Fix #360

HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java

@@ -27,6 +27,7 @@ import org.jackhuang.hmcl.auth.ServerDisconnectException;
 import org.jackhuang.hmcl.download.DefaultDependencyManager;
 import org.jackhuang.hmcl.download.MaintainTask;
 import org.jackhuang.hmcl.launch.*;
+import org.jackhuang.hmcl.mod.CurseCompletionException;
 import org.jackhuang.hmcl.mod.CurseCompletionTask;
 import org.jackhuang.hmcl.mod.ModpackConfiguration;
 import org.jackhuang.hmcl.setting.LauncherVisibility;
@@ -177,11 +178,18 @@ public final class LauncherHelper {
                         // because onStop will be invoked if tasks fail when the executor service shut down.
                         if (!Controllers.isStopped()) {
                             Controllers.closeDialog(launchingStepsPane);
-                            if (executor.getLastException() != null)
+                            Exception ex = executor.getLastException();
-                                Controllers.dialog(I18nException.getStackTrace(executor.getLastException()),
+                            if (ex != null) {
+                                String message;
+                                if (ex instanceof CurseCompletionException)
+                                    message = Launcher.i18n("modpack.type.curse.error");
+                                else
+                                    message = I18nException.getStackTrace(ex);
+                                Controllers.dialog(message,
                                         scriptFile == null ? Launcher.i18n("launch.failed") : Launcher.i18n("version.launch_script.failed"),
                                         MessageBox.ERROR_MESSAGE);
                             }
+                        }
                     });
                 }
                 launchingStepsPane.setExecutor(null);

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -204,6 +204,7 @@ modpack.task.install.error=Failed to install the modpack. Maybe the files is inc
 modpack.task.install.will=Install the modpack:
 modpack.type.curse=Curse
 modpack.type.curse.completion=Install relative files to Curse modpack
+modpack.type.curse.error=Unable to complete this Curse modpack. Please retry.
 modpack.type.hmcl=HMCL
 modpack.type.multimc=MultiMC
 modpack.unsupported=Unsupported modpack, only HMCL, MultiMC, Curse modpacks are supported.

HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties

@@ -204,6 +204,7 @@ modpack.task.install.error=安装失败，可能是整合包格式不正确或
 modpack.task.install.will=将会安装整合包：
 modpack.type.curse=Curse
 modpack.type.curse.completion=下载 Curse 整合包相关文件
+modpack.type.curse.error=未能完成 Curse 整合包的下载，请多次重试或设置代理
 modpack.type.hmcl=HMCL
 modpack.type.multimc=MultiMC
 modpack.unsupported=该整合包不被支持。仅 HMCL、MultiMC、Curse 整合包受支持。

HMCLCore/src/main/java/org/jackhuang/hmcl/mod/CurseCompletionException.java

@@ -0,0 +1,35 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2017  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.mod;
+
+public class CurseCompletionException extends Exception {
+    public CurseCompletionException() {
+    }
+
+    public CurseCompletionException(String message) {
+        super(message);
+    }
+
+    public CurseCompletionException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public CurseCompletionException(Throwable cause) {
+        super(cause);
+    }
+}

HMCLCore/src/main/java/org/jackhuang/hmcl/mod/CurseCompletionTask.java

@@ -24,9 +24,11 @@ import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.util.*;
 
 import java.io.File;
+import java.io.IOException;
 import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
@@ -96,6 +98,7 @@ public final class CurseCompletionTask extends Task {
         File root = repository.getVersionRoot(version);
         File run = repository.getRunDirectory(version);
 
+        AtomicBoolean flag = new AtomicBoolean(true);
         AtomicInteger finished = new AtomicInteger(0);
 
         // Because in China, Curse is too difficult to visit,
@@ -104,14 +107,32 @@ public final class CurseCompletionTask extends Task {
                 manifest.getFiles().parallelStream()
                         .map(file -> {
                             updateProgress(finished.incrementAndGet(), manifest.getFiles().size());
-                            return Lang.ignoringException(() -> file.setFileName(NetworkUtils.detectFileName(file.getUrl(), dependencyManager.getProxy())), file);
+                            if (StringUtils.isBlank(file.getFileName())) {
+                                try {
+                                    return file.withFileName(NetworkUtils.detectFileName(file.getUrl(), dependencyManager.getProxy()));
+                                } catch (IOException ioe) {
+                                    Logging.LOG.log(Level.WARNING, "Unable to fetch the file name of URL: " + file.getUrl(), ioe);
+                                    flag.set(false);
+                                    return file;
+                                }
+                            } else
+                                return file;
                         })
                         .collect(Collectors.toList()));
         FileUtils.writeText(new File(root, "manifest.json"), Constants.GSON.toJson(newManifest));
 
         for (CurseManifestFile file : newManifest.getFiles())
-            if (StringUtils.isNotBlank(file.getFileName()))
+            if (StringUtils.isNotBlank(file.getFileName())) {
-                dependencies.add(new FileDownloadTask(file.getUrl(), new File(run, "mods/" + file.getFileName()), dependencyManager.getProxy()));
+                File dest = new File(run, "mods/" + file.getFileName());
+                if (!dest.exists())
+                    dependencies.add(new FileDownloadTask(file.getUrl(), dest, dependencyManager.getProxy()));
+            }
+
+        // Let this task fail if the curse manifest has not been completed.
+        if (!flag.get())
+            dependencies.add(Task.of(() -> {
+                throw new CurseCompletionException();
+            }));
     }
 
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/mod/CurseManifestFile.java

@@ -82,7 +82,7 @@ public final class CurseManifestFile implements Validation {
         return NetworkUtils.toURL("https://minecraft.curseforge.com/projects/" + projectID + "/files/" + fileID + "/download");
     }
     
-    public CurseManifestFile setFileName(String fileName) {
+    public CurseManifestFile withFileName(String fileName) {
         return new CurseManifestFile(projectID, fileID, fileName, required);
     }
 

HMCLCore/src/main/java/org/jackhuang/hmcl/util/NetworkUtils.java

@@ -20,10 +20,8 @@ package org.jackhuang.hmcl.util;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.net.HttpURLConnection;
+import java.net.*;
-import java.net.MalformedURLException;
+import java.nio.charset.StandardCharsets;
-import java.net.Proxy;
-import java.net.URL;
 import java.util.Map;
 import java.util.Objects;
 import java.util.function.Supplier;
@@ -138,9 +136,9 @@ public final class NetworkUtils {
         String disposition = conn.getHeaderField("Content-Disposition");
         if (disposition == null || !disposition.contains("filename=")) {
             String u = conn.getURL().toString();
-            return substringAfterLast(u, '/');
+            return Lang.invoke(() -> URLDecoder.decode(substringAfterLast(u, '/'), StandardCharsets.UTF_8.name()));
         } else
-            return removeSurrounding(substringAfter(disposition, "filename="), "\"");
+            return Lang.invoke(() -> URLDecoder.decode(removeSurrounding(substringAfter(disposition, "filename="), "\""), StandardCharsets.UTF_8.name()));
     }
 
     public static URL toURL(String str) {