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comparison makeitso/main.py @ 3:8931be6d2c8a

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stub for getting missing variables
author Jeff Hammel <jhammel@mozilla.com>
date Thu, 04 Nov 2010 19:12:56 -0700
parents 825922315ce6
children
comparison
equal deleted inserted replaced
2:825922315ce6 3:8931be6d2c8a
17 cmdstr = command 17 cmdstr = command
18 else: 18 else:
19 cmdstr = ' '.join(command) 19 cmdstr = ' '.join(command)
20 raise SystemExit("Command `%s` exited with code %d" % (cmdstr, code)) 20 raise SystemExit("Command `%s` exited with code %d" % (cmdstr, code))
21 21
22 def get_missing(name_error):
23 """
24 This is a horrible hack because python doesn't do the proper thing
25 via eval and return the name of the variable; instead, it just gives
26 you a message:
27 >>> try:
28 ... eval('2*foo')
29 ... except Exception, e:
30 ... pass
31 """
32 message = name_error.args[0]
33 varname = message.split("'")[1]
34 return varname
35
36 def missing_variables(template, variables):
37 """return additional variables needed"""
38 vars = variables.copy()
39 missing = set([])
40 while True:
41 try:
42 template.substitute(**missing)
43 return missing
44 except NameError, e:
45 missed = get_missing(e)
46 missing.add(missed)
47 vars[missed] = ''
48
22 def template_variables(template): 49 def template_variables(template):
23 """return the variables needed for a template""" 50 """return the variables needed for a template"""
24 raise NotImplementedError 51 return missing_variables(template, {})
25 52
26 def main(args=sys.argv[1:]): 53 def main(args=sys.argv[1:]):
27 54
28 # create option parser 55 # create option parser
29 usage = '%prog [options]' 56 usage = '%prog [options]'
30 parser = OptionParser(usage, description=__doc__) 57 parser = OptionParser(usage, description=__doc__)
31 parser.add_option('--variables', dest='variables', 58 parser.add_option('--variables', dest='variables', action='store_true',
32 help='print the variables in a template') 59 help='print the variables in a template')
33 options, args = parser.parse_args(args) 60 options, args = parser.parse_args(args)
61
62 if options.variables:
63 variables = template_variables() # TODO: pass template
64 return
34 65
35 # template variables 66 # template variables
36 variables = {} 67 variables = {}
37 _vars = [] 68 _vars = []
38 _args = [] 69 _args = []
53 else: 84 else:
54 content = sys.stdin.read() 85 content = sys.stdin.read()
55 template = Template(content) 86 template = Template(content)
56 print template.substitute(**variables) 87 print template.substitute(**variables)
57 88
58
59 if __name__ == '__main__': 89 if __name__ == '__main__':
60 main() 90 main()