/**
* Present a list of choices to user, return choice
* @param Command $command The command requesting input
* @param array $choices List of choices
* @param int $default Default choice (1-array size), -1 to abort
* @param string $abort String to tag on end for aborting selection
* @return int -1 if abort selected, otherwise one greater than $choice index
* (in other words, choosing $choice[0] returns 1)
* @throws InvalidArgumentException If argument is invalid
*/
function pick_from_list(Command $command, $title, array $choices, $default = 0, $abort = null)
{
if ($abort) {
$choices[] = $abort;
}
$numChoices = count($choices);
if (!$numChoices) {
throw new \InvalidArgumentException("Must have at least one choice");
}
if ($default == -1 && empty($abort)) {
throw new \InvalidArgumentException('Cannot use default=-1 without $abort option');
}
if (!between($default, -1, $numChoices)) {
throw new \InvalidArgumentException("Invalid value, default={$default}");
}
$question = "Please enter a number between 1-{$numChoices}";
if ($default > 0) {
$question .= " (default is {$default})";
} elseif ($default < 0) {
$question .= " (enter to abort)";
$default = $numChoices;
}
$question .= ':';
while (1) {
$command->line('');
$command->info($title);
$command->line('');
for ($i = 0; $i < $numChoices; $i++) {
$command->line($i + 1 . ". " . $choices[$i]);
}
$command->line('');
$answer = $command->ask($question);
if ($answer == '') {
$answer = $default;
}
if (between($answer, 1, $numChoices)) {
if ($abort and $answer == $numChoices) {
$answer = -1;
}
return (int) $answer;
}
// Output wrong choice
$command->line('');
$formatter = $command->getHelperSet()->get('formatter');
$block = $formatter->formatBlock('Invalid entry!', 'error', true);
$command->line($block);
}
}
