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Update of /cvsroot/jpeergen/dev/src/cpp
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv7438

Added Files:
	JniUtils.cpp JniUtils.h stdhdrs.h 
Log Message:
Going ahead and adding these to CVS until I can figure out a better way
to deal with this as part of generation.


--- NEW FILE: JniUtils.cpp ---
/*
 * The Progeeks.org BSD license.
 *
 * Copyright (c) 2004, Paul Speed
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1) Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2) Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3) Neither the names "Progeeks", "JPeerGen", nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#include <iostream>
#include <vector>
#include "JniUtils.h"


// Used for attaching new threads to the JVM
// instance
static JavaVM *cached_vm;


std::string JniUtils::getString(JNIEnv *env, jstring s)
{
    if(s == NULL)
        return std::string("");
    jboolean isCopy;
    const char* charValue = env->GetStringUTFChars(s, &isCopy);
    if(charValue == NULL)
        return std::string("");
    std::string strId = std::string(charValue);
    env->ReleaseStringUTFChars(s, charValue);

    return strId;
}

char* JniUtils::getCharPtr(JNIEnv *env, jstring s)
{
    jboolean isCopy;
    const char* charValue = env->GetStringUTFChars(s, &isCopy);
    if(charValue == NULL)
        return NULL;
    char* str = new char[strlen(charValue) + 1];
    strcpy(str, charValue);
    env->ReleaseStringUTFChars(s, charValue);

    return str;
}

jstring JniUtils::getJString(JNIEnv *env, std::wstring s)
{
    std::vector<jchar> v(s.begin(), s.end());
    return env->NewString(&v[0], v.size());
}


jstring JniUtils::getJString(JNIEnv *env, std::string s)
{
    return env->NewStringUTF(s.c_str());
}

/**
 *  Returns a c++ string given a jstring.  A standard JNIEnv
 *  will be retrieved for the current thread to perform
 *  this processing.
 */
std::string JniUtils::getString(jstring s)
{
    return( getString(attachThread(), s) );
}

/**
 *  Returns the main JVM instance.
 */
JavaVM *JniUtils::getJVM()
{
    return( cached_vm );
}


/**
 *  Utility method for retrieving the current thread's JNIEnv
 *  and attaching the thread if it doesn't already have a JNIEnv.
 */
JNIEnv *JniUtils::attachThread()
{
    JNIEnv *env;
    getJVM()->AttachCurrentThread( (void **)&env, NULL );

    return( env );
}

extern "C" {
JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved)
{
    printf( "native:JNI_OnLoad()\n" );

    cached_vm = vm;
    JNIEnv *env;

    if( vm->GetEnv( (void **)&env, JNI_VERSION_1_2 ) )
        {
        return JNI_ERR;
        }

    return( JNI_VERSION_1_2 );
}

JNIEXPORT void JNICALL JNI_OnUnload(JavaVM* vm, void* reserved)
{
    printf( "native:JNI_OnUnload()\n" );
}

} // extern "C"


--- NEW FILE: JniUtils.h ---
/*
 * The Progeeks.org BSD license.
 *
 * Copyright (c) 2004, Paul Speed
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1) Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2) Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3) Neither the names "Progeeks", "JPeerGen", nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef JniUtilsHdr
#define JniUtilsHdr

#include <jni.h>
#include <string>
#include "stdhdrs.h"

class DllExport JniUtils
{
public:
    /**
     *  Returns the main JVM instance.
     */
    static JavaVM *getJVM();

    /**
     *  Returns the JNI environment for the current
     *  thread, creating one if the current thread isn't
     *  yet attached.
     */
    static JNIEnv *attachThread();

    /*
     * Returns a c++ string given a jstring and jni environment.
     */
    static std::string getString(JNIEnv *env, jstring s);
    static char* getCharPtr(JNIEnv *env, jstring s);
    static jstring getJString(JNIEnv *env, std::string s);
    static jstring getJString(JNIEnv *env, std::wstring s);


    /**
     *  Returns a c++ string given a jstring.  A standard JNIEnv
     *  will be retrieved for the current thread to perform
     *  this processing.
     */
    static std::string getString(jstring s);

private:
    JniUtils();
    ~JniUtils();
};
#endif

--- NEW FILE: stdhdrs.h ---
#ifndef stdhdrsHdr
#define stdhdrsHdr

#if defined(__WIN32__) || defined(WIN32)

#define DllExport   __declspec( dllexport )

//
// Suppress STL name truncation warning
//

#pragma warning( disable : 4786 )

#define trunc(arg)  ((double)(int)(arg))

typedef unsigned _int64 u_int64_t;
typedef unsigned long int u_int32_t;
typedef unsigned short int u_int16_t;
typedef unsigned char u_int8_t;
typedef _int64 int64_t;
typedef long int int32_t;
typedef short int int16_t;

#else

#define DllExport

#endif // OS defs

#endif // stdhdrsHdr

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