/**
* 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;
}
