int legacyCommandLine(int argc, char *argv[])
{
graphP theGraph = gp_New();
int Result;
Result = gp_Read(theGraph, argv[1]);
if (Result != OK)
{
if (Result != NONEMBEDDABLE)
{
if (strlen(argv[1]) > MAXLINE - 100)
sprintf(Line, "Failed to read graph\n");
else
sprintf(Line, "Failed to read graph %s\n", argv[1]);
ErrorMessage(Line);
return -2;
}
}
Result = gp_Embed(theGraph, EMBEDFLAGS_PLANAR);
if (Result == OK)
{
gp_SortVertices(theGraph);
gp_Write(theGraph, argv[2], WRITE_ADJLIST);
}
else if (Result == NONEMBEDDABLE)
{
if (argc >= 5 && strcmp(argv[3], "-n")==0)
{
gp_SortVertices(theGraph);
gp_Write(theGraph, argv[4], WRITE_ADJLIST);
}
}
else
Result = NOTOK;
gp_Free(&theGraph);
// In the legacy 1.x versions, OK/NONEMBEDDABLE was 0 and NOTOK was -2
return Result==OK || Result==NONEMBEDDABLE ? 0 : -2;
}
int RandomGraphs(char command, int NumGraphs, int SizeOfGraphs)
{
char theFileName[256];
int K, countUpdateFreq;
int Result=OK, MainStatistic=0;
int ObstructionMinorFreqs[NUM_MINORS];
graphP theGraph=NULL, origGraph=NULL;
platform_time start, end;
int embedFlags = GetEmbedFlags(command);
int ReuseGraphs = TRUE;
GetNumberIfZero(&NumGraphs, "Enter number of graphs to generate:", 1, 1000000000);
GetNumberIfZero(&SizeOfGraphs, "Enter size of graphs:", 1, 10000);
theGraph = MakeGraph(SizeOfGraphs, command);
origGraph = MakeGraph(SizeOfGraphs, command);
if (theGraph == NULL || origGraph == NULL)
{
gp_Free(&theGraph);
return NOTOK;
}
// Initialize a secondary statistics array
for (K=0; K < NUM_MINORS; K++)
ObstructionMinorFreqs[K] = 0;
// Seed the random number generator with "now". Do it after any prompting
// to tie randomness to human process of answering the prompt.
srand(time(NULL));
// Select a counter update frequency that updates more frequently with larger graphs
// and which is relatively prime with 10 so that all digits of the count will change
// even though we aren't showing the count value on every iteration
countUpdateFreq = 3579 / SizeOfGraphs;
countUpdateFreq = countUpdateFreq < 1 ? 1 : countUpdateFreq;
countUpdateFreq = countUpdateFreq % 2 == 0 ? countUpdateFreq+1 : countUpdateFreq;
countUpdateFreq = countUpdateFreq % 5 == 0 ? countUpdateFreq+2 : countUpdateFreq;
// Start the count
fprintf(stdout, "0\r");
fflush(stdout);
// Start the timer
platform_GetTime(start);
// Generate and process the number of graphs requested
for (K=0; K < NumGraphs; K++)
{
if ((Result = gp_CreateRandomGraph(theGraph)) == OK)
{
if (tolower(OrigOut)=='y')
{
sprintf(theFileName, "random\\%d.txt", K%10);
gp_Write(theGraph, theFileName, WRITE_ADJLIST);
}
gp_CopyGraph(origGraph, theGraph);
if (strchr("pdo234", command))
{
Result = gp_Embed(theGraph, embedFlags);
if (gp_TestEmbedResultIntegrity(theGraph, origGraph, Result) != Result)
Result = NOTOK;
if (Result == OK)
{
MainStatistic++;
if (tolower(EmbeddableOut) == 'y')
{
sprintf(theFileName, "embedded\\%d.txt", K%10);
gp_Write(theGraph, theFileName, WRITE_ADJMATRIX);
}
if (tolower(AdjListsForEmbeddingsOut) == 'y')
{
sprintf(theFileName, "adjlist\\%d.txt", K%10);
gp_Write(theGraph, theFileName, WRITE_ADJLIST);
}
}
else if (Result == NONEMBEDDABLE)
{
if (embedFlags == EMBEDFLAGS_PLANAR || embedFlags == EMBEDFLAGS_OUTERPLANAR)
{
if (theGraph->IC.minorType & MINORTYPE_A)
ObstructionMinorFreqs[0] ++;
else if (theGraph->IC.minorType & MINORTYPE_B)
ObstructionMinorFreqs[1] ++;
else if (theGraph->IC.minorType & MINORTYPE_C)
ObstructionMinorFreqs[2] ++;
else if (theGraph->IC.minorType & MINORTYPE_D)
ObstructionMinorFreqs[3] ++;
else if (theGraph->IC.minorType & MINORTYPE_E)
ObstructionMinorFreqs[4] ++;
if (theGraph->IC.minorType & MINORTYPE_E1)
ObstructionMinorFreqs[5] ++;
else if (theGraph->IC.minorType & MINORTYPE_E2)
ObstructionMinorFreqs[6] ++;
else if (theGraph->IC.minorType & MINORTYPE_E3)
ObstructionMinorFreqs[7] ++;
else if (theGraph->IC.minorType & MINORTYPE_E4)
ObstructionMinorFreqs[8] ++;
if (tolower(ObstructedOut) == 'y')
{
sprintf(theFileName, "obstructed\\%d.txt", K%10);
gp_Write(theGraph, theFileName, WRITE_ADJMATRIX);
}
}
}
}
else if (command == 'c')
{
if ((Result = gp_ColorVertices(theGraph)) == OK)
Result = gp_ColorVerticesIntegrityCheck(theGraph, origGraph);
if (Result == OK && gp_GetNumColorsUsed(theGraph) <= 5)
MainStatistic++;
}
// If there is an error in processing, then write the file for debugging
if (Result != OK && Result != NONEMBEDDABLE)
{
sprintf(theFileName, "error\\%d.txt", K%10);
gp_Write(origGraph, theFileName, WRITE_ADJLIST);
}
}
// Reinitialize or recreate graphs for next iteration
ReinitializeGraph(&theGraph, ReuseGraphs, command);
ReinitializeGraph(&origGraph, ReuseGraphs, command);
// Show progress, but not so often that it bogs down progress
if (quietMode == 'n' && (K+1) % countUpdateFreq == 0)
{
fprintf(stdout, "%d\r", K+1);
fflush(stdout);
}
// Terminate loop on error
if (Result != OK && Result != NONEMBEDDABLE)
{
ErrorMessage("\nError found\n");
Result = NOTOK;
break;
}
}
// Stop the timer
platform_GetTime(end);
// Finish the count
fprintf(stdout, "%d\n", NumGraphs);
fflush(stdout);
// Free the graph structures created before the loop
gp_Free(&theGraph);
gp_Free(&origGraph);
// Print some demographic results
if (Result == OK || Result == NONEMBEDDABLE)
Message("\nNo Errors Found.");
sprintf(Line, "\nDone (%.3lf seconds).\n", platform_GetDuration(start,end));
Message(Line);
// Report statistics for planar or outerplanar embedding
if (embedFlags == EMBEDFLAGS_PLANAR || embedFlags == EMBEDFLAGS_OUTERPLANAR)
{
sprintf(Line, "Num Embedded=%d.\n", MainStatistic);
Message(Line);
for (K=0; K<5; K++)
{
// Outerplanarity does not produces minors C and D
if (embedFlags == EMBEDFLAGS_OUTERPLANAR && (K==2 || K==3))
continue;
sprintf(Line, "Minor %c = %d\n", K+'A', ObstructionMinorFreqs[K]);
Message(Line);
}
if (!(embedFlags & ~EMBEDFLAGS_PLANAR))
{
sprintf(Line, "\nNote: E1 are added to C, E2 are added to A, and E=E3+E4+K5 homeomorphs.\n");
Message(Line);
for (K=5; K<NUM_MINORS; K++)
{
sprintf(Line, "Minor E%d = %d\n", K-4, ObstructionMinorFreqs[K]);
Message(Line);
}
}
}
// Report statistics for graph drawing
else if (embedFlags == EMBEDFLAGS_DRAWPLANAR)
{
sprintf(Line, "Num Graphs Embedded and Drawn=%d.\n", MainStatistic);
Message(Line);
}
// Report statistics for subgraph homeomorphism algorithms
else if (embedFlags == EMBEDFLAGS_SEARCHFORK23)
{
sprintf(Line, "Of the generated graphs, %d did not contain a K_{2,3} homeomorph as a subgraph.\n", MainStatistic);
Message(Line);
}
else if (embedFlags == EMBEDFLAGS_SEARCHFORK33)
{
sprintf(Line, "Of the generated graphs, %d did not contain a K_{3,3} homeomorph as a subgraph.\n", MainStatistic);
Message(Line);
}
else if (embedFlags == EMBEDFLAGS_SEARCHFORK4)
{
sprintf(Line, "Of the generated graphs, %d did not contain a K_4 homeomorph as a subgraph.\n", MainStatistic);
Message(Line);
}
// Report statistics for vertex coloring
else if (command == 'c')
{
sprintf(Line, "Num Graphs colored with 5 or fewer colors=%d.\n", MainStatistic);
Message(Line);
}
FlushConsole(stdout);
return Result==OK || Result==NONEMBEDDABLE ? OK : NOTOK;
}
int RandomGraph(char command, int extraEdges, int numVertices, char *outfileName, char *outfile2Name)
{
int Result;
platform_time start, end;
graphP theGraph=NULL, origGraph;
int embedFlags = GetEmbedFlags(command);
char saveEdgeListFormat;
GetNumberIfZero(&numVertices, "Enter number of vertices:", 1, 1000000);
if ((theGraph = MakeGraph(numVertices, command)) == NULL)
return NOTOK;
srand(time(NULL));
Message("Creating the random graph...\n");
platform_GetTime(start);
if (gp_CreateRandomGraphEx(theGraph, 3*numVertices-6+extraEdges) != OK)
{
ErrorMessage("gp_CreateRandomGraphEx() failed\n");
return NOTOK;
}
platform_GetTime(end);
sprintf(Line, "Created random graph with %d edges in %.3lf seconds. ", theGraph->M, platform_GetDuration(start,end));
Message(Line);
FlushConsole(stdout);
// The user may have requested a copy of the random graph before processing
if (outfile2Name != NULL)
{
gp_Write(theGraph, outfile2Name, WRITE_ADJLIST);
}
origGraph = gp_DupGraph(theGraph);
// Do the requested algorithm on the randomly generated graph
Message("Now processing\n");
FlushConsole(stdout);
if (strchr("pdo234", command))
{
platform_GetTime(start);
Result = gp_Embed(theGraph, embedFlags);
platform_GetTime(end);
gp_SortVertices(theGraph);
if (gp_TestEmbedResultIntegrity(theGraph, origGraph, Result) != Result)
Result = NOTOK;
}
else if (command == 'c')
{
platform_GetTime(start);
Result = gp_ColorVertices(theGraph);
platform_GetTime(end);
}
else
Result = NOTOK;
// Write what the algorithm determined and how long it took
WriteAlgorithmResults(theGraph, Result, command, start, end, NULL);
// On successful algorithm result, write the output file and see if the
// user wants the edge list formatted file.
if (Result == OK || Result == NONEMBEDDABLE)
{
if (outfileName != NULL)
gp_Write(theGraph, outfileName, WRITE_ADJLIST);
Prompt("Do you want to save the generated graph in edge list format (y/n)? ");
fflush(stdin);
scanf(" %c", &saveEdgeListFormat);
if (tolower(saveEdgeListFormat) == 'y')
{
char *fileName = "maxPlanarEdgeList.txt";
if (extraEdges > 0)
fileName = "nonPlanarEdgeList.txt";
SaveAsciiGraph(theGraph, fileName);
sprintf(Line, "Edge list format saved to '%s'\n", fileName);
Message(Line);
}
}
else ErrorMessage("Failure occurred");
gp_Free(&theGraph);
gp_Free(&origGraph);
FlushConsole(stdout);
return Result;
}
int SpecificGraph(char command, char *infileName, char *outfileName, char *outfile2Name)
{
graphP theGraph, origGraph;
platform_time start, end;
int Result;
// Get the filename of the graph to test
if ((infileName = ConstructInputFilename(infileName)) == NULL)
return NOTOK;
// Create the graph and, if needed, attach the correct algorithm to it
theGraph = gp_New();
switch (command)
{
case 'd' : gp_AttachDrawPlanar(theGraph); break;
case '2' : gp_AttachK23Search(theGraph); break;
case '3' : gp_AttachK33Search(theGraph); break;
case '4' : gp_AttachK4Search(theGraph); break;
case 'c' : gp_AttachColorVertices(theGraph); break;
}
// Read the graph into memory
Result = gp_Read(theGraph, infileName);
if (Result == NONEMBEDDABLE)
{
Message("The graph contains too many edges.\n");
// Some of the algorithms will still run correctly with some edges removed.
if (strchr("pdo234", command))
{
Message("Some edges were removed, but the algorithm will still run correctly.\n");
Result = OK;
}
}
// If there was an unrecoverable error, report it
if (Result != OK)
ErrorMessage("Failed to read graph\n");
// Otherwise, call the correct algorithm on it
else
{
// Copy the graph for integrity checking
origGraph = gp_DupGraph(theGraph);
// Run the algorithm
if (strchr("pdo234", command))
{
int embedFlags = GetEmbedFlags(command);
platform_GetTime(start);
// gp_CreateDFSTree(theGraph);
// gp_SortVertices(theGraph);
// gp_Write(theGraph, "debug.before.txt", WRITE_DEBUGINFO);
// gp_SortVertices(theGraph);
Result = gp_Embed(theGraph, embedFlags);
platform_GetTime(end);
Result = gp_TestEmbedResultIntegrity(theGraph, origGraph, Result);
}
else
{
platform_GetTime(start);
if (command == 'c')
{
if ((Result = gp_ColorVertices(theGraph)) == OK)
Result = gp_ColorVerticesIntegrityCheck(theGraph, origGraph);
}
else
Result = NOTOK;
platform_GetTime(end);
}
// Write what the algorithm determined and how long it took
WriteAlgorithmResults(theGraph, Result, command, start, end, infileName);
// Free the graph obtained for integrity checking.
gp_Free(&origGraph);
}
// Report an error, if there was one, free the graph, and return
if (Result != OK && Result != NONEMBEDDABLE)
{
ErrorMessage("AN ERROR HAS BEEN DETECTED\n");
Result = NOTOK;
// gp_Write(theGraph, "debug.after.txt", WRITE_DEBUGINFO);
}
// Provide the output file(s)
else
{
// Restore the vertex ordering of the original graph (undo DFS numbering)
if (strchr("pdo234", command))
gp_SortVertices(theGraph);
// Determine the name of the primary output file
outfileName = ConstructPrimaryOutputFilename(infileName, outfileName, command);
// For some algorithms, the primary output file is not always written
if ((strchr("pdo", command) && Result == NONEMBEDDABLE) ||
(strchr("234", command) && Result == OK))
{
// Do not write the file
}
// Write the primary output file, if appropriate to do so
else
{
gp_Write(theGraph, outfileName, WRITE_ADJLIST);
}
// NOW WE WANT TO WRITE THE SECONDARY OUTPUT FILE
// When called from the menu system, we want to write the planar or outerplanar
// obstruction, if one exists. For planar graph drawing, we want the character
// art rendition. An empty but non-NULL string is passed to indicate the necessity
// of selecting a default name for the second output file.
if (outfile2Name != NULL)
{
if ((command == 'p' || command == 'o') && Result == NONEMBEDDABLE)
{
// By default, use the same name as the primary output filename
if (strlen(outfile2Name) == 0)
outfile2Name = outfileName;
gp_Write(theGraph, outfile2Name, WRITE_ADJLIST);
}
else if (command == 'd' && Result == OK)
{
// By default, add ".render.txt" to the primary output filename
if (strlen(outfile2Name) == 0)
strcat((outfile2Name = outfileName), ".render.txt");
gp_DrawPlanar_RenderToFile(theGraph, outfile2Name);
}
}
}
// Free the graph
gp_Free(&theGraph);
// Flush any remaining message content to the user, and return the result
FlushConsole(stdout);
return Result;
}