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cmd.c

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program 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; either version 2
of the License, or (at your option) any later version.

This program 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.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// cmd.c -- Quake script command processing module

#include "quakedef.h"

00024 typedef struct cmdalias_s
{
      struct cmdalias_s *next;
      char name[MAX_ALIAS_NAME];
      char *value;
      qboolean initstate; // indicates this command existed at init
      char *initialvalue; // backup copy of value at init
} cmdalias_t;

static cmdalias_t *cmd_alias;

static qboolean cmd_wait;

static mempool_t *cmd_mempool;

static char cmd_tokenizebuffer[CMD_TOKENIZELENGTH];
static int cmd_tokenizebufferpos = 0;

//=============================================================================

/*
============
Cmd_Wait_f

Causes execution of the remainder of the command buffer to be delayed until
next frame.  This allows commands like:
bind g "impulse 5 ; +attack ; wait ; -attack ; impulse 2"
============
*/
static void Cmd_Wait_f (void)
{
      cmd_wait = true;
}

00058 typedef struct cmddeferred_s
{
      struct cmddeferred_s *next;
      char *value;
      double time;
} cmddeferred_t;

static cmddeferred_t *cmd_deferred_list = NULL;

/*
============
Cmd_Defer_f

Cause a command to be executed after a delay.
============
*/
static void Cmd_Defer_f (void)
{
      if(Cmd_Argc() == 1)
      {
            double time = Sys_DoubleTime();
            cmddeferred_t *next = cmd_deferred_list;
            if(!next)
                  Con_Printf("No commands are pending.\n");
            while(next)
            {
                  Con_Printf("-> In %9.2f: %s\n", next->time-time, next->value);
                  next = next->next;
            }
      } else if(Cmd_Argc() == 2 && !strcasecmp("clear", Cmd_Argv(1)))
      {
            while(cmd_deferred_list)
            {
                  cmddeferred_t *cmd = cmd_deferred_list;
                  cmd_deferred_list = cmd->next;
                  Mem_Free(cmd->value);
                  Mem_Free(cmd);
            }
      } else if(Cmd_Argc() == 3)
      {
            const char *value = Cmd_Argv(2);
            cmddeferred_t *defcmd = (cmddeferred_t*)Mem_Alloc(tempmempool, sizeof(*defcmd));
            size_t len = strlen(value);

            defcmd->time = Sys_DoubleTime() + atof(Cmd_Argv(1));
            defcmd->value = (char*)Mem_Alloc(tempmempool, len+1);
            memcpy(defcmd->value, value, len+1);
            defcmd->next = NULL;

            if(cmd_deferred_list)
            {
                  cmddeferred_t *next = cmd_deferred_list;
                  while(next->next)
                        next = next->next;
                  next->next = defcmd;
            } else
                  cmd_deferred_list = defcmd;
            /* Stupid me... this changes the order... so commands with the same delay go blub :S
              defcmd->next = cmd_deferred_list;
              cmd_deferred_list = defcmd;*/
      } else {
            Con_Printf("usage: defer <seconds> <command>\n"
                     "       defer clear\n");
            return;
      }
}

/*
============
Cmd_Centerprint_f

Print something to the center of the screen using SCR_Centerprint
============
*/
static void Cmd_Centerprint_f (void)
{
      char msg[MAX_INPUTLINE];
      unsigned int i, c, p;
      c = Cmd_Argc();
      if(c >= 2)
      {
            strlcpy(msg, Cmd_Argv(1), sizeof(msg));
            for(i = 2; i < c; ++i)
            {
                  strlcat(msg, " ", sizeof(msg));
                  strlcat(msg, Cmd_Argv(i), sizeof(msg));
            }
            c = strlen(msg);
            for(p = 0, i = 0; i < c; ++i)
            {
                  if(msg[i] == '\\')
                  {
                        if(msg[i+1] == 'n')
                              msg[p++] = '\n';
                        else if(msg[i+1] == '\\')
                              msg[p++] = '\\';
                        else {
                              msg[p++] = '\\';
                              msg[p++] = msg[i+1];
                        }
                        ++i;
                  } else {
                        msg[p++] = msg[i];
                  }
            }
            msg[p] = '\0';
            SCR_CenterPrint(msg);
      }
}

/*
=============================================================================

                                    COMMAND BUFFER

=============================================================================
*/

static sizebuf_t  cmd_text;
static unsigned char          cmd_text_buf[CMDBUFSIZE];

/*
============
Cbuf_AddText

Adds command text at the end of the buffer
============
*/
void Cbuf_AddText (const char *text)
{
      int         l;

      l = (int)strlen (text);

      if (cmd_text.cursize + l >= cmd_text.maxsize)
      {
            Con_Print("Cbuf_AddText: overflow\n");
            return;
      }

      SZ_Write (&cmd_text, (const unsigned char *)text, (int)strlen (text));
}


/*
============
Cbuf_InsertText

Adds command text immediately after the current command
Adds a \n to the text
FIXME: actually change the command buffer to do less copying
============
*/
void Cbuf_InsertText (const char *text)
{
      char  *temp;
      int         templen;

      // copy off any commands still remaining in the exec buffer
      templen = cmd_text.cursize;
      if (templen)
      {
            temp = (char *)Mem_Alloc (tempmempool, templen);
            memcpy (temp, cmd_text.data, templen);
            SZ_Clear (&cmd_text);
      }
      else
            temp = NULL;

      // add the entire text of the file
      Cbuf_AddText (text);

      // add the copied off data
      if (temp != NULL)
      {
            SZ_Write (&cmd_text, (const unsigned char *)temp, templen);
            Mem_Free (temp);
      }
}

/*
============
Cbuf_Execute_Deferred --blub
============
*/
void Cbuf_Execute_Deferred (void)
{
      cmddeferred_t *cmd, *prev;
      double time = Sys_DoubleTime();
      prev = NULL;
      cmd = cmd_deferred_list;
      while(cmd)
      {
            if(cmd->time <= time)
            {
                  Cbuf_AddText(cmd->value);
                  Cbuf_AddText(";\n");
                  Mem_Free(cmd->value);

                  if(prev) {
                        prev->next = cmd->next;
                        Mem_Free(cmd);
                        cmd = prev->next;
                  } else {
                        cmd_deferred_list = cmd->next;
                        Mem_Free(cmd);
                        cmd = cmd_deferred_list;
                  }
                  continue;
            }
            prev = cmd;
            cmd = cmd->next;
      }
}

/*
============
Cbuf_Execute
============
*/
static void Cmd_PreprocessString( const char *intext, char *outtext, unsigned maxoutlen, cmdalias_t *alias );
void Cbuf_Execute (void)
{
      int i;
      char *text;
      char line[MAX_INPUTLINE];
      char preprocessed[MAX_INPUTLINE];
      char *firstchar;
      qboolean quotes;
      char *comment;

      // LordHavoc: making sure the tokenizebuffer doesn't get filled up by repeated crashes
      cmd_tokenizebufferpos = 0;

      Cbuf_Execute_Deferred();
      while (cmd_text.cursize)
      {
// find a \n or ; line break
            text = (char *)cmd_text.data;

            quotes = false;
            comment = NULL;
            for (i=0 ; i < cmd_text.cursize ; i++)
            {
                  if(!comment)
                  {
                        if (text[i] == '"')
                              quotes = !quotes;

                        if(quotes)
                        {
                              // make sure i doesn't get > cursize which causes a negative
                              // size in memmove, which is fatal --blub
                              if (i < (cmd_text.cursize-1) && (text[i] == '\\' && (text[i+1] == '"' || text[i+1] == '\\')))
                                    i++;
                        }
                        else
                        {
                              if(text[i] == '/' && text[i + 1] == '/' && (i == 0 || ISWHITESPACE(text[i-1])))
                                    comment = &text[i];
                              if(text[i] == ';')
                                    break;      // don't break if inside a quoted string or comment
                        }
                  }

                  if (text[i] == '\r' || text[i] == '\n')
                        break;
            }

            // better than CRASHING on overlong input lines that may SOMEHOW enter the buffer
            if(i >= MAX_INPUTLINE)
            {
                  Con_Printf("Warning: console input buffer had an overlong line. Ignored.\n");
                  line[0] = 0;
            }
            else
            {
                  memcpy (line, text, comment ? (comment - text) : i);
                  line[comment ? (comment - text) : i] = 0;
            }

// delete the text from the command buffer and move remaining commands down
// this is necessary because commands (exec, alias) can insert data at the
// beginning of the text buffer

            if (i == cmd_text.cursize)
                  cmd_text.cursize = 0;
            else
            {
                  i++;
                  cmd_text.cursize -= i;
                  memmove (cmd_text.data, text+i, cmd_text.cursize);
            }

// execute the command line
            firstchar = line;
            while(*firstchar && ISWHITESPACE(*firstchar))
                  ++firstchar;
            if(
                  (strncmp(firstchar, "alias", 5) || !ISWHITESPACE(firstchar[5]))
                  &&
                  (strncmp(firstchar, "bind", 4) || !ISWHITESPACE(firstchar[4]))
                  &&
                  (strncmp(firstchar, "in_bind", 7) || !ISWHITESPACE(firstchar[7]))
            )
            {
                  Cmd_PreprocessString( line, preprocessed, sizeof(preprocessed), NULL );
                  Cmd_ExecuteString (preprocessed, src_command);
            }
            else
            {
                  Cmd_ExecuteString (line, src_command);
            }

            if (cmd_wait)
            {     // skip out while text still remains in buffer, leaving it
                  // for next frame
                  cmd_wait = false;
                  break;
            }
      }
}

/*
==============================================================================

                                    SCRIPT COMMANDS

==============================================================================
*/

/*
===============
Cmd_StuffCmds_f

Adds command line parameters as script statements
Commands lead with a +, and continue until a - or another +
quake +prog jctest.qp +cmd amlev1
quake -nosound +cmd amlev1
===============
*/
qboolean host_stuffcmdsrun = false;
void Cmd_StuffCmds_f (void)
{
      int         i, j, l;
      // this is for all commandline options combined (and is bounds checked)
      char  build[MAX_INPUTLINE];

      if (Cmd_Argc () != 1)
      {
            Con_Print("stuffcmds : execute command line parameters\n");
            return;
      }

      // no reason to run the commandline arguments twice
      if (host_stuffcmdsrun)
            return;

      host_stuffcmdsrun = true;
      build[0] = 0;
      l = 0;
      for (i = 0;i < com_argc;i++)
      {
            if (com_argv[i] && com_argv[i][0] == '+' && (com_argv[i][1] < '0' || com_argv[i][1] > '9') && l + strlen(com_argv[i]) - 1 <= sizeof(build) - 1)
            {
                  j = 1;
                  while (com_argv[i][j])
                        build[l++] = com_argv[i][j++];
                  i++;
                  for (;i < com_argc;i++)
                  {
                        if (!com_argv[i])
                              continue;
                        if ((com_argv[i][0] == '+' || com_argv[i][0] == '-') && (com_argv[i][1] < '0' || com_argv[i][1] > '9'))
                              break;
                        if (l + strlen(com_argv[i]) + 4 > sizeof(build) - 1)
                              break;
                        build[l++] = ' ';
                        if (strchr(com_argv[i], ' '))
                              build[l++] = '\"';
                        for (j = 0;com_argv[i][j];j++)
                              build[l++] = com_argv[i][j];
                        if (strchr(com_argv[i], ' '))
                              build[l++] = '\"';
                  }
                  build[l++] = '\n';
                  i--;
            }
      }
      // now terminate the combined string and prepend it to the command buffer
      // we already reserved space for the terminator
      build[l++] = 0;
      Cbuf_InsertText (build);
}

static void Cmd_Exec(const char *filename)
{
      char *f;

      if (!strcmp(filename, "config.cfg"))
      {
            filename = CONFIGFILENAME;
            if (COM_CheckParm("-noconfig"))
                  return; // don't execute config.cfg
      }

      f = (char *)FS_LoadFile (filename, tempmempool, false, NULL);
      if (!f)
      {
            Con_Printf("couldn't exec %s\n",filename);
            return;
      }
      Con_Printf("execing %s\n",filename);

      // if executing default.cfg for the first time, lock the cvar defaults
      // it may seem backwards to insert this text BEFORE the default.cfg
      // but Cbuf_InsertText inserts before, so this actually ends up after it.
      if (strlen(filename) >= 11 && !strcmp(filename + strlen(filename) - 11, "default.cfg"))
            Cbuf_InsertText("\ncvar_lockdefaults\n");

      // insert newline after the text to make sure the last line is terminated (some text editors omit the trailing newline)
      // (note: insertion order here is backwards from execution order, so this adds it after the text, by calling it before...)
      Cbuf_InsertText ("\n");
      Cbuf_InsertText (f);
      Mem_Free(f);

      // special defaults for specific games go here, these execute before default.cfg
      // Nehahra pushable crates malfunction in some levels if this is on
      // Nehahra NPC AI is confused by blowupfallenzombies
      if (gamemode == GAME_NEHAHRA)
            Cbuf_InsertText("\nsv_gameplayfix_upwardvelocityclearsongroundflag 0\nsv_gameplayfix_blowupfallenzombies 0\n\n");
      // hipnotic mission pack has issues in their 'friendly monster' ai, which seem to attempt to attack themselves for some reason when findradius() returns non-solid entities.
      // hipnotic mission pack has issues with bobbing water entities 'jittering' between different heights on alternate frames at the default 0.0138889 ticrate, 0.02 avoids this issue
      // hipnotic mission pack has issues in their proximity mine sticking code, which causes them to bounce off.
      if (gamemode == GAME_HIPNOTIC)
            Cbuf_InsertText("\nsv_gameplayfix_blowupfallenzombies 0\nsys_ticrate 0.02\nsv_gameplayfix_slidemoveprojectiles 0\n\n");
      // rogue mission pack has a guardian boss that does not wake up if findradius returns one of the entities around its spawn area
      if (gamemode == GAME_ROGUE)
            Cbuf_InsertText("\nsv_gameplayfix_findradiusdistancetobox 0\n\n");
      if (gamemode == GAME_NEXUIZ)
            Cbuf_InsertText("\nsv_gameplayfix_q2airaccelerate 1\nsv_gameplayfix_stepmultipletimes 1\n\n");
      if (gamemode == GAME_TENEBRAE)
            Cbuf_InsertText("\nr_shadow_gloss 2\nr_shadow_bumpscale_basetexture 4\n\n");
}

/*
===============
Cmd_Exec_f
===============
*/
static void Cmd_Exec_f (void)
{
      fssearch_t *s;
      int i;

      if (Cmd_Argc () != 2)
      {
            Con_Print("exec <filename> : execute a script file\n");
            return;
      }

      s = FS_Search(Cmd_Argv(1), true, true);
      if(!s || !s->numfilenames)
      {
            Con_Printf("couldn't exec %s\n",Cmd_Argv(1));
            return;
      }

      for(i = 0; i < s->numfilenames; ++i)
            Cmd_Exec(s->filenames[i]);

      FS_FreeSearch(s);
}


/*
===============
Cmd_Echo_f

Just prints the rest of the line to the console
===============
*/
static void Cmd_Echo_f (void)
{
      int         i;

      for (i=1 ; i<Cmd_Argc() ; i++)
            Con_Printf("%s ",Cmd_Argv(i));
      Con_Print("\n");
}

// DRESK - 5/14/06
// Support Doom3-style Toggle Console Command
/*
===============
Cmd_Toggle_f

Toggles a specified console variable amongst the values specified (default is 0 and 1)
===============
*/
static void Cmd_Toggle_f(void)
{
      // Acquire Number of Arguments
      int nNumArgs = Cmd_Argc();

      if(nNumArgs == 1)
            // No Arguments Specified; Print Usage
            Con_Print("Toggle Console Variable - Usage\n  toggle <variable> - toggles between 0 and 1\n  toggle <variable> <value> - toggles between 0 and <value>\n  toggle <variable> [string 1] [string 2]...[string n] - cycles through all strings\n");
      else
      { // Correct Arguments Specified
            // Acquire Potential CVar
            cvar_t* cvCVar = Cvar_FindVar( Cmd_Argv(1) );

            if(cvCVar != NULL)
            { // Valid CVar
                  if(nNumArgs == 2)
                  { // Default Usage
                        if(cvCVar->integer)
                              Cvar_SetValueQuick(cvCVar, 0);
                        else
                              Cvar_SetValueQuick(cvCVar, 1);
                  }
                  else
                  if(nNumArgs == 3)
                  { // 0 and Specified Usage
                        if(cvCVar->integer == atoi(Cmd_Argv(2) ) )
                              // CVar is Specified Value; // Reset to 0
                              Cvar_SetValueQuick(cvCVar, 0);
                        else
                        if(cvCVar->integer == 0)
                              // CVar is 0; Specify Value
                              Cvar_SetQuick(cvCVar, Cmd_Argv(2) );
                        else
                              // CVar does not match; Reset to 0
                              Cvar_SetValueQuick(cvCVar, 0);
                  }
                  else
                  { // Variable Values Specified
                        int nCnt;
                        int bFound = 0;

                        for(nCnt = 2; nCnt < nNumArgs; nCnt++)
                        { // Cycle through Values
                              if( strcmp(cvCVar->string, Cmd_Argv(nCnt) ) == 0)
                              { // Current Value Located; Increment to Next
                                    if( (nCnt + 1) == nNumArgs)
                                          // Max Value Reached; Reset
                                          Cvar_SetQuick(cvCVar, Cmd_Argv(2) );
                                    else
                                          // Next Value
                                          Cvar_SetQuick(cvCVar, Cmd_Argv(nCnt + 1) );

                                    // End Loop
                                    nCnt = nNumArgs;
                                    // Assign Found
                                    bFound = 1;
                              }
                        }
                        if(!bFound)
                              // Value not Found; Reset to Original
                              Cvar_SetQuick(cvCVar, Cmd_Argv(2) );
                  }

            }
            else
            { // Invalid CVar
                  Con_Printf("ERROR : CVar '%s' not found\n", Cmd_Argv(1) );
            }
      }
}

/*
===============
Cmd_Alias_f

Creates a new command that executes a command string (possibly ; seperated)
===============
*/
static void Cmd_Alias_f (void)
{
      cmdalias_t  *a;
      char        cmd[MAX_INPUTLINE];
      int               i, c;
      const char        *s;
      size_t            alloclen;

      if (Cmd_Argc() == 1)
      {
            Con_Print("Current alias commands:\n");
            for (a = cmd_alias ; a ; a=a->next)
                  Con_Printf("%s : %s", a->name, a->value);
            return;
      }

      s = Cmd_Argv(1);
      if (strlen(s) >= MAX_ALIAS_NAME)
      {
            Con_Print("Alias name is too long\n");
            return;
      }

      // if the alias already exists, reuse it
      for (a = cmd_alias ; a ; a=a->next)
      {
            if (!strcmp(s, a->name))
            {
                  Z_Free (a->value);
                  break;
            }
      }

      if (!a)
      {
            cmdalias_t *prev, *current;

            a = (cmdalias_t *)Z_Malloc (sizeof(cmdalias_t));
            strlcpy (a->name, s, sizeof (a->name));
            // insert it at the right alphanumeric position
            for( prev = NULL, current = cmd_alias ; current && strcmp( current->name, a->name ) < 0 ; prev = current, current = current->next )
                  ;
            if( prev ) {
                  prev->next = a;
            } else {
                  cmd_alias = a;
            }
            a->next = current;
      }


// copy the rest of the command line
      cmd[0] = 0;       // start out with a null string
      c = Cmd_Argc();
      for (i=2 ; i < c ; i++)
      {
            if (i != 2)
                  strlcat (cmd, " ", sizeof (cmd));
            strlcat (cmd, Cmd_Argv(i), sizeof (cmd));
      }
      strlcat (cmd, "\n", sizeof (cmd));

      alloclen = strlen (cmd) + 1;
      if(alloclen >= 2)
            cmd[alloclen - 2] = '\n'; // to make sure a newline is appended even if too long
      a->value = (char *)Z_Malloc (alloclen);
      memcpy (a->value, cmd, alloclen);
}

/*
===============
Cmd_UnAlias_f

Remove existing aliases.
===============
*/
static void Cmd_UnAlias_f (void)
{
      cmdalias_t  *a, *p;
      int i;
      const char *s;

      if(Cmd_Argc() == 1)
      {
            Con_Print("unalias: Usage: unalias alias1 [alias2 ...]\n");
            return;
      }

      for(i = 1; i < Cmd_Argc(); ++i)
      {
            s = Cmd_Argv(i);
            p = NULL;
            for(a = cmd_alias; a; p = a, a = a->next)
            {
                  if(!strcmp(s, a->name))
                  {
                        if (a->initstate) // we can not remove init aliases
                              continue;
                        if(a == cmd_alias)
                              cmd_alias = a->next;
                        if(p)
                              p->next = a->next;
                        Z_Free(a->value);
                        Z_Free(a);
                        break;
                  }
            }
            if(!a)
                  Con_Printf("unalias: %s alias not found\n", s);
      }
}

/*
=============================================================================

                              COMMAND EXECUTION

=============================================================================
*/

00756 typedef struct cmd_function_s
{
      struct cmd_function_s *next;
      const char *name;
      const char *description;
      xcommand_t consolefunction;
      xcommand_t clientfunction;
      qboolean csqcfunc;
      qboolean initstate; // indicates this command existed at init
} cmd_function_t;

static int cmd_argc;
static const char *cmd_argv[MAX_ARGS];
static const char *cmd_null_string = "";
static const char *cmd_args;
cmd_source_t cmd_source;


static cmd_function_t *cmd_functions;           // possible commands to execute

static const char *Cmd_GetDirectCvarValue(const char *varname, cmdalias_t *alias, qboolean *is_multiple)
{
      cvar_t *cvar;
      long argno;
      char *endptr;

      if(is_multiple)
            *is_multiple = false;

      if(!varname || !*varname)
            return NULL;

      if(alias)
      {
            if(!strcmp(varname, "*"))
            {
                  if(is_multiple)
                        *is_multiple = true;
                  return Cmd_Args();
            }
            else if(!strcmp(varname, "#"))
            {
                  return va("%d", Cmd_Argc());
            }
            else if(varname[strlen(varname) - 1] == '-')
            {
                  argno = strtol(varname, &endptr, 10);
                  if(endptr == varname + strlen(varname) - 1)
                  {
                        // whole string is a number, apart from the -
                        const char *p = Cmd_Args();
                        for(; argno > 1; --argno)
                              if(!COM_ParseToken_Console(&p))
                                    break;
                        if(p)
                        {
                              if(is_multiple)
                                    *is_multiple = true;

                              // kill pre-argument whitespace
                              for (;*p && ISWHITESPACE(*p);p++)
                                    ;

                              return p;
                        }
                  }
            }
            else
            {
                  argno = strtol(varname, &endptr, 10);
                  if(*endptr == 0)
                  {
                        // whole string is a number
                        // NOTE: we already made sure we don't have an empty cvar name!
                        if(argno >= 0 && argno < Cmd_Argc())
                              return Cmd_Argv(argno);
                  }
            }
      }

      if((cvar = Cvar_FindVar(varname)) && !(cvar->flags & CVAR_PRIVATE))
            return cvar->string;

      return NULL;
}

qboolean Cmd_QuoteString(char *out, size_t outlen, const char *in, const char *quoteset, qboolean putquotes)
{
      qboolean quote_quot = !!strchr(quoteset, '"');
      qboolean quote_backslash = !!strchr(quoteset, '\\');
      qboolean quote_dollar = !!strchr(quoteset, '$');

      if(putquotes)
      {
            if(outlen <= 2)
            {
                  *out++ = 0;
                  return false;
            }
            *out++ = '"'; --outlen;
            --outlen;
      }

      while(*in)
      {
            if(*in == '"' && quote_quot)
            {
                  if(outlen <= 2)
                        goto fail;
                  *out++ = '\\'; --outlen;
                  *out++ = '"'; --outlen;
            }
            else if(*in == '\\' && quote_backslash)
            {
                  if(outlen <= 2)
                        goto fail;
                  *out++ = '\\'; --outlen;
                  *out++ = '\\'; --outlen;
            }
            else if(*in == '$' && quote_dollar)
            {
                  if(outlen <= 2)
                        goto fail;
                  *out++ = '$'; --outlen;
                  *out++ = '$'; --outlen;
            }
            else
            {
                  if(outlen <= 1)
                        goto fail;
                  *out++ = *in; --outlen;
            }
            ++in;
      }
      if(putquotes)
            *out++ = '"';
      *out++ = 0;
      return true;
fail:
      if(putquotes)
            *out++ = '"';
      *out++ = 0;
      return false;
}

static const char *Cmd_GetCvarValue(const char *var, size_t varlen, cmdalias_t *alias)
{
      static char varname[MAX_INPUTLINE];
      static char varval[MAX_INPUTLINE];
      const char *varstr;
      char *varfunc;
static char asis[] = "asis"; // just to suppress const char warnings

      if(varlen >= MAX_INPUTLINE)
            varlen = MAX_INPUTLINE - 1;
      memcpy(varname, var, varlen);
      varname[varlen] = 0;
      varfunc = strchr(varname, ' ');

      if(varfunc)
      {
            *varfunc = 0;
            ++varfunc;
      }

      if(*var == 0)
      {
            // empty cvar name?
            return NULL;
      }

      varstr = NULL;

      if(varname[0] == '$')
            varstr = Cmd_GetDirectCvarValue(Cmd_GetDirectCvarValue(varname + 1, alias, NULL), alias, NULL);
      else
      {
            qboolean is_multiple = false;
            // Exception: $* and $n- don't use the quoted form by default
            varstr = Cmd_GetDirectCvarValue(varname, alias, &is_multiple);
            if(is_multiple)
                  if(!varfunc)
                        varfunc = asis;
      }

      if(!varstr)
      {
            if(alias)
                  Con_Printf("Warning: Could not expand $%s in alias %s\n", varname, alias->name);
            else
                  Con_Printf("Warning: Could not expand $%s\n", varname);
            return NULL;
      }

      if(!varfunc || !strcmp(varfunc, "q")) // note: quoted form is default, use "asis" to override!
      {
            // quote it so it can be used inside double quotes
            // we just need to replace " by \", and of course, double backslashes
            Cmd_QuoteString(varval, sizeof(varval), varstr, "\"\\", false);
            return varval;
      }
      else if(!strcmp(varfunc, "asis"))
      {
            return varstr;
      }
      else
            Con_Printf("Unknown variable function %s\n", varfunc);

      return varstr;
}

/*
Cmd_PreprocessString

Preprocesses strings and replaces $*, $param#, $cvar accordingly. Also strips comments.
*/
static void Cmd_PreprocessString( const char *intext, char *outtext, unsigned maxoutlen, cmdalias_t *alias ) {
      const char *in;
      size_t eat, varlen;
      unsigned outlen;
      const char *val;

      // don't crash if there's no room in the outtext buffer
      if( maxoutlen == 0 ) {
            return;
      }
      maxoutlen--; // because of \0

      in = intext;
      outlen = 0;

      while( *in && outlen < maxoutlen ) {
            if( *in == '$' ) {
                  // this is some kind of expansion, see what comes after the $
                  in++;

                  // The console does the following preprocessing:
                  //
                  // - $$ is transformed to a single dollar sign.
                  // - $var or ${var} are expanded to the contents of the named cvar,
                  //   with quotation marks and backslashes quoted so it can safely
                  //   be used inside quotation marks (and it should always be used
                  //   that way)
                  // - ${var asis} inserts the cvar value as is, without doing this
                  //   quoting
                  // - prefix the cvar name with a dollar sign to do indirection;
                  //   for example, if $x has the value timelimit, ${$x} will return
                  //   the value of $timelimit
                  // - when expanding an alias, the special variable name $* refers
                  //   to all alias parameters, and a number refers to that numbered
                  //   alias parameter, where the name of the alias is $0, the first
                  //   parameter is $1 and so on; as a special case, $* inserts all
                  //   parameters, without extra quoting, so one can use $* to just
                  //   pass all parameters around. All parameters starting from $n
                  //   can be referred to as $n- (so $* is equivalent to $1-).
                  //
                  // Note: when expanding an alias, cvar expansion is done in the SAME step
                  // as alias expansion so that alias parameters or cvar values containing
                  // dollar signs have no unwanted bad side effects. However, this needs to
                  // be accounted for when writing complex aliases. For example,
                  //   alias foo "set x NEW; echo $x"
                  // actually expands to
                  //   "set x NEW; echo OLD"
                  // and will print OLD! To work around this, use a second alias:
                  //   alias foo "set x NEW; foo2"
                  //   alias foo2 "echo $x"
                  //
                  // Also note: lines starting with alias are exempt from cvar expansion.
                  // If you want cvar expansion, write "alias" instead:
                  //
                  //   set x 1
                  //   alias foo "echo $x"
                  //   "alias" bar "echo $x"
                  //   set x 2
                  //
                  // foo will print 2, because the variable $x will be expanded when the alias
                  // gets expanded. bar will print 1, because the variable $x was expanded
                  // at definition time. foo can be equivalently defined as
                  //
                  //   "alias" foo "echo $$x"
                  //
                  // because at definition time, $$ will get replaced to a single $.

                  if( *in == '$' ) {
                        val = "$";
                        eat = 1;
                  } else if(*in == '{') {
                        varlen = strcspn(in + 1, "}");
                        if(in[varlen + 1] == '}')
                        {
                              val = Cmd_GetCvarValue(in + 1, varlen, alias);
                              eat = varlen + 2;
                        }
                        else
                        {
                              // ran out of data?
                              val = NULL;
                              eat = varlen + 1;
                        }
                  } else {
                        varlen = strspn(in, "#*0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-");
                        val = Cmd_GetCvarValue(in, varlen, alias);
                        eat = varlen;
                  }
                  if(val)
                  {
                        // insert the cvar value
                        while(*val && outlen < maxoutlen)
                              outtext[outlen++] = *val++;
                        in += eat;
                  }
                  else
                  {
                        // copy the unexpanded text
                        outtext[outlen++] = '$';
                        while(eat && outlen < maxoutlen)
                        {
                              outtext[outlen++] = *in++;
                              --eat;
                        }
                  }
            }
            else 
                  outtext[outlen++] = *in++;
      }
      outtext[outlen] = 0;
}

/*
============
Cmd_ExecuteAlias

Called for aliases and fills in the alias into the cbuffer
============
*/
static void Cmd_ExecuteAlias (cmdalias_t *alias)
{
      static char buffer[ MAX_INPUTLINE ];
      static char buffer2[ MAX_INPUTLINE ];
      Cmd_PreprocessString( alias->value, buffer, sizeof(buffer) - 2, alias );
      // insert at start of command buffer, so that aliases execute in order
      // (fixes bug introduced by Black on 20050705)

      // Note: Cbuf_PreprocessString will be called on this string AGAIN! So we
      // have to make sure that no second variable expansion takes place, otherwise
      // alias parameters containing dollar signs can have bad effects.
      Cmd_QuoteString(buffer2, sizeof(buffer2), buffer, "$", false);
      Cbuf_InsertText( buffer2 );
}

/*
========
Cmd_List

      CmdList Added by EvilTypeGuy eviltypeguy@qeradiant.com
      Thanks to Matthias "Maddes" Buecher, http://www.inside3d.com/qip/

========
*/
static void Cmd_List_f (void)
{
      cmd_function_t *cmd;
      const char *partial;
      size_t len;
      int count;
      qboolean ispattern;

      if (Cmd_Argc() > 1)
      {
            partial = Cmd_Argv (1);
            len = strlen(partial);
      }
      else
      {
            partial = NULL;
            len = 0;
      }

      ispattern = partial && (strchr(partial, '*') || strchr(partial, '?'));

      count = 0;
      for (cmd = cmd_functions; cmd; cmd = cmd->next)
      {
            if (partial && (ispattern ? !matchpattern_with_separator(cmd->name, partial, false, "", false) : strncmp(partial, cmd->name, len)))
                  continue;
            Con_Printf("%s : %s\n", cmd->name, cmd->description);
            count++;
      }

      if (len)
      {
            if(ispattern)
                  Con_Printf("%i Command%s matching \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
            else
                  Con_Printf("%i Command%s beginning with \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
      }
      else
            Con_Printf("%i Command%s\n\n", count, (count > 1) ? "s" : "");
}

static void Cmd_Apropos_f(void)
{
      cmd_function_t *cmd;
      cvar_t *cvar;
      cmdalias_t *alias;
      const char *partial;
      int count;
      qboolean ispattern;

      if (Cmd_Argc() > 1)
            partial = Cmd_Args();
      else
      {
            Con_Printf("usage: apropos <string>\n");
            return;
      }

      ispattern = partial && (strchr(partial, '*') || strchr(partial, '?'));
      if(!ispattern)
            partial = va("*%s*", partial);

      count = 0;
      for (cvar = cvar_vars; cvar; cvar = cvar->next)
      {
            if (!matchpattern_with_separator(cvar->name, partial, true, "", false))
            if (!matchpattern_with_separator(cvar->description, partial, true, "", false))
                  continue;
            Con_Printf ("cvar ^3%s^7 is \"%s\" [\"%s\"] %s\n", cvar->name, cvar->string, cvar->defstring, cvar->description);
            count++;
      }
      for (cmd = cmd_functions; cmd; cmd = cmd->next)
      {
            if (!matchpattern_with_separator(cmd->name, partial, true, "", false))
            if (!matchpattern_with_separator(cmd->description, partial, true, "", false))
                  continue;
            Con_Printf("command ^2%s^7: %s\n", cmd->name, cmd->description);
            count++;
      }
      for (alias = cmd_alias; alias; alias = alias->next)
      {
            // procede here a bit differently as an alias value always got a final \n
            if (!matchpattern_with_separator(alias->name, partial, true, "", false))
            if (!matchpattern_with_separator(alias->value, partial, true, "\n", false)) // when \n is as separator wildcards don't match it
                  continue;
            Con_Printf("alias ^5%s^7: %s", alias->name, alias->value); // do not print an extra \n
            count++;
      }
      Con_Printf("%i result%s\n\n", count, (count > 1) ? "s" : "");
}

/*
============
Cmd_Init
============
*/
void Cmd_Init (void)
{
      cmd_mempool = Mem_AllocPool("commands", 0, NULL);
      // space for commands and script files
      cmd_text.data = cmd_text_buf;
      cmd_text.maxsize = sizeof(cmd_text_buf);
      cmd_text.cursize = 0;
}

void Cmd_Init_Commands (void)
{
//
// register our commands
//
      Cmd_AddCommand ("stuffcmds",Cmd_StuffCmds_f, "execute commandline parameters (must be present in quake.rc script)");
      Cmd_AddCommand ("exec",Cmd_Exec_f, "execute a script file");
      Cmd_AddCommand ("echo",Cmd_Echo_f, "print a message to the console (useful in scripts)");
      Cmd_AddCommand ("alias",Cmd_Alias_f, "create a script function (parameters are passed in as $X (being X a number), $* for all parameters, $X- for all parameters starting from $X). Without arguments show the list of all alias");
      Cmd_AddCommand ("unalias",Cmd_UnAlias_f, "remove an alias");
      Cmd_AddCommand ("cmd", Cmd_ForwardToServer, "send a console commandline to the server (used by some mods)");
      Cmd_AddCommand ("wait", Cmd_Wait_f, "make script execution wait for next rendered frame");
      Cmd_AddCommand ("set", Cvar_Set_f, "create or change the value of a console variable");
      Cmd_AddCommand ("seta", Cvar_SetA_f, "create or change the value of a console variable that will be saved to config.cfg");
      Cmd_AddCommand ("unset", Cvar_Del_f, "delete a cvar (does not work for static ones like _cl_name, or read-only ones)");
#ifdef FILLALLCVARSWITHRUBBISH
      Cmd_AddCommand ("fillallcvarswithrubbish", Cvar_FillAll_f, "fill all cvars with a specified number of characters to provoke buffer overruns");
#endif /* FILLALLCVARSWITHRUBBISH */

      // 2000-01-09 CmdList, CvarList commands By Matthias "Maddes" Buecher
      // Added/Modified by EvilTypeGuy eviltypeguy@qeradiant.com
      Cmd_AddCommand ("cmdlist", Cmd_List_f, "lists all console commands beginning with the specified prefix or matching the specified wildcard pattern");
      Cmd_AddCommand ("cvarlist", Cvar_List_f, "lists all console variables beginning with the specified prefix or matching the specified wildcard pattern");
      Cmd_AddCommand ("apropos", Cmd_Apropos_f, "lists all console variables/commands/aliases containing the specified string in the name or description");

      Cmd_AddCommand ("cvar_lockdefaults", Cvar_LockDefaults_f, "stores the current values of all cvars into their default values, only used once during startup after parsing default.cfg");
      Cmd_AddCommand ("cvar_resettodefaults_all", Cvar_ResetToDefaults_All_f, "sets all cvars to their locked default values");
      Cmd_AddCommand ("cvar_resettodefaults_nosaveonly", Cvar_ResetToDefaults_NoSaveOnly_f, "sets all non-saved cvars to their locked default values (variables that will not be saved to config.cfg)");
      Cmd_AddCommand ("cvar_resettodefaults_saveonly", Cvar_ResetToDefaults_SaveOnly_f, "sets all saved cvars to their locked default values (variables that will be saved to config.cfg)");

      Cmd_AddCommand ("cprint", Cmd_Centerprint_f, "print something at the screen center");
      Cmd_AddCommand ("defer", Cmd_Defer_f, "execute a command in the future");

      // DRESK - 5/14/06
      // Support Doom3-style Toggle Command
      Cmd_AddCommand( "toggle", Cmd_Toggle_f, "toggles a console variable's values (use for more info)");
}

/*
============
Cmd_Shutdown
============
*/
void Cmd_Shutdown(void)
{
      Mem_FreePool(&cmd_mempool);
}

/*
============
Cmd_Argc
============
*/
int         Cmd_Argc (void)
{
      return cmd_argc;
}

/*
============
Cmd_Argv
============
*/
const char *Cmd_Argv (int arg)
{
      if (arg >= cmd_argc )
            return cmd_null_string;
      return cmd_argv[arg];
}

/*
============
Cmd_Args
============
*/
const char *Cmd_Args (void)
{
      return cmd_args;
}


/*
============
Cmd_TokenizeString

Parses the given string into command line tokens.
============
*/
// AK: This function should only be called from ExcuteString because the current design is a bit of an hack
static void Cmd_TokenizeString (const char *text)
{
      int l;

      cmd_argc = 0;
      cmd_args = NULL;

      while (1)
      {
            // skip whitespace up to a /n
            while (*text && ISWHITESPACE(*text) && *text != '\r' && *text != '\n')
                  text++;

            // line endings:
            // UNIX: \n
            // Mac: \r
            // Windows: \r\n
            if (*text == '\n' || *text == '\r')
            {
                  // a newline separates commands in the buffer
                  if (*text == '\r' && text[1] == '\n')
                        text++;
                  text++;
                  break;
            }

            if (!*text)
                  return;

            if (cmd_argc == 1)
                  cmd_args = text;

            if (!COM_ParseToken_Console(&text))
                  return;

            if (cmd_argc < MAX_ARGS)
            {
                  l = (int)strlen(com_token) + 1;
                  if (cmd_tokenizebufferpos + l > CMD_TOKENIZELENGTH)
                  {
                        Con_Printf("Cmd_TokenizeString: ran out of %i character buffer space for command arguements\n", CMD_TOKENIZELENGTH);
                        break;
                  }
                  memcpy (cmd_tokenizebuffer + cmd_tokenizebufferpos, com_token, l);
                  cmd_argv[cmd_argc] = cmd_tokenizebuffer + cmd_tokenizebufferpos;
                  cmd_tokenizebufferpos += l;
                  cmd_argc++;
            }
      }
}


/*
============
Cmd_AddCommand
============
*/
void Cmd_AddCommand_WithClientCommand (const char *cmd_name, xcommand_t consolefunction, xcommand_t clientfunction, const char *description)
{
      cmd_function_t *cmd;
      cmd_function_t *prev, *current;

// fail if the command is a variable name
      if (Cvar_FindVar( cmd_name ))
      {
            Con_Printf("Cmd_AddCommand: %s already defined as a var\n", cmd_name);
            return;
      }

// fail if the command already exists
      for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
      {
            if (!strcmp (cmd_name, cmd->name))
            {
                  if (consolefunction || clientfunction)
                  {
                        Con_Printf("Cmd_AddCommand: %s already defined\n", cmd_name);
                        return;
                  }
                  else  //[515]: csqc
                  {
                        cmd->csqcfunc = true;
                        return;
                  }
            }
      }

      cmd = (cmd_function_t *)Mem_Alloc(cmd_mempool, sizeof(cmd_function_t));
      cmd->name = cmd_name;
      cmd->consolefunction = consolefunction;
      cmd->clientfunction = clientfunction;
      cmd->description = description;
      if(!consolefunction && !clientfunction)               //[515]: csqc
            cmd->csqcfunc = true;
      cmd->next = cmd_functions;

// insert it at the right alphanumeric position
      for( prev = NULL, current = cmd_functions ; current && strcmp( current->name, cmd->name ) < 0 ; prev = current, current = current->next )
            ;
      if( prev ) {
            prev->next = cmd;
      } else {
            cmd_functions = cmd;
      }
      cmd->next = current;
}

void Cmd_AddCommand (const char *cmd_name, xcommand_t function, const char *description)
{
      Cmd_AddCommand_WithClientCommand (cmd_name, function, NULL, description);
}

/*
============
Cmd_Exists
============
*/
qboolean Cmd_Exists (const char *cmd_name)
{
      cmd_function_t    *cmd;

      for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
            if (!strcmp (cmd_name,cmd->name))
                  return true;

      return false;
}


/*
============
Cmd_CompleteCommand
============
*/
const char *Cmd_CompleteCommand (const char *partial)
{
      cmd_function_t *cmd;
      size_t len;

      len = strlen(partial);

      if (!len)
            return NULL;

// check functions
      for (cmd = cmd_functions; cmd; cmd = cmd->next)
            if (!strncasecmp(partial, cmd->name, len))
                  return cmd->name;

      return NULL;
}

/*
      Cmd_CompleteCountPossible

      New function for tab-completion system
      Added by EvilTypeGuy
      Thanks to Fett erich@heintz.com
      Thanks to taniwha

*/
int Cmd_CompleteCountPossible (const char *partial)
{
      cmd_function_t *cmd;
      size_t len;
      int h;

      h = 0;
      len = strlen(partial);

      if (!len)
            return 0;

      // Loop through the command list and count all partial matches
      for (cmd = cmd_functions; cmd; cmd = cmd->next)
            if (!strncasecmp(partial, cmd->name, len))
                  h++;

      return h;
}

/*
      Cmd_CompleteBuildList

      New function for tab-completion system
      Added by EvilTypeGuy
      Thanks to Fett erich@heintz.com
      Thanks to taniwha

*/
const char **Cmd_CompleteBuildList (const char *partial)
{
      cmd_function_t *cmd;
      size_t len = 0;
      size_t bpos = 0;
      size_t sizeofbuf = (Cmd_CompleteCountPossible (partial) + 1) * sizeof (const char *);
      const char **buf;

      len = strlen(partial);
      buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
      // Loop through the alias list and print all matches
      for (cmd = cmd_functions; cmd; cmd = cmd->next)
            if (!strncasecmp(partial, cmd->name, len))
                  buf[bpos++] = cmd->name;

      buf[bpos] = NULL;
      return buf;
}

// written by LordHavoc
void Cmd_CompleteCommandPrint (const char *partial)
{
      cmd_function_t *cmd;
      size_t len = strlen(partial);
      // Loop through the command list and print all matches
      for (cmd = cmd_functions; cmd; cmd = cmd->next)
            if (!strncasecmp(partial, cmd->name, len))
                  Con_Printf("^2%s^7: %s\n", cmd->name, cmd->description);
}

/*
      Cmd_CompleteAlias

      New function for tab-completion system
      Added by EvilTypeGuy
      Thanks to Fett erich@heintz.com
      Thanks to taniwha

*/
const char *Cmd_CompleteAlias (const char *partial)
{
      cmdalias_t *alias;
      size_t len;

      len = strlen(partial);

      if (!len)
            return NULL;

      // Check functions
      for (alias = cmd_alias; alias; alias = alias->next)
            if (!strncasecmp(partial, alias->name, len))
                  return alias->name;

      return NULL;
}

// written by LordHavoc
void Cmd_CompleteAliasPrint (const char *partial)
{
      cmdalias_t *alias;
      size_t len = strlen(partial);
      // Loop through the alias list and print all matches
      for (alias = cmd_alias; alias; alias = alias->next)
            if (!strncasecmp(partial, alias->name, len))
                  Con_Printf("^5%s^7: %s", alias->name, alias->value);
}


/*
      Cmd_CompleteAliasCountPossible

      New function for tab-completion system
      Added by EvilTypeGuy
      Thanks to Fett erich@heintz.com
      Thanks to taniwha

*/
int Cmd_CompleteAliasCountPossible (const char *partial)
{
      cmdalias_t  *alias;
      size_t            len;
      int               h;

      h = 0;

      len = strlen(partial);

      if (!len)
            return 0;

      // Loop through the command list and count all partial matches
      for (alias = cmd_alias; alias; alias = alias->next)
            if (!strncasecmp(partial, alias->name, len))
                  h++;

      return h;
}

/*
      Cmd_CompleteAliasBuildList

      New function for tab-completion system
      Added by EvilTypeGuy
      Thanks to Fett erich@heintz.com
      Thanks to taniwha

*/
const char **Cmd_CompleteAliasBuildList (const char *partial)
{
      cmdalias_t *alias;
      size_t len = 0;
      size_t bpos = 0;
      size_t sizeofbuf = (Cmd_CompleteAliasCountPossible (partial) + 1) * sizeof (const char *);
      const char **buf;

      len = strlen(partial);
      buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
      // Loop through the alias list and print all matches
      for (alias = cmd_alias; alias; alias = alias->next)
            if (!strncasecmp(partial, alias->name, len))
                  buf[bpos++] = alias->name;

      buf[bpos] = NULL;
      return buf;
}

void Cmd_ClearCsqcFuncs (void)
{
      cmd_function_t *cmd;
      for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
            cmd->csqcfunc = false;
}

qboolean CL_VM_ConsoleCommand (const char *cmd);
/*
============
Cmd_ExecuteString

A complete command line has been parsed, so try to execute it
FIXME: lookupnoadd the token to speed search?
============
*/
void Cmd_ExecuteString (const char *text, cmd_source_t src)
{
      int oldpos;
      int found;
      cmd_function_t *cmd;
      cmdalias_t *a;

      oldpos = cmd_tokenizebufferpos;
      cmd_source = src;
      found = false;

      Cmd_TokenizeString (text);

// execute the command line
      if (!Cmd_Argc())
      {
            cmd_tokenizebufferpos = oldpos;
            return;           // no tokens
      }

// check functions
      for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
      {
            if (!strcasecmp (cmd_argv[0],cmd->name))
            {
                  if (cmd->csqcfunc && CL_VM_ConsoleCommand (text))     //[515]: csqc
                        return;
                  switch (src)
                  {
                  case src_command:
                        if (cmd->consolefunction)
                              cmd->consolefunction ();
                        else if (cmd->clientfunction)
                        {
                              if (cls.state == ca_connected)
                              {
                                    // forward remote commands to the server for execution
                                    Cmd_ForwardToServer();
                              }
                              else
                                    Con_Printf("Can not send command \"%s\", not connected.\n", Cmd_Argv(0));
                        }
                        else
                              Con_Printf("Command \"%s\" can not be executed\n", Cmd_Argv(0));
                        found = true;
                        goto command_found;
                  case src_client:
                        if (cmd->clientfunction)
                        {
                              cmd->clientfunction ();
                              cmd_tokenizebufferpos = oldpos;
                              return;
                        }
                        break;
                  }
                  break;
            }
      }
command_found:

      // if it's a client command and no command was found, say so.
      if (cmd_source == src_client)
      {
            Con_Printf("player \"%s\" tried to %s\n", host_client->name, text);
            cmd_tokenizebufferpos = oldpos;
            return;
      }

// check alias
      for (a=cmd_alias ; a ; a=a->next)
      {
            if (!strcasecmp (cmd_argv[0], a->name))
            {
                  Cmd_ExecuteAlias(a);
                  cmd_tokenizebufferpos = oldpos;
                  return;
            }
      }

      if(found) // if the command was hooked and found, all is good
      {
            cmd_tokenizebufferpos = oldpos;
            return;
      }

// check cvars
      if (!Cvar_Command () && host_framecount > 0)
            Con_Printf("Unknown command \"%s\"\n", Cmd_Argv(0));

      cmd_tokenizebufferpos = oldpos;
}


/*
===================
Cmd_ForwardStringToServer

Sends an entire command string over to the server, unprocessed
===================
*/
void Cmd_ForwardStringToServer (const char *s)
{
      char temp[128];
      if (cls.state != ca_connected)
      {
            Con_Printf("Can't \"%s\", not connected\n", s);
            return;
      }

      if (!cls.netcon)
            return;

      // LordHavoc: thanks to Fuh for bringing the pure evil of SZ_Print to my
      // attention, it has been eradicated from here, its only (former) use in
      // all of darkplaces.
      if (cls.protocol == PROTOCOL_QUAKEWORLD)
            MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
      else
            MSG_WriteByte(&cls.netcon->message, clc_stringcmd);
      if ((!strncmp(s, "say ", 4) || !strncmp(s, "say_team ", 9)) && cl_locs_enable.integer)
      {
            // say/say_team commands can replace % character codes with status info
            while (*s)
            {
                  if (*s == '%' && s[1])
                  {
                        // handle proquake message macros
                        temp[0] = 0;
                        switch (s[1])
                        {
                        case 'l': // current location
                              CL_Locs_FindLocationName(temp, sizeof(temp), cl.movement_origin);
                              break;
                        case 'h': // current health
                              dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_HEALTH]);
                              break;
                        case 'a': // current armor
                              dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_ARMOR]);
                              break;
                        case 'x': // current rockets
                              dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_ROCKETS]);
                              break;
                        case 'c': // current cells
                              dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_CELLS]);
                              break;
                        // silly proquake macros
                        case 'd': // loc at last death
                              CL_Locs_FindLocationName(temp, sizeof(temp), cl.lastdeathorigin);
                              break;
                        case 't': // current time
                              dpsnprintf(temp, sizeof(temp), "%.0f:%.0f", floor(cl.time / 60), cl.time - floor(cl.time / 60) * 60);
                              break;
                        case 'r': // rocket launcher status ("I have RL", "I need rockets", "I need RL")
                              if (!(cl.stats[STAT_ITEMS] & IT_ROCKET_LAUNCHER))
                                    dpsnprintf(temp, sizeof(temp), "I need RL");
                              else if (!cl.stats[STAT_ROCKETS])
                                    dpsnprintf(temp, sizeof(temp), "I need rockets");
                              else
                                    dpsnprintf(temp, sizeof(temp), "I have RL");
                              break;
                        case 'p': // powerup status (outputs "quad" "pent" and "eyes" according to status)
                              if (cl.stats[STAT_ITEMS] & IT_QUAD)
                              {
                                    if (temp[0])
                                          strlcat(temp, " ", sizeof(temp));
                                    strlcat(temp, "quad", sizeof(temp));
                              }
                              if (cl.stats[STAT_ITEMS] & IT_INVULNERABILITY)
                              {
                                    if (temp[0])
                                          strlcat(temp, " ", sizeof(temp));
                                    strlcat(temp, "pent", sizeof(temp));
                              }
                              if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
                              {
                                    if (temp[0])
                                          strlcat(temp, " ", sizeof(temp));
                                    strlcat(temp, "eyes", sizeof(temp));
                              }
                              break;
                        case 'w': // weapon status (outputs "SSG:NG:SNG:GL:RL:LG" with the text between : characters omitted if you lack the weapon)
                              if (cl.stats[STAT_ITEMS] & IT_SUPER_SHOTGUN)
                                    strlcat(temp, "SSG", sizeof(temp));
                              strlcat(temp, ":", sizeof(temp));
                              if (cl.stats[STAT_ITEMS] & IT_NAILGUN)
                                    strlcat(temp, "NG", sizeof(temp));
                              strlcat(temp, ":", sizeof(temp));
                              if (cl.stats[STAT_ITEMS] & IT_SUPER_NAILGUN)
                                    strlcat(temp, "SNG", sizeof(temp));
                              strlcat(temp, ":", sizeof(temp));
                              if (cl.stats[STAT_ITEMS] & IT_GRENADE_LAUNCHER)
                                    strlcat(temp, "GL", sizeof(temp));
                              strlcat(temp, ":", sizeof(temp));
                              if (cl.stats[STAT_ITEMS] & IT_ROCKET_LAUNCHER)
                                    strlcat(temp, "RL", sizeof(temp));
                              strlcat(temp, ":", sizeof(temp));
                              if (cl.stats[STAT_ITEMS] & IT_LIGHTNING)
                                    strlcat(temp, "LG", sizeof(temp));
                              break;
                        default:
                              // not a recognized macro, print it as-is...
                              temp[0] = s[0];
                              temp[1] = s[1];
                              temp[2] = 0;
                              break;
                        }
                        // write the resulting text
                        SZ_Write(&cls.netcon->message, (unsigned char *)temp, strlen(temp));
                        s += 2;
                        continue;
                  }
                  MSG_WriteByte(&cls.netcon->message, *s);
                  s++;
            }
            MSG_WriteByte(&cls.netcon->message, 0);
      }
      else // any other command is passed on as-is
            SZ_Write(&cls.netcon->message, (const unsigned char *)s, (int)strlen(s) + 1);
}

/*
===================
Cmd_ForwardToServer

Sends the entire command line over to the server
===================
*/
void Cmd_ForwardToServer (void)
{
      const char *s;
      if (!strcasecmp(Cmd_Argv(0), "cmd"))
      {
            // we want to strip off "cmd", so just send the args
            s = Cmd_Argc() > 1 ? Cmd_Args() : "";
      }
      else
      {
            // we need to keep the command name, so send Cmd_Argv(0), a space and then Cmd_Args()
            s = va("%s %s", Cmd_Argv(0), Cmd_Argc() > 1 ? Cmd_Args() : "");
      }
      // don't send an empty forward message if the user tries "cmd" by itself
      if (!s || !*s)
            return;
      Cmd_ForwardStringToServer(s);
}


/*
================
Cmd_CheckParm

Returns the position (1 to argc-1) in the command's argument list
where the given parameter apears, or 0 if not present
================
*/

int Cmd_CheckParm (const char *parm)
{
      int i;

      if (!parm)
      {
            Con_Printf ("Cmd_CheckParm: NULL");
            return 0;
      }

      for (i = 1; i < Cmd_Argc (); i++)
            if (!strcasecmp (parm, Cmd_Argv (i)))
                  return i;

      return 0;
}



void Cmd_SaveInitState(void)
{
      cmd_function_t *f;
      cmdalias_t *a;
      for (f = cmd_functions;f;f = f->next)
            f->initstate = true;
      for (a = cmd_alias;a;a = a->next)
      {
            a->initstate = true;
            a->initialvalue = Mem_strdup(zonemempool, a->value);
      }
      Cvar_SaveInitState();
}

void Cmd_RestoreInitState(void)
{
      cmd_function_t *f, **fp;
      cmdalias_t *a, **ap;
      for (fp = &cmd_functions;(f = *fp);)
      {
            if (f->initstate)
                  fp = &f->next;
            else
            {
                  // destroy this command, it didn't exist at init
                  Con_DPrintf("Cmd_RestoreInitState: Destroying command %s\n", f->name);
                  *fp = f->next;
                  Z_Free(f);
            }
      }
      for (ap = &cmd_alias;(a = *ap);)
      {
            if (a->initstate)
            {
                  // restore this alias, it existed at init
                  if (strcmp(a->value ? a->value : "", a->initialvalue ? a->initialvalue : ""))
                  {
                        Con_DPrintf("Cmd_RestoreInitState: Restoring alias %s\n", a->name);
                        if (a->value)
                              Z_Free(a->value);
                        a->value = Mem_strdup(zonemempool, a->initialvalue);
                  }
                  ap = &a->next;
            }
            else
            {
                  // free this alias, it didn't exist at init...
                  Con_DPrintf("Cmd_RestoreInitState: Destroying alias %s\n", a->name);
                  *ap = a->next;
                  if (a->value)
                        Z_Free(a->value);
                  Z_Free(a);
            }
      }
      Cvar_RestoreInitState();
}

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