/usr/lib/python2.7/dist-packages/pybtex/auxfile.py is in pybtex 0.20.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | # Copyright (c) 2006-2016 Andrey Golovizin
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
"""parse LaTeX aux file
"""
from __future__ import with_statement
import re
import pybtex.io
from pybtex.exceptions import PybtexError
from pybtex.errors import report_error
class AuxDataError(PybtexError):
def __init__(self, message, context=None):
super(AuxDataError, self).__init__(message, context.filename)
self.context = context
def get_context(self):
if self.context.line:
marker = '^' * len(self.context.line)
return self.context.line + '\n' + marker
def __unicode__(self):
base_message = super(AuxDataError, self).__unicode__()
lineno = self.context.lineno
location = 'in line {0}: '.format(lineno) if lineno else ''
return location + base_message
class AuxDataContext(object):
lineno = None
line = None
filename = None
def __init__(self, filename):
self.filename = filename
class AuxData(object):
command_re = re.compile(r'\\(citation|bibdata|bibstyle|@input){(.*)}')
context = None
style = None
data = None
citations = None
def __init__(self, encoding):
self.encoding = encoding
self.citations = []
self._canonical_keys = {}
def handle_citation(self, keys):
for key in keys.split(','):
key_lower = key.lower()
if key_lower in self._canonical_keys:
existing_key = self._canonical_keys[key_lower]
if key != existing_key:
msg = 'case mismatch error between cite keys {0} and {1}'
report_error(AuxDataError(msg.format(key, existing_key), self.context))
self.citations.append(key)
self._canonical_keys[key_lower] = key
def handle_bibstyle(self, style):
if self.style is not None:
report_error(AuxDataError(r'illegal, another \bibstyle command', self.context))
else:
self.style = style
def handle_bibdata(self, bibdata):
if self.data is not None:
report_error(AuxDataError(r'illegal, another \bibdata command', self.context))
else:
self.data = bibdata.split(',')
def handle_input(self, filename):
self.parse_file(filename, toplevel=False)
def handle_command(self, command, value):
action = getattr(self, 'handle_%s' % command.lstrip('@'))
action(value)
def parse_line(self, line, lineno):
self.context.lineno = lineno
self.context.line = line.strip()
match = self.command_re.match(line)
if match:
command, value = match.groups()
self.handle_command(command, value)
def parse_file(self, filename, toplevel=True):
previous_context = self.context
self.context = AuxDataContext(filename)
with pybtex.io.open_unicode(filename, encoding=self.encoding) as aux_file:
for lineno, line in enumerate(aux_file, 1):
self.parse_line(line, lineno)
if previous_context:
self.context = previous_context
else:
self.context.line = None
self.context.lineno = None
# these errors are fatal - always raise an exception instead of using
# erorrs.report_error()
if toplevel and self.data is None:
raise AuxDataError(r'found no \bibdata command', self.context)
if toplevel and self.style is None:
raise AuxDataError(r'found no \bibstyle command', self.context)
def parse_file(filename, encoding=None):
"""Parse a file and return an AuxData object."""
data = AuxData(encoding)
data.parse_file(filename)
return data
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