Show lens model and creation date from EXIF / XMP segments

[thekid]

This pull request extracts the lens model from EXIF / XMP as seen in xp-framework/imaging#6 and adds it to the meta information shown along with the image.

Examples

Updating the meta data

To fetch and update the meta data for all existing entries, use the following script:

$ for i in $(ls -1 Albums/*/*.md) ; do xp update-metadata.script.php $(dirname $i)  ; done

<?php

use com\mongodb\MongoConnection;
use de\thekid\dialog\Preferences;
use de\thekid\dialog\import\Source;
use de\thekid\dialog\processing\{Files, Images, Videos, ResizeTo};
use io\File;
use util\cmd\Console;
use web\Environment;

$preferences= new Preferences(new Environment('.'), 'config');
$conn= new MongoConnection($preferences->get('mongo', 'uri'));
$entries= $conn->collection($preferences->optional('mongo', 'db', 'dialog'), 'entries');

$files= (new Files())
  ->matching(['.jpg', '.jpeg', '.png', '.webp'], (new Images())
    ->targeting('preview', new ResizeTo(720, 'jpg'))
    ->targeting('thumb', new ResizeTo(1024, 'webp'))
    ->targeting('full', new ResizeTo(3840, 'webp'))
  )
  ->matching(['.mp4', '.mpeg', '.mov'], (new Videos())
    ->targeting('preview', new ResizeTo(720, 'jpg'))
    ->targeting('thumb', new ResizeTo(1024, 'webp'))
  )
;
$process= function($origin, $slug) use($entries, $files) {
  static $colors= ['-' => "\e[31m", '+' => "\e[32m"];

  $entry= $entries->find(['slug' => $slug])->first();
  $images= [];
  foreach ($entry['images'] ?? [] as $image) {
    $images[$image['name']]= $image;
  }

  $diff= 0;
  foreach ($files->in($origin) as $file => $processing) {
    $meta= $processing->meta($file);
    Console::writeLine(' => ', $slug, '/', $file->filename);

    // Compute and output difference
    $changes= [];
    foreach (array_diff_assoc($images[$file->filename]['meta'], $meta) as $key => $value) {
      $changes[$key]['-']= $value;
    }
    foreach (array_diff_assoc($meta, $images[$file->filename]['meta']) as $key => $value) {
      $changes[$key]['+']= $value;
    }
    foreach ($changes as $key => $operations) {
      foreach ($operations as $operation => $value) {
        Console::writeLine($colors[$operation], '   ', $operation, ' ', $key, ' => ', $value, "\e[0m");
      }
    }

    $images[$file->filename]['meta']= $meta;
    $diff+= sizeof($changes);
  }

  if ($diff) {
    Console::writeLine(' => ', $entries->update($entry->id(), ['$set' => ['images' => array_values($images)]]));
  } else {
    Console::writeLine(' => No changes to publish');
  }
};

$source= Source::in($argv[1]);
Console::writeLine("[+] \e[37;1m{$source->toString()}\e[0m");

// The entry itself
$process($source->origin(), $source->name());

// Check for children
foreach ($source->origin()->entries() as $path) {
  if ($path->isFolder() && (new File($path, 'content.md'))->exists()) {
    $process($path->asFolder(), $source->name().'/'.$path->name());
  }
}