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Editing: Inverter.php

<?php
/**
 * Bundle inverter utility class.
 */
abstract class Loco_package_Inverter {
 
 /**
 * Get all Gettext files that are not configured and valid in the given bundle
 * @return array
 */
 public static function export( Loco_package_Bundle $bundle ){
 // search paths for inverted bundle will exclude global ignore paths, 
 // plus anything known to the current configuration which we'll add now.
 $finder = $bundle->getFileFinder();
 
 /* @var $project Loco_package_Project */
 foreach( $bundle as $project ){
 if( $file = $project->getPot() ){
 // excluding all extensions in case POT is actually a PO/MO pair
 foreach( ['pot','po','mo'] as $ext ){
 $file = $file->cloneExtension($ext); 
 if( $path = realpath( $file->getPath() ) ){
 $finder->exclude( $path );
 }
 }
 }
 foreach( $project->findLocaleFiles('po') as $file ){
 if( $path = realpath( $file->getPath() ) ){
 $finder->exclude( $path );
 }
 }
 foreach( $project->findLocaleFiles('mo') as $file ){
 if( $path = realpath( $file->getPath() ) ){
 $finder->exclude( $path );
 }
 }
 }
 // Do a deep scan of all files that haven't been seen, or been excluded:
 // This will include files in global directories and inside the bundle.
 return $finder->setRecursive(true)->followLinks(false)->group('po','mo','pot')->exportGroups();
 } 
 
 
 /**
 * Compile anything found under bundle root that isn't configured in $known
 * @return Loco_package_Bundle
 */
 public static function compile( Loco_package_Bundle $bundle ){
 
 $found = self::export($bundle);
 
 // done with original bundle now
 $bundle = clone $bundle;
 $bundle->clear();

// first iteration groups found files into common locations that should hopefully indicate translation sets
        $groups = [];
        $templates = [];
        $localised = [];
        $root = $bundle->getDirectoryPath();

/* @var $list Loco_fs_FileList */
 foreach( $found as $ext => $list ){
 /* @var $file Loco_fs_LocaleFile */
 foreach( $list as $file ){
 // printf("Found: %s \n", $file );
 // This file is NOT known to be part of a configured project
 $dir = $file->getParent();
 $key = $dir->getRelativePath( $root );
 //
 if( ! isset($groups[$key]) ){
 $groups[$key] = $dir;
 $templates[$key] = [];
 $localised[$key] = [];
 }
 // template should define single set of translations unique by directory and file prefix
 if( 'pot' === $ext ){
 $slug = $file->filename();
 $templates[$key][$slug] = true;
 }
 // else ideally PO/MO files will correspond to a template by common prefix
 else {
 $file = new Loco_fs_LocaleFile( $file );
 $slug = $file->getPrefix();
 if( $file->getLocale()->isValid() ){
 $localised[$key][$slug] = true;
 }
 // else could be some kind of non-standard template
 else {
 $slug = $file->filename();
 $templates[$key][$slug] = true;
 }
 }
 }
 }

unset($found);

// next iteration matches collected files together into likely project sets
 $unique = [];
 
 /* @var $list Loco_fs_Directory */
 foreach( $groups as $key => $dir ){
 // pair up all projects that match templates neatly to prefixed files
 foreach( $templates[$key] as $slug => $bool ){
 if( isset($localised[$key][$slug]) ){
 //printf("Perfect match on domain '%s' in %s \n", $slug, $key );
 $unique[$key][$slug] = $dir;
 // done with this perfectly matched set
 $templates[$key][$slug] = null;
 $localised[$key][$slug] = null;
 }
 }
 // pair up any unprefixed localised files
 if( isset($localised[$key]['']) ){
 $slug = 'unknown';
 // Match to first (hopefully only) template to establish a slug
 foreach( $templates[$key] as $_slug => $bool ){
 if( $bool ){
 $slug = $_slug;
 $templates[$key][$slug] = null;
 break; // <- not possible to know how multiple POTs might be paired up
 }
 }
 //printf("Pairing unprefixed files in %s to '%s' \n", $key, $slug );
 $unique[$key][$slug] = $dir;
 // done with unprefixed localised files in this directory
 $localised[$key][''] = null;
 }
 // add any orphaned translations (those with no template matched)
 foreach( $localised[$key] as $slug => $bool ){
 if( $bool ){
 // printf("Picked up orphoned locales in %s as '%s' \n", $key, $slug );
 $unique[$key][$slug] = $dir;
 }
 }
 // add any orphaned templates (those with no localised files matched)
 foreach( $templates[$key] as $slug => $bool ){
 if( $bool ){
 //printf("Picked up orphoned template in %s as '%s' \n", $key, $slug );
 $unique[$key][$slug] = $dir;
 }
 }
 }

unset( $groups, $localised, $templates );

// final iteration adds unique projects to bundle
        
        foreach( $unique as $key => $sets ){
            foreach( $sets as $slug => $dir ){
                $name = ucfirst( strtr( $slug, '-_', '  ' ) );
                $domain = new Loco_package_TextDomain( $slug );
                $project = $domain->createProject( $bundle, $name );
                $project->addTargetDirectory($dir);
                $bundle->addProject($project);
            }
            // TODO how to prevent overlapping sets by adding each other's files to exclude lists
        }
        
        
        return $bundle;
    }    
    
    
    
}

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