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122 lines
3.8 KiB
Python
122 lines
3.8 KiB
Python
#!/usr/bin/python
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###############################################################################
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# Formatting filter for urllib2's HTTPHandler(debuglevel=1) output
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# Copyright (c) 2013, Analytics Pros
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#
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# This project is free software, distributed under the BSD license.
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# Analytics Pros offers consulting and integration services if your firm needs
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# assistance in strategy, implementation, or auditing existing work.
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###############################################################################
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import sys, re, os
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from io import StringIO
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class BufferTranslator(object):
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""" Provides a buffer-compatible interface for filtering buffer content.
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"""
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parsers = []
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def __init__(self, output):
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self.output = output
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self.encoding = getattr(output, 'encoding', None)
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def write(self, content):
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content = self.translate(content)
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self.output.write(content)
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@staticmethod
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def stripslashes(content):
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return content.decode('string_escape')
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@staticmethod
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def addslashes(content):
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return content.encode('string_escape')
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def translate(self, line):
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for pattern, method in self.parsers:
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match = pattern.match(line)
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if match:
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return method(match)
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return line
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class LineBufferTranslator(BufferTranslator):
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""" Line buffer implementation supports translation of line-format input
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even when input is not already line-buffered. Caches input until newlines
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occur, and then dispatches translated input to output buffer.
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"""
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def __init__(self, *a, **kw):
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self._linepending = []
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super(LineBufferTranslator, self).__init__(*a, **kw)
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def write(self, _input):
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lines = _input.splitlines(True)
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for i in range(0, len(lines)):
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last = i
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if lines[i].endswith('\n'):
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prefix = len(self._linepending) and ''.join(self._linepending) or ''
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self.output.write(self.translate(prefix + lines[i]))
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del self._linepending[0:]
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last = -1
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if last >= 0:
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self._linepending.append(lines[ last ])
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def __del__(self):
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if len(self._linepending):
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self.output.write(self.translate(''.join(self._linepending)))
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class HTTPTranslator(LineBufferTranslator):
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""" Translates output from |urllib2| HTTPHandler(debuglevel = 1) into
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HTTP-compatible, readible text structures for human analysis.
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"""
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RE_LINE_PARSER = re.compile(r'^(?:([a-z]+):)\s*(\'?)([^\r\n]*)\2(?:[\r\n]*)$')
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RE_LINE_BREAK = re.compile(r'(\r?\n|(?:\\r)?\\n)')
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RE_HTTP_METHOD = re.compile(r'^(POST|GET|HEAD|DELETE|PUT|TRACE|OPTIONS)')
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RE_PARAMETER_SPACER = re.compile(r'&([a-z0-9]+)=')
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@classmethod
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def spacer(cls, line):
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return cls.RE_PARAMETER_SPACER.sub(r' &\1= ', line)
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def translate(self, line):
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parsed = self.RE_LINE_PARSER.match(line)
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if parsed:
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value = parsed.group(3)
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stage = parsed.group(1)
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if stage == 'send': # query string is rendered here
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return '\n# HTTP Request:\n' + self.stripslashes(value)
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elif stage == 'reply':
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return '\n\n# HTTP Response:\n' + self.stripslashes(value)
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elif stage == 'header':
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return value + '\n'
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else:
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return value
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return line
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def consume(outbuffer = None): # Capture standard output
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sys.stdout = HTTPTranslator(outbuffer or sys.stdout)
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return sys.stdout
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if __name__ == '__main__':
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consume(sys.stdout).write(sys.stdin.read())
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print('\n')
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# vim: set nowrap tabstop=4 shiftwidth=4 softtabstop=0 expandtab textwidth=0 filetype=python foldmethod=indent foldcolumn=4
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