"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const path_1 = __importDefault(require("path"));
const error_1 = __importDefault(require("./error"));
// Normalize a filename
function normalizePath(filename) {
    return path_1.default.normalize(filename);
}
// Return true if file path is inside a folder
function isInRoot(root, filename) {
    root = path_1.default.normalize(root);
    filename = path_1.default.normalize(filename);
    if (root === ".") {
        return true;
    }
    if (root[root.length - 1] != path_1.default.sep) {
        root = root + path_1.default.sep;
    }
    return filename.substr(0, root.length) === root;
}
// Resolve paths in a specific folder
// Throw error if file is outside this folder
function resolveInRoot(root) {
    const args = Array.prototype.slice.call(arguments, 1);
    const input = args.reduce((current, p) => {
        // Handle path relative to book root ("/README.md")
        if (p[0] == "/" || p[0] == "\\")
            return p.slice(1);
        return current ? path_1.default.join(current, p) : path_1.default.normalize(p);
    }, "");
    const result = path_1.default.resolve(root, input);
    if (!isInRoot(root, result)) {
        throw new error_1.default.FileOutOfScopeError({
            filename: result,
            root: root
        });
    }
    return result;
}
// Chnage extension of a file
function setExtension(filename, ext) {
    return path_1.default.join(path_1.default.dirname(filename), path_1.default.basename(filename, path_1.default.extname(filename)) + ext);
}
/*
    Return true if a filename is relative.

    @param {string}
    @return {boolean}
*/
function isPureRelative(filename) {
    return filename.indexOf("./") === 0 || filename.indexOf("../") === 0;
}
exports.default = {
    isInRoot: isInRoot,
    resolveInRoot: resolveInRoot,
    normalize: normalizePath,
    setExtension: setExtension,
    isPureRelative: isPureRelative
};