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b3cda72e NL |
1 | <?php |
2 | ||
3 | namespace PicoFarad\Router; | |
4 | ||
5 | // Load controllers: bootstrap('controllers', 'controller1', 'controller2') | |
6 | function bootstrap() | |
7 | { | |
8 | $files = \func_get_args(); | |
9 | $base_path = array_shift($files); | |
10 | ||
11 | foreach ($files as $file) { | |
12 | require $base_path.'/'.$file.'.php'; | |
13 | } | |
14 | } | |
15 | ||
16 | // Execute a callback before each action | |
17 | function before($value = null) | |
18 | { | |
19 | static $before_callback = null; | |
20 | ||
21 | if (is_callable($value)) { | |
22 | $before_callback = $value; | |
23 | } | |
24 | else if (is_callable($before_callback)) { | |
25 | $before_callback($value); | |
26 | } | |
27 | } | |
28 | ||
29 | // Execute a callback before a specific action | |
30 | function before_action($name, $value = null) | |
31 | { | |
32 | static $callbacks = array(); | |
33 | ||
34 | if (is_callable($value)) { | |
35 | $callbacks[$name] = $value; | |
36 | } | |
37 | else if (isset($callbacks[$name]) && is_callable($callbacks[$name])) { | |
38 | $callbacks[$name]($value); | |
39 | } | |
40 | } | |
41 | ||
42 | // Execute an action | |
43 | function action($name, \Closure $callback) | |
44 | { | |
45 | $handler = isset($_GET['action']) ? $_GET['action'] : 'default'; | |
46 | ||
47 | if ($handler === $name) { | |
48 | before($name); | |
49 | before_action($name); | |
50 | $callback(); | |
51 | } | |
52 | } | |
53 | ||
54 | // Execute an action only for POST requests | |
55 | function post_action($name, \Closure $callback) | |
56 | { | |
57 | if ($_SERVER['REQUEST_METHOD'] === 'POST') { | |
58 | action($name, $callback); | |
59 | } | |
60 | } | |
61 | ||
62 | // Execute an action only for GET requests | |
63 | function get_action($name, \Closure $callback) | |
64 | { | |
65 | if ($_SERVER['REQUEST_METHOD'] === 'GET') { | |
66 | action($name, $callback); | |
67 | } | |
68 | } | |
69 | ||
70 | // Run when no action have been executed before | |
71 | function notfound(\Closure $callback) | |
72 | { | |
73 | before('notfound'); | |
74 | before_action('notfound'); | |
75 | $callback(); | |
76 | } | |
77 | ||
78 | // Match a request like this one: GET /myhandler | |
79 | function get($url, \Closure $callback) | |
80 | { | |
81 | find_route('GET', $url, $callback); | |
82 | } | |
83 | ||
84 | // Match a request like this one: POST /myhandler | |
85 | function post($url, \Closure $callback) | |
86 | { | |
87 | find_route('POST', $url, $callback); | |
88 | } | |
89 | ||
90 | // Match a request like this one: PUT /myhandler | |
91 | function put($url, \Closure $callback) | |
92 | { | |
93 | find_route('PUT', $url, $callback); | |
94 | } | |
95 | ||
96 | // Match a request like this one: DELETE /myhandler | |
97 | function delete($url, \Closure $callback) | |
98 | { | |
99 | find_route('DELETE', $url, $callback); | |
100 | } | |
101 | ||
102 | // Define which callback to execute according to the URL and the HTTP verb | |
103 | function find_route($method, $route, \Closure $callback) | |
104 | { | |
105 | if ($_SERVER['REQUEST_METHOD'] === $method) { | |
106 | ||
107 | if (! empty($_SERVER['QUERY_STRING'])) { | |
108 | $url = substr($_SERVER['REQUEST_URI'], 0, -(strlen($_SERVER['QUERY_STRING']) + 1)); | |
109 | } | |
110 | else { | |
111 | $url = $_SERVER['REQUEST_URI']; | |
112 | } | |
113 | ||
114 | $params = array(); | |
115 | ||
116 | if (url_match($route, $url, $params)) { | |
117 | ||
118 | before($route); | |
119 | \call_user_func_array($callback, $params); | |
120 | exit; | |
121 | } | |
122 | } | |
123 | } | |
124 | ||
125 | // Parse url and find matches | |
126 | function url_match($route_uri, $request_uri, array &$params) | |
127 | { | |
128 | if ($request_uri === $route_uri) return true; | |
129 | if ($route_uri === '/' || $request_uri === '/') return false; | |
130 | ||
131 | $route_uri = trim($route_uri, '/'); | |
132 | $request_uri = trim($request_uri, '/'); | |
133 | ||
134 | $route_items = explode('/', $route_uri); | |
135 | $request_items = explode('/', $request_uri); | |
136 | $nb_route_items = count($route_items); | |
137 | ||
138 | if ($nb_route_items === count($request_items)) { | |
139 | ||
140 | for ($i = 0; $i < $nb_route_items; ++$i) { | |
141 | ||
142 | if ($route_items[$i][0] === ':') { | |
143 | ||
144 | $params[substr($route_items[$i], 1)] = $request_items[$i]; | |
145 | } | |
146 | else if ($route_items[$i] !== $request_items[$i]) { | |
147 | ||
148 | $params = array(); | |
149 | return false; | |
150 | } | |
151 | } | |
152 | ||
153 | return true; | |
154 | } | |
155 | ||
156 | return false; | |
157 | } |