void TGraphCascade::TopologicalSort(TIntV& SortedNIdV) {
int Nodes = Graph.GetNodes();
SortedNIdV.Gen(Nodes, 0); // result
THash<TInt, TBool> Marks(Nodes); // nodeid -> mark map
THash<TInt,TBool> TempMarks(Nodes); // nodeid -> temp mark map
THash<TInt, TBool> Added(Nodes);
TIntV NIdV; Graph.GetNIdV(NIdV); // all node ids
// set marks
for (int NodeN = 0; NodeN < Nodes; NodeN++) {
int NodeId = NIdV[NodeN];
Marks.AddDat(NodeId, false);
TempMarks.AddDat(NodeId, false);
Added.AddDat(NodeId, false);
}
TSStack<TInt> Stack;
for (int NodeN = 0; NodeN < Nodes; NodeN++) {
int NodeId = NIdV[NodeN];
// select an unmarked node
if (!Marks.GetDat(NodeId)) {
Stack.Push(NodeId);
while (!Stack.Empty()) {
// visit TopNode
int TopNodeId = Stack.Top();
Marks.GetDat(TopNodeId) = true;
TempMarks.GetDat(TopNodeId) = true;
// add children, set their temp marks to true
TNGraph::TNodeI NI = Graph.GetNI(TopNodeId);
int Children = NI.GetOutDeg();
bool IsFinal = true;
for (int ChildN = 0; ChildN < Children; ChildN++) {
int ChildId = NI.GetOutNId(ChildN);
EAssertR(!TempMarks.GetDat(ChildId), "TGraphCascade::TopologicalSort: the graph is not a DAG!");
if (!Marks.GetDat(ChildId)) {
// unvisited node
IsFinal = false;
Stack.Push(ChildId);
}
}
if (IsFinal) {
// push TopNode to tail
if (!Added.GetDat(TopNodeId)) {
SortedNIdV.Add(TopNodeId);
Added.GetDat(TopNodeId) = true;
}
TempMarks.GetDat(TopNodeId) = false;
Stack.Pop();
}
}
}
}
SortedNIdV.Reverse();
}
PDzsHKwBs TDzsHKwBs::LoadTxt(const TStr& FNm){
TSStack<PXmlTok> TokS;
PXmlTok RootTok;
PSIn SIn=TFIn::New(FNm);
TILx Lx(SIn, TFSet()|iloTabSep);
Lx.GetSym(syTab, syStr, syEoln, syEof);
int PrevLev=-1;
while (Lx.Sym!=syEof){
printf(".");
int Lev=0; while (Lx.Sym==syTab){Lev++; Lx.GetSym(syTab, syStr);}
IAssert(Lx.Sym==syStr);
for (int ChN=0; ChN<Lx.Str.Len(); ChN++){
uchar Ch=Lx.Str[ChN];
if (Ch>127){printf("%c", Ch); Fail;}}
// create topic
PXmlTok TopicTok=TXmlTok::New(xsyTag, "topic");
//TopicTok->AddArg("title", Lx.Str);
// topic title
TStr TitleStr=TXmlLx::GetChRefFromYuEntRef(Lx.Str);
PXmlTok TitleTok=TXmlTok::New(xsyTag, "title");
TopicTok->AddSubTok(TitleTok);
PXmlTok TitleStrTok=TXmlTok::New(xsyStr, TitleStr);
TitleTok->AddSubTok(TitleStrTok);
// topic query
TStr QueryStr=GetQueryStr(TitleStr);
PXmlTok QueryTok=TXmlTok::New(xsyTag, "query");
TopicTok->AddSubTok(QueryTok);
PXmlTok QueryStrTok=TXmlTok::New(xsyStr, QueryStr);
QueryTok->AddSubTok(QueryStrTok);
// insert topic into tree
if (Lev==0){
IAssert(RootTok.Empty());
RootTok=TopicTok;
TokS.Push(RootTok);
} else
if (PrevLev+1==Lev){
TokS.Top()->AddSubTok(TopicTok);
TokS.Push(TopicTok);
} else
if (PrevLev==Lev){
TokS.Pop();
TokS.Top()->AddSubTok(TopicTok);
TokS.Push(TopicTok);
} else
if (PrevLev>Lev){
int UpLev=PrevLev;
while (UpLev>Lev){UpLev--; TokS.Pop();}
TokS.Pop();
TokS.Top()->AddSubTok(TopicTok);
TokS.Push(TopicTok);
} else {
Fail;
}
while (Lx.GetSym()!=syEoln){}
Lx.GetSym(syTab, syStr, syEoln, syEof);
PrevLev=Lev;
//if (Lx.SymLnN>100){break;}
}
PXmlDoc XmlDoc=TXmlDoc::New(RootTok);
PDzsHKwBs HKwBs=TDzsHKwBs::New(XmlDoc);
return HKwBs;
}