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PhutilConsoleServer.php
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Fri, Nov 1, 02:23

PhutilConsoleServer.php
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<?php
/**
* @group console
*/
final class PhutilConsoleServer {
private $clients = array();
private $handler;
private $enableLog;
public function handleMessage(PhutilConsoleMessage $message) {
$data = $message->getData();
$type = $message->getType();
switch ($type) {
case PhutilConsoleMessage::TYPE_CONFIRM:
$ok = phutil_console_confirm($data['prompt'], !$data['default']);
return $this->buildMessage(
PhutilConsoleMessage::TYPE_INPUT,
$ok);
case PhutilConsoleMessage::TYPE_PROMPT:
$response = phutil_console_prompt(
$data['prompt'],
idx($data, 'history'));
return $this->buildMessage(
PhutilConsoleMessage::TYPE_INPUT,
$response);
case PhutilConsoleMessage::TYPE_OUT:
$this->writeText(STDOUT, $data);
return null;
case PhutilConsoleMessage::TYPE_ERR:
$this->writeText(STDERR, $data);
return null;
case PhutilConsoleMessage::TYPE_LOG:
if ($this->enableLog) {
$this->writeText(STDERR, $data);
}
return null;
case PhutilConsoleMessage::TYPE_ENABLED:
switch ($data['which']) {
case PhutilConsoleMessage::TYPE_LOG:
$enabled = $this->enableLog;
break;
default:
$enabled = true;
break;
}
return $this->buildMessage(
PhutilConsoleMessage::TYPE_IS_ENABLED,
$enabled);
case PhutilConsoleMessage::TYPE_TTY:
case PhutilConsoleMessage::TYPE_COLS:
switch ($data['which']) {
case PhutilConsoleMessage::TYPE_OUT:
$which = STDOUT;
break;
case PhutilConsoleMessage::TYPE_ERR:
$which = STDERR;
break;
}
switch ($type) {
case PhutilConsoleMessage::TYPE_TTY:
if (function_exists('posix_isatty')) {
$is_a_tty = posix_isatty($which);
} else {
$is_a_tty = null;
}
return $this->buildMessage(
PhutilConsoleMessage::TYPE_IS_TTY,
$is_a_tty);
case PhutilConsoleMessage::TYPE_COLS:
// TODO: This is an approximation which might not be perfectly
// accurate.
$width = phutil_console_get_terminal_width();
return $this->buildMessage(
PhutilConsoleMessage::TYPE_COL_WIDTH,
$width);
}
break;
default:
if ($this->handler) {
return call_user_func($this->handler, $message);
} else {
throw new Exception(
"Received unknown console message of type '{$type}'.");
}
}
}
/**
* Set handler called for unknown messages.
*
* @param callable Signature: (PhutilConsoleMessage $message).
*/
public function setHandler($callback) {
$this->handler = $callback;
return $this;
}
private function buildMessage($type, $data) {
$response = new PhutilConsoleMessage();
$response->setType($type);
$response->setData($data);
return $response;
}
public function addExecFutureClient(ExecFuture $future) {
$io_channel = new PhutilExecChannel($future);
$protocol_channel = new PhutilPHPObjectProtocolChannel($io_channel);
$server_channel = new PhutilConsoleServerChannel($protocol_channel);
$io_channel->setStderrHandler(array($server_channel, 'didReceiveStderr'));
return $this->addClient($server_channel);
}
public function addClient(PhutilConsoleServerChannel $channel) {
$this->clients[] = $channel;
return $this;
}
public function setEnableLog($enable) {
$this->enableLog = $enable;
return $this;
}
public function run() {
while ($this->clients) {
PhutilChannel::waitForAny($this->clients);
foreach ($this->clients as $key => $client) {
if (!$client->update()) {
// If the client has exited, remove it from the list of clients.
// We still need to process any remaining buffered I/O.
unset($this->clients[$key]);
}
while ($message = $client->read()) {
$response = $this->handleMessage($message);
if ($response) {
$client->write($response);
}
}
}
}
}
private function writeText($where, array $argv) {
$text = call_user_func_array('phutil_console_format', $argv);
fprintf($where, '%s', $text);
}
}

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