jhm-ciberman/docs_gm

import { injectable } from "inversify";
import GMResourceHelper from "../gm_project/GMResourceHelper";
import IGMFolder from "../gm_project/IGMFolder";
import IProjectRootFinder from "./IProjectRootFinder";

@injectable()
export default class ProjectRootFinder implements IProjectRootFinder {

    /**
     * Finds the project root according to a given path
     * @param folder The base project folder
     * @param path The path to the project root
     * @returns The project root folder according to the given path
     */
    public find(folder: IGMFolder, path: string): IGMFolder {
        return this._findRootFolder(folder, path.split("/"));
    }

    private _findRootFolder(folder: IGMFolder, pathArr: string[]): IGMFolder {
        const name = this._getNextPathPortion(pathArr);
        if (name === undefined) {
            return folder;
        } else {
            return this._findChild(folder, pathArr, name);
        }
    }

    private _findChild(folder: IGMFolder, pathArr: string[], name: string): IGMFolder {
        for (const child of folder.children) {
            if (GMResourceHelper.isFolder(child) && child.name === name) {
                return this._findRootFolder(child, pathArr);
            }
        }
        throw new Error("Project root folder not found");
    }

    private _getNextPathPortion(pathArr: string[]): string | undefined {
        let name: string | undefined;
        do {
            name = pathArr.shift();
        } while (name === "");
        return name;
    }
}