110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
/*
|
|
* gvz.c
|
|
* Copyright (C) 2014 c9s <c9s@c9smba.local>
|
|
*
|
|
* Distributed under terms of the MIT license.
|
|
*/
|
|
|
|
#include <gvc.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "r3.h"
|
|
#include "zmalloc.h"
|
|
|
|
void r3_tree_build_ag_nodes(Agraph_t * g, Agnode_t * ag_parent_node, const node * n, int node_cnt) {
|
|
edge * e;
|
|
Agnode_t *agn_child;
|
|
Agedge_t *agn_edge;
|
|
|
|
for ( int i = 0 ; i < n->edge_len ; i++ ) {
|
|
e = n->edges[i];
|
|
|
|
node_cnt++;
|
|
|
|
char *nodename = NULL;
|
|
if ( e && e->child && e->child->combined_pattern ) {
|
|
asprintf(&nodename,"%s", e->child->combined_pattern);
|
|
} else {
|
|
asprintf(&nodename,"#%d", node_cnt);
|
|
}
|
|
|
|
agn_child = agnode(g, nodename, 1);
|
|
agn_edge = agedge(g, ag_parent_node, agn_child, 0, 1);
|
|
agsafeset(agn_edge, "label", e->pattern, "");
|
|
if (e->child && e->child->endpoint) {
|
|
agsafeset(agn_child, "shape", "doublecircle", "");
|
|
}
|
|
r3_tree_build_ag_nodes(g, agn_child, e->child, node_cnt);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Render a tree to tree graph image via graphviz (dot)
|
|
*/
|
|
int r3_tree_render(const node * tree, const char *layout, const char * format, FILE *fp)
|
|
{
|
|
Agraph_t *g;
|
|
/* set up a graphviz context - but only once even for multiple graphs */
|
|
GVC_t *gvc = NULL;
|
|
gvc = gvContext();
|
|
/* Create a simple digraph */
|
|
g = agopen("g", Agdirected, 0);
|
|
|
|
// create self node
|
|
Agnode_t *ag_root = agnode(g, "{root}", 1);
|
|
r3_tree_build_ag_nodes(g, ag_root, tree, 0);
|
|
gvLayout(gvc, g, layout);
|
|
gvRender(gvc, g, format, fp);
|
|
gvFreeLayout(gvc, g);
|
|
agclose(g);
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Render a tree to tree graph image via graphviz (dot)
|
|
*/
|
|
int r3_tree_render_dot(const node * tree, const char *layout, FILE *fp)
|
|
{
|
|
return r3_tree_render(tree, layout, "dot", fp);
|
|
}
|
|
|
|
|
|
/**
|
|
* Render a tree to tree graph image via graphviz (dot)
|
|
*/
|
|
int r3_tree_render_file(const node * tree, const char * format, const char * filename)
|
|
{
|
|
Agraph_t *g;
|
|
|
|
GVC_t *gvc = NULL;
|
|
gvc = gvContext();
|
|
/*
|
|
// set up a graphviz context - but only once even for multiple graphs
|
|
static GVC_t *gvc;
|
|
if (!gvc) {
|
|
gvc = gvContext();
|
|
}
|
|
*/
|
|
|
|
/* Create a simple digraph */
|
|
g = agopen("g", Agdirected, 0);
|
|
|
|
// create self node
|
|
Agnode_t *ag_root = agnode(g, "{root}", 1);
|
|
r3_tree_build_ag_nodes(g, ag_root, tree, 0);
|
|
|
|
gvLayout(gvc, g, "dot");
|
|
gvRenderFilename(gvc, g, format, filename);
|
|
gvFreeLayout(gvc, g);
|
|
|
|
agclose(g);
|
|
return 0;
|
|
}
|
|
|