nix --help: Group commands
This commit is contained in:
parent
a721a0b114
commit
f132d82a79
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@ -1,13 +1,15 @@
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#pragma once
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#pragma once
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namespace nix {
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/* Some ANSI escape sequences. */
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#define ANSI_NORMAL "\e[0m"
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#define ANSI_BOLD "\e[1m"
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#define ANSI_FAINT "\e[2m"
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#define ANSI_ITALIC "\e[3m"
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#define ANSI_RED "\e[31;1m"
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#define ANSI_GREEN "\e[32;1m"
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#define ANSI_YELLOW "\e[33;1m"
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#define ANSI_BLUE "\e[34;1m"
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namespace nix
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{
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/* Some ANSI escape sequences. */
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#define ANSI_NORMAL "\e[0m"
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#define ANSI_BOLD "\e[1m"
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#define ANSI_FAINT "\e[2m"
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#define ANSI_RED "\e[31;1m"
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#define ANSI_GREEN "\e[32;1m"
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#define ANSI_YELLOW "\e[33;1m"
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#define ANSI_BLUE "\e[34;1m"
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}
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}
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@ -59,7 +59,7 @@ void Args::parseCmdline(const Strings & _cmdline)
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void Args::printHelp(const string & programName, std::ostream & out)
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void Args::printHelp(const string & programName, std::ostream & out)
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{
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{
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std::cout << "Usage: " << programName << " <FLAGS>...";
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std::cout << fmt(ANSI_BOLD "Usage:" ANSI_NORMAL " %s " ANSI_ITALIC "FLAGS..." ANSI_NORMAL, programName);
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for (auto & exp : expectedArgs) {
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for (auto & exp : expectedArgs) {
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std::cout << renderLabels({exp.label});
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std::cout << renderLabels({exp.label});
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// FIXME: handle arity > 1
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// FIXME: handle arity > 1
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@ -70,11 +70,11 @@ void Args::printHelp(const string & programName, std::ostream & out)
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auto s = description();
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auto s = description();
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if (s != "")
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if (s != "")
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std::cout << "\nSummary: " << s << ".\n";
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std::cout << "\n" ANSI_BOLD "Summary:" ANSI_NORMAL " " << s << ".\n";
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if (longFlags.size()) {
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if (longFlags.size()) {
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std::cout << "\n";
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std::cout << "\n";
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std::cout << "Flags:\n";
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std::cout << ANSI_BOLD "Flags:" ANSI_NORMAL "\n";
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printFlags(out);
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printFlags(out);
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}
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}
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}
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}
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@ -181,7 +181,7 @@ std::string renderLabels(const Strings & labels)
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std::string res;
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std::string res;
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for (auto label : labels) {
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for (auto label : labels) {
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for (auto & c : label) c = std::toupper(c);
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for (auto & c : label) c = std::toupper(c);
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res += " <" + label + ">";
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res += " " ANSI_ITALIC + label + ANSI_NORMAL;
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}
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}
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return res;
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return res;
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}
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}
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@ -190,10 +190,10 @@ void printTable(std::ostream & out, const Table2 & table)
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{
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{
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size_t max = 0;
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size_t max = 0;
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for (auto & row : table)
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for (auto & row : table)
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max = std::max(max, row.first.size());
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max = std::max(max, filterANSIEscapes(row.first, true).size());
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for (auto & row : table) {
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for (auto & row : table) {
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out << " " << row.first
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out << " " << row.first
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<< std::string(max - row.first.size() + 2, ' ')
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<< std::string(max - filterANSIEscapes(row.first, true).size() + 2, ' ')
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<< row.second << "\n";
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<< row.second << "\n";
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}
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}
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}
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}
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@ -204,8 +204,7 @@ void Command::printHelp(const string & programName, std::ostream & out)
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auto exs = examples();
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auto exs = examples();
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if (!exs.empty()) {
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if (!exs.empty()) {
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out << "\n";
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out << "\n" ANSI_BOLD "Examples:" ANSI_NORMAL "\n";
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out << "Examples:\n";
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for (auto & ex : exs)
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for (auto & ex : exs)
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out << "\n"
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out << "\n"
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<< " " << ex.description << "\n" // FIXME: wrap
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<< " " << ex.description << "\n" // FIXME: wrap
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@ -221,49 +220,55 @@ MultiCommand::MultiCommand(const Commands & commands)
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auto i = commands.find(ss[0]);
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auto i = commands.find(ss[0]);
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if (i == commands.end())
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if (i == commands.end())
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throw UsageError("'%s' is not a recognised command", ss[0]);
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throw UsageError("'%s' is not a recognised command", ss[0]);
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command = i->second();
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command = {ss[0], i->second()};
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command->_name = ss[0];
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}});
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}});
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categories[Command::catDefault] = "Available commands";
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}
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}
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void MultiCommand::printHelp(const string & programName, std::ostream & out)
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void MultiCommand::printHelp(const string & programName, std::ostream & out)
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{
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{
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if (command) {
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if (command) {
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command->printHelp(programName + " " + command->name(), out);
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command->second->printHelp(programName + " " + command->first, out);
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return;
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return;
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}
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}
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out << "Usage: " << programName << " <COMMAND> <FLAGS>... <ARGS>...\n";
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out << fmt(ANSI_BOLD "Usage:" ANSI_NORMAL " %s " ANSI_ITALIC "COMMAND FLAGS... ARGS..." ANSI_NORMAL "\n", programName);
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out << "\n";
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out << "\n" ANSI_BOLD "Common flags:" ANSI_NORMAL "\n";
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out << "Common flags:\n";
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printFlags(out);
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printFlags(out);
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out << "\n";
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std::map<Command::Category, std::map<std::string, ref<Command>>> commandsByCategory;
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out << "Available commands:\n";
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Table2 table;
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for (auto & [name, commandFun] : commands) {
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for (auto & i : commands) {
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auto command = commandFun();
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auto command = i.second();
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commandsByCategory[command->category()].insert_or_assign(name, command);
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command->_name = i.first;
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}
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auto descr = command->description();
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if (!descr.empty())
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for (auto & [category, commands] : commandsByCategory) {
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table.push_back(std::make_pair(command->name(), descr));
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out << fmt("\n" ANSI_BOLD "%s:" ANSI_NORMAL "\n", categories[category]);
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Table2 table;
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for (auto & [name, command] : commands) {
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auto descr = command->description();
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if (!descr.empty())
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table.push_back(std::make_pair(name, descr));
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}
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printTable(out, table);
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}
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}
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printTable(out, table);
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}
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}
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bool MultiCommand::processFlag(Strings::iterator & pos, Strings::iterator end)
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bool MultiCommand::processFlag(Strings::iterator & pos, Strings::iterator end)
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{
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{
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if (Args::processFlag(pos, end)) return true;
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if (Args::processFlag(pos, end)) return true;
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if (command && command->processFlag(pos, end)) return true;
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if (command && command->second->processFlag(pos, end)) return true;
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return false;
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return false;
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}
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}
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bool MultiCommand::processArgs(const Strings & args, bool finish)
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bool MultiCommand::processArgs(const Strings & args, bool finish)
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{
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{
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if (command)
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if (command)
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return command->processArgs(args, finish);
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return command->second->processArgs(args, finish);
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else
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else
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return Args::processArgs(args, finish);
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return Args::processArgs(args, finish);
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}
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}
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@ -197,17 +197,10 @@ public:
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run() method. */
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run() method. */
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struct Command : virtual Args
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struct Command : virtual Args
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{
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{
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private:
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std::string _name;
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friend class MultiCommand;
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friend class MultiCommand;
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public:
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virtual ~Command() { }
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virtual ~Command() { }
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std::string name() { return _name; }
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virtual void prepare() { };
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virtual void prepare() { };
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virtual void run() = 0;
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virtual void run() = 0;
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virtual Examples examples() { return Examples(); }
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virtual Examples examples() { return Examples(); }
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typedef int Category;
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static constexpr Category catDefault = 0;
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virtual Category category() { return catDefault; }
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void printHelp(const string & programName, std::ostream & out) override;
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void printHelp(const string & programName, std::ostream & out) override;
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};
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};
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@ -233,7 +232,10 @@ class MultiCommand : virtual Args
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public:
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public:
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Commands commands;
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Commands commands;
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std::shared_ptr<Command> command;
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std::map<Command::Category, std::string> categories;
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// Selected command, if any.
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std::optional<std::pair<std::string, ref<Command>>> command;
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MultiCommand(const Commands & commands);
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MultiCommand(const Commands & commands);
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};
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};
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}
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}
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Category category() override { return catUtility; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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if (!namePart) namePart = baseNameOf(path);
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if (!namePart) namePart = baseNameOf(path);
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@ -30,9 +30,11 @@ struct CmdCatStore : StoreCommand, MixCat
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std::string description() override
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std::string description() override
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{
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{
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return "print the contents of a store file on stdout";
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return "print the contents of a file in the Nix store on stdout";
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}
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}
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Category category() override { return catUtility; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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cat(store->getFSAccessor());
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cat(store->getFSAccessor());
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@ -51,9 +53,11 @@ struct CmdCatNar : StoreCommand, MixCat
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std::string description() override
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std::string description() override
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{
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{
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return "print the contents of a file inside a NAR file";
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return "print the contents of a file inside a NAR file on stdout";
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}
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}
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Category category() override { return catUtility; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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cat(makeNarAccessor(make_ref<std::string>(readFile(narPath))));
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cat(makeNarAccessor(make_ref<std::string>(readFile(narPath))));
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@ -10,6 +10,10 @@ namespace nix {
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extern std::string programPath;
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extern std::string programPath;
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static constexpr Command::Category catSecondary = 100;
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static constexpr Command::Category catUtility = 101;
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static constexpr Command::Category catNixInstallation = 102;
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/* A command that requires a Nix store. */
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/* A command that requires a Nix store. */
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struct StoreCommand : virtual Command
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struct StoreCommand : virtual Command
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{
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{
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@ -80,6 +80,8 @@ struct CmdCopy : StorePathsCommand
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};
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};
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}
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}
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Category category() override { return catSecondary; }
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ref<Store> createStore() override
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ref<Store> createStore() override
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{
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{
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return srcUri.empty() ? StoreCommand::createStore() : openStore(srcUri);
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return srcUri.empty() ? StoreCommand::createStore() : openStore(srcUri);
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@ -328,6 +328,8 @@ struct CmdPrintDevEnv : Common
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};
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};
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}
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}
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Category category() override { return catUtility; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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auto buildEnvironment = getBuildEnvironment(store).first;
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auto buildEnvironment = getBuildEnvironment(store).first;
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@ -43,6 +43,8 @@ struct CmdDoctor : StoreCommand
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return "check your system for potential problems and print a PASS or FAIL for each check.";
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return "check your system for potential problems and print a PASS or FAIL for each check.";
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}
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}
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Category category() override { return catNixInstallation; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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logger->log("Running checks against store uri: " + store->getUri());
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logger->log("Running checks against store uri: " + store->getUri());
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@ -20,6 +20,8 @@ struct CmdDumpPath : StorePathCommand
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};
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};
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}
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}
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Category category() override { return catUtility; }
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void run(ref<Store> store, const StorePath & storePath) override
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void run(ref<Store> store, const StorePath & storePath) override
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{
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{
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FdSink sink(STDOUT_FILENO);
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FdSink sink(STDOUT_FILENO);
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@ -25,6 +25,8 @@ struct CmdEdit : InstallableCommand
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};
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};
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}
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}
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Category category() override { return catSecondary; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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auto state = getEvalState();
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auto state = getEvalState();
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@ -45,6 +45,8 @@ struct CmdEval : MixJSON, InstallableCommand
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};
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};
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}
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}
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Category category() override { return catSecondary; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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if (raw && json)
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if (raw && json)
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@ -41,6 +41,8 @@ struct CmdHash : Command
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: "print cryptographic hash of the NAR serialisation of a path";
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: "print cryptographic hash of the NAR serialisation of a path";
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}
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}
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Category category() override { return catUtility; }
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void run() override
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void run() override
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{
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{
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for (auto path : paths) {
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for (auto path : paths) {
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@ -87,6 +89,8 @@ struct CmdToBase : Command
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"SRI");
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"SRI");
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}
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}
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Category category() override { return catUtility; }
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void run() override
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void run() override
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{
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{
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for (auto s : args)
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for (auto s : args)
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@ -31,6 +31,8 @@ struct CmdLog : InstallableCommand
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};
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};
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}
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}
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Category category() override { return catSecondary; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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settings.readOnlyMode = true;
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settings.readOnlyMode = true;
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@ -100,9 +100,11 @@ struct CmdLsStore : StoreCommand, MixLs
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std::string description() override
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std::string description() override
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{
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{
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return "show information about a store path";
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return "show information about a path in the Nix store";
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}
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}
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Category category() override { return catUtility; }
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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list(store->getFSAccessor());
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list(store->getFSAccessor());
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@ -131,9 +133,11 @@ struct CmdLsNar : Command, MixLs
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std::string description() override
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std::string description() override
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{
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{
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return "show information about the contents of a NAR file";
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return "show information about a path inside a NAR file";
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}
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}
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Category category() override { return catUtility; }
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void run() override
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void run() override
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{
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{
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list(makeNarAccessor(make_ref<std::string>(readFile(narPath, true))));
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list(makeNarAccessor(make_ref<std::string>(readFile(narPath, true))));
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|
|
@ -59,6 +59,12 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
|
||||||
|
|
||||||
NixArgs() : MultiCommand(*RegisterCommand::commands), MixCommonArgs("nix")
|
NixArgs() : MultiCommand(*RegisterCommand::commands), MixCommonArgs("nix")
|
||||||
{
|
{
|
||||||
|
categories.clear();
|
||||||
|
categories[Command::catDefault] = "Main commands";
|
||||||
|
categories[catSecondary] = "Infrequently used commands";
|
||||||
|
categories[catUtility] = "Utility/scripting commands";
|
||||||
|
categories[catNixInstallation] = "Commands for upgrading or troubleshooting your Nix installation";
|
||||||
|
|
||||||
addFlag({
|
addFlag({
|
||||||
.longName = "help",
|
.longName = "help",
|
||||||
.description = "show usage information",
|
.description = "show usage information",
|
||||||
|
@ -111,8 +117,8 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
|
||||||
Args::printFlags(out);
|
Args::printFlags(out);
|
||||||
std::cout <<
|
std::cout <<
|
||||||
"\n"
|
"\n"
|
||||||
"In addition, most configuration settings can be overriden using '--<name> <value>'.\n"
|
"In addition, most configuration settings can be overriden using '--" ANSI_ITALIC "name value" ANSI_NORMAL "'.\n"
|
||||||
"Boolean settings can be overriden using '--<name>' or '--no-<name>'. See 'nix\n"
|
"Boolean settings can be overriden using '--" ANSI_ITALIC "name" ANSI_NORMAL "' or '--no-" ANSI_ITALIC "name" ANSI_NORMAL "'. See 'nix\n"
|
||||||
"--help-config' for a list of configuration settings.\n";
|
"--help-config' for a list of configuration settings.\n";
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -121,10 +127,10 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
|
||||||
MultiCommand::printHelp(programName, out);
|
MultiCommand::printHelp(programName, out);
|
||||||
|
|
||||||
#if 0
|
#if 0
|
||||||
out << "\nFor full documentation, run 'man " << programName << "' or 'man " << programName << "-<COMMAND>'.\n";
|
out << "\nFor full documentation, run 'man " << programName << "' or 'man " << programName << "-" ANSI_ITALIC "COMMAND" ANSI_NORMAL "'.\n";
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
std::cout << "\nNote: this program is EXPERIMENTAL and subject to change.\n";
|
std::cout << "\nNote: this program is " ANSI_RED "EXPERIMENTAL" ANSI_NORMAL " and subject to change.\n";
|
||||||
}
|
}
|
||||||
|
|
||||||
void showHelpAndExit()
|
void showHelpAndExit()
|
||||||
|
@ -191,8 +197,8 @@ void mainWrapped(int argc, char * * argv)
|
||||||
if (args.refresh)
|
if (args.refresh)
|
||||||
settings.tarballTtl = 0;
|
settings.tarballTtl = 0;
|
||||||
|
|
||||||
args.command->prepare();
|
args.command->second->prepare();
|
||||||
args.command->run();
|
args.command->second->run();
|
||||||
}
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
|
@ -31,6 +31,9 @@ struct CmdMakeContentAddressable : StorePathsCommand, MixJSON
|
||||||
},
|
},
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catUtility; }
|
||||||
|
|
||||||
void run(ref<Store> store, StorePaths storePaths) override
|
void run(ref<Store> store, StorePaths storePaths) override
|
||||||
{
|
{
|
||||||
auto paths = store->topoSortPaths(storePathsToSet(storePaths));
|
auto paths = store->topoSortPaths(storePathsToSet(storePaths));
|
||||||
|
|
|
@ -23,6 +23,8 @@ struct CmdOptimiseStore : StoreCommand
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catUtility; }
|
||||||
|
|
||||||
void run(ref<Store> store) override
|
void run(ref<Store> store) override
|
||||||
{
|
{
|
||||||
store->optimiseStore();
|
store->optimiseStore();
|
||||||
|
|
|
@ -29,6 +29,8 @@ struct CmdPathInfo : StorePathsCommand, MixJSON
|
||||||
return "query information about store paths";
|
return "query information about store paths";
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catSecondary; }
|
||||||
|
|
||||||
Examples examples() override
|
Examples examples() override
|
||||||
{
|
{
|
||||||
return {
|
return {
|
||||||
|
|
|
@ -21,6 +21,8 @@ struct CmdPingStore : StoreCommand
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catUtility; }
|
||||||
|
|
||||||
void run(ref<Store> store) override
|
void run(ref<Store> store) override
|
||||||
{
|
{
|
||||||
store->connect();
|
store->connect();
|
||||||
|
|
|
@ -13,6 +13,8 @@ struct CmdShowConfig : Command, MixJSON
|
||||||
return "show the Nix configuration";
|
return "show the Nix configuration";
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catUtility; }
|
||||||
|
|
||||||
void run() override
|
void run() override
|
||||||
{
|
{
|
||||||
if (json) {
|
if (json) {
|
||||||
|
|
|
@ -42,6 +42,8 @@ struct CmdShowDerivation : InstallablesCommand
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catUtility; }
|
||||||
|
|
||||||
void run(ref<Store> store) override
|
void run(ref<Store> store) override
|
||||||
{
|
{
|
||||||
auto drvPaths = toDerivations(store, installables, true);
|
auto drvPaths = toDerivations(store, installables, true);
|
||||||
|
|
|
@ -27,6 +27,8 @@ struct CmdCopySigs : StorePathsCommand
|
||||||
return "copy path signatures from substituters (like binary caches)";
|
return "copy path signatures from substituters (like binary caches)";
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catUtility; }
|
||||||
|
|
||||||
void run(ref<Store> store, StorePaths storePaths) override
|
void run(ref<Store> store, StorePaths storePaths) override
|
||||||
{
|
{
|
||||||
if (substituterUris.empty())
|
if (substituterUris.empty())
|
||||||
|
@ -112,6 +114,8 @@ struct CmdSignPaths : StorePathsCommand
|
||||||
return "sign the specified paths";
|
return "sign the specified paths";
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catUtility; }
|
||||||
|
|
||||||
void run(ref<Store> store, StorePaths storePaths) override
|
void run(ref<Store> store, StorePaths storePaths) override
|
||||||
{
|
{
|
||||||
if (secretKeyFile.empty())
|
if (secretKeyFile.empty())
|
||||||
|
|
|
@ -51,6 +51,8 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catNixInstallation; }
|
||||||
|
|
||||||
void run(ref<Store> store) override
|
void run(ref<Store> store) override
|
||||||
{
|
{
|
||||||
evalSettings.pureEval = true;
|
evalSettings.pureEval = true;
|
||||||
|
|
|
@ -49,6 +49,8 @@ struct CmdVerify : StorePathsCommand
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catSecondary; }
|
||||||
|
|
||||||
void run(ref<Store> store, StorePaths storePaths) override
|
void run(ref<Store> store, StorePaths storePaths) override
|
||||||
{
|
{
|
||||||
std::vector<ref<Store>> substituters;
|
std::vector<ref<Store>> substituters;
|
||||||
|
|
|
@ -68,6 +68,8 @@ struct CmdWhyDepends : SourceExprCommand
|
||||||
};
|
};
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Category category() override { return catSecondary; }
|
||||||
|
|
||||||
void run(ref<Store> store) override
|
void run(ref<Store> store) override
|
||||||
{
|
{
|
||||||
auto package = parseInstallable(*this, store, _package, false);
|
auto package = parseInstallable(*this, store, _package, false);
|
||||||
|
|
Loading…
Reference in a new issue