kira-crud/utils/string-utils.js

Intelligent CRUD Generator for Laravel and Angular

/**
 * String utility functions for case conversion
 */

/**
 * Convert a string to PascalCase
 * @param {string} str - The input string
 * @returns {string} The PascalCase string
 */
function pascalCase(str) {
  return str
    .split(/[-_\s]+/)
    .map(word => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase())
    .join('');
}

/**
 * Convert a string to camelCase
 * @param {string} str - The input string
 * @returns {string} The camelCase string
 */
function camelCase(str) {
  const pascal = pascalCase(str);
  return pascal.charAt(0).toLowerCase() + pascal.slice(1);
}

/**
 * Convert a string to kebab-case
 * @param {string} str - The input string
 * @returns {string} The kebab-case string
 */
function kebabCase(str) {
  return str
    .replace(/([a-z])([A-Z])/g, '$1-$2')
    .replace(/[\s_]+/g, '-')
    .toLowerCase();
}

/**
 * Convert a string to snake_case
 * @param {string} str - The input string
 * @returns {string} The snake_case string
 */
function snakeCase(str) {
  return str
    .replace(/([a-z])([A-Z])/g, '$1_$2')
    .replace(/[\s-]+/g, '_')
    .toLowerCase();
}

/**
 * Convert a string to CONSTANT_CASE
 * @param {string} str - The input string
 * @returns {string} The CONSTANT_CASE string
 */
function constantCase(str) {
  return snakeCase(str).toUpperCase();
}

/**
 * Convert a singular word to plural
 * @param {string} str - The singular word
 * @returns {string} The plural form
 */
function pluralize(str) {
  // Very basic pluralization rules
  if (str.endsWith('y')) {
    return str.slice(0, -1) + 'ies';
  } else if (str.endsWith('s') || str.endsWith('x') || str.endsWith('z') || 
             str.endsWith('ch') || str.endsWith('sh')) {
    return str + 'es';
  } else {
    return str + 's';
  }
}

/**
 * Convert a plural word to singular
 * @param {string} str - The plural word
 * @returns {string} The singular form
 */
function singularize(str) {
  // Very basic singularization rules
  if (str.endsWith('ies')) {
    return str.slice(0, -3) + 'y';
  } else if (str.endsWith('es')) {
    return str.slice(0, -2);
  } else if (str.endsWith('s') && str.length > 1) {
    return str.slice(0, -1);
  } else {
    return str;
  }
}

/**
 * Capitalize the first letter of a string
 * @param {string} str - The input string
 * @returns {string} The capitalized string
 */
function capitalize(str) {
  return str.charAt(0).toUpperCase() + str.slice(1);
}

/**
 * Decapitalize the first letter of a string
 * @param {string} str - The input string
 * @returns {string} The decapitalized string
 */
function decapitalize(str) {
  return str.charAt(0).toLowerCase() + str.slice(1);
}

/**
 * Convert a string to Title Case
 * @param {string} str - The input string
 * @returns {string} The Title Case string
 */
function titleCase(str) {
  return str.split(/\s+/).map(capitalize).join(' ');
}

module.exports = {
  pascalCase,
  camelCase,
  kebabCase,
  snakeCase,
  constantCase,
  pluralize,
  singularize,
  capitalize,
  decapitalize,
  titleCase
};