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#include "command.hh"
#include "globals.hh"
#include "eval.hh"
#include "eval-inline.hh"
#include "names.hh"
#include "get-drvs.hh"
#include "common-args.hh"
#include "json.hh"
#include <regex>
using namespace nix;
std::string hilite(const std::string & s, const std::smatch & m)
{
return
m.empty()
? s
: std::string(m.prefix())
+ ANSI_RED + std::string(m.str()) + ANSI_NORMAL
+ std::string(m.suffix());
}
struct CmdSearch : SourceExprCommand, MixJSON
{
std::string re;
CmdSearch()
{
expectArg("regex", &re, true);
}
std::string name() override
{
return "search";
}
std::string description() override
{
return "query available packages";
}
void run(ref<Store> store) override
{
settings.readOnlyMode = true;
std::regex regex(re, std::regex::extended | std::regex::icase);
auto state = getEvalState();
std::function<void(Value *, std::string, bool)> doExpr;
bool first = true;
auto jsonOut = json ? std::make_unique<JSONObject>(std::cout, true) : nullptr;
auto sToplevel = state->symbols.create("_toplevel");
doExpr = [&](Value * v, std::string attrPath, bool toplevel) {
debug("at attribute ‘%s’", attrPath);
try {
state->forceValue(*v);
if (v->type == tLambda && toplevel) {
Value * v2 = state->allocValue();
state->autoCallFunction(*state->allocBindings(1), *v, *v2);
v = v2;
state->forceValue(*v);
}
if (state->isDerivation(*v)) {
DrvInfo drv(*state, attrPath, v->attrs);
DrvName parsed(drv.queryName());
std::smatch attrPathMatch;
std::regex_search(attrPath, attrPathMatch, regex);
auto name = parsed.name;
std::smatch nameMatch;
std::regex_search(name, nameMatch, regex);
std::string description = drv.queryMetaString("description");
std::replace(description.begin(), description.end(), '\n', ' ');
std::smatch descriptionMatch;
std::regex_search(description, descriptionMatch, regex);
if (!attrPathMatch.empty()
|| !nameMatch.empty()
|| !descriptionMatch.empty())
{
if (json) {
auto jsonElem = jsonOut->object(attrPath);
jsonElem.attr("pkgName", parsed.name);
jsonElem.attr("version", parsed.version);
jsonElem.attr("description", description);
} else {
if (!first) std::cout << "\n";
first = false;
std::cout << fmt(
"Attribute name: %s\n"
"Package name: %s\n"
"Version: %s\n"
"Description: %s\n",
hilite(attrPath, attrPathMatch),
hilite(name, nameMatch),
parsed.version,
hilite(description, descriptionMatch));
}
}
}
else if (v->type == tAttrs) {
if (!toplevel) {
auto attrs = v->attrs;
Bindings::iterator j = attrs->find(state->symbols.create("recurseForDerivations"));
if (j == attrs->end() || !state->forceBool(*j->value, *j->pos)) return;
}
Bindings::iterator j = v->attrs->find(sToplevel);
bool toplevel2 = j != v->attrs->end() && state->forceBool(*j->value, *j->pos);
for (auto & i : *v->attrs) {
doExpr(i.value,
attrPath == "" ? (std::string) i.name : attrPath + "." + (std::string) i.name,
toplevel2);
}
}
} catch (AssertionError & e) {
} catch (Error & e) {
if (!toplevel) {
e.addPrefix(fmt("While evaluating the attribute ‘%s’:\n", attrPath));
throw;
}
}
};
doExpr(getSourceExpr(*state), "", true);
}
};
static RegisterCommand r1(make_ref<CmdSearch>());
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