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comparison mupdf-source/thirdparty/zint/extras/cuecat.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * cuecat.c
3 *
4 * This code creates barcodes as intended for use with the CueCat scheme (without the
5 * "cue" symbol which may still be trademarked). As the system was ultimately not
6 * successful this is now simply a curiosity.
7 *
8 * "The CueCat, styled :CueCat with a leading colon, is a cat-shaped handheld barcode
9 * reader that was released in 2000 by the now-defunct Digital Convergence Corporation.
10 * The CueCat enabled a user to open a link to an Internet URL by scanning a barcode —
11 * called a "cue" by Digital Convergence — appearing in an article or catalog or on
12 * some other printed matter."
13 *
14 * For more information:
15 * https://linas.org/banned/cuecat/www.fluent-access.com.wtpapers.cuecat.index.html
16 *
17 */
18
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <ctype.h>
23
24 static const char *C128Table[107] = {
25 /* Code 128 character encodation */
26 "212222", "222122", "222221", "121223", "121322", "131222", "122213",
27 "122312", "132212", "221213", "221312", "231212", "112232", "122132", "122231", "113222",
28 "123122", "123221", "223211", "221132", "221231", "213212", "223112", "312131", "311222",
29 "321122", "321221", "312212", "322112", "322211", "212123", "212321", "232121", "111323",
30 "131123", "131321", "112313", "132113", "132311", "211313", "231113", "231311", "112133",
31 "112331", "132131", "113123", "113321", "133121", "313121", "211331", "231131", "213113",
32 "213311", "213131", "311123", "311321", "331121", "312113", "312311", "332111", "314111",
33 "221411", "431111", "111224", "111422", "121124", "121421", "141122", "141221", "112214",
34 "112412", "122114", "122411", "142112", "142211", "241211", "221114", "413111", "241112",
35 "134111", "111242", "121142", "121241", "114212", "124112", "124211", "411212", "421112",
36 "421211", "212141", "214121", "412121", "111143", "111341", "131141", "114113", "114311",
37 "411113", "411311", "113141", "114131", "311141", "411131", "211412", "211214", "211232",
38 "2331112"
39 };
40
41 void print_head(char cat_number[]) {
42 printf("<?xml version=\"1.0\" standalone=\"no\"?>\n");
43 printf("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n");
44 printf(" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
45 printf("<svg width=\"149.60\" height=\"36.00\" version=\"1.1\"\n");
46 printf(" xmlns=\"http://www.w3.org/2000/svg\">\n");
47 printf(" <desc>CueCat %s</desc>\n\n", cat_number);
48 printf(" <g id=\"cuecat\" fill = \"#000000\">\n");
49 printf(" <rect x=\"0\" y=\"0\" width=\"149.60\" height=\"36.00\" fill=\"#ffffff\" />\n");
50 }
51
52 void print_cue() {
53 /* Just dots and triangles as the :C symbol may still be a trademark */
54 printf(" <circle cx=\"7.00\" cy=\"12.50\" r=\"3.50\" fill=\"red\" />\n");
55 printf(" <circle cx=\"7.00\" cy=\"23.50\" r=\"3.50\" fill=\"red\" />\n");
56 printf(" <polygon points=\"14.00,4.00 14.00,32.00 25.60,32.00\" />\n");
57 printf(" <polygon points=\"134.00,4.00 145.60,4.00 145.60,32.00\" />\n");
58 }
59
60 void print_data(char pattern[]) {
61 /* Output the lines of the barcode at an attractive 22.5 degree angle */
62 double posn = 24;
63 int length = strlen(pattern);
64 int i;
65
66 for (i = 0; i < length; i++) {
67 if ((i % 2) == 0) {
68 printf(" <polygon points=\"%.2f,4.00 %.2f,4.00 %.2f,32.00 %.2f,32.00\" />\n",
69 posn, posn + (pattern[i] - '0'), posn + (pattern[i] - '0') + 11.6, posn + 11.6);
70 }
71 posn += (pattern[i] - '0');
72 }
73 }
74
75 void print_hrt(char cat_number[]) {
76 /* Put readable text at the bottom of the symbol */
77 char hrt[25];
78 int i, j;
79
80 printf(" <rect x=\"57.00\" y=\"28.00\" width=\"61.00\" height=\"5.00\" fill=\"white\" />\n");
81
82 strcpy(hrt, "C ");
83 for (i = 0, j = 2; i < strlen(cat_number); i++) {
84 hrt[j] = cat_number[i];
85 j++;
86 if ((i % 2) != 0) {
87 hrt[j] = ' ';
88 j++;
89 }
90 }
91 hrt[j] = '\0';
92 printf(" <text x=\"58.00\" y=\"32.00\" font-family=\"Verdana\" font-size=\"5\">%s</text>\n", hrt);
93 }
94
95 void print_foot() {
96 printf(" </g>\n");
97 printf("</svg>\n");
98 }
99
100 int main(int argc, char** argv) {
101 int in_length;
102 char cat_number[16];
103 char pattern[90];
104 int cw[7];
105 int i;
106 int total_sum;
107
108 if (argc != 2) {
109 /* Only command line input should be the number to encode */
110 printf("Usage: cuecat {number}\n");
111 printf("Where {number} is the number to be encoded, up to 14 digits\n");
112 return 0;
113 } else {
114 in_length = strlen(argv[1]);
115 if (in_length > 14) {
116 /* Check maximum length */
117 printf("Input data too long\n");
118 return 0;
119 } else {
120 /* Add padding if needed */
121 strcpy(cat_number, "");
122 for(i = in_length; i < 14; i++) {
123 strcat(cat_number, "0");
124 }
125 strcat(cat_number, argv[1]);
126 }
127 }
128
129 /* Check input is numeric */
130 for (i = 0; i < 10; i++) {
131 if (!(isdigit(cat_number[i]))) {
132 printf("Invalid character(s) in input data\n");
133 return 0;
134 }
135 }
136
137 // There is no 'Start' character
138
139 strcpy(pattern, "");
140 for (i = 0; i < 7; i ++) {
141 cw[i] = (cat_number[i * 2] - '0') * 10;
142 cw[i] += cat_number[(i * 2) + 1] - '0';
143 strcat(pattern, C128Table[cw[i]]);
144
145 if (cw[i] >= 96) {
146 /* CueCat can't decode number pairs above 95 */
147 printf("Invalid input data\n");
148 return 0;
149 }
150 }
151
152
153 /* check digit calculation */
154 total_sum = 0;
155
156 for (i = 0; i < 7; i++) {
157 if (i > 0) {
158 cw[i] *= i;
159 }
160 total_sum += cw[i];
161 }
162 strcat(pattern, C128Table[total_sum % 103]);
163
164 strcat(pattern, C128Table[106]); // Stop
165
166 /* Start ouputting SVG file */
167 print_head(cat_number);
168 print_cue();
169 print_data(pattern);
170 print_hrt(cat_number);
171 print_foot();
172 }
173