mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-26 15:56:18 +02:00
nix --help: Show usage examples
This commit is contained in:
parent
1b0088ebb2
commit
69e3ffb076
3 changed files with 41 additions and 0 deletions
|
@ -5,6 +5,21 @@ namespace nix {
|
|||
|
||||
Commands * RegisterCommand::commands = 0;
|
||||
|
||||
void Command::printHelp(const string & programName, std::ostream & out)
|
||||
{
|
||||
Args::printHelp(programName, out);
|
||||
|
||||
auto exs = examples();
|
||||
if (!exs.empty()) {
|
||||
out << "\n";
|
||||
out << "Examples:\n";
|
||||
for (auto & ex : exs)
|
||||
out << "\n"
|
||||
<< " " << ex.description << "\n" // FIXME: wrap
|
||||
<< " $ " << ex.command << "\n";
|
||||
}
|
||||
}
|
||||
|
||||
MultiCommand::MultiCommand(const Commands & _commands)
|
||||
: commands(_commands)
|
||||
{
|
||||
|
|
|
@ -11,6 +11,18 @@ struct Command : virtual Args
|
|||
virtual std::string name() = 0;
|
||||
virtual void prepare() { };
|
||||
virtual void run() = 0;
|
||||
|
||||
struct Example
|
||||
{
|
||||
std::string description;
|
||||
std::string command;
|
||||
};
|
||||
|
||||
typedef std::list<Example> Examples;
|
||||
|
||||
virtual Examples examples() { return Examples(); }
|
||||
|
||||
void printHelp(const string & programName, std::ostream & out) override;
|
||||
};
|
||||
|
||||
class Store;
|
||||
|
|
|
@ -36,6 +36,20 @@ struct CmdVerify : StorePathsCommand
|
|||
return "verify the integrity of store paths";
|
||||
}
|
||||
|
||||
Examples examples() override
|
||||
{
|
||||
return {
|
||||
Example{
|
||||
"To verify the entire Nix store:",
|
||||
"nix verify --all"
|
||||
},
|
||||
Example{
|
||||
"To check whether each path in the closure of Firefox has at least 2 signatures:",
|
||||
"nix verify -r -n2 --no-contents $(type -p firefox)"
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
void run(ref<Store> store, Paths storePaths) override
|
||||
{
|
||||
restoreAffinity(); // FIXME
|
||||
|
|
Loading…
Reference in a new issue