source: trunk/lang/java/jRpUnits.cc @ 4503

Last change on this file since 4503 was 3177, checked in by mmc, 8 years ago

Updated all of the copyright notices to reference the transfer to
the new HUBzero Foundation, LLC.

File size: 1.6 KB
Line 
1/*
2 * ======================================================================
3 *  AUTHOR:  Ben Rafferty, Purdue University
4 *  Copyright (c) 2004-2012  HUBzero Foundation, LLC
5 *
6 *  See the file "license.terms" for information on usage and
7 *  redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
8 * ======================================================================
9 */
10
11/*
12 * This file defines the native functions which are called by the java Units
13 * class methods, and in turn call the corresponding rappture RpUnits methods.
14 */
15
16#include "jRpUnits.h"
17#include "rappture.h"
18
19// convertString
20JNIEXPORT jstring JNICALL Java_rappture_Units_jRpUnitsConvert
21  (JNIEnv *env, jclass cls, jstring javaFromVal, jstring javaTo, jboolean units){
22  const char* nativeFromVal = env->GetStringUTFChars(javaFromVal, 0);
23  const char* nativeTo = env->GetStringUTFChars(javaTo, 0);
24  int err;
25  jclass ex;
26  std::string errorMsg;
27
28  // perform conversion
29  std::string retStr = RpUnits::convert(nativeFromVal, nativeTo,
30                                       (int)units, &err);
31
32  // raise a runtime exception on error
33  if (err){
34    ex = env->FindClass("java/lang/RuntimeException");
35    if (ex){
36      errorMsg = "Cannot convert ";
37      errorMsg += nativeFromVal;
38      errorMsg += " to ";
39      errorMsg += nativeTo;
40      env->ThrowNew(ex, errorMsg.c_str());
41    }
42    env->DeleteLocalRef(ex);
43  }
44
45  env->ReleaseStringUTFChars(javaFromVal, nativeFromVal);
46  env->ReleaseStringUTFChars(javaTo, nativeTo);
47
48  // create new java string and return
49  return (env->NewStringUTF(retStr.c_str()));
50}
51
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