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# Copyright (C) 2008 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Import processor that queries the input (and doesn't import)."""
from fastimport import (
commands,
processor,
)
class QueryProcessor(processor.ImportProcessor):
"""An import processor that queries the input.
No changes to the current repository are made.
"""
known_params = commands.COMMAND_NAMES + commands.FILE_COMMAND_NAMES + \
['commit-mark']
def __init__(self, params=None, verbose=False):
processor.ImportProcessor.__init__(self, params, verbose)
self.parsed_params = {}
self.interesting_commit = None
self._finished = False
if params:
if 'commit-mark' in params:
self.interesting_commit = params['commit-mark']
del params['commit-mark']
for name, value in params.iteritems():
if value == 1:
# All fields
fields = None
else:
fields = value.split(',')
self.parsed_params[name] = fields
def pre_handler(self, cmd):
"""Hook for logic before each handler starts."""
if self._finished:
return
if self.interesting_commit and cmd.name == 'commit':
if cmd.mark == self.interesting_commit:
print cmd.to_string()
self._finished = True
return
if self.parsed_params.has_key(cmd.name):
fields = self.parsed_params[cmd.name]
str = cmd.dump_str(fields, self.parsed_params, self.verbose)
print "%s" % (str,)
def progress_handler(self, cmd):
"""Process a ProgressCommand."""
pass
def blob_handler(self, cmd):
"""Process a BlobCommand."""
pass
def checkpoint_handler(self, cmd):
"""Process a CheckpointCommand."""
pass
def commit_handler(self, cmd):
"""Process a CommitCommand."""
pass
def reset_handler(self, cmd):
"""Process a ResetCommand."""
pass
def tag_handler(self, cmd):
"""Process a TagCommand."""
pass
def feature_handler(self, cmd):
"""Process a FeatureCommand."""
feature = cmd.feature_name
if feature not in commands.FEATURE_NAMES:
self.warning("feature %s is not supported - parsing may fail"
% (feature,))
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