CalebLewallen
83 lines
3.5 KiB
JavaScript
83 lines
3.5 KiB
JavaScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) IBM Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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(function (factory) {
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if (typeof module === "object" && typeof module.exports === "object") {
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var v = factory(require, exports);
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if (v !== undefined) module.exports = v;
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}
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else if (typeof define === "function" && define.amd) {
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define(["require", "exports"], factory);
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}
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})(function (require, exports) {
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.toYamlStringScalar = void 0;
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function toYamlStringScalar(s, preferSingleQuote = false) {
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const quote = preferSingleQuote ? "'" : '"';
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// empty string
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if (s.length === 0) {
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return `${quote}${quote}`;
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}
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// single quote character
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if (s.length === 1 && s === '"') {
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return '"\\""';
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}
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// literal quote strings like "" or ''
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if (s.length === 2 && ((s[0] === '"' && s[1] === '"') || (s[0] === "'" && s[1] === "'"))) {
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return s[0] === '"' ? '"\\"\\""' : `"''"`;
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}
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// check if the string is already a properly quoted YAML string
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if (s.length >= 2) {
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const firstChar = s[0];
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const lastChar = s[s.length - 1];
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if ((firstChar === '"' && lastChar === '"') || (firstChar === "'" && lastChar === "'")) {
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return s;
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}
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}
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// strings containing quotes or backslashes
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if (/["\\]/.test(s)) {
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return JSON.stringify(s);
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}
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// support YAML spec 1.1 boolean values and null
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if (/^(?:on|off|true|false|yes|no|null|~)$/i.test(s)) {
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return `${quote}${s}${quote}`;
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}
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// numeric values: integer/float, hex (0x), and octal (0o or YAML 1.1 style 0[0-7]+)
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if (/^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$/.test(s) ||
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/^0x[0-9a-fA-F]+$/.test(s) ||
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/^0o[0-7]+$/.test(s) ||
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/^0[0-7]+$/.test(s)) {
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return `"${s}"`;
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}
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// leading/trailing whitespaces need quoting
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if (/^\s|\s$/.test(s)) {
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return preferSingleQuote ? `'${s.replace(/'/g, "''")}'` : JSON.stringify(s);
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}
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// comment indicator
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if (/(?:^|\s)#/.test(s)) {
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return preferSingleQuote ? `'${s.replace(/'/g, "''")}'` : JSON.stringify(s);
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}
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// reserved indicators that cannot start a plain scalar
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if (/^[\][{}#&*!|>'"%@`]/.test(s)) {
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return preferSingleQuote ? `'${s.replace(/'/g, "''")}'` : JSON.stringify(s);
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}
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// -, ?, or : followed by space or end
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if (/^[-?:](\s|$)/.test(s)) {
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return preferSingleQuote ? `'${s.replace(/'/g, "''")}'` : JSON.stringify(s);
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}
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// colon in middle (mapping key indicator)
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// e.g. `foo: bar` or `foo : bar` needs quoting, but `foo:bar` does not
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if (/(?:^|[^:]):(?:\s|$)/.test(s)) {
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return preferSingleQuote ? `'${s.replace(/'/g, "''")}'` : JSON.stringify(s);
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}
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// newlines, tabs, or carriage return
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if (/[\n\t\r]/.test(s)) {
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return JSON.stringify(s);
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}
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return s;
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}
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exports.toYamlStringScalar = toYamlStringScalar;
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});
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//# sourceMappingURL=yamlScalar.js.map
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