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#!/usr/bin/env python
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#
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# eval_line.py
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#
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# Copyright (C) 2014-2016, Takazumi Shirayanagi
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# This software is released under the new BSD License,
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# see LICENSE
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#
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import argparse
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import re
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import codecs
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from argparse import ArgumentParser
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# EvalIntAction
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class EvalIntAction(argparse.Action):
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def __call__(self, parser, namespace, values, options_string=None):
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setattr(namespace, self.dest, int(eval(values[0])))
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# command line option
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def parse_command_line():
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parser = ArgumentParser()
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parser.add_argument(
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'-v',
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'--version',
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action='version',
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version=u'%(prog)s version 0.2'
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)
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parser.add_argument(
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'-r',
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'--repeat',
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action=EvalIntAction,
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nargs=1,
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default=1,
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help='Set eval repeat count.'
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)
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parser.add_argument(
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'-s',
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'--start',
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action=EvalIntAction,
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nargs=1,
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default=0,
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help='Set eval repeat start no.'
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)
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parser.add_argument(
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'-o',
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'--output',
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default=None,
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help='output file path.'
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)
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parser.add_argument(
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'--encoding',
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default=None,
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help='output file encoding.'
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)
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parser.add_argument(
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'expression',
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metavar='EXP',
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nargs='+',
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help='eval expressions'
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)
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options = parser.parse_args()
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return options
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def eval_line(r, define, line):
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m = r.finditer(define)
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if m is None:
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return define
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else:
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out = define
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for e in m:
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out = out.replace(e.group(0), str(eval(e.group(1))))
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return out
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def main():
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re_eval = re.compile(r'\${([^}]+)}')
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options = parse_command_line()
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define = options.expression[0]
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for a in options.expression[1:]:
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define += ' ' + a
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output = options.output
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if output is None:
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for line in range(options.repeat):
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print(eval_line(re_eval, define, line + options.start))
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else:
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if options.encoding:
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file = codecs.open(output, 'w', options.encoding)
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else:
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file = open(output, 'w')
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for line in range(options.repeat):
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file.write(eval_line(re_eval, define, line + options.start))
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file.write('\n')
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file.close()
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if __name__ == '__main__':
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main()
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srz-zumix /
iutest
