1 files changed, 95 insertions, 0 deletions
diff --git a/src/lib/html.php b/src/lib/html.php
new file mode 100644
index 0000000..fac7a94
--- /dev/null
+++ b/src/lib/html.php
@@ -0,0 +1,95 @@
+<?php
+/// CRIMSON --- A simple PHP framework.
+/// Copyright © 2024 Freya Murphy <contact@freyacat.org>
+///
+/// This file is part of CRIMSON.
+///
+/// CRIMSON is free software; you can redistribute it and/or modify it
+/// under the terms of the GNU General Public License as published by
+/// the Free Software Foundation; either version 3 of the License, or (at
+/// your option) any later version.
+///
+/// CRIMSON is distributed in the hope that it will be useful, but
+/// WITHOUT ANY WARRANTY; without even the implied warranty of
+/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+/// GNU General Public License for more details.
+///
+/// You should have received a copy of the GNU General Public License
+/// along with CRIMSON. If not, see <http://www.gnu.org/licenses/>.
+
+function esc(string $data, bool $string_esc = FALSE): string {
+	$flags = ENT_SUBSTITUTE | ENT_HTML401;
+	if ($string_esc)
+		$flags |= ENT_QUOTES;
+	return htmlspecialchars($data, $flags);
+}
+
+function status_code_msg(int $code): ?string {
+
+	static $status_code = array(
+		100 => "Continue",
+		101 => "Switching Protocols",
+		200 => "OK",
+		201 => "Created",
+		202 => "Accepted",
+		203 => "Non-Authoritative Information",
+		204 => "No Content",
+		205 => "Reset Content",
+		206 => "Partial Content",
+		300 => "Multiple Choices",
+		301 => "Moved Permanently",
+		302 => "Found",
+		303 => "See Other",
+		304 => "Not Modified",
+		//305 => "Use Proxy",
+		//306 => "unused",
+		307 => "Temporary Redirect",
+		308 => "Permanent Redirect",
+		400 => "Bad Request",
+		401 => "Unauthorized",
+		402 => "Payment Required",
+		403 => "Forbidden",
+		404 => "Not Found",
+		405 => "Method Not Allowed",
+		406 => "Not Acceptable",
+		407 => "Proxy Authentication Required",
+		408 => "Request Timeout",
+		409 => "Conflict",
+		410 => "Gone",
+		411 => "Length Required",
+		412 => "Precondition Failed",
+		413 => "Content Too Large",
+		414 => "URI Too Long",
+		415 => "Unsupported Media Type",
+		416 => "Range Not Satisfiable",
+		417 => "Expectation Failed",
+		418 => "I'm a teapot",
+		421 => "Misdirected Request",
+		422 => "Unprocessable Content",
+		423 => "Locked",
+		424 => "Failed Dependency",
+		425 => "Too Early",
+		426 => "Upgrade Required",
+		428 => "Precondition Required",
+		429 => "Too Many Requests",
+		431 => "Request Header Fields Too Large",
+		451 => "Unavailable For Legal Reasons",
+		500 => "Internal Server Error",
+		501 => "Not Implemented",
+		502 => "Bad Gateway",
+		503 => "Service Unavailable",
+		504 => "Gateway Timeout",
+		505 => "HTTP Version Not Supported",
+		506 => "Variant Also Negotiates",
+		507 => "Insufficient Storage",
+		508 => "Loop Detected",
+		510 => "Not Extended",
+		511 => "Network Authentication Required",
+	);
+
+	return $status_code[$code] ?? NULL;
+}
+
+function is_valid_status_code(int $code): bool {
+	return is_string(status_code_msg($code));
+}