Set XMP-digiKam:Color label

index.js

const fs = require('fs');
const readline = require('readline');
const path = require('path');
const { spawnSync } = require('child_process');

// Ran 20180206 successfully
process.exit(0);

// exiftool -r -m -n -if '$Orientation != 1' -p '$Directory/$FileName' . -ext xmp -ext jpg > /tmp/imagefiles.txt
const stream = readline.createInterface({
 input: fs.createReadStream('/tmp/imagefiles.txt'),
 crlfDelay: Infinity
});

let data = {};

stream.on('line', line => {
 let {name, dir} = path.parse(line);
 if(name.match(/\./)) {
   name = path.basename(name, `.${name.split(/\./)[1]}`);
 }
 data[name] = Object.assign({count: 0, filePath: path.join(dir, name)}, data[name]);
 data[name].count++;
});

/* -XMP-digiKam:ColorLabel= (fixed values)
 1 - red
 2 - orange
 3 - yellow
 4 - green
 5 - blue
 6 - magenta
 7 - gray
 8 - black
 9 - white
*/

stream.on('close', () => {
 // If there is only a sidecar, ignore for now
 Object.keys(data).filter(v => data[v].count == 2).forEach(key => {
   let {filePath} = data[key];
   // Run exiftool to update files.
   ['jpg.xmp'].forEach(ext => {
     let {stdout, stderr, error} = spawnSync(
       `exiftool`,
       [
         '-n', '-XMP-digiKam:ColorLabel=1', `photographers/jboxman/${filePath}.${ext}`
     ]);
     console.log(`${filePath}: ${stdout} - ${stderr}`);
   });
 });
});