preeti2unicode/src/index.js

Convert Preeti, PCS Nepali, and Kantipur fonts to Unicode

const all_rules = require('./rules');

class FontConverter {
  constructor(fontName) {
    this.fontName = fontName.toLowerCase();
    if (!all_rules[this.fontName]) {
      throw new Error(`Font "${fontName}" is not supported`);
    }
    this.fontRules = all_rules[this.fontName];
  }

  convert(text) {
    let output = "";
    
    // Character mapping
    for (let w = 0; w < text.length; w++) {
      const letter = text[w];
      output += this.fontRules["char-map"][letter] || letter;
    }
    
    // Apply post-rules
    for (let r = 0; r < this.fontRules["post-rules"].length; r++) {
      const [pattern, replacement] = this.fontRules["post-rules"][r];
      output = output.replace(new RegExp(pattern, "g"), replacement);
    }
    
    return output;
  }
}

// Convenience functions
function preetiToUnicode(text) {
  return new FontConverter('preeti').convert(text);
}

function pcsToUnicode(text) {
  return new FontConverter('pcs nepali').convert(text);
}

function kantipurToUnicode(text) {
  return new FontConverter('kantipur').convert(text);
}

module.exports = {
  FontConverter,
  preetiToUnicode,
  pcsToUnicode,
  kantipurToUnicode
};