Editing Openai/696cd9fb-2df0-8000-a290-b183d83ee619


{{DISPLAYTITLE:Unicode Preeti Converter Guide}}

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== gpt-5-2 ==
=== User: I need to build translator to translate unicode to preeti and preeti to unicode using html js tailwind. ===
I need to build translator to translate unicode to preeti and preeti to unicode using html js tailwind.

But i don't know how to build this translator, please guide me if you know.

=== Assistant: You’re basically building a font-encoding converter, not a language translator. ===
You’re basically building a font-encoding converter, not a language translator.

Unicode Nepali (Devanagari) and Preeti are different at a character-encoding level:
* Unicode = proper Devanagari characters (क, ख, ग…)
* Preeti = legacy font where Latin keys map to Nepali glyphs (e.g. s → क, ; → ह, etc.)

So the solution is character mapping + text processing in JavaScript.

==== 1️⃣ Core idea (important) ====

You need two mapping tables:
# Unicode → Preeti
# Preeti → Unicode

Then:
* Read input text
* Replace characters (longest patterns first)
* Output converted text

==== 2️⃣ Character mapping (example) ====

: ⚠️ This is just a partial mapping to explain the concept.
: A full mapping table is required for production (I’ll explain where to get it).

===== Unicode → Preeti (sample) =====

<syntaxhighlight lang="js">const unicodeToPreeti = {
  "क": "s",
  "ख": "v",
  "ग": "u",
  "घ": "3",
  "ङ": "ª",
  "च": "r",
  "छ": "5",
  "ज": "h",
  "झ": "´",
  "ट": "6",
  "ठ": "7",
  "ड": "8",
  "ढ": "9",
  "ण": "0",
  "त": "t",
  "थ": "y",
  "द": "b",
  "ध": "w",
  "न": "g",
  "प": "k",
  "फ": "a",
  "ब": "d",
  "भ": "e",
  "म": "d",
  "य": "o",
  "र": "/",
  "ल": "n",
  "व": "j",
  "श": "z",
  "ष": "i",
  "स": ";",
  "ह": "x"
};

</syntaxhighlight>

===== Preeti → Unicode (reverse map) =====

<syntaxhighlight lang="js">const preetiToUnicode = {};
for (const key in unicodeToPreeti) {
  preetiToUnicode[unicodeToPreeti[key]] = key;
}

</syntaxhighlight>

==== 3️⃣ Conversion logic (JavaScript) ====

===== Unicode → Preeti =====

<syntaxhighlight lang="js">function convertUnicodeToPreeti(text) {
  let result = "";
  for (let char of text) {
    result += unicodeToPreeti[char] || char;
  }
  return result;
}

</syntaxhighlight>

===== Preeti → Unicode =====

<syntaxhighlight lang="js">function convertPreetiToUnicode(text) {
  let result = "";
  for (let char of text) {
    result += preetiToUnicode[char] || char;
  }
  return result;
}

</syntaxhighlight>

==== 4️⃣ HTML + Tailwind UI ====

<syntaxhighlight lang="html"><!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <script src="https://cdn.tailwindcss.com"></script>
</head>
<body class="bg-gray-100 p-6">

  <div class="max-w-xl mx-auto bg-white p-6 rounded shadow">
    <h1 class="text-xl font-bold mb-4">Unicode ↔ Preeti Converter</h1>

    <textarea id="input" class="w-full border p-2 mb-4" rows="4"
      placeholder="Enter text..."></textarea>

    <div class="flex gap-2 mb-4">
      <button onclick="toPreeti()" class="bg-blue-500 text-white px-4 py-2 rounded">
        Unicode → Preeti
      </button>
      <button onclick="toUnicode()" class="bg-green-500 text-white px-4 py-2 rounded">
        Preeti → Unicode
      </button>
    </div>

    <textarea id="output" class="w-full border p-2" rows="4"
      placeholder="Result..."></textarea>
  </div>

<script>
  // mappings here
</script>

</body>
</html>

</syntaxhighlight>

<syntaxhighlight lang="js">function toPreeti() {
  const text = document.getElementById("input").value;
  document.getElementById("output").value = convertUnicodeToPreeti(text);
}

function toUnicode() {
  const text = document.getElementById("input").value;
  document.getElementById("output").value = convertPreetiToUnicode(text);
}

</syntaxhighlight>

==== 5️⃣ IMPORTANT: Real-world issues you must handle ====

===== 1. Matras & combined characters =====

Unicode has:
* कि, की, कु, क्त, क्ष, ज्ञ, etc.

These require multi-character replacements, not single characters.

➡️ Solution:
* Replace longest patterns first
* Use regex replacement instead of char-by-char

Example:

<syntaxhighlight lang="js">const unicodePatterns = [
  ["क्ष", "If"],
  ["ज्ञ", "1"],
  ["कि", "ls"],
  ["की", "lL"],
];

</syntaxhighlight>

===== 2. Full mapping table =====

You should not create this manually.

You can:
* Extract mapping from: - Old Nepali typing tools - Existing open-source converters
* Or I can generate a complete mapping JSON for you

==== 6️⃣ Recommended architecture ====

<syntaxhighlight>/src
 ├── index.html
 ├── mappings/
 │    ├── unicodeToPreeti.js
 │    └── preetiToUnicode.js
 ├── converter.js

</syntaxhighlight>

==== 7️⃣ If you want next steps ====

I can:
* ✅ Generate complete Preeti ↔ Unicode mapping
* ✅ Handle matras & conjuncts correctly
* ✅ Convert this into React / Next.js
* ✅ Optimize conversion accuracy (like Google Input Tools)
* ✅ Make it work offline

👉 Tell me how advanced you want this:
* Basic school project
* Production-level Nepali converter
* Mobile-friendly PWA
* API-based service

== References ==
<references />


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