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#include "value-to-json.hh"
#include "eval-inline.hh"
#include "util.hh"
#include <cstdlib>
#include <iomanip>
namespace nix {
void escapeJSON(std::ostream & str, const string & s)
{
str << "\"";
foreach (string::const_iterator, i, s)
if (*i == '\"' || *i == '\\') str << "\\" << *i;
else if (*i == '\n') str << "\\n";
else if (*i == '\r') str << "\\r";
else if (*i == '\t') str << "\\t";
else if (*i >= 0 && *i < 32)
str << "\\u" << std::setfill('0') << std::setw(4) << std::hex << (uint16_t) *i << std::dec;
else str << *i;
str << "\"";
}
void printValueAsJSON(EvalState & state, bool strict,
Value & v, std::ostream & str, PathSet & context)
{
checkInterrupt();
if (strict) state.forceValue(v);
switch (v.type) {
case tInt:
str << v.integer;
break;
case tBool:
str << (v.boolean ? "true" : "false");
break;
case tString:
copyContext(v, context);
escapeJSON(str, v.string.s);
break;
case tPath:
escapeJSON(str, state.copyPathToStore(context, v.path));
break;
case tNull:
str << "null";
break;
case tAttrs: {
Bindings::iterator i = v.attrs->find(state.sOutPath);
if (i == v.attrs->end()) {
JSONObject json(str);
StringSet names;
foreach (Bindings::iterator, i, *v.attrs)
names.insert(i->name);
foreach (StringSet::iterator, i, names) {
Attr & a(*v.attrs->find(state.symbols.create(*i)));
json.attr(*i);
printValueAsJSON(state, strict, *a.value, str, context);
}
} else
printValueAsJSON(state, strict, *i->value, str, context);
break;
}
case tList: {
JSONList json(str);
for (unsigned int n = 0; n < v.list.length; ++n) {
json.elem();
printValueAsJSON(state, strict, *v.list.elems[n], str, context);
}
break;
}
case tExternal:
v.external->printValueAsJSON(state, strict, str, context);
break;
default:
throw TypeError(format("cannot convert %1% to JSON") % showType(v));
}
}
void ExternalValueBase::printValueAsJSON(EvalState & state, bool strict,
std::ostream & str, PathSet & context) const
{
throw TypeError(format("cannot convert %1% to JSON") % showType());
}
}
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