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<a href="gzipstring_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 2010-2021 Google LLC</span></div><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><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><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><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div><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><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><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><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><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><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><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#ifndef OR_TOOLS_BASE_GZIPSTRING_H_</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#define OR_TOOLS_BASE_GZIPSTRING_H_</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "zlib.h"</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="gzipstring_8h.html#a3834e8b931bd4ecc1a566f2fdf3cb899"> 22</a></span> <span class="keywordtype">bool</span> <a class="code" href="gzipstring_8h.html#a3834e8b931bd4ecc1a566f2fdf3cb899">GunzipString</a>(<span class="keyword">const</span> std::string& str, std::string* out) {</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  z_stream zs;</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  zs.zalloc = Z_NULL;</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  zs.zfree = Z_NULL;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  zs.opaque = Z_NULL;</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  zs.next_in = Z_NULL;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  zs.avail_in = 0;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  zs.next_out = Z_NULL;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">if</span> (inflateInit2(&zs, <span class="comment">/*window_bits=*/</span>15 + 32) != Z_OK) {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  }</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  zs.next_in = (Bytef*)str.data();</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  zs.avail_in = str.size();</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">int</span> status;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">char</span> buffer[32768];</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// Decompress string by block.</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">do</span> {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  zs.next_out = reinterpret_cast<Bytef*>(buffer);</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  zs.avail_out = <span class="keyword">sizeof</span>(buffer);</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  status = inflate(&zs, 0);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span> (out->size() < zs.total_out) {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  out->append(buffer, zs.total_out - out->size());</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  } <span class="keywordflow">while</span> (status == Z_OK);</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  inflateEnd(&zs);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (status != Z_STREAM_END) { <span class="comment">// an error occurred that was not EOF</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Exception during zlib decompression: ("</span> << status << <span class="stringliteral">") "</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  << zs.msg;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="gzipstring_8h.html#a261a22a33098cddfef82560d4a9e47a6"> 63</a></span> <span class="keywordtype">void</span> <a class="code" href="gzipstring_8h.html#a261a22a33098cddfef82560d4a9e47a6">GzipString</a>(absl::string_view uncompressed, std::string* <a class="code" href="constraint__solver_8cc.html#ad3abed281c933b061bc42a26033aa7b6">compressed</a>) {</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  z_stream zs;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  zs.zalloc = Z_NULL;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  zs.zfree = Z_NULL;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  zs.opaque = Z_NULL;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  zs.next_in = Z_NULL;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  zs.avail_in = 0;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  zs.next_out = Z_NULL;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (deflateInit(&zs, Z_BEST_COMPRESSION) != Z_OK) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Cannot initialize zlib compression."</span>;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  zs.next_in = (Bytef*)uncompressed.data();</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  zs.avail_in = uncompressed.size(); <span class="comment">// set the z_stream's input</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordtype">int</span> status;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">char</span> buffer[32768];</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// compress block by block.</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">do</span> {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  zs.next_out = reinterpret_cast<Bytef*>(buffer);</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  zs.avail_out = <span class="keyword">sizeof</span>(buffer);</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  status = deflate(&zs, Z_FINISH);</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">if</span> (<a class="code" href="constraint__solver_8cc.html#ad3abed281c933b061bc42a26033aa7b6">compressed</a>->size() < zs.total_out) {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="constraint__solver_8cc.html#ad3abed281c933b061bc42a26033aa7b6">compressed</a>->append(buffer, zs.total_out - <a class="code" href="constraint__solver_8cc.html#ad3abed281c933b061bc42a26033aa7b6">compressed</a>->size());</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  }</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  } <span class="keywordflow">while</span> (status == Z_OK);</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  deflateEnd(&zs);</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span> (status != Z_STREAM_END) { <span class="comment">// an error occurred that was not EOF</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Exception during zlib compression: ("</span> << status << <span class="stringliteral">") "</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  << zs.msg;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> }</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor">#endif // OR_TOOLS_BASE_GZIPSTRING_H_</span></div><div class="ttc" id="base_2logging_8h_html_afcaa7cadd41741bb855c2ada1d2ef927"><div class="ttname"><a href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a></div><div class="ttdeci">#define VLOG(verboselevel)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00979">base/logging.h:979</a></div></div>
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<div class="ttc" id="gzipstring_8h_html_a3834e8b931bd4ecc1a566f2fdf3cb899"><div class="ttname"><a href="gzipstring_8h.html#a3834e8b931bd4ecc1a566f2fdf3cb899">GunzipString</a></div><div class="ttdeci">bool GunzipString(const std::string &str, std::string *out)</div><div class="ttdef"><b>Definition:</b> <a href="gzipstring_8h_source.html#l00022">gzipstring.h:22</a></div></div>
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<div class="ttc" id="gzipstring_8h_html_a261a22a33098cddfef82560d4a9e47a6"><div class="ttname"><a href="gzipstring_8h.html#a261a22a33098cddfef82560d4a9e47a6">GzipString</a></div><div class="ttdeci">void GzipString(absl::string_view uncompressed, std::string *compressed)</div><div class="ttdef"><b>Definition:</b> <a href="gzipstring_8h_source.html#l00063">gzipstring.h:63</a></div></div>
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<div class="ttc" id="constraint__solver_8cc_html_ad3abed281c933b061bc42a26033aa7b6"><div class="ttname"><a href="constraint__solver_8cc.html#ad3abed281c933b061bc42a26033aa7b6">compressed</a></div><div class="ttdeci">std::string compressed</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8cc_source.html#l00676">constraint_solver.cc:676</a></div></div>
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