--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/zint/extras/cuecat.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,173 @@
+/* 
+ * cuecat.c
+ * 
+ * This code creates barcodes as intended for use with the CueCat scheme (without the
+ * "cue" symbol which may still be trademarked). As the system was ultimately not
+ * successful this is now simply a curiosity.
+ * 
+ * "The CueCat, styled :CueCat with a leading colon, is a cat-shaped handheld barcode
+ * reader that was released in 2000 by the now-defunct Digital Convergence Corporation.
+ * The CueCat enabled a user to open a link to an Internet URL by scanning a barcode —
+ * called a "cue" by Digital Convergence — appearing in an article or catalog or on
+ * some other printed matter."
+ * 
+ * For more information:
+ * https://linas.org/banned/cuecat/www.fluent-access.com.wtpapers.cuecat.index.html
+ * 
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+static const char *C128Table[107] = {
+    /* Code 128 character encodation */
+    "212222", "222122", "222221", "121223", "121322", "131222", "122213",
+    "122312", "132212", "221213", "221312", "231212", "112232", "122132", "122231", "113222",
+    "123122", "123221", "223211", "221132", "221231", "213212", "223112", "312131", "311222",
+    "321122", "321221", "312212", "322112", "322211", "212123", "212321", "232121", "111323",
+    "131123", "131321", "112313", "132113", "132311", "211313", "231113", "231311", "112133",
+    "112331", "132131", "113123", "113321", "133121", "313121", "211331", "231131", "213113",
+    "213311", "213131", "311123", "311321", "331121", "312113", "312311", "332111", "314111",
+    "221411", "431111", "111224", "111422", "121124", "121421", "141122", "141221", "112214",
+    "112412", "122114", "122411", "142112", "142211", "241211", "221114", "413111", "241112",
+    "134111", "111242", "121142", "121241", "114212", "124112", "124211", "411212", "421112",
+    "421211", "212141", "214121", "412121", "111143", "111341", "131141", "114113", "114311",
+    "411113", "411311", "113141", "114131", "311141", "411131", "211412", "211214", "211232",
+    "2331112"
+};
+
+void print_head(char cat_number[]) {
+    printf("<?xml version=\"1.0\" standalone=\"no\"?>\n");
+    printf("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n");
+    printf("   \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
+    printf("<svg width=\"149.60\" height=\"36.00\" version=\"1.1\"\n");
+    printf("   xmlns=\"http://www.w3.org/2000/svg\">\n");
+    printf("    <desc>CueCat %s</desc>\n\n", cat_number);
+    printf("    <g id=\"cuecat\" fill = \"#000000\">\n");
+    printf("        <rect x=\"0\" y=\"0\" width=\"149.60\" height=\"36.00\" fill=\"#ffffff\" />\n");
+}
+
+void print_cue() {
+    /* Just dots and triangles as the :C symbol may still be a trademark */
+    printf("        <circle cx=\"7.00\" cy=\"12.50\" r=\"3.50\" fill=\"red\" />\n");
+    printf("        <circle cx=\"7.00\" cy=\"23.50\" r=\"3.50\" fill=\"red\" />\n");
+    printf("        <polygon points=\"14.00,4.00 14.00,32.00 25.60,32.00\" />\n");
+    printf("        <polygon points=\"134.00,4.00 145.60,4.00 145.60,32.00\" />\n");
+}
+
+void print_data(char pattern[]) {
+    /* Output the lines of the barcode at an attractive 22.5 degree angle */
+    double posn = 24;
+    int length = strlen(pattern);
+    int i;
+    
+    for (i = 0; i < length; i++) {
+        if ((i % 2) == 0) {
+            printf("        <polygon points=\"%.2f,4.00 %.2f,4.00 %.2f,32.00 %.2f,32.00\" />\n",
+                posn, posn + (pattern[i] - '0'), posn + (pattern[i] - '0') + 11.6, posn + 11.6);
+        }
+        posn += (pattern[i] - '0');
+    }
+}
+
+void print_hrt(char cat_number[]) {
+    /* Put readable text at the bottom of the symbol */
+    char hrt[25];
+    int i, j;
+    
+    printf("        <rect x=\"57.00\" y=\"28.00\" width=\"61.00\" height=\"5.00\" fill=\"white\" />\n");
+    
+    strcpy(hrt, "C ");
+    for (i = 0, j = 2; i < strlen(cat_number); i++) {
+        hrt[j] = cat_number[i];
+        j++;
+        if ((i % 2) != 0) {
+            hrt[j] = ' ';
+            j++;
+        }
+    }
+    hrt[j] = '\0';
+    printf("        <text x=\"58.00\" y=\"32.00\" font-family=\"Verdana\" font-size=\"5\">%s</text>\n", hrt);
+}
+
+void print_foot() {
+    printf("    </g>\n");
+    printf("</svg>\n");
+}
+
+int main(int argc, char** argv) {
+    int in_length;
+    char cat_number[16];
+    char pattern[90];
+    int cw[7];
+    int i;
+    int total_sum;
+    
+    if (argc != 2) {
+        /* Only command line input should be the number to encode */
+        printf("Usage: cuecat {number}\n");
+        printf("Where {number} is the number to be encoded, up to 14 digits\n");
+        return 0;
+    } else {
+        in_length = strlen(argv[1]);
+        if (in_length > 14) {
+            /* Check maximum length */
+            printf("Input data too long\n");
+            return 0;
+        } else {
+            /* Add padding if needed */
+            strcpy(cat_number, "");
+            for(i = in_length; i < 14; i++) {
+                strcat(cat_number, "0");
+            }
+            strcat(cat_number, argv[1]);
+        }
+    }
+    
+    /* Check input is numeric */
+    for (i = 0; i < 10; i++) {
+        if (!(isdigit(cat_number[i]))) {
+            printf("Invalid character(s) in input data\n");
+            return 0;
+        }
+    }
+    
+    // There is no 'Start' character
+    
+    strcpy(pattern, "");
+    for (i = 0; i < 7; i ++) {
+        cw[i] = (cat_number[i * 2] - '0') * 10;
+        cw[i] += cat_number[(i * 2) + 1] - '0';
+        strcat(pattern, C128Table[cw[i]]);
+        
+        if (cw[i] >= 96) {
+            /* CueCat can't decode number pairs above 95 */
+            printf("Invalid input data\n");
+            return 0;
+        }
+    }
+
+    
+    /* check digit calculation */
+    total_sum = 0;
+
+    for (i = 0; i < 7; i++) {
+        if (i > 0) {
+            cw[i] *= i;
+        }
+        total_sum += cw[i];
+    }
+    strcat(pattern, C128Table[total_sum % 103]);
+    
+    strcat(pattern, C128Table[106]); // Stop
+    
+    /* Start ouputting SVG file */
+    print_head(cat_number);
+    print_cue();
+    print_data(pattern);
+    print_hrt(cat_number);
+    print_foot();
+}
+