/*
 * CrossFire, A Multiplayer game for X-windows
 * 
 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
 * Copyright (C) 2002 Mark Wedel & Crossfire Development Team
 * Copyright (C) 1992 Frank Tore Johansen
 * 
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * The authors can be reached via e-mail at <crossfire@schmorp.de>
 */

#include <global.h>
#include <loader.h>
#include <sproto.h>

/* Handles misc. input request - things like hash table, malloc, maps,
 * who, etc.
 */

/* This command dumps the body information for object *op.
 * it doesn't care what the params are.
 * This is mostly meant as a debug command.
 */
int
command_body (object *op, char *params)
{
  int i;

  /* Too hard to try and make a header that lines everything up, so just 
   * give a description.
   */
  new_draw_info (NDI_UNIQUE, 0, op, "The first column is the name of the body location.");
  new_draw_info (NDI_UNIQUE, 0, op, "The second column is how many of those locations your body has.");
  new_draw_info (NDI_UNIQUE, 0, op, "The third column is how many slots in that location are available.");
  for (i = 0; i < NUM_BODY_LOCATIONS; i++)
    {
      /* really debugging - normally body_used should not be set to anything
       * if body_info isn't also set.
       */
      if (op->body_info[i] || op->body_used[i])
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "%-30s %5d %5d", body_locations[i].use_name, op->body_info[i], op->body_used[i]);
        }
    }
  if (!QUERY_FLAG (op, FLAG_USE_ARMOUR))
    new_draw_info (NDI_UNIQUE, 0, op, "You are not allowed to wear armor");
  if (!QUERY_FLAG (op, FLAG_USE_WEAPON))
    new_draw_info (NDI_UNIQUE, 0, op, "You are not allowed to use weapons");

  return 1;
}


int
command_motd (object *op, char *params)
{
  display_motd (op);
  return 1;
}

/* 
 * Pretty much identical to current map_info, but on a bigger scale 
 * This function returns the name of the players current region, and
 * a description of it. It is there merely for flavour text.
 */
void
current_region_info (object *op)
{
  if (region *reg = op->region ())
    new_draw_info_format (NDI_UNIQUE, 0, op, "You are %s.\n%s", &reg->longname, &reg->msg);
}

void
current_map_info (object *op)
{
  maptile *m = op->map;

  if (!m)
    return;

  new_draw_info_format (NDI_UNIQUE, 0, op, "%s (%s) %s", &m->name, &m->path, &op->region ()->longname);

  if (QUERY_FLAG (op, FLAG_WIZ))
    new_draw_info_format (NDI_UNIQUE, 0, op,
                          "players:%d difficulty:%d size:%dx%d start:%dx%d timeout %ld",
                          m->players, m->difficulty, m->width, m->height, m->enter_x, m->enter_y, m->timeout);

  if (m->msg)
    new_draw_info (NDI_UNIQUE, NDI_NAVY, op, m->msg);
}

#ifdef DEBUG_MALLOC_LEVEL
int
command_malloc_verify (object *op, char *parms)
{
  extern int malloc_verify (void);

  if (!malloc_verify ())
    new_draw_info (NDI_UNIQUE, 0, op, "Heap is corrupted.");
  else
    new_draw_info (NDI_UNIQUE, 0, op, "Heap checks out OK.");
  return 1;
}
#endif

int
command_whereabouts (object *op, char *params)
{
  //TODO: should obviously not waste space in struct region for this.
  /*
   * reset the counter on the region, then use it to store the number of
   * players there.
   * I don't know how thread-safe this would be, I suspect not very....
   */
  for_all_regions (rgn)
    rgn->counter = 0;

  for_all_players (pl)
    if (pl->ob->map)
      ++pl->ob->region ()->counter;

  /* we only want to print out by places with a 'longname' field... */
  for_all_regions (rgn)
    {
      if (!rgn->longname && rgn->counter > 0)
        {
          if (rgn->parent)
            {
              rgn->parent->counter += rgn->counter;
              rgn->counter = 0;
            }
          else                  /*uh oh, we shouldn't be here. */
            LOG (llevError, "command_whereabouts() Region %s with no longname has no parent", &rgn->name);
        }
    }

  new_draw_info_format (NDI_UNIQUE, 0, op, "In the world currently there are:");

  for_all_regions (rgn)
    if (rgn->counter)
      new_draw_info_format (NDI_UNIQUE, 0, op, "%u players %s", rgn->counter, &rgn->longname);

  return 1;
}

typedef struct
{
  char namebuf[MAX_BUF];
  int login_order;
} chars_names;

int
command_mapinfo (object *op, char *params)
{
  current_map_info (op);
  return 1;
}

int
command_whereami (object *op, char *params)
{
  current_region_info (op);
  return 1;
}

int
command_time (object *op, char *params)
{
  print_tod (op);
  return 1;
}

int
command_weather (object *op, char *params)
{
#if 0
  int wx, wy, temp, sky;
  char buf[MAX_BUF];

  if (settings.dynamiclevel < 1)
    return 1;

  if (op->map == NULL)
    return 1;

  if (worldmap_to_weathermap (op->x, op->y, &wx, &wy, op->map) != 0)
    return 1;

  if (QUERY_FLAG (op, FLAG_WIZ))
    {
      /* dump the weather, Dm style! Yo! */
      new_draw_info_format (NDI_UNIQUE, 0, op, "Real temp: %d", real_world_temperature (op->x, op->y, op->map));
      new_draw_info_format (NDI_UNIQUE, 0, op, "Base temp: %d", weathermap[wx][wy].temp);
      new_draw_info_format (NDI_UNIQUE, 0, op, "Humid: %d", weathermap[wx][wy].humid);
      new_draw_info_format (NDI_UNIQUE, 0, op, "Wind: dir=%d speed=%d", weathermap[wx][wy].winddir, weathermap[wx][wy].windspeed);
      new_draw_info_format (NDI_UNIQUE, 0, op, "Pressure: %d", weathermap[wx][wy].pressure);
      new_draw_info_format (NDI_UNIQUE, 0, op, "Avg Elevation: %d", weathermap[wx][wy].avgelev);
      new_draw_info_format (NDI_UNIQUE, 0, op, "Rainfall: %d  Water: %d", weathermap[wx][wy].rainfall, weathermap[wx][wy].water);
    }

  temp = real_world_temperature (op->x, op->y, op->map);
  new_draw_info_format (NDI_UNIQUE, 0, op, "It's currently %d degrees " "Centigrade out.", temp);

  /* humid */
  if (weathermap[wx][wy].humid < 20)
    new_draw_info (NDI_UNIQUE, 0, op, "It is very dry.");
  else if (weathermap[wx][wy].humid < 40)
    new_draw_info (NDI_UNIQUE, 0, op, "It is very comfortable today.");
  else if (weathermap[wx][wy].humid < 60)
    new_draw_info (NDI_UNIQUE, 0, op, "It is a bit muggy.");
  else if (weathermap[wx][wy].humid < 80)
    new_draw_info (NDI_UNIQUE, 0, op, "It is muggy.");
  else
    new_draw_info (NDI_UNIQUE, 0, op, "It is uncomfortably muggy.");

  /* wind */
  switch (weathermap[wx][wy].winddir)
    {
        case 1:
          sprintf (buf, "north");
          break;
        case 2:
          sprintf (buf, "northeast");
          break;
        case 3:
          sprintf (buf, "east");
          break;
        case 4:
          sprintf (buf, "southeast");
          break;
        case 5:
          sprintf (buf, "south");
          break;
        case 6:
          sprintf (buf, "southwest");
          break;
        case 7:
          sprintf (buf, "west");
          break;
        case 8:
          sprintf (buf, "northwest");
          break;
    }
  if (weathermap[wx][wy].windspeed < 5)
    new_draw_info_format (NDI_UNIQUE, 0, op, "There is a mild breeze " "coming from the %s.", buf);
  else if (weathermap[wx][wy].windspeed < 10)
    new_draw_info_format (NDI_UNIQUE, 0, op, "There is a strong breeze " "coming from the %s.", buf);
  else if (weathermap[wx][wy].windspeed < 15)
    new_draw_info_format (NDI_UNIQUE, 0, op, "There is a light wind " "coming from the %s.", buf);
  else if (weathermap[wx][wy].windspeed < 25)
    new_draw_info_format (NDI_UNIQUE, 0, op, "There is a strong wind " "coming from the %s.", buf);
  else if (weathermap[wx][wy].windspeed < 35)
    new_draw_info_format (NDI_UNIQUE, 0, op, "There is a heavy wind " "coming from the %s.", buf);
  else
    new_draw_info_format (NDI_UNIQUE, 0, op, "The wind from the %s is " "incredibly strong!", buf);

  sky = weathermap[wx][wy].sky;
  if (temp <= 0 && sky > SKY_OVERCAST && sky < SKY_FOG)
    sky += 10;                  /*let it snow */
  switch (sky)
    {
        case SKY_CLEAR:
          new_draw_info (NDI_UNIQUE, 0, op, "There isn''t a cloud in the sky.");
          break;
        case SKY_LIGHTCLOUD:
          new_draw_info (NDI_UNIQUE, 0, op, "There are a few light clouds in the sky.");
          break;
        case SKY_OVERCAST:
          new_draw_info (NDI_UNIQUE, 0, op, "The sky is cloudy and dreary.");
          break;
        case SKY_LIGHT_RAIN:
          new_draw_info (NDI_UNIQUE, 0, op, "It is raining softly.");
          break;
        case SKY_RAIN:
          new_draw_info (NDI_UNIQUE, 0, op, "It is raining.");
          break;
        case SKY_HEAVY_RAIN:
          new_draw_info (NDI_UNIQUE, 0, op, "It is raining heavily.");
          break;
        case SKY_HURRICANE:
          new_draw_info (NDI_UNIQUE, 0, op, "There is a heavy storm!  You should go inside!");
          break;
        case SKY_FOG:
          new_draw_info (NDI_UNIQUE, 0, op, "It''s foggy and miserable.");
          break;
        case SKY_HAIL:
          new_draw_info (NDI_UNIQUE, 0, op, "It''s hailing out!  Take cover!");
          break;
        case SKY_LIGHT_SNOW:
          new_draw_info (NDI_UNIQUE, 0, op, "Snow is gently falling from the sky.");
          break;
        case SKY_SNOW:
          new_draw_info (NDI_UNIQUE, 0, op, "It''s snowing out.");
          break;
        case SKY_HEAVY_SNOW:
          new_draw_info (NDI_UNIQUE, 0, op, "The snow is falling very heavily now.");
          break;
        case SKY_BLIZZARD:
          new_draw_info (NDI_UNIQUE, 0, op, "A full blown blizzard is in effect.  You might want to take cover!");
          break;
    }
#endif
  return 1;
}

int
command_hiscore (object *op, char *params)
{
  display_high_score (op, op == NULL ? 9999 : 50, params);
  return 1;
}

int
command_debug (object *op, char *params)
{
  int i;
  char buf[MAX_BUF];

  if (params == NULL || !sscanf (params, "%d", &i))
    {
      sprintf (buf, "Global debug level is %d.", settings.debug);
      new_draw_info (NDI_UNIQUE, 0, op, buf);
      return 1;
    }
  settings.debug = (enum LogLevel) FABS (i);
  sprintf (buf, "Set debug level to %d.", i);
  new_draw_info (NDI_UNIQUE, 0, op, buf);
  return 1;
}


/*
 * Those dumps should be just one dump with good parser
 */

int
command_dumpbelow (object *op, char *params)
{
  if (op && op->below)
    {
      char *dump = dump_object (op->below);
      new_draw_info (NDI_UNIQUE, 0, op, dump);
      free (dump);
      /* Let's push that item on the dm's stack */
      dm_stack_push (op->contr, op->below->count);
    }
  return 0;
}

int
command_dumpfriendlyobjects (object *op, char *params)
{
  dump_friendly_objects ();
  return 0;
}

int
command_printlos (object *op, char *params)
{
  if (op)
    print_los (op);
  return 0;
}


int
command_version (object *op, char *params)
{
  version (op);
  return 0;
}

#ifndef BUG_LOG
# define BUG_LOG "bug_log"
#endif
void
bug_report (const char *reportstring)
{
  FILE *fp;

  if ((fp = fopen (BUG_LOG, "a")) != NULL)
    {
      fprintf (fp, "%s\n", reportstring);
      fclose (fp);
    }
  else
    {
      LOG (llevError, "Cannot write bugs file %s: %s\n", BUG_LOG, strerror (errno));
    }
}

/* Prints out some useful information for the character.  Everything we print
 * out can be determined by the docs, so we aren't revealing anything extra -
 * rather, we are making it convenient to find the values.  params have
 * no meaning here.
 */
int
command_statistics (object *pl, char *params)
{
  if (!pl->contr)
    return 1;
  new_draw_info_format (NDI_UNIQUE, 0, pl, "  Experience: %" PRId64, pl->stats.exp);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "  Next Level: %" PRId64, level_exp (pl->level + 1, pl->expmul));
  new_draw_info (NDI_UNIQUE, 0, pl, "\nStat       Nat/Real/Max");

  new_draw_info_format (NDI_UNIQUE, 0, pl, "Str         %2d/ %3d/%3d",
                        pl->contr->orig_stats.Str, pl->stats.Str, 20 + pl->arch->clone.stats.Str);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "Dex         %2d/ %3d/%3d",
                        pl->contr->orig_stats.Dex, pl->stats.Dex, 20 + pl->arch->clone.stats.Dex);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "Con         %2d/ %3d/%3d",
                        pl->contr->orig_stats.Con, pl->stats.Con, 20 + pl->arch->clone.stats.Con);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "Int         %2d/ %3d/%3d",
                        pl->contr->orig_stats.Int, pl->stats.Int, 20 + pl->arch->clone.stats.Int);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "Wis         %2d/ %3d/%3d",
                        pl->contr->orig_stats.Wis, pl->stats.Wis, 20 + pl->arch->clone.stats.Wis);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "Pow         %2d/ %3d/%3d",
                        pl->contr->orig_stats.Pow, pl->stats.Pow, 20 + pl->arch->clone.stats.Pow);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "Cha         %2d/ %3d/%3d",
                        pl->contr->orig_stats.Cha, pl->stats.Cha, 20 + pl->arch->clone.stats.Cha);
  new_draw_info_format (NDI_UNIQUE, 0, pl, "\nAttack Mode: %s", pl->contr->peaceful ? "Peaceful" : "Hostile");

  /* Can't think of anything else to print right now */
  return 0;
}

int
command_fix_me (object *op, char *params)
{
  sum_weight (op);
  op->update_stats ();
  new_draw_info (NDI_UNIQUE, 0, op, "Your character was fixed.");

  return 1;
}

int
command_logs (object *op, char *params)
{
  new_draw_info (NDI_UNIQUE, 0, op, "Nobody is currently logging kills.");

  return 1;
}

int
command_bowmode (object *op, char *params)
{
  bowtype_t oldtype = op->contr->bowtype;
  static const char *const types[] = { "normal", "threewide", "spreadshot", "firenorth",
    "firene", "fireeast", "firese", "firesouth",
    "firesw", "firewest", "firenw", "bestarrow"
  };
  char buf[MAX_BUF];
  int i, found;

  if (!params)
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "bowmode is set to %s", types[op->contr->bowtype]);
      return 1;
    }

  for (i = 0, found = 0; i <= bow_bestarrow; i++)
    {
      if (!strcmp (params, types[i]))
        {
          found++;
          op->contr->bowtype = (bowtype_t) i;
          break;
        }
    }

  if (!found)
    {
      sprintf (buf, "bowmode: Unknown options %s, valid options are:", params);
      for (i = 0; i <= bow_bestarrow; i++)
        {
          strcat (buf, " ");
          strcat (buf, types[i]);
          if (i < bow_nw)
            strcat (buf, ",");
          else
            strcat (buf, ".");
        }
      new_draw_info_format (NDI_UNIQUE, 0, op, buf);
      return 0;
    }

  new_draw_info_format (NDI_UNIQUE, 0, op, "bowmode %s set to %s", (oldtype == op->contr->bowtype ? "" : "now"), types[op->contr->bowtype]);
  return 1;
}

int
command_showpets (object *op, char *params)
{
  objectlink *obl, *next;
  int counter = 0, target = 0;
  int have_shown_pet = 0;

  if (params != NULL)
    target = atoi (params);
  for (obl = first_friendly_object; obl != NULL; obl = next)
    {
      object *ob = obl->ob;

      next = obl->next;
      if (ob->owner == op)
        {
          if (target == 0)
            {
              if (counter == 0)
                new_draw_info (NDI_UNIQUE, 0, op, "Pets:");
              new_draw_info_format (NDI_UNIQUE, 0, op, "%d  %s - level %d", ++counter, &ob->name, ob->level);
            }
          else if (!have_shown_pet && ++counter == target)
            {
              new_draw_info_format (NDI_UNIQUE, 0, op, "level %d %s", ob->level, &ob->name);
              new_draw_info_format (NDI_UNIQUE, 0, op, "%d/%d HP, %d/%d SP", ob->stats.hp, ob->stats.maxhp, ob->stats.sp, ob->stats.maxsp);
              /* this is not a nice way to do this, it should be made to be more like the statistics command */
              new_draw_info_format (NDI_UNIQUE, 0, op, "Str %d", ob->stats.Str);
              new_draw_info_format (NDI_UNIQUE, 0, op, "Dex %d", ob->stats.Dex);
              new_draw_info_format (NDI_UNIQUE, 0, op, "Con %d", ob->stats.Con);
              new_draw_info_format (NDI_UNIQUE, 0, op, "Int %d", ob->stats.Int);
              new_draw_info_format (NDI_UNIQUE, 0, op, "Wis %d", ob->stats.Wis);
              new_draw_info_format (NDI_UNIQUE, 0, op, "Cha %d", ob->stats.Cha);
              new_draw_info_format (NDI_UNIQUE, 0, op, "Pow %d", ob->stats.Pow);
              new_draw_info_format (NDI_UNIQUE, 0, op, "wc %d  damage %d ac %d ", ob->stats.wc, ob->stats.dam, ob->stats.ac);
              have_shown_pet = 1;
            }
        }
    }
  if (counter == 0)
    new_draw_info (NDI_UNIQUE, 0, op, "you have no pets.");
  else if (target != 0 && have_shown_pet == 0)
    new_draw_info (NDI_UNIQUE, 0, op, "no such pet.");
  return 0;
}

int
command_resistances (object *op, char *params)
{
  int i;

  if (!op)
    return 0;

  for (i = 0; i < NROFATTACKS; i++)
    {
      if (i == ATNR_INTERNAL)
        continue;

      new_draw_info_format (NDI_UNIQUE, 0, op, "%-20s %+5d", attacktype_desc[i], op->resist[i]);
    }

  /* If dragon player, let's display natural resistances */
  if (is_dragon_pl (op))
    {
      int attack;
      object *tmp;

      for (tmp = op->inv; tmp != NULL; tmp = tmp->below)
        {
          if ((tmp->type == FORCE) && (strcmp (tmp->arch->name, "dragon_skin_force") == 0))
            {
              new_draw_info (NDI_UNIQUE, 0, op, "\nNatural skin resistances:");
              for (attack = 0; attack < NROFATTACKS; attack++)
                {
                  if (atnr_is_dragon_enabled (attack))
                    {
                      new_draw_info_format (NDI_UNIQUE, 0, op, "%s: %d", change_resist_msg[attack], tmp->resist[attack]);
                    }
                }
              break;
            }
        }
    }

  return 0;
}

/*
 * Actual commands.
 * Those should be in small separate files (c_object.c, c_wiz.c, cmove.c,...)
 */


static void
help_topics (object *op, int what)
{
  DIR *dirp;
  struct dirent *de;
  char filename[MAX_BUF], line[80];
  int namelen, linelen = 0;

  switch (what)
    {
      case 1:
        sprintf (filename, "%s/wizhelp", settings.datadir);
        new_draw_info (NDI_UNIQUE, 0, op, "      Wiz commands:");
        break;
      case 3:
        sprintf (filename, "%s/mischelp", settings.datadir);
        new_draw_info (NDI_UNIQUE, 0, op, "      Misc help:");
        break;
      default:
        sprintf (filename, "%s/help", settings.datadir);
        new_draw_info (NDI_UNIQUE, 0, op, "      Commands:");
        break;
    }

  if (!(dirp = opendir (filename)))
    return;

  line[0] = '\0';
  while ((de = readdir (dirp)))
    {
      namelen = strlen (de->d_name);
      if (namelen <= 2 && *de->d_name == '.' && (namelen == 1 || de->d_name[1] == '.'))
        continue;
      linelen += namelen + 1;
      if (linelen > 42)
        {
          new_draw_info (NDI_UNIQUE, 0, op, line);
          sprintf (line, " %s", de->d_name);
          linelen = namelen + 1;
          continue;
        }
      strcat (line, " ");
      strcat (line, de->d_name);
    }
  new_draw_info (NDI_UNIQUE, 0, op, line);
  closedir (dirp);
}

static void
show_commands (object *op, int what)
{
  char line[80];
  int i, size, namelen, linelen = 0;
  CommArray_s *ap;
  extern CommArray_s Commands[], WizCommands[];
  extern const int CommandsSize, WizCommandsSize;

  switch (what)
    {
        case 1:
          ap = WizCommands;
          size = WizCommandsSize;
          new_draw_info (NDI_UNIQUE, 0, op, "      Wiz commands:");
          break;
        case 2:
          ap = CommunicationCommands;
          size = CommunicationCommandSize;
          new_draw_info (NDI_UNIQUE, 0, op, "      Communication commands:");
          break;
        default:
          ap = Commands;
          size = CommandsSize;
          new_draw_info (NDI_UNIQUE, 0, op, "      Commands:");
          break;
    }

  line[0] = '\0';
  for (i = 0; i < size; i++)
    {
      namelen = strlen (ap[i].name);
      linelen += namelen + 1;
      if (linelen > 42)
        {
          new_draw_info (NDI_UNIQUE, 0, op, line);
          sprintf (line, " %s", ap[i].name);
          linelen = namelen + 1;
          continue;
        }
      strcat (line, " ");
      strcat (line, ap[i].name);
    }
  new_draw_info (NDI_UNIQUE, 0, op, line);
}


int
command_help (object *op, char *params)
{
  struct stat st;
  FILE *fp;
  char filename[MAX_BUF], line[MAX_BUF];
  int len;

  if (op != NULL)
    clear_win_info (op);

/*
   * Main help page?
 */
  if (!params)
    {
      sprintf (filename, "%s/def_help", settings.datadir);
      if ((fp = fopen (filename, "r")) == NULL)
        {
          LOG (llevError, "Cannot open help file %s: %s\n", filename, strerror (errno));
          return 0;
        }
      while (fgets (line, MAX_BUF, fp))
        {
          line[MAX_BUF - 1] = '\0';
          len = strlen (line) - 1;
          if (line[len] == '\n')
            line[len] = '\0';
          new_draw_info (NDI_UNIQUE, 0, op, line);
        }
      fclose (fp);
      return 0;
    }

  /*
   * Topics list
   */
  if (!strcmp (params, "topics"))
    {
      help_topics (op, 3);
      help_topics (op, 0);
      if (QUERY_FLAG (op, FLAG_WIZ))
        help_topics (op, 1);
      return 0;
    }

  /*
   * Commands list
   */
  if (!strcmp (params, "commands"))
    {
      show_commands (op, 0);
      show_commands (op, 2);    /* show comm commands */
      if (QUERY_FLAG (op, FLAG_WIZ))
        show_commands (op, 1);
      return 0;
    }

  /*
   * User wants info about command
   */
  if (strchr (params, '.') || strchr (params, ' ') || strchr (params, '/'))
    {
      sprintf (line, "Illegal characters in '%s'", params);
      new_draw_info (NDI_UNIQUE, 0, op, line);
      return 0;
    }

  sprintf (filename, "%s/mischelp/%s", settings.datadir, params);
  if (stat (filename, &st) || !S_ISREG (st.st_mode))
    {
      if (op)
        {
          sprintf (filename, "%s/help/%s", settings.datadir, params);
          if (stat (filename, &st) || !S_ISREG (st.st_mode))
            {
              if (QUERY_FLAG (op, FLAG_WIZ))
                {
                  sprintf (filename, "%s/wizhelp/%s", settings.datadir, params);
                  if (stat (filename, &st) || !S_ISREG (st.st_mode))
                    goto nohelp;
                }
              else
                goto nohelp;
            }
        }
    }

  /*
   * Found that. Just cat it to screen.
   */
  if ((fp = fopen (filename, "r")) == NULL)
    {
      LOG (llevError, "Cannot open help file %s: %s\n", filename, strerror (errno));
      return 0;
    }
  sprintf (line, "Help about '%s'", params);
  new_draw_info (NDI_UNIQUE, 0, op, line);
  while (fgets (line, MAX_BUF, fp))
    {
      line[MAX_BUF - 1] = '\0';
      len = strlen (line) - 1;
      if (line[len] == '\n')
        line[len] = '\0';
      new_draw_info (NDI_UNIQUE, 0, op, line);
    }
  fclose (fp);
  return 0;

  /*
   * No_help -escape
   */
nohelp:
  sprintf (line, "No help available on '%s'", params);
  new_draw_info (NDI_UNIQUE, 0, op, line);
  return 0;
}


int
onoff_value (const char *line)
{
  int i;

  if (sscanf (line, "%d", &i))
    return (i != 0);
  switch (line[0])
    {
        case 'o':
          switch (line[1])
            {
                case 'n':
                  return 1;     /* on */
                default:
                  return 0;     /* o[ff] */
            }
        case 'y':              /* y[es] */
        case 'k':              /* k[ylla] */
        case 's':
        case 'd':
          return 1;
        case 'n':              /* n[o] */
        case 'e':              /* e[i] */
        case 'u':
        default:
          return 0;
    }
}

int
command_title (object *op, char *params)
{
  char buf[MAX_BUF];

  if (settings.set_title == FALSE)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You cannot change your title.");
      return 1;
    }

  /* dragon players cannot change titles */
  if (is_dragon_pl (op))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Dragons cannot change titles.");
      return 1;
    }

  if (params == NULL)
    {
      if (op->contr->own_title[0] == '\0')
        sprintf (buf, "Your title is '%s'.", op->contr->title);
      else
        sprintf (buf, "Your title is '%s'.", op->contr->own_title);
      new_draw_info (NDI_UNIQUE, 0, op, buf);
      return 1;
    }
  if (strcmp (params, "clear") == 0 || strcmp (params, "default") == 0)
    {
      if (op->contr->own_title[0] == '\0')
        new_draw_info (NDI_UNIQUE, 0, op, "Your title is the default title.");
      else
        new_draw_info (NDI_UNIQUE, 0, op, "Title set to default.");
      op->contr->own_title[0] = '\0';
      return 1;
    }

  if ((int) strlen (params) >= MAX_NAME)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Title too long.");
      return 1;
    }
  strcpy (op->contr->own_title, params);
  return 1;
}

int
command_kill_pets (object *op, char *params)
{
  objectlink *obl, *next;
  int counter = 0, removecount = 0;

  if (params == NULL)
    {
      terminate_all_pets (op);
      new_draw_info (NDI_UNIQUE, 0, op, "Your pets have been killed.");
    }
  else
    {
      int target = atoi (params);

      for (obl = first_friendly_object; obl != NULL; obl = next)
        {
          object *ob = obl->ob;

          next = obl->next;
          if (ob->owner == op)
            if (++counter == target || (target == 0 && !strcasecmp (ob->name, params)))
              {
                ob->destroy ();
                removecount++;
              }
        }
      if (removecount != 0)
        new_draw_info_format (NDI_UNIQUE, 0, op, "killed %d pets.\n", removecount);
      else
        new_draw_info (NDI_UNIQUE, 0, op, "Couldn't find any suitable pets to kill.\n");
    }
  return 0;
}