
        if d.destBranchExpr:
          have_default = True
          e.setAttribute('dest-branch', d.destBranchExpr)
        if d.upstreamExpr:
          have_default = True
          e.setAttribute('upstream', d.upstreamExpr)
        if d.sync_j > 1:
          have_default = True
          e.setAttribute('sync-j', '%d' % d.sync_j)
        if d.sync_c:
          have_default = True
          e.setAttribute('sync-c', 'true')
        if d.sync_s:
          have_default = True
          e.setAttribute('sync-s', 'true')
        if not d.sync_tags:
          have_default = True
          e.setAttribute('sync-tags', 'false')
        if have_default:
          root.appendChild(e)
          root.appendChild(doc.createTextNode(''))
    
        if self._manifest_server:
          e = doc.createElement('manifest-server')
          e.setAttribute('url', self._manifest_server)
          root.appendChild(e)
          root.appendChild(doc.createTextNode(''))
    
        def output_projects(parent, parent_node, projects):
          for project_name in projects:
            for project in self._projects[project_name]:
              output_project(parent, parent_node, project)
    
        def output_project(parent, parent_node, p):
          if not p.MatchesGroups(groups):
            return
    
          name = p.name
          relpath = p.relpath
          if parent:
            name = self._UnjoinName(parent.name, name)
            relpath = self._UnjoinRelpath(parent.relpath, relpath)
    
          e = doc.createElement('project')
          parent_node.appendChild(e)
          e.setAttribute('name', name)
          if relpath != name:
            e.setAttribute('path', relpath)
          remoteName = None
          if d.remote:
            remoteName = d.remote.name
          if not d.remote or p.remote.orig_name != remoteName:
            remoteName = p.remote.orig_name
            e.setAttribute('remote', remoteName)
          if peg_rev:
            if self.IsMirror:
              value = p.bare_git.rev_parse(p.revisionExpr + '^0')
            else:
              value = p.work_git.rev_parse(HEAD + '^0')
            e.setAttribute('revision', value)
            if peg_rev_upstream:
              if p.upstream:
                e.setAttribute('upstream', p.upstream)
              elif value != p.revisionExpr:
                # Only save the origin if the origin is not a sha1, and the default
                # isn't our value
                e.setAttribute('upstream', p.revisionExpr)
          else:
            revision = self.remotes[p.remote.orig_name].revision or d.revisionExpr
            if not revision or revision != p.revisionExpr:
              e.setAttribute('revision', p.revisionExpr)
            if (p.upstream and (p.upstream != p.revisionExpr or
                                p.upstream != d.upstreamExpr)):
              e.setAttribute('upstream', p.upstream)
    
          if p.dest_branch and p.dest_branch != d.destBranchExpr:
            e.setAttribute('dest-branch', p.dest_branch)
    
          for c in p.copyfiles:
            ce = doc.createElement('copyfile')
            ce.setAttribute('src', c.src)
            ce.setAttribute('dest', c.dest)
            e.appendChild(ce)
    
          for l in p.linkfiles:
            le = doc.createElement('linkfile')
            le.setAttribute('src', l.src)
            le.setAttribute('dest', l.dest)
            e.appendChild(le)
    
          default_groups = ['all', 'name:%s' % p.name, 'path:%s' % p.relpath]
          egroups = [g for g in p.groups if g not in default_groups]
          if egroups:
            e.setAttribute('groups', ','.join(egroups))
    
          for a in p.annotations:
            if a.keep == "true":
              ae = doc.createElement('annotation')
              ae.setAttribute('name', a.name)
              ae.setAttribute('value', a.value)
              e.appendChild(ae)
    
          if p.sync_c:
            e.setAttribute('sync-c', 'true')
    
          if p.sync_s:
            e.setAttribute('sync-s', 'true')
    
          if not p.sync_tags:
            e.setAttribute('sync-tags', 'false')
    
          if p.clone_depth:
            e.setAttribute('clone-depth', str(p.clone_depth))
    
          self._output_manifest_project_extras(p, e)
    
          if p.subprojects:
            subprojects = set(subp.name for subp in p.subprojects)
            output_projects(p, e, list(sorted(subprojects)))
    
        projects = set(p.name for p in self._paths.values() if not p.parent)
        output_projects(None, root, list(sorted(projects)))
    
        if self._repo_hooks_project:
          root.appendChild(doc.createTextNode(''))
          e = doc.createElement('repo-hooks')
          e.setAttribute('in-project', self._repo_hooks_project.name)
          e.setAttribute('enabled-list',
                         ' '.join(self._repo_hooks_project.enabled_repo_hooks))
          root.appendChild(e)
    
        doc.writexml(fd, '', '  ', '\n', 'UTF-8')
    
      def _output_manifest_project_extras(self, p, e):
        """Manifests can modify e if they support extra project attributes."""
        pass
    
      @property
      def paths(self):
        self._Load()
        return self._paths
    
      @property
      def projects(self):
        self._Load()
        return list(self._paths.values())
    
      @property
      def remotes(self):
        self._Load()
        return self._remotes
    
      @property
      def default(self):
        self._Load()
        return self._default
    
      @property
      def repo_hooks_project(self):
        self._Load()
        return self._repo_hooks_project
    
      @property
      def notice(self):
        self._Load()
        return self._notice
    
      @property
      def manifest_server(self):
        self._Load()
        return self._manifest_server
    
      @property
      def CloneFilter(self):
        if self.manifestProject.config.GetBoolean('repo.partialclone'):
          return self.manifestProject.config.GetString('repo.clonefilter')
        return None
    
      @property
      def IsMirror(self):
        return self.manifestProject.config.GetBoolean('repo.mirror')
    
      @property
      def IsArchive(self):
        return self.manifestProject.config.GetBoolean('repo.archive')
    
      @property
      def HasSubmodules(self):
        return self.manifestProject.config.GetBoolean('repo.submodules')
    
      def _Unload(self):
        self._loaded = False
        self._projects = {}
        self._paths = {}
        self._remotes = {}
        self._default = None
        self._repo_hooks_project = None
        self._notice = None
        self.branch = None
        self._manifest_server = None
    
      def _Load(self):
        if not self._loaded:
          m = self.manifestProject
          b = m.GetBranch(m.CurrentBranch).merge
          if b is not None and b.startswith(R_HEADS):
            b = b[len(R_HEADS):]
          self.branch = b
    
          nodes = []
          nodes.append(self._ParseManifestXml(self.manifestFile,
                                              self.manifestProject.worktree))
    
          if self._load_local_manifests:
            local = os.path.join(self.repodir, LOCAL_MANIFEST_NAME)
            if os.path.exists(local):
              if not self.localManifestWarning:
                self.localManifestWarning = True
                print('warning: %s is deprecated; put local manifests '
                      'in `%s` instead' % (LOCAL_MANIFEST_NAME,
                      os.path.join(self.repodir, LOCAL_MANIFESTS_DIR_NAME)),
                      file=sys.stderr)
              nodes.append(self._ParseManifestXml(local, self.repodir))
    
            local_dir = os.path.abspath(os.path.join(self.repodir,
                                        LOCAL_MANIFESTS_DIR_NAME))
            try:
              for local_file in sorted(platform_utils.listdir(local_dir)):
                if local_file.endswith('.xml'):
                  local = os.path.join(local_dir, local_file)
                  nodes.append(self._ParseManifestXml(local, self.repodir))
            except OSError:
              pass
    
          try:
            self._ParseManifest(nodes)
          except ManifestParseError as e:
            # There was a problem parsing, unload ourselves in case they catch
            # this error and try again later, we will show the correct error
            self._Unload()
            raise e
    
          if self.IsMirror:
            self._AddMetaProjectMirror(self.repoProject)
            self._AddMetaProjectMirror(self.manifestProject)
    
          self._loaded = True
    
      def _ParseManifestXml(self, path, include_root):
        try:
          root = xml.dom.minidom.parse(path)
        except (OSError, xml.parsers.expat.ExpatError) as e:
          raise ManifestParseError("error parsing manifest %s: %s" % (path, e))
    
        if not root or not root.childNodes:
          raise ManifestParseError("no root node in %s" % (path,))
    
        for manifest in root.childNodes:
          if manifest.nodeName == 'manifest':
            break
        else:
          raise ManifestParseError("no <manifest> in %s" % (path,))
    
        nodes = []
        for node in manifest.childNodes:
          if node.nodeName == 'include':
            name = self._reqatt(node, 'name')
            fp = os.path.join(include_root, name)
            if not os.path.isfile(fp):
              raise ManifestParseError("include %s doesn't exist or isn't a file"
                  % (name,))
            try:
              nodes.extend(self._ParseManifestXml(fp, include_root))
            # should isolate this to the exact exception, but that's
            # tricky.  actual parsing implementation may vary.
            except (KeyboardInterrupt, RuntimeError, SystemExit):
              raise
            except Exception as e:
              raise ManifestParseError(
                  "failed parsing included manifest %s: %s" % (name, e))
          else:
            nodes.append(node)
        return nodes
    
      def _ParseManifest(self, node_list):
        for node in itertools.chain(*node_list):
          if node.nodeName == 'remote':
            remote = self._ParseRemote(node)
            if remote:
              if remote.name in self._remotes:
                if remote != self._remotes[remote.name]:
                  raise ManifestParseError(
                      'remote %s already exists with different attributes' %
                      (remote.name))
              else:
                self._remotes[remote.name] = remote
    
        for node in itertools.chain(*node_list):
          if node.nodeName == 'default':
            new_default = self._ParseDefault(node)
            if self._default is None:
              self._default = new_default
            elif new_default != self._default:
              raise ManifestParseError('duplicate default in %s' %
                                       (self.manifestFile))
    
        if self._default is None:
          self._default = _Default()
    
        for node in itertools.chain(*node_list):
          if node.nodeName == 'notice':
            if self._notice is not None:
              raise ManifestParseError(
                  'duplicate notice in %s' %
                  (self.manifestFile))
            self._notice = self._ParseNotice(node)
    
        for node in itertools.chain(*node_list):
          if node.nodeName == 'manifest-server':
            url = self._reqatt(node, 'url')
            if self._manifest_server is not None:
              raise ManifestParseError(
                  'duplicate manifest-server in %s' %
                  (self.manifestFile))
            self._manifest_server = url
    
        def recursively_add_projects(project):
          projects = self._projects.setdefault(project.name, [])
          if project.relpath is None:
            raise ManifestParseError(
                'missing path for %s in %s' %
                (project.name, self.manifestFile))
          if project.relpath in self._paths:
            raise ManifestParseError(
                'duplicate path %s in %s' %
                (project.relpath, self.manifestFile))
          self._paths[project.relpath] = project
          projects.append(project)
          for subproject in project.subprojects:
            recursively_add_projects(subproject)
    
        for node in itertools.chain(*node_list):
          if node.nodeName == 'project':
            project = self._ParseProject(node)
            recursively_add_projects(project)
          if node.nodeName == 'extend-project':
            name = self._reqatt(node, 'name')
    
            if name not in self._projects:
              raise ManifestParseError('extend-project element specifies non-existent '
                                       'project: %s' % name)
    
            path = node.getAttribute('path')
            groups = node.getAttribute('groups')
            if groups:
              groups = self._ParseGroups(groups)
            revision = node.getAttribute('revision')
            remote = node.getAttribute('remote')
            if remote:
              remote = self._get_remote(node)
    
            for p in self._projects[name]:
              if path and p.relpath != path:
                continue
              if groups:
                p.groups.extend(groups)
              if revision:
                p.revisionExpr = revision
              if remote:
                p.remote = remote.ToRemoteSpec(name)
          if node.nodeName == 'repo-hooks':
            # Get the name of the project and the (space-separated) list of enabled.
            repo_hooks_project = self._reqatt(node, 'in-project')
            enabled_repo_hooks = self._reqatt(node, 'enabled-list').split()
    
            # Only one project can be the hooks project
            if self._repo_hooks_project is not None:
              raise ManifestParseError(
                  'duplicate repo-hooks in %s' %
                  (self.manifestFile))
    
            # Store a reference to the Project.
            try:
              repo_hooks_projects = self._projects[repo_hooks_project]
            except KeyError:
              raise ManifestParseError(
                  'project %s not found for repo-hooks' %
                  (repo_hooks_project))
    
            if len(repo_hooks_projects) != 1:
              raise ManifestParseError(
                  'internal error parsing repo-hooks in %s' %
                  (self.manifestFile))
            self._repo_hooks_project = repo_hooks_projects[0]
    
            # Store the enabled hooks in the Project object.
            self._repo_hooks_project.enabled_repo_hooks = enabled_repo_hooks
          if node.nodeName == 'remove-project':
            name = self._reqatt(node, 'name')
    
            if name not in self._projects:
              raise ManifestParseError('remove-project element specifies non-existent '
                                       'project: %s' % name)
    
            for p in self._projects[name]:
              del self._paths[p.relpath]
            del self._projects[name]
    
            # If the manifest removes the hooks project, treat it as if it deleted
            # the repo-hooks element too.
            if self._repo_hooks_project and (self._repo_hooks_project.name == name):
              self._repo_hooks_project = None
    
    
      def _AddMetaProjectMirror(self, m):
        name = None
        m_url = m.GetRemote(m.remote.name).url
        if m_url.endswith('/.git'):
          raise ManifestParseError('refusing to mirror %s' % m_url)
    
        if self._default and self._default.remote:
          url = self._default.remote.resolvedFetchUrl
          if not url.endswith('/'):
            url += '/'
          if m_url.startswith(url):
            remote = self._default.remote
            name = m_url[len(url):]
    
        if name is None:
          s = m_url.rindex('/') + 1
          manifestUrl = self.manifestProject.config.GetString('remote.origin.url')
          remote = _XmlRemote('origin', fetch=m_url[:s], manifestUrl=manifestUrl)
          name = m_url[s:]
    
        if name.endswith('.git'):
          name = name[:-4]
    
        if name not in self._projects:
          m.PreSync()
          gitdir = os.path.join(self.topdir, '%s.git' % name)
          project = Project(manifest = self,
                            name = name,
                            remote = remote.ToRemoteSpec(name),
                            gitdir = gitdir,
                            objdir = gitdir,
                            worktree = None,
                            relpath = name or None,
                            revisionExpr = m.revisionExpr,
                            revisionId = None)
          self._projects[project.name] = [project]
          self._paths[project.relpath] = project
    
      def _ParseRemote(self, node):
        """
        reads a <remote> element from the manifest file
        """
        name = self._reqatt(node, 'name')
        alias = node.getAttribute('alias')
        if alias == '':
          alias = None
        fetch = self._reqatt(node, 'fetch')
        pushUrl = node.getAttribute('pushurl')
        if pushUrl == '':
          pushUrl = None
        review = node.getAttribute('review')
        if review == '':
          review = None
        revision = node.getAttribute('revision')
        if revision == '':
          revision = None
        manifestUrl = self.manifestProject.config.GetString('remote.origin.url')
        return _XmlRemote(name, alias, fetch, pushUrl, manifestUrl, review, revision)
    
      def _ParseDefault(self, node):
        """
        reads a <default> element from the manifest file
        """
        d = _Default()
        d.remote = self._get_remote(node)
        d.revisionExpr = node.getAttribute('revision')
        if d.revisionExpr == '':
          d.revisionExpr = None
    
        d.destBranchExpr = node.getAttribute('dest-branch') or None
        d.upstreamExpr = node.getAttribute('upstream') or None
    
        sync_j = node.getAttribute('sync-j')
        if sync_j == '' or sync_j is None:
          d.sync_j = 1
        else:
          d.sync_j = int(sync_j)
    
        sync_c = node.getAttribute('sync-c')
        if not sync_c:
          d.sync_c = False
        else:
          d.sync_c = sync_c.lower() in ("yes", "true", "1")
    
        sync_s = node.getAttribute('sync-s')
        if not sync_s:
          d.sync_s = False
        else:
          d.sync_s = sync_s.lower() in ("yes", "true", "1")
    
        sync_tags = node.getAttribute('sync-tags')
        if not sync_tags:
          d.sync_tags = True
        else:
          d.sync_tags = sync_tags.lower() in ("yes", "true", "1")
        return d
    
      def _ParseNotice(self, node):
        """
        reads a <notice> element from the manifest file
    
        The <notice> element is distinct from other tags in the XML in that the
        data is conveyed between the start and end tag (it's not an empty-element
        tag).
    
        The white space (carriage returns, indentation) for the notice element is
        relevant and is parsed in a way that is based on how python docstrings work.
        In fact, the code is remarkably similar to here:
          http://www.python.org/dev/peps/pep-0257/
        """
        # Get the data out of the node...
        notice = node.childNodes[0].data
    
        # Figure out minimum indentation, skipping the first line (the same line
        # as the <notice> tag)...
        minIndent = sys.maxsize
        lines = notice.splitlines()
        for line in lines[1:]:
          lstrippedLine = line.lstrip()
          if lstrippedLine:
            indent = len(line) - len(lstrippedLine)
            minIndent = min(indent, minIndent)
    
        # Strip leading / trailing blank lines and also indentation.
        cleanLines = [lines[0].strip()]
        for line in lines[1:]:
          cleanLines.append(line[minIndent:].rstrip())
    
        # Clear completely blank lines from front and back...
        while cleanLines and not cleanLines[0]:
          del cleanLines[0]
        while cleanLines and not cleanLines[-1]:
          del cleanLines[-1]
    
        return '\n'.join(cleanLines)
    
      def _JoinName(self, parent_name, name):
        return os.path.join(parent_name, name)
    
      def _UnjoinName(self, parent_name, name):
        return os.path.relpath(name, parent_name)
    
      def _ParseProject(self, node, parent = None, **extra_proj_attrs):
        """
        reads a <project> element from the manifest file
        """
        name = self._reqatt(node, 'name')
        if parent:
          name = self._JoinName(parent.name, name)
    
        remote = self._get_remote(node)
        if remote is None:
          remote = self._default.remote
        if remote is None:
          raise ManifestParseError("no remote for project %s within %s" %
                (name, self.manifestFile))
    
        revisionExpr = node.getAttribute('revision') or remote.revision
        if not revisionExpr:
          revisionExpr = self._default.revisionExpr
        if not revisionExpr:
          raise ManifestParseError("no revision for project %s within %s" %
                (name, self.manifestFile))
    
        path = node.getAttribute('path')
        if not path:
          path = name
        if path.startswith('/'):
          raise ManifestParseError("project %s path cannot be absolute in %s" %
                (name, self.manifestFile))
    
        rebase = node.getAttribute('rebase')
        if not rebase:
          rebase = True
        else:
          rebase = rebase.lower() in ("yes", "true", "1")
    
        sync_c = node.getAttribute('sync-c')
        if not sync_c:
          sync_c = False
        else:
          sync_c = sync_c.lower() in ("yes", "true", "1")
    
        sync_s = node.getAttribute('sync-s')
        if not sync_s:
          sync_s = self._default.sync_s
        else:
          sync_s = sync_s.lower() in ("yes", "true", "1")
    
        sync_tags = node.getAttribute('sync-tags')
        if not sync_tags:
          sync_tags = self._default.sync_tags
        else:
          sync_tags = sync_tags.lower() in ("yes", "true", "1")
    
        clone_depth = node.getAttribute('clone-depth')
        if clone_depth:
          try:
            clone_depth = int(clone_depth)
            if  clone_depth <= 0:
              raise ValueError()
          except ValueError:
            raise ManifestParseError('invalid clone-depth %s in %s' %
                                     (clone_depth, self.manifestFile))
    
        dest_branch = node.getAttribute('dest-branch') or self._default.destBranchExpr
    
        upstream = node.getAttribute('upstream') or self._default.upstreamExpr
    
        groups = ''
        if node.hasAttribute('groups'):
          groups = node.getAttribute('groups')
        groups = self._ParseGroups(groups)
    
        if parent is None:
          relpath, worktree, gitdir, objdir = self.GetProjectPaths(name, path)
        else:
          relpath, worktree, gitdir, objdir = \
              self.GetSubprojectPaths(parent, name, path)
    
        default_groups = ['all', 'name:%s' % name, 'path:%s' % relpath]
        groups.extend(set(default_groups).difference(groups))
    
        if self.IsMirror and node.hasAttribute('force-path'):
          if node.getAttribute('force-path').lower() in ("yes", "true", "1"):
            gitdir = os.path.join(self.topdir, '%s.git' % path)
    
        project = Project(manifest = self,
                          name = name,
                          remote = remote.ToRemoteSpec(name),
                          gitdir = gitdir,
                          objdir = objdir,
                          worktree = worktree,
                          relpath = relpath,
                          revisionExpr = revisionExpr,
                          revisionId = None,
                          rebase = rebase,
                          groups = groups,
                          sync_c = sync_c,
                          sync_s = sync_s,
                          sync_tags = sync_tags,
                          clone_depth = clone_depth,
                          upstream = upstream,
                          parent = parent,
                          dest_branch = dest_branch,
                          **extra_proj_attrs)
    
        for n in node.childNodes:
          if n.nodeName == 'copyfile':
            self._ParseCopyFile(project, n)
          if n.nodeName == 'linkfile':
            self._ParseLinkFile(project, n)
          if n.nodeName == 'annotation':
            self._ParseAnnotation(project, n)
          if n.nodeName == 'project':
            project.subprojects.append(self._ParseProject(n, parent = project))
    
        return project
    
      def GetProjectPaths(self, name, path):
        relpath = path
        if self.IsMirror:
          worktree = None
          gitdir = os.path.join(self.topdir, '%s.git' % name)
          objdir = gitdir
        else:
          worktree = os.path.join(self.topdir, path).replace('\\', '/')
          gitdir = os.path.join(self.repodir, 'projects', '%s.git' % path)
          objdir = os.path.join(self.repodir, 'project-objects', '%s.git' % name)
        return relpath, worktree, gitdir, objdir
    
      def GetProjectsWithName(self, name):
        return self._projects.get(name, [])
    
      def GetSubprojectName(self, parent, submodule_path):
        return os.path.join(parent.name, submodule_path)
    
      def _JoinRelpath(self, parent_relpath, relpath):
        return os.path.join(parent_relpath, relpath)
    
      def _UnjoinRelpath(self, parent_relpath, relpath):
        return os.path.relpath(relpath, parent_relpath)
    
      def GetSubprojectPaths(self, parent, name, path):
        relpath = self._JoinRelpath(parent.relpath, path)
        gitdir = os.path.join(parent.gitdir, 'subprojects', '%s.git' % path)
        objdir = os.path.join(parent.gitdir, 'subproject-objects', '%s.git' % name)
        if self.IsMirror:
          worktree = None
        else:
          worktree = os.path.join(parent.worktree, path).replace('\\', '/')
        return relpath, worktree, gitdir, objdir
    
      @staticmethod
      def _CheckLocalPath(path, symlink=False):
        """Verify |path| is reasonable for use in <copyfile> & <linkfile>."""
        if '~' in path:
          return '~ not allowed (due to 8.3 filenames on Windows filesystems)'
    
        # Some filesystems (like Apple's HFS+) try to normalize Unicode codepoints
        # which means there are alternative names for ".git".  Reject paths with
        # these in it as there shouldn't be any reasonable need for them here.
        # The set of codepoints here was cribbed from jgit's implementation:
        # https://eclipse.googlesource.com/jgit/jgit/+/9110037e3e9461ff4dac22fee84ef3694ed57648/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectChecker.java#884
        BAD_CODEPOINTS = {
            u'\u200C',  # ZERO WIDTH NON-JOINER
            u'\u200D',  # ZERO WIDTH JOINER
            u'\u200E',  # LEFT-TO-RIGHT MARK
            u'\u200F',  # RIGHT-TO-LEFT MARK
            u'\u202A',  # LEFT-TO-RIGHT EMBEDDING
            u'\u202B',  # RIGHT-TO-LEFT EMBEDDING
            u'\u202C',  # POP DIRECTIONAL FORMATTING
            u'\u202D',  # LEFT-TO-RIGHT OVERRIDE
            u'\u202E',  # RIGHT-TO-LEFT OVERRIDE
            u'\u206A',  # INHIBIT SYMMETRIC SWAPPING
            u'\u206B',  # ACTIVATE SYMMETRIC SWAPPING
            u'\u206C',  # INHIBIT ARABIC FORM SHAPING
            u'\u206D',  # ACTIVATE ARABIC FORM SHAPING
            u'\u206E',  # NATIONAL DIGIT SHAPES
            u'\u206F',  # NOMINAL DIGIT SHAPES
            u'\uFEFF',  # ZERO WIDTH NO-BREAK SPACE
        }
        if BAD_CODEPOINTS & set(path):
          # This message is more expansive than reality, but should be fine.
          return 'Unicode combining characters not allowed'
    
        # Assume paths might be used on case-insensitive filesystems.
        path = path.lower()
    
        # Some people use src="." to create stable links to projects.  Lets allow
        # that but reject all other uses of "." to keep things simple.
        parts = path.split(os.path.sep)
        if parts != ['.']:
          for part in set(parts):
            if part in {'.', '..', '.git'} or part.startswith('.repo'):
              return 'bad component: %s' % (part,)
    
        if not symlink and path.endswith(os.path.sep):
          return 'dirs not allowed'
    
        norm = os.path.normpath(path)
        if norm == '..' or norm.startswith('../') or norm.startswith(os.path.sep):
          return 'path cannot be outside'
    
      @classmethod
      def _ValidateFilePaths(cls, element, src, dest):
        """Verify |src| & |dest| are reasonable for <copyfile> & <linkfile>.
    
        We verify the path independent of any filesystem state as we won't have a
        checkout available to compare to.  i.e. This is for parsing validation
        purposes only.
    
        We'll do full/live sanity checking before we do the actual filesystem
        modifications in _CopyFile/_LinkFile/etc...
        """
        # |dest| is the file we write to or symlink we create.
        # It is relative to the top of the repo client checkout.
        msg = cls._CheckLocalPath(dest)
        if msg:
          raise ManifestInvalidPathError(
              '<%s> invalid "dest": %s: %s' % (element, dest, msg))
    
        # |src| is the file we read from or path we point to for symlinks.
        # It is relative to the top of the git project checkout.
        msg = cls._CheckLocalPath(src, symlink=element == 'linkfile')
        if msg:
          raise ManifestInvalidPathError(
              '<%s> invalid "src": %s: %s' % (element, src, msg))
    
      def _ParseCopyFile(self, project, node):
        src = self._reqatt(node, 'src')
        dest = self._reqatt(node, 'dest')
        if not self.IsMirror:
          # src is project relative;
          # dest is relative to the top of the tree.
          # We only validate paths if we actually plan to process them.
          self._ValidateFilePaths('copyfile', src, dest)
          project.AddCopyFile(src, dest, self.topdir)
    
      def _ParseLinkFile(self, project, node):
        src = self._reqatt(node, 'src')
        dest = self._reqatt(node, 'dest')
        if not self.IsMirror:
          # src is project relative;
          # dest is relative to the top of the tree.
          # We only validate paths if we actually plan to process them.
          self._ValidateFilePaths('linkfile', src, dest)
          project.AddLinkFile(src, dest, self.topdir)
    
      def _ParseAnnotation(self, project, node):
        name = self._reqatt(node, 'name')
        value = self._reqatt(node, 'value')
        try:
          keep = self._reqatt(node, 'keep').lower()
        except ManifestParseError:
          keep = "true"
        if keep != "true" and keep != "false":
          raise ManifestParseError('optional "keep" attribute must be '
                '"true" or "false"')
        project.AddAnnotation(name, value, keep)
    
      def _get_remote(self, node):
        name = node.getAttribute('remote')
        if not name:
          return None
    
        v = self._remotes.get(name)
        if not v:
          raise ManifestParseError("remote %s not defined in %s" %
                (name, self.manifestFile))
        return v
    
      def _reqatt(self, node, attname):
        """
        reads a required attribute from the node.
        """
        v = node.getAttribute(attname)
        if not v:
          raise ManifestParseError("no %s in <%s> within %s" %
                (attname, node.nodeName, self.manifestFile))
        return v
    
      def projectsDiff(self, manifest):
        """return the projects differences between two manifests.
    
        The diff will be from self to given manifest.
    
        """
        fromProjects = self.paths
        toProjects = manifest.paths
    
        fromKeys = sorted(fromProjects.keys())
        toKeys = sorted(toProjects.keys())
    
        diff = {'added': [], 'removed': [], 'changed': [], 'unreachable': []}
    
        for proj in fromKeys:
          if not proj in toKeys:
            diff['removed'].append(fromProjects[proj])
          else:
            fromProj = fromProjects[proj]
            toProj = toProjects[proj]
            try:
              fromRevId = fromProj.GetCommitRevisionId()
              toRevId = toProj.GetCommitRevisionId()
            except ManifestInvalidRevisionError:
              diff['unreachable'].append((fromProj, toProj))
            else:
              if fromRevId != toRevId:
                diff['changed'].append((fromProj, toProj))
            toKeys.remove(proj)
    
        for proj in toKeys:
          diff['added'].append(toProjects[proj])
    
        return diff
    
    
    class GitcManifest(XmlManifest):
    
      def __init__(self, repodir, gitc_client_name):
        """Initialize the GitcManifest object."""
        super(GitcManifest, self).__init__(repodir)
        self.isGitcClient = True
        self.gitc_client_name = gitc_client_name
        self.gitc_client_dir = os.path.join(gitc_utils.get_gitc_manifest_dir(),
                                            gitc_client_name)
        self.manifestFile = os.path.join(self.gitc_client_dir, '.manifest')
    
      def _ParseProject(self, node, parent = None):
        """Override _ParseProject and add support for GITC specific attributes."""
        return super(GitcManifest, self)._ParseProject(
            node, parent=parent, old_revision=node.getAttribute('old-revision'))
    
      def _output_manifest_project_extras(self, p, e):
        """Output GITC Specific Project attributes"""
        if p.old_revision:
          e.setAttribute('old-revision', str(p.old_revision))