This file is indexed.

/usr/lib/python3/dist-packages/rcssmin.py is in python3-rcssmin 1.0.6-1+b1.

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
#!/usr/bin/env python
# -*- coding: ascii -*-
r"""
==============
 CSS Minifier
==============

CSS Minifier.

The minifier is based on the semantics of the `YUI compressor`_\\, which
itself is based on `the rule list by Isaac Schlueter`_\\.

:Copyright:

 Copyright 2011 - 2015
 Andr\xe9 Malo or his licensors, as applicable

:License:

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

This module is a re-implementation aiming for speed instead of maximum
compression, so it can be used at runtime (rather than during a preprocessing
step). RCSSmin does syntactical compression only (removing spaces, comments
and possibly semicolons). It does not provide semantic compression (like
removing empty blocks, collapsing redundant properties etc). It does, however,
support various CSS hacks (by keeping them working as intended).

Here's a feature list:

- Strings are kept, except that escaped newlines are stripped
- Space/Comments before the very end or before various characters are
  stripped: ``:{});=>],!`` (The colon (``:``) is a special case, a single
  space is kept if it's outside a ruleset.)
- Space/Comments at the very beginning or after various characters are
  stripped: ``{}(=:>[,!``
- Optional space after unicode escapes is kept, resp. replaced by a simple
  space
- whitespaces inside ``url()`` definitions are stripped
- Comments starting with an exclamation mark (``!``) can be kept optionally.
- All other comments and/or whitespace characters are replaced by a single
  space.
- Multiple consecutive semicolons are reduced to one
- The last semicolon within a ruleset is stripped
- CSS Hacks supported:

  - IE7 hack (``>/**/``)
  - Mac-IE5 hack (``/*\\*/.../**/``)
  - The boxmodelhack is supported naturally because it relies on valid CSS2
    strings
  - Between ``:first-line`` and the following comma or curly brace a space is
    inserted. (apparently it's needed for IE6)
  - Same for ``:first-letter``

rcssmin.c is a reimplementation of rcssmin.py in C and improves runtime up to
factor 100 or so (depending on the input). docs/BENCHMARKS in the source
distribution contains the details.

Both python 2 (>= 2.4) and python 3 are supported.

.. _YUI compressor: https://github.com/yui/yuicompressor/

.. _the rule list by Isaac Schlueter: https://github.com/isaacs/cssmin/
"""
if __doc__:
    # pylint: disable = W0622
    __doc__ = __doc__.encode('ascii').decode('unicode_escape')
__author__ = r"Andr\xe9 Malo".encode('ascii').decode('unicode_escape')
__docformat__ = "restructuredtext en"
__license__ = "Apache License, Version 2.0"
__version__ = '1.0.6'
__all__ = ['cssmin']

import re as _re


def _make_cssmin(python_only=False):
    """
    Generate CSS minifier.

    :Parameters:
      `python_only` : ``bool``
        Use only the python variant. If true, the c extension is not even
        tried to be loaded.

    :Return: Minifier
    :Rtype: ``callable``
    """
    # pylint: disable = R0912, R0914, W0612

    if not python_only:
        try:
            import _rcssmin
        except ImportError:
            pass
        else:
            return _rcssmin.cssmin

    nl = r'(?:[\n\f]|\r\n?)'  # pylint: disable = C0103
    spacechar = r'[\r\n\f\040\t]'

    unicoded = r'[0-9a-fA-F]{1,6}(?:[\040\n\t\f]|\r\n?)?'
    escaped = r'[^\n\r\f0-9a-fA-F]'
    escape = r'(?:\\(?:%(unicoded)s|%(escaped)s))' % locals()

    nmchar = r'[^\000-\054\056\057\072-\100\133-\136\140\173-\177]'
    # nmstart = r'[^\000-\100\133-\136\140\173-\177]'
    # ident = (r'(?:'
    #     r'-?(?:%(nmstart)s|%(escape)s)%(nmchar)s*(?:%(escape)s%(nmchar)s*)*'
    # r')') % locals()

    comment = r'(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)'

    # only for specific purposes. The bang is grouped:
    _bang_comment = r'(?:/\*(!?)[^*]*\*+(?:[^/*][^*]*\*+)*/)'

    string1 = \
        r'(?:\047[^\047\\\r\n\f]*(?:\\[^\r\n\f][^\047\\\r\n\f]*)*\047)'
    string2 = r'(?:"[^"\\\r\n\f]*(?:\\[^\r\n\f][^"\\\r\n\f]*)*")'
    strings = r'(?:%s|%s)' % (string1, string2)

    nl_string1 = \
        r'(?:\047[^\047\\\r\n\f]*(?:\\(?:[^\r]|\r\n?)[^\047\\\r\n\f]*)*\047)'
    nl_string2 = r'(?:"[^"\\\r\n\f]*(?:\\(?:[^\r]|\r\n?)[^"\\\r\n\f]*)*")'
    nl_strings = r'(?:%s|%s)' % (nl_string1, nl_string2)

    uri_nl_string1 = r'(?:\047[^\047\\]*(?:\\(?:[^\r]|\r\n?)[^\047\\]*)*\047)'
    uri_nl_string2 = r'(?:"[^"\\]*(?:\\(?:[^\r]|\r\n?)[^"\\]*)*")'
    uri_nl_strings = r'(?:%s|%s)' % (uri_nl_string1, uri_nl_string2)

    nl_escaped = r'(?:\\%(nl)s)' % locals()

    space = r'(?:%(spacechar)s|%(comment)s)' % locals()

    ie7hack = r'(?:>/\*\*/)'

    uri = (r'(?:'
        # noqa pylint: disable = C0330
        r'(?:[^\000-\040"\047()\\\177]*'
            r'(?:%(escape)s[^\000-\040"\047()\\\177]*)*)'
        r'(?:'
            r'(?:%(spacechar)s+|%(nl_escaped)s+)'
            r'(?:'
                r'(?:[^\000-\040"\047()\\\177]|%(escape)s|%(nl_escaped)s)'
                r'[^\000-\040"\047()\\\177]*'
                r'(?:%(escape)s[^\000-\040"\047()\\\177]*)*'
            r')+'
        r')*'
    r')') % locals()

    nl_unesc_sub = _re.compile(nl_escaped).sub

    uri_space_sub = _re.compile((
        r'(%(escape)s+)|%(spacechar)s+|%(nl_escaped)s+'
    ) % locals()).sub
    uri_space_subber = lambda m: m.groups()[0] or ''

    space_sub_simple = _re.compile((
        r'[\r\n\f\040\t;]+|(%(comment)s+)'
    ) % locals()).sub
    space_sub_banged = _re.compile((
        r'[\r\n\f\040\t;]+|(%(_bang_comment)s+)'
    ) % locals()).sub

    post_esc_sub = _re.compile(r'[\r\n\f\t]+').sub

    main_sub = _re.compile((
        # noqa pylint: disable = C0330
        r'([^\\"\047u>@\r\n\f\040\t/;:{}+]+)'             # 1
        r'|(?<=[{}(=:>[,!])(%(space)s+)'                  # 2
        r'|^(%(space)s+)'                                 # 3
        r'|(%(space)s+)(?=(([:{});=>\],!])|$)?)'          # 4, 5, 6
        r'|;(%(space)s*(?:;%(space)s*)*)(?=(\})?)'        # 7, 8
        r'|(\{)'                                          # 9
        r'|(\})'                                          # 10
        r'|(%(strings)s)'                                 # 11
        r'|(?<!%(nmchar)s)url\(%(spacechar)s*('           # 12
                r'%(uri_nl_strings)s'
                r'|%(uri)s'
            r')%(spacechar)s*\)'
        r'|(@(?:'                                         # 13
              r'[mM][eE][dD][iI][aA]'
              r'|[sS][uU][pP][pP][oO][rR][tT][sS]'
              r'|[dD][oO][cC][uU][mM][eE][nN][tT]'
              r'|(?:-(?:'
                  r'[wW][eE][bB][kK][iI][tT]|[mM][oO][zZ]|[oO]|[mM][sS]'
                r')-)?'
                r'[kK][eE][yY][fF][rR][aA][mM][eE][sS]'
            r'))(?!%(nmchar)s)'
        r'|(%(ie7hack)s)(%(space)s*)'                     # 14, 15
        r'|(:[fF][iI][rR][sS][tT]-[lL]'                   # 16
            r'(?:[iI][nN][eE]|[eE][tT][tT][eE][rR]))'
            r'(%(space)s*)(?=[{,])'                       # 17
        r'|(%(nl_strings)s)'                              # 18
        r'|(%(escape)s[^\\"\047u>@\r\n\f\040\t/;:{}+]*)'  # 19
    ) % locals()).sub

    # print main_sub.__self__.pattern

    def main_subber(keep_bang_comments):
        """ Make main subber """
        in_macie5, in_rule, at_group = [0], [0], [0]

        if keep_bang_comments:
            space_sub = space_sub_banged

            def space_subber(match):
                """ Space|Comment subber """
                if match.lastindex:
                    group1, group2 = match.group(1, 2)
                    if group2:
                        if group1.endswith(r'\*/'):
                            in_macie5[0] = 1
                        else:
                            in_macie5[0] = 0
                        return group1
                    elif group1:
                        if group1.endswith(r'\*/'):
                            if in_macie5[0]:
                                return ''
                            in_macie5[0] = 1
                            return r'/*\*/'
                        elif in_macie5[0]:
                            in_macie5[0] = 0
                            return '/**/'
                return ''
        else:
            space_sub = space_sub_simple

            def space_subber(match):
                """ Space|Comment subber """
                if match.lastindex:
                    if match.group(1).endswith(r'\*/'):
                        if in_macie5[0]:
                            return ''
                        in_macie5[0] = 1
                        return r'/*\*/'
                    elif in_macie5[0]:
                        in_macie5[0] = 0
                        return '/**/'
                return ''

        def fn_space_post(group):
            """ space with token after """
            if group(5) is None or (
                    group(6) == ':' and not in_rule[0] and not at_group[0]):
                return ' ' + space_sub(space_subber, group(4))
            return space_sub(space_subber, group(4))

        def fn_semicolon(group):
            """ ; handler """
            return ';' + space_sub(space_subber, group(7))

        def fn_semicolon2(group):
            """ ; handler """
            if in_rule[0]:
                return space_sub(space_subber, group(7))
            return ';' + space_sub(space_subber, group(7))

        def fn_open(_):
            """ { handler """
            if at_group[0]:
                at_group[0] -= 1
            else:
                in_rule[0] = 1
            return '{'

        def fn_close(_):
            """ } handler """
            in_rule[0] = 0
            return '}'

        def fn_at_group(group):
            """ @xxx group handler """
            at_group[0] += 1
            return group(13)

        def fn_ie7hack(group):
            """ IE7 Hack handler """
            if not in_rule[0] and not at_group[0]:
                in_macie5[0] = 0
                return group(14) + space_sub(space_subber, group(15))
            return '>' + space_sub(space_subber, group(15))

        table = (
            # noqa pylint: disable = C0330
            None,
            None,
            None,
            None,
            fn_space_post,                       # space with token after
            fn_space_post,                       # space with token after
            fn_space_post,                       # space with token after
            fn_semicolon,                        # semicolon
            fn_semicolon2,                       # semicolon
            fn_open,                             # {
            fn_close,                            # }
            lambda g: g(11),                     # string
            lambda g: 'url(%s)' % uri_space_sub(uri_space_subber, g(12)),
                                                 # url(...)
            fn_at_group,                         # @xxx expecting {...}
            None,
            fn_ie7hack,                          # ie7hack
            None,
            lambda g: g(16) + ' ' + space_sub(space_subber, g(17)),
                                                 # :first-line|letter followed
                                                 # by [{,] (apparently space
                                                 # needed for IE6)
            lambda g: nl_unesc_sub('', g(18)),   # nl_string
            lambda g: post_esc_sub(' ', g(19)),  # escape
        )

        def func(match):
            """ Main subber """
            idx, group = match.lastindex, match.group
            if idx > 3:
                return table[idx](group)

            # shortcuts for frequent operations below:
            elif idx == 1:     # not interesting
                return group(1)
            # else: # space with token before or at the beginning
            return space_sub(space_subber, group(idx))

        return func

    def cssmin(style, keep_bang_comments=False):  # pylint: disable = W0621
        """
        Minify CSS.

        :Parameters:
          `style` : ``str``
            CSS to minify

          `keep_bang_comments` : ``bool``
            Keep comments starting with an exclamation mark? (``/*!...*/``)

        :Return: Minified style
        :Rtype: ``str``
        """
        return main_sub(main_subber(keep_bang_comments), style)

    return cssmin

cssmin = _make_cssmin()


if __name__ == '__main__':
    def main():
        """ Main """
        import sys as _sys
        keep_bang_comments = (
            '-b' in _sys.argv[1:]
            or '-bp' in _sys.argv[1:]
            or '-pb' in _sys.argv[1:]
        )
        if '-p' in _sys.argv[1:] or '-bp' in _sys.argv[1:] \
                or '-pb' in _sys.argv[1:]:
            global cssmin  # pylint: disable = W0603
            cssmin = _make_cssmin(python_only=True)
        _sys.stdout.write(cssmin(
            _sys.stdin.read(), keep_bang_comments=keep_bang_comments
        ))
    main()