gv_tcl_init.c

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/* $Id$ $Revision$ */
/* 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/
 *************************************************************************/

#include <tcl.h>
#include "gvc.h"
#include "gvplugin.h"
#include "gvcjob.h"
#include "gvcint.h"

static size_t gv_string_writer(GVJ_t *job, const char *s, size_t len)
{
    Tcl_AppendToObj((Tcl_Obj*)(job->output_file), s, len);
    return len;
}

static size_t gv_channel_writer(GVJ_t *job, const char *s, size_t len)
{
    return Tcl_Write((Tcl_Channel)(job->output_file), s, len);
}

void gv_string_writer_init(GVC_t *gvc)
{
    gvc->write_fn = gv_string_writer;
}

void gv_channel_writer_init(GVC_t *gvc)
{
    gvc->write_fn = gv_channel_writer;
}

void gv_writer_reset (GVC_t *gvc) {gvc->write_fn = NULL;}