(cache)extensions/serp-domain-index-working-17597649/serp-domain-index-v2/public-suffixes.js at main · Fengsemul/extensions · GitHub

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"use strict";

(() => {
  const api = globalThis.browser ?? globalThis.chrome;

  const PSL_FILE = "public_suffix_list.dat";
  const MAX_PSL_BYTES = 4 * 1024 * 1024;
  const MIN_RULE_COUNT = 1000;

  let loadingPromise = null;
  let exactRules = null;
  let wildcardRules = null;
  let exceptionRules = null;
  let listVersion = "not-loaded";
  let ruleCount = 0;
  let loadedByteLength = 0;

  function normalizeRule(value) {
    return String(value)
      .trim()
      .toLowerCase()
      .replace(/^\.+/, "")
      .replace(/\.+$/, "");
  }

  function normalizeLabels(value) {
    const input = Array.isArray(value)
      ? value
      : String(value)
          .trim()
          .toLowerCase()
          .replace(/\.$/, "")
          .split(".");

    return input
      .map((label) =>
        String(label)
          .trim()
          .toLowerCase()
      )
      .filter(Boolean);
  }

  function extractVersion(text) {
    const firstLines = text
      .split(/\r?\n/, 100);

    for (const line of firstLines) {
      const match = line.match(
        /^\/\/\s*VERSION:\s*(.+?)\s*$/i
      );

      if (match) {
        return match[1]
          .trim()
          .slice(0, 200);
      }
    }

    return "bundled";
  }

  function parsePublicSuffixList(text) {
    if (
      typeof text !== "string" ||
      text.length === 0
    ) {
      throw new Error(
        "The bundled Public Suffix List is empty."
      );
    }

    if (
      !text.includes(
        "// ===BEGIN ICANN DOMAINS==="
      )
    ) {
      throw new Error(
        "The ICANN section is missing from the Public Suffix List."
      );
    }

    if (
      !text.includes(
        "// ===BEGIN PRIVATE DOMAINS==="
      )
    ) {
      throw new Error(
        "The private-domain section is missing from the Public Suffix List."
      );
    }

    const parsedExactRules = new Set();
    const parsedWildcardRules = new Set();
    const parsedExceptionRules = new Set();

    for (
      let line of text.split(/\r?\n/)
    ) {
      line = line.trim();

      if (
        !line ||
        line.startsWith("//")
      ) {
        continue;
      }

      const inlineCommentIndex =
        line.indexOf(" //");

      if (inlineCommentIndex !== -1) {
        line = line
          .slice(0, inlineCommentIndex)
          .trim();
      }

      if (!line) {
        continue;
      }

      if (line.startsWith("!")) {
        const rule = normalizeRule(
          line.slice(1)
        );

        if (rule) {
          parsedExceptionRules.add(rule);
        }

        continue;
      }

      if (line.startsWith("*.")) {
        const rule = normalizeRule(
          line.slice(2)
        );

        if (rule) {
          parsedWildcardRules.add(rule);
        }

        continue;
      }

        )
      ) {
        return Math.max(
          1,
          labels.length -
            start -
            1
        );
      }

      if (
        exactRules.has(candidate)
      ) {
        bestRuleLength = Math.max(
          bestRuleLength,
          labels.length - start
        );
      }

      if (
        start + 1 <
        labels.length
      ) {
        const wildcardBase =
          labels
            .slice(start + 1)
            .join(".");

        if (
          wildcardRules.has(
            wildcardBase
          )
        ) {
          bestRuleLength = Math.max(
            bestRuleLength,
            labels.length - start
          );
        }
      }
    }

    return Math.min(
      bestRuleLength,
      labels.length - 1
    );
  }

  function getStatus() {
    return Object.freeze({
      loaded: Boolean(
        exactRules &&
        wildcardRules &&
        exceptionRules
      ),
      version: listVersion,
      ruleCount,
      exactRuleCount:
        exactRules?.size ?? 0,
      wildcardRuleCount:
        wildcardRules?.size ?? 0,
      exceptionRuleCount:
        exceptionRules?.size ?? 0,
      byteLength:
        loadedByteLength
    });
  }

  globalThis.PublicSuffixData =
    Object.freeze({
      load,
      getPublicSuffixLabelCount,
      getStatus
    });
})();