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ref.php
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ref.php
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<?php
/**
* Shortcut to ref, HTML mode
*
* @version 1.0
* @param mixed $args
*/
function r(){
// arguments passed to this function
$args = func_get_args();
// options (operators) gathered by the expression parser;
// this variable gets passed as reference to getInputExpressions(), which will store the operators in it
$options = array();
// doh
$output = '';
$ref = new ref('html');
// names of the arguments that were passed to this function
$expressions = ref::getInputExpressions($options);
// something went wrong while trying to parse the source expressions?
// if so, silently ignore this part and leave out the expression info
if(func_num_args() !== count($expressions))
$expressions = array_fill(0, func_num_args(), null);
foreach($args as $index => $arg)
$output .= $ref->query($arg, $expressions[$index]);
// return the results if this function was called with the error suppression operator
if(in_array('@', $options, true))
return $output;
// IE goes funky if there's no doctype
if(!headers_sent() && !ob_get_length())
print '<!DOCTYPE HTML><html><head><title>REF</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body>';
print $output;
// stop the script if this function was called with the bitwise not operator
if(in_array('~', $options, true)){
print '</body></html>';
exit(0);
}
}
/**
* Shortcut to ref, plain text mode
*
* @version 1.0
* @param mixed $args
*/
function rt(){
$args = func_get_args();
$options = array();
$output = '';
$expressions = ref::getInputExpressions($options);
$ref = new ref('text');
if(func_num_args() !== count($expressions))
$expressions = array_fill(0, func_num_args(), null);
foreach($args as $index => $arg)
$output .= $ref->query($arg, $expressions[$index]);
if(in_array('@', $options, true))
return $output;
if(!headers_sent())
header('Content-Type: text/plain; charset=utf-8');
print $output;
if(in_array('~', $options, true))
exit(0);
}
/**
* REF is a nicer alternative to PHP's print_r() / var_dump().
*
* @version 1.0
* @author digitalnature - http://digitalnature.eu
*/
class ref{
const
MARKER_KEY = '_phpRefArrayMarker_';
protected static
/**
* CPU time used for processing
*
* @var array
*/
$time = 0,
/**
* Configuration (+ default values)
*
* @var array
*/
$config = array(
// initial expand depth (for HTML mode only)
'expandDepth' => 1,
// shortcut functions used to access the query method below;
// if they are namespaced, the namespace must be present as well (methods are not supported)
'shortcutFunc' => array('r', 'rt'),
// callbacks for custom/external formatters (as associative array: format => callback)
'formatter' => array(),
// when this option is set to TRUE, additional information is
// returned (note that this seriously affects performance):
// - string matches (date, file, functions, classes, json, serialized data, regex etc.)
// - extra information for some resource types
// - contents of iterator objects
'extendedInfo' => true,
// stylesheet path (for HTML only);
// 'false' means no styles
'stylePath' => '{:dir}/ref.css',
// javascript path (for HTML only);
// 'false' means no js
'scriptPath' => '{:dir}/ref.js',
);
protected
/**
* Tracks current nesting level
*
* @var int
*/
$level = 0,
/**
* Max. expand depth of this instance
*
* @var int
*/
$expDepth = 1,
/**
* Output format of this instance
*
* @var string
*/
$format = null,
/**
* Some environment variables
* used to determine feature support
*
* @var string
*/
$env = array(),
/**
* Used to cache output to speed up processing.
* Cached objects will not be processed again in the same query
*
* @var array
*/
$cache = array();
/**
* Constructor
*
* @param string $format Output format, defaults to 'html'
* @param int|null $expDepth Maximum expand depth (relevant to the HTML format)
*/
public function __construct($format = 'html', $expDepth = null){
$this->format = $format;
$this->expDepth = ($expDepth !== null) ? $expDepth : static::$config['expandDepth'];
$this->env = array(
// php 5.4+ ?
'is54' => version_compare(PHP_VERSION, '5.4') >= 0,
// is the 'mbstring' extension active?
'mbStr' => function_exists('mb_detect_encoding'),
// @see: https://bugs.php.net/bug.php?id=52469
'supportsDate' => (strncasecmp(PHP_OS, 'WIN', 3) !== 0) || (version_compare(PHP_VERSION, '5.3.10') >= 0),
);
}
/**
* Enforce proper use of this class
*
* @param string $name
*/
public function __get($name){
throw new \Exception('No such property');
}
/**
* Enforce proper use of this class
*
* @param string $name
* @param mixed $value
*/
public function __set($name, $value){
throw new \Exception('Not allowed');
}
/**
* Used to dispatch output to a custom formatter
*
* @param string $name
* @param array $args
* @return string
*/
public function __call($name, array $args = array()){
if(isset(static::$config['formatters'][$name]))
return call_user_func_array(static::$config['formatters'][$name], $args);
throw new \Exception('Method not defined');
}
/**
* Generate structured information about a variable/value/expression (subject)
*
* @param mixed $subject
* @param string $expression
* @return string
*/
public function query($subject, $expression = null){
$startTime = microtime(true);
$output = $this->{"to{$this->format}"}('root', $this->evaluate($subject), $this->evaluateExp($expression));
$this->cache = array();
static::$time += microtime(true) - $startTime;
return $output;
}
/**
* Executes a function the given number of times and returns the elapsed time.
*
* Keep in mind that the returned time includes function call overhead (including
* microtime calls) x iteration count. This is why this is better suited for
* determining which of two or more functions is the fastest, rather than
* finding out how fast is a single function.
*
* @param int $iterations Number of times the function will be executed
* @param callable $function Function to execute
* @param mixed &$output If given, last return value will be available in this variable
* @return double Elapsed time
*/
public static function timeFunc($iterations, $function, &$output = null){
$time = 0;
for($i = 0; $i < $iterations; $i++){
$start = microtime(true);
$output = call_user_func($function);
$time += microtime(true) - $start;
}
return round($time, 4);
}
/**
* Timery utility
*
* First call of this function will start the timer.
* The second call will stop the timer and return the elapsed time
* since the timer started.
*
* Multiple timers can be controlled simultaneously by specifying a timer ID.
*
* @since 1.0
* @param int $id Timer ID, optional
* @param int $precision Precision of the result, optional
* @return void|double Elapsed time, or void if the timer was just started
*/
public static function timer($id = 1, $precision = 4){
static
$timers = array();
// check if this timer was started, and display the elapsed time if so
if(isset($timers[$id])){
$elapsed = round(microtime(true) - $timers[$id], $precision);
unset($timers[$id]);
return $elapsed;
}
// ID doesn't exist, start new timer
$timers[$id] = microtime(true);
}
/**
* Parses a DocBlock comment into a data structure.
*
* @link http://pear.php.net/manual/en/standards.sample.php
* @param string $comment DocBlock comment (must start with /**)
* @param string|null $key Field to return (optional)
* @return array|string|null Array containing all fields, array/string with the contents of
* the requested field, or null if the comment is empty/invalid
*/
public static function parseComment($comment, $key = null){
$description = '';
$tags = array();
$tag = null;
$pointer = '';
$padding = 0;
$comment = preg_split('/\r\n|\r|\n/', '* ' . trim($comment, "/* \t\n\r\0\x0B"));
// analyze each line
foreach($comment as $line){
// drop any wrapping spaces
$line = trim($line);
// drop "* "
if($line !== '')
$line = substr($line, 2);
if(strpos($line, '@') !== 0){
// preserve formatting of tag descriptions,
// because they may span across multiple lines
if($tag !== null){
$trimmed = trim($line);
if($padding !== 0)
$trimmed = static::strPad($trimmed, static::strLen($line) - $padding, ' ', STR_PAD_LEFT);
else
$padding = static::strLen($line) - static::strLen($trimmed);
$pointer .= "\n{$trimmed}";
continue;
}
// tag definitions have not started yet; assume this is part of the description text
$description .= "\n{$line}";
continue;
}
$padding = 0;
$parts = explode(' ', $line, 2);
// invalid tag? (should we include it as an empty array?)
if(!isset($parts[1]))
continue;
$tag = substr($parts[0], 1);
$line = ltrim($parts[1]);
// tags that have a single component (eg. link, license, author, throws...);
// note that @throws may have 2 components, however most people use it like "@throws ExceptionClass if whatever...",
// which, if broken into two values, leads to an inconsistent description sentence
if(!in_array($tag, array('global', 'param', 'return', 'var'))){
$tags[$tag][] = $line;
end($tags[$tag]);
$pointer = &$tags[$tag][key($tags[$tag])];
continue;
}
// tags with 2 or 3 components (var, param, return);
$parts = explode(' ', $line, 2);
$parts[1] = isset($parts[1]) ? ltrim($parts[1]) : null;
$lastIdx = 1;
// expecting 3 components on the 'param' tag: type varName varDescription
if($tag === 'param'){
$lastIdx = 2;
if(in_array($parts[1][0], array('&', '$'), true)){
$line = ltrim(array_pop($parts));
$parts = array_merge($parts, explode(' ', $line, 2));
$parts[2] = isset($parts[2]) ? ltrim($parts[2]) : null;
}else{
$parts[2] = $parts[1];
$parts[1] = null;
}
}
$tags[$tag][] = $parts;
end($tags[$tag]);
$pointer = &$tags[$tag][key($tags[$tag])][$lastIdx];
}
// split title from the description texts at the nearest 2x new-line combination
// (note: loose check because 0 isn't valid as well)
if(strpos($description, "\n\n")){
list($title, $description) = explode("\n\n", $description, 2);
// if we don't have 2 new lines, try to extract first sentence
}else{
// in order for a sentence to be considered valid,
// the next one must start with an uppercase letter
$sentences = preg_split('/(?<=[.?!])\s+(?=[A-Z])/', $description, 2, PREG_SPLIT_NO_EMPTY);
// failed to detect a second sentence? then assume there's only title and no description text
$title = isset($sentences[0]) ? $sentences[0] : $description;
$description = isset($sentences[1]) ? $sentences[1] : '';
}
$title = ltrim($title);
$description = ltrim($description);
$data = compact('title', 'description', 'tags');
if(!array_filter($data))
return null;
if($key !== null)
return isset($data[$key]) ? $data[$key] : null;
return $data;
}
/**
* Split a regex into its components
*
* Based on "Regex Colorizer" by Steven Levithan (this is a translation from javascript)
*
* @link https://github.com/slevithan/regex-colorizer
* @link https://github.com/symfony/Finder/blob/master/Expression/Regex.php#L64-74
* @param string $pattern
* @return array
*/
public static function splitRegex($pattern){
// detection attempt code from the Symfony Finder component
$maybeValid = false;
if(preg_match('/^(.{3,}?)([imsxuADU]*)$/', $pattern, $m)) {
$start = substr($m[1], 0, 1);
$end = substr($m[1], -1);
if(($start === $end && !preg_match('/[*?[:alnum:] \\\\]/', $start)) || ($start === '{' && $end === '}'))
$maybeValid = true;
}
if(!$maybeValid)
throw new \Exception('Pattern does not appear to be a valid PHP regex');
$output = array();
$capturingGroupCount = 0;
$groupStyleDepth = 0;
$openGroups = array();
$lastIsQuant = false;
$lastType = 1; // 1 = none; 2 = alternator
$lastStyle = null;
preg_match_all('/\[\^?]?(?:[^\\\\\]]+|\\\\[\S\s]?)*]?|\\\\(?:0(?:[0-3][0-7]{0,2}|[4-7][0-7]?)?|[1-9][0-9]*|x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4}|c[A-Za-z]|[\S\s]?)|\((?:\?[:=!]?)?|(?:[?*+]|\{[0-9]+(?:,[0-9]*)?\})\??|[^.?*+^${[()|\\\\]+|./', $pattern, $matches);
$matches = $matches[0];
$getTokenCharCode = function($token){
if(strlen($token) > 1 && $token[0] === '\\'){
$t1 = substr($token, 1);
if(preg_match('/^c[A-Za-z]$/', $t1))
return strpos("ABCDEFGHIJKLMNOPQRSTUVWXYZ", strtoupper($t1[1])) + 1;
if(preg_match('/^(?:x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4})$/', $t1))
return intval(substr($t1, 1), 16);
if(preg_match('/^(?:[0-3][0-7]{0,2}|[4-7][0-7]?)$/', $t1))
return intval($t1, 8);
$len = strlen($t1);
if($len === 1 && strpos('cuxDdSsWw', $t1) !== false)
return null;
if($len === 1){
switch ($t1) {
case 'b': return 8;
case 'f': return 12;
case 'n': return 10;
case 'r': return 13;
case 't': return 9;
case 'v': return 11;
default: return $t1[0];
}
}
}
return ($token !== '\\') ? $token[0] : null;
};
foreach($matches as $m){
if($m[0] === '['){
$lastCC = null;
$cLastRangeable = false;
$cLastType = 0; // 0 = none; 1 = range hyphen; 2 = short class
preg_match('/^(\[\^?)(]?(?:[^\\\\\]]+|\\\\[\S\s]?)*)(]?)$/', $m, $parts);
array_shift($parts);
list($opening, $content, $closing) = $parts;
if(!$closing)
throw new \Exception('Unclosed character class');
preg_match_all('/[^\\\\-]+|-|\\\\(?:[0-3][0-7]{0,2}|[4-7][0-7]?|x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4}|c[A-Za-z]|[\S\s]?)/', $content, $ccTokens);
$ccTokens = $ccTokens[0];
$ccTokenCount = count($ccTokens);
$output[] = array('chr' => $opening);
foreach($ccTokens as $i => $cm) {
if($cm[0] === '\\'){
if(preg_match('/^\\\\[cux]$/', $cm))
throw new \Exception('Incomplete regex token');
if(preg_match('/^\\\\[dsw]$/i', $cm)) {
$output[] = array('chr-meta' => $cm);
$cLastRangeable = ($cLastType !== 1);
$cLastType = 2;
}elseif($cm === '\\'){
throw new \Exception('Incomplete regex token');
}else{
$output[] = array('chr-meta' => $cm);
$cLastRangeable = $cLastType !== 1;
$lastCC = $getTokenCharCode($cm);
}
}elseif($cm === '-'){
if($cLastRangeable){
$nextToken = ($i + 1 < $ccTokenCount) ? $ccTokens[$i + 1] : false;
if($nextToken){
$nextTokenCharCode = $getTokenCharCode($nextToken[0]);
if((!is_null($nextTokenCharCode) && $lastCC > $nextTokenCharCode) || $cLastType === 2 || preg_match('/^\\\\[dsw]$/i', $nextToken[0]))
throw new \Exception('Reversed or invalid range');
$output[] = array('chr-range' => '-');
$cLastRangeable = false;
$cLastType = 1;
}else{
$output[] = $closing ? array('chr' => '-') : array('chr-range' => '-');
}
}else{
$output[] = array('chr' => '-');
$cLastRangeable = ($cLastType !== 1);
}
}else{
$output[] = array('chr' => $cm);
$cLastRangeable = strlen($cm) > 1 || ($cLastType !== 1);
$lastCC = $cm[strlen($cm) - 1];
}
}
$output[] = array('chr' => $closing);
$lastIsQuant = true;
}elseif($m[0] === '('){
if(strlen($m) === 2)
throw new \Exception('Invalid or unsupported group type');
if(strlen($m) === 1)
$capturingGroupCount++;
$groupStyleDepth = ($groupStyleDepth !== 5) ? $groupStyleDepth + 1 : 1;
$openGroups[] = $m; // opening
$lastIsQuant = false;
$output[] = array("g{$groupStyleDepth}" => $m);
}elseif($m[0] === ')'){
if(!count($openGroups))
throw new \Exception('No matching opening parenthesis');
$output[] = array('g' . $groupStyleDepth => ')');
$prevGroup = $openGroups[count($openGroups) - 1];
$prevGroup = isset($prevGroup[2]) ? $prevGroup[2] : '';
$lastIsQuant = !preg_match('/^[=!]/', $prevGroup);
$lastStyle = "g{$groupStyleDepth}";
$lastType = 0;
$groupStyleDepth = ($groupStyleDepth !== 1) ? $groupStyleDepth - 1 : 5;
array_pop($openGroups);
continue;
}elseif($m[0] === '\\'){
if(isset($m[1]) && preg_match('/^[1-9]/', $m[1])){
$nonBackrefDigits = '';
$num = substr(+$m, 1);
while($num > $capturingGroupCount){
preg_match('/[0-9]$/', $num, $digits);
$nonBackrefDigits = $digits[0] . $nonBackrefDigits;
$num = floor($num / 10);
}
if($num > 0){
$output[] = array('meta' => "\\{$num}", 'text' => $nonBackrefDigits);
}else{
preg_match('/^\\\\([0-3][0-7]{0,2}|[4-7][0-7]?|[89])([0-9]*)/', $m, $pts);
$output[] = array('meta' => '\\' . $pts[1], 'text' => $pts[2]);
}
$lastIsQuant = true;
}elseif(isset($m[1]) && preg_match('/^[0bBcdDfnrsStuvwWx]/', $m[1])){
if(preg_match('/^\\\\[cux]$/', $m))
throw new \Exception('Incomplete regex token');
$output[] = array('meta' => $m);
$lastIsQuant = (strpos('bB', $m[1]) === false);
}elseif($m === '\\'){
throw new \Exception('Incomplete regex token');
}else{
$output[] = array('text' => $m);
$lastIsQuant = true;
}
}elseif(preg_match('/^(?:[?*+]|\{[0-9]+(?:,[0-9]*)?\})\??$/', $m)){
if(!$lastIsQuant)
throw new \Exception('Quantifiers must be preceded by a token that can be repeated');
preg_match('/^\{([0-9]+)(?:,([0-9]*))?/', $m, $interval);
if($interval && (+$interval[1] > 65535 || (isset($interval[2]) && (+$interval[2] > 65535))))
throw new \Exception('Interval quantifier cannot use value over 65,535');
if($interval && isset($interval[2]) && (+$interval[1] > +$interval[2]))
throw new \Exception('Interval quantifier range is reversed');
$output[] = array($lastStyle ? $lastStyle : 'meta' => $m);
$lastIsQuant = false;
}elseif($m === '|'){
if($lastType === 1 || ($lastType === 2 && !count($openGroups)))
throw new \Exception('Empty alternative effectively truncates the regex here');
$output[] = count($openGroups) ? array("g{$groupStyleDepth}" => '|') : array('meta' => '|');
$lastIsQuant = false;
$lastType = 2;
$lastStyle = '';
continue;
}elseif($m === '^' || $m === '$'){
$output[] = array('meta' => $m);
$lastIsQuant = false;
}elseif($m === '.'){
$output[] = array('meta' => '.');
$lastIsQuant = true;
}else{
$output[] = array('text' => $m);
$lastIsQuant = true;
}
$lastType = 0;
$lastStyle = '';
}
if($openGroups)
throw new \Exception('Unclosed grouping');
return $output;
}
/**
* Set or get configuration options
*
* @param string $key
* @param mixed|null $value
* @return mixed
*/
public static function config($key, $value = null){
if(!array_key_exists($key, static::$config))
throw new \Exception(sprintf('Unrecognized option: "%s". Valid options are: %s', $key, implode(', ', array_keys(static::$config))));
if($value === null)
return static::$config[$key];
if(is_array(static::$config[$key]))
return static::$config[$key] = (array)$value;
return static::$config[$key] = $value;
}
/**
* Get styles and javascript (only generated for the 1st call)
*
* @return string
*/
public static function getAssets(){
// tracks style/jscript inclusion state (html only)
static $didAssets = false;
// first call? include styles and javascript
if($didAssets)
return '';
ob_start();
if(static::$config['stylePath'] !== false){
?>
<style scoped>
<?php readfile(str_replace('{:dir}', __DIR__, static::$config['stylePath'])); ?>
</style>
<?php
}
if(static::$config['scriptPath'] !== false){
?>
<script>
<?php readfile(str_replace('{:dir}', __DIR__, static::$config['scriptPath'])); ?>
</script>
<?php
}
// normalize space and remove comments
$output = preg_replace('/\s+/', ' ', trim(ob_get_clean()));
$output = preg_replace('!/\*.*?\*/!s', '', $output);
$output = preg_replace('/\n\s*\n/', "\n", $output);
$didAssets = true;
return $output;
}
/**
* Total CPU time used by the class
*
* @param int precision
* @return double
*/
public static function getTime($precision = 4){
return round(static::$time, $precision);
}
/**
* Determines the input expression(s) passed to the shortcut function
*
* @param array &$options Optional, options to gather (from operators)
* @return array Array of string expressions
*/
public static function getInputExpressions(array &$options = null){
// used to determine the position of the current call,
// if more queries calls were made on the same line
static $lineInst = array();
// pull only basic info with php 5.3.6+ to save some memory
$trace = defined('DEBUG_BACKTRACE_IGNORE_ARGS') ? debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS) : debug_backtrace();
while($callee = array_pop($trace)){
// extract only the information we neeed
$callee = array_intersect_key($callee, array_fill_keys(array('file', 'function', 'line'), false));
extract($callee);
// skip, if the called function doesn't match the shortcut function name
if(!$function || !preg_grep("/{$function}/i" , static::$config['shortcutFunc']))
continue;
if(!$line || !$file)
return array();
$code = file($file);
$code = $code[$line - 1]; // multiline expressions not supported!
$instIndx = 0;
$tokens = token_get_all("<?php {$code}");
// locate the caller position in the line, and isolate argument tokens
foreach($tokens as $i => $token){
// match token with our shortcut function name
if(is_string($token) || ($token[0] !== T_STRING) || (strcasecmp($token[1], $function) !== 0))
continue;
// is this some method that happens to have the same name as the shortcut function?
if(isset($tokens[$i - 1]) && is_array($tokens[$i - 1]) && in_array($tokens[$i - 1][0], array(T_DOUBLE_COLON, T_OBJECT_OPERATOR), true))
continue;
// find argument definition start, just after '('
if(isset($tokens[$i + 1]) && ($tokens[$i + 1][0] === '(')){
$instIndx++;
if(!isset($lineInst[$line]))
$lineInst[$line] = 0;
if($instIndx <= $lineInst[$line])
continue;
$lineInst[$line]++;
// gather options
if($options !== null){
$j = $i - 1;
while(isset($tokens[$j]) && is_string($tokens[$j]) && in_array($tokens[$j], array('@', '+', '-', '!', '~')))
$options[] = $tokens[$j--];
}
$lvl = $index = $curlies = 0;
$expressions = array();
// get the expressions
foreach(array_slice($tokens, $i + 2) as $token){
if(is_array($token)){
if($token[0] !== T_COMMENT)
$expressions[$index][] = ($token[0] !== T_WHITESPACE) ? $token[1] : ' ';
continue;
}
if($token === '{')
$curlies++;
if($token === '}')
$curlies--;
if($token === '(')
$lvl++;
if($token === ')')
$lvl--;
// assume next argument if a comma was encountered,
// and we're not insde a curly bracket or inner parentheses
if(($curlies < 1) && ($lvl === 0) && ($token === ',')){
$index++;
continue;
}
// negative parentheses count means we reached the end of argument definitions
if($lvl < 0){
foreach($expressions as &$expression)
$expression = trim(implode('', $expression));
return $expressions;
}
$expressions[$index][] = $token;
}
break;
}
}
}
}
/**
* Generates the output in plain text format
*
* @param string $element
* @param string|null $arg1
* @param string|null $arg2
* @param string|array|null $meta
* @return string
*/
protected function toText($element, $arg1 = null, $arg2 = null, $meta = null){
switch($element){
case 'sep':
return $arg1;
case 'text':
if($arg2 === null)
$arg2 = $arg1;
if($arg1 === 'specialString'){
$arg2 = strtr($arg2, array(
"\r" => '\r', // carriage return
"\t" => '\t', // horizontal tab
"\n" => '\n', // linefeed (new line)
"\v" => '\v', // vertical tab
"\e" => '\e', // escape
"\f" => '\f', // form feed
"\0" => '\0',
));
}
$formatMap = array(
'string' => '%3$s "%2$s"',
'integer' => 'int(%2$s)',
'double' => 'double(%2$s)',
'true' => 'bool(%2$s)',
'false' => 'bool(%2$s)',
'key' => '[%2$s]',
);
if(!is_string($meta))
$meta = '';
return isset($formatMap[$arg1]) ? sprintf($formatMap[$arg1], $arg1, $arg2, $meta) : $arg2;
case 'match':
return ($arg1 !== 'regex') ? "\n~~ {$arg1}: {$arg2}" : '';
case 'contain':
return ($arg1 !== 'regex') ? $arg2 : '';
case 'link':
return $arg1;
case 'group':
$prefix = ($arg2 !== null) ? $arg2 : '';
if($arg1){
$arg1 = $arg1 . "\n";
$prefix .= " \xe2\x96\xbc";
}
return "({$prefix}{$arg1})";
case 'section':
$output = '';
if($arg2 !== null)
$output .= "\n\n " . $arg2 . "\n " . str_repeat('-', static::strLen($arg2));
$lengths = array();
// determine maximum column width
foreach($arg1 as $item)
foreach($item as $colIdx => $c)
if(!isset($lengths[$colIdx]) || $lengths[$colIdx] < static::strLen($c))
$lengths[$colIdx] = static::strLen($c);
foreach($arg1 as $item){
$lastColIdx = count($item) - 1;
$padLen = 0;
$output .= "\n ";
foreach($item as $colIdx => $c){
// skip empty columns
if($lengths[$colIdx] < 1)
continue;
if($colIdx < $lastColIdx){
$output .= static::strPad($c, $lengths[$colIdx]) . ' ';
$padLen += $lengths[$colIdx] + 1;
continue;
}