unflatten.c

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00001 /* LIBDGL -- a Directed Graph Library implementation
00002  * Copyright (C) 2002 Roberto Micarelli
00003  *
00004  * This program is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation; either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  */
00018 
00019 /*
00020  * Source best viewed with tabstop=4
00021  */
00022 
00023 #include <stdio.h>
00024 #include <sys/types.h>
00025 #include <sys/stat.h>
00026 #include <unistd.h>
00027 #include <stdlib.h>
00028 #include <fcntl.h>
00029 #include <time.h>
00030 #include <errno.h>
00031 #include <math.h>
00032 
00033 #include "../type.h"
00034 #include "../graph.h"
00035 
00036 #include "opt.h"
00037 
00038 int main(int argc, char **argv)
00039 {
00040     dglGraph_s graph;
00041     int nret, fd;
00042 
00043     /* program options
00044      */
00045     char *pszGraph;
00046     char *pszGraphOut;
00047 
00048     GNO_BEGIN                   /* short   long                default     variable        help */
00049         GNO_OPTION("g", "graph", NULL, &pszGraph, "Input Graph file")
00050         GNO_OPTION("o", "graphout", NULL, &pszGraphOut, "Output Graph file")
00051     GNO_END if (GNO_PARSE(argc, argv) < 0)
00052     {
00053         return 1;
00054     }
00055     /*
00056      * options parsed
00057      */
00058 
00059     printf("Graph read:\n");
00060     if ((fd = open(pszGraph, O_RDONLY)) < 0) {
00061         perror("open");
00062         return 1;
00063     }
00064     nret = dglRead(&graph, fd);
00065     if (nret < 0) {
00066         fprintf(stderr, "dglRead error: %s\n", dglStrerror(&graph));
00067         return 1;
00068     }
00069     close(fd);
00070     printf("Done.\n");
00071 
00072 
00073     printf("Graph unflatten:\n");
00074     nret = dglUnflatten(&graph);
00075     if (nret < 0) {
00076         fprintf(stderr, "dglUnflatten error: %s\n", dglStrerror(&graph));
00077         return 1;
00078     }
00079     printf("Done.\n");
00080 
00081 
00082     printf("Graph flatten:\n");
00083     nret = dglFlatten(&graph);
00084     printf("Done.\n");
00085 
00086 
00087     if (pszGraphOut) {
00088         printf("Graph write:\n");
00089         if ((fd = open(pszGraphOut, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) {
00090             perror("open");
00091             return 1;
00092         }
00093         dglWrite(&graph, fd);
00094         if (nret < 0) {
00095             fprintf(stderr, "dglWrite error: %s\n", dglStrerror(&graph));
00096             return 1;
00097         }
00098         close(fd);
00099         printf("Done.\n");
00100     }
00101 
00102     dglRelease(&graph);
00103     return 0;
00104 }

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