/**
* Define a field
*
* @param sndsgd\Field $field The field to define
* @return sndsgd\field\Collection
*/
public function addField(Field $field)
{
$name = $field->getName();
if (array_key_exists($name, $this->fields)) {
throw new DuplicateFieldNameException($name);
}
$this->fields[$name] = $field;
foreach ($field->getAliases() as $alias) {
if (array_key_exists($alias, $this->fieldAliases)) {
throw new DuplicateFieldAliasException($alias);
}
$this->fieldAliases[$alias] = $name;
}
return $this;
}
/**
* Create usage instructions for a field
*
* @param sndsgd\Field $field
* @return string
*/
private function createFieldUsage(Field $field)
{
$name = $field->getName();
$opts = array_merge(["--{$name}"], $field->getAliases());
$isBoolean = $field instanceof BooleanField;
$hint = $field->getData('short-hint', $name);
array_walk($opts, function (&$v) use($isBoolean, $hint) {
$isName = substr($v, 0, 2) === '--';
if ($isName) {
if (!$isBoolean) {
$v .= '=';
}
} else {
if (!$isName) {
$v = "-{$v} ";
}
}
if (!$isBoolean) {
$v .= "<{$hint}>";
}
$v = trim($v);
});
$opts = implode('|', $opts);
$isRequired = $field->hasRule('sndsgd\\field\\rule\\Required');
if (!$isRequired) {
$opts = "[{$opts}]";
}
return $opts;
}
