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# SPDX-FileCopyrightText: 2006-2021 html5lib contributors. See AUTHORS.rst
#
# SPDX-License-Identifier: MIT
from __future__ import absolute_import, division, unicode_literals
from . import support # noqa
import codecs
import sys
from io import BytesIO, StringIO
import pytest
import six
from six.moves import http_client, urllib
from html5lib._inputstream import (BufferedStream, HTMLInputStream,
HTMLUnicodeInputStream, HTMLBinaryInputStream)
from html5lib._utils import supports_lone_surrogates
def test_basic():
s = b"abc"
fp = BufferedStream(BytesIO(s))
read = fp.read(10)
assert read == s
def test_read_length():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
read2 = fp.read(2)
assert read2 == b"bc"
read3 = fp.read(3)
assert read3 == b"def"
read4 = fp.read(4)
assert read4 == b""
def test_tell():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
assert fp.tell() == 1
read2 = fp.read(2)
assert read2 == b"bc"
assert fp.tell() == 3
read3 = fp.read(3)
assert read3 == b"def"
assert fp.tell() == 6
read4 = fp.read(4)
assert read4 == b""
assert fp.tell() == 6
def test_seek():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
fp.seek(0)
read2 = fp.read(1)
assert read2 == b"a"
read3 = fp.read(2)
assert read3 == b"bc"
fp.seek(2)
read4 = fp.read(2)
assert read4 == b"cd"
fp.seek(4)
read5 = fp.read(2)
assert read5 == b"ef"
def test_seek_tell():
fp = BufferedStream(BytesIO(b"abcdef"))
read1 = fp.read(1)
assert read1 == b"a"
assert fp.tell() == 1
fp.seek(0)
read2 = fp.read(1)
assert read2 == b"a"
assert fp.tell() == 1
read3 = fp.read(2)
assert read3 == b"bc"
assert fp.tell() == 3
fp.seek(2)
read4 = fp.read(2)
assert read4 == b"cd"
assert fp.tell() == 4
fp.seek(4)
read5 = fp.read(2)
assert read5 == b"ef"
assert fp.tell() == 6
class HTMLUnicodeInputStreamShortChunk(HTMLUnicodeInputStream):
_defaultChunkSize = 2
class HTMLBinaryInputStreamShortChunk(HTMLBinaryInputStream):
_defaultChunkSize = 2
def test_char_ascii():
stream = HTMLInputStream(b"'", override_encoding='ascii')
assert stream.charEncoding[0].name == 'windows-1252'
assert stream.char() == "'"
def test_char_utf8():
stream = HTMLInputStream('\u2018'.encode('utf-8'), override_encoding='utf-8')
assert stream.charEncoding[0].name == 'utf-8'
assert stream.char() == '\u2018'
def test_char_win1252():
stream = HTMLInputStream("\xa9\xf1\u2019".encode('windows-1252'))
assert stream.charEncoding[0].name == 'windows-1252'
assert stream.char() == "\xa9"
assert stream.char() == "\xf1"
assert stream.char() == "\u2019"
def test_bom():
stream = HTMLInputStream(codecs.BOM_UTF8 + b"'")
assert stream.charEncoding[0].name == 'utf-8'
assert stream.char() == "'"
def test_utf_16():
stream = HTMLInputStream((' ' * 1025).encode('utf-16'))
assert stream.charEncoding[0].name in ['utf-16le', 'utf-16be']
assert len(stream.charsUntil(' ', True)) == 1025
def test_newlines():
stream = HTMLBinaryInputStreamShortChunk(codecs.BOM_UTF8 + b"a\nbb\r\nccc\rddddxe")
assert stream.position() == (1, 0)
assert stream.charsUntil('c') == "a\nbb\n"
assert stream.position() == (3, 0)
assert stream.charsUntil('x') == "ccc\ndddd"
assert stream.position() == (4, 4)
assert stream.charsUntil('e') == "x"
assert stream.position() == (4, 5)
def test_newlines2():
size = HTMLUnicodeInputStream._defaultChunkSize
stream = HTMLInputStream("\r" * size + "\n")
assert stream.charsUntil('x') == "\n" * size
def test_position():
stream = HTMLBinaryInputStreamShortChunk(codecs.BOM_UTF8 + b"a\nbb\nccc\nddde\nf\ngh")
assert stream.position() == (1, 0)
assert stream.charsUntil('c') == "a\nbb\n"
assert stream.position() == (3, 0)
stream.unget("\n")
assert stream.position() == (2, 2)
assert stream.charsUntil('c') == "\n"
assert stream.position() == (3, 0)
stream.unget("\n")
assert stream.position() == (2, 2)
assert stream.char() == "\n"
assert stream.position() == (3, 0)
assert stream.charsUntil('e') == "ccc\nddd"
assert stream.position() == (4, 3)
assert stream.charsUntil('h') == "e\nf\ng"
assert stream.position() == (6, 1)
def test_position2():
stream = HTMLUnicodeInputStreamShortChunk("abc\nd")
assert stream.position() == (1, 0)
assert stream.char() == "a"
assert stream.position() == (1, 1)
assert stream.char() == "b"
assert stream.position() == (1, 2)
assert stream.char() == "c"
assert stream.position() == (1, 3)
assert stream.char() == "\n"
assert stream.position() == (2, 0)
assert stream.char() == "d"
assert stream.position() == (2, 1)
def test_python_issue_20007():
"""
Make sure we have a work-around for Python bug #20007
http://bugs.python.org/issue20007
"""
class FakeSocket(object):
def makefile(self, _mode, _bufsize=None):
# pylint:disable=unused-argument
return BytesIO(b"HTTP/1.1 200 Ok\r\n\r\nText")
source = http_client.HTTPResponse(FakeSocket())
source.begin()
stream = HTMLInputStream(source)
assert stream.charsUntil(" ") == "Text"
def test_python_issue_20007_b():
"""
Make sure we have a work-around for Python bug #20007
http://bugs.python.org/issue20007
"""
if six.PY2:
return
class FakeSocket(object):
def makefile(self, _mode, _bufsize=None):
# pylint:disable=unused-argument
return BytesIO(b"HTTP/1.1 200 Ok\r\n\r\nText")
source = http_client.HTTPResponse(FakeSocket())
source.begin()
wrapped = urllib.response.addinfourl(source, source.msg, "http://example.com")
stream = HTMLInputStream(wrapped)
assert stream.charsUntil(" ") == "Text"
@pytest.mark.parametrize("inp,num",
[("\u0000", 0),
("\u0001", 1),
("\u0008", 1),
("\u0009", 0),
("\u000A", 0),
("\u000B", 1),
("\u000C", 0),
("\u000D", 0),
("\u000E", 1),
("\u001F", 1),
("\u0020", 0),
("\u007E", 0),
("\u007F", 1),
("\u009F", 1),
("\u00A0", 0),
("\uFDCF", 0),
("\uFDD0", 1),
("\uFDEF", 1),
("\uFDF0", 0),
("\uFFFD", 0),
("\uFFFE", 1),
("\uFFFF", 1),
("\U0001FFFD", 0),
("\U0001FFFE", 1),
("\U0001FFFF", 1),
("\U0002FFFD", 0),
("\U0002FFFE", 1),
("\U0002FFFF", 1),
("\U0003FFFD", 0),
("\U0003FFFE", 1),
("\U0003FFFF", 1),
("\U0004FFFD", 0),
("\U0004FFFE", 1),
("\U0004FFFF", 1),
("\U0005FFFD", 0),
("\U0005FFFE", 1),
("\U0005FFFF", 1),
("\U0006FFFD", 0),
("\U0006FFFE", 1),
("\U0006FFFF", 1),
("\U0007FFFD", 0),
("\U0007FFFE", 1),
("\U0007FFFF", 1),
("\U0008FFFD", 0),
("\U0008FFFE", 1),
("\U0008FFFF", 1),
("\U0009FFFD", 0),
("\U0009FFFE", 1),
("\U0009FFFF", 1),
("\U000AFFFD", 0),
("\U000AFFFE", 1),
("\U000AFFFF", 1),
("\U000BFFFD", 0),
("\U000BFFFE", 1),
("\U000BFFFF", 1),
("\U000CFFFD", 0),
("\U000CFFFE", 1),
("\U000CFFFF", 1),
("\U000DFFFD", 0),
("\U000DFFFE", 1),
("\U000DFFFF", 1),
("\U000EFFFD", 0),
("\U000EFFFE", 1),
("\U000EFFFF", 1),
("\U000FFFFD", 0),
("\U000FFFFE", 1),
("\U000FFFFF", 1),
("\U0010FFFD", 0),
("\U0010FFFE", 1),
("\U0010FFFF", 1),
("\x01\x01\x01", 3),
("a\x01a\x01a\x01a", 3)])
def test_invalid_codepoints(inp, num):
stream = HTMLUnicodeInputStream(StringIO(inp))
for _i in range(len(inp)):
stream.char()
assert len(stream.errors) == num
@pytest.mark.skipif(not supports_lone_surrogates, reason="doesn't support lone surrogates")
@pytest.mark.parametrize("inp,num",
[("'\\uD7FF'", 0),
("'\\uD800'", 1),
("'\\uDBFF'", 1),
("'\\uDC00'", 1),
("'\\uDFFF'", 1),
("'\\uE000'", 0),
("'\\uD800\\uD800\\uD800'", 3),
("'a\\uD800a\\uD800a\\uD800a'", 3),
("'\\uDFFF\\uDBFF'", 2),
pytest.param(
"'\\uDBFF\\uDFFF'", 2,
marks=pytest.mark.skipif(
sys.maxunicode == 0xFFFF,
reason="narrow Python"))])
def test_invalid_codepoints_surrogates(inp, num):
inp = eval(inp) # pylint:disable=eval-used
fp = StringIO(inp)
if ord(max(fp.read())) > 0xFFFF:
pytest.skip("StringIO altered string")
fp.seek(0)
stream = HTMLUnicodeInputStream(fp)
for _i in range(len(inp)):
stream.char()
assert len(stream.errors) == num