1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. 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.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 #include <stdlib.h>

    25 #include <string.h>

    26 

    27 #include "jni.h"

    28 #include "jni_util.h"

    29 

    30 JNIEXPORT jbyteArray JNICALL

    31 Java_StringPlatformChars_getBytes(JNIEnv *env, jclass unused, jstring value)

    32 {

    33     const char* str;

    34     int len;

    35     jbyteArray bytes = NULL;

    36 

    37     str = JNU_GetStringPlatformChars(env, value, NULL);

    38     if (str == NULL) {

    39         return NULL;

    40     }

    41     len = (int)strlen(str);

    42     bytes = (*env)->NewByteArray(env, len);

    43     if (bytes != 0) {

    44         jclass strClazz = JNU_ClassString(env);

    45         if (strClazz == NULL) {

    46             return NULL;

    47         }

    48         (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte *)str);

    49 

    50         return bytes;

    51     }

    52     return NULL;

    53 }

    54 

    55 JNIEXPORT jstring JNICALL

    56 Java_StringPlatformChars_newString(JNIEnv *env, jclass unused, jbyteArray bytes)

    57 {

    58     char* str;

    59     int len = (*env)->GetArrayLength(env, bytes);

    60     int i;

    61     jbyte* jbytes;

    62 

    63     str = (char*)malloc(len + 1);

    64     jbytes = (*env)->GetPrimitiveArrayCritical(env, bytes, NULL);

    65     if (jbytes == NULL) {

    66         return NULL;

    67     }

    68     for (i = 0; i < len; i++) {

    69         str[i] = (char)jbytes[i];

    70     }

    71     str[len] = '\0';

    72     (*env)->ReleasePrimitiveArrayCritical(env, bytes, (void*)jbytes, 0);

    73 

    74     return JNU_NewStringPlatform(env, str);

    75 }

    76