Initial commit

2023-11-25 20:09:22 +01:00
commit 797205e7c5
10 changed files with 284 additions and 0 deletions
--- a/www/format.inc
+++ b/www/format.inc
@ -0,0 +1,46 @@
+<?php
+
+function get_fmt(): string {
+    $fmt = _get_fmt();
+    if ($fmt === 'ascii') {
+        header('Status: 303');
+        header('Location: ?format=text');
+        exit();
+    } else if ($fmt !== 'json' && $fmt !== 'html' && $fmt !== 'text') {
+        header('Status: 300');
+        header('Content-Type: text/html; charset=UTF-8');
+        echo "<!DOCTYPE html><html><head></head><body>\n<a href='?format=html'>HTML</a><br/>\n<a href='?format=json'>JSON</a><br/>\n<a href='?format=text'>Text</a>\n</body></html>\n";
+        exit();
+    }
+    return $fmt;
+}
+
+function _get_fmt(): string {
+    if (!empty($_GET['format'])) return $_GET['format'];
+
+    $fmts = [];
+    foreach (explode(',', $_SERVER['HTTP_ACCEPT']) as $acc) {
+        $acc = explode(';', trim($acc));
+        $q = 1;
+        if (sizeof($acc) > 1) {
+            $qv = trim($acc[1]);
+            if (str_starts_with($qv, 'q=')) {
+                $q = (double)substr($qv, 2);
+            }
+        }
+        $fmts[trim($acc[0])] = $q;
+    }
+    arsort($fmts, SORT_NUMERIC);
+    array_filter($fmts, function($k) {
+        return str_contains($k, '/json') || $k === 'text/html' || $k === 'text/plain' || str_contains($k, 'text/*');
+    });
+
+    $type = sizeof($fmts) > 0 ? array_key_first($fmts) : null;
+    if (str_contains($type, '/json')) {
+        return 'json';
+    } else if ($type === 'text/html') {
+        return 'html';
+    } else {
+        return 'text';
+    }
+}