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implement the pattern mapping fromg string to numbering kind

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LU Jialin 2024-12-30 20:02:54 -08:00
parent cfd6357de0
commit 8c89b664e5
1 changed files with 50 additions and 0 deletions
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50
crates/typst-library/src/model/numbering.rs
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@ -421,6 +421,56 @@ impl NumberingKind {
}
}
fn from_numbering_pattern_str(s: &str) -> Option<Self> {
if s.chars().count() == 1 {
return Self::from_char(s.chars().next().unwrap());
}
Some(match s {
"arabic" => Self::Arabic,
"latin" => Self::LowerLatin,
"Latin" => Self::UpperLatin,
"roman" => Self::LowerRoman,
"Roman" => Self::UpperRoman,
"greek" => Self::LowerGreek,
"Greek" => Self::UpperGreek,
"symbols" => Self::Symbol,
"hebrew" => Self::Hebrew,
"chinese" | "lowercase-chinese" => Self::LowerSimplifiedChinese,
"Chinese" | "uppercase-chinese" => Self::UpperSimplifiedChinese,
"hiragana" | "hiragana-aiueo" => Self::HiraganaAiueo,
"hiragana-iroha" => Self::HiraganaIroha,
"katakana" | "katakana-aiueo" => Self::KatakanaAiueo,
"katakana-iroha" => Self::KatakanaIroha,
"korean-jamo" => Self::KoreanJamo,
"korean" | "korean-syllable" => Self::KoreanSyllable,
"eastern-arabic" => Self::EasternArabic,
"persian" | "eastern-arabic-persian" => Self::EasternArabicPersian,
"devanagari" => Self::DevanagariNumber,
"bengali" => Self::BengaliNumber,
"bengali-letter" => Self::BengaliLetter,
"circled" => Self::CircledNumber,
"double-circled" => Self::DoubleCircledNumber,
_ => return None,
})
}
/// Parse a braced long-form numbering kind like "{arabic}" from a character slice.
/// Returns (kind, consumed_chars) if successful, None if not a valid braced string.
fn from_braced_numbering_pattern_str(s: &str) -> Option<(Self, usize)> {
// Need at least "{x}" (3 bytes minimum for UTF-8)
if s.len() < 3 || s.as_bytes()[0] != b'{' {
return None;
}
let end_byte_idx = s.find('}')?;
if end_byte_idx < 2 {
return None;
}
Some((Self::from_numbering_pattern_str(&s[1..end_byte_idx])?, end_byte_idx + 1))
}
/// Apply the numbering to the given number.
pub fn apply(self, n: usize) -> EcoString {
match self {