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<?php
namespace Tapestry\Entities;
class Url
{
/**
* @var Configuration
*/
private $configuration;
/**
* @var string
*/
private $siteUrl;
/**
* Site constructor.
*
* @param Configuration $configuration
*/
public function __construct(Configuration $configuration)
{
$this->configuration = $configuration;
}
public function parse($uri = '')
{
$this->loadSiteUrl();
$uri = $this->cleanUri($uri);
return $this->siteUrl.'/'.$this->encode($uri);
}
private function loadSiteUrl()
{
if (! is_null($this->siteUrl)) {
return $this->siteUrl;
}
if (! $this->siteUrl = $this->configuration->get('site.url')) {
throw new \Exception('The site url is not set in your site configuration.');
}
$this->siteUrl = $this->cleanUri($this->siteUrl);
return $this->siteUrl;
}
private function cleanUri($text)
{
$text = trim($text);
if (substr($text, 0, 1) === '/') {
$text = substr($text, 1);
}
return ($text === false) ? '' : $text;
}
/**
* @param string $uri
* @return array
*/
private function encode($uri = '')
{
$parts = explode('/', $uri);
foreach ($parts as &$part) {
if (strpos($part, 'index') !== false) {
$part = null;
continue;
}
$part = $this->encodePart($part);
}
unset($part);
$parts = array_filter($parts, function ($value) {
return ! is_null($value);
});
// If the last uri part doesn't contain a file name e.g. index.html or readme.txt
$e = end($parts);
if (
strlen($e) > 0 &&
strpos($e, '?') === false &&
strpos($e, '=') === false &&
strpos($e, '&') === false &&
strpos($e, '#') === false &&
strpos($e, '.') === false
) {
array_push($parts, '');
}
return trim(implode('/', $parts));
}
/**
* Ensures that uri parts containing ? or # get encoded correctly.
*
* @param string $part
* @return string
*/
private function encodePart($part)
{
if (strpos($part, '?') !== false) {
if (strpos($part, '?') === 0) {
$output = '?';
$part = substr($part, 1);
} else {
$pe = explode('?', $part);
$output = $pe[0].'/?';
$part = $pe[1];
unset($pe);
}
if (strpos($part, '&')) {
$parts = explode('&', $part);
} else {
$parts = [$part];
}
foreach ($parts as &$p) {
if (strpos($p, '=') !== false) {
$pe = explode('=', $p);
$p = $pe[0].'='.urlencode($pe[1]);
}
}
unset($p, $pe);
$output .= implode('&', $parts);
return $output;
}
if (strpos($part, '#') !== false) {
if (strpos($part, '#') === 0) {
if (substr($part, 1, 1) === '!') {
return '#!'.rawurlencode(substr($part, 2));
}
return '#'.rawurlencode(substr($part, 1));
}
$pe = explode('#', $part);
if (substr($pe[1], 0, 1) === '!') {
return $pe[0].'/#!'.rawurlencode(substr($pe[1], 1));
}
return $pe[0].'/#'.rawurlencode($pe[1]);
}
return rawurlencode($part);
}
}