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52 lines
1.1 KiB
52 lines
1.1 KiB
5 years ago
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// read url/path in node
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'use strict'
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var request = require('request')
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var fs = require('fs')
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var isUrl = require('is-url')
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var URL = require('url')
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var isDataUrl = require('is-base64')
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var toab = require('to-array-buffer')
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module.exports = function load (str, clip) {
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return (isDataUrl(str, {mime: true}) ? loadDataUrl(str) : isUrl(str) ? loadUrl(str) : loadPath(str))
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}
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function loadDataUrl (url) {
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var ab = toab(url)
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return Promise.resolve(ab)
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}
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function loadUrl (url) {
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// handle protocol-relative URL
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url = URL.parse(url)
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if (!url.protocol) url.protocol = 'https'
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url = URL.format(url)
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return new Promise(function (yes, no) {
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request({
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url: url,
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// arraybuffer
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encoding: null
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}, function(err, resp, body) {
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if (err) return no(err)
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if (resp.statusCode !== 200) return no(new Error('Status code: ' + resp.statusCode))
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yes(body)
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})
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})
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}
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function loadPath (filename) {
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return new Promise(function (yes, no) {
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fs.readFile(filename, function(err, buffer) {
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if(err) {
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no(err)
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return
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}
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yes(buffer)
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})
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})
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}
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