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<h1>getopt.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Getopt for GNU.</span>
17
<a name="l00002"></a>00002 <span class="comment"> NOTE: getopt is now part of the C library, so if you don't know what</span>
18
<a name="l00003"></a>00003 <span class="comment"> "Keep this file name-space clean" means, talk to drepper@gnu.org</span>
19
<a name="l00004"></a>00004 <span class="comment"> before changing it!</span>
20
<a name="l00005"></a>00005 <span class="comment"> Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001</span>
21
<a name="l00006"></a>00006 <span class="comment"> Free Software Foundation, Inc.</span>
22
<a name="l00007"></a>00007 <span class="comment"> This file is part of the GNU C Library.</span>
23
<a name="l00008"></a>00008 <span class="comment"></span>
24
<a name="l00009"></a>00009 <span class="comment"> The GNU C Library is free software; you can redistribute it and/or</span>
25
<a name="l00010"></a>00010 <span class="comment"> modify it under the terms of the GNU Lesser General Public</span>
26
<a name="l00011"></a>00011 <span class="comment"> License as published by the Free Software Foundation; either</span>
27
<a name="l00012"></a>00012 <span class="comment"> version 2.1 of the License, or (at your option) any later version.</span>
28
<a name="l00013"></a>00013 <span class="comment"></span>
29
<a name="l00014"></a>00014 <span class="comment"> The GNU C Library is distributed in the hope that it will be useful,</span>
30
<a name="l00015"></a>00015 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
31
<a name="l00016"></a>00016 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
32
<a name="l00017"></a>00017 <span class="comment"> Lesser General Public License for more details.</span>
33
<a name="l00018"></a>00018 <span class="comment"></span>
34
<a name="l00019"></a>00019 <span class="comment"> You should have received a copy of the GNU Lesser General Public</span>
35
<a name="l00020"></a>00020 <span class="comment"> License along with the GNU C Library; if not, write to the Free</span>
36
<a name="l00021"></a>00021 <span class="comment"> Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA</span>
37
<a name="l00022"></a>00022 <span class="comment"> 02111-1307 USA. */</span>
38
<a name="l00023"></a>00023
39
<a name="l00024"></a>00024 <span class="comment">/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.</span>
40
<a name="l00025"></a>00025 <span class="comment"> Ditto for AIX 3.2 and <stdlib.h>. */</span>
41
<a name="l00026"></a>00026 <span class="preprocessor">#ifndef _NO_PROTO</span>
42
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor"># define _NO_PROTO</span>
43
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
44
<a name="l00029"></a>00029 <span class="preprocessor"></span>
45
<a name="l00030"></a>00030 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
46
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor"># include <config.h></span>
47
<a name="l00032"></a>00032 <span class="preprocessor">#endif</span>
48
<a name="l00033"></a>00033 <span class="preprocessor"></span>
49
<a name="l00034"></a>00034 <span class="preprocessor">#if !defined __STDC__ || !__STDC__</span>
50
<a name="l00035"></a>00035 <span class="preprocessor"></span><span class="comment">/* This is a separate conditional since some stdc systems</span>
51
<a name="l00036"></a>00036 <span class="comment"> reject `defined (const)'. */</span>
52
<a name="l00037"></a>00037 <span class="preprocessor"># ifndef const</span>
53
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor"># define const</span>
54
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
55
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
56
<a name="l00041"></a>00041 <span class="preprocessor"></span>
57
<a name="l00042"></a>00042 <span class="preprocessor">#include <stdio.h></span>
58
<a name="l00043"></a>00043
59
<a name="l00044"></a>00044 <span class="comment">/* Comment out all this code if we are using the GNU C Library, and are not</span>
60
<a name="l00045"></a>00045 <span class="comment"> actually compiling the library itself. This code is part of the GNU C</span>
61
<a name="l00046"></a>00046 <span class="comment"> Library, but also included in many other GNU distributions. Compiling</span>
62
<a name="l00047"></a>00047 <span class="comment"> and linking in this code is a waste when using the GNU C library</span>
63
<a name="l00048"></a>00048 <span class="comment"> (especially if it is a shared library). Rather than having every GNU</span>
64
<a name="l00049"></a>00049 <span class="comment"> program understand `configure --with-gnu-libc' and omit the object files,</span>
65
<a name="l00050"></a>00050 <span class="comment"> it is simpler to just do this in the source for each such file. */</span>
66
<a name="l00051"></a>00051
67
<a name="l00052"></a>00052 <span class="preprocessor">#define GETOPT_INTERFACE_VERSION 2</span>
68
<a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor">#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2</span>
69
<a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor"># include <gnu-versions.h></span>
70
<a name="l00055"></a>00055 <span class="preprocessor"># if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION</span>
71
<a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor"># define ELIDE_CODE</span>
72
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
73
<a name="l00058"></a>00058 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
74
<a name="l00059"></a>00059 <span class="preprocessor"></span>
75
<a name="l00060"></a>00060 <span class="preprocessor">#ifndef ELIDE_CODE</span>
76
<a name="l00061"></a>00061 <span class="preprocessor"></span>
77
<a name="l00062"></a>00062
78
<a name="l00063"></a>00063 <span class="comment">/* This needs to come after some library #include</span>
79
<a name="l00064"></a>00064 <span class="comment"> to get __GNU_LIBRARY__ defined. */</span>
80
<a name="l00065"></a>00065 <span class="preprocessor">#ifdef __GNU_LIBRARY__</span>
81
<a name="l00066"></a>00066 <span class="preprocessor"></span><span class="comment">/* Don't include stdlib.h for non-GNU C libraries because some of them</span>
82
<a name="l00067"></a>00067 <span class="comment"> contain conflicting prototypes for getopt. */</span>
83
<a name="l00068"></a>00068 <span class="preprocessor"># include <stdlib.h></span>
84
<a name="l00069"></a>00069 <span class="preprocessor"># include <unistd.h></span>
85
<a name="l00070"></a>00070 <span class="preprocessor">#endif </span><span class="comment">/* GNU C library. */</span>
86
<a name="l00071"></a>00071
87
<a name="l00072"></a>00072 <span class="preprocessor">#ifdef VMS</span>
88
<a name="l00073"></a>00073 <span class="preprocessor"></span><span class="preprocessor"># include <unixlib.h></span>
89
<a name="l00074"></a>00074 <span class="preprocessor"># if HAVE_STRING_H - 0</span>
90
<a name="l00075"></a>00075 <span class="preprocessor"></span><span class="preprocessor"># include <string.h></span>
91
<a name="l00076"></a>00076 <span class="preprocessor"># endif</span>
92
<a name="l00077"></a>00077 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
93
<a name="l00078"></a>00078 <span class="preprocessor"></span>
94
<a name="l00079"></a>00079 <span class="preprocessor">#ifndef _</span>
95
<a name="l00080"></a>00080 <span class="preprocessor"></span><span class="comment">/* This is for other GNU distributions with internationalized messages. */</span>
96
<a name="l00081"></a>00081 <span class="preprocessor"># if defined HAVE_LIBINTL_H || defined _LIBC</span>
97
<a name="l00082"></a>00082 <span class="preprocessor"></span><span class="preprocessor"># include <libintl.h></span>
98
<a name="l00083"></a>00083 <span class="preprocessor"># ifndef _</span>
99
<a name="l00084"></a>00084 <span class="preprocessor"></span><span class="preprocessor"># define _(msgid) gettext (msgid)</span>
100
<a name="l00085"></a>00085 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
101
<a name="l00086"></a>00086 <span class="preprocessor"></span><span class="preprocessor"># else</span>
102
<a name="l00087"></a>00087 <span class="preprocessor"></span><span class="preprocessor"># define _(msgid) (msgid)</span>
103
<a name="l00088"></a>00088 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
104
<a name="l00089"></a>00089 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
105
<a name="l00090"></a>00090 <span class="preprocessor"></span>
106
<a name="l00091"></a>00091 <span class="comment">/* This version of `getopt' appears to the caller like standard Unix `getopt'</span>
107
<a name="l00092"></a>00092 <span class="comment"> but it behaves differently for the user, since it allows the user</span>
108
<a name="l00093"></a>00093 <span class="comment"> to intersperse the options with the other arguments.</span>
109
<a name="l00094"></a>00094 <span class="comment"></span>
110
<a name="l00095"></a>00095 <span class="comment"> As `getopt' works, it permutes the elements of ARGV so that,</span>
111
<a name="l00096"></a>00096 <span class="comment"> when it is done, all the options precede everything else. Thus</span>
112
<a name="l00097"></a>00097 <span class="comment"> all application programs are extended to handle flexible argument order.</span>
113
<a name="l00098"></a>00098 <span class="comment"></span>
114
<a name="l00099"></a>00099 <span class="comment"> Setting the environment variable POSIXLY_CORRECT disables permutation.</span>
115
<a name="l00100"></a>00100 <span class="comment"> Then the behavior is completely standard.</span>
116
<a name="l00101"></a>00101 <span class="comment"></span>
117
<a name="l00102"></a>00102 <span class="comment"> GNU application programs can use a third alternative mode in which</span>
118
<a name="l00103"></a>00103 <span class="comment"> they can distinguish the relative order of options and other arguments. */</span>
119
<a name="l00104"></a>00104
120
<a name="l00105"></a>00105 <span class="preprocessor">#include "getopt.h"</span>
121
<a name="l00106"></a>00106
122
<a name="l00107"></a>00107 <span class="comment">/* For communication from `getopt' to the caller.</span>
123
<a name="l00108"></a>00108 <span class="comment"> When `getopt' finds an option that takes an argument,</span>
124
<a name="l00109"></a>00109 <span class="comment"> the argument value is returned here.</span>
125
<a name="l00110"></a>00110 <span class="comment"> Also, when `ordering' is RETURN_IN_ORDER,</span>
126
<a name="l00111"></a>00111 <span class="comment"> each non-option ARGV-element is returned here. */</span>
127
<a name="l00112"></a>00112
128
<a name="l00113"></a>00113 <span class="keywordtype">char</span> *optarg;
129
<a name="l00114"></a>00114
130
<a name="l00115"></a>00115 <span class="comment">/* Index in ARGV of the next element to be scanned.</span>
131
<a name="l00116"></a>00116 <span class="comment"> This is used for communication to and from the caller</span>
132
<a name="l00117"></a>00117 <span class="comment"> and for communication between successive calls to `getopt'.</span>
133
<a name="l00118"></a>00118 <span class="comment"></span>
134
<a name="l00119"></a>00119 <span class="comment"> On entry to `getopt', zero means this is the first call; initialize.</span>
135
<a name="l00120"></a>00120 <span class="comment"></span>
136
<a name="l00121"></a>00121 <span class="comment"> When `getopt' returns -1, this is the index of the first of the</span>
137
<a name="l00122"></a>00122 <span class="comment"> non-option elements that the caller should itself scan.</span>
138
<a name="l00123"></a>00123 <span class="comment"></span>
139
<a name="l00124"></a>00124 <span class="comment"> Otherwise, `optind' communicates from one call to the next</span>
140
<a name="l00125"></a>00125 <span class="comment"> how much of ARGV has been scanned so far. */</span>
141
<a name="l00126"></a>00126
142
<a name="l00127"></a>00127 <span class="comment">/* 1003.2 says this must be 1 before any call. */</span>
143
<a name="l00128"></a>00128 <span class="keywordtype">int</span> optind = 1;
144
<a name="l00129"></a>00129
145
<a name="l00130"></a>00130 <span class="comment">/* Formerly, initialization of getopt depended on optind==0, which</span>
146
<a name="l00131"></a>00131 <span class="comment"> causes problems with re-calling getopt as programs generally don't</span>
147
<a name="l00132"></a>00132 <span class="comment"> know that. */</span>
148
<a name="l00133"></a>00133
149
<a name="l00134"></a>00134 <span class="keywordtype">int</span> __getopt_initialized;
150
<a name="l00135"></a>00135
151
<a name="l00136"></a>00136 <span class="comment">/* The next char to be scanned in the option-element</span>
152
<a name="l00137"></a>00137 <span class="comment"> in which the last option character we returned was found.</span>
153
<a name="l00138"></a>00138 <span class="comment"> This allows us to pick up the scan where we left off.</span>
154
<a name="l00139"></a>00139 <span class="comment"></span>
155
<a name="l00140"></a>00140 <span class="comment"> If this is zero, or a null string, it means resume the scan</span>
156
<a name="l00141"></a>00141 <span class="comment"> by advancing to the next ARGV-element. */</span>
157
<a name="l00142"></a>00142
158
<a name="l00143"></a>00143 <span class="keyword">static</span> <span class="keywordtype">char</span> *nextchar;
159
<a name="l00144"></a>00144
160
<a name="l00145"></a>00145 <span class="comment">/* Callers store zero here to inhibit the error message</span>
161
<a name="l00146"></a>00146 <span class="comment"> for unrecognized options. */</span>
162
<a name="l00147"></a>00147
163
<a name="l00148"></a>00148 <span class="keywordtype">int</span> opterr = 1;
164
<a name="l00149"></a>00149
165
<a name="l00150"></a>00150 <span class="comment">/* Set to an option character which was unrecognized.</span>
166
<a name="l00151"></a>00151 <span class="comment"> This must be initialized on some systems to avoid linking in the</span>
167
<a name="l00152"></a>00152 <span class="comment"> system's own getopt implementation. */</span>
168
<a name="l00153"></a>00153
169
<a name="l00154"></a>00154 <span class="keywordtype">int</span> optopt = <span class="charliteral">'?'</span>;
170
<a name="l00155"></a>00155
171
<a name="l00156"></a>00156 <span class="comment">/* Describe how to deal with options that follow non-option ARGV-elements.</span>
172
<a name="l00157"></a>00157 <span class="comment"></span>
173
<a name="l00158"></a>00158 <span class="comment"> If the caller did not specify anything,</span>
174
<a name="l00159"></a>00159 <span class="comment"> the default is REQUIRE_ORDER if the environment variable</span>
175
<a name="l00160"></a>00160 <span class="comment"> POSIXLY_CORRECT is defined, PERMUTE otherwise.</span>
176
<a name="l00161"></a>00161 <span class="comment"></span>
177
<a name="l00162"></a>00162 <span class="comment"> REQUIRE_ORDER means don't recognize them as options;</span>
178
<a name="l00163"></a>00163 <span class="comment"> stop option processing when the first non-option is seen.</span>
179
<a name="l00164"></a>00164 <span class="comment"> This is what Unix does.</span>
180
<a name="l00165"></a>00165 <span class="comment"> This mode of operation is selected by either setting the environment</span>
181
<a name="l00166"></a>00166 <span class="comment"> variable POSIXLY_CORRECT, or using `+' as the first character</span>
182
<a name="l00167"></a>00167 <span class="comment"> of the list of option characters.</span>
183
<a name="l00168"></a>00168 <span class="comment"></span>
184
<a name="l00169"></a>00169 <span class="comment"> PERMUTE is the default. We permute the contents of ARGV as we scan,</span>
185
<a name="l00170"></a>00170 <span class="comment"> so that eventually all the non-options are at the end. This allows options</span>
186
<a name="l00171"></a>00171 <span class="comment"> to be given in any order, even with programs that were not written to</span>
187
<a name="l00172"></a>00172 <span class="comment"> expect this.</span>
188
<a name="l00173"></a>00173 <span class="comment"></span>
189
<a name="l00174"></a>00174 <span class="comment"> RETURN_IN_ORDER is an option available to programs that were written</span>
190
<a name="l00175"></a>00175 <span class="comment"> to expect options and other ARGV-elements in any order and that care about</span>
191
<a name="l00176"></a>00176 <span class="comment"> the ordering of the two. We describe each non-option ARGV-element</span>
192
<a name="l00177"></a>00177 <span class="comment"> as if it were the argument of an option with character code 1.</span>
193
<a name="l00178"></a>00178 <span class="comment"> Using `-' as the first character of the list of option characters</span>
194
<a name="l00179"></a>00179 <span class="comment"> selects this mode of operation.</span>
195
<a name="l00180"></a>00180 <span class="comment"></span>
196
<a name="l00181"></a>00181 <span class="comment"> The special argument `--' forces an end of option-scanning regardless</span>
197
<a name="l00182"></a>00182 <span class="comment"> of the value of `ordering'. In the case of RETURN_IN_ORDER, only</span>
198
<a name="l00183"></a>00183 <span class="comment"> `--' can cause `getopt' to return -1 with `optind' != ARGC. */</span>
199
<a name="l00184"></a>00184
200
<a name="l00185"></a>00185 <span class="keyword">static</span> <span class="keyword">enum</span>
201
<a name="l00186"></a>00186 {
202
<a name="l00187"></a>00187 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
203
<a name="l00188"></a>00188 } ordering;
204
<a name="l00189"></a>00189
205
<a name="l00190"></a>00190 <span class="comment">/* Value of POSIXLY_CORRECT environment variable. */</span>
206
<a name="l00191"></a>00191 <span class="keyword">static</span> <span class="keywordtype">char</span> *posixly_correct;
207
<a name="l00192"></a>00192
208
<a name="l00193"></a>00193 <span class="preprocessor">#ifdef __GNU_LIBRARY__</span>
209
<a name="l00194"></a>00194 <span class="preprocessor"></span><span class="comment">/* We want to avoid inclusion of string.h with non-GNU libraries</span>
210
<a name="l00195"></a>00195 <span class="comment"> because there are many ways it can cause trouble.</span>
211
<a name="l00196"></a>00196 <span class="comment"> On some systems, it contains special magic macros that don't work</span>
212
<a name="l00197"></a>00197 <span class="comment"> in GCC. */</span>
213
<a name="l00198"></a>00198 <span class="preprocessor"># include <string.h></span>
214
<a name="l00199"></a>00199 <span class="preprocessor"># define my_index strchr</span>
215
<a name="l00200"></a>00200 <span class="preprocessor"></span><span class="preprocessor">#else</span>
216
<a name="l00201"></a>00201 <span class="preprocessor"></span>
217
<a name="l00202"></a>00202 <span class="preprocessor"># if HAVE_STRING_H</span>
218
<a name="l00203"></a>00203 <span class="preprocessor"></span><span class="preprocessor"># include <string.h></span>
219
<a name="l00204"></a>00204 <span class="preprocessor"># else</span>
220
<a name="l00205"></a>00205 <span class="preprocessor"></span><span class="preprocessor"># include <strings.h></span>
221
<a name="l00206"></a>00206 <span class="preprocessor"># endif</span>
222
<a name="l00207"></a>00207 <span class="preprocessor"></span>
223
<a name="l00208"></a>00208 <span class="comment">/* Avoid depending on library functions or files</span>
224
<a name="l00209"></a>00209 <span class="comment"> whose names are inconsistent. */</span>
225
<a name="l00210"></a>00210
226
<a name="l00211"></a>00211 <span class="preprocessor">#ifndef getenv</span>
227
<a name="l00212"></a>00212 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="keywordtype">char</span> *getenv ();
228
<a name="l00213"></a>00213 <span class="preprocessor">#endif</span>
229
<a name="l00214"></a>00214 <span class="preprocessor"></span>
230
<a name="l00215"></a>00215 <span class="keyword">static</span> <span class="keywordtype">char</span> *
231
<a name="l00216"></a>00216 my_index (str, chr)
232
<a name="l00217"></a>00217 const <span class="keywordtype">char</span> *str;
233
<a name="l00218"></a>00218 <span class="keywordtype">int</span> chr;
234
<a name="l00219"></a>00219 {
235
<a name="l00220"></a>00220 <span class="keywordflow">while</span> (*str)
236
<a name="l00221"></a>00221 {
237
<a name="l00222"></a>00222 <span class="keywordflow">if</span> (*str == chr)
238
<a name="l00223"></a>00223 <span class="keywordflow">return</span> (<span class="keywordtype">char</span> *) str;
239
<a name="l00224"></a>00224 str++;
240
<a name="l00225"></a>00225 }
241
<a name="l00226"></a>00226 <span class="keywordflow">return</span> 0;
242
<a name="l00227"></a>00227 }
243
<a name="l00228"></a>00228
244
<a name="l00229"></a>00229 <span class="comment">/* If using GCC, we can safely declare strlen this way.</span>
245
<a name="l00230"></a>00230 <span class="comment"> If not using GCC, it is ok not to declare it. */</span>
246
<a name="l00231"></a>00231 <span class="preprocessor">#ifdef __GNUC__</span>
247
<a name="l00232"></a>00232 <span class="preprocessor"></span><span class="comment">/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.</span>
248
<a name="l00233"></a>00233 <span class="comment"> That was relevant to code that was here before. */</span>
249
<a name="l00234"></a>00234 <span class="preprocessor"># if (!defined __STDC__ || !__STDC__) && !defined strlen</span>
250
<a name="l00235"></a>00235 <span class="preprocessor"></span><span class="comment">/* gcc with -traditional declares the built-in strlen to return int,</span>
251
<a name="l00236"></a>00236 <span class="comment"> and has done so at least since version 2.4.5. -- rms. */</span>
252
<a name="l00237"></a>00237 <span class="keyword">extern</span> <span class="keywordtype">int</span> strlen (<span class="keyword">const</span> <span class="keywordtype">char</span> *);
253
<a name="l00238"></a>00238 <span class="preprocessor"># endif </span><span class="comment">/* not __STDC__ */</span>
254
<a name="l00239"></a>00239 <span class="preprocessor">#endif </span><span class="comment">/* __GNUC__ */</span>
255
<a name="l00240"></a>00240
256
<a name="l00241"></a>00241 <span class="preprocessor">#endif </span><span class="comment">/* not __GNU_LIBRARY__ */</span>
257
<a name="l00242"></a>00242
258
<a name="l00243"></a>00243 <span class="comment">/* Handle permutation of arguments. */</span>
259
<a name="l00244"></a>00244
260
<a name="l00245"></a>00245 <span class="comment">/* Describe the part of ARGV that contains non-options that have</span>
261
<a name="l00246"></a>00246 <span class="comment"> been skipped. `first_nonopt' is the index in ARGV of the first of them;</span>
262
<a name="l00247"></a>00247 <span class="comment"> `last_nonopt' is the index after the last of them. */</span>
263
<a name="l00248"></a>00248
264
<a name="l00249"></a>00249 <span class="keyword">static</span> <span class="keywordtype">int</span> first_nonopt;
265
<a name="l00250"></a>00250 <span class="keyword">static</span> <span class="keywordtype">int</span> last_nonopt;
266
<a name="l00251"></a>00251
267
<a name="l00252"></a>00252 <span class="preprocessor">#ifdef _LIBC</span>
268
<a name="l00253"></a>00253 <span class="preprocessor"></span><span class="comment">/* Stored original parameters.</span>
269
<a name="l00254"></a>00254 <span class="comment"> XXX This is no good solution. We should rather copy the args so</span>
270
<a name="l00255"></a>00255 <span class="comment"> that we can compare them later. But we must not use malloc(3). */</span>
271
<a name="l00256"></a>00256 <span class="keyword">extern</span> <span class="keywordtype">int</span> __libc_argc;
272
<a name="l00257"></a>00257 <span class="keyword">extern</span> <span class="keywordtype">char</span> **__libc_argv;
273
<a name="l00258"></a>00258
274
<a name="l00259"></a>00259 <span class="comment">/* Bash 2.0 gives us an environment variable containing flags</span>
275
<a name="l00260"></a>00260 <span class="comment"> indicating ARGV elements that should not be considered arguments. */</span>
276
<a name="l00261"></a>00261
277
<a name="l00262"></a>00262 <span class="preprocessor"># ifdef USE_NONOPTION_FLAGS</span>
278
<a name="l00263"></a>00263 <span class="preprocessor"></span><span class="comment">/* Defined in getopt_init.c */</span>
279
<a name="l00264"></a>00264 <span class="keyword">extern</span> <span class="keywordtype">char</span> *__getopt_nonoption_flags;
280
<a name="l00265"></a>00265
281
<a name="l00266"></a>00266 <span class="keyword">static</span> <span class="keywordtype">int</span> nonoption_flags_max_len;
282
<a name="l00267"></a>00267 <span class="keyword">static</span> <span class="keywordtype">int</span> nonoption_flags_len;
283
<a name="l00268"></a>00268 <span class="preprocessor"># endif</span>
284
<a name="l00269"></a>00269 <span class="preprocessor"></span>
285
<a name="l00270"></a>00270 <span class="preprocessor"># ifdef USE_NONOPTION_FLAGS</span>
286
<a name="l00271"></a>00271 <span class="preprocessor"></span><span class="preprocessor"># define SWAP_FLAGS(ch1, ch2) \</span>
287
<a name="l00272"></a>00272 <span class="preprocessor"> if (nonoption_flags_len > 0) \</span>
288
<a name="l00273"></a>00273 <span class="preprocessor"> { \</span>
289
<a name="l00274"></a>00274 <span class="preprocessor"> char __tmp = __getopt_nonoption_flags[ch1]; \</span>
290
<a name="l00275"></a>00275 <span class="preprocessor"> __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \</span>
291
<a name="l00276"></a>00276 <span class="preprocessor"> __getopt_nonoption_flags[ch2] = __tmp; \</span>
292
<a name="l00277"></a>00277 <span class="preprocessor"> }</span>
293
<a name="l00278"></a>00278 <span class="preprocessor"></span><span class="preprocessor"># else</span>
294
<a name="l00279"></a>00279 <span class="preprocessor"></span><span class="preprocessor"># define SWAP_FLAGS(ch1, ch2)</span>
295
<a name="l00280"></a>00280 <span class="preprocessor"></span><span class="preprocessor"># endif</span>
296
<a name="l00281"></a>00281 <span class="preprocessor"></span><span class="preprocessor">#else </span><span class="comment">/* !_LIBC */</span>
297
<a name="l00282"></a>00282 <span class="preprocessor"># define SWAP_FLAGS(ch1, ch2)</span>
298
<a name="l00283"></a>00283 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* _LIBC */</span>
299
<a name="l00284"></a>00284
300
<a name="l00285"></a>00285 <span class="comment">/* Exchange two adjacent subsequences of ARGV.</span>
301
<a name="l00286"></a>00286 <span class="comment"> One subsequence is elements [first_nonopt,last_nonopt)</span>
302
<a name="l00287"></a>00287 <span class="comment"> which contains all the non-options that have been skipped so far.</span>
303
<a name="l00288"></a>00288 <span class="comment"> The other is elements [last_nonopt,optind), which contains all</span>
304
<a name="l00289"></a>00289 <span class="comment"> the options processed since those non-options were skipped.</span>
305
<a name="l00290"></a>00290 <span class="comment"></span>
306
<a name="l00291"></a>00291 <span class="comment"> `first_nonopt' and `last_nonopt' are relocated so that they describe</span>
307
<a name="l00292"></a>00292 <span class="comment"> the new indices of the non-options in ARGV after they are moved. */</span>
308
<a name="l00293"></a>00293
309
<a name="l00294"></a>00294 <span class="preprocessor">#if defined __STDC__ && __STDC__</span>
310
<a name="l00295"></a>00295 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">void</span> exchange (<span class="keywordtype">char</span> **);
311
<a name="l00296"></a>00296 <span class="preprocessor">#endif</span>
312
<a name="l00297"></a>00297 <span class="preprocessor"></span>
313
<a name="l00298"></a>00298 <span class="keyword">static</span> <span class="keywordtype">void</span>
314
<a name="l00299"></a>00299 exchange (argv)
315
<a name="l00300"></a>00300 char **argv;
316
<a name="l00301"></a>00301 {
317
<a name="l00302"></a>00302 <span class="keywordtype">int</span> bottom = first_nonopt;
318
<a name="l00303"></a>00303 <span class="keywordtype">int</span> middle = last_nonopt;
319
<a name="l00304"></a>00304 <span class="keywordtype">int</span> top = optind;
320
<a name="l00305"></a>00305 <span class="keywordtype">char</span> *tem;
321
<a name="l00306"></a>00306
322
<a name="l00307"></a>00307 <span class="comment">/* Exchange the shorter segment with the far end of the longer segment.</span>
323
<a name="l00308"></a>00308 <span class="comment"> That puts the shorter segment into the right place.</span>
324
<a name="l00309"></a>00309 <span class="comment"> It leaves the longer segment in the right place overall,</span>
325
<a name="l00310"></a>00310 <span class="comment"> but it consists of two parts that need to be swapped next. */</span>
326
<a name="l00311"></a>00311
327
<a name="l00312"></a>00312 <span class="preprocessor">#if defined _LIBC && defined USE_NONOPTION_FLAGS</span>
328
<a name="l00313"></a>00313 <span class="preprocessor"></span> <span class="comment">/* First make sure the handling of the `__getopt_nonoption_flags'</span>
329
<a name="l00314"></a>00314 <span class="comment"> string can work normally. Our top argument must be in the range</span>
330
<a name="l00315"></a>00315 <span class="comment"> of the string. */</span>
331
<a name="l00316"></a>00316 <span class="keywordflow">if</span> (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
332
<a name="l00317"></a>00317 {
333
<a name="l00318"></a>00318 <span class="comment">/* We must extend the array. The user plays games with us and</span>
334
<a name="l00319"></a>00319 <span class="comment"> presents new arguments. */</span>
335
<a name="l00320"></a>00320 <span class="keywordtype">char</span> *new_str = malloc (top + 1);
336
<a name="l00321"></a>00321 <span class="keywordflow">if</span> (new_str == NULL)
337
<a name="l00322"></a>00322 nonoption_flags_len = nonoption_flags_max_len = 0;
338
<a name="l00323"></a>00323 <span class="keywordflow">else</span>
339
<a name="l00324"></a>00324 {
340
<a name="l00325"></a>00325 memset (__mempcpy (new_str, __getopt_nonoption_flags,
341
<a name="l00326"></a>00326 nonoption_flags_max_len),
342
<a name="l00327"></a>00327 <span class="charliteral">'\0'</span>, top + 1 - nonoption_flags_max_len);
343
<a name="l00328"></a>00328 nonoption_flags_max_len = top + 1;
344
<a name="l00329"></a>00329 __getopt_nonoption_flags = new_str;
345
<a name="l00330"></a>00330 }
346
<a name="l00331"></a>00331 }
347
<a name="l00332"></a>00332 <span class="preprocessor">#endif</span>
348
<a name="l00333"></a>00333 <span class="preprocessor"></span>
349
<a name="l00334"></a>00334 <span class="keywordflow">while</span> (top > middle && middle > bottom)
350
<a name="l00335"></a>00335 {
351
<a name="l00336"></a>00336 <span class="keywordflow">if</span> (top - middle > middle - bottom)
352
<a name="l00337"></a>00337 {
353
<a name="l00338"></a>00338 <span class="comment">/* Bottom segment is the short one. */</span>
354
<a name="l00339"></a>00339 <span class="keywordtype">int</span> len = middle - bottom;
355
<a name="l00340"></a>00340 <span class="keyword">register</span> <span class="keywordtype">int</span> i;
356
<a name="l00341"></a>00341
357
<a name="l00342"></a>00342 <span class="comment">/* Swap it with the top part of the top segment. */</span>
358
<a name="l00343"></a>00343 <span class="keywordflow">for</span> (i = 0; i < len; i++)
359
<a name="l00344"></a>00344 {
360
<a name="l00345"></a>00345 tem = argv[bottom + i];
361
<a name="l00346"></a>00346 argv[bottom + i] = argv[top - (middle - bottom) + i];
362
<a name="l00347"></a>00347 argv[top - (middle - bottom) + i] = tem;
363
<a name="l00348"></a>00348 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
364
<a name="l00349"></a>00349 }
365
<a name="l00350"></a>00350 <span class="comment">/* Exclude the moved bottom segment from further swapping. */</span>
366
<a name="l00351"></a>00351 top -= len;
367
<a name="l00352"></a>00352 }
368
<a name="l00353"></a>00353 <span class="keywordflow">else</span>
369
<a name="l00354"></a>00354 {
370
<a name="l00355"></a>00355 <span class="comment">/* Top segment is the short one. */</span>
371
<a name="l00356"></a>00356 <span class="keywordtype">int</span> len = top - middle;
372
<a name="l00357"></a>00357 <span class="keyword">register</span> <span class="keywordtype">int</span> i;
373
<a name="l00358"></a>00358
374
<a name="l00359"></a>00359 <span class="comment">/* Swap it with the bottom part of the bottom segment. */</span>
375
<a name="l00360"></a>00360 <span class="keywordflow">for</span> (i = 0; i < len; i++)
376
<a name="l00361"></a>00361 {
377
<a name="l00362"></a>00362 tem = argv[bottom + i];
378
<a name="l00363"></a>00363 argv[bottom + i] = argv[middle + i];
379
<a name="l00364"></a>00364 argv[middle + i] = tem;
380
<a name="l00365"></a>00365 SWAP_FLAGS (bottom + i, middle + i);
381
<a name="l00366"></a>00366 }
382
<a name="l00367"></a>00367 <span class="comment">/* Exclude the moved top segment from further swapping. */</span>
383
<a name="l00368"></a>00368 bottom += len;
384
<a name="l00369"></a>00369 }
385
<a name="l00370"></a>00370 }
386
<a name="l00371"></a>00371
387
<a name="l00372"></a>00372 <span class="comment">/* Update records for the slots the non-options now occupy. */</span>
388
<a name="l00373"></a>00373
389
<a name="l00374"></a>00374 first_nonopt += (optind - last_nonopt);
390
<a name="l00375"></a>00375 last_nonopt = optind;
391
<a name="l00376"></a>00376 }
392
<a name="l00377"></a>00377
393
<a name="l00378"></a>00378 <span class="comment">/* Initialize the internal data when the first call is made. */</span>
394
<a name="l00379"></a>00379
395
<a name="l00380"></a>00380 <span class="preprocessor">#if defined __STDC__ && __STDC__</span>
396
<a name="l00381"></a>00381 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *_getopt_initialize (<span class="keywordtype">int</span>, <span class="keywordtype">char</span> *<span class="keyword">const</span> *, <span class="keyword">const</span> <span class="keywordtype">char</span> *);
397
<a name="l00382"></a>00382 <span class="preprocessor">#endif</span>
398
<a name="l00383"></a>00383 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *
399
<a name="l00384"></a>00384 _getopt_initialize (argc, argv, optstring)
400
<a name="l00385"></a>00385 int argc;
401
<a name="l00386"></a>00386 <span class="keywordtype">char</span> *const *argv;
402
<a name="l00387"></a>00387 const <span class="keywordtype">char</span> *optstring;
403
<a name="l00388"></a>00388 {
404
<a name="l00389"></a>00389 <span class="comment">/* Start processing options with ARGV-element 1 (since ARGV-element 0</span>
405
<a name="l00390"></a>00390 <span class="comment"> is the program name); the sequence of previously skipped</span>
406
<a name="l00391"></a>00391 <span class="comment"> non-option ARGV-elements is empty. */</span>
407
<a name="l00392"></a>00392
408
<a name="l00393"></a>00393 first_nonopt = last_nonopt = optind;
409
<a name="l00394"></a>00394
410
<a name="l00395"></a>00395 nextchar = NULL;
411
<a name="l00396"></a>00396
412
<a name="l00397"></a>00397 posixly_correct = getenv (<span class="stringliteral">"POSIXLY_CORRECT"</span>);
413
<a name="l00398"></a>00398
414
<a name="l00399"></a>00399 <span class="comment">/* Determine how to handle the ordering of options and nonoptions. */</span>
415
<a name="l00400"></a>00400
416
<a name="l00401"></a>00401 <span class="keywordflow">if</span> (optstring[0] == <span class="charliteral">'-'</span>)
417
<a name="l00402"></a>00402 {
418
<a name="l00403"></a>00403 ordering = RETURN_IN_ORDER;
419
<a name="l00404"></a>00404 ++optstring;
420
<a name="l00405"></a>00405 }
421
<a name="l00406"></a>00406 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (optstring[0] == <span class="charliteral">'+'</span>)
422
<a name="l00407"></a>00407 {
423
<a name="l00408"></a>00408 ordering = REQUIRE_ORDER;
424
<a name="l00409"></a>00409 ++optstring;
425
<a name="l00410"></a>00410 }
426
<a name="l00411"></a>00411 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (posixly_correct != NULL)
427
<a name="l00412"></a>00412 ordering = REQUIRE_ORDER;
428
<a name="l00413"></a>00413 <span class="keywordflow">else</span>
429
<a name="l00414"></a>00414 ordering = PERMUTE;
430
<a name="l00415"></a>00415
431
<a name="l00416"></a>00416 <span class="preprocessor">#if defined _LIBC && defined USE_NONOPTION_FLAGS</span>
432
<a name="l00417"></a>00417 <span class="preprocessor"></span> <span class="keywordflow">if</span> (posixly_correct == NULL
433
<a name="l00418"></a>00418 && argc == __libc_argc && argv == __libc_argv)
434
<a name="l00419"></a>00419 {
435
<a name="l00420"></a>00420 <span class="keywordflow">if</span> (nonoption_flags_max_len == 0)
436
<a name="l00421"></a>00421 {
437
<a name="l00422"></a>00422 <span class="keywordflow">if</span> (__getopt_nonoption_flags == NULL
438
<a name="l00423"></a>00423 || __getopt_nonoption_flags[0] == <span class="charliteral">'\0'</span>)
439
<a name="l00424"></a>00424 nonoption_flags_max_len = -1;
440
<a name="l00425"></a>00425 <span class="keywordflow">else</span>
441
<a name="l00426"></a>00426 {
442
<a name="l00427"></a>00427 <span class="keyword">const</span> <span class="keywordtype">char</span> *orig_str = __getopt_nonoption_flags;
443
<a name="l00428"></a>00428 <span class="keywordtype">int</span> len = nonoption_flags_max_len = strlen (orig_str);
444
<a name="l00429"></a>00429 <span class="keywordflow">if</span> (nonoption_flags_max_len < argc)
445
<a name="l00430"></a>00430 nonoption_flags_max_len = argc;
446
<a name="l00431"></a>00431 __getopt_nonoption_flags =
447
<a name="l00432"></a>00432 (<span class="keywordtype">char</span> *) malloc (nonoption_flags_max_len);
448
<a name="l00433"></a>00433 <span class="keywordflow">if</span> (__getopt_nonoption_flags == NULL)
449
<a name="l00434"></a>00434 nonoption_flags_max_len = -1;
450
<a name="l00435"></a>00435 <span class="keywordflow">else</span>
451
<a name="l00436"></a>00436 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
452
<a name="l00437"></a>00437 <span class="charliteral">'\0'</span>, nonoption_flags_max_len - len);
453
<a name="l00438"></a>00438 }
454
<a name="l00439"></a>00439 }
455
<a name="l00440"></a>00440 nonoption_flags_len = nonoption_flags_max_len;
456
<a name="l00441"></a>00441 }
457
<a name="l00442"></a>00442 <span class="keywordflow">else</span>
458
<a name="l00443"></a>00443 nonoption_flags_len = 0;
459
<a name="l00444"></a>00444 <span class="preprocessor">#endif</span>
460
<a name="l00445"></a>00445 <span class="preprocessor"></span>
461
<a name="l00446"></a>00446 <span class="keywordflow">return</span> optstring;
462
<a name="l00447"></a>00447 }
463
<a name="l00448"></a>00448
464
<a name="l00449"></a>00449 <span class="comment">/* Scan elements of ARGV (whose length is ARGC) for option characters</span>
465
<a name="l00450"></a>00450 <span class="comment"> given in OPTSTRING.</span>
466
<a name="l00451"></a>00451 <span class="comment"></span>
467
<a name="l00452"></a>00452 <span class="comment"> If an element of ARGV starts with '-', and is not exactly "-" or "--",</span>
468
<a name="l00453"></a>00453 <span class="comment"> then it is an option element. The characters of this element</span>
469
<a name="l00454"></a>00454 <span class="comment"> (aside from the initial '-') are option characters. If `getopt'</span>
470
<a name="l00455"></a>00455 <span class="comment"> is called repeatedly, it returns successively each of the option characters</span>
471
<a name="l00456"></a>00456 <span class="comment"> from each of the option elements.</span>
472
<a name="l00457"></a>00457 <span class="comment"></span>
473
<a name="l00458"></a>00458 <span class="comment"> If `getopt' finds another option character, it returns that character,</span>
474
<a name="l00459"></a>00459 <span class="comment"> updating `optind' and `nextchar' so that the next call to `getopt' can</span>
475
<a name="l00460"></a>00460 <span class="comment"> resume the scan with the following option character or ARGV-element.</span>
476
<a name="l00461"></a>00461 <span class="comment"></span>
477
<a name="l00462"></a>00462 <span class="comment"> If there are no more option characters, `getopt' returns -1.</span>
478
<a name="l00463"></a>00463 <span class="comment"> Then `optind' is the index in ARGV of the first ARGV-element</span>
479
<a name="l00464"></a>00464 <span class="comment"> that is not an option. (The ARGV-elements have been permuted</span>
480
<a name="l00465"></a>00465 <span class="comment"> so that those that are not options now come last.)</span>
481
<a name="l00466"></a>00466 <span class="comment"></span>
482
<a name="l00467"></a>00467 <span class="comment"> OPTSTRING is a string containing the legitimate option characters.</span>
483
<a name="l00468"></a>00468 <span class="comment"> If an option character is seen that is not listed in OPTSTRING,</span>
484
<a name="l00469"></a>00469 <span class="comment"> return '?' after printing an error message. If you set `opterr' to</span>
485
<a name="l00470"></a>00470 <span class="comment"> zero, the error message is suppressed but we still return '?'.</span>
486
<a name="l00471"></a>00471 <span class="comment"></span>
487
<a name="l00472"></a>00472 <span class="comment"> If a char in OPTSTRING is followed by a colon, that means it wants an arg,</span>
488
<a name="l00473"></a>00473 <span class="comment"> so the following text in the same ARGV-element, or the text of the following</span>
489
<a name="l00474"></a>00474 <span class="comment"> ARGV-element, is returned in `optarg'. Two colons mean an option that</span>
490
<a name="l00475"></a>00475 <span class="comment"> wants an optional arg; if there is text in the current ARGV-element,</span>
491
<a name="l00476"></a>00476 <span class="comment"> it is returned in `optarg', otherwise `optarg' is set to zero.</span>
492
<a name="l00477"></a>00477 <span class="comment"></span>
493
<a name="l00478"></a>00478 <span class="comment"> If OPTSTRING starts with `-' or `+', it requests different methods of</span>
494
<a name="l00479"></a>00479 <span class="comment"> handling the non-option ARGV-elements.</span>
495
<a name="l00480"></a>00480 <span class="comment"> See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.</span>
496
<a name="l00481"></a>00481 <span class="comment"></span>
497
<a name="l00482"></a>00482 <span class="comment"> Long-named options begin with `--' instead of `-'.</span>
498
<a name="l00483"></a>00483 <span class="comment"> Their names may be abbreviated as long as the abbreviation is unique</span>
499
<a name="l00484"></a>00484 <span class="comment"> or is an exact match for some defined option. If they have an</span>
500
<a name="l00485"></a>00485 <span class="comment"> argument, it follows the option name in the same ARGV-element, separated</span>
501
<a name="l00486"></a>00486 <span class="comment"> from the option name by a `=', or else the in next ARGV-element.</span>
502
<a name="l00487"></a>00487 <span class="comment"> When `getopt' finds a long-named option, it returns 0 if that option's</span>
503
<a name="l00488"></a>00488 <span class="comment"> `flag' field is nonzero, the value of the option's `val' field</span>
504
<a name="l00489"></a>00489 <span class="comment"> if the `flag' field is zero.</span>
505
<a name="l00490"></a>00490 <span class="comment"></span>
506
<a name="l00491"></a>00491 <span class="comment"> The elements of ARGV aren't really const, because we permute them.</span>
507
<a name="l00492"></a>00492 <span class="comment"> But we pretend they're const in the prototype to be compatible</span>
508
<a name="l00493"></a>00493 <span class="comment"> with other systems.</span>
509
<a name="l00494"></a>00494 <span class="comment"></span>
510
<a name="l00495"></a>00495 <span class="comment"> LONGOPTS is a vector of `struct option' terminated by an</span>
511
<a name="l00496"></a>00496 <span class="comment"> element containing a name which is zero.</span>
512
<a name="l00497"></a>00497 <span class="comment"></span>
513
<a name="l00498"></a>00498 <span class="comment"> LONGIND returns the index in LONGOPT of the long-named option found.</span>
514
<a name="l00499"></a>00499 <span class="comment"> It is only valid when a long-named option has been found by the most</span>
515
<a name="l00500"></a>00500 <span class="comment"> recent call.</span>
516
<a name="l00501"></a>00501 <span class="comment"></span>
517
<a name="l00502"></a>00502 <span class="comment"> If LONG_ONLY is nonzero, '-' as well as '--' can introduce</span>
518
<a name="l00503"></a>00503 <span class="comment"> long-named options. */</span>
519
<a name="l00504"></a>00504
520
<a name="l00505"></a>00505 <span class="keywordtype">int</span>
521
<a name="l00506"></a>00506 _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
522
<a name="l00507"></a>00507 int argc;
523
<a name="l00508"></a>00508 <span class="keywordtype">char</span> *const *argv;
524
<a name="l00509"></a>00509 const <span class="keywordtype">char</span> *optstring;
525
<a name="l00510"></a>00510 const struct <a class="code" href="structoption.html">option</a> *longopts;
526
<a name="l00511"></a>00511 <span class="keywordtype">int</span> *longind;
527
<a name="l00512"></a>00512 <span class="keywordtype">int</span> long_only;
528
<a name="l00513"></a>00513 {
529
<a name="l00514"></a>00514 <span class="keywordtype">int</span> print_errors = opterr;
530
<a name="l00515"></a>00515 <span class="keywordflow">if</span> (optstring[0] == <span class="charliteral">':'</span>)
531
<a name="l00516"></a>00516 print_errors = 0;
532
<a name="l00517"></a>00517
533
<a name="l00518"></a>00518 <span class="keywordflow">if</span> (argc < 1)
534
<a name="l00519"></a>00519 <span class="keywordflow">return</span> -1;
535
<a name="l00520"></a>00520
536
<a name="l00521"></a>00521 optarg = NULL;
537
<a name="l00522"></a>00522
538
<a name="l00523"></a>00523 <span class="keywordflow">if</span> (optind == 0 || !__getopt_initialized)
539
<a name="l00524"></a>00524 {
540
<a name="l00525"></a>00525 <span class="keywordflow">if</span> (optind == 0)
541
<a name="l00526"></a>00526 optind = 1; <span class="comment">/* Don't scan ARGV[0], the program name. */</span>
542
<a name="l00527"></a>00527 optstring = _getopt_initialize (argc, argv, optstring);
543
<a name="l00528"></a>00528 __getopt_initialized = 1;
544
<a name="l00529"></a>00529 }
545
<a name="l00530"></a>00530
546
<a name="l00531"></a>00531 <span class="comment">/* Test whether ARGV[optind] points to a non-option argument.</span>
547
<a name="l00532"></a>00532 <span class="comment"> Either it does not have option syntax, or there is an environment flag</span>
548
<a name="l00533"></a>00533 <span class="comment"> from the shell indicating it is not an option. The later information</span>
549
<a name="l00534"></a>00534 <span class="comment"> is only used when the used in the GNU libc. */</span>
550
<a name="l00535"></a>00535 <span class="preprocessor">#if defined _LIBC && defined USE_NONOPTION_FLAGS</span>
551
<a name="l00536"></a>00536 <span class="preprocessor"></span><span class="preprocessor"># define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \</span>
552
<a name="l00537"></a>00537 <span class="preprocessor"> || (optind < nonoption_flags_len \</span>
553
<a name="l00538"></a>00538 <span class="preprocessor"> && __getopt_nonoption_flags[optind] == '1'))</span>
554
<a name="l00539"></a>00539 <span class="preprocessor"></span><span class="preprocessor">#else</span>
555
<a name="l00540"></a>00540 <span class="preprocessor"></span><span class="preprocessor"># define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')</span>
556
<a name="l00541"></a>00541 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
557
<a name="l00542"></a>00542 <span class="preprocessor"></span>
558
<a name="l00543"></a>00543 <span class="keywordflow">if</span> (nextchar == NULL || *nextchar == <span class="charliteral">'\0'</span>)
559
<a name="l00544"></a>00544 {
560
<a name="l00545"></a>00545 <span class="comment">/* Advance to the next ARGV-element. */</span>
561
<a name="l00546"></a>00546
562
<a name="l00547"></a>00547 <span class="comment">/* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been</span>
563
<a name="l00548"></a>00548 <span class="comment"> moved back by the user (who may also have changed the arguments). */</span>
564
<a name="l00549"></a>00549 <span class="keywordflow">if</span> (last_nonopt > optind)
565
<a name="l00550"></a>00550 last_nonopt = optind;
566
<a name="l00551"></a>00551 <span class="keywordflow">if</span> (first_nonopt > optind)
567
<a name="l00552"></a>00552 first_nonopt = optind;
568
<a name="l00553"></a>00553
569
<a name="l00554"></a>00554 <span class="keywordflow">if</span> (ordering == PERMUTE)
570
<a name="l00555"></a>00555 {
571
<a name="l00556"></a>00556 <span class="comment">/* If we have just processed some options following some non-options,</span>
572
<a name="l00557"></a>00557 <span class="comment"> exchange them so that the options come first. */</span>
573
<a name="l00558"></a>00558
574
<a name="l00559"></a>00559 <span class="keywordflow">if</span> (first_nonopt != last_nonopt && last_nonopt != optind)
575
<a name="l00560"></a>00560 exchange ((<span class="keywordtype">char</span> **) argv);
576
<a name="l00561"></a>00561 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (last_nonopt != optind)
577
<a name="l00562"></a>00562 first_nonopt = optind;
578
<a name="l00563"></a>00563
579
<a name="l00564"></a>00564 <span class="comment">/* Skip any additional non-options</span>
580
<a name="l00565"></a>00565 <span class="comment"> and extend the range of non-options previously skipped. */</span>
581
<a name="l00566"></a>00566
582
<a name="l00567"></a>00567 <span class="keywordflow">while</span> (optind < argc && NONOPTION_P)
583
<a name="l00568"></a>00568 optind++;
584
<a name="l00569"></a>00569 last_nonopt = optind;
585
<a name="l00570"></a>00570 }
586
<a name="l00571"></a>00571
587
<a name="l00572"></a>00572 <span class="comment">/* The special ARGV-element `--' means premature end of options.</span>
588
<a name="l00573"></a>00573 <span class="comment"> Skip it like a null option,</span>
589
<a name="l00574"></a>00574 <span class="comment"> then exchange with previous non-options as if it were an option,</span>
590
<a name="l00575"></a>00575 <span class="comment"> then skip everything else like a non-option. */</span>
591
<a name="l00576"></a>00576
592
<a name="l00577"></a>00577 <span class="keywordflow">if</span> (optind != argc && !strcmp (argv[optind], <span class="stringliteral">"--"</span>))
593
<a name="l00578"></a>00578 {
594
<a name="l00579"></a>00579 optind++;
595
<a name="l00580"></a>00580
596
<a name="l00581"></a>00581 <span class="keywordflow">if</span> (first_nonopt != last_nonopt && last_nonopt != optind)
597
<a name="l00582"></a>00582 exchange ((<span class="keywordtype">char</span> **) argv);
598
<a name="l00583"></a>00583 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (first_nonopt == last_nonopt)
599
<a name="l00584"></a>00584 first_nonopt = optind;
600
<a name="l00585"></a>00585 last_nonopt = argc;
601
<a name="l00586"></a>00586
602
<a name="l00587"></a>00587 optind = argc;
603
<a name="l00588"></a>00588 }
604
<a name="l00589"></a>00589
605
<a name="l00590"></a>00590 <span class="comment">/* If we have done all the ARGV-elements, stop the scan</span>
606
<a name="l00591"></a>00591 <span class="comment"> and back over any non-options that we skipped and permuted. */</span>
607
<a name="l00592"></a>00592
608
<a name="l00593"></a>00593 <span class="keywordflow">if</span> (optind == argc)
609
<a name="l00594"></a>00594 {
610
<a name="l00595"></a>00595 <span class="comment">/* Set the next-arg-index to point at the non-options</span>
611
<a name="l00596"></a>00596 <span class="comment"> that we previously skipped, so the caller will digest them. */</span>
612
<a name="l00597"></a>00597 <span class="keywordflow">if</span> (first_nonopt != last_nonopt)
613
<a name="l00598"></a>00598 optind = first_nonopt;
614
<a name="l00599"></a>00599 <span class="keywordflow">return</span> -1;
615
<a name="l00600"></a>00600 }
616
<a name="l00601"></a>00601
617
<a name="l00602"></a>00602 <span class="comment">/* If we have come to a non-option and did not permute it,</span>
618
<a name="l00603"></a>00603 <span class="comment"> either stop the scan or describe it to the caller and pass it by. */</span>
619
<a name="l00604"></a>00604
620
<a name="l00605"></a>00605 <span class="keywordflow">if</span> (NONOPTION_P)
621
<a name="l00606"></a>00606 {
622
<a name="l00607"></a>00607 <span class="keywordflow">if</span> (ordering == REQUIRE_ORDER)
623
<a name="l00608"></a>00608 <span class="keywordflow">return</span> -1;
624
<a name="l00609"></a>00609 optarg = argv[optind++];
625
<a name="l00610"></a>00610 <span class="keywordflow">return</span> 1;
626
<a name="l00611"></a>00611 }
627
<a name="l00612"></a>00612
628
<a name="l00613"></a>00613 <span class="comment">/* We have found another option-ARGV-element.</span>
629
<a name="l00614"></a>00614 <span class="comment"> Skip the initial punctuation. */</span>
630
<a name="l00615"></a>00615
631
<a name="l00616"></a>00616 nextchar = (argv[optind] + 1
632
<a name="l00617"></a>00617 + (longopts != NULL && argv[optind][1] == <span class="charliteral">'-'</span>));
633
<a name="l00618"></a>00618 }
634
<a name="l00619"></a>00619
635
<a name="l00620"></a>00620 <span class="comment">/* Decode the current option-ARGV-element. */</span>
636
<a name="l00621"></a>00621
637
<a name="l00622"></a>00622 <span class="comment">/* Check whether the ARGV-element is a long option.</span>
638
<a name="l00623"></a>00623 <span class="comment"></span>
639
<a name="l00624"></a>00624 <span class="comment"> If long_only and the ARGV-element has the form "-f", where f is</span>
640
<a name="l00625"></a>00625 <span class="comment"> a valid short option, don't consider it an abbreviated form of</span>
641
<a name="l00626"></a>00626 <span class="comment"> a long option that starts with f. Otherwise there would be no</span>
642
<a name="l00627"></a>00627 <span class="comment"> way to give the -f short option.</span>
643
<a name="l00628"></a>00628 <span class="comment"></span>
644
<a name="l00629"></a>00629 <span class="comment"> On the other hand, if there's a long option "fubar" and</span>
645
<a name="l00630"></a>00630 <span class="comment"> the ARGV-element is "-fu", do consider that an abbreviation of</span>
646
<a name="l00631"></a>00631 <span class="comment"> the long option, just like "--fu", and not "-f" with arg "u".</span>
647
<a name="l00632"></a>00632 <span class="comment"></span>
648
<a name="l00633"></a>00633 <span class="comment"> This distinction seems to be the most useful approach. */</span>
649
<a name="l00634"></a>00634
650
<a name="l00635"></a>00635 <span class="keywordflow">if</span> (longopts != NULL
651
<a name="l00636"></a>00636 && (argv[optind][1] == <span class="charliteral">'-'</span>
652
<a name="l00637"></a>00637 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
653
<a name="l00638"></a>00638 {
654
<a name="l00639"></a>00639 <span class="keywordtype">char</span> *nameend;
655
<a name="l00640"></a>00640 <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structoption.html">option</a> *p;
656
<a name="l00641"></a>00641 <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structoption.html">option</a> *pfound = NULL;
657
<a name="l00642"></a>00642 <span class="keywordtype">int</span> exact = 0;
658
<a name="l00643"></a>00643 <span class="keywordtype">int</span> ambig = 0;
659
<a name="l00644"></a>00644 <span class="keywordtype">int</span> indfound = -1;
660
<a name="l00645"></a>00645 <span class="keywordtype">int</span> option_index;
661
<a name="l00646"></a>00646
662
<a name="l00647"></a>00647 <span class="keywordflow">for</span> (nameend = nextchar; *nameend && *nameend != <span class="charliteral">'='</span>; nameend++)
663
<a name="l00648"></a>00648 <span class="comment">/* Do nothing. */</span> ;
664
<a name="l00649"></a>00649
665
<a name="l00650"></a>00650 <span class="comment">/* Test all long options for either exact match</span>
666
<a name="l00651"></a>00651 <span class="comment"> or abbreviated matches. */</span>
667
<a name="l00652"></a>00652 <span class="keywordflow">for</span> (p = longopts, option_index = 0; p-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>; p++, option_index++)
668
<a name="l00653"></a>00653 <span class="keywordflow">if</span> (!strncmp (p-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>, nextchar, nameend - nextchar))
669
<a name="l00654"></a>00654 {
670
<a name="l00655"></a>00655 <span class="keywordflow">if</span> ((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) (nameend - nextchar)
671
<a name="l00656"></a>00656 == (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) strlen (p-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>))
672
<a name="l00657"></a>00657 {
673
<a name="l00658"></a>00658 <span class="comment">/* Exact match found. */</span>
674
<a name="l00659"></a>00659 pfound = p;
675
<a name="l00660"></a>00660 indfound = option_index;
676
<a name="l00661"></a>00661 exact = 1;
677
<a name="l00662"></a>00662 <span class="keywordflow">break</span>;
678
<a name="l00663"></a>00663 }
679
<a name="l00664"></a>00664 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pfound == NULL)
680
<a name="l00665"></a>00665 {
681
<a name="l00666"></a>00666 <span class="comment">/* First nonexact match found. */</span>
682
<a name="l00667"></a>00667 pfound = p;
683
<a name="l00668"></a>00668 indfound = option_index;
684
<a name="l00669"></a>00669 }
685
<a name="l00670"></a>00670 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (long_only
686
<a name="l00671"></a>00671 || pfound-><a class="code" href="structoption.html#90d7ee9a51eea5c002682dbd0af149e4">has_arg</a> != p-><a class="code" href="structoption.html#90d7ee9a51eea5c002682dbd0af149e4">has_arg</a>
687
<a name="l00672"></a>00672 || pfound-><a class="code" href="structoption.html#b366eea5fe7be25c1928328ba715e353">flag</a> != p-><a class="code" href="structoption.html#b366eea5fe7be25c1928328ba715e353">flag</a>
688
<a name="l00673"></a>00673 || pfound-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a> != p-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a>)
689
<a name="l00674"></a>00674 <span class="comment">/* Second or later nonexact match found. */</span>
690
<a name="l00675"></a>00675 ambig = 1;
691
<a name="l00676"></a>00676 }
692
<a name="l00677"></a>00677
693
<a name="l00678"></a>00678 <span class="keywordflow">if</span> (ambig && !exact)
694
<a name="l00679"></a>00679 {
695
<a name="l00680"></a>00680 <span class="keywordflow">if</span> (print_errors)
696
<a name="l00681"></a>00681 fprintf (stderr, _(<span class="stringliteral">"%s: option `%s' is ambiguous\n"</span>),
697
<a name="l00682"></a>00682 argv[0], argv[optind]);
698
<a name="l00683"></a>00683 nextchar += strlen (nextchar);
699
<a name="l00684"></a>00684 optind++;
700
<a name="l00685"></a>00685 optopt = 0;
701
<a name="l00686"></a>00686 <span class="keywordflow">return</span> <span class="charliteral">'?'</span>;
702
<a name="l00687"></a>00687 }
703
<a name="l00688"></a>00688
704
<a name="l00689"></a>00689 <span class="keywordflow">if</span> (pfound != NULL)
705
<a name="l00690"></a>00690 {
706
<a name="l00691"></a>00691 option_index = indfound;
707
<a name="l00692"></a>00692 optind++;
708
<a name="l00693"></a>00693 <span class="keywordflow">if</span> (*nameend)
709
<a name="l00694"></a>00694 {
710
<a name="l00695"></a>00695 <span class="comment">/* Don't test has_arg with >, because some C compilers don't</span>
711
<a name="l00696"></a>00696 <span class="comment"> allow it to be used on enums. */</span>
712
<a name="l00697"></a>00697 <span class="keywordflow">if</span> (pfound-><a class="code" href="structoption.html#90d7ee9a51eea5c002682dbd0af149e4">has_arg</a>)
713
<a name="l00698"></a>00698 optarg = nameend + 1;
714
<a name="l00699"></a>00699 <span class="keywordflow">else</span>
715
<a name="l00700"></a>00700 {
716
<a name="l00701"></a>00701 <span class="keywordflow">if</span> (print_errors)
717
<a name="l00702"></a>00702 {
718
<a name="l00703"></a>00703 <span class="keywordflow">if</span> (argv[optind - 1][1] == <span class="charliteral">'-'</span>)
719
<a name="l00704"></a>00704 <span class="comment">/* --option */</span>
720
<a name="l00705"></a>00705 fprintf (stderr,
721
<a name="l00706"></a>00706 _(<span class="stringliteral">"%s: option `--%s' doesn't allow an argument\n"</span>),
722
<a name="l00707"></a>00707 argv[0], pfound-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>);
723
<a name="l00708"></a>00708 <span class="keywordflow">else</span>
724
<a name="l00709"></a>00709 <span class="comment">/* +option or -option */</span>
725
<a name="l00710"></a>00710 fprintf (stderr,
726
<a name="l00711"></a>00711 _(<span class="stringliteral">"%s: option `%c%s' doesn't allow an argument\n"</span>),
727
<a name="l00712"></a>00712 argv[0], argv[optind - 1][0], pfound-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>);
728
<a name="l00713"></a>00713 }
729
<a name="l00714"></a>00714
730
<a name="l00715"></a>00715 nextchar += strlen (nextchar);
731
<a name="l00716"></a>00716
732
<a name="l00717"></a>00717 optopt = pfound-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a>;
733
<a name="l00718"></a>00718 <span class="keywordflow">return</span> <span class="charliteral">'?'</span>;
734
<a name="l00719"></a>00719 }
735
<a name="l00720"></a>00720 }
736
<a name="l00721"></a>00721 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pfound-><a class="code" href="structoption.html#90d7ee9a51eea5c002682dbd0af149e4">has_arg</a> == 1)
737
<a name="l00722"></a>00722 {
738
<a name="l00723"></a>00723 <span class="keywordflow">if</span> (optind < argc)
739
<a name="l00724"></a>00724 optarg = argv[optind++];
740
<a name="l00725"></a>00725 <span class="keywordflow">else</span>
741
<a name="l00726"></a>00726 {
742
<a name="l00727"></a>00727 <span class="keywordflow">if</span> (print_errors)
743
<a name="l00728"></a>00728 fprintf (stderr,
744
<a name="l00729"></a>00729 _(<span class="stringliteral">"%s: option `%s' requires an argument\n"</span>),
745
<a name="l00730"></a>00730 argv[0], argv[optind - 1]);
746
<a name="l00731"></a>00731 nextchar += strlen (nextchar);
747
<a name="l00732"></a>00732 optopt = pfound-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a>;
748
<a name="l00733"></a>00733 <span class="keywordflow">return</span> optstring[0] == <span class="charliteral">':'</span> ? <span class="charliteral">':'</span> : <span class="charliteral">'?'</span>;
749
<a name="l00734"></a>00734 }
750
<a name="l00735"></a>00735 }
751
<a name="l00736"></a>00736 nextchar += strlen (nextchar);
752
<a name="l00737"></a>00737 <span class="keywordflow">if</span> (longind != NULL)
753
<a name="l00738"></a>00738 *longind = option_index;
754
<a name="l00739"></a>00739 <span class="keywordflow">if</span> (pfound-><a class="code" href="structoption.html#b366eea5fe7be25c1928328ba715e353">flag</a>)
755
<a name="l00740"></a>00740 {
756
<a name="l00741"></a>00741 *(pfound-><a class="code" href="structoption.html#b366eea5fe7be25c1928328ba715e353">flag</a>) = pfound-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a>;
757
<a name="l00742"></a>00742 <span class="keywordflow">return</span> 0;
758
<a name="l00743"></a>00743 }
759
<a name="l00744"></a>00744 <span class="keywordflow">return</span> pfound-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a>;
760
<a name="l00745"></a>00745 }
761
<a name="l00746"></a>00746
762
<a name="l00747"></a>00747 <span class="comment">/* Can't find it as a long option. If this is not getopt_long_only,</span>
763
<a name="l00748"></a>00748 <span class="comment"> or the option starts with '--' or is not a valid short</span>
764
<a name="l00749"></a>00749 <span class="comment"> option, then it's an error.</span>
765
<a name="l00750"></a>00750 <span class="comment"> Otherwise interpret it as a short option. */</span>
766
<a name="l00751"></a>00751 <span class="keywordflow">if</span> (!long_only || argv[optind][1] == <span class="charliteral">'-'</span>
767
<a name="l00752"></a>00752 || my_index (optstring, *nextchar) == NULL)
768
<a name="l00753"></a>00753 {
769
<a name="l00754"></a>00754 <span class="keywordflow">if</span> (print_errors)
770
<a name="l00755"></a>00755 {
771
<a name="l00756"></a>00756 <span class="keywordflow">if</span> (argv[optind][1] == <span class="charliteral">'-'</span>)
772
<a name="l00757"></a>00757 <span class="comment">/* --option */</span>
773
<a name="l00758"></a>00758 fprintf (stderr, _(<span class="stringliteral">"%s: unrecognized option `--%s'\n"</span>),
774
<a name="l00759"></a>00759 argv[0], nextchar);
775
<a name="l00760"></a>00760 <span class="keywordflow">else</span>
776
<a name="l00761"></a>00761 <span class="comment">/* +option or -option */</span>
777
<a name="l00762"></a>00762 fprintf (stderr, _(<span class="stringliteral">"%s: unrecognized option `%c%s'\n"</span>),
778
<a name="l00763"></a>00763 argv[0], argv[optind][0], nextchar);
779
<a name="l00764"></a>00764 }
780
<a name="l00765"></a>00765 nextchar = (<span class="keywordtype">char</span> *) <span class="stringliteral">""</span>;
781
<a name="l00766"></a>00766 optind++;
782
<a name="l00767"></a>00767 optopt = 0;
783
<a name="l00768"></a>00768 <span class="keywordflow">return</span> <span class="charliteral">'?'</span>;
784
<a name="l00769"></a>00769 }
785
<a name="l00770"></a>00770 }
786
<a name="l00771"></a>00771
787
<a name="l00772"></a>00772 <span class="comment">/* Look at and handle the next short option-character. */</span>
788
<a name="l00773"></a>00773
789
<a name="l00774"></a>00774 {
790
<a name="l00775"></a>00775 <span class="keywordtype">char</span> c = *nextchar++;
791
<a name="l00776"></a>00776 <span class="keywordtype">char</span> *temp = my_index (optstring, c);
792
<a name="l00777"></a>00777
793
<a name="l00778"></a>00778 <span class="comment">/* Increment `optind' when we start to process its last character. */</span>
794
<a name="l00779"></a>00779 <span class="keywordflow">if</span> (*nextchar == <span class="charliteral">'\0'</span>)
795
<a name="l00780"></a>00780 ++optind;
796
<a name="l00781"></a>00781
797
<a name="l00782"></a>00782 <span class="keywordflow">if</span> (temp == NULL || c == <span class="charliteral">':'</span>)
798
<a name="l00783"></a>00783 {
799
<a name="l00784"></a>00784 <span class="keywordflow">if</span> (print_errors)
800
<a name="l00785"></a>00785 {
801
<a name="l00786"></a>00786 <span class="keywordflow">if</span> (posixly_correct)
802
<a name="l00787"></a>00787 <span class="comment">/* 1003.2 specifies the format of this message. */</span>
803
<a name="l00788"></a>00788 fprintf (stderr, _(<span class="stringliteral">"%s: illegal option -- %c\n"</span>),
804
<a name="l00789"></a>00789 argv[0], c);
805
<a name="l00790"></a>00790 <span class="keywordflow">else</span>
806
<a name="l00791"></a>00791 fprintf (stderr, _(<span class="stringliteral">"%s: invalid option -- %c\n"</span>),
807
<a name="l00792"></a>00792 argv[0], c);
808
<a name="l00793"></a>00793 }
809
<a name="l00794"></a>00794 optopt = c;
810
<a name="l00795"></a>00795 <span class="keywordflow">return</span> <span class="charliteral">'?'</span>;
811
<a name="l00796"></a>00796 }
812
<a name="l00797"></a>00797 <span class="comment">/* Convenience. Treat POSIX -W foo same as long option --foo */</span>
813
<a name="l00798"></a>00798 <span class="keywordflow">if</span> (temp[0] == <span class="charliteral">'W'</span> && temp[1] == <span class="charliteral">';'</span>)
814
<a name="l00799"></a>00799 {
815
<a name="l00800"></a>00800 <span class="keywordtype">char</span> *nameend;
816
<a name="l00801"></a>00801 <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structoption.html">option</a> *p;
817
<a name="l00802"></a>00802 <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structoption.html">option</a> *pfound = NULL;
818
<a name="l00803"></a>00803 <span class="keywordtype">int</span> exact = 0;
819
<a name="l00804"></a>00804 <span class="keywordtype">int</span> ambig = 0;
820
<a name="l00805"></a>00805 <span class="keywordtype">int</span> indfound = 0;
821
<a name="l00806"></a>00806 <span class="keywordtype">int</span> option_index;
822
<a name="l00807"></a>00807
823
<a name="l00808"></a>00808 <span class="comment">/* This is an option that requires an argument. */</span>
824
<a name="l00809"></a>00809 <span class="keywordflow">if</span> (*nextchar != <span class="charliteral">'\0'</span>)
825
<a name="l00810"></a>00810 {
826
<a name="l00811"></a>00811 optarg = nextchar;
827
<a name="l00812"></a>00812 <span class="comment">/* If we end this ARGV-element by taking the rest as an arg,</span>
828
<a name="l00813"></a>00813 <span class="comment"> we must advance to the next element now. */</span>
829
<a name="l00814"></a>00814 optind++;
830
<a name="l00815"></a>00815 }
831
<a name="l00816"></a>00816 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (optind == argc)
832
<a name="l00817"></a>00817 {
833
<a name="l00818"></a>00818 <span class="keywordflow">if</span> (print_errors)
834
<a name="l00819"></a>00819 {
835
<a name="l00820"></a>00820 <span class="comment">/* 1003.2 specifies the format of this message. */</span>
836
<a name="l00821"></a>00821 fprintf (stderr, _(<span class="stringliteral">"%s: option requires an argument -- %c\n"</span>),
837
<a name="l00822"></a>00822 argv[0], c);
838
<a name="l00823"></a>00823 }
839
<a name="l00824"></a>00824 optopt = c;
840
<a name="l00825"></a>00825 <span class="keywordflow">if</span> (optstring[0] == <span class="charliteral">':'</span>)
841
<a name="l00826"></a>00826 c = <span class="charliteral">':'</span>;
842
<a name="l00827"></a>00827 <span class="keywordflow">else</span>
843
<a name="l00828"></a>00828 c = <span class="charliteral">'?'</span>;
844
<a name="l00829"></a>00829 <span class="keywordflow">return</span> c;
845
<a name="l00830"></a>00830 }
846
<a name="l00831"></a>00831 <span class="keywordflow">else</span>
847
<a name="l00832"></a>00832 <span class="comment">/* We already incremented `optind' once;</span>
848
<a name="l00833"></a>00833 <span class="comment"> increment it again when taking next ARGV-elt as argument. */</span>
849
<a name="l00834"></a>00834 optarg = argv[optind++];
850
<a name="l00835"></a>00835
851
<a name="l00836"></a>00836 <span class="comment">/* optarg is now the argument, see if it's in the</span>
852
<a name="l00837"></a>00837 <span class="comment"> table of longopts. */</span>
853
<a name="l00838"></a>00838
854
<a name="l00839"></a>00839 <span class="keywordflow">for</span> (nextchar = nameend = optarg; *nameend && *nameend != <span class="charliteral">'='</span>; nameend++)
855
<a name="l00840"></a>00840 <span class="comment">/* Do nothing. */</span> ;
856
<a name="l00841"></a>00841
857
<a name="l00842"></a>00842 <span class="comment">/* Test all long options for either exact match</span>
858
<a name="l00843"></a>00843 <span class="comment"> or abbreviated matches. */</span>
859
<a name="l00844"></a>00844 <span class="keywordflow">for</span> (p = longopts, option_index = 0; p-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>; p++, option_index++)
860
<a name="l00845"></a>00845 <span class="keywordflow">if</span> (!strncmp (p-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>, nextchar, nameend - nextchar))
861
<a name="l00846"></a>00846 {
862
<a name="l00847"></a>00847 <span class="keywordflow">if</span> ((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) (nameend - nextchar) == strlen (p-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>))
863
<a name="l00848"></a>00848 {
864
<a name="l00849"></a>00849 <span class="comment">/* Exact match found. */</span>
865
<a name="l00850"></a>00850 pfound = p;
866
<a name="l00851"></a>00851 indfound = option_index;
867
<a name="l00852"></a>00852 exact = 1;
868
<a name="l00853"></a>00853 <span class="keywordflow">break</span>;
869
<a name="l00854"></a>00854 }
870
<a name="l00855"></a>00855 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pfound == NULL)
871
<a name="l00856"></a>00856 {
872
<a name="l00857"></a>00857 <span class="comment">/* First nonexact match found. */</span>
873
<a name="l00858"></a>00858 pfound = p;
874
<a name="l00859"></a>00859 indfound = option_index;
875
<a name="l00860"></a>00860 }
876
<a name="l00861"></a>00861 <span class="keywordflow">else</span>
877
<a name="l00862"></a>00862 <span class="comment">/* Second or later nonexact match found. */</span>
878
<a name="l00863"></a>00863 ambig = 1;
879
<a name="l00864"></a>00864 }
880
<a name="l00865"></a>00865 <span class="keywordflow">if</span> (ambig && !exact)
881
<a name="l00866"></a>00866 {
882
<a name="l00867"></a>00867 <span class="keywordflow">if</span> (print_errors)
883
<a name="l00868"></a>00868 fprintf (stderr, _(<span class="stringliteral">"%s: option `-W %s' is ambiguous\n"</span>),
884
<a name="l00869"></a>00869 argv[0], argv[optind]);
885
<a name="l00870"></a>00870 nextchar += strlen (nextchar);
886
<a name="l00871"></a>00871 optind++;
887
<a name="l00872"></a>00872 <span class="keywordflow">return</span> <span class="charliteral">'?'</span>;
888
<a name="l00873"></a>00873 }
889
<a name="l00874"></a>00874 <span class="keywordflow">if</span> (pfound != NULL)
890
<a name="l00875"></a>00875 {
891
<a name="l00876"></a>00876 option_index = indfound;
892
<a name="l00877"></a>00877 <span class="keywordflow">if</span> (*nameend)
893
<a name="l00878"></a>00878 {
894
<a name="l00879"></a>00879 <span class="comment">/* Don't test has_arg with >, because some C compilers don't</span>
895
<a name="l00880"></a>00880 <span class="comment"> allow it to be used on enums. */</span>
896
<a name="l00881"></a>00881 <span class="keywordflow">if</span> (pfound-><a class="code" href="structoption.html#90d7ee9a51eea5c002682dbd0af149e4">has_arg</a>)
897
<a name="l00882"></a>00882 optarg = nameend + 1;
898
<a name="l00883"></a>00883 <span class="keywordflow">else</span>
899
<a name="l00884"></a>00884 {
900
<a name="l00885"></a>00885 <span class="keywordflow">if</span> (print_errors)
901
<a name="l00886"></a>00886 fprintf (stderr, _(<span class="stringliteral">"\</span>
902
<a name="l00887"></a>00887 <span class="stringliteral">%s: option `-W %s' doesn't allow an argument\n"</span>),
903
<a name="l00888"></a>00888 argv[0], pfound-><a class="code" href="structoption.html#92c850a23c7828c1dba453bf8d15e1f0">name</a>);
904
<a name="l00889"></a>00889
905
<a name="l00890"></a>00890 nextchar += strlen (nextchar);
906
<a name="l00891"></a>00891 <span class="keywordflow">return</span> <span class="charliteral">'?'</span>;
907
<a name="l00892"></a>00892 }
908
<a name="l00893"></a>00893 }
909
<a name="l00894"></a>00894 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pfound-><a class="code" href="structoption.html#90d7ee9a51eea5c002682dbd0af149e4">has_arg</a> == 1)
910
<a name="l00895"></a>00895 {
911
<a name="l00896"></a>00896 <span class="keywordflow">if</span> (optind < argc)
912
<a name="l00897"></a>00897 optarg = argv[optind++];
913
<a name="l00898"></a>00898 <span class="keywordflow">else</span>
914
<a name="l00899"></a>00899 {
915
<a name="l00900"></a>00900 <span class="keywordflow">if</span> (print_errors)
916
<a name="l00901"></a>00901 fprintf (stderr,
917
<a name="l00902"></a>00902 _(<span class="stringliteral">"%s: option `%s' requires an argument\n"</span>),
918
<a name="l00903"></a>00903 argv[0], argv[optind - 1]);
919
<a name="l00904"></a>00904 nextchar += strlen (nextchar);
920
<a name="l00905"></a>00905 <span class="keywordflow">return</span> optstring[0] == <span class="charliteral">':'</span> ? <span class="charliteral">':'</span> : <span class="charliteral">'?'</span>;
921
<a name="l00906"></a>00906 }
922
<a name="l00907"></a>00907 }
923
<a name="l00908"></a>00908 nextchar += strlen (nextchar);
924
<a name="l00909"></a>00909 <span class="keywordflow">if</span> (longind != NULL)
925
<a name="l00910"></a>00910 *longind = option_index;
926
<a name="l00911"></a>00911 <span class="keywordflow">if</span> (pfound-><a class="code" href="structoption.html#b366eea5fe7be25c1928328ba715e353">flag</a>)
927
<a name="l00912"></a>00912 {
928
<a name="l00913"></a>00913 *(pfound-><a class="code" href="structoption.html#b366eea5fe7be25c1928328ba715e353">flag</a>) = pfound-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a>;
929
<a name="l00914"></a>00914 <span class="keywordflow">return</span> 0;
930
<a name="l00915"></a>00915 }
931
<a name="l00916"></a>00916 <span class="keywordflow">return</span> pfound-><a class="code" href="structoption.html#13bd155ec3b405d29c41ab8d0793be11">val</a>;
932
<a name="l00917"></a>00917 }
933
<a name="l00918"></a>00918 nextchar = NULL;
934
<a name="l00919"></a>00919 <span class="keywordflow">return</span> <span class="charliteral">'W'</span>; <span class="comment">/* Let the application handle it. */</span>
935
<a name="l00920"></a>00920 }
936
<a name="l00921"></a>00921 <span class="keywordflow">if</span> (temp[1] == <span class="charliteral">':'</span>)
937
<a name="l00922"></a>00922 {
938
<a name="l00923"></a>00923 <span class="keywordflow">if</span> (temp[2] == <span class="charliteral">':'</span>)
939
<a name="l00924"></a>00924 {
940
<a name="l00925"></a>00925 <span class="comment">/* This is an option that accepts an argument optionally. */</span>
941
<a name="l00926"></a>00926 <span class="keywordflow">if</span> (*nextchar != <span class="charliteral">'\0'</span>)
942
<a name="l00927"></a>00927 {
943
<a name="l00928"></a>00928 optarg = nextchar;
944
<a name="l00929"></a>00929 optind++;
945
<a name="l00930"></a>00930 }
946
<a name="l00931"></a>00931 <span class="keywordflow">else</span>
947
<a name="l00932"></a>00932 optarg = NULL;
948
<a name="l00933"></a>00933 nextchar = NULL;
949
<a name="l00934"></a>00934 }
950
<a name="l00935"></a>00935 <span class="keywordflow">else</span>
951
<a name="l00936"></a>00936 {
952
<a name="l00937"></a>00937 <span class="comment">/* This is an option that requires an argument. */</span>
953
<a name="l00938"></a>00938 <span class="keywordflow">if</span> (*nextchar != <span class="charliteral">'\0'</span>)
954
<a name="l00939"></a>00939 {
955
<a name="l00940"></a>00940 optarg = nextchar;
956
<a name="l00941"></a>00941 <span class="comment">/* If we end this ARGV-element by taking the rest as an arg,</span>
957
<a name="l00942"></a>00942 <span class="comment"> we must advance to the next element now. */</span>
958
<a name="l00943"></a>00943 optind++;
959
<a name="l00944"></a>00944 }
960
<a name="l00945"></a>00945 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (optind == argc)
961
<a name="l00946"></a>00946 {
962
<a name="l00947"></a>00947 <span class="keywordflow">if</span> (print_errors)
963
<a name="l00948"></a>00948 {
964
<a name="l00949"></a>00949 <span class="comment">/* 1003.2 specifies the format of this message. */</span>
965
<a name="l00950"></a>00950 fprintf (stderr,
966
<a name="l00951"></a>00951 _(<span class="stringliteral">"%s: option requires an argument -- %c\n"</span>),
967
<a name="l00952"></a>00952 argv[0], c);
968
<a name="l00953"></a>00953 }
969
<a name="l00954"></a>00954 optopt = c;
970
<a name="l00955"></a>00955 <span class="keywordflow">if</span> (optstring[0] == <span class="charliteral">':'</span>)
971
<a name="l00956"></a>00956 c = <span class="charliteral">':'</span>;
972
<a name="l00957"></a>00957 <span class="keywordflow">else</span>
973
<a name="l00958"></a>00958 c = <span class="charliteral">'?'</span>;
974
<a name="l00959"></a>00959 }
975
<a name="l00960"></a>00960 <span class="keywordflow">else</span>
976
<a name="l00961"></a>00961 <span class="comment">/* We already incremented `optind' once;</span>
977
<a name="l00962"></a>00962 <span class="comment"> increment it again when taking next ARGV-elt as argument. */</span>
978
<a name="l00963"></a>00963 optarg = argv[optind++];
979
<a name="l00964"></a>00964 nextchar = NULL;
980
<a name="l00965"></a>00965 }
981
<a name="l00966"></a>00966 }
982
<a name="l00967"></a>00967 <span class="keywordflow">return</span> c;
983
<a name="l00968"></a>00968 }
984
<a name="l00969"></a>00969 }
985
<a name="l00970"></a>00970
986
<a name="l00971"></a>00971 <span class="keywordtype">int</span>
987
<a name="l00972"></a>00972 getopt (argc, argv, optstring)
988
<a name="l00973"></a>00973 int argc;
989
<a name="l00974"></a>00974 <span class="keywordtype">char</span> *const *argv;
990
<a name="l00975"></a>00975 const <span class="keywordtype">char</span> *optstring;
991
<a name="l00976"></a>00976 {
992
<a name="l00977"></a>00977 <span class="keywordflow">return</span> _getopt_internal (argc, argv, optstring,
993
<a name="l00978"></a>00978 (<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structoption.html">option</a> *) 0,
994
<a name="l00979"></a>00979 (<span class="keywordtype">int</span> *) 0,
995
<a name="l00980"></a>00980 0);
996
<a name="l00981"></a>00981 }
997
<a name="l00982"></a>00982
998
<a name="l00983"></a>00983 <span class="preprocessor">#endif </span><span class="comment">/* Not ELIDE_CODE. */</span>
999
<a name="l00984"></a>00984
1000
<a name="l00985"></a>00985 <span class="preprocessor">#ifdef TEST</span>
1001
<a name="l00986"></a>00986 <span class="preprocessor"></span>
1002
<a name="l00987"></a>00987 <span class="comment">/* Compile with -DTEST to make an executable for use in testing</span>
1003
<a name="l00988"></a>00988 <span class="comment"> the above definition of `getopt'. */</span>
1004
<a name="l00989"></a>00989
1005
<a name="l00990"></a>00990 <span class="keywordtype">int</span>
1006
<a name="l00991"></a>00991 <a class="code" href="ofx2qif_8c.html#0ddf1224851353fc92bfbff6f499fa97">main</a> (argc, argv)
1007
<a name="l00992"></a>00992 int argc;
1008
<a name="l00993"></a>00993 <span class="keywordtype">char</span> **argv;
1009
<a name="l00994"></a>00994 {
1010
<a name="l00995"></a>00995 <span class="keywordtype">int</span> c;
1011
<a name="l00996"></a>00996 <span class="keywordtype">int</span> digit_optind = 0;
1012
<a name="l00997"></a>00997
1013
<a name="l00998"></a>00998 <span class="keywordflow">while</span> (1)
1014
<a name="l00999"></a>00999 {
1015
<a name="l01000"></a>01000 <span class="keywordtype">int</span> this_option_optind = optind ? optind : 1;
1016
<a name="l01001"></a>01001
1017
<a name="l01002"></a>01002 c = getopt (argc, argv, <span class="stringliteral">"abc:d:0123456789"</span>);
1018
<a name="l01003"></a>01003 <span class="keywordflow">if</span> (c == -1)
1019
<a name="l01004"></a>01004 <span class="keywordflow">break</span>;
1020
<a name="l01005"></a>01005
1021
<a name="l01006"></a>01006 <span class="keywordflow">switch</span> (c)
1022
<a name="l01007"></a>01007 {
1023
<a name="l01008"></a>01008 <span class="keywordflow">case</span> <span class="charliteral">'0'</span>:
1024
<a name="l01009"></a>01009 <span class="keywordflow">case</span> <span class="charliteral">'1'</span>:
1025
<a name="l01010"></a>01010 <span class="keywordflow">case</span> <span class="charliteral">'2'</span>:
1026
<a name="l01011"></a>01011 <span class="keywordflow">case</span> <span class="charliteral">'3'</span>:
1027
<a name="l01012"></a>01012 <span class="keywordflow">case</span> <span class="charliteral">'4'</span>:
1028
<a name="l01013"></a>01013 <span class="keywordflow">case</span> <span class="charliteral">'5'</span>:
1029
<a name="l01014"></a>01014 <span class="keywordflow">case</span> <span class="charliteral">'6'</span>:
1030
<a name="l01015"></a>01015 <span class="keywordflow">case</span> <span class="charliteral">'7'</span>:
1031
<a name="l01016"></a>01016 <span class="keywordflow">case</span> <span class="charliteral">'8'</span>:
1032
<a name="l01017"></a>01017 <span class="keywordflow">case</span> <span class="charliteral">'9'</span>:
1033
<a name="l01018"></a>01018 <span class="keywordflow">if</span> (digit_optind != 0 && digit_optind != this_option_optind)
1034
<a name="l01019"></a>01019 printf (<span class="stringliteral">"digits occur in two different argv-elements.\n"</span>);
1035
<a name="l01020"></a>01020 digit_optind = this_option_optind;
1036
<a name="l01021"></a>01021 printf (<span class="stringliteral">"option %c\n"</span>, c);
1037
<a name="l01022"></a>01022 <span class="keywordflow">break</span>;
1038
<a name="l01023"></a>01023
1039
<a name="l01024"></a>01024 <span class="keywordflow">case</span> <span class="charliteral">'a'</span>:
1040
<a name="l01025"></a>01025 printf (<span class="stringliteral">"option a\n"</span>);
1041
<a name="l01026"></a>01026 <span class="keywordflow">break</span>;
1042
<a name="l01027"></a>01027
1043
<a name="l01028"></a>01028 <span class="keywordflow">case</span> <span class="charliteral">'b'</span>:
1044
<a name="l01029"></a>01029 printf (<span class="stringliteral">"option b\n"</span>);
1045
<a name="l01030"></a>01030 <span class="keywordflow">break</span>;
1046
<a name="l01031"></a>01031
1047
<a name="l01032"></a>01032 <span class="keywordflow">case</span> <span class="charliteral">'c'</span>:
1048
<a name="l01033"></a>01033 printf (<span class="stringliteral">"option c with value `%s'\n"</span>, optarg);
1049
<a name="l01034"></a>01034 <span class="keywordflow">break</span>;
1050
<a name="l01035"></a>01035
1051
<a name="l01036"></a>01036 <span class="keywordflow">case</span> <span class="charliteral">'?'</span>:
1052
<a name="l01037"></a>01037 <span class="keywordflow">break</span>;
1053
<a name="l01038"></a>01038
1054
<a name="l01039"></a>01039 <span class="keywordflow">default</span>:
1055
<a name="l01040"></a>01040 printf (<span class="stringliteral">"?? getopt returned character code 0%o ??\n"</span>, c);
1056
<a name="l01041"></a>01041 }
1057
<a name="l01042"></a>01042 }
1058
<a name="l01043"></a>01043
1059
<a name="l01044"></a>01044 <span class="keywordflow">if</span> (optind < argc)
1060
<a name="l01045"></a>01045 {
1061
<a name="l01046"></a>01046 printf (<span class="stringliteral">"non-option ARGV-elements: "</span>);
1062
<a name="l01047"></a>01047 <span class="keywordflow">while</span> (optind < argc)
1063
<a name="l01048"></a>01048 printf (<span class="stringliteral">"%s "</span>, argv[optind++]);
1064
<a name="l01049"></a>01049 printf (<span class="stringliteral">"\n"</span>);
1065
<a name="l01050"></a>01050 }
1066
<a name="l01051"></a>01051
1067
<a name="l01052"></a>01052 exit (0);
1068
<a name="l01053"></a>01053 }
1069
<a name="l01054"></a>01054
1070
<a name="l01055"></a>01055 <span class="preprocessor">#endif </span><span class="comment">/* TEST */</span>
1071
</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Mon Nov 19 20:27:58 2007 for LibOFX by
1072
<a href="http://www.doxygen.org/index.html">
1073
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>