181 lines
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181 lines
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<div class="title">jniutil.h</div> </div>
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<a href="jniutil_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2010-2018 Google LLC</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#ifndef OR_TOOLS_BASE_JNIUTIL_H_</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#define OR_TOOLS_BASE_JNIUTIL_H_</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <jni.h></span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <string></span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  </div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="class_j_n_i_util.html"> 23</a></span> <span class="keyword">class </span><a class="code" href="class_j_n_i_util.html">JNIUtil</a> {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="comment">// Creates a Java jstring from a null-terminated UTF-8 encoded C String.</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="comment">// The caller must delete the jstring reference.</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="class_j_n_i_util.html#afe22e1d61c504c8826aaa1dc2a58218b"> 27</a></span>  <span class="keyword">static</span> jstring <a class="code" href="class_j_n_i_util.html#afe22e1d61c504c8826aaa1dc2a58218b">MakeJString</a>(JNIEnv* env, <span class="keyword">const</span> <span class="keywordtype">char</span>* cstr) {</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">if</span> (cstr == NULL) <span class="keywordflow">return</span> NULL;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordflow">return</span> env->NewStringUTF(cstr);</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  }</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">// Creates a null-terminated UTF-8 encoded C string from a jstring.</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">// The returned string should be "delete[]"-ed when no longer needed.</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="class_j_n_i_util.html#a3387a526bd53b5a94510ccdc035a7710"> 34</a></span>  <span class="keyword">static</span> <span class="keywordtype">char</span>* <a class="code" href="class_j_n_i_util.html#a3387a526bd53b5a94510ccdc035a7710">MakeCString</a>(JNIEnv* env, jstring str) {</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordflow">if</span> (str == NULL) <span class="keywordflow">return</span> NULL;</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  jsize length = env->GetStringUTFLength(str);</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* src = env->GetStringUTFChars(str, NULL);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">char</span>* dst = <span class="keyword">new</span> <span class="keywordtype">char</span>[length + 1];</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  memcpy(dst, src, length);</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  dst[length] = <span class="charliteral">'\0'</span>;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  env->ReleaseStringUTFChars(str, src);</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> dst;</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">// Creates a new char array from a jbyteArray.</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// The caller must delete[] the returned array.</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="class_j_n_i_util.html#a6f5db428a454e2baf7edc4e6efad313b"> 47</a></span>  <span class="keyword">static</span> <span class="keywordtype">char</span>* <a class="code" href="class_j_n_i_util.html#a6f5db428a454e2baf7edc4e6efad313b">MakeCharArray</a>(JNIEnv* env, jbyteArray <a class="code" href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a>, <span class="keywordtype">int</span>* size) {</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  jsize n = env->GetArrayLength(<a class="code" href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a>);</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  *size = n;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  jbyte* jba = <span class="keyword">new</span> jbyte[n];</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  env->GetByteArrayRegion(<a class="code" href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a>, 0, n, jba);</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// We make use of the fact that jbyte's are really just chars.</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// If this changes (different VM, etc.) things will break.</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(jba);</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// Produces a jbyteArray from a char array.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="class_j_n_i_util.html#a2224bd53075f9bdb75729359d470e6f9"> 59</a></span>  <span class="keyword">static</span> jbyteArray <a class="code" href="class_j_n_i_util.html#a2224bd53075f9bdb75729359d470e6f9">MakeJByteArray</a>(JNIEnv* env, <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a>, <span class="keywordtype">int</span> size) {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">// Create empty array object</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  jbyteArray output = env->NewByteArray(size);</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// Fill it</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  env->SetByteArrayRegion(output, 0, size, <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>jbyte*<span class="keyword">></span>(<a class="code" href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a>));</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> output;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> };</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_BASE_JNIUTIL_H_</span></div>
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<div class="ttc" id="abase_2logging_8h_html"><div class="ttname"><a href="base_2logging_8h.html">logging.h</a></div></div>
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<div class="ttc" id="aclass_j_n_i_util_html"><div class="ttname"><a href="class_j_n_i_util.html">JNIUtil</a></div><div class="ttdef"><b>Definition:</b> <a href="jniutil_8h_source.html#l00023">jniutil.h:23</a></div></div>
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<div class="ttc" id="aclass_j_n_i_util_html_a2224bd53075f9bdb75729359d470e6f9"><div class="ttname"><a href="class_j_n_i_util.html#a2224bd53075f9bdb75729359d470e6f9">JNIUtil::MakeJByteArray</a></div><div class="ttdeci">static jbyteArray MakeJByteArray(JNIEnv *env, const char *a, int size)</div><div class="ttdef"><b>Definition:</b> <a href="jniutil_8h_source.html#l00059">jniutil.h:59</a></div></div>
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<div class="ttc" id="aclass_j_n_i_util_html_a3387a526bd53b5a94510ccdc035a7710"><div class="ttname"><a href="class_j_n_i_util.html#a3387a526bd53b5a94510ccdc035a7710">JNIUtil::MakeCString</a></div><div class="ttdeci">static char * MakeCString(JNIEnv *env, jstring str)</div><div class="ttdef"><b>Definition:</b> <a href="jniutil_8h_source.html#l00034">jniutil.h:34</a></div></div>
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<div class="ttc" id="aclass_j_n_i_util_html_a6f5db428a454e2baf7edc4e6efad313b"><div class="ttname"><a href="class_j_n_i_util.html#a6f5db428a454e2baf7edc4e6efad313b">JNIUtil::MakeCharArray</a></div><div class="ttdeci">static char * MakeCharArray(JNIEnv *env, jbyteArray a, int *size)</div><div class="ttdef"><b>Definition:</b> <a href="jniutil_8h_source.html#l00047">jniutil.h:47</a></div></div>
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<div class="ttc" id="aclass_j_n_i_util_html_afe22e1d61c504c8826aaa1dc2a58218b"><div class="ttname"><a href="class_j_n_i_util.html#afe22e1d61c504c8826aaa1dc2a58218b">JNIUtil::MakeJString</a></div><div class="ttdeci">static jstring MakeJString(JNIEnv *env, const char *cstr)</div><div class="ttdef"><b>Definition:</b> <a href="jniutil_8h_source.html#l00027">jniutil.h:27</a></div></div>
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<div class="ttc" id="aconstraint__solver_2table_8cc_html_af730895c6c6ef6e03caaf6251192dfd2"><div class="ttname"><a href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a></div><div class="ttdeci">int64 a</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_2table_8cc_source.html#l00042">constraint_solver/table.cc:42</a></div></div>
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