Gecko [ www.corporacionhdm.com.pe ]

Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
asyncio	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
collections	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
concurrent	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
config-3.8-x86_64-linux-gnu	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
ctypes	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
curses	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
dbm	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
distutils	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
email	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
encodings	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
ensurepip	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
html	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
http	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
importlib	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
json	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
lib-dynload	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
lib2to3	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
logging	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
multiprocessing	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
pydoc_data	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
site-packages	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
sqlite3	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
tkinter	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
turtledemo	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
unittest	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
urllib	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
venv	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
wsgiref	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
xml	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
xmlrpc	[ DIR ]	drwxr-xr-x	2024-03-05 23:45
LICENSE.txt	13.61 KB	-rw-r--r--	2023-06-06 13:32
__future__.py	5.03 KB	-rw-r--r--	2023-06-06 13:32
__phello__.foo.py	64 B	-rw-r--r--	2023-06-06 13:32
_bootlocale.py	1.76 KB	-rw-r--r--	2023-06-06 13:32
_collections_abc.py	25.49 KB	-rw-r--r--	2023-06-06 13:32
_compat_pickle.py	8.54 KB	-rw-r--r--	2023-06-06 13:32
_compression.py	5.21 KB	-rw-r--r--	2023-06-06 13:32
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_markupbase.py	14.26 KB	-rw-r--r--	2023-06-06 13:32
_osx_support.py	21.26 KB	-rw-r--r--	2023-06-06 13:32
_py_abc.py	6.04 KB	-rw-r--r--	2023-06-06 13:32
_pydecimal.py	223.31 KB	-rw-r--r--	2023-06-06 13:32
_pyio.py	90.99 KB	-rw-r--r--	2023-06-06 13:32
_sitebuiltins.py	3.04 KB	-rw-r--r--	2023-06-06 13:32
_strptime.py	24.68 KB	-rw-r--r--	2023-06-06 13:32
_sysconfigdata__linux_x86_64-linux-gnu.py	37.61 KB	-rw-r--r--	2023-10-17 18:12
_sysconfigdata_d_linux_x86_64-linux-gnu.py	37.34 KB	-rw-r--r--	2023-10-17 18:03
_threading_local.py	7.05 KB	-rw-r--r--	2023-06-06 13:32
_weakrefset.py	5.6 KB	-rw-r--r--	2023-06-06 13:32
abc.py	4.38 KB	-rw-r--r--	2023-06-06 13:32
aifc.py	32.04 KB	-rw-r--r--	2023-06-06 13:32
antigravity.py	477 B	-rw-r--r--	2023-06-06 13:32
argparse.py	93.76 KB	-rw-r--r--	2023-06-06 13:32
ast.py	18.78 KB	-rw-r--r--	2023-06-06 13:32
asynchat.py	11.06 KB	-rw-r--r--	2023-06-06 13:32
asyncore.py	19.62 KB	-rw-r--r--	2023-06-06 13:32
base64.py	19.9 KB	-rwxr-xr-x	2023-06-06 13:32
bdb.py	31.3 KB	-rw-r--r--	2023-06-06 13:32
binhex.py	13.63 KB	-rw-r--r--	2023-06-06 13:32
bisect.py	2.16 KB	-rw-r--r--	2023-06-06 13:32
bz2.py	12.26 KB	-rw-r--r--	2023-06-06 13:32
cProfile.py	6.85 KB	-rwxr-xr-x	2023-06-06 13:32
calendar.py	24.25 KB	-rw-r--r--	2023-06-06 13:32
cgi.py	33.14 KB	-rwxr-xr-x	2023-10-17 18:02
cgitb.py	11.81 KB	-rw-r--r--	2023-06-06 13:32
chunk.py	5.31 KB	-rw-r--r--	2023-06-06 13:32
cmd.py	14.51 KB	-rw-r--r--	2023-06-06 13:32
code.py	10.37 KB	-rw-r--r--	2023-06-06 13:32
codecs.py	35.81 KB	-rw-r--r--	2023-06-06 13:32
codeop.py	6.18 KB	-rw-r--r--	2023-06-06 13:32
colorsys.py	3.97 KB	-rw-r--r--	2023-06-06 13:32
compileall.py	13.36 KB	-rw-r--r--	2023-06-06 13:32
configparser.py	53.1 KB	-rw-r--r--	2023-06-06 13:32
contextlib.py	24.41 KB	-rw-r--r--	2023-06-06 13:32
contextvars.py	129 B	-rw-r--r--	2023-06-06 13:32
copy.py	8.46 KB	-rw-r--r--	2023-06-06 13:32
copyreg.py	6.97 KB	-rw-r--r--	2023-06-06 13:32
crypt.py	3.53 KB	-rw-r--r--	2023-06-06 13:32
csv.py	15.77 KB	-rw-r--r--	2023-06-06 13:32
dataclasses.py	48.8 KB	-rw-r--r--	2023-06-06 13:32
datetime.py	86.22 KB	-rw-r--r--	2023-06-06 13:32
decimal.py	320 B	-rw-r--r--	2023-06-06 13:32
difflib.py	82.09 KB	-rw-r--r--	2023-06-06 13:32
dis.py	20.09 KB	-rw-r--r--	2023-06-06 13:32
doctest.py	102.09 KB	-rw-r--r--	2023-06-06 13:32
dummy_threading.py	2.75 KB	-rw-r--r--	2023-06-06 13:32
enum.py	37.24 KB	-rw-r--r--	2023-06-06 13:32
filecmp.py	9.6 KB	-rw-r--r--	2023-06-06 13:32
fileinput.py	14.36 KB	-rw-r--r--	2023-06-06 13:32
fnmatch.py	3.98 KB	-rw-r--r--	2023-06-06 13:32
formatter.py	14.79 KB	-rw-r--r--	2023-06-06 13:32
fractions.py	23.76 KB	-rw-r--r--	2023-06-06 13:32
ftplib.py	34.31 KB	-rw-r--r--	2023-06-06 13:32
functools.py	36.53 KB	-rw-r--r--	2023-06-06 13:32
genericpath.py	4.86 KB	-rw-r--r--	2023-06-06 13:32
getopt.py	7.31 KB	-rw-r--r--	2023-06-06 13:32
getpass.py	5.85 KB	-rw-r--r--	2023-06-06 13:32
gettext.py	26.5 KB	-rw-r--r--	2023-06-06 13:32
glob.py	5.56 KB	-rw-r--r--	2023-06-06 13:32
gzip.py	20.91 KB	-rw-r--r--	2023-06-06 13:32
hashlib.py	8.14 KB	-rw-r--r--	2023-10-17 18:02
heapq.py	22.34 KB	-rw-r--r--	2023-06-06 13:32
hmac.py	7.67 KB	-rw-r--r--	2023-10-17 18:02
imaplib.py	52.35 KB	-rw-r--r--	2023-06-06 13:32
imghdr.py	3.72 KB	-rw-r--r--	2023-06-06 13:32
imp.py	10.29 KB	-rw-r--r--	2023-06-06 13:32
inspect.py	115.77 KB	-rw-r--r--	2023-06-06 13:32
io.py	3.46 KB	-rw-r--r--	2023-06-06 13:32
ipaddress.py	69.96 KB	-rw-r--r--	2023-06-06 13:32
keyword.py	945 B	-rw-r--r--	2023-06-06 13:32
linecache.py	5.21 KB	-rw-r--r--	2023-06-06 13:32
locale.py	76.36 KB	-rw-r--r--	2023-06-06 13:32
lzma.py	12.68 KB	-rw-r--r--	2023-06-06 13:32
mailbox.py	76.82 KB	-rw-r--r--	2023-06-06 13:32
mailcap.py	8.85 KB	-rw-r--r--	2023-06-06 13:32
mimetypes.py	21.16 KB	-rw-r--r--	2023-06-06 13:32
modulefinder.py	23.86 KB	-rw-r--r--	2023-06-06 13:32
netrc.py	5.44 KB	-rw-r--r--	2023-06-06 13:32
nntplib.py	42.25 KB	-rw-r--r--	2023-06-06 13:32
ntpath.py	27.08 KB	-rw-r--r--	2023-06-06 13:32
nturl2path.py	2.82 KB	-rw-r--r--	2023-06-06 13:32
numbers.py	10 KB	-rw-r--r--	2023-06-06 13:32
opcode.py	5.67 KB	-rw-r--r--	2023-06-06 13:32
operator.py	10.46 KB	-rw-r--r--	2023-06-06 13:32
optparse.py	58.95 KB	-rw-r--r--	2023-06-06 13:32
os.py	38.08 KB	-rw-r--r--	2023-06-06 13:32
pathlib.py	51.38 KB	-rw-r--r--	2023-06-06 13:32
pdb.py	61.27 KB	-rwxr-xr-x	2023-06-06 13:32
pickle.py	62.96 KB	-rw-r--r--	2023-06-06 13:32
pickletools.py	91.29 KB	-rw-r--r--	2023-06-06 13:32
pipes.py	8.71 KB	-rw-r--r--	2023-06-06 13:32
pkgutil.py	21 KB	-rw-r--r--	2023-06-06 13:32
platform.py	39.48 KB	-rwxr-xr-x	2023-06-06 13:32
plistlib.py	31.46 KB	-rw-r--r--	2023-06-06 13:32
poplib.py	14.72 KB	-rw-r--r--	2023-06-06 13:32
posixpath.py	15.26 KB	-rw-r--r--	2023-06-06 13:32
pprint.py	20.98 KB	-rw-r--r--	2023-06-06 13:32
profile.py	22.99 KB	-rwxr-xr-x	2023-06-06 13:32
pstats.py	26.7 KB	-rw-r--r--	2023-06-06 13:32
pty.py	4.69 KB	-rw-r--r--	2023-06-06 13:32
py_compile.py	8.01 KB	-rw-r--r--	2023-10-17 18:02
pyclbr.py	14.9 KB	-rw-r--r--	2023-06-06 13:32
pydoc.py	104.2 KB	-rw-r--r--	2023-10-17 18:12
queue.py	11.09 KB	-rw-r--r--	2023-06-06 13:32
quopri.py	7.08 KB	-rwxr-xr-x	2023-06-06 13:32
random.py	28.13 KB	-rw-r--r--	2023-06-06 13:32
re.py	15.49 KB	-rw-r--r--	2023-06-06 13:32
reprlib.py	5.14 KB	-rw-r--r--	2023-06-06 13:32
rlcompleter.py	6.93 KB	-rw-r--r--	2023-06-06 13:32
runpy.py	11.77 KB	-rw-r--r--	2023-06-06 13:32
sched.py	6.29 KB	-rw-r--r--	2023-06-06 13:32
secrets.py	1.99 KB	-rw-r--r--	2023-06-06 13:32
selectors.py	18.13 KB	-rw-r--r--	2023-06-06 13:32
shelve.py	8.33 KB	-rw-r--r--	2023-06-06 13:32
shlex.py	13.01 KB	-rw-r--r--	2023-06-06 13:32
shutil.py	50.55 KB	-rw-r--r--	2023-06-06 13:32
signal.py	2.22 KB	-rw-r--r--	2023-06-06 13:32
site.py	21.33 KB	-rw-r--r--	2023-10-17 18:02
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smtplib.py	43.95 KB	-rwxr-xr-x	2023-06-06 13:32
sndhdr.py	6.93 KB	-rw-r--r--	2023-06-06 13:32
socket.py	34.42 KB	-rw-r--r--	2023-06-06 13:32
socketserver.py	26.66 KB	-rw-r--r--	2023-06-06 13:32
sre_compile.py	26.07 KB	-rw-r--r--	2023-06-06 13:32
sre_constants.py	6.99 KB	-rw-r--r--	2023-06-06 13:32
sre_parse.py	39.29 KB	-rw-r--r--	2023-06-06 13:32
ssl.py	49.57 KB	-rw-r--r--	2023-06-06 13:32
stat.py	5.36 KB	-rw-r--r--	2023-06-06 13:32
statistics.py	38.76 KB	-rw-r--r--	2023-06-06 13:32
string.py	10.29 KB	-rw-r--r--	2023-06-06 13:32
stringprep.py	12.61 KB	-rw-r--r--	2023-06-06 13:32
struct.py	257 B	-rw-r--r--	2023-06-06 13:32
subprocess.py	76.42 KB	-rw-r--r--	2023-06-06 13:32
sunau.py	17.94 KB	-rw-r--r--	2023-06-06 13:32
symbol.py	2.06 KB	-rw-r--r--	2023-10-17 18:04
symtable.py	7.83 KB	-rw-r--r--	2023-06-06 13:32
sysconfig.py	24.31 KB	-rw-r--r--	2023-10-17 18:12
tabnanny.py	11.14 KB	-rwxr-xr-x	2023-06-06 13:32
tarfile.py	103.98 KB	-rwxr-xr-x	2023-10-17 18:02
telnetlib.py	22.71 KB	-rw-r--r--	2023-06-06 13:32
tempfile.py	26.89 KB	-rw-r--r--	2023-06-06 13:32
textwrap.py	18.95 KB	-rw-r--r--	2023-06-06 13:32
this.py	1003 B	-rw-r--r--	2023-06-06 13:32
threading.py	49.63 KB	-rw-r--r--	2023-06-06 13:32
timeit.py	13.16 KB	-rwxr-xr-x	2023-06-06 13:32
token.py	2.31 KB	-rw-r--r--	2023-06-06 13:32
tokenize.py	25.24 KB	-rw-r--r--	2023-06-06 13:32
trace.py	29.17 KB	-rwxr-xr-x	2023-06-06 13:32
traceback.py	23.06 KB	-rw-r--r--	2023-06-06 13:32
tracemalloc.py	16.68 KB	-rw-r--r--	2023-06-06 13:32
tty.py	879 B	-rw-r--r--	2023-06-06 13:32
turtle.py	140.35 KB	-rw-r--r--	2023-06-06 13:32
types.py	9.49 KB	-rw-r--r--	2023-06-06 13:32
typing.py	67.35 KB	-rw-r--r--	2023-06-06 13:32
uu.py	7.11 KB	-rw-r--r--	2023-10-17 18:12
uuid.py	29.8 KB	-rw-r--r--	2023-10-17 18:02
warnings.py	19.23 KB	-rw-r--r--	2023-06-06 13:32
wave.py	17.8 KB	-rw-r--r--	2023-06-06 13:32
weakref.py	20.89 KB	-rw-r--r--	2023-06-06 13:32
webbrowser.py	23.52 KB	-rwxr-xr-x	2023-06-06 13:32
xdrlib.py	5.77 KB	-rw-r--r--	2023-06-06 13:32
zipapp.py	7.36 KB	-rw-r--r--	2023-06-06 13:32
zipfile.py	85.67 KB	-rw-r--r--	2023-06-06 13:32
zipimport.py	30.04 KB	-rw-r--r--	2023-06-06 13:32

Rename

"""Shared support for scanning document type declarations in HTML and XHTML.

This module is used as a foundation for the html.parser module.  It has no
documented public API and should not be used directly.

"""

import re

_declname_match = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9]*\s*').match
_declstringlit_match = re.compile(r'(\'[^\']*\'|"[^"]*")\s*').match
_commentclose = re.compile(r'--\s*>')
_markedsectionclose = re.compile(r']\s*]\s*>')

# An analysis of the MS-Word extensions is available at
# http://www.planetpublish.com/xmlarena/xap/Thursday/WordtoXML.pdf

_msmarkedsectionclose = re.compile(r']\s*>')

del re

class ParserBase:
    """Parser base class which provides some common support methods used
    by the SGML/HTML and XHTML parsers."""

def __init__(self):
        if self.__class__ is ParserBase:
            raise RuntimeError(
                "_markupbase.ParserBase must be subclassed")

def error(self, message):
        raise NotImplementedError(
            "subclasses of ParserBase must override error()")

def reset(self):
        self.lineno = 1
        self.offset = 0

def getpos(self):
        """Return current line number and offset."""
        return self.lineno, self.offset

# Internal -- update line number and offset.  This should be
    # called for each piece of data exactly once, in order -- in other
    # words the concatenation of all the input strings to this
    # function should be exactly the entire input.
    def updatepos(self, i, j):
        if i >= j:
            return j
        rawdata = self.rawdata
        nlines = rawdata.count("\n", i, j)
        if nlines:
            self.lineno = self.lineno + nlines
            pos = rawdata.rindex("\n", i, j) # Should not fail
            self.offset = j-(pos+1)
        else:
            self.offset = self.offset + j-i
        return j

_decl_otherchars = ''

# Internal -- parse declaration (for use by subclasses).
    def parse_declaration(self, i):
        # This is some sort of declaration; in "HTML as
        # deployed," this should only be the document type
        # declaration ("<!DOCTYPE html...>").
        # ISO 8879:1986, however, has more complex
        # declaration syntax for elements in <!...>, including:
        # --comment--
        # [marked section]
        # name in the following list: ENTITY, DOCTYPE, ELEMENT,
        # ATTLIST, NOTATION, SHORTREF, USEMAP,
        # LINKTYPE, LINK, IDLINK, USELINK, SYSTEM
        rawdata = self.rawdata
        j = i + 2
        assert rawdata[i:j] == "<!", "unexpected call to parse_declaration"
        if rawdata[j:j+1] == ">":
            # the empty comment <!>
            return j + 1
        if rawdata[j:j+1] in ("-", ""):
            # Start of comment followed by buffer boundary,
            # or just a buffer boundary.
            return -1
        # A simple, practical version could look like: ((name|stringlit) S*) + '>'
        n = len(rawdata)
        if rawdata[j:j+2] == '--': #comment
            # Locate --.*-- as the body of the comment
            return self.parse_comment(i)
        elif rawdata[j] == '[': #marked section
            # Locate [statusWord [...arbitrary SGML...]] as the body of the marked section
            # Where statusWord is one of TEMP, CDATA, IGNORE, INCLUDE, RCDATA
            # Note that this is extended by Microsoft Office "Save as Web" function
            # to include [if...] and [endif].
            return self.parse_marked_section(i)
        else: #all other declaration elements
            decltype, j = self._scan_name(j, i)
        if j < 0:
            return j
        if decltype == "doctype":
            self._decl_otherchars = ''
        while j < n:
            c = rawdata[j]
            if c == ">":
                # end of declaration syntax
                data = rawdata[i+2:j]
                if decltype == "doctype":
                    self.handle_decl(data)
                else:
                    # According to the HTML5 specs sections "8.2.4.44 Bogus
                    # comment state" and "8.2.4.45 Markup declaration open
                    # state", a comment token should be emitted.
                    # Calling unknown_decl provides more flexibility though.
                    self.unknown_decl(data)
                return j + 1
            if c in "\"'":
                m = _declstringlit_match(rawdata, j)
                if not m:
                    return -1 # incomplete
                j = m.end()
            elif c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ":
                name, j = self._scan_name(j, i)
            elif c in self._decl_otherchars:
                j = j + 1
            elif c == "[":
                # this could be handled in a separate doctype parser
                if decltype == "doctype":
                    j = self._parse_doctype_subset(j + 1, i)
                elif decltype in {"attlist", "linktype", "link", "element"}:
                    # must tolerate []'d groups in a content model in an element declaration
                    # also in data attribute specifications of attlist declaration
                    # also link type declaration subsets in linktype declarations
                    # also link attribute specification lists in link declarations
                    self.error("unsupported '[' char in %s declaration" % decltype)
                else:
                    self.error("unexpected '[' char in declaration")
            else:
                self.error(
                    "unexpected %r char in declaration" % rawdata[j])
            if j < 0:
                return j
        return -1 # incomplete

# Internal -- parse a marked section
    # Override this to handle MS-word extension syntax <![if word]>content<![endif]>
    def parse_marked_section(self, i, report=1):
        rawdata= self.rawdata
        assert rawdata[i:i+3] == '<![', "unexpected call to parse_marked_section()"
        sectName, j = self._scan_name( i+3, i )
        if j < 0:
            return j
        if sectName in {"temp", "cdata", "ignore", "include", "rcdata"}:
            # look for standard ]]> ending
            match= _markedsectionclose.search(rawdata, i+3)
        elif sectName in {"if", "else", "endif"}:
            # look for MS Office ]> ending
            match= _msmarkedsectionclose.search(rawdata, i+3)
        else:
            self.error('unknown status keyword %r in marked section' % rawdata[i+3:j])
        if not match:
            return -1
        if report:
            j = match.start(0)
            self.unknown_decl(rawdata[i+3: j])
        return match.end(0)

# Internal -- parse comment, return length or -1 if not terminated
    def parse_comment(self, i, report=1):
        rawdata = self.rawdata
        if rawdata[i:i+4] != '<!--':
            self.error('unexpected call to parse_comment()')
        match = _commentclose.search(rawdata, i+4)
        if not match:
            return -1
        if report:
            j = match.start(0)
            self.handle_comment(rawdata[i+4: j])
        return match.end(0)

# Internal -- scan past the internal subset in a <!DOCTYPE declaration,
    # returning the index just past any whitespace following the trailing ']'.
    def _parse_doctype_subset(self, i, declstartpos):
        rawdata = self.rawdata
        n = len(rawdata)
        j = i
        while j < n:
            c = rawdata[j]
            if c == "<":
                s = rawdata[j:j+2]
                if s == "<":
                    # end of buffer; incomplete
                    return -1
                if s != "<!":
                    self.updatepos(declstartpos, j + 1)
                    self.error("unexpected char in internal subset (in %r)" % s)
                if (j + 2) == n:
                    # end of buffer; incomplete
                    return -1
                if (j + 4) > n:
                    # end of buffer; incomplete
                    return -1
                if rawdata[j:j+4] == "<!--":
                    j = self.parse_comment(j, report=0)
                    if j < 0:
                        return j
                    continue
                name, j = self._scan_name(j + 2, declstartpos)
                if j == -1:
                    return -1
                if name not in {"attlist", "element", "entity", "notation"}:
                    self.updatepos(declstartpos, j + 2)
                    self.error(
                        "unknown declaration %r in internal subset" % name)
                # handle the individual names
                meth = getattr(self, "_parse_doctype_" + name)
                j = meth(j, declstartpos)
                if j < 0:
                    return j
            elif c == "%":
                # parameter entity reference
                if (j + 1) == n:
                    # end of buffer; incomplete
                    return -1
                s, j = self._scan_name(j + 1, declstartpos)
                if j < 0:
                    return j
                if rawdata[j] == ";":
                    j = j + 1
            elif c == "]":
                j = j + 1
                while j < n and rawdata[j].isspace():
                    j = j + 1
                if j < n:
                    if rawdata[j] == ">":
                        return j
                    self.updatepos(declstartpos, j)
                    self.error("unexpected char after internal subset")
                else:
                    return -1
            elif c.isspace():
                j = j + 1
            else:
                self.updatepos(declstartpos, j)
                self.error("unexpected char %r in internal subset" % c)
        # end of buffer reached
        return -1

# Internal -- scan past <!ELEMENT declarations
    def _parse_doctype_element(self, i, declstartpos):
        name, j = self._scan_name(i, declstartpos)
        if j == -1:
            return -1
        # style content model; just skip until '>'
        rawdata = self.rawdata
        if '>' in rawdata[j:]:
            return rawdata.find(">", j) + 1
        return -1

# Internal -- scan past <!ATTLIST declarations
    def _parse_doctype_attlist(self, i, declstartpos):
        rawdata = self.rawdata
        name, j = self._scan_name(i, declstartpos)
        c = rawdata[j:j+1]
        if c == "":
            return -1
        if c == ">":
            return j + 1
        while 1:
            # scan a series of attribute descriptions; simplified:
            #   name type [value] [#constraint]
            name, j = self._scan_name(j, declstartpos)
            if j < 0:
                return j
            c = rawdata[j:j+1]
            if c == "":
                return -1
            if c == "(":
                # an enumerated type; look for ')'
                if ")" in rawdata[j:]:
                    j = rawdata.find(")", j) + 1
                else:
                    return -1
                while rawdata[j:j+1].isspace():
                    j = j + 1
                if not rawdata[j:]:
                    # end of buffer, incomplete
                    return -1
            else:
                name, j = self._scan_name(j, declstartpos)
            c = rawdata[j:j+1]
            if not c:
                return -1
            if c in "'\"":
                m = _declstringlit_match(rawdata, j)
                if m:
                    j = m.end()
                else:
                    return -1
                c = rawdata[j:j+1]
                if not c:
                    return -1
            if c == "#":
                if rawdata[j:] == "#":
                    # end of buffer
                    return -1
                name, j = self._scan_name(j + 1, declstartpos)
                if j < 0:
                    return j
                c = rawdata[j:j+1]
                if not c:
                    return -1
            if c == '>':
                # all done
                return j + 1

# Internal -- scan past <!NOTATION declarations
    def _parse_doctype_notation(self, i, declstartpos):
        name, j = self._scan_name(i, declstartpos)
        if j < 0:
            return j
        rawdata = self.rawdata
        while 1:
            c = rawdata[j:j+1]
            if not c:
                # end of buffer; incomplete
                return -1
            if c == '>':
                return j + 1
            if c in "'\"":
                m = _declstringlit_match(rawdata, j)
                if not m:
                    return -1
                j = m.end()
            else:
                name, j = self._scan_name(j, declstartpos)
                if j < 0:
                    return j

# Internal -- scan past <!ENTITY declarations
    def _parse_doctype_entity(self, i, declstartpos):
        rawdata = self.rawdata
        if rawdata[i:i+1] == "%":
            j = i + 1
            while 1:
                c = rawdata[j:j+1]
                if not c:
                    return -1
                if c.isspace():
                    j = j + 1
                else:
                    break
        else:
            j = i
        name, j = self._scan_name(j, declstartpos)
        if j < 0:
            return j
        while 1:
            c = self.rawdata[j:j+1]
            if not c:
                return -1
            if c in "'\"":
                m = _declstringlit_match(rawdata, j)
                if m:
                    j = m.end()
                else:
                    return -1    # incomplete
            elif c == ">":
                return j + 1
            else:
                name, j = self._scan_name(j, declstartpos)
                if j < 0:
                    return j

# Internal -- scan a name token and the new position and the token, or
    # return -1 if we've reached the end of the buffer.
    def _scan_name(self, i, declstartpos):
        rawdata = self.rawdata
        n = len(rawdata)
        if i == n:
            return None, -1
        m = _declname_match(rawdata, i)
        if m:
            s = m.group()
            name = s.strip()
            if (i + len(s)) == n:
                return None, -1  # end of buffer
            return name.lower(), m.end()
        else:
            self.updatepos(declstartpos, i)
            self.error("expected name token at %r"
                       % rawdata[declstartpos:declstartpos+20])

# To be overridden -- handlers for unknown objects
    def unknown_decl(self, data):
        pass