src/java.base/share/native/libjava/StringCoding.c

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   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include <stdlib.h>
  27 #include <jni.h>
  28 #include <jni_util.h>
  29 #include <jlong.h>
  30 #include <stdio.h>
  31 #include <jvm.h>
  32 
  33 #include "sun_misc_MessageUtils.h"
  34 
  35 static void
  36 printToFile(JNIEnv *env, jstring s, FILE *file)
  37 {
  38     char *sConverted;
  39     int length = 0;
  40     int i;
  41     const jchar *sAsArray;
  42 
  43     if (s == NULL) {
  44       s = (*env)->NewStringUTF(env, "null");
  45       if (s == NULL) return;
  46     }
  47 
  48     sAsArray = (*env)->GetStringChars(env, s, NULL);
  49     if (!sAsArray)
  50         return;
  51     length = (*env)->GetStringLength(env, s);
  52     if (length == 0) {
  53         (*env)->ReleaseStringChars(env, s, sAsArray);
  54         return;
  55     }
  56     sConverted = (char *) malloc(length + 1);
  57     if (!sConverted) {
  58         (*env)->ReleaseStringChars(env, s, sAsArray);
  59         JNU_ThrowOutOfMemoryError(env, NULL);
  60         return;
  61     }
  62 
  63     for(i = 0; i < length; i++) {
  64         sConverted[i] = (0x7f & sAsArray[i]);
  65     }
  66     sConverted[length] = '\0';
  67     jio_fprintf(file, "%s", sConverted);
  68     (*env)->ReleaseStringChars(env, s, sAsArray);
  69     free(sConverted);
  70 }
  71 
  72 JNIEXPORT void JNICALL
  73 Java_sun_misc_MessageUtils_toStderr(JNIEnv *env, jclass cls, jstring s)
  74 {
  75     printToFile(env, s, stderr);
  76 }
  77 
  78 JNIEXPORT void JNICALL
  79 Java_sun_misc_MessageUtils_toStdout(JNIEnv *env, jclass cls, jstring s)
  80 {
  81     printToFile(env, s, stdout);
  82 }


   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include <stdlib.h>
  27 #include <jni.h>
  28 #include <jni_util.h>

  29 #include <stdio.h>
  30 #include <jvm.h>
  31 
  32 #include "java_lang_StringCoding.h"
  33 
  34 static void
  35 printToFile(JNIEnv *env, jstring s, FILE *file)
  36 {
  37     char *sConverted;
  38     int length = 0;
  39     int i;
  40     const jchar *sAsArray;
  41 
  42     if (s == NULL) {
  43         JNU_ThrowNullPointerException(env, NULL);
  44         return;
  45     }
  46 
  47     sAsArray = (*env)->GetStringChars(env, s, NULL);
  48     if (!sAsArray)
  49         return;
  50     length = (*env)->GetStringLength(env, s);
  51     if (length == 0) {
  52         (*env)->ReleaseStringChars(env, s, sAsArray);
  53         return;
  54     }
  55     sConverted = (char *) malloc(length + 1);
  56     if (!sConverted) {
  57         (*env)->ReleaseStringChars(env, s, sAsArray);
  58         JNU_ThrowOutOfMemoryError(env, NULL);
  59         return;
  60     }
  61 
  62     for(i = 0; i < length; i++) {
  63         sConverted[i] = (0x7f & sAsArray[i]);
  64     }
  65     sConverted[length] = '\0';
  66     jio_fprintf(file, "%s", sConverted);
  67     (*env)->ReleaseStringChars(env, s, sAsArray);
  68     free(sConverted);
  69 }
  70 
  71 JNIEXPORT void JNICALL
  72 Java_java_lang_StringCoding_err(JNIEnv *env, jclass cls, jstring s)
  73 {
  74     printToFile(env, s, stderr);
  75 }