Implement interface adapter: fs to Map

tshemsedinov · tshemsedinov · commit 800aa1e045cb · 2018-11-04T18:12:41.000+02:00
diff --git a/JavaScript/6-interface.js b/JavaScript/6-interface.js
@@ -0,0 +1,55 @@
+'use strict';
+
+// Interface adapter: fs to Map
+
+class HashMap {
+  constructor(fs, path) {
+    this.fs = fs;
+    this.path = path;
+    fs.mkdirSync(path);
+  }
+  set(key, value) {
+    this.fs.writeFileSync(this.path + key, JSON.stringify(value), 'utf8');
+  }
+  get(key) {
+    return JSON.parse(this.fs.readFileSync(this.path + key, 'utf8'));
+  }
+  has(key) {
+    return this.fs.existsSync(this.path + key);
+  }
+  delete(key) {
+    this.fs.unlinkSync(this.path + key);
+  }
+  get size() {
+    return this.keys().length;
+  }
+  keys() {
+    return this.fs.readdirSync(this.path);
+  }
+  clear() {
+    this.keys().forEach(file => {
+      this.delete(file);
+    });
+  }
+}
+
+// Usage
+
+const fs = require('fs');
+const dict = new HashMap(fs, './data/');
+dict.set('name', 'Marcus');
+dict.set('born', '121-04-26');
+dict.set('city', 'Roma');
+dict.set('position', 'Emperor');
+dict.delete('city');
+console.dir({
+  name: dict.get('name'),
+  size: dict.size,
+  has: {
+    name: dict.has('name'),
+    city: dict.has('city'),
+  },
+  keys: dict.get('name'),
+});
+
+dict.clear();
diff --git a/README.md b/README.md
@@ -1,2 +1 @@
-# Adapter
-Pattern Adapter Implementations
+# Pattern Adapter Implementations

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1 @@`
`1`		`-# Adapter`
`2`		`-Pattern Adapter Implementations`
	`1`	`+# Pattern Adapter Implementations`