This file is indexed.

/usr/lib/python3/dist-packages/chameleon/utils.py is in python3-chameleon 2.24-1.

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
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
import os
import re
import sys
import codecs
import logging

from copy import copy

version = sys.version_info[:3]

try:
    import ast as _ast
except ImportError:
    from chameleon import ast25 as _ast


class ASTProxy(object):
    aliases = {
        # Python 3.3
        'TryExcept': 'Try',
        'TryFinally': 'Try',
        }

    def __getattr__(self, name):
        if name.startswith('__'):
            raise AttributeError(name)
        return _ast.__dict__.get(name) or getattr(_ast, self.aliases[name])


ast = ASTProxy()

log = logging.getLogger('chameleon.utils')

# Python 2
if version < (3, 0, 0):
    import htmlentitydefs
    import __builtin__ as builtins

    from .py25 import raise_with_traceback

    chr = unichr
    native_string = str
    decode_string = unicode
    encode_string = str
    unicode_string = unicode
    string_type = basestring
    byte_string = str

    def safe_native(s, encoding='utf-8'):
        if not isinstance(s, unicode):
            s = decode_string(s, encoding, 'replace')

        return s.encode(encoding)

# Python 3
else:
    from html import entities as htmlentitydefs
    import builtins

    byte_string = bytes
    string_type = str
    native_string = str
    decode_string = bytes.decode
    encode_string = lambda s: bytes(s, 'utf-8')
    unicode_string = str

    def safe_native(s, encoding='utf-8'):
        if not isinstance(s, str):
            s = decode_string(s, encoding, 'replace')

        return s

    def raise_with_traceback(exc, tb):
        exc.__traceback__ = tb
        raise exc

def text_(s, encoding='latin-1', errors='strict'):
    """ If ``s`` is an instance of ``byte_string``, return
    ``s.decode(encoding, errors)``, otherwise return ``s``"""
    if isinstance(s, byte_string):
        return s.decode(encoding, errors)
    return s

entity_re = re.compile(r'&(#?)(x?)(\d{1,5}|\w{1,8});')

module_cache = {}

xml_prefixes = (
    (codecs.BOM_UTF8, 'utf-8-sig'),
    (codecs.BOM_UTF16_BE, 'utf-16-be'),
    (codecs.BOM_UTF16_LE, 'utf-16-le'),
    (codecs.BOM_UTF16, 'utf-16'),
    (codecs.BOM_UTF32_BE, 'utf-32-be'),
    (codecs.BOM_UTF32_LE, 'utf-32-le'),
    (codecs.BOM_UTF32, 'utf-32'),
    )


def _has_encoding(encoding):
    try:
        "".encode(encoding)
    except LookupError:
        return False
    else:
        return True


# Precomputed prefix table
_xml_prefixes = tuple(
    (bom, str('<?xml').encode(encoding), encoding)
    for bom, encoding in reversed(xml_prefixes)
    if _has_encoding(encoding)
    )

_xml_decl = encode_string("<?xml")

RE_META = re.compile(
    r'\s*<meta\s+http-equiv=["\']?Content-Type["\']?'
    r'\s+content=["\']?([^;]+);\s*charset=([^"\']+)["\']?\s*/?\s*>\s*',
    re.IGNORECASE
    )

RE_ENCODING = re.compile(
    r'encoding\s*=\s*(?:"|\')(?P<encoding>[\w\-]+)(?:"|\')'.encode('ascii'),
    re.IGNORECASE
    )


def read_encoded(data):
    return read_bytes(data, "utf-8")[0]


def read_bytes(body, default_encoding):
    for bom, prefix, encoding in _xml_prefixes:
        if body.startswith(bom):
            document = body.decode(encoding)
            return document, encoding, \
                   "text/xml" if document.startswith("<?xml") else None

        if prefix != encode_string('<?xml') and body.startswith(prefix):
            return body.decode(encoding), encoding, "text/xml"

    if body.startswith(_xml_decl):
        content_type = "text/xml"

        encoding = read_xml_encoding(body) or default_encoding
    else:
        content_type, encoding = detect_encoding(body, default_encoding)

    return body.decode(encoding), encoding, content_type


def detect_encoding(body, default_encoding):
    if not isinstance(body, str):
        body = body.decode('ascii', 'ignore')

    match = RE_META.search(body)
    if match is not None:
        return match.groups()

    return None, default_encoding


def read_xml_encoding(body):
    if body.startswith('<?xml'.encode('ascii')):
        match = RE_ENCODING.search(body)
        if match is not None:
            return match.group('encoding').decode('ascii')


def mangle(filename):
    """Mangles template filename into top-level Python module name.

    >>> mangle('hello_world.pt')
    'hello_world'

    >>> mangle('foo.bar.baz.pt')
    'foo_bar_baz'

    >>> mangle('foo-bar-baz.pt')
    'foo_bar_baz'

    """

    base, ext = os.path.splitext(filename)
    return base.replace('.', '_').replace('-', '_')


def char2entity(c):
    cp = ord(c)
    name = htmlentitydefs.codepoint2name.get(cp)
    return '&%s;' % name if name is not None else '&#%d;' % cp


def substitute_entity(match, n2cp=htmlentitydefs.name2codepoint):
    ent = match.group(3)

    if match.group(1) == "#":
        if match.group(2) == '':
            return chr(int(ent))
        elif match.group(2) == 'x':
            return chr(int('0x' + ent, 16))
    else:
        cp = n2cp.get(ent)

        if cp:
            return chr(cp)
        else:
            return match.group()


def create_formatted_exception(exc, cls, formatter, base=Exception):
    try:
        try:
            new = type(cls.__name__, (cls, base), {
                '__str__': formatter,
                '__new__': BaseException.__new__,
                '__module__': cls.__module__,
                })
        except TypeError:
            new = cls

        try:
            inst = BaseException.__new__(new)
        except TypeError:
            inst = cls.__new__(new)

        BaseException.__init__(inst, *exc.args)
        inst.__dict__ = exc.__dict__

        return inst
    except ValueError:
        name = type(exc).__name__
        log.warn("Unable to copy exception of type '%s'." % name)
        raise TypeError(exc)


def unescape(string):
    for name in ('lt', 'gt', 'quot'):
        cp = htmlentitydefs.name2codepoint[name]
        string = string.replace('&%s;' % name, chr(cp))

    return string


_concat = unicode_string("").join


def join(stream):
    """Concatenate stream.

    >>> print(join(('Hello', ' ', 'world')))
    Hello world

    >>> join(('Hello', 0))
    Traceback (most recent call last):
     ...
    TypeError: ... expected ...

    """

    try:
        return _concat(stream)
    except:
        # Loop through stream and coerce each element into unicode;
        # this should raise an exception
        for element in stream:
            unicode_string(element)

        # In case it didn't, re-raise the original exception
        raise


def decode_htmlentities(string):
    """
    >>> native_string(decode_htmlentities('&amp;amp;'))
    '&amp;'

    """

    decoded = entity_re.subn(substitute_entity, string)[0]

    # preserve input token data
    return string.replace(string, decoded)


# Taken from zope.dottedname
def _resolve_dotted(name, module=None):
    name = name.split('.')
    if not name[0]:
        if module is None:
            raise ValueError("relative name without base module")
        module = module.split('.')
        name.pop(0)
        while not name[0]:
            module.pop()
            name.pop(0)
        name = module + name

    used = name.pop(0)
    found = __import__(used)
    for n in name:
        used += '.' + n
        try:
            found = getattr(found, n)
        except AttributeError:
            __import__(used)
            found = getattr(found, n)

    return found


def resolve_dotted(dotted):
    if not dotted in module_cache:
        resolved = _resolve_dotted(dotted)
        module_cache[dotted] = resolved
    return module_cache[dotted]


def limit_string(s, max_length=53):
    if len(s) > max_length:
        return s[:max_length - 3] + '...'

    return s


def format_kwargs(kwargs):
    items = []
    for name, value in kwargs.items():
        if isinstance(value, string_type):
            short = limit_string(value)
            items.append((name, short.replace('\n', '\\n')))
        elif isinstance(value, (int, float)):
            items.append((name, value))
        elif isinstance(value, dict):
            items.append((name, '{...} (%d)' % len(value)))
        else:
            items.append((name,
                "<%s %s at %s>" % (
                    type(value).__name__,
                    getattr(value, '__name__', "-"),
                    hex(abs(id(value))))))

    return ["%s: %s" % item for item in items]


class callablestr(str):
    __slots__ = ()

    def __call__(self):
        return self


class callableint(int):
    __slots__ = ()

    def __call__(self):
        return self


class descriptorstr(object):
    __slots__ = "function", "__name__"

    def __init__(self, function):
        self.function = function
        self.__name__ = function.__name__

    def __get__(self, context, cls):
        return callablestr(self.function(context))


class descriptorint(object):
    __slots__ = "function", "__name__"

    def __init__(self, function):
        self.function = function
        self.__name__ = function.__name__

    def __get__(self, context, cls):
        return callableint(self.function(context))


class DebuggingOutputStream(list):
    def append(self, value):
        if not isinstance(value, string_type):
            raise TypeError(value)

        unicode_string(value)
        list.append(self, value)


class Scope(dict):
    set_local = setLocal = dict.__setitem__

    __slots__ = "set_global",

    def __new__(cls, *args):
        inst = dict.__new__(cls, *args)
        inst.set_global = inst.__setitem__
        return inst

    def __getitem__(self, key):
        try:
            return dict.__getitem__(self, key)
        except KeyError:
            raise NameError(key)

    @property
    def vars(self):
        return self

    def copy(self):
        inst = Scope(self)
        inst.set_global = self.set_global
        return inst


class ListDictProxy(object):
    def __init__(self, l):
        self._l = l

    def get(self, key):
        return self._l[-1].get(key)


class Markup(unicode_string):
    """Wraps a string to always render as structure.

    >>> Markup('<br />')
    s'<br />'
    """

    def __html__(self):
        return unicode_string(self)

    def __repr__(self):
        return "s'%s'" % self