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coope/django_tex/exceptions.py
2019-01-06 15:57:02 +01:00

40 lines
1.3 KiB
Python

import re
def prettify_message(message):
'''
Helper methods that removes consecutive whitespaces and newline characters
'''
# Replace consecutive whitespaces with a single whitespace
message = re.sub(r'[ ]{2,}', ' ', message)
# Replace consecutive newline characters, optionally separated by whitespace, with a single newline
message = re.sub(r'([\r\n][ \t]*)+', '\n', message)
return message
def tokenizer(code):
token_specification = [
('ERROR', r'\! (?:.+[\r\n])+[\r\n]+'),
('WARNING', r'latex warning.*'),
('NOFILE', r'no file.*')
]
token_regex = '|'.join('(?P<{}>{})'.format(label, regex) for label, regex in token_specification)
for m in re.finditer(token_regex, code, re.IGNORECASE):
token_dict = dict(type=m.lastgroup, message=prettify_message(m.group()))
yield token_dict
class TexError(Exception):
def __init__(self, log, source):
self.log = log
self.source = source
self.tokens = list(tokenizer(self.log))
self.message = self.get_message()
def get_message(self):
for token in self.tokens:
if token['type'] == 'ERROR':
return token['message']
return 'No error message found in log'
def __str__(self):
return self.message