From ec3c251db0aff2beefdc15eb745f27792c253aba Mon Sep 17 00:00:00 2001
From: sergeyp <sergey.paramonov@info-guild.ru>
Date: Fri, 22 May 2020 20:03:37 +0300
Subject: [PATCH] Node js version

Inspired by C# version of komrad MblSH
---
 bench.py      |  1 +
 src/freq01.js | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 src/freq01.js

diff --git a/bench.py b/bench.py
index 0841030..ab2a527 100755
--- a/bench.py
+++ b/bench.py
@@ -18,6 +18,7 @@ def run1(args, src_name, num_runs):
 runs = [
 	[['java', '-jar', './bin/freq01scala.jar'], 'freq01.scala', 3],
 	[['python', './src/freq01.py'], 'freq01.py', 3],
+	[['node', './src/freq01.js'], 'freq01.js', 3],
 	[['./bin/freq03cpp' + EXE], 'freq03.cpp'],
 	[['./bin/freq02cpp' + EXE], 'freq02.cpp'],
 	[['./bin/freq01cpp' + EXE], 'freq01.cpp'],
diff --git a/src/freq01.js b/src/freq01.js
new file mode 100644
index 0000000..d198b9b
--- /dev/null
+++ b/src/freq01.js
@@ -0,0 +1,69 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const fs = require("fs");
+const dict = new Map();
+function addWord(word) {
+    const val = dict.get(word);
+    if (val)
+        dict.set(word, val + 1);
+    else
+        dict.set(word, 1);
+}
+function isLetter(code) {
+    return code > 64 && code < 91
+        || code > 96 && code < 123;
+}
+function writeFile(filePath) {
+    const fstream = fs.createWriteStream(filePath);
+    const out = Array.from(dict.entries()).sort((kv1, kv2) => {
+        if (kv1[1] < kv2[1]) {
+            return 1;
+        }
+        else if (kv1[1] == kv2[1]) {
+            return kv1[0] > kv2[0] ? 1 : -1;
+        }
+        else {
+            return -1;
+        }
+    });
+    try {
+        for (let i = 0; i < out.length; i++) {
+            fstream.write(out[i][1] + " " + out[i][0] + "\n");
+        }
+    }
+    finally {
+        fstream.close();
+    }
+}
+function main(args) {
+    if (args.length != 4)
+        return;
+    const start = (new Date()).getTime();
+    let word = "";
+    const stream = fs.createReadStream(args[2]);
+    stream.on('readable', () => {
+        let data;
+        while (null !== (data = stream.read())) {
+            for (let i = 0; i < data.length; i++) {
+                const ch = data[i];
+                if (isLetter(ch)) {
+                    word += String.fromCharCode(ch);
+                    ;
+                    continue;
+                }
+                if (word.length == 0)
+                    continue;
+                addWord(word.toLowerCase());
+                word = "";
+            }
+        }
+    });
+    stream.on('end', () => {
+        if (word.length > 0)
+            addWord(word.toLowerCase());
+        writeFile(args[3]);
+        console.log(`Time ${(new Date()).getTime() - start} ms`);
+    });
+}
+main(process.argv);
+//# sourceMappingURL=app.js.map
\ No newline at end of file