/** * Autocompletes a question. * * @param OutputInterface $output * @param Question $question * * @return string */ private function autocomplete(OutputInterface $output, Question $question, $inputStream) { $autocomplete = $question->getAutocompleterValues(); $ret = ''; $i = 0; $ofs = -1; $matches = $autocomplete; $numMatches = count($matches); $sttyMode = shell_exec('stty -g'); // Disable icanon (so we can fread each keypress) and echo (we'll do echoing here instead) shell_exec('stty -icanon -echo'); // Add highlighted text style $output->getFormatter()->setStyle('hl', new OutputFormatterStyle('black', 'white')); // Read a keypress while (!feof($inputStream)) { $c = fread($inputStream, 1); // Backspace Character if ("" === $c) { if (0 === $numMatches && 0 !== $i) { --$i; // Move cursor backwards $output->write("[1D"); } if ($i === 0) { $ofs = -1; $matches = $autocomplete; $numMatches = count($matches); } else { $numMatches = 0; } // Pop the last character off the end of our string $ret = substr($ret, 0, $i); } elseif ("" === $c) { // Did we read an escape sequence? $c .= fread($inputStream, 2); // A = Up Arrow. B = Down Arrow 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]; // Echo out remaining chars for current match $output->write(substr($ret, $i)); $i = strlen($ret); } if ("\n" === $c) { $output->write($c); break; } $numMatches = 0; } continue; } else { $output->write($c); $ret .= $c; ++$i; $numMatches = 0; $ofs = 0; foreach ($autocomplete as $value) { // If typed characters match the beginning chunk of value (e.g. [AcmeDe]moBundle) if (0 === strpos($value, $ret) && $i !== strlen($value)) { $matches[$numMatches++] = $value; } } } // Erase characters from cursor to end of line $output->write("[K"); if ($numMatches > 0 && -1 !== $ofs) { // Save cursor position $output->write("7"); // Write highlighted text $output->write('<hl>' . substr($matches[$ofs], $i) . '</hl>'); // Restore cursor position $output->write("8"); } } // Reset stty so it behaves normally again shell_exec(sprintf('stty %s', $sttyMode)); return $ret; }
private function autocomplete(OutputInterface $output, Question $question, $inputStream) { $autocomplete = $question->getAutocompleterValues(); $ret = ''; $i = 0; $ofs = -1; $matches = $autocomplete; $numMatches = count($matches); $sttyMode = shell_exec('stty -g'); shell_exec('stty -icanon -echo'); $output->getFormatter()->setStyle('hl', new OutputFormatterStyle('black', 'white')); while (!feof($inputStream)) { $c = fread($inputStream, 1); if ("" === $c) { if (0 === $numMatches && 0 !== $i) { --$i; $output->write("[1D"); } if ($i === 0) { $ofs = -1; $matches = $autocomplete; $numMatches = count($matches); } else { $numMatches = 0; } $ret = substr($ret, 0, $i); } elseif ("" === $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]; $output->write(substr($ret, $i)); $i = strlen($ret); } if ("\n" === $c) { $output->write($c); break; } $numMatches = 0; } continue; } else { $output->write($c); $ret .= $c; ++$i; $numMatches = 0; $ofs = 0; foreach ($autocomplete as $value) { if (0 === strpos($value, $ret) && $i !== strlen($value)) { $matches[$numMatches++] = $value; } } } $output->write("[K"); if ($numMatches > 0 && -1 !== $ofs) { $output->write("7"); $output->write('<hl>' . substr($matches[$ofs], $i) . '</hl>'); $output->write("8"); } } shell_exec(sprintf('stty %s', $sttyMode)); return $ret; }