/***************************************************************************
 *  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.                *
 *                                                                         *
 ***************************************************************************/

#include "merc.h"
#include "tables.h"
#include "interp.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 /s 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;
}



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 /s 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);

    ch->desc->pString = pString;

    return;
}



/*****************************************************************************
 Purpose:	Substitutes one string for another.
 ****************************************************************************/
char * string_replace( char * orig, char *sOld, char *sNew )
{
    char xbuf[MAX_STRING_LENGTH];
    int i;

    xbuf[0] = '\0';
    strcpy( xbuf, orig );
    if ( strstr( orig, sOld ) != NULL )
    {
        i = strlen( orig ) - strlen( strstr( orig, sOld ) );
        xbuf[i] = '\0';
        strcat( xbuf, sNew );
        strcat( xbuf, &orig[i+strlen( sOld )] );
        free_string( orig );
    }

    return str_dup( xbuf );
}

#define PARSE_REPLACE		0
#define PARSE_HELP		1
#define PARSE_DELETE		2
#define PARSE_INSERT		3
#define PARSE_EDIT		4
#define PARSE_LIST_NORM		5
#define PARSE_LIST_NUM		6

void parse_action(int command, char *string, CHAR_DATA *ch)
{
    char arg1[MAX_INPUT_LENGTH], arg2[MAX_INPUT_LENGTH];

    switch (command) {
	case PARSE_HELP:
		send_to_char("Edit 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("/l               - show string so far\n\r", ch);
		send_to_char("/n               - show numbered 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("/d#              - delete line number <num>\n\r", ch);
		send_to_char("/i# <str>        - insert <str> on line <num>\n\r", ch);
		send_to_char("/e# <str>        - replace line <num> with <str>\n\r", ch);
		send_to_char("/s               - end string\n\r", ch);
		break;
	case PARSE_EDIT:
		string = one_argument(string, arg1);
		if (arg1[0] == '\0') {
			send_to_char("You must specify a line number.\n\r", ch);
			return;
		}
		*ch->desc->pString = string_linedel(*ch->desc->pString, atoi(arg1));
		*ch->desc->pString = string_lineadd(*ch->desc->pString, string, atoi(arg1));
		send_to_char("Line replaced.\n\r", ch);
		break;
	case PARSE_DELETE:
		*ch->desc->pString = string_linedel(*ch->desc->pString, atoi(string));
		send_to_char("Line deleted.\n\r", ch);
		break;
	case PARSE_REPLACE:
		string = first_arg(string, arg1, FALSE);
		string = first_arg(string, arg2, FALSE);
		if (arg1[0] == '\0') {
			send_to_char("Usage: /r 'old string' 'new string'\n\r", ch);
			return;
		}
		*ch->desc->pString = string_replace(*ch->desc->pString, arg1, arg2);
		ch->Send("'%s' replaced with '%s'.\n\r", arg1, arg2);
		break;
	case PARSE_INSERT:
		string = first_arg(string, arg1, FALSE);
		*ch->desc->pString = string_lineadd(*ch->desc->pString, string, atoi(arg1));
		send_to_char("Line inserted.\n\r", ch);
		break;
	case PARSE_LIST_NORM:
		send_to_char("String so far:\n\r", ch);
		send_to_char(*ch->desc->pString, ch);
		break;
	case PARSE_LIST_NUM:
		send_to_char("String so far:\n\r", ch);
		send_to_char(numlineas(*ch->desc->pString), ch);
		break;
	default:
		send_to_char("Invalid command.\n\r", ch);
		mudlogf(BRF, LVL_CODER, TRUE, "SYSERR: invalid command passed to parse_action");
		break;
    }
}

void string_add( CHAR_DATA *ch, char *str )
{
    int		i = 2, j = 0, action = 0;
    char	buf[MAX_STRING_LENGTH],
		actions[MAX_INPUT_LENGTH];
    bool	terminate = FALSE;

    smash_tilde( str );

    if ((action = (*str == '/'))) {
	while (str[i] != '\0') {
	    actions[j] = str[i];
	    i++; j++;
	}
	actions[j] = '\0';
	*str = '\0';
	switch (str[1]) {
	case 's':
		terminate = TRUE;
		*str = '\0';
		break;
	case 'c':
		send_to_char("String cleared.\n\r", ch);
		free_string(*ch->desc->pString);
		*ch->desc->pString = str_dup("");
		return;
	case 'l':
		parse_action(PARSE_LIST_NORM, actions, ch);
		return;
	case 'n':
		parse_action(PARSE_LIST_NUM, actions, ch);
		return;
	case 'r':
		parse_action(PARSE_REPLACE, actions, ch);
		return;
	case 'f':
		*ch->desc->pString = format_string(*ch->desc->pString);
		send_to_char("String formatted.\n\r", ch);
		return;
	case 'd':
		parse_action(PARSE_DELETE, actions, ch);
		return;
	case 'i':
		parse_action(PARSE_INSERT, actions, ch);
		return;
	case 'e':
		parse_action(PARSE_EDIT, actions, ch);
		return;
	case 'h':
		parse_action(PARSE_HELP, actions, ch);
		return;
	default:
		send_to_char("Invalid command.\n\r", ch);
		return;
	}
    }

    if (terminate)
    {
	if (ch->desc->editor == ED_MPCODE)
	{
		MOB_INDEX_DATA *mob;
		int hash;
		MPROG_LIST *mpl;
		MPROG_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, "Updating mob %d.\n\r", mob->vnum );
							send_to_char( buf, ch );
							mpl->code = mpc->code;
						}
	}

        ch->desc->pString = NULL;
	if (STATE(ch->desc) == CON_EXDESC) {
		extern char *MENU;

		send_to_char(MENU, ch);
		STATE(ch->desc) = CON_MENU;
	}
        return;
    }

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

    /*
     * Truncate strings to MAX_STRING_LENGTH.
     * --------------------------------------
     */
    if (strlen(buf) + strlen(str) >= (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( str );
    strcat( buf, str );
    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.
 */
/*****************************************************************************
 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;
}

char *string_linedel( char *string, int line )
{
	char *strtmp = string;
	char buf[MAX_STRING_LENGTH];
	int cnt = 1, tmp = 0;

	buf[0] = '\0';

	for ( ; *strtmp != '\0'; strtmp++ )
	{
		if ( cnt != line )
			buf[tmp++] = *strtmp;

		if ( *strtmp == '\n' )
		{
			if ( *(strtmp + 1) == '\r' )
			{
				if ( cnt != line )
					buf[tmp++] = *(++strtmp);
				else
					++strtmp;
			}

			cnt++;
		}
	}

	buf[tmp] = '\0';

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

char *string_lineadd( char *string, char *newstr, int line )
{
	char *strtmp = string;
	int cnt = 1, tmp = 0;
	bool done = FALSE;
	char buf[MAX_STRING_LENGTH];

	buf[0] = '\0';

	for ( ; *strtmp != '\0' || (!done && cnt == line); strtmp++ )
	{
		if ( cnt == line && !done )
		{
			strcat( buf, newstr );
			strcat( buf, "\n\r" );
			tmp += strlen(newstr) + 2;
			cnt++;
			done = TRUE;
		}

		buf[tmp++] = *strtmp;

		if ( done && *strtmp == '\0' )
			break;

		if ( *strtmp == '\n' )
		{
			if ( *(strtmp + 1) == '\r' )
				buf[tmp++] = *(++strtmp);

			cnt++;
		}

		buf[tmp] = '\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;
}