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//! Unicode utilities and character properties.
use std::convert::TryFrom;
pub mod codepoint;
mod emoji_data;
pub mod mcc;
/// A Unicode variation selector.
///
/// VS04-VS14 are omitted as they aren't currently used.
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum VariationSelector {
/// VARIATION SELECTOR-1
VS01 = 1,
/// VARIATION SELECTOR-2
VS02 = 2,
/// VARIATION SELECTOR-3
VS03 = 3,
/// Text presentation
VS15 = 15,
/// Emoji presentation
VS16 = 16,
}
impl TryFrom<char> for VariationSelector {
type Error = ();
fn try_from(ch: char) -> Result<Self, Self::Error> {
match ch {
'\u{FE00}' => Ok(VariationSelector::VS01),
'\u{FE01}' => Ok(VariationSelector::VS02),
'\u{FE02}' => Ok(VariationSelector::VS03),
'\u{FE0E}' => Ok(VariationSelector::VS15),
'\u{FE0F}' => Ok(VariationSelector::VS16),
_ => Err(()),
}
}
}
/// Returns the `Emoji_Presentation` Unicode property for a character.
///
/// ```
/// use allsorts::unicode::bool_prop_emoji_presentation;
///
/// assert_eq!(bool_prop_emoji_presentation('🦀'), true);
/// assert_eq!(bool_prop_emoji_presentation('&'), false);
pub fn bool_prop_emoji_presentation(ch: char) -> bool {
emoji_data::EMOJI_PRESENTATION.contains_u32(ch as u32)
}