mirror of
https://github.com/denoland/deno.git
synced 2024-11-23 15:16:54 -05:00
736 lines
21 KiB
TypeScript
736 lines
21 KiB
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { deepAssign } from "../_util/deep_assign.ts";
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import { assert } from "../_util/assert.ts";
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class TOMLError extends Error {}
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class KeyValuePair {
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constructor(public key: string, public value: unknown) {}
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}
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class ParserGroup {
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arrValues: unknown[] = [];
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objValues: Record<string, unknown> = {};
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constructor(public type: string, public name: string) {}
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}
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class ParserContext {
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currentGroup?: ParserGroup;
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output: Record<string, unknown> = {};
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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: string[] = [];
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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 !== "") {
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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._removeComments();
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this._mergeMultilines();
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}
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_removeComments(): void {
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function isFullLineComment(line: string) {
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return line.match(/^#/) ? true : false;
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}
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function stringStart(line: string) {
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const m = line.match(/(?:=\s*\[?\s*)("""|'''|"|')/);
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if (!m) {
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return false;
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}
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// We want to know which syntax was used to open the string
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openStringSyntax = m[1];
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return true;
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}
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function stringEnd(line: string) {
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// match the syntax used to open the string when searching for string close
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// e.g. if we open with ''' we must close with a '''
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const reg = RegExp(`(?<!(=\\s*))${openStringSyntax}(?!(.*"))`);
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if (!line.match(reg)) {
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return false;
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}
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openStringSyntax = "";
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return true;
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}
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const cleaned = [];
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let isOpenString = false;
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let openStringSyntax = "";
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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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// stringStart and stringEnd are separate conditions to
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// support both single-line and multi-line strings
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if (!isOpenString && stringStart(line)) {
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isOpenString = true;
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}
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if (isOpenString && stringEnd(line)) {
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isOpenString = false;
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}
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if (!isOpenString && !isFullLineComment(line)) {
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const out = line.split(
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/(?<=([\,\[\]\{\}]|".*"|'.*'|\w(?!.*("|')+))\s*)#/gi,
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);
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cleaned.push(out[0].trim());
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} else if (isOpenString || !isFullLineComment(line)) {
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cleaned.push(line);
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}
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// If a single line comment doesnt end on the same line, throw error
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if (
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isOpenString && (openStringSyntax === "'" || openStringSyntax === '"')
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) {
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throw new TOMLError(`Single-line string is not closed:\n${line}`);
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}
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}
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if (isOpenString) {
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throw new TOMLError(`Incomplete string until EOF`);
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}
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this.tomlLines = cleaned;
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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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const merged = [];
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let 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(
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keys: string[],
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values: Record<string, unknown> | unknown[] = {},
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cObj: Record<string, unknown> | unknown[] = {},
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): Record<string, unknown> {
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const out: Record<string, unknown> = {};
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if (keys.length === 0) {
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return cObj as Record<string, unknown>;
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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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const key: string | undefined = keys.pop();
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if (key) {
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out[key] = cObj;
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}
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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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assert(this.context.currentGroup != null, "currentGroup must be set");
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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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const 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 type;
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let m = line.match(captureReg);
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assert(m != null, "line mut be matched");
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let name = m[1];
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if (name.match(/\[.*\]/)) {
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type = "array";
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m = name.match(captureReg);
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assert(m != null, "name must be matched");
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name = m[1];
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} else {
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type = "object";
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}
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this.context.currentGroup = new ParserGroup(type, name);
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}
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_processDeclaration(line: string): KeyValuePair {
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const idx = line.indexOf("=");
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const key = line.substring(0, idx).trim();
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const value = this._parseData(line.slice(idx + 1));
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return new KeyValuePair(key, value);
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}
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_parseData(dataString: string): unknown {
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dataString = dataString.trim();
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switch (dataString[0]) {
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case '"':
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case "'":
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return this._parseString(dataString);
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case "[":
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case "{":
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return this._parseInlineTableOrArray(dataString);
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default: {
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// Strip a comment.
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const match = /#.*$/.exec(dataString);
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if (match) {
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dataString = dataString.slice(0, match.index).trim();
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}
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switch (dataString) {
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case "true":
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return true;
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case "false":
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return false;
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case "inf":
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case "+inf":
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return Infinity;
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case "-inf":
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return -Infinity;
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case "nan":
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case "+nan":
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case "-nan":
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return NaN;
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default:
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return this._parseNumberOrDate(dataString);
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}
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}
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}
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}
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_parseInlineTableOrArray(dataString: string): unknown {
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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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if (
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(dataString[0] === "{" && dataString[dataString.length - 1] === "}") ||
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(dataString[0] === "[" && dataString[dataString.length - 1] === "]")
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) {
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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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const ogVal = result[0];
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const 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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throw new TOMLError("Malformed inline table or array literal");
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}
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_parseString(dataString: string): string {
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const quote = dataString[0];
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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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let value = "";
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for (let i = 1; i < dataString.length; i++) {
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switch (dataString[i]) {
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case "\\":
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i++;
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// See https://toml.io/en/v1.0.0-rc.3#string
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switch (dataString[i]) {
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case "b":
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value += "\b";
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break;
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case "t":
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value += "\t";
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break;
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case "n":
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value += "\n";
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break;
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case "f":
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value += "\f";
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break;
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case "r":
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value += "\r";
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break;
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case "u":
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case "U": {
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// Unicode character
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const codePointLen = dataString[i] === "u" ? 4 : 6;
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const codePoint = parseInt(
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"0x" + dataString.slice(i + 1, i + 1 + codePointLen),
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16,
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);
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value += String.fromCodePoint(codePoint);
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i += codePointLen;
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break;
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}
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case "\\":
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value += "\\";
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break;
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default:
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value += dataString[i];
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break;
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}
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break;
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case quote:
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if (dataString[i - 1] !== "\\") {
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return value;
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}
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break;
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default:
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value += dataString[i];
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break;
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}
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}
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throw new TOMLError("Incomplete string literal");
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}
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_parseNumberOrDate(dataString: string): unknown {
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if (this._isDate(dataString)) {
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return new Date(dataString);
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}
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if (this._isLocalTime(dataString)) {
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return dataString;
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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 !== false && !isNaN(testNumber as number)) {
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return testNumber;
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}
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return String(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);
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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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const kv = this._processDeclaration(line);
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const key = kv.key;
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const 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: Record<string, unknown>): 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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if (k) {
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let v = obj[k];
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const pathDeclaration = this._parseDeclarationName(k);
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delete obj[k];
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if (pathDeclaration.length > 1) {
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const shift = pathDeclaration.shift();
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if (shift) {
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k = shift.replace(/"/g, "");
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v = this._unflat(pathDeclaration, v as Record<string, unknown>);
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}
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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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// deno-lint-ignore no-explicit-any
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this._propertyClean(v as any);
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}
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}
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}
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}
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parse(): Record<string, unknown> {
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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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|
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// Bare keys may only contain ASCII letters,
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|
// ASCII digits, underscores, and dashes (A-Za-z0-9_-).
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|
function joinKeys(keys: string[]): string {
|
|
// Dotted keys are a sequence of bare or quoted keys joined with a dot.
|
|
// This allows for grouping similar properties together:
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return keys
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.map((str: string): string => {
|
|
return str.match(/[^A-Za-z0-9_-]/) ? `"${str}"` : str;
|
|
})
|
|
.join(".");
|
|
}
|
|
|
|
class Dumper {
|
|
maxPad = 0;
|
|
srcObject: Record<string, unknown>;
|
|
output: string[] = [];
|
|
constructor(srcObjc: Record<string, unknown>) {
|
|
this.srcObject = srcObjc;
|
|
}
|
|
dump(): string[] {
|
|
// deno-lint-ignore no-explicit-any
|
|
this.output = this._parse(this.srcObject as any);
|
|
this.output = this._format();
|
|
return this.output;
|
|
}
|
|
_parse(obj: Record<string, unknown>, keys: string[] = []): string[] {
|
|
const out = [];
|
|
const props = Object.keys(obj);
|
|
const propObj = props.filter((e: string): boolean => {
|
|
if (obj[e] instanceof Array) {
|
|
const d: unknown[] = obj[e] as unknown[];
|
|
return !this._isSimplySerializable(d[0]);
|
|
}
|
|
return !this._isSimplySerializable(obj[e]);
|
|
});
|
|
const propPrim = props.filter((e: string): boolean => {
|
|
if (obj[e] instanceof Array) {
|
|
const d: unknown[] = obj[e] as unknown[];
|
|
return this._isSimplySerializable(d[0]);
|
|
}
|
|
return this._isSimplySerializable(obj[e]);
|
|
});
|
|
const k = propPrim.concat(propObj);
|
|
for (let i = 0; i < k.length; i++) {
|
|
const prop = k[i];
|
|
const value = obj[prop];
|
|
if (value instanceof Date) {
|
|
out.push(this._dateDeclaration([prop], value));
|
|
} else if (typeof value === "string" || value instanceof RegExp) {
|
|
out.push(this._strDeclaration([prop], value.toString()));
|
|
} else if (typeof value === "number") {
|
|
out.push(this._numberDeclaration([prop], value));
|
|
} else if (typeof value === "boolean") {
|
|
out.push(this._boolDeclaration([prop], value));
|
|
} else if (
|
|
value instanceof Array &&
|
|
this._isSimplySerializable(value[0])
|
|
) {
|
|
// only if primitives types in the array
|
|
out.push(this._arrayDeclaration([prop], value));
|
|
} else if (
|
|
value instanceof Array &&
|
|
!this._isSimplySerializable(value[0])
|
|
) {
|
|
// array of objects
|
|
for (let i = 0; i < value.length; i++) {
|
|
out.push("");
|
|
out.push(this._headerGroup([...keys, prop]));
|
|
out.push(...this._parse(value[i], [...keys, prop]));
|
|
}
|
|
} else if (typeof value === "object") {
|
|
out.push("");
|
|
out.push(this._header([...keys, prop]));
|
|
if (value) {
|
|
const toParse = value as Record<string, unknown>;
|
|
out.push(...this._parse(toParse, [...keys, prop]));
|
|
}
|
|
// out.push(...this._parse(value, `${path}${prop}.`));
|
|
}
|
|
}
|
|
out.push("");
|
|
return out;
|
|
}
|
|
_isSimplySerializable(value: unknown): boolean {
|
|
return (
|
|
typeof value === "string" ||
|
|
typeof value === "number" ||
|
|
typeof value === "boolean" ||
|
|
value instanceof RegExp ||
|
|
value instanceof Date ||
|
|
value instanceof Array
|
|
);
|
|
}
|
|
_header(keys: string[]): string {
|
|
return `[${joinKeys(keys)}]`;
|
|
}
|
|
_headerGroup(keys: string[]): string {
|
|
return `[[${joinKeys(keys)}]]`;
|
|
}
|
|
_declaration(keys: string[]): string {
|
|
const title = joinKeys(keys);
|
|
if (title.length > this.maxPad) {
|
|
this.maxPad = title.length;
|
|
}
|
|
return `${title} = `;
|
|
}
|
|
_arrayDeclaration(keys: string[], value: unknown[]): string {
|
|
return `${this._declaration(keys)}${JSON.stringify(value)}`;
|
|
}
|
|
_strDeclaration(keys: string[], value: string): string {
|
|
return `${this._declaration(keys)}"${value}"`;
|
|
}
|
|
_numberDeclaration(keys: string[], value: number): string {
|
|
switch (value) {
|
|
case Infinity:
|
|
return `${this._declaration(keys)}inf`;
|
|
case -Infinity:
|
|
return `${this._declaration(keys)}-inf`;
|
|
default:
|
|
return `${this._declaration(keys)}${value}`;
|
|
}
|
|
}
|
|
_boolDeclaration(keys: string[], value: boolean): string {
|
|
return `${this._declaration(keys)}${value}`;
|
|
}
|
|
_dateDeclaration(keys: string[], value: Date): string {
|
|
function dtPad(v: string, lPad = 2): string {
|
|
return v.padStart(lPad, "0");
|
|
}
|
|
const m = dtPad((value.getUTCMonth() + 1).toString());
|
|
const d = dtPad(value.getUTCDate().toString());
|
|
const h = dtPad(value.getUTCHours().toString());
|
|
const min = dtPad(value.getUTCMinutes().toString());
|
|
const s = dtPad(value.getUTCSeconds().toString());
|
|
const ms = dtPad(value.getUTCMilliseconds().toString(), 3);
|
|
// formatted date
|
|
const fData = `${value.getUTCFullYear()}-${m}-${d}T${h}:${min}:${s}.${ms}`;
|
|
return `${this._declaration(keys)}${fData}`;
|
|
}
|
|
_format(): string[] {
|
|
const rDeclaration = /(.*)\s=/;
|
|
const out = [];
|
|
for (let i = 0; i < this.output.length; i++) {
|
|
const l = this.output[i];
|
|
// we keep empty entry for array of objects
|
|
if (l[0] === "[" && l[1] !== "[") {
|
|
// empty object
|
|
if (this.output[i + 1] === "") {
|
|
i += 1;
|
|
continue;
|
|
}
|
|
out.push(l);
|
|
} else {
|
|
const m = rDeclaration.exec(l);
|
|
if (m) {
|
|
out.push(l.replace(m[1], m[1].padEnd(this.maxPad)));
|
|
} else {
|
|
out.push(l);
|
|
}
|
|
}
|
|
}
|
|
// Cleaning multiple spaces
|
|
const cleanedOutput = [];
|
|
for (let i = 0; i < out.length; i++) {
|
|
const l = out[i];
|
|
if (!(l === "" && out[i + 1] === "")) {
|
|
cleanedOutput.push(l);
|
|
}
|
|
}
|
|
return cleanedOutput;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stringify dumps source object into TOML string and returns it.
|
|
* @param srcObj
|
|
*/
|
|
export function stringify(srcObj: Record<string, unknown>): string {
|
|
return new Dumper(srcObj).dump().join("\n");
|
|
}
|
|
|
|
/**
|
|
* Parse parses TOML string into an object.
|
|
* @param tomlString
|
|
*/
|
|
export function parse(tomlString: string): Record<string, unknown> {
|
|
// File is potentially using EOL CRLF
|
|
tomlString = tomlString.replace(/\r\n/g, "\n").replace(/\\\n/g, "\n");
|
|
return new Parser(tomlString).parse();
|
|
}
|