forked from lix-project/lix
101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
#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 << "\"";
|
|
for (auto & 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;
|
|
for (auto & j : *v.attrs)
|
|
names.insert(j.name);
|
|
for (auto & j : names) {
|
|
Attr & a(*v.attrs->find(state.symbols.create(j)));
|
|
json.attr(j);
|
|
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());
|
|
}
|
|
|
|
|
|
}
|