1 /*

     2  * Copyright 1996-2003 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 /*

    27  * Unicode to ANSI string conversion macros, based on a slide from a

    28  * presentation by Asmus Freytag.  These must be macros, since the

    29  * alloca() has to be in the caller's stack space.

    30  */

    31 

    32 #ifndef AWT_UNICODE_H

    33 #define AWT_UNICODE_H

    34 

    35 #include <malloc.h>

    36 

    37 // Get a Unicode string copy of a Java String object (Java String aren't

    38 // null-terminated).

    39 extern LPWSTR J2WHelper(LPWSTR lpw, LPWSTR lpj, int nChars);

    40 extern LPWSTR J2WHelper1(LPWSTR lpw, LPWSTR lpj, int offset, int nChars);

    41 

    42 extern LPWSTR JNI_J2WHelper1(JNIEnv *env, LPWSTR lpw, jstring jstr);

    43 

    44 #define TO_WSTRING(jstr) \

    45    ((jstr == NULL) ? NULL : \

    46      (JNI_J2WHelper1(env, (LPWSTR) alloca((env->GetStringLength(jstr)+1)*2), \

    47                      jstr) \

    48     ))

    49 

    50 #endif // AWT_UNICODE_H