45 lines
1.9 KiB
JavaScript
45 lines
1.9 KiB
JavaScript
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import {runGeneratorsSync} from '../transform/generator.js';
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import {joinToUint8Array, isUint8Array} from '../utils/uint-array.js';
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import {TYPE_TO_MESSAGE} from '../stdio/type.js';
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// Apply `stdin`/`input`/`inputFile` options, before spawning, in sync mode, by converting it to the `input` option
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export const addInputOptionsSync = (fileDescriptors, options) => {
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for (const fdNumber of getInputFdNumbers(fileDescriptors)) {
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addInputOptionSync(fileDescriptors, fdNumber, options);
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}
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};
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const getInputFdNumbers = fileDescriptors => new Set(Object.entries(fileDescriptors)
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.filter(([, {direction}]) => direction === 'input')
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.map(([fdNumber]) => Number(fdNumber)));
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const addInputOptionSync = (fileDescriptors, fdNumber, options) => {
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const {stdioItems} = fileDescriptors[fdNumber];
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const allStdioItems = stdioItems.filter(({contents}) => contents !== undefined);
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if (allStdioItems.length === 0) {
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return;
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}
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if (fdNumber !== 0) {
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const [{type, optionName}] = allStdioItems;
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throw new TypeError(`Only the \`stdin\` option, not \`${optionName}\`, can be ${TYPE_TO_MESSAGE[type]} with synchronous methods.`);
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}
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const allContents = allStdioItems.map(({contents}) => contents);
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const transformedContents = allContents.map(contents => applySingleInputGeneratorsSync(contents, stdioItems));
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options.input = joinToUint8Array(transformedContents);
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};
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const applySingleInputGeneratorsSync = (contents, stdioItems) => {
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const newContents = runGeneratorsSync(contents, stdioItems, 'utf8', true);
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validateSerializable(newContents);
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return joinToUint8Array(newContents);
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};
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const validateSerializable = newContents => {
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const invalidItem = newContents.find(item => typeof item !== 'string' && !isUint8Array(item));
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if (invalidItem !== undefined) {
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throw new TypeError(`The \`stdin\` option is invalid: when passing objects as input, a transform must be used to serialize them to strings or Uint8Arrays: ${invalidItem}.`);
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}
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};
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