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/* //device/libs/android_runtime/android_os_SystemProperties.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "cutils/properties.h"
#include "jni.h"
#include "android_runtime/AndroidRuntime.h"
#include <nativehelper/JNIHelp.h>
namespace android
{
static jstring SystemProperties_getSS(JNIEnv *env, jobject clazz,
jstring keyJ, jstring defJ)
{
int len;
const char* key;
char buf[PROPERTY_VALUE_MAX];
jstring rvJ = NULL;
if (keyJ == NULL) {
jniThrowException(env, "java/lang/NullPointerException",
"key must not be null.");
goto error;
}
key = env->GetStringUTFChars(keyJ, NULL);
len = property_get(key, buf, "");
if ((len <= 0) && (defJ != NULL)) {
rvJ = defJ;
} else if (len >= 0) {
rvJ = env->NewStringUTF(buf);
} else {
rvJ = env->NewStringUTF("");
}
env->ReleaseStringUTFChars(keyJ, key);
error:
return rvJ;
}
static jstring SystemProperties_getS(JNIEnv *env, jobject clazz,
jstring keyJ)
{
return SystemProperties_getSS(env, clazz, keyJ, NULL);
}
static jint SystemProperties_get_int(JNIEnv *env, jobject clazz,
jstring keyJ, jint defJ)
{
int len;
const char* key;
char buf[PROPERTY_VALUE_MAX];
jint result = defJ;
if (keyJ == NULL) {
jniThrowException(env, "java/lang/NullPointerException",
"key must not be null.");
goto error;
}
key = env->GetStringUTFChars(keyJ, NULL);
len = property_get(key, buf, "");
if (len > 0) {
jint temp;
if (sscanf(buf, "%d", &temp) == 1)
result = temp;
}
env->ReleaseStringUTFChars(keyJ, key);
error:
return result;
}
static jlong SystemProperties_get_long(JNIEnv *env, jobject clazz,
jstring keyJ, jlong defJ)
{
int len;
const char* key;
char buf[PROPERTY_VALUE_MAX];
jlong result = defJ;
if (keyJ == NULL) {
jniThrowException(env, "java/lang/NullPointerException",
"key must not be null.");
goto error;
}
key = env->GetStringUTFChars(keyJ, NULL);
len = property_get(key, buf, "");
if (len > 0) {
jlong temp;
if (sscanf(buf, "%lld", &temp) == 1)
result = temp;
}
env->ReleaseStringUTFChars(keyJ, key);
error:
return result;
}
static jboolean SystemProperties_get_boolean(JNIEnv *env, jobject clazz,
jstring keyJ, jboolean defJ)
{
int len;
const char* key;
char buf[PROPERTY_VALUE_MAX];
jboolean result = defJ;
if (keyJ == NULL) {
jniThrowException(env, "java/lang/NullPointerException",
"key must not be null.");
goto error;
}
key = env->GetStringUTFChars(keyJ, NULL);
len = property_get(key, buf, "");
if (len == 1) {
char ch = buf[0];
if (ch == '0' || ch == 'n')
result = false;
else if (ch == '1' || ch == 'y')
result = true;
} else if (len > 1) {
if (!strcmp(buf, "no") || !strcmp(buf, "false") || !strcmp(buf, "off")) {
result = false;
} else if (!strcmp(buf, "yes") || !strcmp(buf, "true") || !strcmp(buf, "on")) {
result = true;
}
}
env->ReleaseStringUTFChars(keyJ, key);
error:
return result;
}
static void SystemProperties_set(JNIEnv *env, jobject clazz,
jstring keyJ, jstring valJ)
{
int err;
const char* key;
const char* val;
if (keyJ == NULL) {
jniThrowException(env, "java/lang/NullPointerException",
"key must not be null.");
return ;
}
key = env->GetStringUTFChars(keyJ, NULL);
if (valJ == NULL) {
val = ""; /* NULL pointer not allowed here */
} else {
val = env->GetStringUTFChars(valJ, NULL);
}
err = property_set(key, val);
env->ReleaseStringUTFChars(keyJ, key);
if (valJ != NULL) {
env->ReleaseStringUTFChars(valJ, val);
}
}
static JNINativeMethod method_table[] = {
{ "native_get", "(Ljava/lang/String;)Ljava/lang/String;",
(void*) SystemProperties_getS },
{ "native_get", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
(void*) SystemProperties_getSS },
{ "native_get_int", "(Ljava/lang/String;I)I",
(void*) SystemProperties_get_int },
{ "native_get_long", "(Ljava/lang/String;J)J",
(void*) SystemProperties_get_long },
{ "native_get_boolean", "(Ljava/lang/String;Z)Z",
(void*) SystemProperties_get_boolean },
{ "native_set", "(Ljava/lang/String;Ljava/lang/String;)V",
(void*) SystemProperties_set },
};
int register_android_os_SystemProperties(JNIEnv *env)
{
return AndroidRuntime::registerNativeMethods(
env, "android/os/SystemProperties",
method_table, NELEM(method_table));
}
};
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