85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
"""
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SCons++ Bootstrapper
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"""
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import os
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from pathlib import Path
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import shutil
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import subprocess
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import sys
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from SCons.Environment import Environment
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Import('config')
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_SPP_FOLDER_NAME = 'scons-plus-plus'
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_SPP_DEFAULT_REPOSITORY = 'https://git.mewin.de/mewin/scons-plus-plus.git'
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_SPP_DEFAULT_BRANCH = 'master'
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spp_root: Path
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spp_repository: str
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spp_branch: str
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def _main() -> Environment:
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global spp_root, spp_repository, spp_branch
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spp_root = config.get('SPP_ROOT')
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if spp_root is None:
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spp_root = _get_default_spp_root()
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elif not isinstance(spp_root, Path):
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spp_root = Path(str(spp_root))
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spp_root = spp_root.absolute()
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spp_repository = config.get('SPP_REPOSITORY', _SPP_DEFAULT_REPOSITORY)
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spp_branch = config.get('SPP_BRANCH', _SPP_DEFAULT_BRANCH)
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_printinfo(f'Using SCons++ root at: {spp_root}')
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if not spp_root.exists():
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_printinfo('SCons++ does not yet exist, downloading it.')
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_install_spp()
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spp_script = spp_root / 'SConscript'
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if not spp_script.exists():
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_printerr(f'SCons++ main script not found at {spp_script}!')
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sys.exit(1)
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return SConscript(spp_script, exports=['config'])
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def _get_default_spp_root() -> Path:
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if os.name == 'posix':
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# follow XDG specification -> first try $XDG_DATA_HOME, then $HOME/.local/share
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data_home = os.environ.get('XDG_DATA_HOME')
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if data_home is not None:
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return Path(data_home, _SPP_FOLDER_NAME)
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home = os.environ.get('HOME')
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if home is not None:
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return Path(home, '.local', 'share', _SPP_FOLDER_NAME)
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elif os.name == 'nt':
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# just use LocalAppData, which should always be set on Windows
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return Path(os.environ['LocalAppData'], _SPP_FOLDER_NAME)
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_printinfo(f'Could not detect SCons++ root directory, falling back to ./{_SPP_FOLDER_NAME}.')
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return Path(_SPP_FOLDER_NAME)
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def _install_spp() -> None:
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git_exe = shutil.which('git')
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if git_exe is None:
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_printerr('No git executable found, cannot install SCons++.')
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sys.exit(1)
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_exec_checked((git_exe, 'clone', '-b', spp_branch, '--progress', spp_repository, spp_root))
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def _exec_checked(args: Sequence[str], **kwargs) -> None:
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subprocess.run(args, stdout=sys.stdout, stderr=sys.stderr, check=True, **kwargs)
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if not GetOption('silent'):
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_printinfo = print
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else:
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def _printinfo(*args): ...
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def _printerr(*args) -> None:
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print(*args, file=sys.stderr)
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env = _main()
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Return('env')
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