1 /*
   2  * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
   3  */
   4 #include "config.h"
   5 
   6 #include <wtf/Vector.h>
   7 #include <wtf/text/WTFString.h>
   8 
   9 namespace WTF {
  10 
  11 // String conversions
  12 String::String(JNIEnv* env, const JLString &s)
  13 {
  14     if (!s) {
  15         m_impl = StringImpl::empty();
  16     } else {
  17         unsigned int len = env->GetStringLength(s);
  18         if (!len) {
  19             m_impl = StringImpl::empty();
  20         } else {
  21             const jchar* str = env->GetStringCritical(s, NULL);
  22             if (str) {
  23                 m_impl = StringImpl::create((const UChar*)str, len);
  24                 env->ReleaseStringCritical(s, str);
  25             } else {
  26                 m_impl = StringImpl::create(reinterpret_cast<const UChar*>(L"OME"), 3);
  27             }
  28         }
  29     }
  30 }
  31 
  32 JLString String::toJavaString(JNIEnv *env) const
  33 {
  34     if (isNull()) {
  35         return NULL;
  36     } else {
  37         const unsigned len = length();
  38         if (is8Bit()) {
  39             // Convert latin1 chars to unicode.
  40             Vector<jchar> jchars(len);
  41             for (unsigned i = 0; i < len; i++) {
  42                 jchars[i] = characterAt(i);
  43             }
  44             return env->NewString(jchars.data(), len);
  45         } else {
  46             return env->NewString((jchar*)characters16(), len);
  47         }
  48     }
  49 }
  50 
  51 } // namespace WTF