Reinstate java API removed in 1.10.8 (#1697)

* Revert java API removal with JNI private function

* Fix name typo

* Correct format

1 files changed, 68 insertions, 0 deletions

diff --git a/java/src/jni/h5util.c b/java/src/jni/h5util.c
index b684d05..4568880 100644
--- a/java/src/jni/h5util.c
+++ b/java/src/jni/h5util.c
@@ -3512,6 +3512,74 @@ done:
 
 /*
  * Class:     hdf_hdf5lib_H5
+ * Method:    _H5export_dataset_string
+ * Signature: (Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;I)V
+ */
+JNIEXPORT void JNICALL
+Java_hdf_hdf5lib_H5__1H5export_1dataset_1string(JNIEnv *env, jclass clss, jstring file_export_name,
+                                                jstring file_name, jstring object_path, jint binary_order)
+{
+    const char *file_export = NULL;
+    const char *fileName    = NULL;
+    const char *object_name = NULL;
+    jboolean    isCopy;
+    herr_t      ret_val    = FAIL;
+    hid_t       file_id    = H5I_INVALID_HID;
+    hid_t       dataset_id = H5I_INVALID_HID;
+    FILE *      stream     = NULL;
+
+    UNUSED(clss);
+
+    if (NULL == file_export_name)
+        H5_NULL_ARGUMENT_ERROR(ENVONLY, "H5export_dataset: file_export_name is NULL");
+
+    if (NULL == file_name)
+        H5_NULL_ARGUMENT_ERROR(ENVONLY, "H5export_dataset: file_name is NULL");
+
+    if (NULL == object_path)
+        H5_NULL_ARGUMENT_ERROR(ENVONLY, "H5export_dataset: object_path is NULL");
+
+    PIN_JAVA_STRING(ENVONLY, file_name, fileName, NULL, "H5export_dataset: file name not pinned");
+
+    if ((file_id = H5Fopen(fileName, (unsigned)H5F_ACC_RDWR, (hid_t)H5P_DEFAULT)) < 0)
+        H5_LIBRARY_ERROR(ENVONLY);
+
+    PIN_JAVA_STRING(ENVONLY, object_path, object_name, &isCopy, "H5export_dataset: object_path not pinned");
+
+    if ((dataset_id = H5Dopen2(file_id, object_name, H5P_DEFAULT)) < 0)
+        H5_LIBRARY_ERROR(ENVONLY);
+
+    PIN_JAVA_STRING(ENVONLY, file_export_name, file_export, NULL,
+                    "H5export_dataset: file_export name not pinned");
+
+    if (NULL == (stream = HDfopen(file_export, "w+")))
+        H5_JNI_FATAL_ERROR(ENVONLY, "HDfopen failed");
+
+    if ((ret_val = h5str_dump_simple_dset(ENVONLY, stream, dataset_id, binary_order)) < 0)
+        H5_ASSERTION_ERROR(ENVONLY, "h5str_dump_simple_dset failed");
+
+    if (stream) {
+        HDfclose(stream);
+        stream = NULL;
+    }
+
+done:
+    if (stream)
+        HDfclose(stream);
+    if (file_export)
+        UNPIN_JAVA_STRING(ENVONLY, file_export_name, file_export);
+    if (object_name)
+        UNPIN_JAVA_STRING(ENVONLY, object_path, object_name);
+    if (fileName)
+        UNPIN_JAVA_STRING(ENVONLY, file_name, fileName);
+    if (dataset_id >= 0)
+        H5Dclose(dataset_id);
+    if (file_id >= 0)
+        H5Fclose(file_id);
+} /* end Java_hdf_hdf5lib_H5_H5export_1dataset */
+
+/*
+ * Class:     hdf_hdf5lib_H5
  * Method:    H5export_attribute
  * Signature: (Ljava/lang/String;JLjava/lang/String;I)V
  */