Returns whether the launcher is supported on the current system.
| public isSupported ( ) : boolean | ||
| return | boolean | Whether the launcher is supported on the current system. |
/**
* {@inheritdoc}
*/
public function handle()
{
if (!$this->processLauncher->isSupported()) {
throw new RuntimeException('The ProcessLauncher must be supported for the man help to run.');
}
if (!$this->manBinary) {
$this->manBinary = $this->executableFinder->find('man');
}
if (!$this->manBinary) {
throw new RuntimeException('The "man" binary was not found.');
}
return $this->processLauncher->launchProcess(escapeshellcmd($this->manBinary) . ' -l %path%', array('path' => $this->path), false);
}
/**
* {@inheritdoc}
*/
public function handle(Args $args, IO $io)
{
if ($this->processLauncher->isSupported()) {
if (!$this->lessBinary) {
$this->lessBinary = $this->executableFinder->find('less');
}
if ($this->lessBinary) {
return $this->processLauncher->launchProcess(escapeshellcmd($this->lessBinary) . ' %path%', array('path' => $this->path), false);
}
}
$io->write(file_get_contents($this->path));
return 0;
}
/**
* Callback for selecting the handler that should be run.
*
* @param Args $args The console arguments.
* @param IO $io The I/O.
* @param Command $command The handled command.
*
* @return string The name of the handler to run.
*/
public function getHandlerToRun(Args $args, IO $io, Command $command)
{
$rawArgs = $args->getRawArgs();
// The raw arguments should always be available, but check anyway
if (!$rawArgs) {
return 'text';
}
// If "-h" is given, always print the short text usage
if ($rawArgs->hasToken('-h')) {
return 'text';
}
// Check if any of the options is set
foreach ($this->getRegisteredNames() as $handlerName) {
if ($rawArgs->hasToken('--' . $handlerName)) {
return $handlerName;
}
}
// No format option is set, "-h" is not set
// If a command is given or if "--help" is set, display the manual
if ($rawArgs->hasToken('--help')) {
// Return "man" if the binary is available and the man page exists
// The process launcher must be supported on the system
$manPage = $this->getManPage($command->getApplication(), $args);
if (file_exists($manPage) && $this->processLauncher->isSupported()) {
if (!$this->manBinary) {
$this->manBinary = $this->executableFinder->find('man');
}
if ($this->manBinary) {
return 'man';
}
}
// Return "ascii-doc" if the AsciiDoc page exists
$asciiDocPage = $this->getAsciiDocPage($command->getApplication(), $args);
if (file_exists($asciiDocPage)) {
return 'ascii-doc';
}
}
// No command, no option -> display command list as text
return 'text';
}
