/
example.py
executable file
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/
example.py
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#!/usr/bin/env python
from toyparse.parser import Parser, ParseError
from toyparse.character import CharacterParser, NotCharacterParser, CharacterClassParser
from toyparse.combinator import SequenceParser, OneOrMoreParser, AnyOfParser
from string import ascii_letters, digits, punctuation
string = \
"""------------------------
Author: Johannes
Date: 2015-08-20
asdf/asdf
------------------------
"""
class WordParser(OneOrMoreParser):
def __init__(self):
OneOrMoreParser.__init__(self,
CharacterClassParser(
ascii_letters+digits+"-"
)
)
def transform(self, result):
return "".join(result)
seplineparser = SequenceParser(
CharacterParser("-"),
OneOrMoreParser(
CharacterParser("-")
),
CharacterParser("\n")
)
class KVLineParser(SequenceParser):
def __init__(self):
SequenceParser.__init__(self,
WordParser(),
CharacterParser(":"),
OneOrMoreParser(
CharacterParser(" ")
),
WordParser(),
CharacterParser("\n")
)
def transform(self, result):
return (result[0], result[3])
headerparser = SequenceParser(
seplineparser,
OneOrMoreParser(
KVLineParser()
),
seplineparser
)
try:
headerparser.parse(string)
except ParseError as p:
desc = p.parser.describe()
print("[e] ParseError in parser \"%s\"" % (desc['name']))
print(" wants: %s" % desc ['wants'])
print(" got: %s" % p.got[:10])