Initial archive export stub

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryDetailScene.java

@@ -64,11 +64,14 @@ import androidx.core.view.ViewCompat;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.android.material.progressindicator.CircularProgressIndicator;
 import com.google.android.material.snackbar.Snackbar;
+import com.hippo.UriArchiveAccessor;
 import com.hippo.app.EditTextDialogBuilder;
 import com.hippo.beerbelly.BeerBelly;
 import com.hippo.ehviewer.AppConfig;
+import com.hippo.ehviewer.BuildConfig;
 import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.EhDB;
+import com.hippo.ehviewer.GetText;
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
 import com.hippo.ehviewer.UrlOpener;
@@ -105,6 +108,7 @@ import com.hippo.text.URLImageGetter;
 import com.hippo.util.AppHelper;
 import com.hippo.util.ClipboardUtil;
 import com.hippo.util.ExceptionUtils;
+import com.hippo.util.IoThreadPoolExecutor;
 import com.hippo.util.ReadableTime;
 import com.hippo.view.ViewTransition;
 import com.hippo.widget.AutoWrapLayout;
@@ -537,6 +541,44 @@ public class GalleryDetailScene extends ToolbarScene implements View.OnClickList
                         voteTag(builder.getText().trim(), 1);
                         dialog.dismiss();
                     });
+        } else if (itemId == R.id.action_export) {
+            ActivityResultLauncher<String> exportLauncher = registerForActivityResult(
+                    new ActivityResultContracts.CreateDocument(),
+                    uri -> {
+                        if (uri != null) {
+                            try {
+                                // grantUriPermission might throw RemoteException on MIUI
+                                requireActivity().grantUriPermission(BuildConfig.APPLICATION_ID, uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+                            } catch (Exception e) {
+                                ExceptionUtils.throwIfFatal(e);
+                                e.printStackTrace();
+                            }
+                            try {
+                                AlertDialog alertDialog = new MaterialAlertDialogBuilder(requireActivity())
+                                        .setCancelable(false)
+                                        .setView(R.layout.preference_dialog_task)
+                                        .show();
+                                IoThreadPoolExecutor.getInstance().execute(() -> {
+                                    boolean success = false;
+                                    Activity activity = getActivity();
+                                    if (activity != null) {
+                                        activity.runOnUiThread(() -> {
+                                            if (alertDialog.isShowing()) {
+                                                alertDialog.dismiss();
+                                            }
+                                            showTip(
+                                                    (success)
+                                                            ? GetText.getString(R.string.settings_advanced_export_data_to, uri.toString())
+                                                            : GetText.getString(R.string.settings_advanced_export_data_failed),
+                                                    BaseScene.LENGTH_SHORT);
+                                        });
+                                    }
+                                });
+                            } catch (Exception e) {
+                                showTip(R.string.settings_advanced_export_data_failed, BaseScene.LENGTH_SHORT);
+                            }
+                        }
+                    });
         }
         return true;
     }

app/src/main/res/menu/scene_gallery_detail.xml

@@ -28,4 +28,8 @@
         android:id="@+id/action_open_in_other_app"
         android:title="@string/open_in_other_app" />
 
+    <item
+        android:id="@+id/action_export"
+        android:title="@string/export" />
+
 </menu>

app/src/main/res/values-zh-rCN/strings.xml

@@ -762,4 +762,5 @@
 
     <string name="show_library_version">依赖库之版本</string>
     <string name="settings_privacy_require_unlock">需要解锁</string>
+    <string name="export">导出</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -826,4 +826,5 @@
 
     <string name="show_library_version">Library Version</string>
     <string name="settings_privacy_require_unlock">Require Unlock</string>
+    <string name="export">Export</string>
 </resources>

native/src/main/java/com/hippo/UriArchiveAccessor.java

@@ -102,4 +102,18 @@ public class UriArchiveAccessor implements Closeable {
             }
         }
     }
+
+    private static native boolean compressDirToOutStream(String dirname, int format, OutputStream os);
+
+    public static synchronized boolean exportGalleryArchive(String dirName, int format, Uri target, Context context) {
+        try {
+            OutputStream os = context.getContentResolver().openOutputStream(target);
+            compressDirToOutStream(dirName, format, os);
+            os.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+            return false;
+        }
+        return true;
+    }
 }

native/src/main/jni/archive.c

@@ -164,4 +164,10 @@ Java_com_hippo_UriArchiveAccessor_extracttoOutputStream(JNIEnv *env, jobject thi
     archive_read_close(arc->archive);
     archive_destroy_inst(arc);
     return 0;
+}
+
+JNIEXPORT jboolean JNICALL
+Java_com_hippo_UriArchiveAccessor_compressDirToOutStream(JNIEnv *env, jclass clazz, jstring dirname,
+                                                         jint format, jobject os) {
+    return JNI_FALSE;
 }