library\think\console\output\Ask.php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------
namespace think\console\output;
use think\console\Input;
use think\console\Output;
use think\console\output\question\Choice;
use think\console\output\question\Confirmation;
class Ask
{
private static $stty;
private static $shell;
/** @var Input */
protected $input;
/** @var Output */
protected $output;
/** @var Question */
protected $question;
public function __construct(Input $input, Output $output, Question $question)
{
$this->input = $input;
$this->output = $output;
$this->question = $question;
}
public function run()
{
if (!$this->input->isInteractive()) {
return $this->question->getDefault();
}
if (!$this->question->getValidator()) {
return $this->doAsk();
}
$that = $this;
$interviewer = function () use ($that) {
return $that->doAsk();
};
return $this->validateAttempts($interviewer);
}
protected function doAsk()
{
$this->writePrompt();
$inputStream = STDIN;
$autocomplete = $this->question->getAutocompleterValues();
if (null === $autocomplete || !$this->hasSttyAvailable()) {
$ret = false;
if ($this->question->isHidden()) {
try {
$ret = trim($this->getHiddenResponse($inputStream));
} catch (\RuntimeException $e) {
if (!$this->question->isHiddenFallback()) {
throw $e;
}
}
}
if (false === $ret) {
$ret = fgets($inputStream, 4096);
if (false === $ret) {
throw new \RuntimeException('Aborted');
}
$ret = trim($ret);
}
} else {
$ret = trim($this->autocomplete($inputStream));
}
$ret = strlen($ret) > 0 ? $ret : $this->question->getDefault();
if ($normalizer = $this->question->getNormalizer()) {
return $normalizer($ret);
}
return $ret;
}
private function autocomplete($inputStream)
{
$autocomplete = $this->question->getAutocompleterValues();
$ret = '';
$i = 0;
$ofs = -1;
$matches = $autocomplete;
$numMatches = count($matches);
$sttyMode = shell_exec('stty -g');
shell_exec('stty -icanon -echo');
while (!feof($inputStream)) {
$c = fread($inputStream, 1);
if ("\177" === $c) {
if (0 === $numMatches && 0 !== $i) {
--$i;
$this->output->write("\033[1D");
}
if ($i === 0) {
$ofs = -1;
$matches = $autocomplete;
$numMatches = count($matches);
} else {
$numMatches = 0;
}
$ret = substr($ret, 0, $i);
} elseif ("\033" === $c) {
$c .= fread($inputStream, 2);
if (isset($c[2]) && ('A' === $c[2] || 'B' === $c[2])) {
if ('A' === $c[2] && -1 === $ofs) {
$ofs = 0;
}
if (0 === $numMatches) {
continue;
}
$ofs += ('A' === $c[2]) ? -1 : 1;
$ofs = ($numMatches + $ofs) % $numMatches;
}
} elseif (ord($c) < 32) {
if ("\t" === $c || "\n" === $c) {
if ($numMatches > 0 && -1 !== $ofs) {
$ret = $matches[$ofs];
$this->output->write(substr($ret, $i));
$i = strlen($ret);
}
if ("\n" === $c) {
$this->output->write($c);
break;
}
$numMatches = 0;
}
continue;
} else {
$this->output->write($c);
$ret .= $c;
++$i;
$numMatches = 0;
$ofs = 0;
foreach ($autocomplete as $value) {
if (0 === strpos($value, $ret) && $i !== strlen($value)) {
$matches[$numMatches++] = $value;
}
}
}
$this->output->write("\033[K");
if ($numMatches > 0 && -1 !== $ofs) {
$this->output->write("\0337");
$this->output->highlight(substr($matches[$ofs], $i));
$this->output->write("\0338");
}
}
shell_exec(sprintf('stty %s', $sttyMode));
return $ret;
}
protected function getHiddenResponse($inputStream)
{
if ('\\' === DIRECTORY_SEPARATOR) {
$exe = __DIR__ . '/../bin/hiddeninput.exe';
$value = rtrim(shell_exec($exe));
$this->output->writeln('');
if (isset($tmpExe)) {
unlink($tmpExe);
}
return $value;
}
if ($this->hasSttyAvailable()) {
$sttyMode = shell_exec('stty -g');
shell_exec('stty -echo');
$value = fgets($inputStream, 4096);
shell_exec(sprintf('stty %s', $sttyMode));
if (false === $value) {
throw new \RuntimeException('Aborted');
}
$value = trim($value);
$this->output->writeln('');
return $value;
}
if (false !== $shell = $this->getShell()) {
$readCmd = $shell === 'csh' ? 'set mypassword = $<' : 'read -r mypassword';
$command = sprintf("/usr/bin/env %s -c 'stty -echo; %s; stty echo; echo \$mypassword'", $shell, $readCmd);
$value = rtrim(shell_exec($command));
$this->output->writeln('');
return $value;
}
throw new \RuntimeException('Unable to hide the response.');
}
protected function validateAttempts($interviewer)
{
/** @var \Exception $error */
$error = null;
$attempts = $this->question->getMaxAttempts();
while (null === $attempts || $attempts--) {
if (null !== $error) {
$this->output->error($error->getMessage());
}
try {
return call_user_func($this->question->getValidator(), $interviewer());
} catch (\Exception $error) {
}
}
throw $error;
}
/**
* 显示问题的提示信息
*/
protected function writePrompt()
{
$text = $this->question->getQuestion();
$default = $this->question->getDefault();
switch (true) {
case null === $default:
$text = sprintf(' %s:', $text);
break;
case $this->question instanceof Confirmation:
$text = sprintf(' %s (yes/no) [%s]:', $text, $default ? 'yes' : 'no');
break;
case $this->question instanceof Choice && $this->question->isMultiselect():
$choices = $this->question->getChoices();
$default = explode(',', $default);
foreach ($default as $key => $value) {
$default[$key] = $choices[trim($value)];
}
$text = sprintf(' %s [%s]:', $text, implode(', ', $default));
break;
case $this->question instanceof Choice:
$choices = $this->question->getChoices();
$text = sprintf(' %s [%s]:', $text, $choices[$default]);
break;
default:
$text = sprintf(' %s [%s]:', $text, $default);
}
$this->output->writeln($text);
if ($this->question instanceof Choice) {
$width = max(array_map('strlen', array_keys($this->question->getChoices())));
foreach ($this->question->getChoices() as $key => $value) {
$this->output->writeln(sprintf(" [%-${width}s] %s", $key, $value));
}
}
$this->output->write(' > ');
}
private function getShell()
{
if (null !== self::$shell) {
return self::$shell;
}
self::$shell = false;
if (file_exists('/usr/bin/env')) {
$test = "/usr/bin/env %s -c 'echo OK' 2> /dev/null";
foreach (['bash', 'zsh', 'ksh', 'csh'] as $sh) {
if ('OK' === rtrim(shell_exec(sprintf($test, $sh)))) {
self::$shell = $sh;
break;
}
}
}
return self::$shell;
}
private function hasSttyAvailable()
{
if (null !== self::$stty) {
return self::$stty;
}
exec('stty 2>&1', $output, $exitcode);
return self::$stty = $exitcode === 0;
}
}