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add an initial menu command, which presents several choices to users

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usage is "menu 'label1' 'command1' 'label2' 'command2' ..."
This commit is contained in:
Maxime Coste 2012-05-18 05:20:46 +00:00
parent 56efb42962
commit 5f2471c147
1 changed files with 21 additions and 0 deletions
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21
src/commands.cc
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@ -486,6 +486,26 @@ void eval_string(const CommandParameters& params,
CommandManager::instance().execute(params, context); CommandManager::instance().execute(params, context);
} }
void menu(const CommandParameters& params,
const Context& context)
{
if (params.size() == 0 or (params.size() % 2) != 0)
throw wrong_argument_count();
std::ostringstream oss;
for (int i = 0; i < params.size(); i += 2)
{
oss << i/2 + 1 << "[" << params[i] << "] ";
}
oss << "(empty cancels): ";
String choice = prompt_func(oss.str(), complete_nothing);
int i = atoi(choice.c_str());
if (i > 0 and i < (params.size() / 2) + 1)
CommandManager::instance().execute(params[(i-1)*2+1], context);
}
} }
void register_commands() void register_commands()
@ -558,6 +578,7 @@ void register_commands()
cm.register_command("exec", exec_string); cm.register_command("exec", exec_string);
cm.register_command("eval", eval_string); cm.register_command("eval", eval_string);
cm.register_command("menu", menu);
cm.register_command("def", define_command, CommandManager::IgnoreSemiColons | CommandManager::DeferredShellEval); cm.register_command("def", define_command, CommandManager::IgnoreSemiColons | CommandManager::DeferredShellEval);
cm.register_command("echo", echo_message); cm.register_command("echo", echo_message);