Fix crashing on invalid path resolution

src/main/java/com/github/hhhzzzsss/songplayer/Util.java

@@ -14,6 +14,7 @@ import net.minecraft.text.Text;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
+import java.nio.file.InvalidPathException;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
@@ -31,6 +32,15 @@ public class Util {
         catch (IOException e) {}
     }
 
+    public static Path resolveWithIOException(Path path, String other) throws IOException {
+        try {
+            return path.resolve(other);
+        }
+        catch (InvalidPathException e) {
+            throw new IOException(e.getMessage());
+        }
+    }
+
     public static class LimitedSizeInputStream extends InputStream {
         private final InputStream original;
         private final long maxSize;
@@ -113,7 +123,12 @@ public class Util {
         Path dir = SongPlayer.SONG_DIR;
         if (lastSlash >= 0) {
             dirString = arg.substring(0, lastSlash+1);
-            dir = dir.resolve(dirString);
+            try {
+                dir = resolveWithIOException(dir, dirString);
+            }
+            catch (IOException e) {
+                return null;
+            }
         }
 
         Stream<Path> songFiles;
@@ -166,7 +181,12 @@ public class Util {
         Path dir = SongPlayer.SONG_DIR;
         if (lastSlash >= 0) {
             dirString = arg.substring(0, lastSlash+1);
-            dir = dir.resolve(dirString);
+            try {
+                dir = resolveWithIOException(dir, dirString);
+            }
+            catch (IOException e) {
+                return null;
+            }
         }
         else {
             dirString = "";

src/main/java/com/github/hhhzzzsss/songplayer/mixin/ChatInputSuggestorMixin.java

@@ -44,7 +44,13 @@ public class ChatInputSuggestorMixin {
         }
 
         int wordStart = getStartOfCurrentWord(preStr);
-        CompletableFuture<Suggestions> suggestions = CommandProcessor.handleSuggestions(preStr, new SuggestionsBuilder(preStr, wordStart));
+        CompletableFuture<Suggestions> suggestions;
+        try {
+            suggestions = CommandProcessor.handleSuggestions(preStr, new SuggestionsBuilder(preStr, wordStart));
+        }
+        catch (Throwable e) {
+            suggestions = null;
+        }
         if (suggestions != null) {
             this.pendingSuggestions = suggestions;
             this.show(true);

src/main/java/com/github/hhhzzzsss/songplayer/song/Playlist.java

@@ -197,9 +197,9 @@ public class Playlist {
         return validateAndLoadIndex(directory);
     }
 
-    public static void createPlaylist(String playlist) {
-        Path playlistDir = SongPlayer.PLAYLISTS_DIR.resolve(playlist);
-        Util.createDirectoriesSilently(playlistDir);
+    public static void createPlaylist(String playlist) throws IOException {
+        Path playlistDir = Util.resolveWithIOException(SongPlayer.PLAYLISTS_DIR, playlist);
+        Files.createDirectories(playlistDir);
     }
 
     public static void addSong(Path directory, Path songFile) throws IOException {
@@ -214,7 +214,7 @@ public class Playlist {
         if (index.contains(songFile.getFileName().toString())) {
             throw new IOException("Playlist already contains a song by this name");
         }
-        Files.copy(songFile, directory.resolve(songFile.getFileName().toString()));
+        Files.copy(songFile, Util.resolveWithIOException(directory, songFile.getFileName().toString()));
         index.add(songFile.getFileName().toString());
         saveIndex(directory, index);
     }
@@ -223,7 +223,7 @@ public class Playlist {
         if (!Files.exists(directory)) {
             throw new IOException("Playlist does not exist");
         }
-        Path songFile = directory.resolve(songName);
+        Path songFile = Util.resolveWithIOException(directory, songName);
         if (!Files.exists(songFile)) {
             throw new IOException("Playlist does not contain a song by this name");
         }
@@ -250,8 +250,8 @@ public class Playlist {
         if (pos < 0 || pos >= index.size()) {
             throw new IOException("Index out of bounds");
         }
-        Path oldPath = directory.resolve(index.get(pos));
-        Files.move(oldPath, directory.resolve(newName));
+        Path oldPath = Util.resolveWithIOException(directory, index.get(pos));
+        Files.move(oldPath, Util.resolveWithIOException(directory, newName));
         index.set(pos, newName);
         saveIndex(directory, index);
         return oldPath.getFileName().toString();

src/main/java/com/github/hhhzzzsss/songplayer/song/SongLoaderThread.java

@@ -1,6 +1,7 @@
 package com.github.hhhzzzsss.songplayer.song;
 
 import com.github.hhhzzzsss.songplayer.SongPlayer;
+import com.github.hhhzzzsss.songplayer.Util;
 import com.github.hhhzzzsss.songplayer.conversion.MidiConverter;
 import com.github.hhhzzzsss.songplayer.conversion.NBSConverter;
 
@@ -83,7 +84,7 @@ public class SongLoaderThread extends Thread{
 		}
 	}
 
-	private Path getSongFile(String name) {
-		return SongPlayer.SONG_DIR.resolve(name);
+	private Path getSongFile(String name) throws IOException {
+		return Util.resolveWithIOException(SongPlayer.SONG_DIR, name);
 	}
 }