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1 | 1 | # fancyopts.py - better command line parsing |
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2 | 2 | # |
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3 | 3 | # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | from __future__ import absolute_import | |
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9 | ||
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8 | 10 | import getopt |
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9 | import util | |
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10 | from i18n import _ | |
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11 | ||
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12 | from .i18n import _ | |
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13 | from . import util | |
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11 | 14 | |
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12 | 15 | def gnugetopt(args, options, longoptions): |
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13 | 16 | """Parse options mostly like getopt.gnu_getopt. |
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14 | 17 | |
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15 | 18 | This is different from getopt.gnu_getopt in that an argument of - will |
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16 | 19 | become an argument of - instead of vanishing completely. |
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17 | 20 | """ |
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18 | 21 | extraargs = [] |
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19 | 22 | if '--' in args: |
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20 | 23 | stopindex = args.index('--') |
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21 | 24 | extraargs = args[stopindex + 1:] |
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22 | 25 | args = args[:stopindex] |
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23 | 26 | opts, parseargs = getopt.getopt(args, options, longoptions) |
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24 | 27 | args = [] |
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25 | 28 | while parseargs: |
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26 | 29 | arg = parseargs.pop(0) |
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27 | 30 | if arg and arg[0] == '-' and len(arg) > 1: |
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28 | 31 | parseargs.insert(0, arg) |
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29 | 32 | topts, newparseargs = getopt.getopt(parseargs, options, longoptions) |
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30 | 33 | opts = opts + topts |
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31 | 34 | parseargs = newparseargs |
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32 | 35 | else: |
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33 | 36 | args.append(arg) |
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34 | 37 | args.extend(extraargs) |
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35 | 38 | return opts, args |
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36 | 39 | |
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37 | 40 | |
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38 | 41 | def fancyopts(args, options, state, gnu=False): |
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39 | 42 | """ |
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40 | 43 | read args, parse options, and store options in state |
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41 | 44 | |
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42 | 45 | each option is a tuple of: |
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43 | 46 | |
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44 | 47 | short option or '' |
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45 | 48 | long option |
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46 | 49 | default value |
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47 | 50 | description |
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48 | 51 | option value label(optional) |
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49 | 52 | |
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50 | 53 | option types include: |
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51 | 54 | |
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52 | 55 | boolean or none - option sets variable in state to true |
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53 | 56 | string - parameter string is stored in state |
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54 | 57 | list - parameter string is added to a list |
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55 | 58 | integer - parameter strings is stored as int |
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56 | 59 | function - call function with parameter |
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57 | 60 | |
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58 | 61 | non-option args are returned |
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59 | 62 | """ |
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60 | 63 | namelist = [] |
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61 | 64 | shortlist = '' |
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62 | 65 | argmap = {} |
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63 | 66 | defmap = {} |
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64 | 67 | |
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65 | 68 | for option in options: |
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66 | 69 | if len(option) == 5: |
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67 | 70 | short, name, default, comment, dummy = option |
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68 | 71 | else: |
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69 | 72 | short, name, default, comment = option |
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70 | 73 | # convert opts to getopt format |
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71 | 74 | oname = name |
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72 | 75 | name = name.replace('-', '_') |
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73 | 76 | |
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74 | 77 | argmap['-' + short] = argmap['--' + oname] = name |
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75 | 78 | defmap[name] = default |
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76 | 79 | |
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77 | 80 | # copy defaults to state |
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78 | 81 | if isinstance(default, list): |
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79 | 82 | state[name] = default[:] |
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80 | 83 | elif callable(default): |
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81 | 84 | state[name] = None |
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82 | 85 | else: |
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83 | 86 | state[name] = default |
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84 | 87 | |
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85 | 88 | # does it take a parameter? |
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86 | 89 | if not (default is None or default is True or default is False): |
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87 | 90 | if short: |
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88 | 91 | short += ':' |
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89 | 92 | if oname: |
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90 | 93 | oname += '=' |
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91 | 94 | if short: |
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92 | 95 | shortlist += short |
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93 | 96 | if name: |
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94 | 97 | namelist.append(oname) |
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95 | 98 | |
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96 | 99 | # parse arguments |
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97 | 100 | if gnu: |
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98 | 101 | parse = gnugetopt |
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99 | 102 | else: |
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100 | 103 | parse = getopt.getopt |
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101 | 104 | opts, args = parse(args, shortlist, namelist) |
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102 | 105 | |
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103 | 106 | # transfer result to state |
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104 | 107 | for opt, val in opts: |
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105 | 108 | name = argmap[opt] |
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106 | 109 | obj = defmap[name] |
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107 | 110 | t = type(obj) |
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108 | 111 | if callable(obj): |
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109 | 112 | state[name] = defmap[name](val) |
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110 | 113 | elif t is type(1): |
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111 | 114 | try: |
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112 | 115 | state[name] = int(val) |
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113 | 116 | except ValueError: |
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114 | 117 | raise util.Abort(_('invalid value %r for option %s, ' |
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115 | 118 | 'expected int') % (val, opt)) |
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116 | 119 | elif t is type(''): |
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117 | 120 | state[name] = val |
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118 | 121 | elif t is type([]): |
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119 | 122 | state[name].append(val) |
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120 | 123 | elif t is type(None) or t is type(False): |
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121 | 124 | state[name] = True |
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122 | 125 | |
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123 | 126 | # return unparsed args |
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124 | 127 | return args |
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