/usr/include/android/nativehelper/ScopedStringChars.h is in android-libnativehelper-dev 6.0.1+r16-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | /*
* Copyright (C) 2011 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.
*/
#ifndef SCOPED_STRING_CHARS_H_included
#define SCOPED_STRING_CHARS_H_included
#include "JNIHelp.h"
// A smart pointer that provides access to a jchar* given a JNI jstring.
// Unlike GetStringChars, we throw NullPointerException rather than abort if
// passed a null jstring, and get will return NULL.
// This makes the correct idiom very simple:
//
// ScopedStringChars name(env, java_name);
// if (name.get() == NULL) {
// return NULL;
// }
class ScopedStringChars {
public:
ScopedStringChars(JNIEnv* env, jstring s) : env_(env), string_(s), size_(0) {
if (s == NULL) {
chars_ = NULL;
jniThrowNullPointerException(env, NULL);
} else {
chars_ = env->GetStringChars(string_, NULL);
if (chars_ != NULL) {
size_ = env->GetStringLength(string_);
}
}
}
~ScopedStringChars() {
if (chars_ != NULL) {
env_->ReleaseStringChars(string_, chars_);
}
}
const jchar* get() const {
return chars_;
}
size_t size() const {
return size_;
}
const jchar& operator[](size_t n) const {
return chars_[n];
}
private:
JNIEnv* const env_;
const jstring string_;
const jchar* chars_;
size_t size_;
DISALLOW_COPY_AND_ASSIGN(ScopedStringChars);
};
#endif // SCOPED_STRING_CHARS_H_included
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