include "gv.php";
# display the kernel module dependencies
# author: John Ellson <*****@*****.**>
$G = gv::digraph("G");
$N = gv::protonode($G);
$E = gv::protoedge($G);
gv::setv($G, "rankdir", "LR");
gv::setv($G, "nodesep", "0.05");
gv::setv($N, "shape", "box");
gv::setv($N, "width", "0");
gv::setv($N, "height", "0");
gv::setv($N, "margin", ".03");
gv::setv($N, "fontsize", "8");
gv::setv($N, "fontname", "helvetica");
gv::setv($E, "arrowsize", ".4");
if ($f = fopen("/proc/modules", "r")) {
while ($rec = fgets($f)) {
$matches = preg_split("/[\\s]+/", $rec, -1, PREG_SPLIT_NO_EMPTY);
$n = gv::node($G, $matches[0]);
$usedbylist = preg_split("/[,]/", $matches[3], -1, PREG_SPLIT_NO_EMPTY);
foreach ($usedbylist as $i => $usedby) {
if ($usedby != "-") {
gv::edge($n, gv::node($G, $usedby));
}
}
}
}
fclose($f);
gv::layout($G, "dot");
gv::render($G, "xlib");
print "\n";
print gv::getv($g, "aaa");
print "\n";
$n = gv::node($g, "hello");
print gv::getv($n, "label");
print "\n";
print gv::setv($n, "aaa", "xxx");
print "\n";
print gv::getv($n, "aaa");
print "\n";
$m = gv::node($g, "world");
print gv::getv($m, "aaa");
print "\n";
$e = gv::edge($n, $m);
print gv::setv($e, "aaa", "xxx");
print "\n";
print gv::getv($e, "aaa");
print "\n";
gv::rm($e);
gv::rm($n);
gv::rm($m);
gv::rm($g);
$g = gv::readstring("digraph G {a->b}");
gv::layout($g, "dot");
gv::render($g, "png", "ab.png");
gv::rm($g);
$g = gv::read("hello.gv");
gv::layout($g, "dot");
gv::render($g, "png", "hello.png");
gv::rm($g);
