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///! use strip_bom::StripBom;
///!
///! let my_string: Vec<u8> = vec![0xefu8, 0xbb, 0xbf, 0xf0, 0x9f, 0x8d, 0xa3];
///! let my_string: String = String::from_utf8(my_string).unwrap();
///!
///! // In this time, my_string has the BOM => true 🍣
///! println!("{} {}", my_string.starts_with("\u{feff}"), &my_string);
///!
///! // Strip BOM
///! let my_string: &str = my_string.strip_bom();
///!
///! // my_string (slice) has not the BOM => false 🍣
///! println!("{} {}", my_string.starts_with("\u{feff}"), &my_string);

pub trait StripBom
{
 fn strip_bom(&self) -> &str;
}

impl StripBom for str
{
 fn strip_bom(&self) -> &str
 {
  if self.starts_with("\u{feff}")
  {
   &self[3..]
  }
  else
  {
   &self[..]
  }
 }
}

impl StripBom for String
{
 fn strip_bom(&self) -> &str
 {
  &self[..].strip_bom()
 }
}