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# Copyright (C) 2008 Canonical Ltd
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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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# 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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# 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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"""The python implementation of chunks_to_lines"""
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def chunks_to_lines(chunks):
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"""Re-split chunks into simple lines.
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Each entry in the result should contain a single newline at the end. Except
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for the last entry which may not have a final newline. If chunks is already
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a simple list of lines, we return it directly.
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:param chunks: An list/tuple of strings. If chunks is already a list of
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lines, then we will return it as-is.
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:return: A list of strings.
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# Optimize for a very common case when chunks are already lines
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last_no_newline = False
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# Only the last chunk is allowed to not have a trailing newline
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# Getting here means the last chunk didn't have a newline, and we
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# have a chunk following it
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# Empty strings are never valid lines
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elif '\n' in chunk[:-1]:
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# This chunk has an extra '\n', so we will have to split it
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elif chunk[-1] != '\n':
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# This chunk does not have a trailing newline
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last_no_newline = True
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# All of the lines (but possibly the last) have a single newline at the
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# For the last one, we allow it to not have a trailing newline, but it
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# is not allowed to be an empty string.
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# These aren't simple lines, just join and split again.
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from bzrlib import osutils
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return osutils._split_lines(''.join(chunks))
added
removed
bzrlib/_chunks_to_lines_py.py
