Created
August 8, 2020 02:02
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| const child_process = require('child_process') | |
| function run_script(command, args, realtimeCallback = (log, type) => {console.log(log)}) { | |
| return new Promise((resolve) => { | |
| let child = child_process.spawn(command, args) | |
| let scriptOutput = "" | |
| child.stdout.setEncoding('utf8') | |
| child.stdout.on('data', function (data) { | |
| realtimeCallback(data, 'stdout') | |
| data = data.toString() | |
| scriptOutput += data | |
| }) | |
| child.stderr.setEncoding('utf8') | |
| child.stderr.on('data', function (data) { | |
| realtimeCallback(data, 'stderr') | |
| data = data.toString() | |
| scriptOutput += data | |
| }) | |
| child.on('close', function (code) { | |
| resolve({output: scriptOutput, code: code}) | |
| }) | |
| child.on('error', (code)=>{ | |
| resolve({output: scriptOutput, code: code}) | |
| }) | |
| }) | |
| } | |
| async function runAndWriteOutputAsHtml(res, name, command, args) { | |
| res.setHeader('Content-Type', 'text/html') | |
| res.write(`<!doctype html><html><head><meta charset="UTF-8"><title>Run - ${name}</title></head><body><pre>`) | |
| let result = await run_script(command, args, (log, type) => { | |
| if (type === 'stderr') { | |
| res.write('.') | |
| } else { | |
| res.write(`${log}\n`) | |
| } | |
| }) | |
| res.write('</pre>') | |
| if (result.code!==0) { | |
| res.write(`<p style="color: red">Process failed with code ${result.code}!</p><pre>\n${result.output}\n</pre>`) | |
| } | |
| res.write('</body></html>') | |
| res.end() | |
| } |
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Spawn a sub-process in NodeJS, attach to the stdout and stderr and wait for the process to close.
Write the stdout to a HTML page with '.' for the errors unless there is a non-0 exit code.