--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/zint/backend/iso3166.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,89 @@
+/*
+ * ISO 3166 country codes generated by "backend/tools/gen_iso3166_h.php"
+ */
+/*
+    libzint - the open source barcode library
+    Copyright (C) 2021-2022 Robin Stuart <rstuart114@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+    3. Neither the name of the project nor the names of its contributors
+       may be used to endorse or promote products derived from this software
+       without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+ */
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#ifndef Z_ISO3166_H
+#define Z_ISO3166_H
+
+/* Whether ISO 3166-1 numeric */
+static int iso3166_numeric(int cc) {
+    static const unsigned char codes[112] = {
+        0x10, 0x15, 0x11, 0x91, 0x11, 0x11, 0x1D, 0x11,
+        0x51, 0x15, 0x50, 0x14, 0x11, 0x11, 0x11, 0x11,
+        0x10, 0x11, 0x11, 0x51, 0x44, 0xC4, 0x14, 0x91,
+        0x11, 0x18, 0x51, 0x44, 0x84, 0xC7, 0x44, 0x45,
+        0x54, 0x54, 0x18, 0x00, 0x11, 0x11, 0x11, 0x11,
+        0x11, 0x51, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+        0x11, 0x41, 0x11, 0x45, 0x46, 0x54, 0x44, 0x45,
+        0x44, 0x44, 0x44, 0x44, 0x11, 0x10, 0x1D, 0x11,
+        0x11, 0x11, 0xE9, 0x10, 0x10, 0x44, 0x44, 0x44,
+        0xB4, 0x87, 0x40, 0x11, 0x11, 0x11, 0x45, 0x44,
+        0x4C, 0x50, 0xD8, 0x44, 0x44, 0x44, 0x45, 0xC0,
+        0x47, 0x10, 0x10, 0x13, 0x10, 0x11, 0x11, 0x15,
+        0x11, 0x11, 0x11, 0x59, 0x91, 0x00, 0x04, 0x84,
+        0x07, 0x01, 0x44, 0x54, 0x00, 0x10, 0x84, 0x40,
+    };
+    int b = cc >> 3;
+
+    if (b < 0 || b >= 112) {
+        return 0;
+    }
+    return codes[b] & (1 << (cc & 0x7)) ? 1 : 0;
+}
+
+/* Whether ISO 3166-1 alpha2 */
+static int iso3166_alpha2(const char *cc) {
+    static const unsigned char codes[85] = {
+        0x78, 0x59, 0xDF, 0xEE, 0xEF, 0xBD, 0xDD, 0xDE,
+        0x27, 0x3F, 0x84, 0x15, 0x80, 0xD4, 0x00, 0x0E,
+        0x00, 0x5C, 0x09, 0xB0, 0x9F, 0xFB, 0x15, 0x00,
+        0x8D, 0x06, 0x18, 0x78, 0x0F, 0x40, 0x40, 0x03,
+        0x00, 0x1D, 0x2B, 0xF4, 0x41, 0x81, 0x4F, 0xFD,
+        0xFC, 0xFF, 0xD7, 0x25, 0x4B, 0x08, 0x00, 0x01,
+        0x40, 0x3C, 0x8F, 0x53, 0x01, 0x00, 0x00, 0x40,
+        0x00, 0x51, 0xF1, 0xFD, 0xE7, 0x3A, 0xBB, 0x9F,
+        0x9A, 0x41, 0x10, 0x04, 0x57, 0x85, 0x40, 0x00,
+        0x02, 0x40, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
+        0x08, 0x04, 0x40, 0x00, 0x01,
+    };
+    int cc_int;
+
+    if (cc[0] < 'A' || cc[0] > 'Z' || cc[1] < 'A' || cc[1] > 'Z') {
+        return 0;
+    }
+    cc_int = (cc[0] - 'A') * 26 + (cc[1] - 'A');
+
+    return codes[cc_int >> 3] & (1 << (cc_int & 0x7)) ? 1 : 0;
+}
+
+#endif /* Z_ISO3166_H */