gvprmain.c

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
 
/*
 * gvpr: graph pattern recognizer
 *
 * Written by Emden Gansner
 */
 
 
#include "config.h"
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
 
#include <cgraph/cgraph.h>
#include <cgraph/exit.h>
#include <gvpr/gvpr.h>
 
#ifdef DEBUG
static ssize_t outfn (void* sp, const char *buf, size_t nbyte, void* dp)
{
  if (nbyte > (size_t)INT_MAX) {
    return -1;
  }
  return printf("<stdout>%.*s", (int)nbyte, buf);
}
 
static ssize_t errfn (void* sp, const char *buf, size_t nbyte, void* dp)
{
  if (nbyte > (size_t)INT_MAX) {
    return -1;
  }
  return fprintf(stderr, "<stderr>%.*s", (int)nbyte, buf);
}
 
static int iofread(void *chan, char *buf, int bufsize)
{
  return (int)fread(buf, 1, (size_t)bufsize, chan);
}
 
static int ioputstr(void *chan, const char *str)
{
  return fputs(str, chan);
}
 
static int ioflush(void *chan)
{
  return fflush(chan);
}
 
static Agiodisc_t gprIoDisc = { iofread, ioputstr, ioflush };
 
static Agdisc_t gprDisc = { &AgIdDisc, &gprIoDisc };
 
int
main (int argc, char* argv[])
{
    Agraph_t* gs[2];
    Agraph_t* g = agread(stdin, &gprDisc);
    int rv;
    gvpropts opts;
 
    gs[0] = g;
    gs[1] = 0;
    opts.ingraphs = gs;
    opts.out = outfn;
    opts.err = errfn;
    opts.flags = GV_USE_OUTGRAPH;
    opts.bindings = 0;
    
    rv = gvpr (argc, argv, &opts);
 
    fprintf(stderr, "rv %d\n", rv);
 
    rv = gvpr (argc, argv, &opts);
 
    graphviz_exit(rv);
}
 
#else
int
main (int argc, char* argv[])
{
    gvpropts opts;
    opts.ingraphs = 0;
    opts.out = 0;
    opts.err = 0;
    opts.flags = GV_USE_EXIT;
    opts.bindings = 0;
    
    graphviz_exit(gvpr(argc, argv, &opts));
}
 
#endif