/usr/lib/python2.7/dist-packages/html5lib/filters/lint.py is in python-html5lib 0.999-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | from __future__ import absolute_import, division, unicode_literals
from gettext import gettext
_ = gettext
from . import _base
from ..constants import cdataElements, rcdataElements, voidElements
from ..constants import spaceCharacters
spaceCharacters = "".join(spaceCharacters)
class LintError(Exception):
pass
class Filter(_base.Filter):
def __iter__(self):
open_elements = []
contentModelFlag = "PCDATA"
for token in _base.Filter.__iter__(self):
type = token["type"]
if type in ("StartTag", "EmptyTag"):
name = token["name"]
if contentModelFlag != "PCDATA":
raise LintError(_("StartTag not in PCDATA content model flag: %(tag)s") % {"tag": name})
if not isinstance(name, str):
raise LintError(_("Tag name is not a string: %(tag)r") % {"tag": name})
if not name:
raise LintError(_("Empty tag name"))
if type == "StartTag" and name in voidElements:
raise LintError(_("Void element reported as StartTag token: %(tag)s") % {"tag": name})
elif type == "EmptyTag" and name not in voidElements:
raise LintError(_("Non-void element reported as EmptyTag token: %(tag)s") % {"tag": token["name"]})
if type == "StartTag":
open_elements.append(name)
for name, value in token["data"]:
if not isinstance(name, str):
raise LintError(_("Attribute name is not a string: %(name)r") % {"name": name})
if not name:
raise LintError(_("Empty attribute name"))
if not isinstance(value, str):
raise LintError(_("Attribute value is not a string: %(value)r") % {"value": value})
if name in cdataElements:
contentModelFlag = "CDATA"
elif name in rcdataElements:
contentModelFlag = "RCDATA"
elif name == "plaintext":
contentModelFlag = "PLAINTEXT"
elif type == "EndTag":
name = token["name"]
if not isinstance(name, str):
raise LintError(_("Tag name is not a string: %(tag)r") % {"tag": name})
if not name:
raise LintError(_("Empty tag name"))
if name in voidElements:
raise LintError(_("Void element reported as EndTag token: %(tag)s") % {"tag": name})
start_name = open_elements.pop()
if start_name != name:
raise LintError(_("EndTag (%(end)s) does not match StartTag (%(start)s)") % {"end": name, "start": start_name})
contentModelFlag = "PCDATA"
elif type == "Comment":
if contentModelFlag != "PCDATA":
raise LintError(_("Comment not in PCDATA content model flag"))
elif type in ("Characters", "SpaceCharacters"):
data = token["data"]
if not isinstance(data, str):
raise LintError(_("Attribute name is not a string: %(name)r") % {"name": data})
if not data:
raise LintError(_("%(type)s token with empty data") % {"type": type})
if type == "SpaceCharacters":
data = data.strip(spaceCharacters)
if data:
raise LintError(_("Non-space character(s) found in SpaceCharacters token: %(token)r") % {"token": data})
elif type == "Doctype":
name = token["name"]
if contentModelFlag != "PCDATA":
raise LintError(_("Doctype not in PCDATA content model flag: %(name)s") % {"name": name})
if not isinstance(name, str):
raise LintError(_("Tag name is not a string: %(tag)r") % {"tag": name})
# XXX: what to do with token["data"] ?
elif type in ("ParseError", "SerializeError"):
pass
else:
raise LintError(_("Unknown token type: %(type)s") % {"type": type})
yield token
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