igir/dist/src/models/patches/apsPatch.js

🕹 A zero-setup ROM collection manager that sorts, filters, extracts or archives, patches, and reports on collections of any size on any OS.

import APSGBAPatch from "./apsGbaPatch.js";
import APSN64Patch from "./apsN64Patch.js";
import Patch from "./patch.js";
class APSPatch extends Patch {
  static SUPPORTED_EXTENSIONS = [".aps"];
  static FILE_SIGNATURE = Buffer.from("APS1");
  /**
   * Parse an .aps patch file and return either an {@link APSN64Patch} or {@link APSGBAPatch}
   * depending on the patch's variant byte.
   */
  static async patchFrom(file) {
    return await file.extractToTempIOFile("r", async (patchFile) => {
      patchFile.seek(this.FILE_SIGNATURE.length);
      const byteFive = (await patchFile.readNext(1)).toString();
      const byteSix = (await patchFile.readNext(1)).readUInt8();
      if (byteFive === "0" && (byteSix === 0 || byteSix === 1)) {
        return await APSN64Patch.patchFrom(file);
      }
      return await APSGBAPatch.patchFrom(file);
    });
  }
}
export {
  APSPatch as default
};
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