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doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<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 &commandWithArgs, CLog &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<string> 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> && commandWithArgs[i] != <font class="charliteral">'\t'</font> && commandWithArgs[i] != <font class="charliteral">'\n'</font> && 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 < 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->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 &commandName, <a class="code" href="classNLMISC_1_1CLog.html">NLMISC::CLog</a> &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<const string &>(commandName)); +00270 <font class="comment">// Build the list of matching command names</font> +00271 vector<string> 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<const string &>((*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<string>::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) && ((*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<string>::iterator imn2; +00316 stringstream ss; +00317 ss << <font class="stringliteral">"Matching commands:"</font> << endl; +00318 <font class="keywordflow">for</font> ( imn2=matchingnames.begin(); imn2!=matchingnames.end(); ++imn2 ) +00319 { +00320 ss << <font class="stringliteral">" "</font> << (*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 &f) +00349 { +00350 vector<CSerialCommand> 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->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">"[<variable>|<command>]"</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->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->HelpString.c_str()); +00380 log.displayNL(<font class="stringliteral">"usage: %s %s"</font>, (*comm).first.c_str(), (*comm).second->CommandArgs.c_str(), (*comm).second->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> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |