1# Copyright 2019 The Meson development team
2
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6
7#     http://www.apache.org/licenses/LICENSE-2.0
8
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15import argparse
16
17meson_executable_template = '''project('{project_name}', '{language}',
18  version : '{version}',
19  default_options : [{default_options}])
20
21executable('{executable}',
22           {sourcespec},{depspec}
23           install : true)
24'''
25
26
27meson_jar_template = '''project('{project_name}', '{language}',
28  version : '{version}',
29  default_options : [{default_options}])
30
31jar('{executable}',
32    {sourcespec},{depspec}
33    main_class: '{main_class}',
34    install : true)
35'''
36
37
38def create_meson_build(options: argparse.Namespace) -> None:
39    if options.type != 'executable':
40        raise SystemExit('\nGenerating a meson.build file from existing sources is\n'
41                         'supported only for project type "executable".\n'
42                         'Run meson init in an empty directory to create a sample project.')
43    default_options = ['warning_level=3']
44    if options.language == 'cpp':
45        # This shows how to set this very common option.
46        default_options += ['cpp_std=c++14']
47    # If we get a meson.build autoformatter one day, this code could
48    # be simplified quite a bit.
49    formatted_default_options = ', '.join(f"'{x}'" for x in default_options)
50    sourcespec = ',\n           '.join(f"'{x}'" for x in options.srcfiles)
51    depspec = ''
52    if options.deps:
53        depspec = '\n           dependencies : [\n              '
54        depspec += ',\n              '.join(f"dependency('{x}')"
55                                            for x in options.deps.split(','))
56        depspec += '],'
57    if options.language != 'java':
58        content = meson_executable_template.format(project_name=options.name,
59                                                   language=options.language,
60                                                   version=options.version,
61                                                   executable=options.executable,
62                                                   sourcespec=sourcespec,
63                                                   depspec=depspec,
64                                                   default_options=formatted_default_options)
65    else:
66        content = meson_jar_template.format(project_name=options.name,
67                                            language=options.language,
68                                            version=options.version,
69                                            executable=options.executable,
70                                            main_class=options.name,
71                                            sourcespec=sourcespec,
72                                            depspec=depspec,
73                                            default_options=formatted_default_options)
74    open('meson.build', 'w', encoding='utf-8').write(content)
75    print('Generated meson.build file:\n\n' + content)
76