69 lines
3 KiB
Python
69 lines
3 KiB
Python
import re
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from ietf.submit.parsers.base import FileParser
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class PlainParser(FileParser):
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def __init__(self, fd):
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super(PlainParser, self).__init__(fd)
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# If some error is found after this method invocation
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# no other file parsing is recommended
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def critical_parse(self):
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super(PlainParser, self).critical_parse()
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self.parse_filename_extension('txt')
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self.parse_file_type('txt', 'text/plain')
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self.parse_file_charset()
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self.parse_name()
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return self.parsed_info
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def parse_file_charset(self):
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import magic
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self.fd.file.seek(0)
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content = self.fd.file.read(4096)
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if hasattr(magic, "open"):
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m = magic.open(magic.MAGIC_MIME)
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m.load()
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filetype = m.buffer(content)
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else:
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m = magic.Magic()
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m.cookie = magic.magic_open(magic.MAGIC_NONE | magic.MAGIC_MIME | magic.MAGIC_MIME_ENCODING)
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magic.magic_load(m.cookie, None)
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filetype = m.from_buffer(content)
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if not 'ascii' in filetype:
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self.parsed_info.add_error('A plain text ASCII document must be submitted.')
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def parse_name(self):
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self.fd.file.seek(0)
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draftre = re.compile('(draft-\S+)')
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revisionre = re.compile('.*-(\d+)$')
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limit = 80
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while limit:
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limit -= 1
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line = self.fd.readline()
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match = draftre.search(line)
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if not match:
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continue
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name = match.group(1)
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name = re.sub('^[^\w]+', '', name)
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name = re.sub('[^\w]+$', '', name)
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name = re.sub('\.txt$', '', name)
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extra_chars = re.sub('[0-9a-z\-]', '', name)
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if extra_chars:
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if len(extra_chars) == 1:
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self.parsed_info.add_error((u'The document name on the first page, "%s", contains a disallowed character with byte code: %s ' % (name.decode('utf-8','replace'), ord(extra_chars[0]))) +
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u'(see https://www.ietf.org/id-info/guidelines.html#naming for details).')
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else:
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self.parsed_info.add_error((u'The document name on the first page, "%s", contains disallowed characters with byte codes: %s ' % (name.decode('utf-8','replace'), (', '.join([ str(ord(c)) for c in extra_chars] )))) +
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u'(see https://www.ietf.org/id-info/guidelines.html#naming for details).')
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match_revision = revisionre.match(name)
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if match_revision:
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self.parsed_info.metadata.rev = match_revision.group(1)
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else:
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self.parsed_info.add_error(u'The name found on the first page of the document does not contain a revision: "%s"' % (name.decode('utf-8','replace'),))
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name = re.sub('-\d+$', '', name)
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self.parsed_info.metadata.name = name
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return
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self.parsed_info.add_error('The first page of the document does not contain a legitimate name that start with draft-*')
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