ExifToolParser: new command to copy tags from source file to a destination file.

CCBUGS: 134486, 170693, 219856, 237504, 264210, 309341, 325458, 326408, 377622, 384092, 406540, 416516, 421464, 436286, 381967

core/libs/metadataengine/exiftool/exiftoolparser.h

@@ -157,6 +157,13 @@ public:
      */
     bool translationsList();
 
+    /**
+     * Copy group of tags from one source file to a destination file, following copy operations defined by 'copyOps'.
+     * 'copyOps' is a OR combination of ExifToolProcess::CopyTagsSource values.
+     * 'dst' must be a writable file format supported by ExifTool.
+     */
+    bool copyTags(const QString& src, const QString& dst, int copyOps);
+
     //@}
 
 private Q_SLOTS:

core/libs/metadataengine/exiftool/exiftoolparser_command.cpp

@@ -233,4 +233,68 @@ bool ExifToolParser::translationsList()
     return (d->startProcess(cmdArgs, ExifToolProcess::TRANSLATIONS_LIST));
 }
 
+bool ExifToolParser::copyTags(const QString& src, const QString& dst, int copyOps)
+{
+    QFileInfo sfi(src);
+
+    if (!sfi.exists())
+    {
+        return false;
+    }
+
+    QFileInfo dfi(src);
+
+    if (!dfi.exists())
+    {
+        return false;
+    }
+
+    QByteArrayList copyCmds;
+
+    if (copyOps & ExifToolProcess::COPY_EXIF)
+    {
+        copyCmds << QByteArray("-exif");
+    }
+
+    if (copyOps & ExifToolProcess::COPY_MAKERNOTES)
+    {
+        copyCmds << QByteArray("-makernotes");
+    }
+
+    if (copyOps & ExifToolProcess::COPY_IPTC)
+    {
+        copyCmds << QByteArray("-iptc");
+    }
+
+    if (copyOps & ExifToolProcess::COPY_XMP)
+    {
+        copyCmds << QByteArray("-xmp");
+    }
+
+    if (copyOps & ExifToolProcess::COPY_ALL)
+    {
+        copyCmds << QByteArray("-all:all");
+    }
+
+    if (copyCmds.isEmpty())
+    {
+        return false;
+    }
+
+    if (!d->prepareProcess())
+    {
+        return false;
+    }
+
+    QByteArrayList cmdArgs;
+
+    cmdArgs << QByteArray("-TagsFromFile");
+    cmdArgs << d->filePathEncoding(src);
+    cmdArgs << copyCmds;
+    cmdArgs << d->filePathEncoding(dst);
+    d->currentPath = sfi.path();
+
+    return (d->startProcess(cmdArgs, ExifToolProcess::COPY_TAGS));
+}
+
 } // namespace Digikam

core/libs/metadataengine/exiftool/exiftoolprocess.h

@@ -47,6 +47,9 @@ class DIGIKAM_EXPORT ExifToolProcess : public QObject
 
 public:
 
+    /**
+     * ExifTool actions to process.
+     */
     enum Action
     {
         LOAD_METADATA = 0,          ///< Load all metadata from a file with ExifTool.
@@ -55,10 +58,23 @@ public:
         APPLY_CHANGES_EXV,          ///< Apply tag changes in a file with ExifTool using an EXV container.
         READ_FORMATS,               ///< Return the list of readable ExifTool file formats.
         WRITE_FORMATS,              ///< Return the list of writable ExifTool file formats.
-        TRANSLATIONS_LIST,          ///< List of ExifTool languages avaialble for translations.
+        TRANSLATIONS_LIST,          ///< List of ExifTool languages available for translations.
+        COPY_TAGS,                  ///< Copy tags from one file to another one. See CopyTagsSource enum for details.
         NO_ACTION                   ///< Last value from this list.
     };
 
+    /**
+     * Possible operations to combine with COPY_TAGS action.
+     */
+    enum CopyTagsSource
+    {
+        COPY_EXIF       = 0x01,     ///< Copy all Exif Tags from source file.
+        COPY_MAKERNOTES = 0x02,     ///< Copy all Makernotes tags from source file.
+        COPY_IPTC       = 0x04,     ///< Copy all Iptc tags from source file.
+        COPY_XMP        = 0x08,     ///< Copy all Xmp tags from source file.
+        COPY_ALL        = 0x0A      ///< Copy all tags from source file.
+    };
+
 public:
 
     /**