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annotate makeitso/cli.py @ 59:93f2b2c7f838

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author Jeff Hammel <jhammel@mozilla.com>
date Thu, 06 Jan 2011 16:38:40 -0800
parents 112bf081148c
children da0d8c5c5157
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1 """
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2 command line parser for MakeItSo
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3 """
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4
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5 from optparse import OptionParser
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6
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7 class MakeItSoCLI(object):
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8 """command line interface to a makeitso template"""
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9
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10 def __init__(self, template_class):
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11 self.template_class = template_class
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12
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13 def parser(self):
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14 """
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15 return a command line parser for the template
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16 """
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17 usage = '%prog [options] output [var1=value1] [var2=value2] [...]'
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18 description = getattr(template, 'description', None)
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19 parser = OptionParser(usage=usage, description=description)
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20 parser.add_options('--variables', dest='variables',
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21 action='store_true', default=False,
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22 help="display variables in the template")
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23 return parser
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24
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25 def parse(self):
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26 parser = self.parser()
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27 options, args = parser.parse_args()
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28
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29 # print the variables for the templates
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30 if options.variables:
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32 # makes no sense without a template
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33 if not args:
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34 parser.print_usage()
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35 parser.exit()
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36
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37 # find all variables
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38 template = self.template()
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39 variables = template.variables()
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40
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41 # print them
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42 for variable in sorted(variables):
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43 print variable
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44 return
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45
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46 # template variables
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47 variables = {}
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48 output = []
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49 for arg in args:
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50 if '=' in arg:
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51 key, value = arg.split('=')
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52 variables[key] = value
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53 else:
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54 output.append(arg)
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55 if len(output) != 1:
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56 parser.error("Please specify one output")
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58 # instantiate the template
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59 template = self.template_class(output=output[0], variables=variables)
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61 return template