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use napi::bindgen_prelude::*;
use napi_derive::napi;
use serde::{Deserialize, Serialize};
use std::sync::{Arc, RwLock};
use tk::normalizers::NormalizerWrapper;
use tk::NormalizedString;
use tokenizers as tk;
/// Normalizer
#[derive(Debug, Clone, Serialize, Deserialize)]
#[napi]
pub struct Normalizer {
#[serde(flatten, with = "arc_rwlock_serde")]
normalizer: Option<Arc<RwLock<NormalizerWrapper>>>,
}
#[napi]
impl Normalizer {
#[napi]
pub fn normalize_string(&self, sequence: String) -> Result<String> {
use tk::Normalizer;
let mut normalized = NormalizedString::from(sequence);
self
.normalize(&mut normalized)
.map_err(|e| Error::from_reason(format!("{}", e)))?;
Ok(normalized.get().to_string())
}
}
impl tk::Normalizer for Normalizer {
fn normalize(&self, normalized: &mut NormalizedString) -> tk::Result<()> {
self
.normalizer
.as_ref()
.ok_or("Uninitialized Normalizer")?
.read()
.unwrap()
.normalize(normalized)?;
Ok(())
}
}
#[napi]
pub fn prepend_normalizer(prepend: String) -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(
tk::normalizers::prepend::Prepend::new(prepend).into(),
))),
}
}
#[napi]
pub fn strip_accents_normalizer() -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(
tk::normalizers::strip::StripAccents.into(),
))),
}
}
#[napi(object)]
#[derive(Default)]
pub struct BertNormalizerOptions {
pub clean_text: Option<bool>,
pub handle_chinese_chars: Option<bool>,
pub strip_accents: Option<bool>,
pub lowercase: Option<bool>,
}
/// bert_normalizer(options?: {
/// cleanText?: bool = true,
/// handleChineseChars?: bool = true,
/// stripAccents?: bool = true,
/// lowercase?: bool = true
/// })
#[napi]
pub fn bert_normalizer(options: Option<BertNormalizerOptions>) -> Normalizer {
let options = options.unwrap_or_default();
Normalizer {
normalizer: Some(Arc::new(RwLock::new(
tk::normalizers::bert::BertNormalizer::new(
options.clean_text.unwrap_or(true),
options.handle_chinese_chars.unwrap_or(true),
options.strip_accents,
options.lowercase.unwrap_or(true),
)
.into(),
))),
}
}
#[napi]
pub fn nfd_normalizer() -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(tk::normalizers::unicode::NFD.into()))),
}
}
#[napi]
pub fn nfkd_normalizer() -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(tk::normalizers::unicode::NFKD.into()))),
}
}
#[napi]
pub fn nfc_normalizer() -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(tk::normalizers::unicode::NFC.into()))),
}
}
#[napi]
pub fn nfkc_normalizer() -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(tk::normalizers::unicode::NFKC.into()))),
}
}
// /// strip(left?: boolean, right?: boolean)
#[napi]
pub fn strip_normalizer(left: Option<bool>, right: Option<bool>) -> Normalizer {
let left = left.unwrap_or(true);
let right = right.unwrap_or(true);
Normalizer {
normalizer: Some(Arc::new(RwLock::new(
tk::normalizers::strip::Strip::new(left, right).into(),
))),
}
}
#[napi]
pub fn sequence_normalizer(normalizers: Vec<&Normalizer>) -> Normalizer {
let mut sequence: Vec<NormalizerWrapper> = Vec::with_capacity(normalizers.len());
normalizers.into_iter().for_each(|normalizer| {
if let Some(normalizer) = &normalizer.normalizer {
sequence.push((**normalizer).read().unwrap().clone())
}
});
Normalizer {
normalizer: Some(Arc::new(RwLock::new(NormalizerWrapper::Sequence(
tk::normalizers::Sequence::new(sequence),
)))),
}
}
#[napi]
pub fn lowercase() -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(
tk::normalizers::utils::Lowercase.into(),
))),
}
}
#[napi]
pub fn replace(pattern: String, content: String) -> Result<Normalizer> {
Ok(Normalizer {
normalizer: Some(Arc::new(RwLock::new(
tk::normalizers::replace::Replace::new(pattern, content)
.map_err(|e| Error::from_reason(e.to_string()))?
.into(),
))),
})
}
#[napi]
pub fn nmt() -> Normalizer {
Normalizer {
normalizer: Some(Arc::new(RwLock::new(tk::normalizers::unicode::Nmt.into()))),
}
}
#[napi]
pub fn precompiled(bytes: Vec<u8>) -> Result<Normalizer> {
Ok(Normalizer {
normalizer: Some(Arc::new(RwLock::new(
tk::normalizers::precompiled::Precompiled::from(&bytes)
.map_err(|e| Error::from_reason(e.to_string()))?
.into(),
))),
})
}
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