mirror of
https://github.com/denoland/deno.git
synced 2024-11-27 16:10:57 -05:00
538 lines
15 KiB
TypeScript
538 lines
15 KiB
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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import { deepAssign } from "../util/deep_assign.ts";
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import { pad } from "../strings/pad.ts";
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class KeyValuePair {
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key: string;
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value: unknown;
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}
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class ParserGroup {
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type: string;
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name: string;
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arrValues: unknown[] = [];
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objValues: object = {};
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}
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class ParserContext {
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currentGroup?: ParserGroup;
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output: object = {};
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}
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class Parser {
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tomlLines: string[];
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context: ParserContext;
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constructor(tomlString: string) {
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this.tomlLines = this._split(tomlString);
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this.context = new ParserContext();
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}
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_sanitize(): void {
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const out = [];
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for (let i = 0; i < this.tomlLines.length; i++) {
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const s = this.tomlLines[i];
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const trimmed = s.trim();
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if (trimmed !== "" && trimmed[0] !== "#") {
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out.push(s);
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}
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}
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this.tomlLines = out;
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this._mergeMultilines();
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}
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_mergeMultilines(): void {
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function arrayStart(line: string): boolean {
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const reg = /.*=\s*\[/g;
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return reg.test(line) && !(line[line.length - 1] === "]");
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}
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function arrayEnd(line: string): boolean {
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return line[line.length - 1] === "]";
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}
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function stringStart(line: string): boolean {
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const m = line.match(/.*=\s*(?:\"\"\"|''')/);
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if (!m) {
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return false;
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}
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return !line.endsWith(`"""`) || !line.endsWith(`'''`);
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}
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function stringEnd(line: string): boolean {
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return line.endsWith(`'''`) || line.endsWith(`"""`);
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}
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function isLiteralString(line: string): boolean {
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return line.match(/'''/) ? true : false;
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}
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let merged = [],
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acc = [],
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isLiteral = false,
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capture = false,
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captureType = "",
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merge = false;
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for (let i = 0; i < this.tomlLines.length; i++) {
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const line = this.tomlLines[i];
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const trimmed = line.trim();
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if (!capture && arrayStart(trimmed)) {
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capture = true;
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captureType = "array";
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} else if (!capture && stringStart(trimmed)) {
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isLiteral = isLiteralString(trimmed);
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capture = true;
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captureType = "string";
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} else if (capture && arrayEnd(trimmed)) {
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merge = true;
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} else if (capture && stringEnd(trimmed)) {
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merge = true;
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}
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if (capture) {
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if (isLiteral) {
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acc.push(line);
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} else {
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acc.push(trimmed);
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}
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} else {
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if (isLiteral) {
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merged.push(line);
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} else {
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merged.push(trimmed);
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}
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}
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if (merge) {
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capture = false;
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merge = false;
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if (captureType === "string") {
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merged.push(
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acc
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.join("\n")
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.replace(/"""/g, '"')
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.replace(/'''/g, `'`)
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.replace(/\n/g, "\\n")
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);
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isLiteral = false;
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} else {
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merged.push(acc.join(""));
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}
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captureType = "";
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acc = [];
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}
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}
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this.tomlLines = merged;
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}
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_unflat(keys: string[], values: object = {}, cObj: object = {}): object {
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let out = {};
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if (keys.length === 0) {
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return cObj;
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} else {
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if (Object.keys(cObj).length === 0) {
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cObj = values;
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}
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let key = keys.pop();
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out[key] = cObj;
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return this._unflat(keys, values, out);
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}
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}
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_groupToOutput(): void {
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const arrProperty = this.context.currentGroup.name
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.replace(/"/g, "")
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.replace(/'/g, "")
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.split(".");
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let u = {};
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if (this.context.currentGroup.type === "array") {
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u = this._unflat(arrProperty, this.context.currentGroup.arrValues);
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} else {
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u = this._unflat(arrProperty, this.context.currentGroup.objValues);
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}
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deepAssign(this.context.output, u);
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delete this.context.currentGroup;
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}
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_split(str: string): string[] {
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let out = [];
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out.push(...str.split("\n"));
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return out;
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}
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_isGroup(line: string): boolean {
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const t = line.trim();
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return t[0] === "[" && /\[(.*)\]/.exec(t) ? true : false;
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}
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_isDeclaration(line: string): boolean {
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return line.split("=").length > 1;
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}
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_createGroup(line: string): void {
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const captureReg = /\[(.*)\]/;
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if (this.context.currentGroup) {
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this._groupToOutput();
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}
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let g = new ParserGroup();
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g.name = line.match(captureReg)[1];
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if (g.name.match(/\[.*\]/)) {
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g.type = "array";
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g.name = g.name.match(captureReg)[1];
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} else {
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g.type = "object";
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}
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this.context.currentGroup = g;
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}
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_processDeclaration(line: string): KeyValuePair {
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let kv = new KeyValuePair();
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const idx = line.indexOf("=");
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kv.key = line.substring(0, idx).trim();
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kv.value = this._parseData(line.slice(idx + 1));
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return kv;
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}
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// TODO (zekth) Need refactor using ACC
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_parseData(dataString: string): unknown {
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dataString = dataString.trim();
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if (this._isDate(dataString)) {
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return new Date(dataString.split("#")[0].trim());
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}
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if (this._isLocalTime(dataString)) {
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return eval(`"${dataString.split("#")[0].trim()}"`);
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}
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const cut3 = dataString.substring(0, 3).toLowerCase();
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const cut4 = dataString.substring(0, 4).toLowerCase();
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if (cut3 === "inf" || cut4 === "+inf") {
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return Infinity;
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}
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if (cut4 === "-inf") {
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return -Infinity;
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}
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if (cut3 === "nan" || cut4 === "+nan" || cut4 === "-nan") {
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return NaN;
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}
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// If binary / octal / hex
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const hex = /(0(?:x|o|b)[0-9a-f_]*)[^#]/gi.exec(dataString);
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if (hex && hex[0]) {
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return hex[0].trim();
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}
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const testNumber = this._isParsableNumber(dataString);
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if (testNumber && !isNaN(testNumber as number)) {
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return testNumber;
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}
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const invalidArr = /,\]/g.exec(dataString);
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if (invalidArr) {
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dataString = dataString.replace(/,]/g, "]");
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}
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const m = /(?:\'|\[|{|\").*(?:\'|\]|\"|})\s*[^#]/g.exec(dataString);
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if (m) {
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dataString = m[0].trim();
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}
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if (dataString[0] === "{" && dataString[dataString.length - 1] === "}") {
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const reg = /([a-zA-Z0-9-_\.]*) (=)/gi;
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let result;
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while ((result = reg.exec(dataString))) {
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let ogVal = result[0];
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let newVal = ogVal
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.replace(result[1], `"${result[1]}"`)
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.replace(result[2], ":");
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dataString = dataString.replace(ogVal, newVal);
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}
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return JSON.parse(dataString);
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}
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// Handle First and last EOL for multiline strings
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if (dataString.startsWith(`"\\n`)) {
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dataString = dataString.replace(`"\\n`, `"`);
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} else if (dataString.startsWith(`'\\n`)) {
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dataString = dataString.replace(`'\\n`, `'`);
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}
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if (dataString.endsWith(`\\n"`)) {
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dataString = dataString.replace(`\\n"`, `"`);
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} else if (dataString.endsWith(`\\n'`)) {
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dataString = dataString.replace(`\\n'`, `'`);
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}
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return eval(dataString);
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}
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_isLocalTime(str: string): boolean {
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const reg = /(\d{2}):(\d{2}):(\d{2})/;
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return reg.test(str);
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}
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_isParsableNumber(dataString: string): number | boolean {
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const m = /((?:\+|-|)[0-9_\.e+\-]*)[^#]/i.exec(dataString.trim());
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if (!m) {
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return false;
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} else {
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return parseFloat(m[0].replace(/_/g, ""));
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}
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}
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_isDate(dateStr: string): boolean {
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const reg = /\d{4}-\d{2}-\d{2}/;
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return reg.test(dateStr);
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}
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_parseDeclarationName(declaration: string): string[] {
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const out = [];
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let acc = [];
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let inLiteral = false;
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for (let i = 0; i < declaration.length; i++) {
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const c = declaration[i];
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switch (c) {
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case ".":
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if (!inLiteral) {
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out.push(acc.join(""));
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acc = [];
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} else {
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acc.push(c);
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}
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break;
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case `"`:
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if (inLiteral) {
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inLiteral = false;
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} else {
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inLiteral = true;
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}
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break;
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default:
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acc.push(c);
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break;
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}
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}
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if (acc.length !== 0) {
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out.push(acc.join(""));
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}
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return out;
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}
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_parseLines(): void {
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for (let i = 0; i < this.tomlLines.length; i++) {
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const line = this.tomlLines[i];
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// TODO (zekth) Handle unflat of array of tables
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if (this._isGroup(line)) {
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// if the current group is an array we push the
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// parsed objects in it.
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if (
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this.context.currentGroup &&
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this.context.currentGroup.type === "array"
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) {
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this.context.currentGroup.arrValues.push(
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this.context.currentGroup.objValues
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);
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this.context.currentGroup.objValues = {};
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}
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// If we need to create a group or to change group
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if (
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!this.context.currentGroup ||
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(this.context.currentGroup &&
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this.context.currentGroup.name !==
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line.replace(/\[/g, "").replace(/\]/g, ""))
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) {
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this._createGroup(line);
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continue;
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}
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}
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if (this._isDeclaration(line)) {
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let kv = this._processDeclaration(line);
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let key = kv.key;
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let value = kv.value;
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if (!this.context.currentGroup) {
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this.context.output[key] = value;
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} else {
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this.context.currentGroup.objValues[key] = value;
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}
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}
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}
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if (this.context.currentGroup) {
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if (this.context.currentGroup.type === "array") {
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this.context.currentGroup.arrValues.push(
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this.context.currentGroup.objValues
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);
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}
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this._groupToOutput();
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}
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}
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_cleanOutput(): void {
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this._propertyClean(this.context.output);
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}
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_propertyClean(obj: object): void {
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const keys = Object.keys(obj);
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for (let i = 0; i < keys.length; i++) {
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let k = keys[i];
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let v = obj[k];
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let pathDeclaration = this._parseDeclarationName(k);
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delete obj[k];
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if (pathDeclaration.length > 1) {
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k = pathDeclaration.shift();
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k = k.replace(/"/g, "");
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v = this._unflat(pathDeclaration, v as object);
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} else {
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k = k.replace(/"/g, "");
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}
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obj[k] = v;
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if (v instanceof Object) {
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this._propertyClean(v);
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}
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}
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}
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parse(): object {
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this._sanitize();
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this._parseLines();
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this._cleanOutput();
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return this.context.output;
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}
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}
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class Dumper {
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maxPad: number = 0;
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srcObject: object;
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output: string[] = [];
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constructor(srcObjc: object) {
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this.srcObject = srcObjc;
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}
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dump(): string[] {
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this.output = this._parse(this.srcObject);
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this.output = this._format();
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return this.output;
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}
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_parse(obj: object, path: string = ""): string[] {
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const out = [];
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const props = Object.keys(obj);
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const propObj = props.filter(
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(e): boolean =>
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(obj[e] instanceof Array && !this._isSimplySerializable(obj[e][0])) ||
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!this._isSimplySerializable(obj[e])
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);
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const propPrim = props.filter(
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(e): boolean =>
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!(obj[e] instanceof Array && !this._isSimplySerializable(obj[e][0])) &&
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this._isSimplySerializable(obj[e])
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);
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const k = propPrim.concat(propObj);
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for (let i = 0; i < k.length; i++) {
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const prop = k[i];
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const value = obj[prop];
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if (value instanceof Date) {
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out.push(this._dateDeclaration(prop, value));
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} else if (typeof value === "string" || value instanceof RegExp) {
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out.push(this._strDeclaration(prop, value.toString()));
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} else if (typeof value === "number") {
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out.push(this._numberDeclaration(prop, value));
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} else if (
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value instanceof Array &&
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this._isSimplySerializable(value[0])
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) {
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// only if primitives types in the array
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out.push(this._arrayDeclaration(prop, value));
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} else if (
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value instanceof Array &&
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!this._isSimplySerializable(value[0])
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) {
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// array of objects
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for (let i = 0; i < value.length; i++) {
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out.push("");
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out.push(this._headerGroup(path + prop));
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out.push(...this._parse(value[i], `${path}${prop}.`));
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}
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} else if (typeof value === "object") {
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out.push("");
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out.push(this._header(path + prop));
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out.push(...this._parse(value, `${path}${prop}.`));
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}
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}
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out.push("");
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return out;
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}
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_isSimplySerializable(value: unknown): boolean {
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return (
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typeof value === "string" ||
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typeof value === "number" ||
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value instanceof RegExp ||
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value instanceof Date ||
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value instanceof Array
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);
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}
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_header(title: string): string {
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return `[${title}]`;
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}
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_headerGroup(title: string): string {
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return `[[${title}]]`;
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}
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_declaration(title: string): string {
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if (title.length > this.maxPad) {
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this.maxPad = title.length;
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}
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return `${title} = `;
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}
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_arrayDeclaration(title: string, value: unknown[]): string {
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return `${this._declaration(title)}${JSON.stringify(value)}`;
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}
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_strDeclaration(title: string, value: string): string {
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return `${this._declaration(title)}"${value}"`;
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}
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_numberDeclaration(title: string, value: number): string {
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switch (value) {
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case Infinity:
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return `${this._declaration(title)}inf`;
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case -Infinity:
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return `${this._declaration(title)}-inf`;
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default:
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return `${this._declaration(title)}${value}`;
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}
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}
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_dateDeclaration(title: string, value: Date): string {
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function dtPad(v: string, lPad: number = 2): string {
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return pad(v, lPad, { char: "0" });
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}
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let m = dtPad((value.getUTCMonth() + 1).toString());
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let d = dtPad(value.getUTCDate().toString());
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const h = dtPad(value.getUTCHours().toString());
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const min = dtPad(value.getUTCMinutes().toString());
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const s = dtPad(value.getUTCSeconds().toString());
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const ms = dtPad(value.getUTCMilliseconds().toString(), 3);
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const fmtDate = `${value.getUTCFullYear()}-${m}-${d}T${h}:${min}:${s}.${ms}`;
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return `${this._declaration(title)}${fmtDate}`;
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}
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_format(): string[] {
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const rDeclaration = /(.*)\s=/;
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const out = [];
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for (let i = 0; i < this.output.length; i++) {
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const l = this.output[i];
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// we keep empty entry for array of objects
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if (l[0] === "[" && l[1] !== "[") {
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// empty object
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if (this.output[i + 1] === "") {
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i += 1;
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continue;
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}
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out.push(l);
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} else {
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const m = rDeclaration.exec(l);
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if (m) {
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out.push(l.replace(m[1], pad(m[1], this.maxPad, { side: "right" })));
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} else {
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out.push(l);
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}
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}
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}
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// Cleaning multiple spaces
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const cleanedOutput = [];
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for (let i = 0; i < out.length; i++) {
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const l = out[i];
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if (!(l === "" && out[i + 1] === "")) {
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cleanedOutput.push(l);
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}
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}
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return cleanedOutput;
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}
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}
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export function stringify(srcObj: object): string {
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let out: string[] = [];
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out = new Dumper(srcObj).dump();
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return out.join("\n");
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}
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export function parse(tomlString: string): object {
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// File is potentially using EOL CRLF
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tomlString = tomlString.replace(/\r\n/g, "\n").replace(/\\\n/g, "\n");
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return new Parser(tomlString).parse();
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}
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