Tools/Scripts/webkitpy/common/checkout/checkout.py

# Copyright (c) 2010 Google Inc. All rights reserved.
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import StringIO

from webkitpy.common.config import urls
from webkitpy.common.checkout.scm import CommitMessage
from webkitpy.common.checkout.deps import DEPS
from webkitpy.common.memoized import memoized
from webkitpy.common.system.executive import ScriptError


# This class represents the WebKit-specific parts of the checkout.
# NOTE: All paths returned from this class should be absolute.
class Checkout(object):
    def __init__(self, scm, executive=None, filesystem=None):
        self._scm = scm
        # FIXME: We shouldn't be grabbing at private members on scm.
        self._executive = executive or self._scm._executive
        self._filesystem = filesystem or self._scm._filesystem

    def _modified_files_matching_predicate(self, git_commit, predicate, changed_files=None):
        # SCM returns paths relative to scm.checkout_root
        # Callers (especially those using the ChangeLog class) may
        # expect absolute paths, so this method returns absolute paths.
        if not changed_files:
            changed_files = self._scm.changed_files(git_commit)
        return filter(predicate, map(self._scm.absolute_path, changed_files))

    def recent_commit_infos_for_files(self, paths):
        revisions = set(sum(map(self._scm.revisions_changing_file, paths), []))
        return set(map(self.commit_info_for_revision, revisions))

    def apply_patch(self, patch):
        # It's possible that the patch was not made from the root directory.
        # We should detect and handle that case.
        # FIXME: Move _scm.script_path here once we get rid of all the dependencies.
        # --force (continue after errors) is the common case, so we always use it.
        args = [self._scm.script_path('svn-apply'), "--force"]
        if patch.reviewer():
            args += ['--reviewer', patch.reviewer().full_name]
        self._executive.run_command(args, input=patch.contents(), cwd=self._scm.checkout_root)

    def apply_reverse_diff(self, revision):
        self._scm.apply_reverse_diff(revision)

        conflicts = self._scm.conflicted_files()
        if len(conflicts):
            raise ScriptError(message="Failed to apply reverse diff for revision %s because of the following conflicts:\n%s" % (revision, "\n".join(conflicts)))

    def apply_reverse_diffs(self, revision_list):
        for revision in sorted(revision_list, reverse=True):
            self.apply_reverse_diff(revision)