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58 lines
1.5 KiB
58 lines
1.5 KiB
'use strict';
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const { parseContentType } = require('./utils.js');
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function getInstance(cfg) {
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const headers = cfg.headers;
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const conType = parseContentType(headers['content-type']);
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if (!conType)
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throw new Error('Malformed content type');
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for (const type of TYPES) {
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const matched = type.detect(conType);
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if (!matched)
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continue;
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const instanceCfg = {
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limits: cfg.limits,
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headers,
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conType,
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highWaterMark: undefined,
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fileHwm: undefined,
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defCharset: undefined,
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defParamCharset: undefined,
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preservePath: false,
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};
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if (cfg.highWaterMark)
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instanceCfg.highWaterMark = cfg.highWaterMark;
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if (cfg.fileHwm)
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instanceCfg.fileHwm = cfg.fileHwm;
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instanceCfg.defCharset = cfg.defCharset;
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instanceCfg.defParamCharset = cfg.defParamCharset;
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instanceCfg.preservePath = cfg.preservePath;
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return new type(instanceCfg);
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}
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throw new Error(`Unsupported content type: ${headers['content-type']}`);
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}
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// Note: types are explicitly listed here for easier bundling
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// See: https://github.com/mscdex/busboy/issues/121
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const TYPES = [
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require('./types/multipart'),
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require('./types/urlencoded'),
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].filter(function(typemod) { return typeof typemod.detect === 'function'; });
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module.exports = (cfg) => {
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if (typeof cfg !== 'object' || cfg === null)
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cfg = {};
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if (typeof cfg.headers !== 'object'
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|| cfg.headers === null
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|| typeof cfg.headers['content-type'] !== 'string') {
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throw new Error('Missing Content-Type');
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}
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return getInstance(cfg);
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};
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