mirror of https://github.com/kivy/pyjnius.git
113 lines
3.1 KiB
Python
113 lines
3.1 KiB
Python
__all__ = ('set_options', 'add_options', 'get_options',
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'set_classpath', 'add_classpath', 'get_classpath',
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'expand_classpath')
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import platform
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if platform.system() == 'Windows':
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split_char = ';'
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else:
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split_char = ':'
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vm_running = False
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vm_started_at = None
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options = []
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classpath = None
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def check_vm_running():
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"""Raises a ValueError if the VM is already running."""
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if vm_running:
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raise ValueError("VM is already running, can't set classpath/options; VM started at" + vm_started_at)
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def set_options(*opts):
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"""Sets the list of options to the JVM. Removes any previously set options."""
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check_vm_running()
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global options
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options = list(opts)
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def add_options(*opts):
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"""Appends options to the list of VM options."""
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check_vm_running()
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global options
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options.extend(opts)
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def get_options():
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"""Retrieves the current list of VM options."""
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global options
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return list(options)
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def set_classpath(*path):
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"""
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Sets the classpath for the JVM to use. Replaces any existing classpath, overriding the CLASSPATH environment variable.
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"""
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check_vm_running()
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global classpath
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classpath = list(path)
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def add_classpath(*path):
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"""
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Appends items to the classpath for the JVM to use.
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Replaces any existing classpath, overriding the CLASSPATH environment variable.
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"""
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check_vm_running()
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global classpath
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if classpath is None:
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classpath = list(path)
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else:
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classpath.extend(path)
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def get_classpath():
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"Retrieves the classpath the JVM will use."
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from os import environ
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from os.path import realpath
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import sys
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global classpath
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# add a path to java classes packaged with jnius
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if sys.version_info >= (3, 9):
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from contextlib import ExitStack
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import importlib.resources
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import atexit
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# see https://importlib-resources.readthedocs.io/en/latest/migration.html#pkg-resources-resource-filename
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file_manager = ExitStack()
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atexit.register(file_manager.close)
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# importlib.resources.files is only available from Python 3.9
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# use https://github.com/python/importlib_resources/issues/60 not __name__ as jnius_config.py is not a package
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resource_path = importlib.resources.files('jnius') / 'src'
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return_classpath = [ str(resource_path) ]
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file_manager.enter_context(importlib.resources.as_file(resource_path))
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else:
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from pkg_resources import resource_filename
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return_classpath = [realpath(resource_filename(__name__, 'jnius/src'))]
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if classpath is not None:
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return_classpath = classpath + return_classpath
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elif 'CLASSPATH' in environ:
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return_classpath = environ['CLASSPATH'].split(split_char) + return_classpath
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else:
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return_classpath = [realpath('.')] + return_classpath
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return return_classpath
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def expand_classpath():
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from glob import glob
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paths = []
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# deal with wildcards
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for path in get_classpath():
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if not path.endswith('*'):
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paths.append(path)
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else:
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paths.extend(glob(path + '.[Jj][Aa][Rr]'))
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return split_char.join(paths)
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