/usr/bin/cal with added hex output option. Generate Hex calendar ( unix src code )

Download
https://opensource.apple.com/source/misc_cmds/misc_cmds-9/cal/cal.c
apply this diff - compile and go. Use -x option to get hex output.

$ diff cal.c  cal_hex.c | sed 's/>/\>/;s/</\</'

36a37

>  * Hex version

138a140

> int xflag;

149,150c151,152

< yflag = year = 0;

< while ((ch = getopt(argc, argv, "jy")) != -1)

---

> yflag = year = xflag = 0;

> while ((ch = getopt(argc, argv, "jyx")) != -1)

157a160,162

> case 'x':

> xflag = 1;

> break;

210,211c215,219

< len = snprintf(lineout, sizeof(lineout), "%s %d",

<     month_names[month - 1], year);

---

> if (xflag) { 

> len = snprintf(lineout, sizeof(lineout), "%s 0x%x", month_names[month - 1], year);

> } else {

> len = snprintf(lineout, sizeof(lineout), "%s %d", month_names[month - 1], year);

> }

233c241,245

< (void)snprintf(lineout, sizeof(lineout), "%d", year);

---

> if (xflag) { 

> (void)snprintf(lineout, sizeof(lineout), "0x%x", year); 

> } else {

> (void)snprintf(lineout, sizeof(lineout), "%d", year);

> }

268c280,284

< (void)snprintf(lineout, sizeof(lineout), "%d", year);

---

> if (xflag) { 

> (void)snprintf(lineout, sizeof(lineout), "0x%x", year); 

> } else {

> (void)snprintf(lineout, sizeof(lineout), "%d", year);

> }

375a392,401

> static char *hday[] = {

>                 "",

>                 " 1", " 2", " 3", " 4", " 5", " 6", " 7",

>                 " 8", " 9", " A", " B", " C", " D", " E",

>                 " F" ,"10", "11", "12", "13", "14", "15", 

> "16", "17", "18", "19", "1A", "1B", "1C", 

> "1D", "1E", "1F",

>         };

> 

> 

395a422,425

> if ( xflag ) {

> *p++ = hday[day][0];

> *p++ = hday[day][1];

> } else {

397a428

> }

434c465

< (void)fprintf(stderr, "usage: cal [-jy] [[month] year]\n");

---

> (void)fprintf(stderr, "usage: cal [-jyx] [[month] year]\n");