write to fd

cmd/plt-build/src/main/go/pltbuild.c

@@ -0,0 +1,26 @@
+#include "pltbuild.h"
+
+jint throwIOException( JNIEnv *env, char *message) {
+    jclass  exClass;
+    char *className = "java/io/IOException";
+
+    exClass = (*env)->FindClass(env, className);
+    return (*env)->ThrowNew(env, exClass, message);
+}
+
+JNIEXPORT void JNICALL Java_moe_rosa_planterette_jni_GoFile_write__ILnet_java_String_2(JNIEnv *env, jobject obj, jint fd, jstring str) {
+    char *s = (*env)->GetStringUTFChars(env, str, 0);
+    size_t sz = (*env)->GetStringUTFLength(env, str);
+
+    uintptr_t *errno_p = NULL;
+    char **err_str_p = NULL;
+
+    planterette_write(fd, s, sz, errno_p, err_str_p);
+
+    if(errno_p || *err_str_p ) {
+        throwIOException(env, **err_str_p ? *err_str_p : strerror(*errno_p));
+    }
+    
+    (*env)->ReleaseStringUTFChars(env, str, s);
+    free(err_str_p);
+}