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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py b/testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py new file mode 100644 index 0000000000..d353967618 --- /dev/null +++ b/testing/mochitest/pywebsocket3/mod_pywebsocket/memorizingfile.py @@ -0,0 +1,99 @@ +#!/usr/bin/env python +# +# Copyright 2011, Google Inc. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above +# copyright notice, this list of conditions and the following disclaimer +# in the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Google Inc. nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +"""Memorizing file. + +A memorizing file wraps a file and memorizes lines read by readline. +""" + +from __future__ import absolute_import +import sys + + +class MemorizingFile(object): + """MemorizingFile wraps a file and memorizes lines read by readline. + + Note that data read by other methods are not memorized. This behavior + is good enough for memorizing lines SimpleHTTPServer reads before + the control reaches WebSocketRequestHandler. + """ + def __init__(self, file_, max_memorized_lines=sys.maxsize): + """Construct an instance. + + Args: + file_: the file object to wrap. + max_memorized_lines: the maximum number of lines to memorize. + Only the first max_memorized_lines are memorized. + Default: sys.maxint. + """ + self._file = file_ + self._memorized_lines = [] + self._max_memorized_lines = max_memorized_lines + self._buffered = False + self._buffered_line = None + + def __getattribute__(self, name): + """Return a file attribute. + + Returns the value overridden by this class for some attributes, + and forwards the call to _file for the other attributes. + """ + if name in ('_file', '_memorized_lines', '_max_memorized_lines', + '_buffered', '_buffered_line', 'readline', + 'get_memorized_lines'): + return object.__getattribute__(self, name) + return self._file.__getattribute__(name) + + def readline(self, size=-1): + """Override file.readline and memorize the line read. + + Note that even if size is specified and smaller than actual size, + the whole line will be read out from underlying file object by + subsequent readline calls. + """ + if self._buffered: + line = self._buffered_line + self._buffered = False + else: + line = self._file.readline() + if line and len(self._memorized_lines) < self._max_memorized_lines: + self._memorized_lines.append(line) + if size >= 0 and size < len(line): + self._buffered = True + self._buffered_line = line[size:] + return line[:size] + return line + + def get_memorized_lines(self): + """Get lines memorized so far.""" + return self._memorized_lines + + +# vi:sts=4 sw=4 et |