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libphutil/src/console/format.php
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format.php
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<?php
function phutil_console_format($format /* ... */) {
$args = func_get_args();
return call_user_func_array(
array('PhutilConsoleFormatter', 'formatString'),
$args);
}
function phutil_console_confirm($prompt, $default_no = true) {
$prompt_options = $default_no ? '[y/N]' : '[Y/n]';
do {
$response = phutil_console_prompt($prompt.' '.$prompt_options);
$c = trim(strtolower($response));
} while ($c != 'y' && $c != 'n' && $c != '');
echo "\n";
if ($default_no) {
return ($c == 'y');
} else {
return ($c != 'n');
}
}
function phutil_console_select($prompt, $min, $max) {
$select_options = '['.$min.' - '.$max.']';
do {
$response = phutil_console_prompt($prompt.' '.$select_options);
$selection = trim($response);
if (preg_match('/^\d+\z/', $selection)) {
$selection = (int)$selection;
if ($selection >= $min && $selection <= $max) {
return $selection;
}
}
} while (true);
}
function phutil_console_prompt($prompt, $history = '') {
echo "\n\n";
$prompt = phutil_console_wrap($prompt.' ', 4);
try {
phutil_console_require_tty();
} catch (PhutilConsoleStdinNotInteractiveException $ex) {
// Throw after echoing the prompt so the user has some idea what happened.
echo $prompt;
throw $ex;
}
// `escapeshellarg` makes double quotes in the command below disappear on
// Windows, which breaks prompts when using history. See T6348
$use_history = !phutil_is_windows();
if ($history == '') {
$use_history = false;
} else {
// Test if bash is available by seeing if it can run `true`.
list($err) = exec_manual('bash -c %s', 'true');
if ($err) {
$use_history = false;
}
}
if (!$use_history) {
echo $prompt;
$response = fgets(STDIN);
} else {
// There's around 0% chance that readline() is available directly in PHP,
// so we're using bash/read/history instead.
$command = csprintf(
'bash -c %s',
csprintf(
'history -r %s 2>/dev/null; '.
'read -e -p %s; '.
'echo "$REPLY"; '.
'history -s "$REPLY" 2>/dev/null; '.
'history -w %s 2>/dev/null',
$history,
$prompt,
$history));
// execx() doesn't work with input, phutil_passthru() doesn't return output.
$response = shell_exec($command);
}
return rtrim($response, "\r\n");
}
/**
* Soft wrap text for display on a console, respecting UTF8 character boundaries
* and ANSI color escape sequences.
*
* @param string Text to wrap.
* @param int Optional indent level.
* @param bool True to also indent the first line.
* @return string Wrapped text.
*/
function phutil_console_wrap($text, $indent = 0, $with_prefix = true) {
$lines = array();
$width = (78 - $indent);
$esc = chr(27);
$break_pos = null;
$len_after_break = 0;
$line_len = 0;
$line = array();
$lines = array();
$vector = phutil_utf8v($text);
$vector_len = count($vector);
for ($ii = 0; $ii < $vector_len; $ii++) {
$chr = $vector[$ii];
// If this is an ANSI escape sequence for a color code, just consume it
// without counting it toward the character limit. This prevents lines
// with bold/color on them from wrapping too early.
if ($chr == $esc) {
for ($ii; $ii < $vector_len; $ii++) {
$line[] = $vector[$ii];
if ($vector[$ii] == 'm') {
break;
}
}
continue;
}
$line[] = $chr;
++$line_len;
++$len_after_break;
if ($line_len > $width) {
if ($break_pos !== null) {
$slice = array_slice($line, 0, $break_pos);
while (count($slice) && end($slice) == ' ') {
array_pop($slice);
}
$slice[] = "\n";
$lines[] = $slice;
$line = array_slice($line, $break_pos);
$line_len = $len_after_break;
$len_after_break = 0;
$break_pos = null;
}
}
if ($chr == ' ') {
$break_pos = count($line);
$len_after_break = 0;
}
if ($chr == "\n") {
$lines[] = $line;
$line = array();
$len_after_break = 0;
$line_len = 0;
$break_pos = null;
}
}
if ($line) {
if ($line) {
$lines[] = $line;
}
}
$pre = null;
if ($indent) {
$pre = str_repeat(' ', $indent);
}
foreach ($lines as $idx => $line) {
if ($idx == 0 && !$with_prefix) {
$prefix = null;
} else {
$prefix = $pre;
}
$lines[$idx] = $prefix.implode('', $line);
}
return implode('', $lines);
}
function phutil_console_require_tty() {
if (function_exists('posix_isatty') && !posix_isatty(STDIN)) {
throw new PhutilConsoleStdinNotInteractiveException();
}
}
/**
* Determine the width of the terminal, if possible. Returns `null` on failure.
*
* @return int|null Terminal width in characters, or null on failure.
*/
function phutil_console_get_terminal_width() {
static $width;
if ($width === null) {
if (phutil_is_windows()) {
// TODO: Figure out how to get this working in Windows.
return null;
}
$tmp = new TempFile();
// NOTE: We can't just execute this because it won't be connected to a TTY
// if we do.
$err = phutil_passthru('tput cols > %s', $tmp);
if ($err) {
return null;
}
try {
$cols = Filesystem::readFile($tmp);
} catch (FilesystemException $ex) {
return null;
}
$width = (int)$cols;
if (!$width) {
$width = null;
}
}
return $width;
}
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