精简后的项目：仅保留 api/ui 源码、文档、构建依赖

2026-09-11 16:11:09 +08:00
commit 490e85634e
457 changed files with 86862 additions and 0 deletions
@@ -0,0 +1,115 @@
+package exif
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/photoview/photoview/api/graphql/models"
+	"github.com/photoview/photoview/api/log"
+	"github.com/photoview/photoview/api/scanner/externaltools/exiftool"
+)
+
+var globalExifParser *exiftool.Exiftool
+var globalInit sync.Once
+
+func Initialize() (func(), error) {
+	var err error
+	globalInit.Do(func() {
+		globalExifParser, err = exiftool.New()
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	log.Info(nil, "Found exiftool.", "binary_path", globalExifParser.BinaryPath(), "version", globalExifParser.Version())
+
+	return func() {
+		globalMu.Lock()
+		defer globalMu.Unlock()
+
+		if globalExifParser == nil {
+			return
+		}
+
+		if err := globalExifParser.Close(); err != nil {
+			log.Error(nil, "Cleanup exiftool error", "error", err)
+			return
+		}
+		globalExifParser = nil
+	}, nil
+}
+
+var globalMu sync.Mutex
+
+func Parse(filepath string) (*models.MediaEXIF, error) {
+	globalMu.Lock()
+	defer globalMu.Unlock()
+
+	if globalExifParser == nil {
+		return nil, fmt.Errorf("no exif parser initialized")
+	}
+
+	var values struct {
+		exiftool.PhotoMeta
+		exiftool.TimeAll
+		exiftool.GPS
+	}
+	if err := globalExifParser.QueryJSONTagsByNumber(filepath, &values); err != nil {
+		return nil, err
+	}
+
+	values.PhotoMeta.SanitizeFloats()
+
+	ret := models.MediaEXIF{
+		Camera:          values.Model,
+		Maker:           values.Make,
+		Lens:            values.LensModel,
+		Iso:             values.ISO,
+		Flash:           values.Flash,
+		Orientation:     values.Orientation,
+		ExposureProgram: values.ExposureProgram,
+		Exposure:        values.ExposureTime,
+		Aperture:        values.Aperture,
+		FocalLength:     values.FocalLength,
+		Description:     values.ImageDescription,
+	}
+
+	dateShot := values.TimeAll.TimeInLocal()
+	if !dateShot.IsZero() {
+		ret.DateShot = new(dateShot)
+	}
+
+	offsetSec, ok := values.TimeAll.OffsetSecs(dateShot)
+	if ok {
+		ret.OffsetSecShot = &offsetSec
+	}
+
+	if values.GPS.IsValid() {
+		ret.GPSLatitude = values.GPS.GPSLatitude
+		ret.GPSLongitude = values.GPS.GPSLongitude
+	}
+
+	return &ret, nil
+}
+
+func MIMEType(filepath string) (string, error) {
+	globalMu.Lock()
+	defer globalMu.Unlock()
+
+	if globalExifParser == nil {
+		return "", fmt.Errorf("no exif parser initialized")
+	}
+
+	var mime exiftool.MIMEType
+	if err := globalExifParser.QueryJSONTagsByNumber(filepath, &mime); err != nil {
+		return "", err
+	}
+
+	if mime.MIMEType == nil {
+		return "", nil
+	}
+
+	return *mime.MIMEType, nil
+
+}