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< h2 > C++ Reference< / h2 >
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< li > < a href = "../cpp_algorithms/annotated.html" > Algorithms< / a > < / li >
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< li > < a href = "../cpp_sat/annotated.html" > CP-SAT< / a > < / li >
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< li > < a href = "../cpp_graph/annotated.html" > Graph< / a > < / li >
< li > < a href = "../cpp_routing/annotated.html" > Routing< / a > < / li >
< li > < a href = "../cpp_linear/annotated.html" > Linear solver< / a > < / li >
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< h1 style = "color: #145A32;" > C++ Reference: Graph< / h1 >
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< a href = "io_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 >
< 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 = "comment" > // A collections of i/o utilities for the Graph classes in ./graph.h.< / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #ifndef UTIL_GRAPH_IO_H_< / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #define UTIL_GRAPH_IO_H_< / 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 < algorithm> < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "preprocessor" > #include < memory> < / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "preprocessor" > #include < numeric> < / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "preprocessor" > #include < string> < / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "preprocessor" > #include < vector> < / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "preprocessor" > #include " absl/strings/numbers.h" < / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "preprocessor" > #include " absl/strings/str_cat.h" < / span > < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "preprocessor" > #include " absl/strings/str_format.h" < / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "preprocessor" > #include " absl/strings/str_join.h" < / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "preprocessor" > #include " absl/strings/str_split.h" < / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "preprocessor" > #include " ortools/base/filelineiter.h" < / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "preprocessor" > #include " ortools/base/status.h" < / span > < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "preprocessor" > #include " ortools/base/statusor.h" < / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "graph_8h.html" > ortools/graph/graph.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keyword" > namespace < / span > < a class = "code" href = "namespaceutil.html" > util< / a > {< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < / div >
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< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "comment" > // Returns a string representation of a graph.< / span > < / div >
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< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9" > 38< / a > < / span >   < span class = "keyword" > enum< / span > < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9" > GraphToStringFormat< / a > {< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "comment" > // One arc per line, eg. " 3-> 1" .< / span > < / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0" > 40< / a > < / span >   < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0" > PRINT_GRAPH_ARCS< / a > ,< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "comment" > // One space-separated adjacency list per line, eg. " 3: 5 1 3 1" .< / span > < / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "comment" > // Nodes with no outgoing arc get an empty list.< / span > < / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1" > 44< / a > < / span >   < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1" > PRINT_GRAPH_ADJACENCY_LISTS< / a > ,< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "comment" > // Ditto, but the adjacency lists are sorted.< / span > < / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d" > 47< / a > < / span >   < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d" > PRINT_GRAPH_ADJACENCY_LISTS_SORTED< / a > ,< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   };< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > Graph> < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   std::string < a class = "code" href = "namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963" > GraphToString< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > & graph, < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9" > GraphToStringFormat< / a > format);< / 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 >   < span class = "comment" > // Read a graph file in the simple " .g" format: the file should be a text file< / span > < / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "comment" > // containing only space-separated integers, whose first line is:< / span > < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "comment" > // < num nodes> < num edges> [< num_colors> < index of first node with color #1> < / span > < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "comment" > // < index of first node with color #2> ...]< / span > < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "comment" > // and whose subsequent lines represent edges if " directed" is false, or arcs if< / span > < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "comment" > // " directed" is true:< / span > < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > // < node1> < node2> .< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "comment" > // This returns a newly created graph upon success, which the user needs to take< / span > < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "comment" > // ownership of, or a failure status. See ortools/base/statusor.h.< / span > < / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "comment" > // If " num_nodes_with_color_or_null" is not nullptr, it will be filled with the< / span > < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "comment" > // color information: num_nodes_with_color_or_null[i] will be the number of< / span > < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "comment" > // nodes with color #i. Furthermore, nodes are sorted by color.< / span > < / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "comment" > // Examples:< / span > < / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "comment" > // // Simply crash if the graph isn' t successfully read from the file.< / span > < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < span class = "comment" > // typedef StaticGraph< > MyGraph; // This is just an example.< / span > < / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "comment" > // std::unique_ptr< MyGraph> my_graph(< / span > < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "comment" > // ReadGraphFile< MyGraph> (" graph.g" , /*directed=*/ false).ValueOrDie());< / span > < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "comment" > // // More complicated error handling.< / span > < / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "comment" > // util::StatusOr< MyGraph*> error_or_graph =< / span > < / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "comment" > // ReadGraphFile< MyGraph> (" graph.g" , /*directed=*/ false);< / span > < / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < span class = "comment" > // if (!error_or_graph.ok()) {< / span > < / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < span class = "comment" > // LOG(ERROR) < < " Error: " < < error_or_graph.status().error_message();< / span > < / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < span class = "comment" > // } else {< / span > < / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < span class = "comment" > // std::unique_ptr< MyGraph> my_graph(error_or_graph.ValueOrDie());< / span > < / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "comment" > // ...< / span > < / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "comment" > // }< / span > < / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > Graph> < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   util::StatusOr< Graph*> < a class = "code" href = "namespaceutil.html#a33f4d0b03061ce4bcb6b7b28b3725053" > ReadGraphFile< / a > (< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "keyword" > const< / span > std::string& filename, < span class = "keywordtype" > bool< / span > directed,< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   std::vector< int> * num_nodes_with_color_or_null);< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "comment" > // Writes a graph to the " .g" file format described above. If " directed" is< / span > < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "comment" > // true, all arcs are written to the file. If it is false, the graph is expected< / span > < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "comment" > // to be undirected (i.e. the number of arcs a-> b is equal to the number of arcs< / span > < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "comment" > // b-> a for all nodes a,b); and only the arcs a-> b where a< =b are written. Note< / span > < / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "comment" > // however that in this case, the symmetry of the graph is not fully checked< / span > < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "comment" > // (only the parity of the number of non-self arcs is).< / span > < / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "comment" > // " num_nodes_with_color" is optional. If it is not empty, then the color< / span > < / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "comment" > // information will be written to the header of the .g file. See ReadGraphFile.< / span > < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "comment" > // This method is the reverse of ReadGraphFile (with the same value for< / span > < / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "comment" > // " directed" ).< / span > < / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > Graph> < / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   util::Status < a class = "code" href = "namespaceutil.html#a865d24e5d4cab584316eabc40aa50714" > WriteGraphToFile< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > & graph, < span class = "keyword" > const< / span > std::string& filename,< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < span class = "keywordtype" > bool< / span > directed,< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "keyword" > const< / span > std::vector< int> & num_nodes_with_color);< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "comment" > // Implementations of the templated methods.< / span > < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > Graph> < / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963" > 107< / a > < / span >   std::string < a class = "code" href = "namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963" > GraphToString< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "classutil_1_1ListGraph.html" > Graph< / a > & graph, < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9" > GraphToStringFormat< / a > format) {< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   std::string out;< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   std::vector< typename Graph::NodeIndex> adj;< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#aec05ff3d270a5f888e1623c2a99ff2aa" > Graph::NodeIndex< / a > node : graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a8a40f2c75615a26ba71e94dd7d42f481" > AllNodes< / a > ()) {< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "keywordflow" > if< / span > (format == < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0" > PRINT_GRAPH_ARCS< / a > ) {< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#a92531459eff09455cfa63976f5024906" > Graph::ArcIndex< / a > arc : graph.< a class = "code" href = "classutil_1_1ListGraph.html#ad7db584fc1fe14ce9296131fda625994" > OutgoingArcs< / a > (node)) {< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keywordflow" > if< / span > (!out.empty()) out += < span class = "charliteral" > ' \n' < / span > ;< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   absl::StrAppend(& out, node, < span class = "stringliteral" > " -> " < / span > , graph.< a class = "code" href = "classutil_1_1ListGraph.html#aceb0938bcb2e8e5f37986d4cf8e3a955" > Head< / a > (arc));< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   }< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   } < span class = "keywordflow" > else< / span > { < span class = "comment" > // PRINT_GRAPH_ADJACENCY_LISTS[_SORTED]< / span > < / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   adj.clear();< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#a92531459eff09455cfa63976f5024906" > Graph::ArcIndex< / a > arc : graph.< a class = "code" href = "classutil_1_1ListGraph.html#ad7db584fc1fe14ce9296131fda625994" > OutgoingArcs< / a > (node)) {< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   adj.push_back(graph.< a class = "code" href = "classutil_1_1ListGraph.html#aceb0938bcb2e8e5f37986d4cf8e3a955" > Head< / a > (arc));< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   }< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > if< / span > (format == < a class = "code" href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d" > PRINT_GRAPH_ADJACENCY_LISTS_SORTED< / a > ) {< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   std::sort(adj.begin(), adj.end());< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   }< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > if< / span > (node != 0) out += < span class = "charliteral" > ' \n' < / span > ;< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   absl::StrAppend(& out, node, < span class = "stringliteral" > " : " < / span > , absl::StrJoin(adj, < span class = "stringliteral" > " " < / span > ));< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   }< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   }< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "keywordflow" > return< / span > out;< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   }< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > Graph> < / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceutil.html#a33f4d0b03061ce4bcb6b7b28b3725053" > 132< / a > < / span >   util::StatusOr< Graph*> < a class = "code" href = "namespaceutil.html#a33f4d0b03061ce4bcb6b7b28b3725053" > ReadGraphFile< / a > (< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keyword" > const< / span > std::string& filename, < span class = "keywordtype" > bool< / span > directed,< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   std::vector< int> * num_nodes_with_color_or_null) {< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   std::unique_ptr< Graph> graph;< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   int64 num_nodes = -1;< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   int64 num_expected_lines = -1;< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   int64 num_lines_read = 0;< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > std::string& line : FileLines(filename)) {< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   ++num_lines_read;< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keywordflow" > if< / span > (num_lines_read == 1) {< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   std::vector< int64> header_ints;< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "comment" > // if (!SplitStringAndParse(line, " " , & absl::SimpleAtoi,< / span > < / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "comment" > // & header_ints) ||< / span > < / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "comment" > // header_ints.size() < 2 || header_ints[0] < 0 || header_ints[1] < 0) {< / span > < / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < span class = "comment" > // return util::Status(< / span > < / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < span class = "comment" > // util::error::INVALID_ARGUMENT,< / span > < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "comment" > // absl::StrCat(" First line of ' " , filename,< / span > < / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   < span class = "comment" > // " ' should be at least two nonnegative integers." ));< / span > < / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < span class = "comment" > // }< / span > < / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   num_nodes = header_ints[0];< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   num_expected_lines = header_ints[1];< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "keywordflow" > if< / span > (num_nodes_with_color_or_null != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   num_nodes_with_color_or_null-> clear();< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keywordflow" > if< / span > (header_ints.size() == 2) {< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "comment" > // No coloring: all the nodes have the same color.< / span > < / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   num_nodes_with_color_or_null-> push_back(num_nodes);< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > num_colors = header_ints[2];< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keywordflow" > if< / span > (header_ints.size() != num_colors + 2) {< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "keywordflow" > return< / span > util::Status(< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   util::error::INVALID_ARGUMENT,< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   absl::StrCat(< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < span class = "stringliteral" > " There should be num_colors-1 color cardinalities in the" < / span > < / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "stringliteral" > " header of ' " < / span > ,< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   filename, < span class = "stringliteral" > " ' (where num_colors=" < / span > , num_colors,< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "stringliteral" > " ): the last color cardinality should be" < / span > , < span class = "stringliteral" > " skipped." < / span > ));< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   }< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   num_nodes_with_color_or_null-> reserve(num_colors);< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "keywordtype" > int< / span > num_nodes_left = num_nodes;< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 3; i < header_ints.size(); ++i) {< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   num_nodes_with_color_or_null-> push_back(header_ints[i]);< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   num_nodes_left -= header_ints[i];< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < span class = "keywordflow" > if< / span > (header_ints[i] < = 0 || num_nodes_left < = 0) {< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "keywordflow" > return< / span > util::Status(< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   util::error::INVALID_ARGUMENT,< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   absl::StrCat(< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < span class = "stringliteral" > " The color cardinalities in the header of ' " < / span > , filename,< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "stringliteral" > " should always be > 0 and add up to less than the" < / span > < / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "stringliteral" > " total number of nodes." < / span > ));< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   }< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   }< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   num_nodes_with_color_or_null-> push_back(num_nodes_left);< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   }< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   }< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "keyword" > const< / span > int64 num_arcs = (directed ? 1 : 2) * num_expected_lines;< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   graph.reset(< span class = "keyword" > new< / span > < a class = "code" href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > Graph< / a > (num_nodes, num_arcs));< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   }< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   int64_t node1 = -1;< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   int64_t node2 = -1;< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < span class = "keywordflow" > if< / span > (sscanf(line.c_str(), < span class = "stringliteral" > " %ld %ld" < / span > , & node1, & node2) != 2 || node1 < 0 ||< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   node2 < 0 || node1 > = num_nodes || node2 > = num_nodes) {< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < span class = "keywordflow" > return< / span > util::Status(< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   util::error::INVALID_ARGUMENT,< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   absl::StrCat(< span class = "stringliteral" > " In ' " < / span > , filename, < span class = "stringliteral" > " ' , line " < / span > , num_lines_read,< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "stringliteral" > " : Expected two" < / span > , < span class = "stringliteral" > " integers in the range [0, " < / span > ,< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   num_nodes, < span class = "stringliteral" > " )." < / span > ));< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   }< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "comment" > // We don' t add superfluous arcs to the graph, but we still keep reading< / span > < / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < span class = "comment" > // the file, to get better error messages: we want to know the actual< / span > < / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < span class = "comment" > // number of lines, and also want to check the validity of the superfluous< / span > < / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "comment" > // arcs (i.e. that their src/dst nodes are ok).< / span > < / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   < span class = "keywordflow" > if< / span > (num_lines_read > num_expected_lines + 1) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   graph-> AddArc(node1, node2);< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   < span class = "keywordflow" > if< / span > (!directed & & node1 != node2) graph-> AddArc(node2, node1);< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   }< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   < span class = "keywordflow" > if< / span > (num_lines_read == 0) {< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < span class = "keywordflow" > return< / span > util::Status(util::error::INVALID_ARGUMENT, < span class = "stringliteral" > " Unknown or empty file" < / span > );< / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   }< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < span class = "keywordflow" > if< / span > (num_lines_read != num_expected_lines + 1) {< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < span class = "keywordflow" > return< / span > util::Status(util::error::INVALID_ARGUMENT,< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   absl::StrCat(< span class = "stringliteral" > " The number of arcs/edges in ' " < / span > , filename,< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "stringliteral" > " ' (" < / span > , num_lines_read - 1,< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < span class = "stringliteral" > " does not match the value announced in" < / span > ,< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "stringliteral" > " the header (" < / span > , num_expected_lines, < span class = "stringliteral" > " )" < / span > ));< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   }< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   graph-> Build();< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   < span class = "keywordflow" > return< / span > graph.release();< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   }< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   < / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > Graph> < / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceutil.html#a865d24e5d4cab584316eabc40aa50714" > 223< / a > < / span >   util::Status < a class = "code" href = "namespaceutil.html#a865d24e5d4cab584316eabc40aa50714" > WriteGraphToFile< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "classutil_1_1ListGraph.html" > Graph< / a > & graph, < span class = "keyword" > const< / span > std::string& filename,< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   < span class = "keywordtype" > bool< / span > directed,< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   < span class = "keyword" > const< / span > std::vector< int> & num_nodes_with_color) {< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   FILE* f = fopen(filename.c_str(), < span class = "stringliteral" > " w" < / span > );< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   < span class = "keywordflow" > if< / span > (f == < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   < span class = "keywordflow" > return< / span > util::Status(util::error::INVALID_ARGUMENT,< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   < span class = "stringliteral" > " Could not open file: ' " < / span > + filename + < span class = "stringliteral" > " ' " < / span > );< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   }< / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   < span class = "comment" > // In undirected mode, we must count the self-arcs separately. All other arcs< / span > < / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < span class = "comment" > // should be duplicated.< / span > < / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   < span class = "keywordtype" > int< / span > num_self_arcs = 0;< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < span class = "keywordflow" > if< / span > (!directed) {< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#aec05ff3d270a5f888e1623c2a99ff2aa" > Graph::NodeIndex< / a > node : graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a8a40f2c75615a26ba71e94dd7d42f481" > AllNodes< / a > ()) {< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#a92531459eff09455cfa63976f5024906" > Graph::ArcIndex< / a > arc : graph.< a class = "code" href = "classutil_1_1ListGraph.html#ad7db584fc1fe14ce9296131fda625994" > OutgoingArcs< / a > (node)) {< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < span class = "keywordflow" > if< / span > (graph.< a class = "code" href = "classutil_1_1ListGraph.html#aceb0938bcb2e8e5f37986d4cf8e3a955" > Head< / a > (arc) == node) ++num_self_arcs;< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   }< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   }< / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < span class = "keywordflow" > if< / span > ((graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a4d3fc55a2fe209a908470199437cec9a" > num_arcs< / a > () - num_self_arcs) % 2 != 0) {< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   fclose(f);< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   < span class = "keywordflow" > return< / span > util::Status(util::error::INVALID_ARGUMENT,< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   < span class = "stringliteral" > " WriteGraphToFile() called with directed=false" < / span > < / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < span class = "stringliteral" > " and with a graph with an odd number of (non-self)" < / span > < / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < span class = "stringliteral" > " arcs!" < / span > );< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   }< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   }< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   absl::FPrintF(< / div >
2020-01-27 13:48:26 +01:00
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   f, < span class = "stringliteral" > " %d %d" < / span > , < span class = "keyword" > static_cast< < / span > int64< span class = "keyword" > > < / span > (graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a6a2df5042167b234f6dc3aed4acfa6c9" > num_nodes< / a > ()),< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   < span class = "keyword" > static_cast< < / span > int64< span class = "keyword" > > < / span > (directed ? graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a4d3fc55a2fe209a908470199437cec9a" > num_arcs< / a > ()< / div >
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< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   : (graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a4d3fc55a2fe209a908470199437cec9a" > num_arcs< / a > () + num_self_arcs) / 2));< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   < span class = "keywordflow" > if< / span > (!num_nodes_with_color.empty()) {< / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   < span class = "keywordflow" > if< / span > (std::accumulate(num_nodes_with_color.begin(),< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   num_nodes_with_color.end(), 0) != graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a6a2df5042167b234f6dc3aed4acfa6c9" > num_nodes< / a > () ||< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   *std::min_element(num_nodes_with_color.begin(),< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   num_nodes_with_color.end()) < = 0) {< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   < span class = "keywordflow" > return< / span > util::Status(util::error::INVALID_ARGUMENT,< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   < span class = "stringliteral" > " WriteGraphToFile() called with invalid coloring." < / span > );< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   }< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   fprintf(f, < span class = "stringliteral" > " %lu" < / span > , num_nodes_with_color.size());< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < num_nodes_with_color.size() - 1; ++i) {< / div >
2020-01-27 13:48:26 +01:00
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   absl::FPrintF(f, < span class = "stringliteral" > " %d" < / span > , < span class = "keyword" > static_cast< < / span > int64< span class = "keyword" > > < / span > (num_nodes_with_color[i]));< / div >
2019-11-14 13:52:51 -08:00
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   }< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   }< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   fprintf(f, < span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   < / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#aec05ff3d270a5f888e1623c2a99ff2aa" > Graph::NodeIndex< / a > node : graph.< a class = "code" href = "classutil_1_1BaseGraph.html#a8a40f2c75615a26ba71e94dd7d42f481" > AllNodes< / a > ()) {< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#a92531459eff09455cfa63976f5024906" > Graph::ArcIndex< / a > arc : graph.< a class = "code" href = "classutil_1_1ListGraph.html#ad7db584fc1fe14ce9296131fda625994" > OutgoingArcs< / a > (node)) {< / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   < span class = "keyword" > const< / span > < span class = "keyword" > typename< / span > < a class = "code" href = "classutil_1_1BaseGraph.html#aec05ff3d270a5f888e1623c2a99ff2aa" > Graph::NodeIndex< / a > head = graph.< a class = "code" href = "classutil_1_1ListGraph.html#aceb0938bcb2e8e5f37986d4cf8e3a955" > Head< / a > (arc);< / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   < span class = "keywordflow" > if< / span > (directed || head > = node) {< / div >
2020-01-27 13:48:26 +01:00
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   absl::FPrintF(f, < span class = "stringliteral" > " %d %d\n" < / span > , < span class = "keyword" > static_cast< < / span > int64< span class = "keyword" > > < / span > (node),< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   < span class = "keyword" > static_cast< < / span > uint64< span class = "keyword" > > < / span > (head));< / div >
2019-11-14 13:52:51 -08:00
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   }< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   }< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   }< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < span class = "keywordflow" > if< / span > (fclose(f) != 0) {< / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < span class = "keywordflow" > return< / span > util::Status(util::error::INTERNAL,< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < span class = "stringliteral" > " Could not close file ' " < / span > + filename + < span class = "stringliteral" > " ' " < / span > );< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   }< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < span class = "keywordflow" > return< / span > util::Status::OK;< / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   }< / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   } < span class = "comment" > // namespace util< / span > < / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < span class = "preprocessor" > #endif // UTIL_GRAPH_IO_H_< / span > < / div >
2019-06-13 15:36:14 +02:00
< / div > <!-- fragment --> < / div > <!-- contents -->
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< div class = "ttc" id = "aclassutil_1_1BaseGraph_html_a8a40f2c75615a26ba71e94dd7d42f481" > < div class = "ttname" > < a href = "classutil_1_1BaseGraph.html#a8a40f2c75615a26ba71e94dd7d42f481" > util::BaseGraph::AllNodes< / a > < / div > < div class = "ttdeci" > IntegerRange< NodeIndex > AllNodes() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l00929" > graph.h:929< / a > < / div > < / div >
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< div class = "ttc" id = "anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1" > < div class = "ttname" > < a href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1" > util::PRINT_GRAPH_ADJACENCY_LISTS< / a > < / div > < div class = "ttdeci" > @ PRINT_GRAPH_ADJACENCY_LISTS< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "io_8h_source.html#l00044" > io.h:44< / a > < / div > < / div >
< div class = "ttc" id = "aclassutil_1_1BaseGraph_html_aec05ff3d270a5f888e1623c2a99ff2aa" > < div class = "ttname" > < a href = "classutil_1_1BaseGraph.html#aec05ff3d270a5f888e1623c2a99ff2aa" > util::BaseGraph< int32, int32, false > ::NodeIndex< / a > < / div > < div class = "ttdeci" > int32 NodeIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l00189" > graph.h:189< / a > < / div > < / div >
2019-11-14 13:52:51 -08:00
< div class = "ttc" id = "anamespaceutil_html_a865d24e5d4cab584316eabc40aa50714" > < div class = "ttname" > < a href = "namespaceutil.html#a865d24e5d4cab584316eabc40aa50714" > util::WriteGraphToFile< / a > < / div > < div class = "ttdeci" > util::Status WriteGraphToFile(const Graph & graph, const std::string & filename, bool directed, const std::vector< int > & num_nodes_with_color)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "io_8h_source.html#l00223" > io.h:223< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceutil_html_a2f76166dbe0c4055a1f256235ad00478" > < div class = "ttname" > < a href = "namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478" > util::Graph< / a > < / div > < div class = "ttdeci" > ListGraph Graph< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l02356" > graph.h:2356< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceutil_html_a372b5c94ec5d30f923449516ebc2a963" > < div class = "ttname" > < a href = "namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963" > util::GraphToString< / a > < / div > < div class = "ttdeci" > std::string GraphToString(const Graph & graph, GraphToStringFormat format)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "io_8h_source.html#l00107" > io.h:107< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9" > < div class = "ttname" > < a href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9" > util::GraphToStringFormat< / a > < / div > < div class = "ttdeci" > GraphToStringFormat< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "io_8h_source.html#l00038" > io.h:38< / a > < / div > < / div >
< div class = "ttc" id = "aclassutil_1_1BaseGraph_html_a4d3fc55a2fe209a908470199437cec9a" > < div class = "ttname" > < a href = "classutil_1_1BaseGraph.html#a4d3fc55a2fe209a908470199437cec9a" > util::BaseGraph::num_arcs< / a > < / div > < div class = "ttdeci" > ArcIndexType num_arcs() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l00204" > graph.h:204< / a > < / div > < / div >
< div class = "ttc" id = "aclassutil_1_1ListGraph_html_aceb0938bcb2e8e5f37986d4cf8e3a955" > < div class = "ttname" > < a href = "classutil_1_1ListGraph.html#aceb0938bcb2e8e5f37986d4cf8e3a955" > util::ListGraph::Head< / a > < / div > < div class = "ttdeci" > NodeIndexType Head(ArcIndexType arc) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l01112" > graph.h:1112< / a > < / div > < / div >
2020-01-27 13:48:26 +01:00
< div class = "ttc" id = "anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d" > < div class = "ttname" > < a href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d" > util::PRINT_GRAPH_ADJACENCY_LISTS_SORTED< / a > < / div > < div class = "ttdeci" > @ PRINT_GRAPH_ADJACENCY_LISTS_SORTED< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "io_8h_source.html#l00047" > io.h:47< / a > < / div > < / div >
2019-11-14 13:52:51 -08:00
< div class = "ttc" id = "anamespaceutil_html_a33f4d0b03061ce4bcb6b7b28b3725053" > < div class = "ttname" > < a href = "namespaceutil.html#a33f4d0b03061ce4bcb6b7b28b3725053" > util::ReadGraphFile< / a > < / div > < div class = "ttdeci" > util::StatusOr< Graph * > ReadGraphFile(const std::string & filename, bool directed, std::vector< int > *num_nodes_with_color_or_null)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "io_8h_source.html#l00132" > io.h:132< / a > < / div > < / div >
2020-01-27 13:48:26 +01:00
< div class = "ttc" id = "aclassutil_1_1BaseGraph_html_a92531459eff09455cfa63976f5024906" > < div class = "ttname" > < a href = "classutil_1_1BaseGraph.html#a92531459eff09455cfa63976f5024906" > util::BaseGraph< int32, int32, false > ::ArcIndex< / a > < / div > < div class = "ttdeci" > int32 ArcIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l00190" > graph.h:190< / a > < / div > < / div >
2019-11-14 13:52:51 -08:00
< div class = "ttc" id = "aclassutil_1_1ListGraph_html_ad7db584fc1fe14ce9296131fda625994" > < div class = "ttname" > < a href = "classutil_1_1ListGraph.html#ad7db584fc1fe14ce9296131fda625994" > util::ListGraph::OutgoingArcs< / a > < / div > < div class = "ttdeci" > BeginEndWrapper< OutgoingArcIterator > OutgoingArcs(NodeIndexType node) const< / div > < / div >
2020-01-27 13:48:26 +01:00
< div class = "ttc" id = "anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0" > < div class = "ttname" > < a href = "namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0" > util::PRINT_GRAPH_ARCS< / a > < / div > < div class = "ttdeci" > @ PRINT_GRAPH_ARCS< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "io_8h_source.html#l00040" > io.h:40< / a > < / div > < / div >
2019-11-14 13:52:51 -08:00
< div class = "ttc" id = "agraph_8h_html" > < div class = "ttname" > < a href = "graph_8h.html" > graph.h< / a > < / div > < / div >
< div class = "ttc" id = "aclassutil_1_1ListGraph_html" > < div class = "ttname" > < a href = "classutil_1_1ListGraph.html" > util::ListGraph< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l00297" > graph.h:297< / a > < / div > < / div >
< div class = "ttc" id = "aclassutil_1_1BaseGraph_html_a6a2df5042167b234f6dc3aed4acfa6c9" > < div class = "ttname" > < a href = "classutil_1_1BaseGraph.html#a6a2df5042167b234f6dc3aed4acfa6c9" > util::BaseGraph::num_nodes< / a > < / div > < div class = "ttdeci" > NodeIndexType num_nodes() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "graph_8h_source.html#l00201" > graph.h:201< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceutil_html" > < div class = "ttname" > < a href = "namespaceutil.html" > util< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8h_source.html#l00056" > connected_components.h:56< / a > < / div > < / div >
2019-08-07 18:01:08 -07:00
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2019-06-13 15:36:14 +02:00
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