Fix save image filename for external archives

app/src/main/kotlin/com/hippo/ehviewer/gallery/ArchivePageLoader.kt

@@ -32,6 +32,7 @@ import com.hippo.ehviewer.jni.providePassword
 import com.hippo.ehviewer.jni.releaseByteBuffer
 import com.hippo.ehviewer.util.FileUtils
 import com.hippo.ehviewer.util.detectAds
+import com.hippo.ehviewer.util.displayName
 import com.hippo.files.openFileDescriptor
 import eu.kanade.tachiyomi.util.system.logcat
 import java.nio.ByteBuffer
@@ -75,7 +76,7 @@ suspend fun <T> useArchivePageLoader(
                 private val mutex = NamedMutex<Int>()
                 private val semaphore = Semaphore(4)
 
-                override val title by lazy { FileUtils.getNameFromFilename(file.name)!! }
+                override val title by lazy { FileUtils.getNameFromFilename(file.displayName)!! }
 
                 override fun getImageExtension(index: Int) = getExtension(index)
 

app/src/main/kotlin/com/hippo/ehviewer/util/PathUtils.kt

@@ -4,7 +4,10 @@ import android.content.ContentResolver
 import android.net.Uri
 import android.os.Environment
 import android.provider.DocumentsContract
+import androidx.core.provider.DocumentsContractCompat
+import arrow.core.Either
 import com.hippo.files.openFileDescriptor
+import com.hippo.files.toUri
 import okio.Path
 import splitties.init.appCtx
 
@@ -37,4 +40,19 @@ val Uri.displayPath: String?
         return toString()
     }
 
+val Path.displayName: String
+    get() {
+        val uri = toUri()
+        // The Path is constructed by us if the URI is a tree URI, so we don't need to query
+        if (uri.scheme != ContentResolver.SCHEME_FILE && !DocumentsContractCompat.isTreeUri(uri)) {
+            Either.catch {
+                val proj = arrayOf(DocumentsContract.Document.COLUMN_DISPLAY_NAME)
+                appCtx.contentResolver.query(uri, proj, null, null, null)?.use { c ->
+                    if (c.moveToNext()) return c.getString(0)
+                }
+            }
+        }
+        return name
+    }
+
 fun Path.sha1() = openFileDescriptor("r").use { com.hippo.ehviewer.jni.sha1(it.fd) }