56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
#!/usr/bin/env python3
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# -*- coding: ascii -*-
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from __future__ import unicode_literals
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import sys
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import io
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from argparse import ArgumentParser, Action, SUPPRESS
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import execjs
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class PrintRuntimes(Action):
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def __init__(self, option_strings, dest=SUPPRESS, default=SUPPRESS, help=None):
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super(PrintRuntimes, self).__init__(
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option_strings=option_strings,
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dest=dest,
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default=default,
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nargs=0,
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help=help,
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)
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def __call__(self, parser, namespace, values, option_string=None):
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message = "".join(name + "\n" for name, runtime in execjs.runtimes().items() if runtime.is_available())
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parser.exit(message=message)
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def main():
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parser = ArgumentParser()
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parser.add_argument('--print-available-runtimes', action=PrintRuntimes)
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parser.add_argument('-r', '--runtime', action='store', dest='runtime')
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parser.add_argument('-e', '--eval', action='store', dest='expr')
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parser.add_argument("--encoding", action="store", dest="files_encoding", default="utf8")
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parser.add_argument(nargs="*", action='store', dest='files')
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opts = parser.parse_args()
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runtime = execjs.get(opts.runtime)
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codes = []
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for f in opts.files:
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with io.open(f, encoding=opts.files_encoding) as fp:
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codes.append(fp.read())
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context = runtime.compile("\n".join(codes))
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if opts.expr:
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if isinstance(opts.expr, bytes):
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expr = opts.expr.decode()
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else:
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expr = opts.expr
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sys.stdout.write(repr(context.eval(expr)) + "\n")
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else:
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ret = context.eval(sys.stdin.read())
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sys.stdout.write(repr(ret) + "\n")
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if "__main__" == __name__:
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main()
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