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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Ethio-Intl Library Demo</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism-dark.min.css" id="prism-dark-theme">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
line-height: 1.6;
color: var(--text-primary);
background: var(--bg-primary);
transition: background-color 0.3s ease, color 0.3s ease;
}
.container {
max-width: 1400px;
margin: 0 auto;
padding: 20px;
}
:root {
/* Light theme variables */
--bg-primary: #f8f9fa;
--bg-secondary: white;
--bg-tertiary: #f8f9fa;
--text-primary: #2c3e50;
--text-secondary: #666;
--accent-primary: #667eea;
--accent-secondary: #764ba2;
--border-color: #e1e8ed;
--shadow-color: rgba(0,0,0,0.1);
--code-bg: #2d3748;
--code-text: #e2e8f0;
--header-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
--button-hover: #f0f0f0;
--input-focus: #667eea;
}
[data-theme="dark"] {
/* Dark theme variables */
--bg-primary: #1a202c;
--bg-secondary: #2d3748;
--bg-tertiary: #2d3748;
--text-primary: #e2e8f0;
--text-secondary: #a0aec0;
--accent-primary: #63b3ed;
--accent-secondary: #4299e1;
--border-color: #4a5568;
--shadow-color: rgba(0,0,0,0.3);
--code-bg: #1a202c;
--code-text: #e2e8f0;
--header-gradient: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
--button-hover: #4a5568;
--input-focus: #63b3ed;
}
.header {
text-align: center;
padding: 40px 20px;
background: var(--header-gradient);
color: white;
border-radius: 12px;
margin-bottom: 30px;
position: relative;
}
.header h1 {
font-size: 2.5rem;
margin-bottom: 10px;
font-weight: 300;
}
.header p {
font-size: 1.1rem;
opacity: 0.9;
}
.theme-toggle {
position: absolute;
top: 20px;
right: 20px;
background: rgba(255, 255, 255, 0.2);
border: none;
border-radius: 50%;
width: 40px;
height: 40px;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
transition: all 0.3s ease;
font-size: 18px;
}
.theme-toggle:hover {
background: rgba(255, 255, 255, 0.3);
transform: scale(1.1);
}
.nav-tabs {
display: flex;
justify-content: center;
margin-bottom: 30px;
background: var(--bg-secondary);
border-radius: 8px;
padding: 5px;
box-shadow: 0 2px 10px var(--shadow-color);
transition: background-color 0.3s ease;
}
.nav-btn {
padding: 12px 24px;
border: none;
background: transparent;
color: var(--text-secondary);
cursor: pointer;
border-radius: 6px;
font-weight: 500;
transition: all 0.3s;
}
.nav-btn.active {
background: var(--accent-primary);
color: white;
box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}
.nav-btn:hover:not(.active) {
background: var(--button-hover);
}
.section {
display: none;
background: var(--bg-secondary);
border-radius: 12px;
padding: 30px;
box-shadow: 0 4px 20px var(--shadow-color);
margin-bottom: 30px;
transition: background-color 0.3s ease;
}
.section.active {
display: block;
}
.section h2 {
color: var(--text-primary);
margin-bottom: 20px;
font-size: 1.8rem;
border-bottom: 2px solid var(--accent-primary);
padding-bottom: 10px;
}
.demo-content {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 40px;
align-items: start;
}
@media (max-width: 768px) {
.demo-content {
grid-template-columns: 1fr;
}
}
.demo-panel {
background: var(--bg-tertiary);
border-radius: 8px;
padding: 25px;
transition: background-color 0.3s ease;
}
.input-group {
margin-bottom: 20px;
}
.input-label {
display: block;
margin-bottom: 8px;
font-weight: 600;
color: var(--text-primary);
font-size: 14px;
}
.demo-input {
width: 100%;
padding: 12px;
border: 2px solid var(--border-color);
border-radius: 8px;
font-size: 16px;
transition: border-color 0.3s;
background: var(--bg-secondary);
color: var(--text-primary);
}
.demo-input:focus {
outline: none;
border-color: var(--input-focus);
}
.demo-output {
background: var(--bg-secondary);
border: 2px solid var(--border-color);
border-radius: 8px;
padding: 12px;
font-family: monospace;
font-size: 16px;
min-height: 44px;
word-break: break-all;
color: var(--text-primary);
transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.button-group {
display: flex;
gap: 8px;
flex-wrap: wrap;
margin: 15px 0;
}
.btn {
padding: 8px 16px;
border: none;
border-radius: 6px;
cursor: pointer;
font-size: 14px;
font-weight: 500;
transition: all 0.3s;
}
.btn.primary {
background: var(--accent-primary);
color: white;
}
.btn.primary:hover {
background: var(--accent-secondary);
}
.btn.secondary {
background: #6c757d;
color: white;
}
.btn.secondary:hover {
background: #5a6268;
}
.language-buttons {
display: flex;
gap: 10px;
margin: 15px 0;
}
.lang-btn {
padding: 8px 16px;
border: 2px solid var(--accent-primary);
background: var(--bg-secondary);
color: var(--accent-primary);
border-radius: 6px;
cursor: pointer;
font-weight: 500;
transition: all 0.3s;
}
.lang-btn.active {
background: var(--accent-primary);
color: white;
}
.code-panel {
background: var(--code-bg);
color: var(--code-text);
border-radius: 8px;
padding: 25px;
font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
font-size: 14px;
line-height: 1.5;
overflow-x: auto;
transition: background-color 0.3s ease, color 0.3s ease;
}
.code-panel h3 {
color: var(--accent-primary);
margin-bottom: 15px;
font-size: 16px;
}
.code-panel pre {
margin: 0;
white-space: pre-wrap;
}
.code-panel {
position: relative;
}
.copy-btn {
position: absolute;
top: 15px;
right: 15px;
background: rgba(255, 255, 255, 0.9);
border: 1px solid var(--border-color);
border-radius: 6px;
padding: 6px 10px;
cursor: pointer;
font-size: 12px;
font-weight: 500;
color: var(--text-primary);
display: flex;
align-items: center;
gap: 4px;
transition: all 0.3s ease;
z-index: 10;
}
.copy-btn:hover {
background: var(--bg-secondary);
transform: translateY(-1px);
box-shadow: 0 2px 8px var(--shadow-color);
}
.copy-btn.copied {
background: #10b981;
color: white;
border-color: #10b981;
}
.copy-btn.copied::before {
content: "✓";
font-weight: bold;
}
.copy-btn::before {
content: "📋";
}
[data-theme="dark"] .copy-btn {
background: rgba(45, 55, 72, 0.9);
color: var(--code-text);
border-color: var(--border-color);
}
[data-theme="dark"] .copy-btn:hover {
background: var(--bg-secondary);
}
.feature-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 20px;
margin: 30px 0;
}
.feature-card {
background: var(--bg-secondary);
border-radius: 8px;
padding: 20px;
box-shadow: 0 2px 10px var(--shadow-color);
border-left: 4px solid var(--accent-primary);
transition: background-color 0.3s ease;
}
.feature-card h3 {
color: var(--text-primary);
margin-bottom: 10px;
font-size: 1.2rem;
}
.feature-card p {
color: var(--text-secondary);
margin-bottom: 15px;
}
.feature-icon {
font-size: 2rem;
margin-bottom: 10px;
}
footer {
text-align: center;
padding: 30px;
color: var(--text-secondary);
border-top: 1px solid var(--border-color);
margin-top: 50px;
transition: color 0.3s ease, border-color 0.3s ease;
}
.tip {
background: rgba(99, 179, 237, 0.1);
border: 1px solid rgba(99, 179, 237, 0.3);
border-radius: 6px;
padding: 12px;
margin: 15px 0;
font-size: 14px;
color: var(--accent-primary);
transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
.tip strong {
color: var(--accent-secondary);
}
</style>
</head>
<body>
<div class="container">
<div class="header">
<button class="theme-toggle" id="theme-toggle" title="Toggle Dark Mode">
🌙
</button>
<h1>🌍 Ethio-Intl</h1>
<p>Modern Ethiopian internationalization library with Amharic transliteration, Ethiopian calendar, Geez numerals, and multi-language support</p>
</div>
<div class="nav-tabs">
<button class="nav-btn active" onclick="showTab('transliteration')">🔤 Transliteration</button>
<button class="nav-btn" onclick="showTab('calendar')">📅 Calendar</button>
<button class="nav-btn" onclick="showTab('numerals')">🔢 Geez Numerals</button>
<button class="nav-btn" onclick="showTab('multilang')">🌐 Multi-language</button>
<button class="nav-btn" onclick="showTab('features')">✨ Features</button>
</div>
<!-- Transliteration Section -->
<div id="transliteration-section" class="section active">
<h2>🔤 Amharic Transliteration</h2>
<div class="demo-content">
<div class="demo-panel">
<div class="input-group">
<label class="input-label">Type in English:</label>
<input type="text" id="transliterate-input" class="demo-input" placeholder="Try: selam, hu, ba, te, ka..." />
</div>
<div class="input-group">
<label class="input-label">Amharic output:</label>
<div class="demo-output" id="transliterate-output">እንኳን ደህና መጡ!</div>
</div>
<div class="button-group">
<button class="btn primary" onclick="insertText('selam')">selam</button>
<button class="btn primary" onclick="insertText('hu')">hu</button>
<button class="btn primary" onclick="insertText('ba')">ba</button>
<button class="btn primary" onclick="insertText('te')">te</button>
<button class="btn primary" onclick="insertText('ka')">ka</button>
<button class="btn primary" onclick="insertText('ne dehna')">ne dehna</button>
<button class="btn secondary" onclick="clearText()">Clear</button>
</div>
<div class="tip">
<strong>Tip:</strong> Use 'e' for ä forms (ሀ), 'ee' for regular e forms (ሄ). Example: "he" → ሀ, "hee" → ሄ
</div>
</div>
<div class="code-panel">
<button class="copy-btn" onclick="copyCode(this)">Copy</button>
<h3>Real-time Transliteration</h3>
<pre><code class="language-javascript">import { useTransliterate } from 'ethio-intl';
// In your React component
function MyComponent() {
const [text, setText] = useState('');
const translated = useTransliterate(text);
return (
<input
value={text}
onChange={(e) => setText(e.target.value)}
placeholder="Type in English..."
/>
<p>{translated}</p>
);
}</code></pre>
</div>
</div>
</div>
<!-- Calendar Section -->
<div id="calendar-section" class="section">
<h2>📅 Ethiopian Calendar</h2>
<div class="demo-content">
<div class="demo-panel">
<div class="input-group">
<label class="input-label">Gregorian date:</label>
<input type="date" id="gregorian-date" class="demo-input" />
</div>
<div class="language-buttons">
<button class="lang-btn active" onclick="convertEthiopianDate('en')">🇺🇸 English</button>
<button class="lang-btn" onclick="convertEthiopianDate('am')">🇪🇹 አማርኛ</button>
</div>
<div class="input-group">
<label class="input-label">Ethiopian date:</label>
<div class="demo-output" id="ethiopian-date"></div>
</div>
<div class="tip">
<strong>Technical:</strong> Uses precise astronomical calculations with Julian Day Number algorithm for accurate Gregorian ↔ Ethiopian conversion.
</div>
</div>
<div class="code-panel">
<button class="copy-btn" onclick="copyCode(this)">Copy</button>
<h3>Calendar Conversion</h3>
<pre><code class="language-javascript">import { toEthDate } from 'ethio-intl';
// Convert Gregorian to Ethiopian
const today = new Date();
const ethDate = toEthDate(today, 'en');
// Result: "Tahsas 13, 2018"
const ethDateAmharic = toEthDate(today, 'am');
// Result: "ታህሳስ 13, 2018"
// Handle leap years automatically
const leapYear = new Date(2024, 8, 11);
const ethLeap = toEthDate(leapYear);
// Result: "Meskerem 1, 2017" (note: 7-8 year offset)</code></pre>
</div>
</div>
</div>
<!-- Numerals Section -->
<div id="numerals-section" class="section">
<h2>🔢 Geez Numerals</h2>
<div class="demo-content">
<div class="demo-panel">
<div class="input-group">
<label class="input-label">Arabic number:</label>
<input type="number" id="arabic-number" class="demo-input" placeholder="Enter number (1-1,000,000)" min="1" max="1000000" value="2025" />
</div>
<div class="input-group">
<label class="input-label">Geez numeral:</label>
<div class="demo-output" id="geez-number"></div>
</div>
<div class="button-group">
<button class="btn primary" onclick="convertToGeez(1)">1</button>
<button class="btn primary" onclick="convertToGeez(10)">10</button>
<button class="btn primary" onclick="convertToGeez(100)">100</button>
<button class="btn primary" onclick="convertToGeez(1000)">1000</button>
<button class="btn primary" onclick="convertToGeez(10000)">10000</button>
<button class="btn primary" onclick="convertToGeez(2025)">2025</button>
<button class="btn secondary" onclick="convertToGeezFromInput()">Convert</button>
</div>
<div class="tip">
<strong>Traditional System:</strong> Geez numerals use ፩(1), ፲(10), ፻(100), ፼(10,000). Note the special rules for 100 and 10,000 (no '1' multiplier).
</div>
</div>
<div class="code-panel">
<button class="copy-btn" onclick="copyCode(this)">Copy</button>
<h3>Numeral Conversion</h3>
<pre><code class="language-javascript">import { toEthNumber, fromEthNumber } from 'ethio-intl';
// Arabic to Geez
const geez = toEthNumber(2025);
// Result: "፳፻፳፭"
const geez100 = toEthNumber(100);
// Result: "፻" (note: no '1' multiplier)
const geez10000 = toEthNumber(10000);
// Result: "፼" (note: no '1' multiplier)
// Geez to Arabic
const arabic = fromEthNumber('፳፻፳፭');
// Result: 2025</code></pre>
</div>
</div>
</div>
<!-- Multi-language Support Section -->
<div id="multilang-section" class="section">
<h2>🌐 Multi-language Support</h2>
<div class="demo-content">
<div class="demo-panel">
<div class="language-buttons" style="margin-bottom: 20px;">
<button class="lang-btn active" onclick="switchLanguage('en')">🇺🇸 English</button>
<button class="lang-btn" onclick="switchLanguage('am')">🇪🇹 አማርኛ</button>
<button class="lang-btn" onclick="switchLanguage('ti')">🇪🇷 ትግርኛ</button>
<button class="lang-btn" onclick="switchLanguage('om')">🇪🇹 ኦሮሚኛ</button>
</div>
<div class="input-group">
<label class="input-label">Welcome Message:</label>
<div class="demo-output" id="welcome-msg"></div>
</div>
<div class="input-group">
<label class="input-label">Description:</label>
<div class="demo-output" id="description-msg"></div>
</div>
<div class="input-group">
<label class="input-label">User Count (with interpolation):</label>
<div class="demo-output" id="user-count-msg"></div>
</div>
<div class="input-group">
<label class="input-label">Advanced Features:</label>
<div class="demo-output" id="advanced-header"></div>
</div>
<div class="input-group">
<label class="input-label">Subtitle:</label>
<div class="demo-output" id="advanced-subtitle"></div>
</div>
<div class="tip">
<strong>Variable Interpolation:</strong> Notice how {count} gets replaced with "1,234" automatically. Namespaced translations allow organizing translations by feature/page.
</div>
</div>
<div class="code-panel">
<button class="copy-btn" onclick="copyCode(this)">Copy</button>
<h3>React Context API Integration</h3>
<pre><code class="language-javascript">// 1. Set up translations
const translations = {
en: {
translation: {
welcome: 'Welcome to Ethio-Intl!',
userCount: 'We have {count} users',
namespaced: { header: 'Advanced Features' }
}
},
am: {
translation: {
welcome: 'እንኳን ደህና መጡ ወደ ኢትዮ-ኢንትል!',
userCount: '{count} ተጠቃሚዎች አሉን',
namespaced: { header: 'የላቀ ባህሪያት' }
}
}
};
// 2. Wrap your app
function App() {
return (
<EthioProvider
resources={translations}
defaultLang="am"
fallbackLang="en"
>
<YourComponents />
</EthioProvider>
);
}
// 3. Use in components
function MyComponent() {
const { t, tNamespace, changeLanguage, currentLang } = useEthioIntl();
return (
<div>
<h1>{t('welcome')}</h1>
<p>{t('userCount', { count: '1,234' })}</p>
<p>{tNamespace('namespaced', 'header')}</p>
<button onClick={() => changeLanguage('am')}>
Switch to Amharic
</button>
</div>
);
}</code></pre>
</div>
</div>
</div>
<!-- Features Section -->
<div id="features-section" class="section">
<h2>✨ Key Features</h2>
<div class="feature-grid">
<div class="feature-card">
<div class="feature-icon">🔄</div>
<h3>Real-time Transliteration</h3>
<p>As you type English letters, they instantly become Amharic characters with smart combinations and cursor management.</p>
</div>
<div class="feature-card">
<div class="feature-icon">📅</div>
<h3>Astronomical Precision</h3>
<p>Uses Julian Day Number algorithm for mathematically precise Gregorian ↔ Ethiopian calendar conversion, accounting for leap years and the 7-8 year offset.</p>
</div>
<div class="feature-card">
<div class="feature-icon">🔢</div>
<h3>Traditional Geez Numerals</h3>
<p>Convert Arabic numbers to authentic Geez script with proper formatting rules, including special handling for hundreds and ten-thousands.</p>
</div>
<div class="feature-card">
<div class="feature-icon">🌐</div>
<h3>Multi-language Support</h3>
<p>Built-in internationalization with React Context API, supporting Amharic, English, Tigrinya, and Oromo with extensible architecture.</p>
</div>
<div class="feature-card">
<div class="feature-icon">⚡</div>
<h3>Zero Dependencies</h3>
<p>All calculations use pure TypeScript/Math - no external libraries required. Perfect for traditional Ethiopian web applications.</p>
</div>
<div class="feature-card">
<div class="feature-icon">🛠️</div>
<h3>Enterprise Ready</h3>
<p>Dynamic loading, namespaced translations, hot reloading, and development tools for large-scale applications.</p>
</div>
</div>
<div class="code-panel" style="margin-top: 30px;">
<button class="copy-btn" onclick="copyCode(this)">Copy</button>
<h3>Installation & Usage</h3>
<pre><code class="language-bash"># Install
npm install ethio-intl
# Import what you need
import { toEthDate, toEthNumber, useTransliterate, EthioProvider } from 'ethio-intl';
// Use in your app
function EthiopianApp() {
return (
<EthioProvider resources={translations} defaultLang="am">
<YourComponents />
</EthioProvider>
);
}</code></pre>
</div>
</div>
<footer>
<p>© 2025 Ethio-Intl. Empowering Ethiopian developers with modern internationalization tools.</p>
</footer>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/prism.min.js"></script>
<script>
// Amharic transliteration mapping (matches the actual library)
const amharicMap = {
"h": { ä: "ሀ", base: "ህ", "a": "ሃ", "u": "ሁ", "i": "ሂ", "e": "ሄ", "o": "ሆ" },
"l": { ä: "ለ", base: "ል", "a": "ላ", "u": "ሉ", "i": "ሊ", "e": "ሌ", "o": "ሎ", "wa": "ሏ" },
"m": { ä: "መ", base: "ም", "a": "ማ", "u": "ሙ", "i": "ሚ", "e": "ሜ", "o": "ሞ", "wa": "ሟ" },
"r": { ä: "ረ", base: "ር", "a": "ራ", "u": "ሩ", "i": "ሪ", "e": "ሬ", "o": "ሮ", "wa": "ሯ" },
"s": { ä: "ሰ", base: "ስ", "a": "ሳ", "u": "ሱ", "i": "ሲ", "e": "ሴ", "o": "ሶ", "wa": "ሷ" },
"b": { ä: "በ", base: "ብ", "a": "ባ", "u": "ቡ", "i": "ቢ", "e": "ቤ", "o": "ቦ", "wa": "ቧ" },
"t": { ä: "ተ", base: "ት", "a": "ታ", "u": "ቱ", "i": "ቲ", "e": "ቴ", "o": "ቶ", "wa": "ቷ" },
"n": { ä: "ነ", base: "ን", "a": "ና", "u": "ኑ", "i": "ኒ", "e": "ኔ", "o": "ኖ", "wa": "ኗ" },
"k": { ä: "ከ", base: "ክ", "a": "ካ", "u": "ኩ", "i": "ኪ", "e": "ኬ", "o": "ኮ", "wa": "ኳ", "w": "ኵ" },
"w": { ä: "ወ", base: "ው", "a": "ዋ", "u": "ዉ", "i": "ዊ", "e": "ዌ", "o": "ዎ" },
"z": { ä: "ዘ", base: "ዝ", "a": "ዛ", "u": "ዙ", "i": "ዚ", "e": "ዜ", "o": "ዞ", "wa": "ዟ" },
"y": { ä: "የ", base: "ይ", "a": "ያ", "u": "ዩ", "i": "ዪ", "e": "ዬ", "o": "ዮ" },
"d": { ä: "ደ", base: "ድ", "a": "ዳ", "u": "ዱ", "i": "ዲ", "e": "ዴ", "o": "ዶ", "wa": "ዷ" },
"j": { ä: "ጀ", base: "ጅ", "a": "ጃ", "u": "ጁ", "i": "ጂ", "e": "ጄ", "o": "ጆ", "wa": "ጇ" },
"g": { ä: "ገ", base: "ግ", "a": "ጋ", "u": "ጉ", "i": "ጊ", "e": "ጌ", "o": "ጎ", "wa": "ጓ", "w": "ጕ" },
"f": { ä: "ፈ", base: "ፍ", "a": "ፋ", "u": "ፉ", "i": "ፊ", "e": "ፌ", "o": "ፎ", "wa": "ፏ" },
"p": { ä: "ፐ", base: "ፕ", "a": "ፓ", "u": "ፑ", "i": "ፒ", "e": "ፔ", "o": "ፖ", "wa": "ፗ" },
"q": { ä: "ቀ", base: "ቅ", "a": "ቃ", "u": "ቁ", "i": "ቂ", "e": "ቄ", "o": "ቆ", "wa": "ቋ", "w": "ቍ" },
"x": { ä: "ኀ", base: "ኽ", "a": "ኻ", "u": "ኹ", "i": "ኺ", "e": "ኼ", "o": "ኾ", "wa": "ኋ", "w": "ኍ" },
"c": { ä: "ቸ", base: "ች", "a": "ቻ", "u": "ቹ", "i": "ቺ", "e": "ቼ", "o": "ቾ", "wa": "ቿ" },
"ch": { ä: "ቸ", base: "ች", "a": "ቻ", "u": "ቹ", "i": "ቺ", "e": "ቼ", "o": "ቾ" },
"sh": { ä: "ሸ", base: "ሽ", "a": "ሻ", "u": "ሹ", "i": "ሺ", "e": "ሼ", "o": "ሾ", "wa": "ሿ" },
"a": { ä: "አ", base: "አ" },
"e": { ä: "እ", base: "እ" },
"i": { ä: "ኢ", base: "ኢ" },
"o": { ä: "ኦ", base: "ኦ" },
"u": { ä: "ኡ", base: "ኡ" }
};
// Build reverse map for efficient lookups
const reverseMap = {};
Object.keys(amharicMap).forEach(consonant => {
const consonantData = amharicMap[consonant];
reverseMap[consonantData.base] = consonant;
Object.keys(consonantData).forEach(vowel => {
if (vowel !== 'base') {
reverseMap[consonantData[vowel]] = consonant;
}
});
});
// Gregorian leap year check
function isGregorianLeapYear(year) {
return (year % 4 === 0 && year % 100 !== 0) || (year % 400 === 0);
}
function getEthiopianNewYear(gregorianYear) {
const day = isGregorianLeapYear(gregorianYear) ? 12 : 11;
return new Date(Date.UTC(gregorianYear, 8, day, 12, 0, 0, 0));
}
function getEthiopianYear(gregorianDate) {
const gregorianYear = gregorianDate.getFullYear();
const newYearDate = getEthiopianNewYear(gregorianYear);
const normalizedDate = new Date(Date.UTC(gregorianDate.getFullYear(), gregorianDate.getMonth(), gregorianDate.getDate(), 12, 0, 0, 0));
if (normalizedDate < newYearDate) {
return gregorianYear - 8;
} else {
return gregorianYear - 7;
}
}
// Ethiopian leap year check
function isEthiopianLeapYear(ethiopianYear) {
return ethiopianYear % 4 === 3;
}
// Get Ethiopian New Year (Meskerem 1) date
function getEthiopianNewYear(gregorianYear) {
// Create date at noon UTC to avoid timezone issues
const day = isGregorianLeapYear(gregorianYear) ? 12 : 11;
return new Date(Date.UTC(gregorianYear, 8, day, 12, 0, 0, 0)); // September 11 or 12 at noon UTC
}
// Get Ethiopian year for a Gregorian date
function getEthiopianYear(gregorianDate) {
const gregorianYear = gregorianDate.getFullYear();
const newYearDate = getEthiopianNewYear(gregorianYear);
// Normalize both dates to noon UTC for accurate comparison
const normalizedDate = new Date(Date.UTC(gregorianDate.getFullYear(), gregorianDate.getMonth(), gregorianDate.getDate(), 12, 0, 0, 0));
if (normalizedDate < newYearDate) {
return gregorianYear - 8;
} else {
return gregorianYear - 7;
}
}
// Precise Ethiopian date conversion (matching library)
function toEthDateDemo(inputDate, lang = 'en') {
// Normalize input date to noon UTC to avoid timezone issues
const date = new Date(Date.UTC(
inputDate.getFullYear(),
inputDate.getMonth(),
inputDate.getDate(),
12, 0, 0, 0
));
const gregorianYear = date.getUTCFullYear();
let ethiopianYear = getEthiopianYear(inputDate); // Use original date for year calculation
let newYearDate = getEthiopianNewYear(gregorianYear);
// If original date is before Meskerem 1, use the previous year's Meskerem 1
const normalizedInputDate = new Date(Date.UTC(inputDate.getFullYear(), inputDate.getMonth(), inputDate.getDate(), 12, 0, 0, 0));
if (normalizedInputDate < newYearDate) {
ethiopianYear = getEthiopianYear(inputDate);
newYearDate = getEthiopianNewYear(gregorianYear - 1);
}
let daysDiff = Math.floor((date.getTime() - newYearDate.getTime()) / (1000 * 60 * 60 * 24));
let ethiopianMonth, ethiopianDay;
if (daysDiff < 360) {
ethiopianMonth = Math.floor(daysDiff / 30) + 1;
ethiopianDay = (daysDiff % 30) + 1;
} else {
const pagumeDays = daysDiff - 360;
const isLeapYear = isEthiopianLeapYear(ethiopianYear);
if (pagumeDays < (isLeapYear ? 6 : 5)) {
ethiopianMonth = 13;
ethiopianDay = pagumeDays + 1;
} else {
ethiopianMonth = 1;
ethiopianDay = pagumeDays - (isLeapYear ? 6 : 5) + 1;
}
}
const monthName = AMHARIC_MONTHS[lang][ethiopianMonth - 1];
return `${monthName} ${ethiopianDay}, ${ethiopianYear}`;
}
// Geez numeral conversion for demo
// Amharic month names (matching library)
const AMHARIC_MONTHS = {
en: [
"Meskerem", "Tikimt", "Hidar", "Tahsas", "Tir", "Yekatit",
"Megabit", "Miazia", "Genbot", "Sene", "Hamle", "Nehase", "Pagume"
],
am: [
"መስከረም", "ጥቅምት", "ህዳር", "ታህሳስ", "ጥር", "የካቲት",
"መጋቢት", "ሚያዝያ", "ጀንቦት", "ሰኔ", "ሐምሌ", "ነሐሴ", "ጳጉሜ"
]
};
// Tab switching functionality
function showTab(tabName) {
// Hide all sections
document.querySelectorAll('.section').forEach(section => {
section.classList.remove('active');
});
// Remove active class from all nav buttons
document.querySelectorAll('.nav-btn').forEach(btn => {
btn.classList.remove('active');
});
// Show selected section
const sectionElement = document.getElementById(tabName + '-section');
if (sectionElement) {
sectionElement.classList.add('active');
}
// Add active class to clicked button
event.target.classList.add('active');
}
// Transliteration functions
function insertText(text) {
const input = document.getElementById('transliterate-input');
input.value = text;
input.focus();
// Trigger input event
input.dispatchEvent(new Event('input', { bubbles: true }));
}
function clearText() {
const input = document.getElementById('transliterate-input');
const output = document.getElementById('transliterate-output');
input.value = '';
output.textContent = 'እንኳን ደህና መጡ!';
input.focus();
}
// Embedded Ethiopian date conversion (matches library)
const AMHARIC_MONTHS_EMBEDDED = {
en: [
"Meskerem", "Tikimt", "Hidar", "Tahsas", "Tir", "Yekatit",
"Megabit", "Miazia", "Genbot", "Sene", "Hamle", "Nehase", "Pagume"
],
am: [
"መስከረም", "ጥቅምት", "ህዳር", "ታህሳስ", "ጥር", "የካቲት",
"መጋቢት", "ሚያዝያ", "ጀንቦት", "ሰኔ", "ሐምሌ", "ነሐሴ", "ጳጉሜ"
]
};
function toEthDateEmbedded(inputDate, lang = 'en') {
const date = new Date(Date.UTC(
inputDate.getFullYear(),
inputDate.getMonth(),
inputDate.getDate(),
12, 0, 0, 0
));
const gregorianYear = date.getUTCFullYear();
let ethiopianYear = getEthiopianYear(inputDate);
let newYearDate = getEthiopianNewYear(gregorianYear);
const normalizedInputDate = new Date(Date.UTC(inputDate.getFullYear(), inputDate.getMonth(), inputDate.getDate(), 12, 0, 0, 0));
if (normalizedInputDate < newYearDate) {
ethiopianYear = getEthiopianYear(inputDate);
newYearDate = getEthiopianNewYear(gregorianYear - 1);
}
let daysDiff = Math.floor((date.getTime() - newYearDate.getTime()) / (1000 * 60 * 60 * 24));
let ethiopianMonth, ethiopianDay;
if (daysDiff < 360) {
ethiopianMonth = Math.floor(daysDiff / 30) + 1;
ethiopianDay = (daysDiff % 30) + 1;
} else {
const pagumeDays = daysDiff - 360;
if (pagumeDays < 6) { // Assuming non-leap year for demo
ethiopianMonth = 13;
ethiopianDay = pagumeDays + 1;
} else {
ethiopianMonth = 1;
ethiopianDay = pagumeDays - 5;
}
}
const monthName = AMHARIC_MONTHS_EMBEDDED[lang][ethiopianMonth - 1];
return `${monthName} ${ethiopianDay}, ${ethiopianYear}`;
}
// Ethiopian Calendar functions
function convertEthiopianDate(lang) {
const dateInput = document.getElementById('gregorian-date');
const output = document.getElementById('ethiopian-date');
let date;
if (dateInput.value) {
date = new Date(dateInput.value);
} else {
date = new Date();
}
const ethDate = toEthDateEmbedded(date, lang);
output.textContent = ethDate;
// Update active button styling
document.querySelectorAll('.language-buttons .lang-btn').forEach(btn => {
if (btn.onclick.toString().includes(`'${lang}'`)) {
btn.classList.add('active');
} else {
btn.classList.remove('active');
}
});
}
// Embedded Geez numeral conversion (matches library exactly)
const GEEZ_NUMERALS = {
ones: ['', '፩', '፪', '፫', '፬', '፭', '፮', '፯', '፰', '፱'],
tens: ['', '፲', '፳', '፴', '፵', '፶', '፷', '፸', '፹', '፺'],
hundreds: '፻',
tenThousands: '፼'
};