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2887e416da
refs: TryGhost/Toolbox#147 * Replaces all references to isIgnitionError with isGhostError * Switches use of GhostError to InternalServerError - as GhostError is no longer public There are places where InternalServerError is not the valid error, and new errors should be added to the @tryghost/errors package to ensure that we can use semantically correct errors in those cases.
54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
const yaml = require('js-yaml');
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const tpl = require('@tryghost/tpl');
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const errors = require('@tryghost/errors');
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const messages = {
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parsingError: {
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message: 'Could not parse provided YAML file: {context}.',
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help: 'Check provided file for typos and fix the named issues.'
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},
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invalidYamlFormat: {
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message: 'YAML input cannot be a plain string. Check the format of your YAML file.',
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help: 'https://ghost.org/docs/themes/routing/'
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}
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};
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/**
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* Takes a YAML formatted string and parses it and returns a JSON Object
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* @param {String} file the YAML file utf8 encoded
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* @returns {Object} parsed
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*/
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module.exports = function parseYaml(file) {
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try {
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const parsed = yaml.load(file);
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// yaml.load passes almost every yaml code.
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// Because of that, it's hard to detect if there's an error in the file.
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// But one of the obvious errors is the plain string output.
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// Here we check if the user made this mistake.
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if (typeof parsed === 'string') {
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throw new errors.IncorrectUsageError({
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message: messages.invalidYamlFormat.message,
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help: messages.invalidYamlFormat.help
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});
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}
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return parsed;
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} catch (error) {
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if (errors.utils.isGhostError(error)) {
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throw error;
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}
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// CASE: parsing failed, `js-yaml` tells us exactly what and where in the
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// `reason` property as well as in the message.
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// As the file uploaded is invalid, the person uploading must fix this - it's a 4xx error
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throw new errors.IncorrectUsageError({
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message: tpl(messages.parsingError.message, {context: error.reason}),
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code: 'YAML_PARSER_ERROR',
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context: error.message,
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err: error,
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help: messages.parsingError.help
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});
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}
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};
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