From 3b7e03874fcf3c73d13fdab66edf1c21a13868a0 Mon Sep 17 00:00:00 2001
From: ElnuDev <elnu@elnu.com>
Date: Sun, 11 Jun 2023 11:17:55 -0700
Subject: [PATCH] Implement kyujitai

---
 src/challenge.rs          |  40 ++--
 src/kyujitai.rs           | 387 ++++++++++++++++++++++++++++++++++++++
 src/main.rs               |   2 +
 templates/index.html.tera |  15 +-
 4 files changed, 431 insertions(+), 13 deletions(-)
 create mode 100644 src/kyujitai.rs

diff --git a/src/challenge.rs b/src/challenge.rs
index 7577658..2cc336b 100644
--- a/src/challenge.rs
+++ b/src/challenge.rs
@@ -4,6 +4,8 @@ use std::str::FromStr;
 use serde::{Deserialize, Deserializer, Serialize};
 use serde_yaml::Value;
 
+use crate::kyujitai::{Kyujitai, self};
+
 #[derive(Serialize, Deserialize)]
 pub struct Challenge {
     pub japanese: Vec<Vec<Vec<ChallengeWord>>>,
@@ -44,23 +46,23 @@ impl<'de> Deserialize<'de> for ChallengeWord {
             ));
         };
         let text = map.get("text").map(|value| match value {
-            Value::String(string) => vec![Furigana {
-                kanji: string.clone(),
-                furigana: None,
-            }],
+            Value::String(string) => vec![Furigana::new(
+                string.clone(),
+                None,
+            )],
             Value::Sequence(sequence) => sequence
                 .iter()
                 .map(|value| match value {
-                    Value::String(kanji) => Furigana {
-                        kanji: kanji.to_owned(),
-                        furigana: None,
-                    },
+                    Value::String(kanji) => Furigana::new(
+                        kanji.to_owned(),
+                        None,
+                    ),
                     Value::Mapping(mapping) => {
                         let (kanji, furigana) = mapping.iter().next().unwrap();
-                        Furigana {
-                            kanji: kanji.as_str().unwrap().to_owned(),
-                            furigana: Some(furigana.as_str().unwrap().to_owned()),
-                        }
+                        Furigana::new(
+                            kanji.as_str().unwrap().to_owned(),
+                            Some(furigana.as_str().unwrap().to_owned())
+                        )
                     }
                     _ => panic!(),
                 })
@@ -122,9 +124,23 @@ impl FromStr for PartOfSpeech {
 #[derive(Serialize, Deserialize)]
 pub struct Furigana {
     pub kanji: String,
+    pub kyujitai: Option<String>,
     pub furigana: Option<String>,
 }
 
+impl Furigana {
+    fn new(kanji: String, furigana: Option<String>) -> Self {
+        Self {
+            kyujitai: match kanji.to_kyujitai() {
+                kyujitai if kyujitai.eq(&kanji) => None,
+                kyujitai => Some(kyujitai),
+            },
+            kanji,
+            furigana,
+        }
+    }
+}
+
 #[derive(Serialize, Deserialize)]
 pub struct Translation {
     pub author: Option<String>,
diff --git a/src/kyujitai.rs b/src/kyujitai.rs
new file mode 100644
index 0000000..1de0534
--- /dev/null
+++ b/src/kyujitai.rs
@@ -0,0 +1,387 @@
+const KYUJITAI: &[(char, char)] = &[
+    ('万', '萬'),
+    ('与', '與'),
+    ('両', '兩'),
+    ('並', '竝'),
+    ('乗', '乘'),
+    ('乱', '亂'),
+    ('争', '爭'),
+    ('亜', '亞'),
+    ('仏', '佛'),
+    ('仮', '假'),
+    ('会', '會'),
+    ('伝', '傳'),
+    ('余', '餘'),
+    ('体', '體'),
+    ('価', '價'),
+    ('併', '倂'),
+    ('倹', '儉'),
+    ('偽', '僞'),
+    ('児', '兒'),
+    ('党', '黨'),
+    ('内', '內'),
+    ('円', '圓'),
+    ('冊', '册'),
+    ('写', '寫'),
+    ('冴', '冱'),
+    ('処', '處'),
+    ('剣', '劍'),
+    ('剤', '劑'),
+    ('剰', '剩'),
+    ('励', '勵'),
+    ('労', '勞'),
+    ('効', '效'),
+    ('勅', '敕'),
+    ('勧', '勸'),
+    ('勲', '勳'),
+    ('区', '區'),
+    ('医', '醫'),
+    ('即', '卽'),
+    ('巻', '卷'),
+    ('参', '參'),
+    ('収', '收'),
+    ('双', '雙'),
+    ('叙', '敍'),
+    ('号', '號'),
+    ('台', '臺'),
+    ('嘱', '囑'),
+    ('団', '團'),
+    ('囲', '圍'),
+    ('図', '圖'),
+    ('国', '國'),
+    ('圏', '圈'),
+    ('圧', '壓'),
+    ('尭', '堯'),
+    ('堕', '墮'),
+    ('塁', '壘'),
+    ('塩', '鹽'),
+    ('増', '增'),
+    ('壊', '壞'),
+    ('壌', '壤'),
+    ('壮', '壯'),
+    ('壱', '壹'),
+    ('売', '賣'),
+    ('声', '聲'),
+    ('変', '變'),
+    ('奥', '奧'),
+    ('奨', '奬'),
+    ('姫', '姬'),
+    ('婿', '壻'),
+    ('嬢', '孃'),
+    ('学', '學'),
+    ('実', '實'),
+    ('宝', '寶'),
+    ('寛', '寬'),
+    ('寝', '寢'),
+    ('寿', '壽'),
+    ('対', '對'),
+    ('専', '專'),
+    ('将', '將'),
+    ('当', '當'),
+    ('尚', '尙'),
+    ('単', '單'),
+    ('巣', '巢'),
+    ('営', '營'),
+    ('厳', '嚴'),
+    ('尽', '盡'),
+    ('届', '屆'),
+    ('属', '屬'),
+    ('岳', '嶽'),
+    ('峡', '峽'),
+    ('巌', '巖'),
+    ('帯', '帶'),
+    ('帰', '歸'),
+    ('広', '廣'),
+    ('庁', '廳'),
+    ('廃', '廢'),
+    ('弐', '貳'),
+    ('弥', '彌'),
+    ('弾', '彈'),
+    ('彦', '彥'),
+    ('径', '徑'),
+    ('従', '從'),
+    ('徴', '徵'),
+    ('徳', '德'),
+    ('応', '應'),
+    ('恒', '恆'),
+    ('恵', '惠'),
+    ('悩', '惱'),
+    ('恋', '戀'),
+    ('悪', '惡'),
+    ('悦', '悅'),
+    ('惨', '慘'),
+    ('慎', '愼'),
+    ('懐', '懷'),
+    ('戦', '戰'),
+    ('戯', '戲'),
+    ('戸', '戶'),
+    ('戻', '戾'),
+    ('払', '拂'),
+    ('抜', '拔'),
+    ('択', '擇'),
+    ('拝', '拜'),
+    ('担', '擔'),
+    ('拠', '據'),
+    ('拡', '擴'),
+    ('挟', '挾'),
+    ('挿', '插'),
+    ('捜', '搜'),
+    ('挙', '擧'),
+    ('掲', '揭'),
+    ('揺', '搖'),
+    ('摂', '攝'),
+    ('撃', '擊'),
+    ('教', '敎'),
+    ('数', '數'),
+    ('断', '斷'),
+    ('旧', '舊'),
+    ('昼', '晝'),
+    ('晋', '晉'),
+    ('晩', '晚'),
+    ('暁', '曉'),
+    ('暦', '曆'),
+    ('来', '來'),
+    ('条', '條'),
+    ('枢', '樞'),
+    ('栄', '榮'),
+    ('桟', '棧'),
+    ('桜', '櫻'),
+    ('検', '檢'),
+    ('楽', '樂'),
+    ('楼', '樓'),
+    ('槙', '槇'),
+    ('様', '樣'),
+    ('概', '槪'),
+    ('横', '橫'),
+    ('権', '權'),
+    ('欠', '缺'),
+    ('欧', '歐'),
+    ('歓', '歡'),
+    ('歩', '步'),
+    ('歴', '歷'),
+    ('残', '殘'),
+    ('殴', '毆'),
+    ('殻', '殼'),
+    ('毎', '每'),
+    ('気', '氣'),
+    ('没', '沒'),
+    ('沢', '澤'),
+    ('浄', '淨'),
+    ('浅', '淺'),
+    ('涙', '淚'),
+    ('浜', '濱'),
+    ('渉', '涉'),
+    ('渇', '渴'),
+    ('渓', '溪'),
+    ('渋', '澁'),
+    ('済', '濟'),
+    ('清', '淸'),
+    ('温', '溫'),
+    ('満', '滿'),
+    ('湿', '濕'),
+    ('湾', '灣'),
+    ('滞', '滯'),
+    ('滝', '瀧'),
+    ('潜', '潛'),
+    ('瀬', '瀨'),
+    ('灯', '燈'),
+    ('炉', '爐'),
+    ('為', '爲'),
+    ('点', '點'),
+    ('焼', '燒'),
+    ('犠', '犧'),
+    ('状', '狀'),
+    ('狭', '狹'),
+    ('独', '獨'),
+    ('猟', '獵'),
+    ('献', '獻'),
+    ('獣', '獸'),
+    ('瑶', '瑤'),
+    ('瓶', '甁'),
+    ('産', '產'),
+    ('画', '畫'),
+    ('畳', '疊'),
+    ('痴', '癡'),
+    ('発', '發'),
+    ('盗', '盜'),
+    ('県', '縣'),
+    ('真', '眞'),
+    ('研', '硏'),
+    ('砕', '碎'),
+    ('礼', '禮'),
+    ('禄', '祿'),
+    ('禅', '禪'),
+    ('秘', '祕'),
+    ('称', '稱'),
+    ('税', '稅'),
+    ('稲', '稻'),
+    ('穂', '穗'),
+    ('穏', '穩'),
+    ('穣', '穰'),
+    ('窃', '竊'),
+    ('粋', '粹'),
+    ('糸', '絲'),
+    ('経', '經'),
+    ('絵', '繪'),
+    ('続', '續'),
+    ('継', '繼'),
+    ('緒', '緖'),
+    ('緑', '綠'),
+    ('総', '總'),
+    ('縄', '繩'),
+    ('縁', '緣'),
+    ('縦', '縱'),
+    ('繊', '纖'),
+    ('缶', '罐'),
+    ('聡', '聰'),
+    ('聴', '聽'),
+    ('粛', '肅'),
+    ('胆', '膽'),
+    ('脱', '脫'),
+    ('脳', '腦'),
+    ('臓', '臟'),
+    ('舎', '舍'),
+    ('舗', '舖'),
+    ('艶', '艷'),
+    ('芸', '藝'),
+    ('茎', '莖'),
+    ('荘', '莊'),
+    ('蔵', '藏'),
+    ('薫', '薰'),
+    ('薬', '藥'),
+    ('虚', '虛'),
+    ('虫', '蟲'),
+    ('蚕', '蠶'),
+    ('蛍', '螢'),
+    ('蛮', '蠻'),
+    ('衛', '衞'),
+    ('装', '裝'),
+    ('褒', '襃'),
+    ('覇', '霸'),
+    ('覚', '覺'),
+    ('覧', '覽'),
+    ('観', '觀'),
+    ('触', '觸'),
+    ('訳', '譯'),
+    ('証', '證'),
+    ('誉', '譽'),
+    ('読', '讀'),
+    ('謡', '謠'),
+    ('譲', '讓'),
+    ('豊', '豐'),
+    ('賛', '贊'),
+    ('践', '踐'),
+    ('転', '轉'),
+    ('軽', '輕'),
+    ('辞', '辭'),
+    ('辺', '邊'),
+    ('逓', '遞'),
+    ('遥', '遙'),
+    ('遅', '遲'),
+    ('郎', '郞'),
+    ('郷', '鄕'),
+    ('酔', '醉'),
+    ('醸', '釀'),
+    ('釈', '釋'),
+    ('鉄', '鐵'),
+    ('鉱', '鑛'),
+    ('銭', '錢'),
+    ('鋭', '銳'),
+    ('鋳', '鑄'),
+    ('錬', '鍊'),
+    ('録', '錄'),
+    ('鎮', '鎭'),
+    ('関', '關'),
+    ('闘', '鬪'),
+    ('陥', '陷'),
+    ('険', '險'),
+    ('随', '隨'),
+    ('隠', '隱'),
+    ('隣', '鄰'),
+    ('隷', '隸'),
+    ('雑', '雜'),
+    ('霊', '靈'),
+    ('青', '靑'),
+    ('静', '靜'),
+    ('頼', '賴'),
+    ('顔', '顏'),
+    ('顕', '顯'),
+    ('飲', '飮'),
+    ('餅', '餠'),
+    ('駅', '驛'),
+    ('駆', '驅'),
+    ('騒', '騷'),
+    ('験', '驗'),
+    ('髄', '髓'),
+    ('髪', '髮'),
+    ('竜', '龍'),
+    ('鶏', '鷄'),
+    ('麦', '麥'),
+    ('黄', '黃'),
+    ('黒', '黑'),
+    ('黙', '默'),
+    ('斉', '齊'),
+    ('斎', '齋'),
+    ('歯', '齒'),
+    ('齢', '齡'),
+    ('亀', '龜'),
+    ('告', '吿'),
+    ('屡', '屢'),
+    ('湾', '灣'),
+    ('亘', '亙'),
+    ('凜', '凛'),
+    ('刃', '刄'),
+    ('呉', '吳'),
+    ('回', '囘'),
+    ('妊', '姙'),
+    ('娯', '娛'),
+    ('強', '强'),
+    ('携', '攜'),
+    ('曽', '曾'),
+    ('歳', '歲'),
+    ('粘', '黏'),
+    ('糾', '糺'),
+    ('絶', '絕'),
+    ('萌', '萠'),
+    ('説', '說'),
+    ('祷', '禱'),
+    ('鎌', '鐮'),
+    ('閲', '閱'),
+    ('麺', '麵'),
+    ('祢', '禰'),
+];
+
+pub trait Kyujitai {
+    fn to_kyujitai(&self) -> String;
+    fn to_shinjitai(&self) -> String;
+}
+
+impl Kyujitai for String {
+    fn to_kyujitai(&self) -> String {
+        let mut output = String::with_capacity(self.len());
+        'outer: for shinjitai in self.chars() {
+            for (other_shinjitai, kyujitai) in KYUJITAI {
+                if shinjitai == *other_shinjitai {
+                    output.push(kyujitai.clone());
+                    continue 'outer;
+                }
+            }
+            output.push(shinjitai.clone());
+        }
+        output
+    }
+
+    fn to_shinjitai(&self) -> String {
+        let mut output = String::with_capacity(self.len());
+        'outer: for kyujitai in self.chars() {
+            for (shinjitai, other_kyujitai) in KYUJITAI {
+                if kyujitai == *other_kyujitai {
+                    output.push(shinjitai.clone());
+                    continue 'outer;
+                }
+            }
+            output.push(kyujitai.clone());
+        }
+        output
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 27e87f2..419e87e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,6 +10,8 @@ use sass_rocket_fairing::SassFairing;
 mod challenge;
 use challenge::Challenge;
 
+mod kyujitai;
+
 #[get("/<challenge>")]
 fn get_challenge(challenge: u32) -> Template {
     Template::render(
diff --git a/templates/index.html.tera b/templates/index.html.tera
index fdce29a..698106b 100644
--- a/templates/index.html.tera
+++ b/templates/index.html.tera
@@ -9,6 +9,18 @@
     <a href="/{{ challenge - 1 }}">Previous</a>
     <a href="/{{ challenge + 1 }}">Next</a>
     <div lang="ja">
+        <script>
+            let kyujitai = false;
+            function kyujitaiToggle() {
+                document.querySelectorAll("[data-kyujitai]").forEach(segment => {
+                    let newText = segment.getAttribute("data-kyujitai");
+                    segment.setAttribute("data-kyujitai", segment.firstChild.data);
+                    segment.firstChild.data = newText;
+                })
+                kyujitai = !kyujitai;
+            }
+        </script>
+        <button onclick="kyujitaiToggle(); this.innerHTML = kyujitai ? '新字体' : '旧字体'"">旧字体</button>
         {% for line in content.japanese %}
             {% for subline in line %}
                 <p>
@@ -17,7 +29,8 @@
                             <a href="{{ word.dictionary }}" target="_blank"{% if word.pos %} class="{{ word.pos }}" title="{{ word.pos }}"{% endif %}>
                         {% endif %}
                         {% for segment in word.text %}
-                            <ruby>{{ segment.kanji }}<rp>(</rp><rt>{{ segment.furigana | safe }}</rt><rp>)</rp></ruby>
+                            <!-- TODO: Don't use ruby for all segments -->
+                            <ruby{% if segment.kyujitai %} data-kyujitai="{{ segment.kyujitai }}"{% endif %}>{{ segment.kanji }}<rp>(</rp><rt>{{ segment.furigana | safe }}</rt><rp>)</rp></ruby>
                         {% endfor %}
                         {% if word.dictionary %}
                             </a>