StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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59 lines
1.3 KiB
59 lines
1.3 KiB
4 years ago
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var spawn = require('child_process').spawn
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function spawnPlease(command, args, stdin, options) {
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// if there are only three arguments and the third argument is an object, treat it as the options object and set stdin to null
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if(!options && typeof stdin === 'object') {
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options = stdin
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stdin = undefined
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}
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// defaults
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options = options || {}
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if(options.rejectOnError === undefined) {
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options.rejectOnError = true
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}
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var stdout = ''
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var stderr = ''
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var child = spawn(command, args, options)
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if(!spawnPlease.Promise) {
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throw new Error('No built-in Promise. You will need to use a Promise library and spawnPlease.Promise = Promise.')
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}
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return new spawnPlease.Promise(function (resolve, reject) {
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if(stdin !== undefined) {
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child.stdin.write(stdin)
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}
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child.stdin.end()
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child.stdout.on('data', function (data) {
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stdout += data
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})
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child.stderr.on('data', function (data) {
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stderr += data
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})
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if(options.rejectOnError) {
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child.addListener('error', reject)
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}
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child.on('close', function (code) {
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if(code !== 0 && options.rejectOnError) {
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reject(stderr)
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}
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else {
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resolve(stdout)
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}
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})
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})
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}
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spawnPlease.Promise = typeof Promise !== 'undefined' ? Promise : null
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module.exports = spawnPlease
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