Attachment 12749 Details for Bug 28989 – Helloworld type script for graphviz

Helloworld type script for graphviz

demo.c (text/x-csrc), 1.92 KB, created by Len Lawrence on 2021-06-04 17:31:23 CEST

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Creator: Len Lawrence

Created: 2021-06-04 17:31:23 CEST

Size: 1.92 KB

patch

obsolete

>/* $Id$ $Revision$ */
>/* vim:set shiftwidth=4 ts=8: */
>
>/*************************************************************************
> * 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
> * http://www.eclipse.org/legal/epl-v10.html
> *
> * Contributors: See CVS logs. Details at http://www.graphviz.org/
> *************************************************************************/
>
>/* Note that, with the call to gvParseArgs(), this application assumes that
> * a known layout algorithm is going to be specified. This can be done either
> * using argv[0] or requiring the user to run this code with a -K flag specifying
> * which layout to use. In the former case, after this program has been built as
> * 'demo', you will need to rename it as one of the installed layout engines such
> * as dot, neato, sfdp, etc. 
> */
>#include <gvc.h>
>
>int main(int argc, char **argv)
>{
>    Agraph_t *g;
>    Agnode_t *n, *m;
>    Agedge_t *e;
>    GVC_t *gvc;
>
>    /* set up a graphviz context */
>    gvc = gvContext();
>
>    /* parse command line args - minimally argv[0] sets layout engine */
>    gvParseArgs(gvc, argc, argv);
>
>    /* Create a simple digraph */
>    g = agopen("g", Agdirected, 0);
>    n = agnode(g, "n", 1);
>    m = agnode(g, "m", 1);
>    e = agedge(g, n, m, 0, 1);
>
>    /* Set an attribute - in this case one that affects the visible rendering */
>    agsafeset(n, "color", "red", "");
>
>    /* Compute a layout using layout engine from command line args */
>    gvLayoutJobs(gvc, g);
>
>    /* Write the graph according to -T and -o options */
>    gvRenderJobs(gvc, g);
>
>    /* Free layout data */
>    gvFreeLayout(gvc, g);
>
>    /* Free graph structures */
>    agclose(g);
>
>    /* close output file, free context, and return number of errors */
>    return (gvFreeContext(gvc));
>}

/* $Id$ $Revision$ */
/* vim:set shiftwidth=4 ts=8: */

/*************************************************************************
 * 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
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: See CVS logs. Details at http://www.graphviz.org/
 *************************************************************************/

/* Note that, with the call to gvParseArgs(), this application assumes that
 * a known layout algorithm is going to be specified. This can be done either
 * using argv[0] or requiring the user to run this code with a -K flag specifying
 * which layout to use. In the former case, after this program has been built as
 * 'demo', you will need to rename it as one of the installed layout engines such
 * as dot, neato, sfdp, etc. 
 */
#include <gvc.h>

int main(int argc, char **argv)
{
    Agraph_t *g;
    Agnode_t *n, *m;
    Agedge_t *e;
    GVC_t *gvc;

    /* set up a graphviz context */
    gvc = gvContext();

    /* parse command line args - minimally argv[0] sets layout engine */
    gvParseArgs(gvc, argc, argv);

    /* Create a simple digraph */
    g = agopen("g", Agdirected, 0);
    n = agnode(g, "n", 1);
    m = agnode(g, "m", 1);
    e = agedge(g, n, m, 0, 1);

    /* Set an attribute - in this case one that affects the visible rendering */
    agsafeset(n, "color", "red", "");

    /* Compute a layout using layout engine from command line args */
    gvLayoutJobs(gvc, g);

    /* Write the graph according to -T and -o options */
    gvRenderJobs(gvc, g);

    /* Free layout data */
    gvFreeLayout(gvc, g);

    /* Free graph structures */
    agclose(g);

    /* close output file, free context, and return number of errors */
    return (gvFreeContext(gvc));
}

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Attachments on bug 28989: 12749 | 12750