/***************************************************************************
 *  File: string.c                                                         *
 *                                                                         *
 *  Much time and thought has gone into this software and you are          *
 *  benefitting.  We hope that you share your changes too.  What goes      *
 *  around, comes around.                                                  *
 *                                                                         *
 *  This code was freely distributed with the The Isles 1.1 source code,   *
 *  and has been used here for OLC - OLC would not be what it is without   *
 *  all the previous coders who released their source code.                *
 *                                                                         *
 ***************************************************************************/


#if defined(macintosh)
#include <types.h>
#else
#include <sys/types.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "merc.h"
#include "tables.h"
#include "olc.h"

char *string_linedel (char *, int);
char *string_lineadd (char *, char *, int);
char *numlineas (char *);

/*****************************************************************************
 Name:		string_edit
 Purpose:	Clears string and puts player into editing mode.
 Called by:	none
 ****************************************************************************/
void
string_edit (CHAR_DATA * ch, char **pString)
{
  send_to_char ("-========- Entering EDIT Mode -=========-\n\r", ch);
  send_to_char ("    Type .h on a new line for help\n\r", ch);
  send_to_char (" Terminate with a ~ or @ on a blank line.\n\r", ch);
  send_to_char ("-=======================================-\n\r", ch);

  if (*pString == NULL)
    {
      *pString = str_dup ("");
    }
  else
    {
      **pString = '\0';
    }

  ch->desc->pString = pString;

  return;
}



/*****************************************************************************
 Name:		string_append
 Purpose:	Puts player into append mode for given string.
 Called by:	(many)olc_act.c
 ****************************************************************************/
void
string_append (CHAR_DATA * ch, char **pString)
{
  send_to_char ("-=======- Entering APPEND Mode -========-\n\r", ch);
  send_to_char ("    Type .h on a new line for help\n\r", ch);
  send_to_char (" Terminate with a ~ or @ on a blank line.\n\r", ch);
  send_to_char ("-=======================================-\n\r", ch);

  if (*pString == NULL)
    {
      *pString = str_dup ("");
    }
  send_to_char (numlineas (*pString), ch);

/* numlineas entrega el string con \n\r */
/*  if ( *(*pString + strlen( *pString ) - 1) != '\r' )
	send_to_char( "\n\r", ch ); */

  ch->desc->pString = pString;

  return;
}



/***************************************************************************
 *  Name:          string_replace
 *  Purpose:       Substitutes one string for another.
 *  Called by:     string_add(string.c) (aedit_builder)olc_act.c.
 *  Notes:         modified by Calath (gblues@jps.net) to prevent buffer
 *                 overruns
 * ****************************************************************************/


char *
string_replace (char *orig, char *old, char *new)
{
  char buf[MAX_STRING_LENGTH];
  char *ptr = strstr (orig, old);
  int a, b;

  if ((ptr == NULL
       || (a = ptr - orig) + strlen (new) >= (MAX_STRING_LENGTH - 4)))
    {
      return orig;
    }
  b = MAX_STRING_LENGTH - 4 - a - strlen (new);
  strncpy (buf, orig, MAX_STRING_LENGTH);
  strncpy (buf + a, new, strlen (new));
  strncpy (buf + a + strlen (new), ptr + strlen (old), b);
  buf[MAX_STRING_LENGTH - 4] = '\0';

  free_string (orig);
  return str_dup (buf);
}

/*****************************************************************************
 Name:		string_add
 Purpose:	Interpreter for string editing.
 Called by:	game_loop_xxxx(comm.c).
 ****************************************************************************/
void
string_add (CHAR_DATA * ch, char *argument)
{
  char buf[MAX_STRING_LENGTH];

  /*
   * Thanks to James Seng
   */
  smash_tilde (argument);

  if (*argument == '.')
    {
      char arg1[MAX_INPUT_LENGTH];
      char arg2[MAX_INPUT_LENGTH];
      char arg3[MAX_INPUT_LENGTH];
      char tmparg3[MAX_INPUT_LENGTH];

      argument = one_argument (argument, arg1);
      argument = first_arg (argument, arg2, FALSE);
      strcpy (tmparg3, argument);
      argument = first_arg (argument, arg3, FALSE);

      if (!str_cmp (arg1, ".c"))
	{
	  send_to_char ("String cleared.\n\r", ch);
	  free_string (*ch->desc->pString);
	  *ch->desc->pString = str_dup ("");
	  return;
	}

      if (!str_cmp (arg1, ".s"))
	{
	  send_to_char ("String so far:\n\r", ch);
	  send_to_char (numlineas (*ch->desc->pString), ch);
	  return;
	}

      if (!str_cmp (arg1, ".r"))
	{
	  if (arg2[0] == '\0')
	    {
	      send_to_char ("usage:  .r \"old string\" \"new string\"\n\r",
			    ch);
	      return;
	    }

	  *ch->desc->pString =
	    string_replace (*ch->desc->pString, arg2, arg3);
	  sprintf (buf, "'%s' replaced with '%s'.\n\r", arg2, arg3);
	  send_to_char (buf, ch);
	  return;
	}

      if (!str_cmp (arg1, ".f"))
	{
	  *ch->desc->pString = format_string (*ch->desc->pString);
	  send_to_char ("String formatted.\n\r", ch);
	  return;
	}

      if (!str_cmp (arg1, ".ld"))
	{
	  *ch->desc->pString =
	    string_linedel (*ch->desc->pString, atoi (arg2));
	  send_to_char ("Linea borrada.\n\r", ch);
	  return;
	}

      if (!str_cmp (arg1, ".li"))
	{
	  *ch->desc->pString =
	    string_lineadd (*ch->desc->pString, tmparg3, atoi (arg2));
	  send_to_char ("Linea insertada.\n\r", ch);
	  return;
	}

      if (!str_cmp (arg1, ".lr"))
	{
	  *ch->desc->pString =
	    string_linedel (*ch->desc->pString, atoi (arg2));
	  *ch->desc->pString =
	    string_lineadd (*ch->desc->pString, tmparg3, atoi (arg2));
	  send_to_char ("Linea reemplazada.\n\r", ch);
	  return;
	}

      if (!str_cmp (arg1, ".h"))
	{
	  send_to_char ("Sedit help (commands on blank line):   \n\r", ch);
	  send_to_char (".r 'old' 'new'   - replace a substring \n\r", ch);
	  send_to_char ("                   (requires '', \"\") \n\r", ch);
	  send_to_char (".h               - get help (this info)\n\r", ch);
	  send_to_char (".s               - show string so far  \n\r", ch);
	  send_to_char (".f               - (word wrap) string  \n\r", ch);
	  send_to_char (".c               - clear string so far \n\r", ch);
	  send_to_char (".ld <num>        - borra linea numero <num>\n\r",
			ch);
	  send_to_char (".li <num> <str>  - anade <str> en linea <num>\n\r",
			ch);
	  send_to_char
	    (".lr <num> <str>  - reemplaza linea <num> por <str>\n\r", ch);
	  send_to_char ("@                - end string          \n\r", ch);
	  return;
	}

      send_to_char ("SEdit:  Invalid dot command.\n\r", ch);
      return;
    }

  if (*argument == '~' || *argument == '@')
    {
      if (ch->desc->editor == ED_MPCODE)
	{			/* para los mobprogs */
	  MOB_INDEX_DATA *mob;
	  int hash;
	  PROG_LIST *mpl;
	  PROG_CODE *mpc;

	  EDIT_MPCODE (ch, mpc);

	  if (mpc != NULL)
	    for (hash = 0; hash < MAX_KEY_HASH; hash++)
	      for (mob = mob_index_hash[hash]; mob; mob = mob->next)
		for (mpl = mob->mprogs; mpl; mpl = mpl->next)
		  if (mpl->vnum == mpc->vnum)
		    {
		      sprintf (buf, "Arreglando mob %ld.\n\r", mob->vnum);
		      send_to_char (buf, ch);
		      mpl->code = mpc->code;
		    }
	}
      if (ch->desc->editor == ED_OPCODE)	/* for the objprogs */
	{
	  OBJ_INDEX_DATA *obj;
	  int hash;
	  PROG_LIST *opl;
	  PROG_CODE *opc;

	  EDIT_OPCODE (ch, opc);

	  if (opc != NULL)
	    for (hash = 0; hash < MAX_KEY_HASH; hash++)
	      for (obj = obj_index_hash[hash]; obj; obj = obj->next)
		for (opl = obj->oprogs; opl; opl = opl->next)
		  if (opl->vnum == opc->vnum)
		    {
		      sprintf (buf, "Fixing object %ld.\n\r", obj->vnum);
		      send_to_char (buf, ch);
		      opl->code = opc->code;
		    }
	}

      if (ch->desc->editor == ED_RPCODE)	/* for the roomprogs */
	{
	  ROOM_INDEX_DATA *room;
	  int hash;
	  PROG_LIST *rpl;
	  PROG_CODE *rpc;

	  EDIT_RPCODE (ch, rpc);

	  if (rpc != NULL)
	    for (hash = 0; hash < MAX_KEY_HASH; hash++)
	      for (room = room_index_hash[hash]; room; room = room->next)
		for (rpl = room->rprogs; rpl; rpl = rpl->next)
		  if (rpl->vnum == rpc->vnum)
		    {
		      sprintf (buf, "Fixing room %ld.\n\r", room->vnum);
		      send_to_char (buf, ch);
		      rpl->code = rpc->code;
		    }
	}


      ch->desc->pString = NULL;
      return;
    }

  strcpy (buf, *ch->desc->pString);

  /*
   * Truncate strings to MAX_STRING_LENGTH.
   * --------------------------------------
   */
  if (strlen (buf) + strlen (argument) >= (MAX_STRING_LENGTH - 4))
    {
      send_to_char ("String too long, last line skipped.\n\r", ch);

      /* Force character out of editing mode. */
      ch->desc->pString = NULL;
      return;
    }

  /*
   * Ensure no tilde's inside string.
   * --------------------------------
   */
  smash_tilde (argument);

  strcat (buf, argument);
  strcat (buf, "\n\r");
  free_string (*ch->desc->pString);
  *ch->desc->pString = str_dup (buf);
  return;
}



/*
 * Thanks to Kalgen for the new procedure (no more bug!)
 * Original wordwrap() written by Surreality.
 */
/*****************************************************************************
 Name:		format_string
 Purpose:	Special string formating and word-wrapping.
 Called by:	string_add(string.c) (many)olc_act.c
 ****************************************************************************/
char *
format_string (char *oldstring /*, bool fSpace */ )
{
  char xbuf[MAX_STRING_LENGTH];
  char xbuf2[MAX_STRING_LENGTH];
  char *rdesc;
  int i = 0;
  bool cap = TRUE;

  xbuf[0] = xbuf2[0] = 0;

  i = 0;

  for (rdesc = oldstring; *rdesc; rdesc++)
    {
      if (*rdesc == '\n')
	{
	  if (xbuf[i - 1] != ' ')
	    {
	      xbuf[i] = ' ';
	      i++;
	    }
	}
      else if (*rdesc == '\r');
      else if (*rdesc == ' ')
	{
	  if (xbuf[i - 1] != ' ')
	    {
	      xbuf[i] = ' ';
	      i++;
	    }
	}
      else if (*rdesc == ')')
	{
	  if (xbuf[i - 1] == ' ' && xbuf[i - 2] == ' ' &&
	      (xbuf[i - 3] == '.' || xbuf[i - 3] == '?'
	       || xbuf[i - 3] == '!'))
	    {
	      xbuf[i - 2] = *rdesc;
	      xbuf[i - 1] = ' ';
	      xbuf[i] = ' ';
	      i++;
	    }
	  else
	    {
	      xbuf[i] = *rdesc;
	      i++;
	    }
	}
      else if (*rdesc == '.' || *rdesc == '?' || *rdesc == '!')
	{
	  if (xbuf[i - 1] == ' ' && xbuf[i - 2] == ' ' &&
	      (xbuf[i - 3] == '.' || xbuf[i - 3] == '?'
	       || xbuf[i - 3] == '!'))
	    {
	      xbuf[i - 2] = *rdesc;
	      if (*(rdesc + 1) != '\"')
		{
		  xbuf[i - 1] = ' ';
		  xbuf[i] = ' ';
		  i++;
		}
	      else
		{
		  xbuf[i - 1] = '\"';
		  xbuf[i] = ' ';
		  xbuf[i + 1] = ' ';
		  i += 2;
		  rdesc++;
		}
	    }
	  else
	    {
	      xbuf[i] = *rdesc;
	      if (*(rdesc + 1) != '\"')
		{
		  xbuf[i + 1] = ' ';
		  xbuf[i + 2] = ' ';
		  i += 3;
		}
	      else
		{
		  xbuf[i + 1] = '\"';
		  xbuf[i + 2] = ' ';
		  xbuf[i + 3] = ' ';
		  i += 4;
		  rdesc++;
		}
	    }
	  cap = TRUE;
	}
      else
	{
	  xbuf[i] = *rdesc;
	  if (cap)
	    {
	      cap = FALSE;
	      xbuf[i] = UPPER (xbuf[i]);
	    }
	  i++;
	}
    }
  xbuf[i] = 0;
  strcpy (xbuf2, xbuf);

  rdesc = xbuf2;

  xbuf[0] = 0;

  for (;;)
    {
      for (i = 0; i < 77; i++)
	{
	  if (!*(rdesc + i))
	    break;
	}
      if (i < 77)
	{
	  break;
	}
      for (i = (xbuf[0] ? 76 : 73); i; i--)
	{
	  if (*(rdesc + i) == ' ')
	    break;
	}
      if (i)
	{
	  *(rdesc + i) = 0;
	  strcat (xbuf, rdesc);
	  strcat (xbuf, "\n\r");
	  rdesc += i + 1;
	  while (*rdesc == ' ')
	    rdesc++;
	}
      else
	{
	  bug ("No spaces", 0);
	  *(rdesc + 75) = 0;
	  strcat (xbuf, rdesc);
	  strcat (xbuf, "-\n\r");
	  rdesc += 76;
	}
    }
  while (*(rdesc + i) && (*(rdesc + i) == ' ' ||
			  *(rdesc + i) == '\n' || *(rdesc + i) == '\r'))
    i--;
  *(rdesc + i + 1) = 0;
  strcat (xbuf, rdesc);
  if (xbuf[strlen (xbuf) - 2] != '\n')
    strcat (xbuf, "\n\r");

  free_string (oldstring);
  return (str_dup (xbuf));
}



/*
 * Used above in string_add.  Because this function does not
 * modify case if fCase is FALSE and because it understands
 * parenthesis, it would probably make a nice replacement
 * for one_argument.
 */
/*****************************************************************************
 Name:		first_arg
 Purpose:	Pick off one argument from a string and return the rest.
 		Understands quates, parenthesis (barring ) ('s) and
 		percentages.
 Called by:	string_add(string.c)
 ****************************************************************************/
char *
first_arg (char *argument, char *arg_first, bool fCase)
{
  char cEnd;

  while (*argument == ' ')
    argument++;

  cEnd = ' ';
  if (*argument == '\'' || *argument == '"'
      || *argument == '%' || *argument == '(')
    {
      if (*argument == '(')
	{
	  cEnd = ')';
	  argument++;
	}
      else
	cEnd = *argument++;
    }

  while (*argument != '\0')
    {
      if (*argument == cEnd)
	{
	  argument++;
	  break;
	}
      if (fCase)
	*arg_first = LOWER (*argument);
      else
	*arg_first = *argument;
      arg_first++;
      argument++;
    }
  *arg_first = '\0';

  while (*argument == ' ')
    argument++;

  return argument;
}




/*
 * Used in olc_act.c for aedit_builders.
 */
char *
string_unpad (char *argument)
{
  char buf[MAX_STRING_LENGTH];
  char *s;

  s = argument;

  while (*s == ' ')
    s++;

  strcpy (buf, s);
  s = buf;

  if (*s != '\0')
    {
      while (*s != '\0')
	s++;
      s--;

      while (*s == ' ')
	s--;
      s++;
      *s = '\0';
    }

  free_string (argument);
  return str_dup (buf);
}



/*
 * Same as capitalize but changes the pointer's data.
 * Used in olc_act.c in aedit_builder.
 */
char *
string_proper (char *argument)
{
  char *s;

  s = argument;

  while (*s != '\0')
    {
      if (*s != ' ')
	{
	  *s = UPPER (*s);
	  while (*s != ' ' && *s != '\0')
	    s++;
	}
      else
	{
	  s++;
	}
    }

  return argument;
}

/* Technically doesn't need fixing, but this is a little more efficient I think.
 * Plus it doesn't use evil strcpy or strcat!
 * Modified by Calath (gblues@jps.net) to prevent buffer
 * overruns.
 */
char *
string_linedel (char *string, int line)
{
  char *lineend, *linestart = string;
  char buf[MAX_STRING_LENGTH];
  int bytes = 0, cnt = 1, done = FALSE;
  if (strlen (string) >= MAX_STRING_LENGTH - 4)
    return string;
  do
    {
      int len;
      if ((lineend = strstr (linestart, "\n\r")) == NULL)
	done = TRUE;
      len = lineend ? (lineend + 2) - linestart : strlen (linestart);
      if (cnt != line)
	strncpy (buf + bytes, linestart, len);
      linestart = lineend ? lineend + 2 : linestart;
      cnt++;
    }
  while (!done);
  buf[bytes] = '\0';
  free_string (string);
  return str_dup (buf);
}


/*
 * Similar to above. Again, avoids evil strcat and strcpy.
 * Modified by Calath (gblues@jps.net) to prevent buffer
 * overruns.
 */

char *
string_lineadd (char *string, char *newstr, int line)
{
  char *lineend, *linestart = string;
  char buf[MAX_STRING_LENGTH];
  char newline[MAX_INPUT_LENGTH];
  int bytes = 0, cnt = 1, done = FALSE;
  int len;
  sprintf (newline, "%s\n\r", newstr);
  newstr = newline;
  if (strlen (string) + strlen (newstr) >= MAX_STRING_LENGTH - 4)
    return string;
  do
    {
      if (cnt == line)
	{
	  strncpy (buf + bytes, newstr, strlen (newstr));
	  bytes += strlen (newstr);
	  cnt++;
	  continue;
	}
      if ((lineend = strstr (linestart, "\n\r")) == NULL)
	done = TRUE;
      len = lineend ? (lineend + 2) - linestart : strlen (linestart);
      strncpy (buf + bytes, linestart, len);
      bytes += len;
      linestart = lineend ? lineend + 2 : linestart;
      cnt++;
    }
  while (!done);
  buf[bytes] = '\0';
  free_string (string);
  return str_dup (buf);
}


/* buf queda con la linea sin \n\r */
char *
getline (char *str, char *buf)
{
  int tmp = 0;
  bool found = FALSE;

  while (*str)
    {
      if (*str == '\n')
	{
	  found = TRUE;
	  break;
	}

      buf[tmp++] = *(str++);
    }

  if (found)
    {
      if (*(str + 1) == '\r')
	str += 2;
      else
	str += 1;
    }				/* para que quedemos en el inicio de la prox linea */

  buf[tmp] = '\0';

  return str;
}

char *
numlineas (char *string)
{
  int cnt = 1;
  static char buf[MAX_STRING_LENGTH * 2];
  char buf2[MAX_STRING_LENGTH], tmpb[MAX_STRING_LENGTH];

  buf[0] = '\0';

  while (*string)
    {
      string = getline (string, tmpb);
      sprintf (buf2, "%2d. %s\n\r", cnt++, tmpb);
      strcat (buf, buf2);
    }

  return buf;
}