The following code run fine on JPEG, Docx, zip and several other file formats. Then I try is on mpg-filer however, I am hit by a "Error: write EPIPE" that I am unable to debug. Using a try/catch construction also result in an uncaught exception.
The code:
var fs = require('fs')
const { spawn } = require('child_process')
var file = '/path/to/some/file.jpg'
var rs = fs.createReadStream(file)
const exiftool = spawn('exiftool', ['-json', '-']);
var exif = ''
exiftool.stdout.on('data', function(chunk) {
exif += chunk
})
exiftool.on('close', function(code) {
console.log('Sourcefile: %s', JSON.parse(exif)[0].SourceFile)
})
exiftool.on('error', function(error) {
console.log('exiftool has error: %s', error)
})
rs.pipe(exiftool.stdin)
The error when using mpg-files:
events.js:167
throw er; // Unhandled 'error' event
^
Error: write EPIPE
at WriteWrap.afterWrite [as oncomplete] (net.js:835:14)
Emitted 'error' event at:
at Socket.onerror (_stream_readable.js:687:12)
at Socket.emit (events.js:182:13)
at onwriteError (_stream_writable.js:431:12)
at onwrite (_stream_writable.js:456:5)
at _destroy (internal/streams/destroy.js:40:7)
at Socket._destroy (net.js:605:3)
at Socket.destroy (internal/streams/destroy.js:32:8)
at WriteWrap.afterWrite [as oncomplete] (net.js:837:10)
edit: corrected the code due to issues found in the comments
This kind of error can happen when you try to write to a closed stream
Try/Catch isn't the way to handle stream errors, but you can do it this way:
rs.pipe(exiftool.stdin).on('error', function(e) {
console.log('rs.pipe has error: ' + e.message)
});