Add auto mixins (#607)

Add auto mixins #607

1 files changed, 132 insertions, 0 deletions

diff --git a/src/main/java/at/hannibal2/skyhanni/mixins/init/SkyhanniMixinPlugin.java b/src/main/java/at/hannibal2/skyhanni/mixins/init/SkyhanniMixinPlugin.java
new file mode 100644
index 000000000..17cfb45e6
--- /dev/null
+++ b/src/main/java/at/hannibal2/skyhanni/mixins/init/SkyhanniMixinPlugin.java
@@ -0,0 +1,132 @@
+package at.hannibal2.skyhanni.mixins.init;
+
+import org.spongepowered.asm.lib.tree.ClassNode;
+import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
+import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Stream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+public class SkyhanniMixinPlugin implements IMixinConfigPlugin {
+    @Override
+    public void onLoad(String s) {
+
+    }
+
+    @Override
+    public String getRefMapperConfig() {
+        return null;
+    }
+
+    @Override
+    public boolean shouldApplyMixin(String s, String s1) {
+        return false;
+    }
+
+    @Override
+    public void acceptTargets(Set<String> set, Set<String> set1) {
+
+    }
+
+    public URL baseUrl(URL classUrl) {
+        String string = classUrl.toString();
+        if (classUrl.getProtocol().equals("jar")) {
+            try {
+                return new URL(string.substring(4).split("\\!")[0]);
+            } catch (MalformedURLException e) {
+                throw new RuntimeException(e);
+            }
+        }
+        if (string.endsWith(".class")) {
+            try {
+                return new URL(string.replace("\\", "/")
+                        .replace(getClass().getCanonicalName().replace(".", "/") + ".class", ""));
+            } catch (MalformedURLException e) {
+                throw new RuntimeException(e);
+            }
+        }
+        return classUrl;
+    }
+
+    String mixinBasePackage = "at.hannibal2.skyhanni.mixins.transformers.";
+    String mixinBaseDir = mixinBasePackage.replace(".", "/");
+
+    List<String> mixins = null;
+
+    public void tryAddMixinClass(String className) {
+        String norm = (className.endsWith(".class") ? className.substring(0, className.length() - ".class".length()) : className)
+                .replace("\\", "/")
+                .replace("/", ".");
+        if (norm.startsWith(mixinBasePackage) && !norm.endsWith(".")) {
+            mixins.add(norm.substring(mixinBasePackage.length()));
+        }
+    }
+
+    public void walkDir(Path file) {
+        System.out.println("Trying to find mixins from directory");
+        try (Stream<Path> classes = Files.walk(file.resolve(mixinBaseDir))) {
+            classes.map(it -> file.relativize(it).toString())
+                    .forEach(this::tryAddMixinClass);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public List<String> getMixins() {
+        if (mixins != null) return mixins;
+        System.out.println("Trying to discover mixins");
+        mixins = new ArrayList<>();
+        URL classUrl = getClass().getProtectionDomain().getCodeSource().getLocation();
+        System.out.println("Found classes at " + classUrl);
+        Path file;
+        try {
+            file = Paths.get(baseUrl(classUrl).toURI());
+        } catch (URISyntaxException e) {
+            throw new RuntimeException(e);
+        }
+        System.out.println("Base directory found at " + file);
+        if (Files.isDirectory(file)) {
+            walkDir(file);
+        } else {
+            walkJar(file);
+        }
+        System.out.println("Found mixins: " + mixins);
+
+        return mixins;
+    }
+
+    private void walkJar(Path file) {
+        System.out.println("Trying to find mixins from jar file");
+        try (ZipInputStream zis = new ZipInputStream(Files.newInputStream(file))) {
+            ZipEntry next;
+            while ((next = zis.getNextEntry()) != null) {
+                tryAddMixinClass(next.getName());
+                zis.closeEntry();
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void preApply(String s, ClassNode classNode, String s1, IMixinInfo iMixinInfo) {
+
+    }
+
+    @Override
+    public void postApply(String s, ClassNode classNode, String s1, IMixinInfo iMixinInfo) {
+
+    }
+}