lindera_dictionary/builder/
unknown_dictionary.rs

1use std::borrow::Cow;
2use std::fs::File;
3use std::io::{self, Write};
4use std::path::Path;
5
6use derive_builder::Builder;
7use log::debug;
8
9use crate::LinderaResult;
10use crate::decompress::Algorithm;
11use crate::dictionary::character_definition::CharacterDefinition;
12use crate::dictionary::unknown_dictionary::parse_unk;
13use crate::error::LinderaErrorKind;
14use crate::util::{compress_write, read_file_with_encoding};
15
16#[derive(Builder, Debug)]
17#[builder(name = UnknownDictionaryBuilderOptions)]
18#[builder(build_fn(name = "builder"))]
19pub struct UnknownDictionaryBuilder {
20    #[builder(default = "\"UTF-8\".into()", setter(into))]
21    encoding: Cow<'static, str>,
22    #[builder(default = "Algorithm::Deflate")]
23    compress_algorithm: Algorithm,
24}
25
26impl UnknownDictionaryBuilder {
27    pub fn build(
28        &self,
29        input_dir: &Path,
30        chardef: &CharacterDefinition,
31        output_dir: &Path,
32    ) -> LinderaResult<()> {
33        let unk_data_path = input_dir.join("unk.def");
34        debug!("reading {unk_data_path:?}");
35        let unk_data = read_file_with_encoding(&unk_data_path, &self.encoding)?;
36        let unknown_dictionary = parse_unk(chardef.categories(), &unk_data)?;
37
38        let mut unk_buffer = Vec::new();
39        let bytes = rkyv::to_bytes::<rkyv::rancor::Error>(&unknown_dictionary).map_err(|err| {
40            LinderaErrorKind::Serialize
41                .with_error(anyhow::anyhow!(err))
42                .add_context("Failed to serialize unknown dictionary data")
43        })?;
44        unk_buffer.write_all(&bytes).map_err(|err| {
45            LinderaErrorKind::Io
46                .with_error(anyhow::anyhow!(err))
47                .add_context("Failed to write unknown dictionary data to buffer")
48        })?;
49
50        let wtr_unk_path = output_dir.join(Path::new("unk.bin"));
51        let mut wtr_unk = io::BufWriter::new(
52            File::create(wtr_unk_path)
53                .map_err(|err| LinderaErrorKind::Io.with_error(anyhow::anyhow!(err)))?,
54        );
55
56        compress_write(&unk_buffer, self.compress_algorithm, &mut wtr_unk)?;
57
58        wtr_unk
59            .flush()
60            .map_err(|err| LinderaErrorKind::Io.with_error(anyhow::anyhow!(err)))?;
61
62        Ok(())
63    }
64}
lindera_dictionary/builder/unknown_dictionary.rs

lindera_dictionary/builder/
unknown_dictionary.rs
