cdk8s
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This is the core library of Cloud Development Kit (CDK) for Kubernetes (cdk8s). cdk8s apps synthesize into standard Kubernetes manifests which can be applied to any Kubernetes cluster.
103 lines (100 loc) • 3.99 kB
JavaScript
import { Composer } from './compose/composer.js';
import { Document } from './doc/Document.js';
import { prettifyError, YAMLParseError } from './errors.js';
import { warn } from './log.js';
import { isDocument } from './nodes/identity.js';
import { LineCounter } from './parse/line-counter.js';
import { Parser } from './parse/parser.js';
function parseOptions(options) {
const prettyErrors = options.prettyErrors !== false;
const lineCounter = options.lineCounter || (prettyErrors && new LineCounter()) || null;
return { lineCounter, prettyErrors };
}
/**
* Parse the input as a stream of YAML documents.
*
* Documents should be separated from each other by `...` or `---` marker lines.
*
* @returns If an empty `docs` array is returned, it will be of type
* EmptyStream and contain additional stream information. In
* TypeScript, you should use `'empty' in docs` as a type guard for it.
*/
function parseAllDocuments(source, options = {}) {
const { lineCounter, prettyErrors } = parseOptions(options);
const parser = new Parser(lineCounter?.addNewLine);
const composer = new Composer(options);
const docs = Array.from(composer.compose(parser.parse(source)));
if (prettyErrors && lineCounter)
for (const doc of docs) {
doc.errors.forEach(prettifyError(source, lineCounter));
doc.warnings.forEach(prettifyError(source, lineCounter));
}
if (docs.length > 0)
return docs;
return Object.assign([], { empty: true }, composer.streamInfo());
}
/** Parse an input string into a single YAML.Document */
function parseDocument(source, options = {}) {
const { lineCounter, prettyErrors } = parseOptions(options);
const parser = new Parser(lineCounter?.addNewLine);
const composer = new Composer(options);
// `doc` is always set by compose.end(true) at the very latest
let doc = null;
for (const _doc of composer.compose(parser.parse(source), true, source.length)) {
if (!doc)
doc = _doc;
else if (doc.options.logLevel !== 'silent') {
doc.errors.push(new YAMLParseError(_doc.range.slice(0, 2), 'MULTIPLE_DOCS', 'Source contains multiple documents; please use YAML.parseAllDocuments()'));
break;
}
}
if (prettyErrors && lineCounter) {
doc.errors.forEach(prettifyError(source, lineCounter));
doc.warnings.forEach(prettifyError(source, lineCounter));
}
return doc;
}
function parse(src, reviver, options) {
let _reviver = undefined;
if (typeof reviver === 'function') {
_reviver = reviver;
}
else if (options === undefined && reviver && typeof reviver === 'object') {
options = reviver;
}
const doc = parseDocument(src, options);
if (!doc)
return null;
doc.warnings.forEach(warning => warn(doc.options.logLevel, warning));
if (doc.errors.length > 0) {
if (doc.options.logLevel !== 'silent')
throw doc.errors[0];
else
doc.errors = [];
}
return doc.toJS(Object.assign({ reviver: _reviver }, options));
}
function stringify(value, replacer, options) {
let _replacer = null;
if (typeof replacer === 'function' || Array.isArray(replacer)) {
_replacer = replacer;
}
else if (options === undefined && replacer) {
options = replacer;
}
if (typeof options === 'string')
options = options.length;
if (typeof options === 'number') {
const indent = Math.round(options);
options = indent < 1 ? undefined : indent > 8 ? { indent: 8 } : { indent };
}
if (value === undefined) {
const { keepUndefined } = options ?? replacer ?? {};
if (!keepUndefined)
return undefined;
}
if (isDocument(value) && !_replacer)
return value.toString(options);
return new Document(value, _replacer, options).toString(options);
}
export { parse, parseAllDocuments, parseDocument, stringify };