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+/*
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+---------------------------------------------------------------------------
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+Open Asset Import Library (ASSIMP)
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+---------------------------------------------------------------------------
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+
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+Copyright (c) 2006-2008, ASSIMP Development Team
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+
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+All rights reserved.
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+
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+Redistribution and use of this software in source and binary forms,
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+with or without modification, are permitted provided that the following
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+conditions are met:
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+
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+* Redistributions of source code must retain the above
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+ copyright notice, this list of conditions and the
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+ following disclaimer.
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+
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+* Redistributions in binary form must reproduce the above
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+ copyright notice, this list of conditions and the
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+ following disclaimer in the documentation and/or other
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+ materials provided with the distribution.
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+
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+* Neither the name of the ASSIMP team, nor the names of its
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+ contributors may be used to endorse or promote products
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+ derived from this software without specific prior
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+ written permission of the ASSIMP Development Team.
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+
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+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+---------------------------------------------------------------------------
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+*/
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+
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+/** @file Implementation of the JNI API for jAssimp */
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+
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+#if (defined ASSIMP_JNI_EXPORT)
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+
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+#include "JNIEnvironment.h"
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+#include "JNILogger.h"
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+
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+using namespace Assimp;
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+
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+namespace Assimp {
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+namespace JNIBridge {
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+
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+
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+/*static*/ jclass JNIEnvironment::Class_java_lang_String = 0;
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+/*static*/ jmethodID JNIEnvironment::MID_String_getBytes = 0;
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+/*static*/ jmethodID JNIEnvironment::MID_String_init = 0;
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+
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+
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+// ------------------------------------------------------------------------------------------------
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+bool JNIEnvironment::AttachToCurrentThread (JNIEnv* pcEnv)
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+{
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+ ai_assert(NULL != pcEnv);
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+
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+ // first initialize some members
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+ if (0 == Class_java_lang_String)
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+ {
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+ if( 0 == (Class_java_lang_String = pcEnv->FindClass("java.lang.String")))
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+ return false;
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+ }
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+ if (0 == MID_String_getBytes)
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+ {
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+ if( 0 == (MID_String_getBytes = pcEnv->GetStaticMethodID(
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+ Class_java_lang_String,"getBytes","()[byte")))
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+ return false;
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+ }
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+ if (0 == MID_String_init)
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+ {
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+ if( 0 == (MID_String_init = pcEnv->GetStaticMethodID(
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+ Class_java_lang_String,"String","([byte)V")))
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+ return false;
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+ }
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+
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+ // now initialize the thread-local storage
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+ if (NULL == this->ptr.get())
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+ {
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+ // attach to the current thread
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+ JavaVM* vm;
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+ pcEnv->GetJavaVM(&vm);
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+ vm->AttachCurrentThread((void **) &pcEnv, NULL);
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+
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+ this->ptr.reset(new JNIThreadData(pcEnv));
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+ }
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+ // increase the reference counter
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+ else this->ptr->m_iNumRef++;
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+
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+ // attach the logger
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+ ((JNILogDispatcher*)DefaultLogger::get())->OnAttachToCurrentThread(this->ptr.get());
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+
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+ return true;
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+}
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+// ------------------------------------------------------------------------------------------------
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+bool JNIEnvironment::DetachFromCurrentThread ()
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+{
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+ ai_assert(NULL != pcEnv);
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+
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+ // detach the logger
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+ ((JNILogDispatcher*)DefaultLogger::get())->OnDetachFromCurrentThread(this->ptr.get());
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+
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+ // decrease the reference counter
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+ if (NULL != this->ptr.get())
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+ {
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+ this->ptr->m_iNumRef--;
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+ if (0 == this->ptr->m_iNumRef)
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+ {
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+ JavaVM* vm;
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+ this->ptr->m_pcEnv->GetJavaVM(&vm);
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+ vm->DetachCurrentThread();
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+ }
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+ }
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+ return true;
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+}
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+// ------------------------------------------------------------------------------------------------
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+JNIThreadData* JNIEnvironment::GetThread()
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+{
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+ ai_assert(NULL != this->ptr.get());
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+ return this->ptr.get();
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+}
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+// ------------------------------------------------------------------------------------------------
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+jstring JNU_NewStringNative(JNIEnv *env, const char *str)
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+{
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+ jstring result;
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+ jbyteArray bytes = 0;
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+ int len;
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+ if (env->EnsureLocalCapacity( 2) < 0)
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+ {
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+ return NULL; /* out of memory error */
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+ }
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+ len = strlen(str);
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+ bytes = env->NewByteArray(len);
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+ if (bytes != NULL)
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+ {
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+ env->SetByteArrayRegion(bytes, 0, len,
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+ (jbyte *)str);
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+ result = (jstring)env->NewObject(JNIEnvironment::Class_java_lang_String,
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+ JNIEnvironment::MID_String_init, bytes);
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+ env->DeleteLocalRef(bytes);
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+ return result;
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+ } /* else fall through */
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+ return NULL;
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+}
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+// ------------------------------------------------------------------------------------------------
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+char *JNU_GetStringNativeChars(JNIEnv *env, jstring jstr)
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+{
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+ jbyteArray bytes = 0;
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+ jthrowable exc;
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+ char *result = 0;
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+ if (env->EnsureLocalCapacity(2) < 0)
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+ {
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+ return 0; /* out of memory error */
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+ }
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+
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+ bytes = (jbyteArray)env->CallObjectMethod(jstr,JNIEnvironment::MID_String_getBytes);
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+ exc = env->ExceptionOccurred();
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+ if (!exc)
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+ {
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+ jint len = env->GetArrayLength(bytes);
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+ result = (char *)malloc(len + 1);
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+ if (result == 0)
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+ {
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+ env->DeleteLocalRef(bytes);
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+ return 0;
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+ }
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+ env->GetByteArrayRegion(bytes, 0, len,
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+ (jbyte *)result);
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+ result[len] = 0; /* NULL-terminate */
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+ }
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+ else
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+ {
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+ env->DeleteLocalRef(exc);
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+ }
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+ env->DeleteLocalRef(bytes);
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+ return result;
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+}
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+
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+};};
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+
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+#endif // ! JNI only
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