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/* laserbar -- filter to print barcodes on postscript printer */
#define MAIN 1
#define LABEL 01
#define NFLAG 02
#define SFLAG 04
#include <stdio.h>
#include <ctype.h>
static int code39[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* sp ! " # $ % & ' */
0304, 0, 0, 0, 0250, 0052, 0, 0,
/* ( ) * + , - - / */
0, 0, 0224, 0212, 0, 0205, 0604, 0242,
/* 0 1 2 3 4 5 6 7 */
0064, 0441, 0141, 0540, 0061, 0460, 0160, 0045,
/* 8 9 : ; < = > ? */
0444, 0144, 0, 0, 0, 0, 0, 0,
/* @ A B C D E F G */
0, 0411, 0111, 0510, 0031, 0430, 0130, 0015,
/* H I J K L M N O */
0414, 0114, 0034, 0403, 0103, 0502, 0023, 0422,
/* P Q R S T U V W */
0122, 0007, 0406, 0106, 0026, 0601, 0301, 0700,
/* X Y Z [ \ ] ^ _ */
0221, 0620, 0320, 0, 0, 0, 0, 0,
/* ` a b c d e f g */
0, 0411, 0111, 0510, 0031, 0430, 0130, 0015,
/* h i j k l m n o */
0414, 0114, 0034, 0403, 0103, 0502, 0023, 0422,
/* p q r s t u v w */
0122, 0007, 0406, 0106, 0026, 0601, 0301, 0700,
/* x y z { | } ~ del */
0221, 0620, 0320, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
static void barprt();
void laserbar();
#ifdef MAIN
main(argc, argv)
char **argv;
{
int c, flags = 0, error = 0;
double rotate = 0, xoffset = 0, yoffset = 0, xscale = 1, yscale = 1;
extern char *optarg;
extern int optind;
extern double atof();
extern void exit();
while ((c = getopt(argc, argv, "r:x:y:X:Y:lns")) != EOF) {
switch(c) {
case 'r':
rotate = atof(optarg);
break;
case 'x':
xoffset = atof(optarg);
break;
case 'y':
yoffset = atof(optarg);
break;
case 'X':
xscale = atof(optarg);
break;
case 'Y':
yscale = atof(optarg);
break;
case 'l':
flags |= LABEL;
break;
case 'n':
flags |= NFLAG;
break;
case 's':
flags |= SFLAG;
break;
case '?':
++error;
}
}
if ((argc - optind) != 1)
++error;
if (error) {
(void) fprintf(stderr,
"Usage: %s [-r rotate] [-x xoffset] [-y yoffset] [-X xscale] [-Y yscale] [-lns] string\n",
*argv);
exit(1);
}
laserbar(stdout, argv[optind], rotate, xoffset, yoffset, xscale, yscale, flags);
return 0;
}
#endif /*MAIN*/
static int right = 0;
void
laserbar(fp, str, rotate, xoffset, yoffset, xscale, yscale, flags)
FILE *fp;
char *str;
double rotate, xoffset, yoffset, xscale, yscale;
int flags;
{
xoffset *= 72.;
yoffset *= 72.;
(void) fprintf(fp, "gsave %s\n", (flags & NFLAG) ? "newpath" : "");
if (xoffset || yoffset)
(void) fprintf(fp, "%f %f moveto\n", xoffset, yoffset);
if (xscale != 1 || yscale != 1)
(void) fprintf(fp, "%f %f scale\n", xscale, yscale);
if (rotate)
(void) fprintf(fp, "%f rotate\n", rotate);
(void) fputs("/Helvetica findfont 16 scalefont setfont\n", fp);
(void) fputs("/w { 0 rmoveto gsave 3 setlinewidth 0 -72 rlineto stroke grestore } def\n", fp);
(void) fputs("/n { 0 rmoveto gsave 1 setlinewidth 0 -72 rlineto stroke grestore } def\n", fp);
(void) fputs("/l { gsave 2 -88 rmoveto show grestore } def\n", fp);
barprt(fp, '*', 0);
while (*str)
barprt(fp, *(str++), (flags & LABEL));
barprt(fp, '*', 0);
(void) fprintf(fp, "%sgrestore\n", (flags & SFLAG) ? "showpage " : "");
right = 0;
}
static void
barprt(fp, c, label)
FILE *fp;
int c, label;
{
int i, mask, bar, wide;
if (!(i = code39[c]))
return;
if (islower(c))
c = toupper(c);
if (label)
(void) fprintf(fp, "(%c) l", c);
else
(void) fputs(" ", fp);
for (bar = 1, mask = 0400; mask; bar = 1 - bar, mask >>= 1) {
wide = mask & i;
if (bar) {
if (wide)
++right;
(void) fprintf(fp, " %d %s", right, wide ? "w" : "n");
right = (wide ? 2 : 1);
}
else
right += (wide ? 3 : 1);
}
(void) fputs("\n", fp);
++right;
}
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