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- # Written by Bill Bumgarner and Bram Cohen
- # see LICENSE.txt for license information
-
- from types import *
- from cStringIO import StringIO
-
- def formatDefinitions(options, COLS):
- s = StringIO()
- indent = " " * 10
- width = COLS - 11
-
- if width < 15:
- width = COLS - 2
- indent = " "
-
- for (longname, default, doc) in options:
- s.write('--' + longname + ' <arg>\n')
- if default is not None:
- doc += ' (defaults to ' + repr(default) + ')'
- i = 0
- for word in doc.split():
- if i == 0:
- s.write(indent + word)
- i = len(word)
- elif i + len(word) >= width:
- s.write('\n' + indent + word)
- i = len(word)
- else:
- s.write(' ' + word)
- i += len(word) + 1
- s.write('\n\n')
- return s.getvalue()
-
- def usage(str):
- raise ValueError(str)
-
- def parseargs(argv, options, minargs = None, maxargs = None):
- config = {}
- longkeyed = {}
- for option in options:
- longname, default, doc = option
- longkeyed[longname] = option
- config[longname] = default
- options = []
- args = []
- pos = 0
- while pos < len(argv):
- if argv[pos][:2] != '--':
- args.append(argv[pos])
- pos += 1
- else:
- if pos == len(argv) - 1:
- usage('parameter passed in at end with no value')
- key, value = argv[pos][2:], argv[pos+1]
- pos += 2
- if not longkeyed.has_key(key):
- usage('unknown key --' + key)
- longname, default, doc = longkeyed[key]
- try:
- t = type(config[longname])
- if t is NoneType or t is StringType:
- config[longname] = value
- elif t in (IntType, LongType):
- config[longname] = long(value)
- elif t is FloatType:
- config[longname] = float(value)
- else:
- assert 0
- except ValueError, e:
- usage('wrong format of --%s - %s' % (key, str(e)))
- for key, value in config.items():
- if value is None:
- usage("Option --%s is required." % key)
- if minargs is not None and len(args) < minargs:
- usage("Must supply at least %d args." % minargs)
- if maxargs is not None and len(args) > maxargs:
- usage("Too many args - %d max." % maxargs)
- return (config, args)
-
- def test_parseargs():
- assert parseargs(('d', '--a', 'pq', 'e', '--b', '3', '--c', '4.5', 'f'), (('a', 'x', ''), ('b', 1, ''), ('c', 2.3, ''))) == ({'a': 'pq', 'b': 3, 'c': 4.5}, ['d', 'e', 'f'])
- assert parseargs([], [('a', 'x', '')]) == ({'a': 'x'}, [])
- assert parseargs(['--a', 'x', '--a', 'y'], [('a', '', '')]) == ({'a': 'y'}, [])
- try:
- parseargs([], [('a', 'x', '')])
- except ValueError:
- pass
- try:
- parseargs(['--a', 'x'], [])
- except ValueError:
- pass
- try:
- parseargs(['--a'], [('a', 'x', '')])
- except ValueError:
- pass
- try:
- parseargs([], [], 1, 2)
- except ValueError:
- pass
- assert parseargs(['x'], [], 1, 2) == ({}, ['x'])
- assert parseargs(['x', 'y'], [], 1, 2) == ({}, ['x', 'y'])
- try:
- parseargs(['x', 'y', 'z'], [], 1, 2)
- except ValueError:
- pass
- try:
- parseargs(['--a', '2.0'], [('a', 3, '')])
- except ValueError:
- pass
- try:
- parseargs(['--a', 'z'], [('a', 2.1, '')])
- except ValueError:
- pass
-
-