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53 | <H1><A NAME="SECTION00101800000000000000000"> | |
54 | 10.18 <tt class="module">distutils.fancy_getopt</tt> | |
55 | -- Wrapper around the standard getopt module</A> | |
56 | </H1> | |
57 | <A NAME="module-distutils.fancygetopt"></A> | |
58 | ||
59 | <P> | |
60 | This module provides a wrapper around the standard <tt class="module">getopt</tt> | |
61 | module that provides the following additional features: | |
62 | ||
63 | <P> | |
64 | ||
65 | <UL> | |
66 | <LI>short and long options are tied together | |
67 | </LI> | |
68 | <LI>options have help strings, so <tt class="function">fancy_getopt</tt> could potentially | |
69 | create a complete usage summary | |
70 | </LI> | |
71 | <LI>options set attributes of a passed-in object | |
72 | </LI> | |
73 | <LI>boolean options can have ``negative aliases'' -- eg. if | |
74 | <b class="programopt">--quiet</b> is the ``negative alias'' of | |
75 | <b class="programopt">--verbose</b>, then <b class="programopt">--quiet</b> on the command | |
76 | line sets <var>verbose</var> to false. | |
77 | ||
78 | <P> | |
79 | </LI> | |
80 | </UL> | |
81 | ||
82 | <P> | |
83 | <b class="du-xxx">Should be replaced with <tt class="module">optik</tt> (which is also now | |
84 | known as <tt class="module">optparse</tt> in Python 2.3 and later).</b> | |
85 | ||
86 | <P> | |
87 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
88 | <td><nobr><b><tt id='l2h-97' xml:id='l2h-97' class="function">fancy_getopt</tt></b>(</nobr></td> | |
89 | <td><var>options, negative_opt, object, args</var>)</td></tr></table></dt> | |
90 | <dd> | |
91 | Wrapper function. <var>options</var> is a list of | |
92 | "<tt class="samp">(long_option, short_option, help_string)</tt>" 3-tuples as described in the | |
93 | constructor for <tt class="class">FancyGetopt</tt>. <var>negative_opt</var> should be a dictionary | |
94 | mapping option names to option names, both the key and value should be in the | |
95 | <var>options</var> list. <var>object</var> is an object which will be used to store | |
96 | values (see the <tt class="method">getopt()</tt> method of the <tt class="class">FancyGetopt</tt> class). | |
97 | <var>args</var> is the argument list. Will use <code>sys.argv[1:]</code> if you | |
98 | pass <code>None</code> as <var>args</var>. | |
99 | </dl> | |
100 | ||
101 | <P> | |
102 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
103 | <td><nobr><b><tt id='l2h-98' xml:id='l2h-98' class="function">wrap_text</tt></b>(</nobr></td> | |
104 | <td><var>text, width</var>)</td></tr></table></dt> | |
105 | <dd> | |
106 | Wraps <var>text</var> to less than <var>width</var> wide. | |
107 | ||
108 | <P> | |
109 | <span class="warning"><b class="label">Warning:</b> | |
110 | Should be replaced with <tt class="module">textwrap</tt> (which is available | |
111 | in Python 2.3 and later).</span> | |
112 | </dl> | |
113 | ||
114 | <P> | |
115 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
116 | <td><nobr><b><span class="typelabel">class</span> <tt id='l2h-99' xml:id='l2h-99' class="class">FancyGetopt</tt></b>(</nobr></td> | |
117 | <td><var></var><big>[</big><var>option_table=<code>None</code></var><big>]</big><var></var>)</td></tr></table></dt> | |
118 | <dd> | |
119 | The option_table is a list of 3-tuples: "<tt class="samp">(long_option, | |
120 | short_option, help_string)</tt>" | |
121 | <P> | |
122 | If an option takes an argument, its <var>long_option</var> should have <code>'='</code> | |
123 | appended; <var>short_option</var> should just be a single character, no <code>':'</code> | |
124 | in any case. <var>short_option</var> should be <code>None</code> if a <var>long_option</var> | |
125 | doesn't have a corresponding <var>short_option</var>. All option tuples must have | |
126 | long options. | |
127 | </dl> | |
128 | ||
129 | <P> | |
130 | The <tt class="class">FancyGetopt</tt> class provides the following methods: | |
131 | ||
132 | <P> | |
133 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
134 | <td><nobr><b><tt id='l2h-100' xml:id='l2h-100' class="method">getopt</tt></b>(</nobr></td> | |
135 | <td><var></var><big>[</big><var>args=<code>None</code>, object=<code>None</code></var><big>]</big><var></var>)</td></tr></table></dt> | |
136 | <dd> | |
137 | Parse command-line options in args. Store as attributes on <var>object</var>. | |
138 | ||
139 | <P> | |
140 | If <var>args</var> is <code>None</code> or not supplied, uses <code>sys.argv[1:]</code>. If | |
141 | <var>object</var> is <code>None</code> or not supplied, creates a new <tt class="class">OptionDummy</tt> | |
142 | instance, stores option values there, and returns a tuple "<tt class="samp">(args, | |
143 | object)</tt>". If <var>object</var> is supplied, it is modified in place and | |
144 | <tt class="function">getopt()</tt> just returns <var>args</var>; in both cases, the returned | |
145 | <var>args</var> is a modified copy of the passed-in <var>args</var> list, which | |
146 | is left untouched. | |
147 | </dl> | |
148 | ||
149 | <P> | |
150 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
151 | <td><nobr><b><tt id='l2h-101' xml:id='l2h-101' class="method">get_option_order</tt></b>(</nobr></td> | |
152 | <td><var></var>)</td></tr></table></dt> | |
153 | <dd> | |
154 | Returns the list of "<tt class="samp">(option, value)</tt>" tuples processed by the | |
155 | previous run of <tt class="method">getopt()</tt> Raises <tt class="exception">RuntimeError</tt> if | |
156 | <tt class="method">getopt()</tt> hasn't been called yet. | |
157 | </dl> | |
158 | ||
159 | <P> | |
160 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
161 | <td><nobr><b><tt id='l2h-102' xml:id='l2h-102' class="method">generate_help</tt></b>(</nobr></td> | |
162 | <td><var></var><big>[</big><var>header=<code>None</code></var><big>]</big><var></var>)</td></tr></table></dt> | |
163 | <dd> | |
164 | Generate help text (a list of strings, one per suggested line of | |
165 | output) from the option table for this <tt class="class">FancyGetopt</tt> object. | |
166 | ||
167 | <P> | |
168 | If supplied, prints the supplied <var>header</var> at the top of the help. | |
169 | </dl> | |
170 | ||
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