/* Do not remove the headers from this file! see /USAGE for more info. */

/* Note: this is now a wrapper for the efun, allowing "on the fly"
 * modification */
#define VOWELS ({'a', 'e', 'i', 'o', 'u'})

//:MODULE
//
//The grammar module contains a number of functions for producing high
//quality english output.

//:FUNCTION pluralize
//
//Convert a noun to it's plural form.  Oddly enough, it's also quite
//good at converting verbs to their singular form, since going from plural to
//singular often entails adding an 's'.  Eg, they run, he runs.

string pluralize(string str)
{
  switch (str)
  {
    case "were": return "was";
    case "don't": return "doesn't";
    case "aren't": return "isn't";
    case "possum": return "possums";
    case "staff": return "staves";
    case "die": return "dies";
    case "laf": return "lafs";
    case "barf": return "barfs";
    case "snarf": return "snarfs";
    case "hum": return "hums";
  }

  if ( str[<2..<1] == "ff" )	/* e.g. "bluff" */
    return str + "s";
// Temporary fix for MudOS v22.2b13 pluralizing elf as eves
  if ( str[<1..<1] == "f" )
{
LBUG(str);
    return str[0..<2] + "ves";
}
  if ( str[<5..<1] == "penis" )
    return str + "es";

  return efun::pluralize(str);
}	

// punctuate Written by Rust.

//:FUNCTION punctuate
//Adds a period to a sentence if needed.
string punctuate( string str )
{
    int		last_char;

    if(!stringp(str) || !strlen(str))
	return "";

    while ( strlen(str) && str[<1] == ' ' )
	str = str[0..<2];
    if ( !strlen(str) )
	return "";

    last_char = str[<1];
    if( ( last_char >= 'a' && last_char <= 'z' ) ||
      ( last_char >= 'A' && last_char <= 'Z' ) )
	return str+".";

    return str;
}

//:FUNCTION number_of
//Handles the common operation: "0 bogs", "1 bog", "2 bogs", ...
//number_of(num, what)
string number_of(int num, string what) {
    if (num == 1) return "1 " + what;
    return num + " " + pluralize(what);
}

//:FUNCTION number_word
//
//number_word(1) == "one", etc.  number_word(10) == "10" and similarly
//for numbers greater than 10, which is consistent with most English
//style guidelines
string number_word(int num) {
    switch (num) {
    case 1:
	return "one";
    case 2:
	return "two";
    case 3:
	return "three";
    case 4:
	return "four";
    case 5:
	return "five";
    case 6:
	return "six";
    case 7:
	return "seven";
    case 8:
	return "eight";
    case 9:
	return "nine";
    default:
	return num+"";
    }
}