1 /* $Id$ $Revision$ */
2 /* vim:set shiftwidth=4 ts=8: */
3
4 /*************************************************************************
5 * Copyright (c) 2011 AT&T Intellectual Property
6 * All rights reserved. This program and the accompanying materials
7 * are made available under the terms of the Eclipse Public License v1.0
8 * which accompanies this distribution, and is available at
9 * http://www.eclipse.org/legal/epl-v10.html
10 *
11 * Contributors: See CVS logs. Details at http://www.graphviz.org/
12 *************************************************************************/
13
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include "gvc.h"
17 #include "gvplugin.h"
18 #include "gvcjob.h"
19 #include "gvcint.h"
20
21 typedef struct {
22 char* data;
23 int sz; /* buffer size */
24 int len; /* length of array */
25 } BA;
26
gv_string_writer(GVJ_t * job,const char * s,size_t len)27 static size_t gv_string_writer(GVJ_t *job, const char *s, size_t len)
28 {
29 BA* bap = (BA*)(job->output_file);
30 /* fprintf (stderr, "newlen %ld data %p sz %d len %d\n", len, bap->data,bap->sz, bap->len); */
31 int newlen = bap->len + len;
32 if (newlen > bap->sz) {
33 bap->sz *= 2;
34 if (newlen > bap->sz)
35 bap->sz = 2*newlen;
36 bap->data = (char*)realloc(bap->data, bap->sz);
37 }
38 memcpy (bap->data+bap->len, s, len);
39 bap->len = newlen;
40 return len;
41 }
42
gv_string_writer_init(GVC_t * gvc)43 void gv_string_writer_init(GVC_t *gvc)
44 {
45 gvc->write_fn = gv_string_writer;
46 }
47
gv_channel_writer(GVJ_t * job,const char * s,size_t len)48 static size_t gv_channel_writer(GVJ_t *job, const char *s, size_t len)
49 {
50 return len;
51 }
52
gv_channel_writer_init(GVC_t * gvc)53 void gv_channel_writer_init(GVC_t *gvc)
54 {
55 gvc->write_fn = gv_channel_writer;
56 }
57
gv_writer_reset(GVC_t * gvc)58 void gv_writer_reset (GVC_t *gvc) {gvc->write_fn = NULL;}
59