From fe5d9cfea41565dc13adeb169fbd444ab72b023f Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Tue, 26 Sep 2023 15:22:20 +0200
Subject: Switch to new JLPT levels and regenerate batches 014-

---
 src/main.rs | 36 +++++++++++++++++++++++-------------
 1 file changed, 23 insertions(+), 13 deletions(-)

(limited to 'src')

diff --git a/src/main.rs b/src/main.rs
index c882741..597ebdf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -191,6 +191,8 @@ fn index_jmdict<'a>(dict: &'a roxmltree::Document) -> DictIndex<'a> {
 }
 
 fn parse_kanjidic() -> Result<Vec<(String, Charset)>> {
+    let n3_kanji = Charset::new(&fs::read_to_string("data/n3_kanji.txt")?.trim());
+
     let file = fs::read_to_string("data/kanjidic2.xml")?;
     let xml = roxmltree::Document::parse(&file)?;
     let kanjidic = xml.root().first_child().unwrap();
@@ -225,6 +227,13 @@ fn parse_kanjidic() -> Result<Vec<(String, Charset)>> {
             _ => (),
         }
         if let Some(lit) = literal {
+            assert_eq!(lit.chars().count(), 1);
+            let jlpt = match jlpt {
+                Some(4) => Some(5),
+                Some(3) => Some(4),
+                Some(2) if n3_kanji.contains(lit.chars().next().unwrap()) => Some(3),
+                x => x,
+            };
             levels
                 .entry((jlpt, grade))
                 .or_insert(String::new())
@@ -338,25 +347,25 @@ fn parse_jlpt_vocab(all_kanji: &Charset) -> Result<()> {
     let mut vocab = vec![];
     vocab.extend(parse_jlpt_vocab_combined(
         "data/n5_vocab.txt",
-        "N4",
+        "N5",
         all_kanji,
     )?);
     vocab.extend(parse_jlpt_vocab_split(
         "data/n4_vocab_hiragana.txt",
         "data/n4_vocab_eng.txt",
-        "N3",
+        "N4",
         all_kanji,
     )?);
     vocab.extend(parse_jlpt_vocab_split(
         "data/n3_vocab_hiragana.txt",
         "data/n3_vocab_eng.txt",
-        "N2a",
+        "N3",
         all_kanji,
     )?);
     vocab.extend(parse_jlpt_vocab_split(
         "data/n2_vocab_hiragana.txt",
         "data/n2_vocab_eng.txt",
-        "N2b",
+        "N2",
         all_kanji,
     )?);
     vocab.extend(parse_jlpt_vocab_split(
@@ -685,11 +694,7 @@ fn gen_level(
         }
 
         // Find combination that does that with a good number of examples (tgt_len)
-        let factor = match level {
-            "N1b" => 1.08,
-            _ => 1.0,
-        };
-        let tgt_len = (avg_len * factor * (batch_count as f32 + 1.)).ceil() as i64
+        let tgt_len = (avg_len * (batch_count as f32 + 1.)).ceil() as i64
             - (sum_len + batch.examples.len()) as i64;
         let dyn_mat_cnt = |i| {
             let mut cnt = 0;
@@ -874,12 +879,15 @@ fn cleanup_batches(all_batches: &mut [Batch], kanji_levels: &[(String, Charset)]
                 .flatten(),
         );
 
-        batch.level = kanji_levels
+        let mut levels = kanji_levels
             .iter()
             .filter(|(_, chars)| chars.inter_len(&batch.chars) > 0)
             .map(|(lvl, _)| lvl.to_string())
-            .collect::<Vec<_>>()
-            .join("/");
+            .collect::<Vec<_>>();
+        while levels.len() > 2 {
+            levels.remove(1);
+        }
+        batch.level = levels.join("/");
         done = done.union(&batch.chars);
         batch.chars_bad = all_chars.diff(&done);
         batch.chars_p1 = all_chars.inter(&chars_p1);
@@ -892,15 +900,17 @@ fn cleanup_batches(all_batches: &mut [Batch], kanji_levels: &[(String, Charset)]
 
 fn add_vocab(all_batches: &mut [Batch], vocab: &[JlptVocab]) {
     let match_level = |batch: &Batch, level: &str| {
+        let n5 = batch.level.contains("N5");
         let n4 = batch.level.contains("N4");
         let n3 = batch.level.contains("N3");
         let n2 = batch.level.contains("N2");
         let n1 = batch.level.contains("N1");
         let n0 = batch.level.contains("N0");
         match level {
+            "N5" => n5 || n4 || n3 || n2 || n1 || n0,
             "N4" => n4 || n3 || n2 || n1 || n0,
             "N3" => n3 || n2 || n1 || n0,
-            "N2" | "N2a" | "N2b" => n2 || n1 || n0,
+            "N2" => n2 || n1 || n0,
             "N1" => n1 || n0,
             "N0" => n0,
             _ => panic!("invalid vocab level {}", level),
-- 
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