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#include "command.hh"
#include "globals.hh"
#include "eval.hh"
#include "eval-inline.hh"
#include "eval-settings.hh"
#include "names.hh"
#include "get-drvs.hh"
#include "common-args.hh"
#include "shared.hh"
#include "eval-cache.hh"
#include "attr-path.hh"
#include "hilite.hh"
#include <regex>
#include <fstream>
#include <nlohmann/json.hpp>
using namespace nix;
using json = nlohmann::json;
std::string wrap(std::string prefix, std::string s)
{
return concatStrings(prefix, s, ANSI_NORMAL);
}
struct CmdSearch : InstallableCommand, MixJSON
{
std::vector<std::string> res;
std::vector<std::string> excludeRes;
CmdSearch()
{
expectArgs("regex", &res);
addFlag(Flag {
.longName = "exclude",
.shortName = 'e',
.description = "Hide packages whose attribute path, name or description contain *regex*.",
.labels = {"regex"},
.handler = {[this](std::string s) {
excludeRes.push_back(s);
}},
});
}
std::string description() override
{
return "search for packages";
}
std::string doc() override
{
return
#include "search.md"
;
}
Strings getDefaultFlakeAttrPaths() override
{
return {
"packages." + settings.thisSystem.get(),
"legacyPackages." + settings.thisSystem.get()
};
}
void run(ref<Store> store, ref<Installable> installable) override
{
auto const installableValue = InstallableValue::require(installable);
settings.readOnlyMode = true;
evalSettings.enableImportFromDerivation.setDefault(false);
// Recommend "^" here instead of ".*" due to differences in resulting highlighting
if (res.empty())
throw UsageError("Must provide at least one regex! To match all packages, use '%s'.", "nix search <installable> ^");
std::vector<std::regex> regexes;
std::vector<std::regex> excludeRegexes;
regexes.reserve(res.size());
excludeRegexes.reserve(excludeRes.size());
for (auto & re : res)
regexes.push_back(std::regex(re, std::regex::extended | std::regex::icase));
for (auto & re : excludeRes)
excludeRegexes.emplace_back(re, std::regex::extended | std::regex::icase);
auto state = getEvalState();
std::optional<nlohmann::json> jsonOut;
if (json) jsonOut = json::object();
uint64_t results = 0;
std::function<void(eval_cache::AttrCursor & cursor, const std::vector<Symbol> & attrPath, bool initialRecurse)> visit;
visit = [&](eval_cache::AttrCursor & cursor, const std::vector<Symbol> & attrPath, bool initialRecurse)
{
auto attrPathS = state->symbols.resolve(attrPath);
Activity act(*logger, lvlInfo, actUnknown,
fmt("evaluating '%s'", concatStringsSep(".", attrPathS)));
try {
auto recurse = [&]()
{
for (const auto & attr : cursor.getAttrs()) {
auto cursor2 = cursor.getAttr(state->symbols[attr]);
auto attrPath2(attrPath);
attrPath2.push_back(attr);
visit(*cursor2, attrPath2, false);
}
};
if (cursor.isDerivation()) {
DrvName name(cursor.getAttr(state->sName)->getString());
auto aMeta = cursor.maybeGetAttr(state->sMeta);
auto aDescription = aMeta ? aMeta->maybeGetAttr(state->sDescription) : nullptr;
auto description = aDescription ? aDescription->getString() : "";
std::replace(description.begin(), description.end(), '\n', ' ');
auto attrPath2 = concatStringsSep(".", attrPathS);
std::vector<std::smatch> attrPathMatches;
std::vector<std::smatch> descriptionMatches;
std::vector<std::smatch> nameMatches;
bool found = false;
for (auto & regex : excludeRegexes) {
if (
std::regex_search(attrPath2, regex)
|| std::regex_search(name.name, regex)
|| std::regex_search(description, regex))
return;
}
for (auto & regex : regexes) {
found = false;
auto addAll = [&found](std::sregex_iterator it, std::vector<std::smatch> & vec) {
const auto end = std::sregex_iterator();
while (it != end) {
vec.push_back(*it++);
found = true;
}
};
addAll(std::sregex_iterator(attrPath2.begin(), attrPath2.end(), regex), attrPathMatches);
addAll(std::sregex_iterator(name.name.begin(), name.name.end(), regex), nameMatches);
addAll(std::sregex_iterator(description.begin(), description.end(), regex), descriptionMatches);
if (!found)
break;
}
if (found)
{
results++;
if (json) {
(*jsonOut)[attrPath2] = {
{"pname", name.name},
{"version", name.version},
{"description", description},
};
} else {
auto name2 = hiliteMatches(name.name, nameMatches, ANSI_GREEN, "\e[0;2m");
if (results > 1) logger->cout("");
logger->cout(
"* %s%s",
wrap("\e[0;1m", hiliteMatches(attrPath2, attrPathMatches, ANSI_GREEN, "\e[0;1m")),
name.version != "" ? " (" + name.version + ")" : "");
if (description != "")
logger->cout(
" %s", hiliteMatches(description, descriptionMatches, ANSI_GREEN, ANSI_NORMAL));
}
}
}
else if (
attrPath.size() == 0
|| (attrPathS[0] == "legacyPackages" && attrPath.size() <= 2)
|| (attrPathS[0] == "packages" && attrPath.size() <= 2))
recurse();
else if (initialRecurse)
recurse();
else if (attrPathS[0] == "legacyPackages" && attrPath.size() > 2) {
auto attr = cursor.maybeGetAttr(state->sRecurseForDerivations);
if (attr && attr->getBool())
recurse();
}
} catch (EvalError & e) {
if (!(attrPath.size() > 0 && attrPathS[0] == "legacyPackages"))
throw;
}
};
for (auto & cursor : installableValue->getCursors(*state))
visit(*cursor, cursor->getAttrPath(), true);
if (json)
logger->cout("%s", *jsonOut);
if (!json && !results)
throw Error("no results for the given search term(s)!");
}
};
static auto rCmdSearch = registerCommand<CmdSearch>("search");
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