Add JNI

schemsearch-java/src/lib.rs

@@ -0,0 +1,34 @@
+#![no_mangle]
+
+use jni::JNIEnv;
+
+use jni::objects::{JClass, JString};
+
+use jni::sys::jstring;
+use schemsearch_lib::{search, SearchBehavior};
+
+pub extern "system" fn Java_SchemSearch_search<'local>(mut env: JNIEnv<'local>,
+    class: JClass<'local>,
+    schematic_path: JString<'local>,
+    pattern_path: JString<'local>) -> jstring {
+    let schematic_path: String = env.get_string(&schematic_path).expect("Couldn't get java string!").into();
+    let pattern_path: String = env.get_string(&pattern_path).expect("Couldn't get java string!").into();
+    let file = std::fs::File::open(schematic_path).expect("Failed to open file");
+    let schematic = &std::io::Read::bytes(file).map(|b| b.unwrap()).collect();
+    let file = std::fs::File::open(pattern_path).expect("Failed to open file");
+    let pattern = &std::io::Read::bytes(file).map(|b| b.unwrap()).collect();
+
+    let matches = search(schematic, pattern, SearchBehavior {
+        ignore_block_data: true,
+        ignore_block_entities: true,
+        ignore_entities: true,
+    });
+
+    let mut result = String::new();
+    for (x, y, z) in matches {
+        result.push_str(&format!("{}, {}, {};", x, y, z));
+    }
+    result.remove(result.len() - 1);
+    let output = env.new_string(result).expect("Couldn't create java string!");
+    output.into_raw()
+}