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authorneodarz <neodarz@neodarz.net>2018-08-11 20:21:34 +0200
committerneodarz <neodarz@neodarz.net>2018-08-11 20:21:34 +0200
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tree2568e71a7ccc44ec23b8bb3f0ff97fb6bf2ed709 /docs/doxygen/nel/command_8cpp-source.html
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+<hr><h1>command.cpp</h1><a href="command_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
+00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font>
+00008 <font class="comment"> *</font>
+00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
+00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
+00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
+00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
+00013 <font class="comment"> * any later version.</font>
+00014 <font class="comment"></font>
+00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
+00016 <font class="comment"> * 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"> * 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 General Public License</font>
+00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
+00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
+00023 <font class="comment"> * MA 02111-1307, USA.</font>
+00024 <font class="comment"> */</font>
+00025
+00026 <font class="preprocessor">#include "<a class="code" href="stdmisc_8h.html">stdmisc.h</a>"</font>
+00027
+00028 <font class="preprocessor">#include "<a class="code" href="command_8h.html">nel/misc/command.h</a>"</font>
+00029
+00030 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
+00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
+00032
+00033 <font class="keyword">namespace </font>NLMISC {
+00034
+<a name="l00035"></a><a class="code" href="classNLMISC_1_1ICommand.html#p0">00035</a> ICommand::TCommand *ICommand::Commands;
+<a name="l00036"></a><a class="code" href="classNLMISC_1_1ICommand.html#p1">00036</a> <font class="keywordtype">bool</font> ICommand::CommandsInit;
+00037
+<a name="l00038"></a><a class="code" href="classNLMISC_1_1ICommand.html#a0">00038</a> ICommand::ICommand(<font class="keyword">const</font> <font class="keywordtype">char</font> *commandName, <font class="keyword">const</font> <font class="keywordtype">char</font> *commandHelp, <font class="keyword">const</font> <font class="keywordtype">char</font> *commandArgs)
+00039 {
+00040 <font class="comment">// self registration</font>
+00041
+00042 <font class="keywordflow">if</font> (!<a class="code" href="classNLMISC_1_1ICommand.html#p1">CommandsInit</a>)
+00043 {
+00044 <font class="comment">//printf("create map\n");</font>
+00045 <a class="code" href="classNLMISC_1_1ICommand.html#p0">Commands</a> = <font class="keyword">new</font> <a class="code" href="classNLMISC_1_1ICommand.html#s0">TCommand</a>;
+00046 <a class="code" href="classNLMISC_1_1ICommand.html#p1">CommandsInit</a> = <font class="keyword">true</font>;
+00047 }
+00048
+00049 TCommand::iterator comm = (*Commands).find(commandName);
+00050
+00051 <font class="keywordflow">if</font> (comm != (*Commands).end ())
+00052 {
+00053 <font class="comment">// 2 commands have the same name</font>
+00054 <a class="code" href="debug_8h.html#a14">nlstopex</a> ((<font class="stringliteral">"There are 2 commands that have the same name in the project (command name '%s'), skip the second definition"</font>, commandName));
+00055 }
+00056 <font class="keywordflow">else</font>
+00057 {
+00058 <font class="comment">// insert the new command in the map</font>
+00059 <font class="comment">//printf("add command\n");</font>
+00060 <a class="code" href="classNLMISC_1_1ICommand.html#m0">HelpString</a> = commandHelp;
+00061 <a class="code" href="classNLMISC_1_1ICommand.html#m1">CommandArgs</a> = commandArgs;
+00062 <a class="code" href="classNLMISC_1_1ICommand.html#n0">_CommandName</a> = commandName;
+00063 <a class="code" href="classNLMISC_1_1ICommand.html#m2">Type</a> = <a class="code" href="classNLMISC_1_1ICommand.html#s4s2">Command</a>;
+00064 (*Commands)[commandName] = <font class="keyword">this</font>;
+00065 }
+00066 }
+00067
+00068 ICommand::~ICommand()
+00069 {
+00070 <font class="comment">// self deregistration</font>
+00071
+00072 <font class="keywordflow">if</font> (!<a class="code" href="classNLMISC_1_1ICommand.html#p1">CommandsInit</a>)
+00073 {
+00074 <font class="comment">// should never happen</font>
+00075 <a class="code" href="debug_8h.html#a12">nlstop</a>;
+00076 <font class="keywordflow">return</font>;
+00077 }
+00078
+00079 <font class="comment">// find the command</font>
+00080
+00081 <font class="keywordflow">for</font> (TCommand::iterator comm = (*Commands).begin(); comm != (*Commands).end(); comm++)
+00082 {
+00083 <font class="keywordflow">if</font> ((*comm).second == <font class="keyword">this</font>)
+00084 {
+00085 <font class="comment">//printf("remove command\n");</font>
+00086 (*Commands).erase (comm);
+00087
+00088 <font class="keywordflow">if</font> ((*Commands).size() == 0)
+00089 {
+00090 <font class="comment">// if the commands map is empty, destroy it</font>
+00091 <font class="comment">//printf("delete map\n");</font>
+00092 <font class="keyword">delete</font> <a class="code" href="classNLMISC_1_1ICommand.html#p0">Commands</a>;
+00093 <a class="code" href="classNLMISC_1_1ICommand.html#p1">CommandsInit</a> = <font class="keyword">false</font>;
+00094 }
+00095
+00096 <font class="keywordflow">return</font>;
+00097 }
+00098 }
+00099 <font class="comment">// commands is not found</font>
+00100 <a class="code" href="debug_8h.html#a12">nlstop</a>;
+00101 }
+00102
+<a name="l00103"></a><a class="code" href="classNLMISC_1_1ICommand.html#d0">00103</a> <font class="keywordtype">void</font> ICommand::execute (<font class="keyword">const</font> std::string &amp;commandWithArgs, CLog &amp;log, <font class="keywordtype">bool</font> quiet)
+00104 {
+00105 <font class="keywordflow">if</font> (!quiet) log.displayNL (<font class="stringliteral">"Executing command : '%s'"</font>, commandWithArgs.c_str());
+00106
+00107 <font class="comment">// convert the buffer into string vector</font>
+00108
+00109 vector&lt;string&gt; args;
+00110 string command;
+00111
+00112 <font class="keywordtype">bool</font> firstArg = <font class="keyword">true</font>;
+00113 uint i = 0;
+00114 <font class="keywordflow">while</font> (true)
+00115 {
+00116 <font class="comment">// skip whitespace</font>
+00117 <font class="keywordflow">while</font> (true)
+00118 {
+00119 <font class="keywordflow">if</font> (i == commandWithArgs.size())
+00120 {
+00121 <font class="keywordflow">goto</font> end;
+00122 }
+00123 <font class="keywordflow">if</font> (commandWithArgs[i] != <font class="charliteral">' '</font> &amp;&amp; commandWithArgs[i] != <font class="charliteral">'\t'</font> &amp;&amp; commandWithArgs[i] != <font class="charliteral">'\n'</font> &amp;&amp; commandWithArgs[i] != <font class="charliteral">'\r'</font>)
+00124 {
+00125 <font class="keywordflow">break</font>;
+00126 }
+00127 i++;
+00128 }
+00129
+00130 <font class="comment">// get param</font>
+00131 string arg;
+00132 <font class="keywordflow">if</font> (commandWithArgs[i] == <font class="charliteral">'\"'</font>)
+00133 {
+00134 <font class="comment">// starting with a quote "</font>
+00135 i++;
+00136 <font class="keywordflow">while</font> (true)
+00137 {
+00138 <font class="keywordflow">if</font> (i == commandWithArgs.size())
+00139 {
+00140 <font class="keywordflow">if</font> (!quiet) log.displayNL (<font class="stringliteral">"Missing end quote character \""</font>);
+00141 <font class="keywordflow">return</font>;
+00142 }
+00143 <font class="keywordflow">if</font> (commandWithArgs[i] == <font class="charliteral">'"'</font>)
+00144 {
+00145 i++;
+00146 <font class="keywordflow">break</font>;
+00147 }
+00148 <font class="keywordflow">if</font> (commandWithArgs[i] == <font class="charliteral">'\\'</font>)
+00149 {
+00150 <font class="comment">// manage escape char backslash</font>
+00151 i++;
+00152 <font class="keywordflow">if</font> (i == commandWithArgs.size())
+00153 {
+00154 <font class="keywordflow">if</font> (!quiet) log.displayNL (<font class="stringliteral">"Missing character after the backslash \\ character"</font>);
+00155 <font class="keywordflow">return</font>;
+00156 }
+00157 <font class="keywordflow">switch</font> (commandWithArgs[i])
+00158 {
+00159 <font class="keywordflow">case</font> <font class="charliteral">'\\'</font>: arg += <font class="charliteral">'\\'</font>; <font class="keywordflow">break</font>; <font class="comment">// double backslash</font>
+00160 <font class="keywordflow">case</font> <font class="charliteral">'n'</font>: arg += <font class="charliteral">'\n'</font>; <font class="keywordflow">break</font>; <font class="comment">// new line</font>
+00161 <font class="keywordflow">case</font> <font class="charliteral">'"'</font>: arg += <font class="charliteral">'"'</font>; <font class="keywordflow">break</font>; <font class="comment">// "</font>
+00162 <font class="keywordflow">default</font>:
+00163 <font class="keywordflow">if</font> (!quiet) log.displayNL (<font class="stringliteral">"Unknown escape code '\\%c'"</font>, commandWithArgs[i]);
+00164 <font class="keywordflow">return</font>;
+00165 }
+00166 i++;
+00167 }
+00168 <font class="keywordflow">else</font>
+00169 {
+00170 arg += commandWithArgs[i++];
+00171 }
+00172 }
+00173 }
+00174 <font class="keywordflow">else</font>
+00175 {
+00176 <font class="comment">// normal word</font>
+00177 <font class="keywordflow">while</font> (true)
+00178 {
+00179 <font class="keywordflow">if</font> (commandWithArgs[i] == <font class="charliteral">'\\'</font>)
+00180 {
+00181 <font class="comment">// manage escape char backslash</font>
+00182 i++;
+00183 <font class="keywordflow">if</font> (i == commandWithArgs.size())
+00184 {
+00185 <font class="keywordflow">if</font> (!quiet) log.displayNL (<font class="stringliteral">"Missing character after the backslash \\ character"</font>);
+00186 <font class="keywordflow">return</font>;
+00187 }
+00188 <font class="keywordflow">switch</font> (commandWithArgs[i])
+00189 {
+00190 <font class="keywordflow">case</font> <font class="charliteral">'\\'</font>: arg += <font class="charliteral">'\\'</font>; <font class="keywordflow">break</font>; <font class="comment">// double backslash</font>
+00191 <font class="keywordflow">case</font> <font class="charliteral">'n'</font>: arg += <font class="charliteral">'\n'</font>; <font class="keywordflow">break</font>; <font class="comment">// new line</font>
+00192 <font class="keywordflow">case</font> <font class="charliteral">'"'</font>: arg += <font class="charliteral">'"'</font>; <font class="keywordflow">break</font>; <font class="comment">// "</font>
+00193 <font class="keywordflow">default</font>:
+00194 <font class="keywordflow">if</font> (!quiet) log.displayNL (<font class="stringliteral">"Unknown escape code '\\%c'"</font>, commandWithArgs[i]);
+00195 <font class="keywordflow">return</font>;
+00196 }
+00197 i++;
+00198 }
+00199 <font class="keywordflow">else</font>
+00200 {
+00201 arg += commandWithArgs[i++];
+00202 }
+00203 <font class="keywordflow">if</font> (i == commandWithArgs.size() || commandWithArgs[i] == <font class="charliteral">' '</font> || commandWithArgs[i] == <font class="charliteral">'\t'</font> || commandWithArgs[i] == <font class="charliteral">'\n'</font> || commandWithArgs[i] == <font class="charliteral">'\r'</font>)
+00204 {
+00205 <font class="keywordflow">break</font>;
+00206 }
+00207 }
+00208 }
+00209 <font class="keywordflow">if</font> (firstArg)
+00210 {
+00211 command = arg;
+00212 firstArg = <font class="keyword">false</font>;
+00213 }
+00214 <font class="keywordflow">else</font>
+00215 {
+00216 args.push_back (arg);
+00217 }
+00218 }
+00219 end:
+00220
+00221 <font class="comment">/* displays args fordebug purpose</font>
+00222 <font class="comment"> nlinfo ("c '%s'", command.c_str());</font>
+00223 <font class="comment"> for (uint t = 0; t &lt; args.size (); t++)</font>
+00224 <font class="comment"> {</font>
+00225 <font class="comment"> nlinfo ("p%d '%s'", t, args[t].c_str());</font>
+00226 <font class="comment"> }</font>
+00227 <font class="comment">*/</font>
+00228
+00229 <font class="comment">// find the command </font>
+00230 TCommand::iterator comm = (*Commands).find(command.c_str());
+00231 <font class="keywordflow">if</font> (comm == (*Commands).end ())
+00232 {
+00233 <font class="comment">// the command doesn't exist</font>
+00234 <font class="keywordflow">if</font> (!quiet) log.displayNL(<font class="stringliteral">"Command '%s' not found, try 'help'"</font>, command.c_str());
+00235 }
+00236 <font class="keywordflow">else</font>
+00237 {
+00238 <font class="comment">//printf("execute command\n");</font>
+00239 <font class="keywordflow">if</font> (!(*comm).second-&gt;execute (args, log))
+00240 {
+00241 <font class="keywordflow">if</font> (!quiet) log.displayNL(<font class="stringliteral">"Bad command usage, try 'help %s'"</font>, command.c_str());
+00242 }
+00243 }
+00244 }
+00245
+00246
+00247 <font class="comment">/*</font>
+00248 <font class="comment"> * Command name completion.</font>
+00249 <font class="comment"> * Case-sensitive. Displays the list after two calls with the same non-unique completion.</font>
+00250 <font class="comment"> * Completes commands used with prefixes (such as "help " for example) as well.</font>
+00251 <font class="comment"> */</font>
+<a name="l00252"></a><a class="code" href="classNLMISC_1_1ICommand.html#d1">00252</a> <font class="keywordtype">void</font> ICommand::expand (std::string &amp;commandName, <a class="code" href="classNLMISC_1_1CLog.html">NLMISC::CLog</a> &amp;log)
+00253 {
+00254 <font class="comment">// Take out the string before the last separator and remember it as a prefix</font>
+00255 uint32 lastseppos = commandName.find_last_of( <font class="stringliteral">" "</font> );
+00256 string prefix;
+00257 <font class="keywordtype">bool</font> useprefix;
+00258 <font class="keywordflow">if</font> ( lastseppos != string::npos )
+00259 {
+00260 prefix = commandName.substr( 0, lastseppos+1 );
+00261 commandName.erase( 0, lastseppos+1 );
+00262 useprefix = <font class="keyword">true</font>;
+00263 }
+00264 <font class="keywordflow">else</font>
+00265 {
+00266 useprefix = <font class="keyword">false</font>;
+00267 }
+00268
+00269 string lowerCommandName = <a class="code" href="namespaceNLMISC.html#a229">strlwr</a>(const_cast&lt;const string &amp;&gt;(commandName));
+00270 <font class="comment">// Build the list of matching command names</font>
+00271 vector&lt;string&gt; matchingnames;
+00272 <font class="keywordflow">for</font> (TCommand::iterator comm = (*Commands).begin(); comm != (*Commands).end(); comm++)
+00273 {
+00274 string first = <a class="code" href="namespaceNLMISC.html#a229">strlwr</a>(const_cast&lt;const string &amp;&gt;((*comm).first));
+00275 <font class="keywordflow">if</font> (first.find( lowerCommandName ) == 0)
+00276 {
+00277 matchingnames.push_back( (*comm).first );
+00278 }
+00279 }
+00280
+00281 <font class="comment">// Do not complete if there is no result</font>
+00282 <font class="keywordflow">if</font> ( matchingnames.empty() )
+00283 {
+00284 log.<a class="code" href="classNLMISC_1_1CLog.html#a8">displayNL</a>( <font class="stringliteral">"No matching command"</font> );
+00285 <font class="keywordflow">goto</font> returnFromExpand;
+00286 }
+00287
+00288 <font class="comment">// Complete if there is a single result</font>
+00289 <font class="keywordflow">if</font> ( matchingnames.size() == 1 )
+00290 {
+00291 commandName = matchingnames.front() + <font class="stringliteral">" "</font>;
+00292 <font class="keywordflow">goto</font> returnFromExpand;
+00293 }
+00294
+00295 <font class="comment">// Try to complete to the common part if there are several results</font>
+00296 {
+00297 <font class="comment">// Stop loop when a name size is i or names[i] are different</font>
+00298 string commonstr = commandName;
+00299 uint i = commandName.size();
+00300 <font class="keywordflow">while</font> ( true )
+00301 {
+00302 <font class="keywordtype">char</font> letter = 0;
+00303 vector&lt;string&gt;::iterator imn;
+00304 <font class="keywordflow">for</font> ( imn=matchingnames.begin(); imn!=matchingnames.end(); ++imn )
+00305 {
+00306 <font class="comment">// Return common string if the next letter is not the same in all matching names</font>
+00307 <font class="keywordflow">if</font> ( ((*imn).size() == i) || ( (letter!=0) &amp;&amp; ((*imn)[i] != letter) ) )
+00308 {
+00309 log.<a class="code" href="classNLMISC_1_1CLog.html#a8">displayNL</a>( <font class="stringliteral">"(Matching command not unique)"</font> );
+00310 <font class="keyword">static</font> string lastCommandName;
+00311 commandName = commonstr;
+00312 <font class="keywordflow">if</font> ( lastCommandName == commandName )
+00313 {
+00314 <font class="comment">// Display all the matching names </font>
+00315 vector&lt;string&gt;::iterator imn2;
+00316 stringstream ss;
+00317 ss &lt;&lt; <font class="stringliteral">"Matching commands:"</font> &lt;&lt; endl;
+00318 <font class="keywordflow">for</font> ( imn2=matchingnames.begin(); imn2!=matchingnames.end(); ++imn2 )
+00319 {
+00320 ss &lt;&lt; <font class="stringliteral">" "</font> &lt;&lt; (*imn2);
+00321 }
+00322 log.<a class="code" href="classNLMISC_1_1CLog.html#a8">displayNL</a>( <font class="stringliteral">"%s"</font>, ss.str().c_str() );
+00323 }
+00324 lastCommandName = commandName;
+00325 <font class="keywordflow">goto</font> returnFromExpand;
+00326 }
+00327 <font class="comment">// Add the next letter to the common string if it is the same in all matching names</font>
+00328 <font class="keywordflow">else</font> <font class="keywordflow">if</font> ( letter == 0 )
+00329 {
+00330 letter = (*imn)[i];
+00331 }
+00332 }
+00333 commonstr += letter;
+00334 ++i;
+00335 }
+00336 }
+00337
+00338 returnFromExpand:
+00339
+00340 <font class="comment">// Put back the prefix</font>
+00341 <font class="keywordflow">if</font> ( useprefix )
+00342 {
+00343 commandName = prefix + commandName;
+00344 }
+00345 }
+00346
+00347
+<a name="l00348"></a><a class="code" href="classNLMISC_1_1ICommand.html#d2">00348</a> <font class="keywordtype">void</font> ICommand::serialCommands (IStream &amp;f)
+00349 {
+00350 vector&lt;CSerialCommand&gt; cmd;
+00351 <font class="keywordflow">for</font> (TCommand::iterator comm = (*Commands).begin(); comm != (*Commands).end(); comm++)
+00352 {
+00353 cmd.push_back (CSerialCommand ((*comm).first, (*comm).second-&gt;Type));
+00354 }
+00355 f.serialCont (cmd);
+00356 }
+00357
+00358
+00359 <a class="code" href="namespaceNLMISC.html#a288">NLMISC_COMMAND</a>(help,<font class="stringliteral">"display help on a specific variable/commands or on all variables and commands"</font>, <font class="stringliteral">"[&lt;variable&gt;|&lt;command&gt;]"</font>)
+00360 {
+00361 <font class="keywordflow">if</font> (args.size() == 0)
+00362 {
+00363 <font class="comment">// display all commands</font>
+00364 <font class="keywordflow">for</font> (TCommand::iterator comm = (*Commands).begin(); comm != (*Commands).end(); comm++)
+00365 {
+00366 log.displayNL(<font class="stringliteral">"%-15s: %s"</font>, (*comm).first.c_str(), (*comm).second-&gt;HelpString.c_str());
+00367 }
+00368 }
+00369 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (args.size() == 1)
+00370 {
+00371 <font class="comment">// display help of the command</font>
+00372 TCommand::iterator comm = (*Commands).find(args[0].c_str());
+00373 <font class="keywordflow">if</font> (comm == (*Commands).end ())
+00374 {
+00375 log.displayNL(<font class="stringliteral">"command '%s' not found"</font>, args[0].c_str());
+00376 }
+00377 <font class="keywordflow">else</font>
+00378 {
+00379 log.displayNL(<font class="stringliteral">"%s"</font>, (*comm).second-&gt;HelpString.c_str());
+00380 log.displayNL(<font class="stringliteral">"usage: %s %s"</font>, (*comm).first.c_str(), (*comm).second-&gt;CommandArgs.c_str(), (*comm).second-&gt;HelpString.c_str());
+00381 }
+00382 }
+00383 <font class="keywordflow">else</font>
+00384 {
+00385 <font class="keywordflow">return</font> <font class="keyword">false</font>;
+00386 }
+00387 <font class="keywordflow">return</font> <font class="keyword">true</font>;
+00388 }
+00389
+00390 } <font class="comment">// NLMISC</font>
+</pre></div>
+
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