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1# Copyright (C) 2013 Google Inc. All rights reserved.
2#
3# Redistribution and use in source and binary forms, with or without
4# modification, are permitted provided that the following conditions are
5# met:
6#
7#     * Redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer.
9#     * Redistributions in binary form must reproduce the above
10# copyright notice, this list of conditions and the following disclaimer
11# in the documentation and/or other materials provided with the
12# distribution.
13#     * Neither the name of Google Inc. nor the names of its
14# contributors may be used to endorse or promote products derived from
15# this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29import os.path
30import re
31
32
33ACRONYMS = [
34    'CSSOM',
35    'CSS',
36    'DNS',
37    'FE',
38    'FTP',
39    'HTML',
40    'IME',
41    'JS',
42    'SVG',
43    'URL',
44    'WOFF',
45    'XML',
46    'XSLT',
47    'XSS',
48]
49
50
51def lower_first(name):
52    """Return name with first letter or initial acronym lowercased.
53
54    E.g., 'SetURL' becomes 'setURL', but 'URLFoo' becomes 'urlFoo'.
55    """
56    for acronym in ACRONYMS:
57        if name.startswith(acronym):
58            return name.replace(acronym, acronym.lower(), 1)
59    return name[0].lower() + name[1:]
60
61
62def upper_first(name):
63    """Return name with first letter or initial acronym uppercased."""
64    for acronym in ACRONYMS:
65        if name.startswith(acronym.lower()):
66            return name.replace(acronym.lower(), acronym, 1)
67    return _upper_first(name)
68
69
70def _upper_first(name):
71    """Return name with first letter uppercased."""
72    if not name:
73        return ''
74    return name[0].upper() + name[1:]
75
76
77def to_macro_style(name):
78    s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name)
79    return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).upper()
80
81
82def script_name(entry):
83    return os.path.basename(entry['name'])
84
85
86def cpp_name(entry):
87    return entry['ImplementedAs'] or script_name(entry)
88
89
90def enable_conditional_if_endif(code, feature):
91    # Jinja2 filter to generate if/endif directive blocks based on a feature
92    if not feature:
93        return code
94    condition = 'ENABLE(%s)' % feature
95    return ('#if %s\n' % condition +
96            code +
97            '#endif // %s\n' % condition)
98