From 57aa0410062f123f459faa4870ede5bea62f0bf2 Mon Sep 17 00:00:00 2001
From: AOKI Yuto <aoki@u-ne.co>
Date: Fri, 5 Jul 2024 00:48:25 +0900
Subject: [PATCH] export

---
 build.ts      | 22 +++++++++++++++
 lib/define.js | 75 +++++++++++++++++++++++++++++++--------------------
 lib/format.js | 34 ++++++++++++++---------
 3 files changed, 89 insertions(+), 42 deletions(-)

diff --git a/build.ts b/build.ts
index 2eeb060..03d7ed1 100644
--- a/build.ts
+++ b/build.ts
@@ -46,6 +46,28 @@ const files = [
             .replace(/export \{[^}]+\};$/m, '')
             .trim(),
     ],
+    [
+        'lib/define.js',
+        (
+            await (
+                await Bun.build({
+                    entrypoints: ['define.ts'],
+                    minify: false,
+                })
+            ).outputs[0].text()
+        )
+    ],
+    [
+        'lib/format.js',
+        (
+            await (
+                await Bun.build({
+                    entrypoints: ['format.ts'],
+                    minify: false,
+                })
+            ).outputs[0].text()
+        )
+    ],
     [
         'lib/index.js',
         (
diff --git a/lib/define.js b/lib/define.js
index 2fa3dce..fc9084c 100644
--- a/lib/define.js
+++ b/lib/define.js
@@ -1,33 +1,50 @@
-function defineID(s) {
-  const i = [];
-  for (let r = 0;r < s.format.length; r++) {
-    const t = s.format[r], n = t.characters.split(""), e = t.repeats || 1;
-    for (let o = 0;o < e; o++)
-      i.push(n);
+// define.ts
+function defineID(options) {
+  const sequence = [];
+  for (let i = 0;i < options.format.length; i++) {
+    const f = options.format[i];
+    const chars = f.characters.split("");
+    const repeats = f.repeats || 1;
+    for (let j = 0;j < repeats; j++) {
+      sequence.push(chars);
+    }
   }
-  const a = () => {
-    return s.format.map((r) => {
-      return r.characters.length ** (r.repeats || 1);
-    }).reduce((r, t) => r * t, 1);
-  }, c = i.map((r, t) => i.slice(t).reduce((n, e) => n * e.length, 1));
-  return { n: a, stringify: (r) => {
-    if (r < 0)
+  const n = () => {
+    return options.format.map((p) => {
+      return p.characters.length ** (p.repeats || 1);
+    }).reduce((a, b) => a * b, 1);
+  };
+  const orders = sequence.map((_, i) => sequence.slice(i).reduce((a, b) => a * b.length, 1));
+  const stringify = (num) => {
+    if (num < 0) {
       throw new Error("negative number is not acceptable.");
-    if (a() < r + 1)
-      throw new Error(`number of ids exceeded. number of available ids = ${a()}`);
-    return c.map((n, e) => Math.floor(Number(r % n / (c[e + 1] || 1)))).map((n, e) => i[e][n]).join("");
-  }, parse: (r) => {
-    if (r.length !== i.length)
+    }
+    if (n() < num + 1) {
+      throw new Error(`number of ids exceeded. number of available ids = ${n()}`);
+    }
+    const digits = orders.map((o, i) => Math.floor(Number(num % o / (orders[i + 1] || 1))));
+    return digits.map((d, i) => sequence[i][d]).join("");
+  };
+  const parse = (id) => {
+    if (id.length !== sequence.length) {
       throw new Error("invalid id length.");
-    let t;
-    const n = r.split("").map((e, o) => {
-      const f = i[o], m = f.indexOf(e);
-      if (m < 0)
-        t = new Error(`invalid id. '${e}' (index = ${o}) is not acceptable in [${f.join(", ")}].`);
-      return m * (c[o + 1] || 1);
+    }
+    let error;
+    const digits = id.split("").map((c, i) => {
+      const pattern = sequence[i];
+      const n2 = pattern.indexOf(c);
+      if (n2 < 0) {
+        error = new Error(`invalid id. '${c}' (index = ${i}) is not acceptable in [${pattern.join(", ")}].`);
+      }
+      return n2 * (orders[i + 1] || 1);
     });
-    if (t)
-      throw t;
-    return n.reduce((e, o) => e + o, 0);
-  } };
-}
\ No newline at end of file
+    if (error) {
+      throw error;
+    }
+    return digits.reduce((total, n2) => total + n2, 0);
+  };
+  return { n, stringify, parse };
+}
+export {
+  defineID
+};
diff --git a/lib/format.js b/lib/format.js
index 583fed2..1ea63ee 100644
--- a/lib/format.js
+++ b/lib/format.js
@@ -1,17 +1,25 @@
-function createFormat(n, c, o) {
-  const t = n.split("").map((r) => {
+// format.ts
+function createFormat(template, definitions, compress) {
+  const format = template.split("").map((f) => {
     return {
-      characters: c[r] || r
+      characters: definitions[f] || f
     };
   });
-  if (!o)
-    return t;
-  return t.reduceRight((r, e) => {
-    const a = r[0];
-    if (r.length > 0 && a.characters === e.characters)
-      return r[0] = Object.assign({}, e, {
-        repeats: (e.repeats || 1) + (a.repeats || 1)
-      }), r;
-    return r.unshift(e), r;
+  if (!compress) {
+    return format;
+  }
+  return format.reduceRight((list, pattern) => {
+    const head = list[0];
+    if (list.length > 0 && head.characters === pattern.characters) {
+      list[0] = Object.assign({}, pattern, {
+        repeats: (pattern.repeats || 1) + (head.repeats || 1)
+      });
+      return list;
+    }
+    list.unshift(pattern);
+    return list;
   }, []);
-}
\ No newline at end of file
+}
+export {
+  createFormat
+};