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/* LIBDGL -- a Directed Graph Library implementation
* Copyright (C) 2002 Roberto Micarelli
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* Source best viewed with tabstop=4
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <time.h>
#include <errno.h>
#include <math.h>
#include "../type.h"
#include "../graph.h"
#include "opt.h"
static int _clipper(dglGraph_s * pgraphIn,
dglGraph_s * pgraphOut,
dglSpanClipInput_s * pArgIn,
dglSpanClipOutput_s * pArgOut,
void * pvArg)
{
return 0;
}
int main( int argc , char ** argv )
{
dglGraph_s graph , graphOut;
dglInt32_t nVertex;
int nret , fd;
/* program options
*/
char * pszGraph;
char * pszGraphOut;
char * pszVertex;
GNO_BEGIN/* short long default variable help */
GNO_OPTION( "g", "graph", NULL , & pszGraph , "Input Graph file" )
GNO_OPTION( "o", "graphout", NULL , & pszGraphOut , "Output Graph file" )
GNO_OPTION( "v", "vertex", NULL , & pszVertex , "Vertex Node Id" )
GNO_END
if ( GNO_PARSE( argc , argv ) < 0 )
{
return 1;
}
/*
* options parsed
*/
if ( pszVertex == NULL ) {
GNO_HELP("span usage");
return 1;
}
nVertex = atol(pszVertex);
printf( "Graph read:\n" );
if ( (fd = open( pszGraph , O_RDONLY )) < 0 )
{
perror( "open" ); return 1;
}
nret = dglRead( & graph , fd );
if ( nret < 0 ) {
fprintf( stderr , "dglRead error: %s\n", dglStrerror( & graph ) );
return 1;
}
close( fd );
printf( "Done.\n" );
printf( "Graph depth spanning:\n" );
nret = dglDepthSpanning( & graph , & graphOut , nVertex , _clipper , NULL );
if ( nret < 0 ) {
fprintf( stderr , "dglDepthSpanning error: %s\n", dglStrerror( & graph ) );
return 1;
}
printf( "Done.\n" );
printf( "Graph flatten:\n" );
nret = dglFlatten( & graphOut );
printf( "Done.\n" );
if ( dglGet_EdgeCount( & graphOut ) > 0 ) {
if ( pszGraphOut ) {
printf( "Graph write:\n" );
if ( (fd = open( pszGraphOut , O_WRONLY | O_CREAT | O_TRUNC, 0666 )) < 0 )
{
perror( "open" ); return 1;
}
dglWrite( & graphOut, fd );
if ( nret < 0 )
{
fprintf( stderr , "dglWrite error: %s\n" , dglStrerror( & graphOut ) );
return 1;
}
close( fd );
printf( "Done.\n" );
}
}
else {
printf( "Empty span. No output produced.\n" );
}
dglRelease( & graph );
dglRelease( & graphOut );
return 0;
}
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