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import type { EtaConfig } from "./config.ts";
/** * Takes a string within a template and trims it, based on the preceding tag's whitespace control and `config.autoTrim` */
export function trimWS(  str: string,  config: EtaConfig,  wsLeft: string | false,  wsRight?: string | false): string {  let leftTrim;  let rightTrim;
  if (Array.isArray(config.autoTrim)) {    // Slightly confusing,    // but _}} will trim the left side of the following string    leftTrim = config.autoTrim[1];    rightTrim = config.autoTrim[0];  } else {    leftTrim = rightTrim = config.autoTrim;  }
  if (wsLeft || wsLeft === false) {    leftTrim = wsLeft;  }
  if (wsRight || wsRight === false) {    rightTrim = wsRight;  }
  if (!rightTrim && !leftTrim) {    return str;  }
  if (leftTrim === "slurp" && rightTrim === "slurp") {    return str.trim();  }
  if (leftTrim === "_" || leftTrim === "slurp") {    // full slurp    str = str.trimStart();  } else if (leftTrim === "-" || leftTrim === "nl") {    // nl trim    str = str.replace(/^(?:\r\n|\n|\r)/, "");  }
  if (rightTrim === "_" || rightTrim === "slurp") {    // full slurp    str = str.trimEnd();  } else if (rightTrim === "-" || rightTrim === "nl") {    // nl trim    str = str.replace(/(?:\r\n|\n|\r)$/, "");  }
  return str;}
/** * A map of special HTML characters to their XML-escaped equivalents */
const escMap: { [key: string]: string } = {  "&": "&amp;",  "<": "&lt;",  ">": "&gt;",  '"': "&quot;",  "'": "&#39;",};
function replaceChar(s: string): string {  return escMap[s];}
/** * XML-escapes an input value after converting it to a string * * @param str - Input value (usually a string) * @returns XML-escaped string */
export function XMLEscape(str: unknown): string {  // To deal with XSS. Based on Escape implementations of Mustache.JS and Marko, then customized.  const newStr = String(str);  if (/[&<>"']/.test(newStr)) {    return newStr.replace(/[&<>"']/g, replaceChar);  } else {    return newStr;  }}