2023-12-03 22:10:18 +04:00
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<?php
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namespace nur\v\base;
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use nur\A;
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use nur\b\ValueException;
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use nur\func;
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use nur\md;
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use nur\str;
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use nur\v\html5\Html5BasicErrorPage;
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use nur\v\model\IPage;
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use nur\v\model\IRouteManager;
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class RouteManager implements IRouteManager {
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const DEFAULT_PAGE = Html5BasicErrorPage::class;
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function __construct(?array $routes=null) {
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$this->eroutes = [];
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$this->proutes = [];
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if ($routes !== null) $this->addRoute(...$routes);
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}
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private static function check_page_type($page): array {
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if (is_array($page) && array_key_exists(0, $page) && is_string($page[0])) {
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return [$page[0], $page];
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} elseif ($page instanceof IPage) {
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return [$page, $page];
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} elseif (is_string($page)) {
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return [$page, [$page]];
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}
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throw ValueException::unexpected_type(IPage::class, $page);
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}
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/** @param $args IPage|array */
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private static function get_page($args): IPage {
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if ($args instanceof IPage) return $args;
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else return func::cons(...$args);
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}
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/** @var IPage|array */
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protected $errorPage;
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function setErrorPage($page) {
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$this->errorPage = self::check_page_type($page)[1];
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}
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/**
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* @var array routes pour des chemins exacts. elles ont la priorité sur les
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* préfixes
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*/
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protected $eroutes;
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/** @var array routes pour des préfixes de chemin */
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protected $proutes;
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2024-10-04 14:22:43 +04:00
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private static function get_package(?string $class): ?string {
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2023-12-03 22:10:18 +04:00
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if ($class === null) return null;
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str::del_prefix($class, "\\");
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if (($pos = strrpos($class, "\\")) === false) return "";
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else return substr($class, 0, $pos);
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}
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function addRoute(array ...$routes): void {
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$eroutes =& $this->eroutes;
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$proutes =& $this->proutes;
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foreach ($routes as $route) {
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md::ensure_schema($route, self::ROUTE_SCHEMA, null, false);
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str::del_prefix($route["path"], "/");
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$path = $route["path"];
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[$page, $cons_args] = self::check_page_type($route["page"]);
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$route["page"] = $page;
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$route["cons_args"] = $cons_args;
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$route["package"] = self::get_package($route["page"]);
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A::ensure_array($route["aliases"]);
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switch ($route["mode"]) {
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case self::MODE_EXACT:
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# route exacte
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$eroutes[$path] = $route;
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break;
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case self::MODE_PREFIX:
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case self::MODE_PACKAGE:
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case self::MODE_PACKAGE2:
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if ($path && !str::ends_with("/", $path)) {
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# chemin ne se terminant pas par '/': faire aussi la correspondance
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# exacte
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$eroutes[$path] = $route;
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}
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$proutes[$page] = $route;
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break;
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}
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# faire les aliases
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foreach ($route["aliases"] as $alias) {
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str::del_prefix($alias, "/");
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$route["path"] = $alias;
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$route["mode"] = self::MODE_EXACT;
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$eroutes[$alias] = $route;
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}
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}
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}
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/**
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* Calculer $page à partir de $path avec les règles suivantes:
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* - supprimer le suffixe '.php'
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* - remplacer '/' et '--' par '\\'
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* - pour chaque élément, transformer camel-case en CamelCase
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* - rajouter le suffixe Page
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*
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* voici comment est calculée la valeur de départ:
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* - si $path se termine par '.php', prendre le chemin SANS le suffixe '.php'
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* - si $path est la forme '*.php/SUFFIX', prendre SUFFIX comme valeur de
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* départ
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*/
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private function computePackagePage(?string $path, string $package): string {
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str::del_prefix($path, "/");
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if (str::ends_with(".php", $path)) {
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str::del_suffix($path, ".php");
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} elseif (($pos = strpos($path, ".php/")) !== false) {
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$path = substr($path, $pos + 5);
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}
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$path = str_replace("--", "/", $path);
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$parts = explode("/", "$path-page");
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$last = count($parts) - 1;
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for ($i = 0; $i <= $last; $i++) {
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$parts[$i] = str::us2camel($parts[$i]);
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if ($i == $last) $parts[$i] = str::upper1($parts[$i]);
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}
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str::add_suffix($package, "\\", true);
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return $package.implode("\\", $parts);
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}
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/**
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* sur la base des routes définies, résoudre la classe à instancier pour
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* traiter le chemin spécifié
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*
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* @return IPage|array
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*/
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function resolvePage(?string $path) {
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if ($path === null) $path = $_SERVER["PHP_SELF"];
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str::del_prefix($path, "/");
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# essayer d'abord des routes exactes
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$route = A::get($this->eroutes, $path);
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if ($route !== null) return $route["cons_args"];
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# puis, essayer dans l'ordre les routes basées sur des préfixes
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foreach ($this->proutes as $route) {
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switch ($route["mode"]) {
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case self::MODE_PREFIX:
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$prefix = $route["path"];
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if ($prefix) str::add_suffix($prefix, "/", true);
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if (str::starts_with($prefix, $path)) return $route["cons_args"];
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break;
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}
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}
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# chemin non trouvé, essayer de calculer à partir de $path
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$page = false;
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foreach ($this->proutes as $route) {
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switch ($route["mode"]) {
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case self::MODE_PACKAGE:
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case self::MODE_PACKAGE2:
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$prefix = $route["path"];
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if ($prefix) str::add_suffix($prefix, "/", true);
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if (str::starts_with($prefix, $path)) {
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$page = $this->computePackagePage(
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str::without_prefix($prefix, $path),
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$route["package"]);
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if (class_exists($page)) return [$page];
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}
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break;
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}
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}
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# sinon prendre la page par défaut (qui est en fait la page d'erreur)
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$error = $this->errorPage;
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if ($error === null) $error = [static::DEFAULT_PAGE];
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if (is_array($error)) {
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if ($page) {
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A::merge($error, ["$path: unable to find page class $page"]);
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} else {
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A::merge($error, ["$path: unable to find page class"]);
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}
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}
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return $error;
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}
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function getPage(?string $path=null): IPage {
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$page = $this->resolvePage($path);
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if ($page instanceof IPage) return $page;
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else return func::cons(...$page);
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}
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/**
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* Calculer $path à partir de $page avec les règles suivantes:
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* - supprimer le suffixe Page
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* - pour chaque élément, transformer CamelCase en camel-case
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* - remplacer '\\' par '/'
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* - rajouter le suffixe '.php'
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*
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* NB: cette fonction n'est pas la symétrique de {@link computePackagePage()}.
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* par exemple:
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* - computePackagePage() transforme 'p--do-it.php' en 'p\\DoItPage'
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* - computePackagePath() transforme 'p\\DoItPage' en 'p/do-it.php'
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* pour les cas particulier, il vaut donc mieux faire des routes exactes
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*/
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private function computePackagePath(string $prefix, string $page, string $package, string $sep="/"): string {
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# préfixe
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str::add_suffix($prefix, "/", true);
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# classe
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if ($package) str::del_prefix($page, "$package\\");
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str::del_suffix($page, "Page");
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$parts = explode("\\", $page);
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$last = count($parts) - 1;
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for ($i = 0; $i <= $last; $i++) {
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if ($i == $last) $parts[$i] = str::lower1($parts[$i]);
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$parts[$i] = str::camel2us($parts[$i], false, "-");
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}
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$path = implode($sep, $parts);
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return "$prefix$path.php";
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}
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/**
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* obtenir le chemin correspondant à l'instance de {@link IPage} ou à la
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* classe spécifiée.
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*
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* @param string|IPage $page instance ou classe de la page dont on veut le
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* chemin depuis la racine de l'application
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*/
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function getPath($page): string {
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if ($page instanceof IPage) {
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$page = get_class($page);
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} elseif (!is_string($page)) {
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throw ValueException::unexpected_type(["string", IPage::class], $page);
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}
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# d'abord les chemins exacts
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foreach ($this->eroutes as $route) {
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if ($page === $route["page"]) return $route["path"];
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}
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# puis les préfixes
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foreach ($this->proutes as $route) {
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switch ($route["mode"]) {
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case self::MODE_PREFIX:
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if ($page === $route["page"]) return $route["path"];
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break;
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}
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}
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# puis les packages
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foreach ($this->proutes as $route) {
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$mode = $route["mode"];
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switch ($mode) {
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case self::MODE_PACKAGE:
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case self::MODE_PACKAGE2:
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$package = $route["package"];
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if (str::starts_with($package, $page)) {
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if ($mode == self::MODE_PACKAGE) $sep = "/";
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else $sep = "--";
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return $this->computePackagePath($route["path"], $page, $package, $sep);
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}
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break;
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}
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}
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# pas trouvé
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throw new ValueException(": $page: unable to find path");
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}
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}
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