from __future__ import absolute_import, division, unicode_literals
import json
import warnings
import re
from six import unichr
from .support import get_data_files
from html5lib.tokenizer import HTMLTokenizer
from html5lib import constants, utils
class TokenizerTestParser(object):
def __init__(self, initialState, lastStartTag=None):
self.tokenizer = HTMLTokenizer
self._state = initialState
self._lastStartTag = lastStartTag
def parse(self, stream, encoding=None, innerHTML=False):
tokenizer = self.tokenizer(stream, encoding)
self.outputTokens = []
tokenizer.state = getattr(tokenizer, self._state)
if self._lastStartTag is not None:
tokenizer.currentToken = {"type": "startTag",
"name": self._lastStartTag}
types = dict((v, k) for k, v in constants.tokenTypes.items())
for token in tokenizer:
getattr(self, 'process%s' % types[token["type"]])(token)
return self.outputTokens
def processDoctype(self, token):
self.outputTokens.append(["DOCTYPE", token["name"], token["publicId"],
token["systemId"], token["correct"]])
def processStartTag(self, token):
self.outputTokens.append(["StartTag", token["name"],
dict(token["data"][::-1]), token["selfClosing"]])
def processEmptyTag(self, token):
if token["name"] not in constants.voidElements:
self.outputTokens.append("ParseError")
self.outputTokens.append(["StartTag", token["name"], dict(token["data"][::-1])])
def processEndTag(self, token):
self.outputTokens.append(["EndTag", token["name"],
token["selfClosing"]])
def processComment(self, token):
self.outputTokens.append(["Comment", token["data"]])
def processSpaceCharacters(self, token):
self.outputTokens.append(["Character", token["data"]])
self.processSpaceCharacters = self.processCharacters
def processCharacters(self, token):
self.outputTokens.append(["Character", token["data"]])
def processEOF(self, token):
pass
def processParseError(self, token):
self.outputTokens.append(["ParseError", token["data"]])
def concatenateCharacterTokens(tokens):
outputTokens = []
for token in tokens:
if "ParseError" not in token and token[0] == "Character":
if (outputTokens and "ParseError" not in outputTokens[-1] and
outputTokens[-1][0] == "Character"):
outputTokens[-1][1] += token[1]
else:
outputTokens.append(token)
else:
outputTokens.append(token)
return outputTokens
def normalizeTokens(tokens):
# TODO: convert tests to reflect arrays
for i, token in enumerate(tokens):
if token[0] == 'ParseError':
tokens[i] = token[0]
return tokens
def tokensMatch(expectedTokens, receivedTokens, ignoreErrorOrder,
ignoreErrors=False):
"""Test whether the test has passed or failed
If the ignoreErrorOrder flag is set to true we don't test the relative
positions of parse errors and non parse errors
"""
checkSelfClosing = False
for token in expectedTokens:
if (token[0] == "StartTag" and len(token) == 4
or token[0] == "EndTag" and len(token) == 3):
checkSelfClosing = True
break
if not checkSelfClosing:
for token in receivedTokens:
if token[0] == "StartTag" or token[0] == "EndTag":
token.pop()
if not ignoreErrorOrder and not ignoreErrors:
return expectedTokens == receivedTokens
else:
# Sort the tokens into two groups; non-parse errors and parse errors
tokens = {"expected": [[], []], "received": [[], []]}
for tokenType, tokenList in zip(list(tokens.keys()),
(expectedTokens, receivedTokens)):
for token in tokenList:
if token != "ParseError":
tokens[tokenType][0].append(token)
else:
if not ignoreErrors:
tokens[tokenType][1].append(token)
return tokens["expected"] == tokens["received"]
_surrogateRe = re.compile(r"\\u([0-9A-Fa-f]{4})(?:\\u([0-9A-Fa-f]{4}))?")
def unescape(test):
def decode(inp):
"""Decode \\uXXXX escapes
This decodes \\uXXXX escapes, possibly into non-BMP characters when
two surrogate character escapes are adjacent to each other.
"""
# This cannot be implemented using the unicode_escape codec
# because that requires its input be ISO-8859-1, and we need
# arbitrary unicode as input.
def repl(m):
if m.group(2) is not None:
high = int(m.group(1), 16)
low = int(m.group(2), 16)
if 0xD800 <= high <= 0xDBFF and 0xDC00 <= low <= 0xDFFF:
cp = ((high - 0xD800) << 10) + (low - 0xDC00) + 0x10000
return unichr(cp)
else:
return unichr(high) + unichr(low)
else:
return unichr(int(m.group(1), 16))
try:
return _surrogateRe.sub(repl, inp)
except ValueError:
# This occurs when unichr throws ValueError, which should
# only be for a lone-surrogate.
if utils.supports_lone_surrogates:
raise
return None
test["input"] = decode(test["input"])
for token in test["output"]:
if token == "ParseError":
continue
else:
token[1] = decode(token[1])
if len(token) > 2:
for key, value in token[2]:
del token[2][key]
token[2][decode(key)] = decode(value)
return test
def runTokenizerTest(test):
warnings.resetwarnings()
warnings.simplefilter("error")
expected = concatenateCharacterTokens(test['output'])
if 'lastStartTag' not in test:
test['lastStartTag'] = None
parser = TokenizerTestParser(test['initialState'],
test['lastStartTag'])
tokens = parser.parse(test['input'])
tokens = concatenateCharacterTokens(tokens)
received = normalizeTokens(tokens)
errorMsg = "\n".join(["\n\nInitial state:",
test['initialState'],
"\nInput:", test['input'],
"\nExpected:", repr(expected),
"\nreceived:", repr(tokens)])
errorMsg = errorMsg
ignoreErrorOrder = test.get('ignoreErrorOrder', False)
assert tokensMatch(expected, received, ignoreErrorOrder, True), errorMsg
def _doCapitalize(match):
return match.group(1).upper()
_capitalizeRe = re.compile(r"\W+(\w)").sub
def capitalize(s):
s = s.lower()
s = _capitalizeRe(_doCapitalize, s)
return s
def testTokenizer():
for filename in get_data_files('tokenizer', '*.test'):
with open(filename) as fp:
tests = json.load(fp)
if 'tests' in tests:
for index, test in enumerate(tests['tests']):
if 'initialStates' not in test:
test["initialStates"] = ["Data state"]
if 'doubleEscaped' in test:
test = unescape(test)
if test["input"] is None:
continue # Not valid input for this platform
for initialState in test["initialStates"]:
test["initialState"] = capitalize(initialState)
yield runTokenizerTest, test