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# Copyright (C) 2014-2023 RhodeCode GmbH
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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 Affero General Public License, version 3
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# (only), as published by the Free Software Foundation.
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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 Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This program is dual-licensed. If you wish to learn more about the
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# RhodeCode Enterprise Edition, including its added features, Support services,
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# and proprietary license terms, please see https://rhodecode.com/licenses/
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"""
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GIT diff module
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"""
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import re
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from rhodecode.lib.vcs.backends import base
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class GitDiff(base.Diff):
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_header_re = re.compile(br"""
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#^diff[ ]--git
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[ ]"?a/(?P<a_path>.+?)"?[ ]"?b/(?P<b_path>.+?)"?\n
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(?:^old[ ]mode[ ](?P<old_mode>\d+)\n
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^new[ ]mode[ ](?P<new_mode>\d+)(?:\n|$))?
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(?:^similarity[ ]index[ ](?P<similarity_index>\d+)%(?:\n|$))?
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(?:^rename[ ]from[ ](?P<rename_from>[^\r\n]+)\n
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^rename[ ]to[ ](?P<rename_to>[^\r\n]+)(?:\n|$))?
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(?:^copy[ ]from[ ](?P<copy_from>[^\r\n]+)\n
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^copy[ ]to[ ](?P<copy_to>[^\r\n]+)(?:\n|$))?
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(?:^new[ ]file[ ]mode[ ](?P<new_file_mode>.+)(?:\n|$))?
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(?:^deleted[ ]file[ ]mode[ ](?P<deleted_file_mode>.+)(?:\n|$))?
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(?:^index[ ](?P<a_blob_id>[0-9A-Fa-f]+)
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\.\.(?P<b_blob_id>[0-9A-Fa-f]+)[ ]?(?P<b_mode>.+)?(?:\n|$))?
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(?:^(?P<bin_patch>GIT[ ]binary[ ]patch)(?:\n|$))?
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(?:^---[ ]("?a/(?P<a_file>.+)|/dev/null)(?:\n|$))?
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(?:^\+\+\+[ ]("?b/(?P<b_file>.+)|/dev/null)(?:\n|$))?
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""", re.VERBOSE | re.MULTILINE)
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