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<?php |
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namespace Nkey\Caribu\Console; |
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/** |
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* This class is part of Caribu command line interface framework |
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* |
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* @author Maik Greubel <[email protected]> |
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*/ |
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class CLI |
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{ |
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/** |
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* The command line prompt |
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* |
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* @var string |
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*/ |
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private $prompt; |
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/** |
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* Handle for stdin channel |
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* |
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* @var resource |
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*/ |
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private $stdin; |
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/** |
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* Handle for stdout channel |
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* |
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* @var resource |
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*/ |
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private $stdout; |
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/** |
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* Handle for stderr channel |
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* |
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* @var resource |
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*/ |
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private $stderr; |
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/** |
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* Command line parser |
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* |
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* @var Parser |
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*/ |
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private $parser; |
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/** |
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* Create a new CLI instance |
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* |
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* @param string $prompt |
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* Optional command line prompt (default 'cli') |
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* @param \Nkey\Caribu\Console\Parser $parser |
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* Optional command line parser (default instance of \Nkey\Caribu\Console\DefaultParser) |
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*/ |
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public function __construct(string $prompt = "cli", Parser $parser = null) |
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{ |
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$this->setPrompt($prompt); |
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$this->parser = $parser; |
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if (null === $this->parser) { |
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$this->parser = new DefaultParser(); |
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} |
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$this->stdin = fopen("php://stdin", "r"); |
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$this->stdout = fopen("php://stdout", "w"); |
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$this->stderr = fopen("php://stderr", "w"); |
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} |
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/** |
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* Set a custom stdin channel |
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* |
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* @param resource $stdin |
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* The channel |
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* @return \Nkey\Caribu\Console\CLI |
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*/ |
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public function setStdIn($stdin): CLI |
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{ |
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$this->stdin = $stdin; |
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return $this; |
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} |
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/** |
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* Set a custom stdout channel |
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* |
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* @param resource $stdout |
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* The channel |
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* @return \Nkey\Caribu\Console\CLI |
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*/ |
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public function setStdOut($stdout): CLI |
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{ |
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$this->stdout = $stdout; |
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return $this; |
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} |
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/** |
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* Set a custom stderr channel |
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* |
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* @param resource $stderr |
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* The channel |
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* @return \Nkey\Caribu\Console\CLI |
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*/ |
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public function setStdErr($stderr): CLI |
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{ |
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$this->stderr = $stderr; |
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return $this; |
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} |
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/** |
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* Read full line from stdin |
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* |
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* @return ParsedCommand The parsed command |
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*/ |
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public function readLine(): ParsedCommand |
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{ |
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$this->writeStdout(sprintf("%s > ", $this->prompt)); |
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$input = stream_get_line($this->stdin, 4096, PHP_EOL); |
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return $this->parser->parse(trim($input)); |
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} |
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/** |
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* Write output to stdout channel |
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* |
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* @param string $output |
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* The output to write |
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* |
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* @return \Nkey\Caribu\Console\CLI Fluent interface instance |
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*/ |
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public function writeStdout(string $output): CLI |
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{ |
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fprintf($this->stdout, "%s", $output); |
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fflush($this->stdout); |
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return $this; |
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} |
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/** |
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* Write a line to stdout channel |
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* |
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* @param string $line |
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* The line to write, line break will be added |
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* |
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* @return \Nkey\Caribu\Console\CLI |
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*/ |
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public function writeStdoutLine(string $line): CLI |
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{ |
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$this->writeStdout(sprintf("%s%s", $line, PHP_EOL)); |
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return $this; |
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} |
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/** |
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* Write a line to stderr channel |
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* |
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* @param string $line |
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* The line to write, line break will be added |
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* |
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* @return \Nkey\Caribu\Console\CLI |
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*/ |
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public function writeStderrLine(string $line): CLI |
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{ |
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$this->writeStderr(sprintf("%s%s", $line, PHP_EOL)); |
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return $this; |
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} |
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/** |
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* Write output to stderr channel |
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* |
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* @param string $output |
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* The output to write |
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* |
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* @return \Nkey\Caribu\Console\CLI Fluent interface instance |
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*/ |
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public function writeStderr(string $output): CLI |
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{ |
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fprintf($this->stderr, "%s", $output); |
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fflush($this->stderr); |
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return $this; |
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} |
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/** |
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* Set the prompt |
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* |
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* @param string $prompt |
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* The prompt to set |
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* |
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* @return \Nkey\Caribu\Console\CLI Fluent interface instance |
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*/ |
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public function setPrompt(string $prompt): CLI |
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{ |
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$this->prompt = $prompt; |
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return $this; |
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} |
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} |
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