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loggerhead/controllers/bundle_ui.py
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#
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# Copyright (C) 2006  Robey Pointer <robey@lag.net>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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#
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import time
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from paste import httpexceptions
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from paste.request import path_info_pop
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class BundleUI (object):
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    def __init__(self, branch):
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        # BranchView object
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        self._branch = branch
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        self.log = branch.log
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    def default(self, request, response):
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        # /bundle/<rev_id>/[<compare_rev_id>/]filename
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        z = time.time()
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        h = self._branch.history
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        h._branch.lock_read()
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        try:
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            args = []
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            while 1:
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                arg = path_info_pop(request.environ)
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                if arg is None:
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                    break
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                args.append(arg)
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            if len(args) < 1:
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                raise httpexceptions.HTTPMovedPermanently('../changes')
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            revid = h.fix_revid(args[0])
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            if len(args) >= 3:
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                compare_revid = h.fix_revid(args[1])
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            else:
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                compare_revid = None
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            try:
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                bundle_data = h.get_bundle(revid, compare_revid)
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            except:
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                self.log.exception('Exception fetching bundle')
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                raise httpexceptions.HTTPServerError('Could not fetch bundle')
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            response.headers['Content-Type'] = 'application/octet-stream'
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            response.headers['Content-Length'] = len(bundle_data)
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            response.write(bundle_data)
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            self.log.info('/bundle: %r seconds' % (time.time() - z,))
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        finally:
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            h._branch.unlock()