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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2015 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Formatter;
use Psy\Util\Docblock;
use Symfony\Component\Console\Formatter\OutputFormatter;
/**
* A pretty-printer for docblocks.
*/
class DocblockFormatter implements Formatter
{
private static $vectorParamTemplates = array(
'type' => 'info',
'var' => 'strong',
);
/**
* Format a docblock.
*
* @param \Reflector $reflector
*
* @return string Formatted docblock
*/
public static function format(\Reflector $reflector)
{
$docblock = new Docblock($reflector);
$chunks = array();
if (!empty($docblock->desc)) {
$chunks[] = '<comment>Description:</comment>';
$chunks[] = self::indent(OutputFormatter::escape($docblock->desc), ' ');
$chunks[] = '';
}
if (!empty($docblock->tags)) {
foreach ($docblock::$vectors as $name => $vector) {
if (isset($docblock->tags[$name])) {
$chunks[] = sprintf('<comment>%s:</comment>', self::inflect($name));
$chunks[] = self::formatVector($vector, $docblock->tags[$name]);
$chunks[] = '';
}
}
$tags = self::formatTags(array_keys($docblock::$vectors), $docblock->tags);
if (!empty($tags)) {
$chunks[] = $tags;
$chunks[] = '';
}
}
return rtrim(implode("\n", $chunks));
}
/**
* Format a docblock vector, for example, `@throws`, `@param`, or `@return`.
*
* @see DocBlock::$vectors
*
* @param array $vector
* @param array $lines
*
* @return string
*/
private static function formatVector(array $vector, array $lines)
{
$template = array(' ');
foreach ($vector as $type) {
$max = 0;
foreach ($lines as $line) {
$chunk = $line[$type];
$cur = empty($chunk) ? 0 : strlen($chunk) + 1;
if ($cur > $max) {
$max = $cur;
}
}
$template[] = self::getVectorParamTemplate($type, $max);
}
$template = implode(' ', $template);
return implode("\n", array_map(function ($line) use ($template) {
$escaped = array_map(array('Symfony\Component\Console\Formatter\OutputFormatter', 'escape'), $line);
return rtrim(vsprintf($template, $escaped));
}, $lines));
}
/**
* Format docblock tags.
*
* @param array $skip Tags to exclude
* @param array $tags Tags to format
*
* @return string formatted tags
*/
private static function formatTags(array $skip, array $tags)
{
$chunks = array();
foreach ($tags as $name => $values) {
if (in_array($name, $skip)) {
continue;
}
foreach ($values as $value) {
$chunks[] = sprintf('<comment>%s%s</comment> %s', self::inflect($name), empty($value) ? '' : ':', OutputFormatter::escape($value));
}
$chunks[] = '';
}
return implode("\n", $chunks);
}
/**
* Get a docblock vector template.
*
* @param string $type Vector type
* @param int $max Pad width
*
* @return string
*/
private static function getVectorParamTemplate($type, $max)
{
if (!isset(self::$vectorParamTemplates[$type])) {
return sprintf('%%-%ds', $max);
}
return sprintf('<%s>%%-%ds</%s>', self::$vectorParamTemplates[$type], $max, self::$vectorParamTemplates[$type]);
}
/**
* Indent a string.
*
* @param string $text String to indent
* @param string $indent (default: ' ')
*
* @return string
*/
private static function indent($text, $indent = ' ')
{
return $indent . str_replace("\n", "\n" . $indent, $text);
}
/**
* Convert underscored or whitespace separated words into sentence case.
*
* @param string $text
*
* @return string
*/
private static function inflect($text)
{
$words = trim(preg_replace('/[\s_-]+/', ' ', preg_replace('/([a-z])([A-Z])/', '$1 $2', $text)));
return implode(' ', array_map('ucfirst', explode(' ', $words)));
}
}