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<?php
class cli {
protected ?array $commandsCache = null;
public function __construct(
protected string $ns
) {}
protected function usage($error = null): void {
global $argv;
if (!is_null($error))
echo "error: {$error}\n\n";
echo "Usage: $argv[0] COMMAND\n\nCommands:\n";
foreach ($this->getCommands() as $c)
echo " $c\n";
exit(is_null($error) ? 0 : 1);
}
public function getCommands(): array {
if (is_null($this->commandsCache)) {
$funcs = array_filter(get_defined_functions()['user'], fn(string $f) => str_starts_with($f, $this->ns));
$funcs = array_map(fn(string $f) => str_replace('_', '-', substr($f, strlen($this->ns.'\\'))), $funcs);
$this->commandsCache = array_values($funcs);
}
return $this->commandsCache;
}
public function run(): void {
global $argv, $argc;
if (PHP_SAPI != 'cli')
cli::die('SAPI != cli');
if ($argc < 2)
$this->usage();
$func = $argv[1];
if (!in_array($func, $this->getCommands()))
self::usage('unknown command "'.$func.'"');
$func = str_replace('-', '_', $func);
call_user_func($this->ns.'\\'.$func);
}
public static function input(string $prompt): string {
echo $prompt;
$input = substr(fgets(STDIN), 0, -1);
return $input;
}
public static function silentInput(string $prompt = ''): string {
echo $prompt;
system('stty -echo');
$input = substr(fgets(STDIN), 0, -1);
system('stty echo');
echo "\n";
return $input;
}
public static function die($error): void {
self::error($error);
exit(1);
}
public static function error($error): void {
fwrite(STDERR, "error: {$error}\n");
}
}
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