console.cpp

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00001 /* $Id: console.cpp 18028 2009-11-09 10:40:33Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "console_internal.h"
00014 #include "network/network.h"
00015 #include "network/network_func.h"
00016 #include "debug.h"
00017 
00018 #include <stdarg.h>
00019 
00020 #define ICON_BUFFER 79
00021 #define ICON_HISTORY_SIZE 20
00022 #define ICON_LINE_HEIGHT 12
00023 #define ICON_RIGHT_BORDERWIDTH 10
00024 #define ICON_BOTTOM_BORDERWIDTH 12
00025 #define ICON_MAX_ALIAS_LINES 40
00026 #define ICON_TOKEN_COUNT 20
00027 
00028 /* console parser */
00029 IConsoleCmd   *_iconsole_cmds;    
00030 IConsoleVar   *_iconsole_vars;    
00031 IConsoleAlias *_iconsole_aliases; 
00032 
00033 /* ** stdlib ** */
00034 byte _stdlib_developer = 1;
00035 bool _stdlib_con_developer = false;
00036 FILE *_iconsole_output_file;
00037 
00038 void IConsoleInit()
00039 {
00040   _iconsole_output_file = NULL;
00041 #ifdef ENABLE_NETWORK /* Initialize network only variables */
00042   _redirect_console_to_client = INVALID_CLIENT_ID;
00043 #endif
00044 
00045   IConsoleGUIInit();
00046 
00047   IConsoleStdLibRegister();
00048 }
00049 
00050 static void IConsoleWriteToLogFile(const char *string)
00051 {
00052   if (_iconsole_output_file != NULL) {
00053     /* if there is an console output file ... also print it there */
00054     const char *header = GetLogPrefix();
00055     if (fwrite(header, strlen(header), 1, _iconsole_output_file) != 1 ||
00056         fwrite(string, strlen(string), 1, _iconsole_output_file) != 1 ||
00057         fwrite("\n", 1, 1, _iconsole_output_file) != 1) {
00058       fclose(_iconsole_output_file);
00059       _iconsole_output_file = NULL;
00060       IConsolePrintF(CC_DEFAULT, "cannot write to log file");
00061     }
00062   }
00063 }
00064 
00065 bool CloseConsoleLogIfActive()
00066 {
00067   if (_iconsole_output_file != NULL) {
00068     IConsolePrintF(CC_DEFAULT, "file output complete");
00069     fclose(_iconsole_output_file);
00070     _iconsole_output_file = NULL;
00071     return true;
00072   }
00073 
00074   return false;
00075 }
00076 
00077 void IConsoleFree()
00078 {
00079   IConsoleGUIFree();
00080   CloseConsoleLogIfActive();
00081 }
00082 
00092 void IConsolePrint(ConsoleColour colour_code, const char *string)
00093 {
00094   char *str;
00095 #ifdef ENABLE_NETWORK
00096   if (_redirect_console_to_client != INVALID_CLIENT_ID) {
00097     /* Redirect the string to the client */
00098     NetworkServerSendRcon(_redirect_console_to_client, colour_code, string);
00099     return;
00100   }
00101 #endif
00102 
00103   /* Create a copy of the string, strip if of colours and invalid
00104    * characters and (when applicable) assign it to the console buffer */
00105   str = strdup(string);
00106   str_strip_colours(str);
00107   str_validate(str, str + strlen(str));
00108 
00109   if (_network_dedicated) {
00110     fprintf(stdout, "%s%s\n", GetLogPrefix(), str);
00111     fflush(stdout);
00112     IConsoleWriteToLogFile(str);
00113     free(str); // free duplicated string since it's not used anymore
00114     return;
00115   }
00116 
00117   IConsoleWriteToLogFile(str);
00118   IConsoleGUIPrint(colour_code, str);
00119 }
00120 
00126 void CDECL IConsolePrintF(ConsoleColour colour_code, const char *format, ...)
00127 {
00128   va_list va;
00129   char buf[ICON_MAX_STREAMSIZE];
00130 
00131   va_start(va, format);
00132   vsnprintf(buf, sizeof(buf), format, va);
00133   va_end(va);
00134 
00135   IConsolePrint(colour_code, buf);
00136 }
00137 
00146 void IConsoleDebug(const char *dbg, const char *string)
00147 {
00148   if (_stdlib_developer > 1)
00149     IConsolePrintF(CC_DEBUG, "dbg: [%s] %s", dbg, string);
00150 }
00151 
00157 void IConsoleWarning(const char *string)
00158 {
00159   if (_stdlib_developer > 0)
00160     IConsolePrintF(CC_WARNING, "WARNING: %s", string);
00161 }
00162 
00167 void IConsoleError(const char *string)
00168 {
00169   IConsolePrintF(CC_ERROR, "ERROR: %s", string);
00170 }
00171 
00179 bool GetArgumentInteger(uint32 *value, const char *arg)
00180 {
00181   char *endptr;
00182 
00183   if (strcmp(arg, "on") == 0 || strcmp(arg, "true") == 0) {
00184     *value = 1;
00185     return true;
00186   }
00187   if (strcmp(arg, "off") == 0 || strcmp(arg, "false") == 0) {
00188     *value = 0;
00189     return true;
00190   }
00191 
00192   *value = strtoul(arg, &endptr, 0);
00193   return arg != endptr;
00194 }
00195 
00196 /*  * *************************
00197     * hooking code            *
00198     * *************************/
00199 
00206 static void IConsoleHookAdd(IConsoleHooks *hooks, IConsoleHookTypes type, IConsoleHook *proc)
00207 {
00208   if (hooks == NULL || proc == NULL) return;
00209 
00210   switch (type) {
00211     case ICONSOLE_HOOK_ACCESS:
00212       hooks->access = proc;
00213       break;
00214     case ICONSOLE_HOOK_PRE_ACTION:
00215       hooks->pre = proc;
00216       break;
00217     case ICONSOLE_HOOK_POST_ACTION:
00218       hooks->post = proc;
00219       break;
00220     default: NOT_REACHED();
00221   }
00222 }
00223 
00232 static bool IConsoleHookHandle(const IConsoleHooks *hooks, IConsoleHookTypes type)
00233 {
00234   IConsoleHook *proc = NULL;
00235   if (hooks == NULL) return false;
00236 
00237   switch (type) {
00238     case ICONSOLE_HOOK_ACCESS:
00239       proc = hooks->access;
00240       break;
00241     case ICONSOLE_HOOK_PRE_ACTION:
00242       proc = hooks->pre;
00243       break;
00244     case ICONSOLE_HOOK_POST_ACTION:
00245       proc = hooks->post;
00246       break;
00247     default: NOT_REACHED();
00248   }
00249 
00250   return (proc == NULL) ? true : proc();
00251 }
00252 
00259 void IConsoleCmdHookAdd(const char *name, IConsoleHookTypes type, IConsoleHook *proc)
00260 {
00261   IConsoleCmd *cmd = IConsoleCmdGet(name);
00262   if (cmd == NULL) return;
00263   IConsoleHookAdd(&cmd->hook, type, proc);
00264 }
00265 
00272 void IConsoleVarHookAdd(const char *name, IConsoleHookTypes type, IConsoleHook *proc)
00273 {
00274   IConsoleVar *var = IConsoleVarGet(name);
00275   if (var == NULL) return;
00276   IConsoleHookAdd(&var->hook, type, proc);
00277 }
00278 
00284 #define IConsoleAddSorted(_base, item_new, IConsoleType, type)                 \
00285 {                                                                              \
00286   IConsoleType *item, *item_before;                                            \
00287   /* first command */                                                          \
00288   if (_base == NULL) {                                                         \
00289     _base = item_new;                                                          \
00290     return;                                                                    \
00291   }                                                                            \
00292                                                                                \
00293   item_before = NULL;                                                          \
00294   item = _base;                                                                \
00295                                                                                \
00296   /* BEGIN - Alphabetically insert the commands into the linked list */        \
00297   while (item != NULL) {                                                       \
00298     int i = strcmp(item->name, item_new->name);                                \
00299     if (i == 0) {                                                              \
00300       IConsoleError(type " with this name already exists; insertion aborted"); \
00301       free(item_new);                                                          \
00302       return;                                                                  \
00303     }                                                                          \
00304                                                                                \
00305     if (i > 0) break; /* insert at this position */                            \
00306                                                                                \
00307     item_before = item;                                                        \
00308     item = item->next;                                                         \
00309   }                                                                            \
00310                                                                                \
00311   if (item_before == NULL) {                                                   \
00312     _base = item_new;                                                          \
00313   } else {                                                                     \
00314     item_before->next = item_new;                                              \
00315   }                                                                            \
00316                                                                                \
00317   item_new->next = item;                                                       \
00318   /* END - Alphabetical insert */                                              \
00319 }
00320 
00326 void IConsoleCmdRegister(const char *name, IConsoleCmdProc *proc)
00327 {
00328   char *new_cmd = strdup(name);
00329   IConsoleCmd *item_new = MallocT<IConsoleCmd>(1);
00330 
00331   item_new->next = NULL;
00332   item_new->proc = proc;
00333   item_new->name = new_cmd;
00334 
00335   item_new->hook.access = NULL;
00336   item_new->hook.pre = NULL;
00337   item_new->hook.post = NULL;
00338 
00339   IConsoleAddSorted(_iconsole_cmds, item_new, IConsoleCmd, "a command");
00340 }
00341 
00347 IConsoleCmd *IConsoleCmdGet(const char *name)
00348 {
00349   IConsoleCmd *item;
00350 
00351   for (item = _iconsole_cmds; item != NULL; item = item->next) {
00352     if (strcmp(item->name, name) == 0) return item;
00353   }
00354   return NULL;
00355 }
00356 
00362 void IConsoleAliasRegister(const char *name, const char *cmd)
00363 {
00364   char *new_alias = strdup(name);
00365   char *cmd_aliased = strdup(cmd);
00366   IConsoleAlias *item_new = MallocT<IConsoleAlias>(1);
00367 
00368   item_new->next = NULL;
00369   item_new->cmdline = cmd_aliased;
00370   item_new->name = new_alias;
00371 
00372   IConsoleAddSorted(_iconsole_aliases, item_new, IConsoleAlias, "an alias");
00373 }
00374 
00380 IConsoleAlias *IConsoleAliasGet(const char *name)
00381 {
00382   IConsoleAlias *item;
00383 
00384   for (item = _iconsole_aliases; item != NULL; item = item->next) {
00385     if (strcmp(item->name, name) == 0) return item;
00386   }
00387 
00388   return NULL;
00389 }
00390 
00392 static inline int IConsoleCopyInParams(char *dst, const char *src, uint bufpos)
00393 {
00394   /* len is the amount of bytes to add excluding the '\0'-termination */
00395   int len = min(ICON_MAX_STREAMSIZE - bufpos - 1, (uint)strlen(src));
00396   strecpy(dst, src, dst + len);
00397 
00398   return len;
00399 }
00400 
00408 static void IConsoleAliasExec(const IConsoleAlias *alias, byte tokencount, char *tokens[ICON_TOKEN_COUNT])
00409 {
00410   const char *cmdptr;
00411   char *aliases[ICON_MAX_ALIAS_LINES], aliasstream[ICON_MAX_STREAMSIZE];
00412   uint i;
00413   uint a_index, astream_i;
00414 
00415   memset(&aliases, 0, sizeof(aliases));
00416   memset(&aliasstream, 0, sizeof(aliasstream));
00417 
00418   if (_stdlib_con_developer)
00419     IConsolePrintF(CC_DEBUG, "condbg: requested command is an alias; parsing...");
00420 
00421   aliases[0] = aliasstream;
00422   for (cmdptr = alias->cmdline, a_index = 0, astream_i = 0; *cmdptr != '\0'; cmdptr++) {
00423     if (a_index >= lengthof(aliases) || astream_i >= lengthof(aliasstream)) break;
00424 
00425     switch (*cmdptr) {
00426     case '\'': // ' will double for ""
00427       aliasstream[astream_i++] = '"';
00428       break;
00429     case ';': // Cmd seperator, start new command
00430       aliasstream[astream_i] = '\0';
00431       aliases[++a_index] = &aliasstream[++astream_i];
00432       cmdptr++;
00433       break;
00434     case '%': // Some or all parameters
00435       cmdptr++;
00436       switch (*cmdptr) {
00437       case '+': { // All parameters seperated: "[param 1]" "[param 2]"
00438         for (i = 0; i != tokencount; i++) {
00439           aliasstream[astream_i++] = '"';
00440           astream_i += IConsoleCopyInParams(&aliasstream[astream_i], tokens[i], astream_i);
00441           aliasstream[astream_i++] = '"';
00442           aliasstream[astream_i++] = ' ';
00443         }
00444       } break;
00445       case '!': { // Merge the parameters to one: "[param 1] [param 2] [param 3...]"
00446         aliasstream[astream_i++] = '"';
00447         for (i = 0; i != tokencount; i++) {
00448           astream_i += IConsoleCopyInParams(&aliasstream[astream_i], tokens[i], astream_i);
00449           aliasstream[astream_i++] = ' ';
00450         }
00451         aliasstream[astream_i++] = '"';
00452 
00453       } break;
00454         default: { // One specific parameter: %A = [param 1] %B = [param 2] ...
00455         int param = *cmdptr - 'A';
00456 
00457         if (param < 0 || param >= tokencount) {
00458           IConsoleError("too many or wrong amount of parameters passed to alias, aborting");
00459           IConsolePrintF(CC_WARNING, "Usage of alias '%s': %s", alias->name, alias->cmdline);
00460           return;
00461         }
00462 
00463         aliasstream[astream_i++] = '"';
00464         astream_i += IConsoleCopyInParams(&aliasstream[astream_i], tokens[param], astream_i);
00465         aliasstream[astream_i++] = '"';
00466       } break;
00467       } break;
00468 
00469     default:
00470       aliasstream[astream_i++] = *cmdptr;
00471       break;
00472     }
00473   }
00474 
00475   for (i = 0; i <= a_index; i++) IConsoleCmdExec(aliases[i]); // execute each alias in turn
00476 }
00477 
00487 void IConsoleVarStringRegister(const char *name, void *addr, uint32 size, const char *help)
00488 {
00489   IConsoleVar *var;
00490   IConsoleVarRegister(name, addr, ICONSOLE_VAR_STRING, help);
00491   var = IConsoleVarGet(name);
00492   var->size = size;
00493 }
00494 
00502 void IConsoleVarRegister(const char *name, void *addr, IConsoleVarTypes type, const char *help)
00503 {
00504   char *new_cmd = strdup(name);
00505   IConsoleVar *item_new = MallocT<IConsoleVar>(1);
00506 
00507   item_new->help = (help != NULL) ? strdup(help) : NULL;
00508 
00509   item_new->next = NULL;
00510   item_new->name = new_cmd;
00511   item_new->addr = addr;
00512   item_new->proc = NULL;
00513   item_new->type = type;
00514 
00515   item_new->hook.access = NULL;
00516   item_new->hook.pre = NULL;
00517   item_new->hook.post = NULL;
00518 
00519   IConsoleAddSorted(_iconsole_vars, item_new, IConsoleVar, "a variable");
00520 }
00521 
00527 IConsoleVar *IConsoleVarGet(const char *name)
00528 {
00529   IConsoleVar *item;
00530   for (item = _iconsole_vars; item != NULL; item = item->next) {
00531     if (strcmp(item->name, name) == 0) return item;
00532   }
00533 
00534   return NULL;
00535 }
00536 
00541 static char *IConsoleVarGetStringValue(const IConsoleVar *var)
00542 {
00543   static char tempres[50];
00544   char *value = tempres;
00545 
00546   switch (var->type) {
00547     case ICONSOLE_VAR_BOOLEAN:
00548       snprintf(tempres, sizeof(tempres), "%s", (*(bool*)var->addr) ? "on" : "off");
00549       break;
00550     case ICONSOLE_VAR_BYTE:
00551       snprintf(tempres, sizeof(tempres), "%u", *(byte*)var->addr);
00552       break;
00553     case ICONSOLE_VAR_UINT16:
00554       snprintf(tempres, sizeof(tempres), "%u", *(uint16*)var->addr);
00555       break;
00556     case ICONSOLE_VAR_UINT32:
00557       snprintf(tempres, sizeof(tempres), "%u",  *(uint32*)var->addr);
00558       break;
00559     case ICONSOLE_VAR_INT16:
00560       snprintf(tempres, sizeof(tempres), "%i", *(int16*)var->addr);
00561       break;
00562     case ICONSOLE_VAR_INT32:
00563       snprintf(tempres, sizeof(tempres), "%i",  *(int32*)var->addr);
00564       break;
00565     case ICONSOLE_VAR_STRING:
00566       value = (char*)var->addr;
00567       break;
00568     default: NOT_REACHED();
00569   }
00570 
00571   return value;
00572 }
00573 
00578 static void IConsoleVarPrintSetValue(const IConsoleVar *var)
00579 {
00580   char *value = IConsoleVarGetStringValue(var);
00581   IConsolePrintF(CC_WARNING, "'%s' changed to:  %s", var->name, value);
00582 }
00583 
00589 static void IConsoleVarSetValue(const IConsoleVar *var, uint32 value)
00590 {
00591   IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_PRE_ACTION);
00592   switch (var->type) {
00593     case ICONSOLE_VAR_BOOLEAN:
00594       *(bool*)var->addr = (value != 0);
00595       break;
00596     case ICONSOLE_VAR_BYTE:
00597       *(byte*)var->addr = (byte)value;
00598       break;
00599     case ICONSOLE_VAR_UINT16:
00600       *(uint16*)var->addr = (uint16)value;
00601       break;
00602     case ICONSOLE_VAR_INT16:
00603       *(int16*)var->addr = (int16)value;
00604       break;
00605     case ICONSOLE_VAR_UINT32:
00606       *(uint32*)var->addr = (uint32)value;
00607       break;
00608     case ICONSOLE_VAR_INT32:
00609       *(int32*)var->addr = (int32)value;
00610       break;
00611     default: NOT_REACHED();
00612   }
00613 
00614   IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_POST_ACTION);
00615   IConsoleVarPrintSetValue(var);
00616 }
00617 
00624 static void IConsoleVarSetStringvalue(const IConsoleVar *var, const char *value)
00625 {
00626   if (var->type != ICONSOLE_VAR_STRING || var->addr == NULL) return;
00627 
00628   IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_PRE_ACTION);
00629   ttd_strlcpy((char*)var->addr, value, var->size);
00630   IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_POST_ACTION);
00631   IConsoleVarPrintSetValue(var); // print out the new value, giving feedback
00632   return;
00633 }
00634 
00640 static uint32 IConsoleVarGetValue(const IConsoleVar *var)
00641 {
00642   uint32 result = 0;
00643 
00644   switch (var->type) {
00645     case ICONSOLE_VAR_BOOLEAN:
00646       result = *(bool*)var->addr;
00647       break;
00648     case ICONSOLE_VAR_BYTE:
00649       result = *(byte*)var->addr;
00650       break;
00651     case ICONSOLE_VAR_UINT16:
00652       result = *(uint16*)var->addr;
00653       break;
00654     case ICONSOLE_VAR_INT16:
00655       result = *(int16*)var->addr;
00656       break;
00657     case ICONSOLE_VAR_UINT32:
00658       result = *(uint32*)var->addr;
00659       break;
00660     case ICONSOLE_VAR_INT32:
00661       result = *(int32*)var->addr;
00662       break;
00663     default: NOT_REACHED();
00664   }
00665   return result;
00666 }
00667 
00671 void IConsoleVarPrintGetValue(const IConsoleVar *var)
00672 {
00673   char *value;
00674   /* Some variables need really specific handling, handle this in its
00675    * callback function */
00676   if (var->proc != NULL) {
00677     var->proc(0, NULL);
00678     return;
00679   }
00680 
00681   value = IConsoleVarGetStringValue(var);
00682   IConsolePrintF(CC_WARNING, "Current value for '%s' is:  %s", var->name, value);
00683 }
00684 
00692 static void IConsoleVarExec(const IConsoleVar *var, byte tokencount, char *token[ICON_TOKEN_COUNT])
00693 {
00694   const char *tokenptr = token[0];
00695   byte t_index = tokencount;
00696   uint32 value;
00697 
00698   if (_stdlib_con_developer)
00699     IConsolePrintF(CC_DEBUG, "condbg: requested command is a variable");
00700 
00701   if (tokencount == 0) { // Just print out value
00702     IConsoleVarPrintGetValue(var);
00703     return;
00704   }
00705 
00706   /* Use of assignment sign is not mandatory but supported, so just 'ignore it appropiately' */
00707   if (strcmp(tokenptr, "=") == 0) tokencount--;
00708 
00709   if (tokencount == 1) {
00710     /* Some variables need really special handling, handle it in their callback procedure */
00711     if (var->proc != NULL) {
00712       var->proc(tokencount, &token[t_index - tokencount]); // set the new value
00713       return;
00714     }
00715     /* Strings need special processing. No need to convert the argument to
00716      * an integer value, just copy over the argument on a one-by-one basis */
00717     if (var->type == ICONSOLE_VAR_STRING) {
00718       IConsoleVarSetStringvalue(var, token[t_index - tokencount]);
00719       return;
00720     } else if (GetArgumentInteger(&value, token[t_index - tokencount])) {
00721       IConsoleVarSetValue(var, value);
00722       return;
00723     }
00724 
00725     /* Increase or decrease the value by one. This of course can only happen to 'number' types */
00726     if (strcmp(tokenptr, "++") == 0 && var->type != ICONSOLE_VAR_STRING) {
00727       IConsoleVarSetValue(var, IConsoleVarGetValue(var) + 1);
00728       return;
00729     }
00730 
00731     if (strcmp(tokenptr, "--") == 0 && var->type != ICONSOLE_VAR_STRING) {
00732       IConsoleVarSetValue(var, IConsoleVarGetValue(var) - 1);
00733       return;
00734     }
00735   }
00736 
00737   IConsoleError("invalid variable assignment");
00738 }
00739 
00746 void IConsoleVarProcAdd(const char *name, IConsoleCmdProc *proc)
00747 {
00748   IConsoleVar *var = IConsoleVarGet(name);
00749   if (var == NULL) return;
00750   var->proc = proc;
00751 }
00752 
00758 void IConsoleCmdExec(const char *cmdstr)
00759 {
00760   IConsoleCmd   *cmd    = NULL;
00761   IConsoleAlias *alias  = NULL;
00762   IConsoleVar   *var    = NULL;
00763 
00764   const char *cmdptr;
00765   char *tokens[ICON_TOKEN_COUNT], tokenstream[ICON_MAX_STREAMSIZE];
00766   uint t_index, tstream_i;
00767 
00768   bool longtoken = false;
00769   bool foundtoken = false;
00770 
00771   if (cmdstr[0] == '#') return; // comments
00772 
00773   for (cmdptr = cmdstr; *cmdptr != '\0'; cmdptr++) {
00774     if (!IsValidChar(*cmdptr, CS_ALPHANUMERAL)) {
00775       IConsoleError("command contains malformed characters, aborting");
00776       IConsolePrintF(CC_ERROR, "ERROR: command was: '%s'", cmdstr);
00777       return;
00778     }
00779   }
00780 
00781   if (_stdlib_con_developer)
00782     IConsolePrintF(CC_DEBUG, "condbg: executing cmdline: '%s'", cmdstr);
00783 
00784   memset(&tokens, 0, sizeof(tokens));
00785   memset(&tokenstream, 0, sizeof(tokenstream));
00786 
00787   /* 1. Split up commandline into tokens, seperated by spaces, commands
00788    * enclosed in "" are taken as one token. We can only go as far as the amount
00789    * of characters in our stream or the max amount of tokens we can handle */
00790   for (cmdptr = cmdstr, t_index = 0, tstream_i = 0; *cmdptr != '\0'; cmdptr++) {
00791     if (t_index >= lengthof(tokens) || tstream_i >= lengthof(tokenstream)) break;
00792 
00793     switch (*cmdptr) {
00794     case ' ': // Token seperator
00795       if (!foundtoken) break;
00796 
00797       if (longtoken) {
00798         tokenstream[tstream_i] = *cmdptr;
00799       } else {
00800         tokenstream[tstream_i] = '\0';
00801         foundtoken = false;
00802       }
00803 
00804       tstream_i++;
00805       break;
00806     case '"': // Tokens enclosed in "" are one token
00807       longtoken = !longtoken;
00808       break;
00809     case '\\': // Escape character for ""
00810       if (cmdptr[1] == '"' && tstream_i + 1 < lengthof(tokenstream)) {
00811         tokenstream[tstream_i++] = *++cmdptr;
00812         break;
00813       }
00814       /* fallthrough */
00815     default: // Normal character
00816       tokenstream[tstream_i++] = *cmdptr;
00817 
00818       if (!foundtoken) {
00819         tokens[t_index++] = &tokenstream[tstream_i - 1];
00820         foundtoken = true;
00821       }
00822       break;
00823     }
00824   }
00825 
00826   if (_stdlib_con_developer) {
00827     uint i;
00828 
00829     for (i = 0; tokens[i] != NULL; i++) {
00830       IConsolePrintF(CC_DEBUG, "condbg: token %d is: '%s'", i, tokens[i]);
00831     }
00832   }
00833 
00834   if (tokens[0] == '\0') return; // don't execute empty commands
00835   /* 2. Determine type of command (cmd, alias or variable) and execute
00836    * First try commands, then aliases, and finally variables. Execute
00837    * the found action taking into account its hooking code
00838    */
00839   cmd = IConsoleCmdGet(tokens[0]);
00840   if (cmd != NULL) {
00841     if (IConsoleHookHandle(&cmd->hook, ICONSOLE_HOOK_ACCESS)) {
00842       IConsoleHookHandle(&cmd->hook, ICONSOLE_HOOK_PRE_ACTION);
00843       if (cmd->proc(t_index, tokens)) { // index started with 0
00844         IConsoleHookHandle(&cmd->hook, ICONSOLE_HOOK_POST_ACTION);
00845       } else {
00846         cmd->proc(0, NULL); // if command failed, give help
00847       }
00848     }
00849     return;
00850   }
00851 
00852   t_index--; // ignore the variable-name for comfort for both aliases and variaables
00853   alias = IConsoleAliasGet(tokens[0]);
00854   if (alias != NULL) {
00855     IConsoleAliasExec(alias, t_index, &tokens[1]);
00856     return;
00857   }
00858 
00859   var = IConsoleVarGet(tokens[0]);
00860   if (var != NULL) {
00861     if (IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_ACCESS)) {
00862       IConsoleVarExec(var, t_index, &tokens[1]);
00863     }
00864     return;
00865   }
00866 
00867   IConsoleError("command or variable not found");
00868 }

Generated on Tue Jan 5 21:02:53 2010 for OpenTTD by  doxygen 1.5.6