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<hr><h1>getopt.cc</h1><a href="a00103.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">// -*- Mode: C++; -*-</font>
00002 <font class="comment">// Package : omniEvents</font>
00003 <font class="comment">// getopt.cc Created : 1/4/98</font>
00004 <font class="comment">// Author : Paul Nader (pwn)</font>
00005 <font class="comment">//</font>
00006 <font class="comment">// Copyright (C) 1998 Paul Nader.</font>
00007 <font class="comment">//</font>
00008 <font class="comment">// This file is part of the omniEvents application.</font>
00009 <font class="comment">//</font>
00010 <font class="comment">// omniEvents is free software; you can redistribute it and/or</font>
00011 <font class="comment">// modify it under the terms of the GNU Lesser General Public</font>
00012 <font class="comment">// License as published by the Free Software Foundation; either</font>
00013 <font class="comment">// version 2.1 of the License, or (at your option) any later version.</font>
00014 <font class="comment">//</font>
00015 <font class="comment">// omniEvents is distributed in the hope that it will be useful,</font>
00016 <font class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment">// Lesser General Public License for more details.</font>
00019 <font class="comment">//</font>
00020 <font class="comment">// You should have received a copy of the GNU Lesser General Public</font>
00021 <font class="comment">// License along with this library; if not, write to the Free Software</font>
00022 <font class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</font>
00023 <font class="comment">//</font>
00024 <font class="comment">// Description:</font>
00025 <font class="comment">//</font>
00026 <font class="comment">// getopt implementation for WIN32 platforms.</font>
00027 <font class="comment">//</font>
00028
00029 <font class="comment">/*</font>
00030 <font class="comment"> $Log: getopt.cc,v $</font>
00031 <font class="comment"> Revision 1.4 2004/08/04 08:13:44 alextingle</font>
00032 <font class="comment"> Unix daemon & Windows service now both working. Accessed through interface class Daemon (in daemon.h).</font>
00033 <font class="comment"></font>
00034 <font class="comment"> Revision 1.3 2004/07/15 14:34:31 alextingle</font>
00035 <font class="comment"> Global variables are now declared extern "C".</font>
00036 <font class="comment"></font>
00037 <font class="comment"> Revision 1.2 2004/02/22 00:37:35 alextingle</font>
00038 <font class="comment"> Now does nothing if it isn't needed. Fixes link errors</font>
00039 <font class="comment"></font>
00040 <font class="comment"> Revision 1.1 2003/12/21 16:19:49 alextingle</font>
00041 <font class="comment"> Moved into 'src' directory as part of the change to POA implementation.</font>
00042 <font class="comment"></font>
00043 <font class="comment"> Revision 1.2 2003/11/03 22:46:54 alextingle</font>
00044 <font class="comment"> This implementation of getopt() seems to be needed on AIX as well as</font>
00045 <font class="comment"> windows. It therefore needs to be able to compile on Unix. Changed</font>
00046 <font class="comment"> _tzset() to tzset() in order to achieve this.</font>
00047 <font class="comment"></font>
00048 <font class="comment"> Revision 1.1.1.1 2002/09/25 19:00:35 shamus13</font>
00049 <font class="comment"> Import of OmniEvents source tree from release 2.1.1</font>
00050 <font class="comment"></font>
00051 <font class="comment"> Revision 1.3 1999/11/01 16:59:38 naderp</font>
00052 <font class="comment"> *** empty log message ***</font>
00053 <font class="comment"></font>
00054 <font class="comment">Revision 1.2 99/04/23 12:11:18 12:11:18 naderp (Paul Nader)</font>
00055 <font class="comment">*** empty log message ***</font>
00056 <font class="comment"></font>
00057 <font class="comment">Revision 1.1 99/04/23 09:33:35 09:33:35 naderp (Paul Nader)</font>
00058 <font class="comment">Initial revision</font>
00059 <font class="comment">*/</font>
00060
00061 <font class="preprocessor">#ifdef HAVE_CONFIG_H</font>
00062 <font class="preprocessor"></font><font class="preprocessor"># include "<a class="code" href="a00082.html">config.h</a>"</font>
00063 <font class="preprocessor">#endif</font>
00064 <font class="preprocessor"></font>
00065 <font class="preprocessor">#ifdef HAVE_GETOPT</font>
00066 <font class="preprocessor"></font><font class="keywordtype">void</font> omniEventsDummyGetopt(){}
00067 <font class="preprocessor">#else</font>
00068 <font class="preprocessor"></font>
00069 <font class="preprocessor">#include "<a class="code" href="a00104.html">getopt.h</a>"</font>
00070 <font class="preprocessor">#include <errno.h></font>
00071 <font class="preprocessor">#include <stdio.h></font>
00072 <font class="preprocessor">#include <string.h></font>
00073
<a name="l00074"></a><a class="code" href="a00103.html#a0">00074</a> <font class="keyword">static</font> <font class="keywordtype">char</font>* <a class="code" href="a00103.html#a0">letP</a> =NULL; <font class="comment">// Speichert den Ort des Zeichens der</font>
00075 <font class="comment">// naechsten Option</font>
<a name="l00076"></a><a class="code" href="a00103.html#a1">00076</a> <font class="keyword">static</font> <font class="keywordtype">char</font> <a class="code" href="a00103.html#a1">SW</a> =<font class="charliteral">'-'</font>; <font class="comment">// DOS-Schalter, entweder '-' oder '/'</font>
00077
00078 <font class="comment">// -------------------------------------------------------------- exports ----</font>
00079
00080 <font class="keyword">extern</font> <font class="stringliteral">"C"</font>
00081 {
<a name="l00082"></a><a class="code" href="a00103.html#a2">00082</a> <font class="keywordtype">int</font> <a class="code" href="a00103.html#a2">optind</a> = 1; <font class="comment">// Index: welches Argument ist das naechste</font>
<a name="l00083"></a><a class="code" href="a00103.html#a3">00083</a> <font class="keywordtype">char</font>* <a class="code" href="a00103.html#a3">optarg</a>; <font class="comment">// Zeiger auf das Argument der akt. Option</font>
<a name="l00084"></a><a class="code" href="a00103.html#a4">00084</a> <font class="keywordtype">int</font> <a class="code" href="a00103.html#a4">opterr</a> = 1; <font class="comment">// erlaubt Fehlermeldungen</font>
00085 }
00086
00087 <font class="comment">// ===========================================================================</font>
<a name="l00088"></a><a class="code" href="a00103.html#a5">00088</a> <font class="keywordtype">int</font> <a class="code" href="a00103.html#a5">getopt</a>(<font class="keywordtype">int</font> argc, <font class="keywordtype">char</font> *argv[], <font class="keyword">const</font> <font class="keywordtype">char</font> *optionS)
00089 {
00090 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> ch;
00091 <font class="keywordtype">char</font> *optP;
00092
00093 <font class="keywordflow">if</font>(argc><a class="code" href="a00103.html#a2">optind</a>)
00094 {
00095 <font class="keywordflow">if</font>(<a class="code" href="a00103.html#a0">letP</a>==NULL)
00096 {
00097 <font class="comment">// Initialize letP</font>
00098 <font class="keywordflow">if</font>( (<a class="code" href="a00103.html#a0">letP</a>=argv[<a class="code" href="a00103.html#a2">optind</a>])==NULL || *(<a class="code" href="a00103.html#a0">letP</a>++)!=<a class="code" href="a00103.html#a1">SW</a> )
00099 <font class="keywordflow">goto</font> gopEOF;
00100 <font class="keywordflow">if</font>(*<a class="code" href="a00103.html#a0">letP</a> == <a class="code" href="a00103.html#a1">SW</a>)
00101 {
00102 <font class="comment">// "--" is end of options.</font>
00103 <a class="code" href="a00103.html#a2">optind</a>++;
00104 <font class="keywordflow">goto</font> gopEOF;
00105 }
00106 }
00107
00108 <font class="keywordflow">if</font>((ch=*(<a class="code" href="a00103.html#a0">letP</a>++))== <font class="charliteral">'\0'</font>)
00109 {
00110 <font class="comment">// "-" is end of options.</font>
00111 <a class="code" href="a00103.html#a2">optind</a>++;
00112 <font class="keywordflow">goto</font> gopEOF;
00113 }
00114 <font class="keywordflow">if</font>(<font class="charliteral">':'</font>==ch || (optP=(<font class="keywordtype">char</font>*)strchr(optionS,ch)) == NULL)
00115 {
00116 <font class="keywordflow">goto</font> gopError;
00117 }
00118 <font class="comment">// 'ch' is a valid option</font>
00119 <font class="comment">// 'optP' points to the optoin char in optionS</font>
00120 <font class="keywordflow">if</font>(<font class="charliteral">':'</font>==*(++optP))
00121 {
00122 <font class="comment">// Option needs a parameter.</font>
00123 <a class="code" href="a00103.html#a2">optind</a>++;
00124 <font class="keywordflow">if</font>(<font class="charliteral">'\0'</font>==*<a class="code" href="a00103.html#a0">letP</a>)
00125 {
00126 <font class="comment">// parameter is in next argument</font>
00127 <font class="keywordflow">if</font>(argc <= <a class="code" href="a00103.html#a2">optind</a>)
00128 <font class="keywordflow">goto</font> gopError;
00129 <a class="code" href="a00103.html#a0">letP</a> = argv[<a class="code" href="a00103.html#a2">optind</a>++];
00130 }
00131 <a class="code" href="a00103.html#a3">optarg</a> = <a class="code" href="a00103.html#a0">letP</a>;
00132 <a class="code" href="a00103.html#a0">letP</a> = NULL;
00133 }
00134 <font class="keywordflow">else</font>
00135 {
00136 <font class="comment">// Option needs no parameter.</font>
00137 <font class="keywordflow">if</font>(<font class="charliteral">'\0'</font>==*<a class="code" href="a00103.html#a0">letP</a>)
00138 {
00139 <font class="comment">// Move on to next argument.</font>
00140 <a class="code" href="a00103.html#a2">optind</a>++;
00141 <a class="code" href="a00103.html#a0">letP</a> = NULL;
00142 }
00143 <a class="code" href="a00103.html#a3">optarg</a> = NULL;
00144 }
00145 <font class="keywordflow">return</font> ch;
00146 }
00147 gopEOF:
00148 <a class="code" href="a00103.html#a3">optarg</a>=<a class="code" href="a00103.html#a0">letP</a>=NULL;
00149 <font class="keywordflow">return</font> EOF;
00150
00151 gopError:
00152 <a class="code" href="a00103.html#a3">optarg</a> = NULL;
00153 errno = EINVAL;
00154 <font class="keywordflow">if</font>(opterr)
00155 perror (<font class="stringliteral">"error in command line"</font>);
00156 <font class="keywordflow">return</font> (<font class="charliteral">'?'</font>);
00157 }
00158 <font class="comment">// ===========================================================================</font>
00159 <font class="comment">// Ende von getopt ()</font>
00160 <font class="comment">// ===========================================================================</font>
00161
00162 <font class="preprocessor">#endif // HAVE_GETOPT</font>
00163 <font class="preprocessor"></font>
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