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Diffstat (limited to 'vendor/unicode-security/src/mixed_script.rs')
| -rw-r--r-- | vendor/unicode-security/src/mixed_script.rs | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/vendor/unicode-security/src/mixed_script.rs b/vendor/unicode-security/src/mixed_script.rs deleted file mode 100644 index bffc1028..00000000 --- a/vendor/unicode-security/src/mixed_script.rs +++ /dev/null @@ -1,209 +0,0 @@ -//! [Mixed-script detection](https://www.unicode.org/reports/tr39/#Mixed_Script_Detection) - -use core::fmt::{self, Debug}; -use unicode_script::{Script, ScriptExtension}; - -/// An Augmented script set, as defined by UTS 39 -/// -/// https://www.unicode.org/reports/tr39/#def-augmented-script-set -#[derive(Copy, Clone, PartialEq, Hash, Eq)] -pub struct AugmentedScriptSet { - /// The base ScriptExtension value - pub base: ScriptExtension, - /// Han With Bopomofo - pub hanb: bool, - /// Japanese - pub jpan: bool, - /// Korean - pub kore: bool, -} - -impl From<ScriptExtension> for AugmentedScriptSet { - fn from(ext: ScriptExtension) -> Self { - let mut hanb = false; - let mut jpan = false; - let mut kore = false; - - if ext.is_common() || ext.is_inherited() || ext.contains_script(Script::Han) { - hanb = true; - jpan = true; - kore = true; - } else { - if ext.contains_script(Script::Hiragana) || ext.contains_script(Script::Katakana) { - jpan = true; - } - - if ext.contains_script(Script::Hangul) { - kore = true; - } - - if ext.contains_script(Script::Bopomofo) { - hanb = true; - } - } - Self { - base: ext, - hanb, - jpan, - kore, - } - } -} - -impl From<char> for AugmentedScriptSet { - fn from(c: char) -> Self { - AugmentedScriptSet::for_char(c) - } -} - -impl From<&'_ str> for AugmentedScriptSet { - fn from(s: &'_ str) -> Self { - AugmentedScriptSet::for_str(s) - } -} - -impl Default for AugmentedScriptSet { - fn default() -> Self { - AugmentedScriptSet { - base: Script::Common.into(), - hanb: true, - jpan: true, - kore: true, - } - } -} - -impl Debug for AugmentedScriptSet { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - if self.is_empty() { - write!(f, "AugmentedScriptSet {{∅}}")?; - } else if self.is_all() { - write!(f, "AugmentedScriptSet {{ALL}}")?; - } else { - write!(f, "AugmentedScriptSet {{")?; - let mut first_entry = true; - let hanb = if self.hanb { Some("Hanb") } else { None }; - let jpan = if self.jpan { Some("Jpan") } else { None }; - let kore = if self.kore { Some("Kore") } else { None }; - for writing_system in None - .into_iter() - .chain(hanb) - .chain(jpan) - .chain(kore) - .chain(self.base.iter().map(Script::short_name)) - { - if !first_entry { - write!(f, ", ")?; - } else { - first_entry = false; - } - write!(f, "{}", writing_system)?; - } - write!(f, "}}")?; - } - Ok(()) - } -} - -impl fmt::Display for AugmentedScriptSet { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - if self.is_empty() { - write!(f, "Empty")?; - } else if self.is_all() { - write!(f, "All")?; - } else { - let mut first_entry = true; - let hanb = if self.hanb { - Some("Han with Bopomofo") - } else { - None - }; - let jpan = if self.jpan { Some("Japanese") } else { None }; - let kore = if self.kore { Some("Korean") } else { None }; - for writing_system in None - .into_iter() - .chain(hanb) - .chain(jpan) - .chain(kore) - .chain(self.base.iter().map(Script::full_name)) - { - if !first_entry { - write!(f, ", ")?; - } else { - first_entry = false; - } - write!(f, "{}", writing_system)?; - } - } - Ok(()) - } -} - -impl AugmentedScriptSet { - /// Intersect this set with another - pub fn intersect_with(&mut self, other: Self) { - self.base.intersect_with(other.base); - self.hanb = self.hanb && other.hanb; - self.jpan = self.jpan && other.jpan; - self.kore = self.kore && other.kore; - } - - /// Check if the set is empty - pub fn is_empty(&self) -> bool { - self.base.is_empty() && !self.hanb && !self.jpan && !self.kore - } - - /// Check if the set is "All" (Common or Inherited) - pub fn is_all(&self) -> bool { - self.base.is_common() || self.base.is_inherited() - } - - /// Construct an AugmentedScriptSet for a given character - pub fn for_char(c: char) -> Self { - ScriptExtension::from(c).into() - } - - /// Find the [resolved script set](https://www.unicode.org/reports/tr39/#def-resolved-script-set) of a given string - pub fn for_str(s: &str) -> Self { - let mut set = AugmentedScriptSet::default(); - for ch in s.chars() { - set.intersect_with(ch.into()) - } - set - } -} - -/// Extension trait for [mixed-script detection](https://www.unicode.org/reports/tr39/#Mixed_Script_Detection) -pub trait MixedScript { - /// Check if a string is [single-script](https://www.unicode.org/reports/tr39/#def-single-script) - /// - /// Note that a single-script string may still contain multiple Script properties! - fn is_single_script(self) -> bool; - - /// Find the [resolved script set](https://www.unicode.org/reports/tr39/#def-resolved-script-set) of a given string - fn resolve_script_set(self) -> AugmentedScriptSet; -} - -impl MixedScript for &'_ str { - fn is_single_script(self) -> bool { - !AugmentedScriptSet::for_str(self).is_empty() - } - - fn resolve_script_set(self) -> AugmentedScriptSet { - self.into() - } -} - -/// Check if a character is considered potential mixed script confusable. -/// -/// If the specified character is not restricted from use for identifiers, -/// this function returns whether it is considered mixed script confusable -/// with another character that is not restricted from use for identifiers. -/// -/// If the specified character is restricted from use for identifiers, -/// the return value is unspecified. -pub fn is_potential_mixed_script_confusable_char(c: char) -> bool { - use crate::tables::potential_mixed_script_confusable::potential_mixed_script_confusable; - - potential_mixed_script_confusable(c) -} |