精简后的项目：仅保留 api/ui 源码、文档、构建依赖

api/scanner/scanner_tasks/processing_tasks/counterpart_files_task.go

@@ -0,0 +1,62 @@
+package processing_tasks
+
+import (
+	"fmt"
+	"io/fs"
+
+	"github.com/photoview/photoview/api/scanner/media_encoding"
+	"github.com/photoview/photoview/api/scanner/media_type"
+	"github.com/photoview/photoview/api/scanner/scanner_task"
+	"github.com/photoview/photoview/api/utils"
+)
+
+type CounterpartFilesTask struct {
+	scanner_task.ScannerTaskBase
+}
+
+func (t CounterpartFilesTask) MediaFound(ctx scanner_task.TaskContext, fileInfo fs.FileInfo, mediaPath string) (skip bool, err error) {
+	fileType := media_type.GetMediaType(mediaPath)
+
+	if !fileType.IsSupported() {
+		return true, nil
+	}
+
+	if utils.EnvDisableRawProcessing.GetBool() {
+		if !fileType.IsWebCompatible() {
+			return true, nil
+		}
+
+		// Don't skip the JPEGs if raw processing is disabled. Treat them as standalone files.
+		return false, nil
+	}
+
+	if fileType.IsWebCompatible() {
+		_, existed := media_type.FindRawCounterpart(mediaPath)
+		if existed {
+			return true, nil
+		}
+	}
+
+	return false, nil
+}
+
+func (t CounterpartFilesTask) BeforeProcessMedia(ctx scanner_task.TaskContext, mediaData *media_encoding.EncodeMediaData) (scanner_task.TaskContext, error) {
+
+	mediaType := ctx.GetCache().GetMediaType(mediaData.Media.Path)
+	if mediaType == media_type.TypeUnknown {
+		return ctx, fmt.Errorf("scan for counterpart file %s failed: media type is %s", mediaData.Media.Path, mediaType)
+	}
+
+	if mediaType.IsWebCompatible() {
+		return ctx, nil
+	}
+
+	counterpartFile, ok := media_type.FindWebCounterpart(mediaData.Media.Path)
+	if !ok {
+		return ctx, nil
+	}
+
+	mediaData.CounterpartPath = &counterpartFile
+
+	return ctx, nil
+}