--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/zint/extras/zebu_pdf.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,75 @@
+/* 
+ * zebu_pdf.c
+ * 
+ * This code uses Zint to encode data into a PDF417 and then outputs
+ * the symbol as text suitable for use with Code PDF417 font by
+ * Grand Zebu.
+ * 
+ * This code can be compiled with:
+ * 
+ * gcc -o zebu_pdf zebu_pdf.c -lzint
+ * 
+ * Grand Zebu's font can be downloaded from:
+ * 
+ * https://grandzebu.net/informatique/codbar-en/pdf417.htm
+ * 
+ */
+
+#include <stdio.h>
+#include <zint.h>
+#include <string.h>
+int main(int argc, char **argv)
+{
+    struct zint_symbol *my_symbol;
+    int error = 0;
+    int x, y, sub, glyph, group;
+    
+    my_symbol = ZBarcode_Create();
+    
+    my_symbol->symbology = BARCODE_PDF417;
+    my_symbol->output_options = OUT_BUFFER_INTERMEDIATE;
+    
+    error = ZBarcode_Encode(my_symbol, argv[1], strlen(argv[1]));
+    if (error != 0)
+    {
+        printf("%s\n", my_symbol->errtxt);
+    }
+    if (error >= ZINT_ERROR_TOO_LONG)
+    {
+        ZBarcode_Delete(my_symbol);
+        return 1;
+    }
+    
+    for (y = 0; y < my_symbol->rows; y++) {
+        printf("+*");
+        sub = 0;
+        glyph = 0;
+        group = 0;
+        for (x = 18; x < my_symbol->width - 19; x++) {
+            glyph *= 2;
+            if ((my_symbol->encoded_data[y][x / 8] >> (x % 8)) & 1) {
+                glyph++;
+            }
+            sub++;
+            if (sub == 5) {
+                if (glyph <= 5) {
+                    printf("%c", glyph + 'A');
+                } else {
+                    printf("%c", (glyph - 6) + 'a');
+                }
+                glyph = 0;
+                sub = 0;
+                group++;
+            }
+            if (group == 3) {
+                printf("*");
+                x += 2;
+                group = 0;
+            }
+        }
+        printf("-\n");
+    }
+    
+    ZBarcode_Delete(my_symbol);
+    return 0;
+}