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14
src/helper/hex.ts
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14
src/helper/hex.ts
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// Pre-Init
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const LUT_HEX_4b = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];
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const LUT_HEX_8b = new Array(0x100);
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for (let n = 0; n < 0x100; n++) {
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LUT_HEX_8b[n] = `${LUT_HEX_4b[(n >>> 4) & 0xF]}${LUT_HEX_4b[n & 0xF]}`;
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}
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// End Pre-Init
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export function toHex(buffer: Uint8Array): string {
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let out = '';
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for (let idx = 0, edx = buffer.length; idx < edx; idx++) {
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out += LUT_HEX_8b[buffer[idx]];
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}
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return out;
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}
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269
src/helper/path.ts
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269
src/helper/path.ts
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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// resolves . and .. elements in a path array with directory names there
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// must be no slashes or device names (c:\) in the array
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// (so also no leading and trailing slashes - it does not distinguish
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// relative and absolute paths)
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function normalizeArray(parts, allowAboveRoot) {
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var res = [];
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for (var i = 0; i < parts.length; i++) {
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var p = parts[i];
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// ignore empty parts
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if (!p || p === '.')
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continue;
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if (p === '..') {
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if (res.length && res[res.length - 1] !== '..') {
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res.pop();
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} else if (allowAboveRoot) {
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res.push('..');
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}
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} else {
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res.push(p);
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}
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}
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return res;
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}
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// returns an array with empty elements removed from either end of the input
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// array or the original array if no elements need to be removed
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function trimArray(arr) {
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var lastIndex = arr.length - 1;
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var start = 0;
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for (; start <= lastIndex; start++) {
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if (arr[start])
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break;
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}
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var end = lastIndex;
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for (; end >= 0; end--) {
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if (arr[end])
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break;
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}
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if (start === 0 && end === lastIndex)
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return arr;
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if (start > end)
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return [];
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return arr.slice(start, end + 1);
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}
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// // Regex to split the tail part of the above into [*, dir, basename, ext]
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// const splitTailRe =
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// /^([\s\S]*?)((?:\.{1,2}|[^\\\/]+?|)(\.[^.\/\\]*|))(?:[\\\/]*)$/;
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// function normalizeUNCRoot(device) {
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// return '\\\\' + device.replace(/^[\\\/]+/, '').replace(/[\\\/]+/g, '\\');
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// }
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// Split a filename into [root, dir, basename, ext], unix version
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// 'root' is just a slash, or nothing.
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const splitPathRe =
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/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
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function posixSplitPath(filename) {
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return splitPathRe.exec(filename).slice(1);
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}
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export class Posix {
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static readonly sep = '/';
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static readonly delimiter = ':';
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static resolve(...paths: string[]) {
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var resolvedPath = '',
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resolvedAbsolute = false;
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for (var i = paths.length - 1; i >= -1 && !resolvedAbsolute; i--) {
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var path = (i >= 0) ? paths[i] : "/";
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// Skip empty and invalid entries
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if (typeof path !== "string") {
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throw new TypeError('Arguments to path.resolve must be strings');
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} else if (!path) {
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continue;
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}
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resolvedPath = path + '/' + resolvedPath;
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resolvedAbsolute = path[0] === '/';
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}
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// At this point the path should be resolved to a full absolute path, but
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// handle relative paths to be safe (might happen when process.cwd() fails)
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// Normalize the path
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resolvedPath = normalizeArray(resolvedPath.split('/'),
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!resolvedAbsolute).join('/');
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return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
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}
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static normalize(path: string) {
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var isAbsolute = Posix.isAbsolute(path),
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trailingSlash = path && path[path.length - 1] === '/';
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// Normalize the path
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path = normalizeArray(path.split('/'), !isAbsolute).join('/');
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if (!path && !isAbsolute) {
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path = '.';
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}
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if (path && trailingSlash) {
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path += '/';
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}
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return (isAbsolute ? '/' : '') + path;
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}
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static join(...paths: string[]) {
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var path = '';
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for (var i = 0; i < arguments.length; i++) {
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var segment = arguments[i];
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if (typeof segment !== "string") {
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throw new TypeError('Arguments to path.join must be strings');
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}
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if (segment) {
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if (!path) {
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path += segment;
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} else {
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path += '/' + segment;
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}
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}
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}
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return Posix.normalize(path);
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}
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static relative(from: string, to: string) {
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from = Posix.resolve(from).substr(1);
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to = Posix.resolve(to).substr(1);
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var fromParts = trimArray(from.split('/'));
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var toParts = trimArray(to.split('/'));
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var length = Math.min(fromParts.length, toParts.length);
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var samePartsLength = length;
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for (var i = 0; i < length; i++) {
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if (fromParts[i] !== toParts[i]) {
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samePartsLength = i;
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break;
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}
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}
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var outputParts = [];
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for (var i = samePartsLength; i < fromParts.length; i++) {
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outputParts.push('..');
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}
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outputParts = outputParts.concat(toParts.slice(samePartsLength));
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return outputParts.join('/');
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}
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static dirname(path: string) {
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var result = posixSplitPath(path),
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root = result[0],
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dir = result[1];
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if (!root && !dir) {
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// No dirname whatsoever
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return '.';
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}
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if (dir) {
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// It has a dirname, strip trailing slash
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dir = dir.substr(0, dir.length - 1);
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}
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return root + dir;
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}
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static basename(path: string, ext?: string) {
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var f = posixSplitPath(path)[2];
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// TODO: make this comparison case-insensitive on windows?
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if (ext && f.substr(-1 * ext.length) === ext) {
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f = f.substr(0, f.length - ext.length);
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}
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return f;
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}
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static extname(path: string) {
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return posixSplitPath(path)[3];
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}
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static format(pathObject: any) {
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if (typeof pathObject !== "object") {
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throw new TypeError(
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"Parameter 'pathObject' must be an object, not " + typeof pathObject
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);
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}
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var root = pathObject.root || '';
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if (typeof root !== "string") {
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throw new TypeError(
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"'pathObject.root' must be a string or undefined, not " +
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typeof pathObject.root
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);
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}
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var dir = pathObject.dir ? pathObject.dir + Posix.sep : '';
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var base = pathObject.base || '';
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return dir + base;
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}
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static parse(pathString: string) {
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if (typeof pathString !== "string") {
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throw new TypeError(
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"Parameter 'pathString' must be a string, not " + typeof pathString
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);
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}
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var allParts = posixSplitPath(pathString);
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if (!allParts || allParts.length !== 4) {
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throw new TypeError("Invalid path '" + pathString + "'");
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}
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allParts[1] = allParts[1] || '';
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allParts[2] = allParts[2] || '';
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allParts[3] = allParts[3] || '';
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return {
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root: allParts[0],
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dir: allParts[0] + allParts[1].slice(0, -1),
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base: allParts[2],
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ext: allParts[3],
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name: allParts[2].slice(0, allParts[2].length - allParts[3].length)
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};
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}
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static isAbsolute(path: string) {
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return path.charAt(0) === '/';
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}
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};
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export const Path = Posix;
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export default Path;
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