38 lines
990 B
TypeScript
38 lines
990 B
TypeScript
import ContentFilterBase from "./contentFilterBase.js";
|
|
|
|
export default class ContentFilterRegistry {
|
|
private static contentFilters: ContentFilterBase[] = [];
|
|
|
|
public static hasFilters(type: string): boolean {
|
|
return (
|
|
ContentFilterRegistry.contentFilters.filter((item) =>
|
|
item.getMimeTypes().includes(type)
|
|
).length > 0
|
|
);
|
|
}
|
|
|
|
public static filter(type: string) {
|
|
return async (data: Uint8Array) => {
|
|
const filters = ContentFilterRegistry.contentFilters.filter((item) =>
|
|
item.getMimeTypes().includes(type)
|
|
);
|
|
|
|
if (!filters.length) {
|
|
return data;
|
|
}
|
|
|
|
let filterData = new TextDecoder().decode(data);
|
|
|
|
for (const filter of filters) {
|
|
filterData = await filter.filter(filterData);
|
|
}
|
|
|
|
return new TextEncoder().encode(filterData);
|
|
};
|
|
}
|
|
|
|
public static registerFilter(contentFilter: ContentFilterBase): void {
|
|
ContentFilterRegistry.contentFilters.push(contentFilter);
|
|
}
|
|
}
|