Function splitVariableString

src/shared/utils/VariableString.ts:38–62

(str: string, options: VariableStringOptions = defaultOptions)

 *          All elements with even indices are variable names, and those with odd indices are plain text.
 */
export function splitVariableString(str: string, options: VariableStringOptions = defaultOptions): string[] {
  const splits: string[] = [];
  let prevCutIndex = 0; // (Index of the character after the previous split end)
  // Look for all "open" characters in the string
  for (let i = 0; i < str.length; i++) {
    if (str[i] === options.openChar) {
      // Look for the next "close" character
      const closeIndex = str.indexOf(options.closeChar, i + 1);
      if (closeIndex >= 0) {
        // Push preceding plain text
        splits.push(str.substring(prevCutIndex, i));
        // Push variable name
        splits.push(str.substring(i + 1, closeIndex));
        // Update index
        prevCutIndex = closeIndex + 1;
      }
    }
  }
  // Add the remaining characters
  if (prevCutIndex < str.length) {
    splits.push(str.substring(prevCutIndex));
  }
  // Done
  return splits;
}

const defaultOptions: VariableStringOptions = {
  openChar:  '<',