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#include "completer_command.h"
#include "completion_generator.h"
#include "last_getopt.h"
#include "wrap.h"
#include <library/cpp/colorizer/colors.h>
#include <util/string/subst.h>
namespace NLastGetopt {
TString MakeInfo(TStringBuf command, TStringBuf flag) {
TString info = (
"This command generates shell script with completion function and prints it to `stdout`, "
"allowing one to re-direct the output to the file of their choosing. "
"Where you place the file will depend on which shell and operating system you are using."
"\n"
"\n"
"\n"
"{B}BASH (Linux){R}:"
"\n"
"\n"
"For system-wide commands, completion files are stored in `/etc/bash_completion.d/`. "
"For user commands, they are stored in `~/.local/share/bash-completion/completions`. "
"So, pipe output of this script to a file in one of these directories:"
"\n"
"\n"
" $ mkdir -p ~/.local/share/bash-completion/completions"
"\n"
" $ {command} {completion} bash >"
"\n"
" ~/.local/share/bash-completion/completions/{command}"
"\n"
"\n"
"You'll need to restart your shell for changes to take effect."
"\n"
"\n"
"\n"
"{B}BASH (OSX){R}:"
"\n"
"\n"
"You'll need `bash-completion` (or `bash-completion@2` if you're using non-default, newer bash) "
"homebrew formula. Completion files are stored in `/usr/local/etc/bash_completion.d`:"
"\n"
"\n"
" $ mkdir -p $(brew --prefix)/etc/bash_completion.d"
"\n"
" $ {command} {completion} bash >"
"\n"
" $(brew --prefix)/etc/bash_completion.d/{command}"
"\n"
"\n"
"Alternatively, just source the script in your `~/.bash_profile`."
"\n"
"\n"
"You'll need to restart your shell for changes to take effect."
"\n"
"\n"
"\n"
"{B}ZSH{R}:"
"\n"
"\n"
"Zsh looks for completion scripts in any directory listed in `$fpath` variable. We recommend placing "
"completions to `~/.zfunc`:"
"\n"
"\n"
" $ mkdir -m755 -p ~/.zfunc"
"\n"
" $ {command} {completion} zsh > ~/.zfunc/_{command}"
"\n"
"\n"
"Add the following lines to your `.zshrc` just before `compinit`:"
"\n"
"\n"
" fpath+=~/.zfunc"
"\n"
"\n"
"You'll need to restart your shell for changes to take effect.");
SubstGlobal(info, "{command}", command);
SubstGlobal(info, "{completion}", flag);
SubstGlobal(info, "{B}", NColorizer::StdErr().LightDefault());
SubstGlobal(info, "{R}", NColorizer::StdErr().Reset());
return info;
}
NComp::ICompleterPtr ShellChoiceCompleter() {
return NComp::Choice({{"zsh"}, {"bash"}});
}
TOpt MakeCompletionOpt(const TOpts* opts, TString command, TString name) {
return TOpt()
.AddLongName(name)
.Help("generate tab completion script for zsh or bash")
.CompletionHelp("generate tab completion script")
.OptionalArgument("shell-syntax")
.CompletionArgHelp("shell syntax for completion script")
.IfPresentDisableCompletion()
.Completer(ShellChoiceCompleter())
.Handler1T<TString>([opts, command, name](TStringBuf shell) {
if (shell.empty()) {
Cerr << Wrap(80, MakeInfo(command, "--" + name)) << Endl;
} else if (shell == "bash") {
TBashCompletionGenerator(opts).Generate(command, Cout);
} else if (shell == "zsh") {
TZshCompletionGenerator(opts).Generate(command, Cout);
} else {
Cerr << "Unknown shell name " << TString{shell}.Quote() << Endl;
exit(1);
}
exit(0);
});
}
class TCompleterMode: public TMainClassArgs {
public:
TCompleterMode(const TModChooser* modChooser, TString command, TString modName)
: Command_(std::move(command))
, Modes_(modChooser)
, ModName_(std::move(modName))
{
}
protected:
void RegisterOptions(NLastGetopt::TOpts& opts) override {
TMainClassArgs::RegisterOptions(opts);
opts.SetTitle("Generate tab completion scripts for zsh or bash");
opts.AddSection("Description", MakeInfo(Command_, ModName_));
opts.SetFreeArgsNum(1);
opts.GetFreeArgSpec(0)
.Title("<shell-syntax>")
.Help("shell syntax for completion script (bash or zsh)")
.CompletionArgHelp("shell syntax for completion script")
.Completer(ShellChoiceCompleter());
}
int DoRun(NLastGetopt::TOptsParseResult&& parsedOptions) override {
auto arg = parsedOptions.GetFreeArgs()[0];
arg.to_lower();
if (arg == "bash") {
TBashCompletionGenerator(Modes_).Generate(Command_, Cout);
} else if (arg == "zsh") {
TZshCompletionGenerator(Modes_).Generate(Command_, Cout);
} else {
Cerr << "Unknown shell name " << arg.Quote() << Endl;
parsedOptions.PrintUsage();
return 1;
}
return 0;
}
private:
TString Command_;
const TModChooser* Modes_;
TString ModName_;
};
THolder<TMainClassArgs> MakeCompletionMod(const TModChooser* modChooser, TString command, TString modName) {
return MakeHolder<TCompleterMode>(modChooser, std::move(command), std::move(modName));
}
}
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