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#include "dotgraph.hh"
#include <iostream>
#include "store-api.hh"
#include "util.hh"
using std::cout;
namespace nix {
static string dotQuote(const string& s) { return "\"" + s + "\""; }
static string nextColour() {
static int n = 0;
static string colours[] = {"black", "red", "green",
"blue", "magenta", "burlywood"};
return colours[n++ % (sizeof(colours) / sizeof(string))];
}
static string makeEdge(const string& src, const string& dst) {
format f = format("%1% -> %2% [color = %3%];\n") % dotQuote(src) %
dotQuote(dst) % dotQuote(nextColour());
return f.str();
}
static string makeNode(const string& id, const string& label,
const string& colour) {
format f = format(
"%1% [label = %2%, shape = box, "
"style = filled, fillcolor = %3%];\n") %
dotQuote(id) % dotQuote(label) % dotQuote(colour);
return f.str();
}
static string symbolicName(const string& path) {
string p = baseNameOf(path);
return string(p, p.find('-') + 1);
}
#if 0
string pathLabel(const Path & nePath, const string & elemPath)
{
return (string) nePath + "-" + elemPath;
}
void printClosure(const Path & nePath, const StoreExpr & fs)
{
PathSet workList(fs.closure.roots);
PathSet doneSet;
for (PathSet::iterator i = workList.begin(); i != workList.end(); ++i) {
cout << makeEdge(pathLabel(nePath, *i), nePath);
}
while (!workList.empty()) {
Path path = *(workList.begin());
workList.erase(path);
if (doneSet.find(path) == doneSet.end()) {
doneSet.insert(path);
ClosureElems::const_iterator elem = fs.closure.elems.find(path);
if (elem == fs.closure.elems.end())
throw Error(format("bad closure, missing path '%1%'") % path);
for (StringSet::const_iterator i = elem->second.refs.begin();
i != elem->second.refs.end(); ++i)
{
workList.insert(*i);
cout << makeEdge(pathLabel(nePath, *i), pathLabel(nePath, path));
}
cout << makeNode(pathLabel(nePath, path),
symbolicName(path), "#ff0000");
}
}
}
#endif
void printDotGraph(ref<Store> store, const PathSet& roots) {
PathSet workList(roots);
PathSet doneSet;
cout << "digraph G {\n";
while (!workList.empty()) {
Path path = *(workList.begin());
workList.erase(path);
if (doneSet.find(path) != doneSet.end()) continue;
doneSet.insert(path);
cout << makeNode(path, symbolicName(path), "#ff0000");
for (auto& p : store->queryPathInfo(path)->references) {
if (p != path) {
workList.insert(p);
cout << makeEdge(p, path);
}
}
#if 0
StoreExpr ne = storeExprFromPath(path);
string label, colour;
if (ne.type == StoreExpr::neDerivation) {
for (PathSet::iterator i = ne.derivation.inputs.begin();
i != ne.derivation.inputs.end(); ++i)
{
workList.insert(*i);
cout << makeEdge(*i, path);
}
label = "derivation";
colour = "#00ff00";
for (StringPairs::iterator i = ne.derivation.env.begin();
i != ne.derivation.env.end(); ++i)
if (i->first == "name") label = i->second;
}
else if (ne.type == StoreExpr::neClosure) {
label = "<closure>";
colour = "#00ffff";
printClosure(path, ne);
}
else abort();
cout << makeNode(path, label, colour);
#endif
}
cout << "}\n";
}
} // namespace nix
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