8bb54b04ef
FYI: find ortools \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i 's/\(Copyright 2010\)-2018/\1-2021/g'
69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
// Copyright 2010-2021 Google LLC
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef OR_TOOLS_BASE_JNIUTIL_H_
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#define OR_TOOLS_BASE_JNIUTIL_H_
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#include <jni.h>
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#include <string>
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#include "ortools/base/logging.h"
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class JNIUtil {
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public:
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// Creates a Java jstring from a null-terminated UTF-8 encoded C String.
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// The caller must delete the jstring reference.
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static jstring MakeJString(JNIEnv* env, const char* cstr) {
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if (cstr == NULL) return NULL;
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return env->NewStringUTF(cstr);
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}
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// Creates a null-terminated UTF-8 encoded C string from a jstring.
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// The returned string should be "delete[]"-ed when no longer needed.
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static char* MakeCString(JNIEnv* env, jstring str) {
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if (str == NULL) return NULL;
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jsize length = env->GetStringUTFLength(str);
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const char* src = env->GetStringUTFChars(str, NULL);
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char* dst = new char[length + 1];
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memcpy(dst, src, length);
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dst[length] = '\0';
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env->ReleaseStringUTFChars(str, src);
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return dst;
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}
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// Creates a new char array from a jbyteArray.
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// The caller must delete[] the returned array.
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static char* MakeCharArray(JNIEnv* env, jbyteArray a, int* size) {
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jsize n = env->GetArrayLength(a);
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*size = n;
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jbyte* jba = new jbyte[n];
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env->GetByteArrayRegion(a, 0, n, jba);
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// We make use of the fact that jbyte's are really just chars.
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// If this changes (different VM, etc.) things will break.
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return reinterpret_cast<char*>(jba);
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}
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// Produces a jbyteArray from a char array.
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static jbyteArray MakeJByteArray(JNIEnv* env, const char* a, int size) {
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// Create empty array object
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jbyteArray output = env->NewByteArray(size);
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// Fill it
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env->SetByteArrayRegion(output, 0, size, reinterpret_cast<const jbyte*>(a));
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return output;
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}
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};
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#endif // OR_TOOLS_BASE_JNIUTIL_H_
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