vpr.c

unix v7是最后一个广泛发布的研究型UNIX版本

/*
 * vpr -- Versatek printer filter
 */

#include <stdio.h>

#define	LINELN	132
#define	EJLINE	63
#define	SETSTATE (('v'<<8)+1)

int	anydone;
char	linebuf[LINELN+2];
int	sppmode[]	= {0400, 0, 0};
int	pltmode[]	= {0200, 0, 0};
int	clrcom[]	= {0404, 0, 0};
int	termcom[]	= {0240, 0, 0};
int	prtmode[]	= {0100, 0, 0};
int	ov;
char	ovbuf[2*LINELN];
FILE	*in	= stdin;
FILE	*out;
char	*ban;
int	npages	= 1;
char	chrtab[][16];
int	lineno;
char	*ctime();

main(argc, argv)
char **argv;
{

	if ((out = fopen("/dev/vp0", "w")) == NULL) {
		fprintf(stderr, "Can't open printer\n");
		exit(1);
	}
	if (argc > 2 && argv[1][0]=='-' && argv[1][1]=='b') {
		argc -= 2;
		banner(ban = argv[2]);
		argv += 2;
	}
	if (argc<=1)
		anydone |= send();
	else while (argc>1) {
		if ((in = fopen(argv[1], "r")) == NULL) {
			fprintf(stderr, "Can't find %s\n", argv[1]);
			argv++;
			argc--;
			anydone |= 01;
			continue;
		}
		anydone |= send();
		argc--;
		argv++;
		fclose(in);
		fprintf(out, "\014");
	}
	if (anydone==0)
		exit(1);
	fprintf(out, "\004");
	if (ferror(out)) {
		fprintf(out, "Printer IO error\n");
		exit(1);
	}
	fclose(out);
	if (ban && access("/usr/adm/vpacct", 02)>=0
	 && (out = fopen("/usr/adm/vpacct", "a"))!=NULL) {
		fprintf(out, "%4d %s\n", npages, ban);
	}
	return(0);
}

send()
{
	register nskipped;

	lineno = 0;
	nskipped = 0;
	while (getline()) {
		if (lineno==0 && linebuf[0]==0 && nskipped<3) {
			nskipped ++;
			continue;
		}
		if (lineno >= EJLINE) {
			nskipped = 0;
			putline(1);
			lineno = 0;
		} else {
			putline(0);
			lineno++;
		}
	}
	if (lineno>0)
		npages++;
	return(1);
}

getline()
{
	register col, maxcol, c;

	ov = 0;
	for (col=0; col<LINELN; col++) {
		linebuf[col] = ' ';
		ovbuf[2*col] = ovbuf[2*col+1] = 0;
	}
	col = 8;
	maxcol = 0;
	for (;;) switch (c = getc(in)) {

	case EOF:
		return(0);

	default:
		if (c>=' ') {
			if (col < LINELN) {
				if (linebuf[col]=='_') {
					ov++;
					ovbuf[2*col] = 0377;
					ovbuf[2*col+1] = 0377;
				}
				linebuf[col++] = c;
				if (col > maxcol)
					maxcol = col;
			}
		}
		continue;

	case '\f':
		lineno = EJLINE;
		continue;
	case ' ':
		col++;
		continue;


	case '\t':
		col = (col|07) + 1;
		if (col>maxcol)
			maxcol = col;
		continue;

	case '\r':
		col = 0;
		continue;

	case '_':
		if (col>=LINELN) {
			col++;
			continue;
		}
		if (linebuf[col]!=' ') {
			ovbuf[2*col] = 0377;
			ovbuf[2*col+1] = 0377;
			ov++;
		} else
			linebuf[col] = c;
		col++;
		if (col>maxcol)
			maxcol = col;
		continue;

	case '\n':
		if (maxcol>=LINELN)
			maxcol = LINELN;
		linebuf[maxcol] = 0;
		return(1);

	case '\b':
		if (col>0)
			col--;
		continue;
	}
}

putline(ff)
{
	register char *lp;
	register c;
	extern errno;

	errno = 0;
	lp = linebuf;
	while (c = *lp++)
		putc(c, out);
	if (ov) {
		putc('\n', out);
		fflush(out);
		ioctl(fileno(out), SETSTATE, pltmode);
		for (lp=ovbuf; lp < &ovbuf[2*LINELN]; )
			putc(*lp++, out);
		fflush(out);
		ioctl(fileno(out), SETSTATE, prtmode);
	}
	if (ff) {
		putc('\014', out);
		npages++;
	} else if (ov==0)
		putc('\n', out);
	if (ferror(out)) {
		printf("Printer IO error\n");
		exit(1);
	}
}

banner(s)
char *s;
{
	long timeb;
	register char *sp;
	int i, j, t;

	fprintf(out, "\n\n\n\n\n\n\n\n");
	for (i=0; i<16; i++) {
		fprintf(out, "                ");
		for (sp=s; *sp; sp++) {
			if (*sp<=' '|| *sp >'}')
				continue;
			fprintf(out, "  ");
			t = chrtab[*sp - ' '][i];
			for (j=7; j>=0; j--)
				if ((t>>j) & 01)
					putc('X', out);
				else
					putc(' ', out);
		}
		putc('\n', out);
	}
	fprintf(out, "\n\n\n\n\n\n\n\n");
	time(&timeb);
	fprintf(out, "                ");
	fprintf(out, ctime(&timeb));
	fprintf(out, "\014");
}

char	chrtab[][16] = {
0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000, /*, sp, */
0010,0010,0010,0010,0010,0010,0010,0010,0000,0000,0010,0000,0000,0000,0000,0000, /*, !, */
0024,0024,0024,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000, /*, ", */
0000,0000,0000,0044,0044,0176,0044,0044,0176,0044,0044,0000,0000,0000,0000,0000, /*, #, */
0000,0010,0010,0010,0076,0101,0100,0076,0001,0101,0076,0010,0010,0000,0000,0000, /*, $, */
0000,0000,0000,0141,0142,0004,0010,0010,0020,0043,0103,0000,0000,0000,0000,0000, /*, %, */
0000,0000,0070,0104,0110,0060,0060,0111,0106,0106,0071,0000,0000,0000,0000,0000, /*, &, */
0004,0010,0020,0040,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000, /*, ', */
0000,0004,0010,0020,0040,0040,0040,0040,0040,0040,0020,0010,0004,0000,0000,0000, /*, (, */
0000,0040,0020,0010,0004,0004,0004,0004,0004,0004,0010,0020,0040,0000,0000,0000, /*, ), */
0000,0000,0000,0010,0111,0052,0034,0177,0034,0052,0111,0010,0000,0000,0000,0000, /*, *, */
0000,0000,0000,0000,0010,0010,0010,0177,0010,0010,0010,0000,0000,0000,0000,0000, /*, +, */
0000,0000,0000,0000,0000,0000,0000,0000,0000,0030,0030,0010,0020,0000,0000,0000, /*, ,, */
0000,0000,0000,0000,0000,0000,0000,0176,0000,0000,0000,0000,0000,0000,0000,0000, /*, -, */
0000,0000,0000,0000,0000,0000,0000,0000,0000,0030,0030,0000,0000,0000,0000,0000, /*, ., */
0000,0000,0001,0002,0004,0010,0010,0010,0020,0040,0100,0000,0000,0000,0000,0000, /*, /, */
0000,0030,0044,0102,0102,0102,0102,0102,0102,0044,0030,0000,0000,0000,0000,0000, /*, 0, */
0000,0010,0030,0010,0010,0010,0010,0010,0010,0010,0034,0000,0000,0000,0000,0000, /*, 1, */
0000,0070,0104,0004,0004,0010,0020,0040,0100,0100,0174,0000,0000,0000,0000,0000, /*, 2, */
0000,0176,0004,0004,0010,0014,0002,0002,0002,0104,0070,0000,0000,0000,0000,0000, /*, 3, */
0000,0004,0014,0024,0044,0104,0176,0004,0004,0004,0004,0000,0000,0000,0000,0000, /*, 4, */
0000,0174,0100,0100,0130,0144,0002,0002,0102,0044,0030,0000,0000,0000,0000,0000, /*, 5, */
0000,0074,0102,0100,0130,0144,0102,0102,0102,0044,0030,0000,0000,0000,0000,0000, /*, 6, */
0000,0176,0004,0004,0010,0010,0020,0020,0040,0040,0040,0000,0000,0000,0000,0000, /*, 7, */
0000,0034,0042,0101,0042,0076,0101,0101,0101,0101,0076,0000,0000,0000,0000,0000, /*, 8, */
0000,0034,0042,0101,0101,0101,0043,0036,0004,0010,0020,0040,0000,0000,0000,0000, /*, 9, */
0000,0000,0000,0000,0000,0000,0030,0030,0000,0030,0030,0000,0000,0000,0000,0000, /*, :, */
0000,0000,0000,0000,0000,0000,0030,0030,0000,0030,0030,0020,0040,0000,0000,0000, /*, ;, */
0002,0004,0010,0020,0040,0100,0040,0020,0010,0004,0002,0000,0000,0000,0000,0000, /*, <, */
0000,0000,0000,0000,0177,0000,0177,0000,0000,0000,0000,0000,0000,0000,0000,0000, /*, =, */
0100,0040,0020,0010,0004,0002,0004,0010,0020,0040,0100,0000,0000,0000,0000,0000, /*, >, */
0000,0030,0044,0102,0001,0002,0004,0010,0010,0000,0010,0000,0000,0000,0000,0000, /*, ?, */
0000,0074,0102,0101,0115,0123,0121,0121,0121,0111,0046,0000,0000,0000,0000,0000, /*, @, */
0000,0010,0024,0042,0101,0101,0177,0101,0101,0101,0101,0000,0000,0000,0000,0000, /*, A, */
0000,0176,0101,0101,0101,0176,0101,0101,0101,0101,0176,0000,0000,0000,0000,0000, /*, B, */
0000,0076,0101,0100,0100,0100,0100,0100,0100,0101,0076,0000,0000,0000,0000,0000, /*, C, */
0000,0176,0101,0101,0101,0101,0101,0101,0101,0101,0176,0000,0000,0000,0000,0000, /*, D, */
0000,0176,0100,0100,0100,0170,0100,0100,0100,0100,0177,0000,0000,0000,0000,0000, /*, E, */
0000,0177,0100,0100,0100,0174,0100,0100,0100,0100,0100,0000,0000,0000,0000,0000, /*, F, */
0000,0076,0101,0100,0100,0117,0101,0101,0101,0101,0076,0000,0000,0000,0000,0000, /*, G, */
0000,0101,0101,0101,0101,0176,0101,0101,0101,0101,0101,0000,0000,0000,0000,0000, /*, H, */
0000,0034,0010,0010,0010,0010,0010,0010,0010,0010,0034,0000,0000,0000,0000,0000, /*, I, */
0000,0016,0004,0004,0004,0004,0004,0004,0104,0104,0070,0000,0000,0000,0000,0000, /*, J, */
0000,0101,0102,0104,0110,0120,0160,0110,0104,0102,0101,0000,0000,0000,0000,0000, /*, K, */
0000,0100,0100,0100,0100,0100,0100,0100,0100,0100,0177,0000,0000,0000,0000,0000, /*, L, */
0000,0101,0143,0125,0111,0101,0101,0101,0101,0101,0101,0000,0000,0000,0000,0000, /*, M, */
0000,0101,0141,0121,0111,0105,0103,0101,0101,0101,0101,0000,0000,0000,0000,0000, /*, N, */
0000,0076,0101,0101,0101,0101,0101,0101,0101,0101,0076,0000,0000,0000,0000,0000, /*, O, */
0000,0176,0101,0101,0101,0176,0100,0100,0100,0100,0100,0000,0000,0000,0000,0000, /*, P, */
0000,0076,0101,0101,0101,0101,0101,0101,0131,0105,0076,0002,0001,0000,0000,0000, /*, Q, */
0000,0176,0101,0101,0101,0176,0104,0102,0101,0101,0101,0000,0000,0000,0000,0000, /*, R, */
0000,0076,0101,0100,0100,0076,0001,0001,0001,0101,0076,0000,0000,0000,0000,0000, /*, S, */
0000,0177,0010,0010,0010,0010,0010,0010,0010,0010,0010,0000,0000,0000,0000,0000, /*, T, */
0000,0101,0101,0101,0101,0101,0101,0101,0101,0101,0076,0000,0000,0000,0000,0000, /*, U, */
0000,0101,0101,0101,0101,0101,0101,0101,0042,0024,0010,0000,0000,0000,0000,0000, /*, V, */
0000,0101,0101,0101,0101,0111,0111,0125,0143,0101,0101,0000,0000,0000,0000,0000, /*, W, */
0000,0101,0101,0042,0024,0010,0024,0042,0101,0101,0101,0000,0000,0000,0000,0000, /*, X, */
0000,0101,0042,0024,0010,0010,0010,0010,0010,0010,0010,0000,0000,0000,0000,0000, /*, Y, */
0000,0177,0001,0002,0004,0010,0020,0040,0100,0100,0177,0000,0000,0000,0000,0000, /*, Z, */
0000,0034,0020,0020,0020,0020,0020,0020,0020,0020,0020,0034,0000,0000,0000,0000, /*, [, */
0000,0000,0100,0040,0020,0010,0010,0010,0004,0002,0001,0000,0000,0000,0000,0000, /*, , \, */
0000,0070,0010,0010,0010,0010,0010,0010,0010,0010,0010,0070,0000,0000,0000,0000, /*, ], */
0010,0024,0042,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000, /*, ^, */
0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0377,0000,0000, /*, _, */
0040,0020,0010,0004,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000, /*, `, */
0000,0000,0000,0000,0000,0074,0002,0076,0102,0102,0076,0000,0000,0000,0000,0000, /*, a, */
0000,0100,0100,0100,0100,0174,0102,0102,0102,0102,0174,0000,0000,0000,0000,0000, /*, b, */
0000,0000,0000,0000,0000,0074,0102,0100,0100,0102,0074,0000,0000,0000,0000,0000, /*, c, */
0002,0002,0002,0002,0002,0076,0102,0102,0102,0102,0076,0000,0000,0000,0000,0000, /*, d, */
0000,0000,0000,0000,0000,0074,0102,0174,0100,0102,0074,0000,0000,0000,0000,0000, /*, e, */
0000,0016,0020,0020,0020,0176,0020,0020,0020,0020,0020,0000,0000,0000,0000,0000, /*, f, */
0000,0000,0000,0000,0000,0076,0102,0102,0102,0102,0076,0002,0002,0102,0076,0000, /*, g, */
0000,0100,0100,0100,0100,0174,0102,0102,0102,0102,0102,0000,0000,0000,0000,0000, /*, h, */
0000,0000,0000,0010,0000,0030,0010,0010,0010,0010,0034,0000,0000,0000,0000,0000, /*, i, */
0000,0000,0000,0010,0000,0030,0010,0010,0010,0010,0010,0010,0010,0050,0020,0000, /*, j, */
0000,0100,0100,0100,0100,0106,0110,0120,0160,0110,0106,0000,0000,0000,0000,0000, /*, k, */
0000,0030,0010,0010,0010,0010,0010,0010,0010,0010,0034,0000,0000,0000,0000,0000, /*, l, */
0000,0000,0000,0000,0000,0166,0111,0111,0111,0111,0111,0000,0000,0000,0000,0000, /*, m, */
0000,0000,0000,0000,0100,0174,0102,0102,0102,0102,0102,0000,0000,0000,0000,0000, /*, n, */
0000,0000,0000,0000,0000,0074,0102,0102,0102,0102,0074,0000,0000,0000,0000,0000, /*, o, */
0000,0000,0000,0000,0000,0174,0102,0102,0102,0102,0174,0100,0100,0100,0100,0000, /*, p, */
0000,0000,0000,0000,0000,0076,0102,0102,0102,0102,0076,0002,0002,0002,0002,0000, /*, q, */
0000,0000,0000,0000,0000,0134,0142,0100,0100,0100,0100,0000,0000,0000,0000,0000, /*, r, */
0000,0000,0000,0000,0000,0076,0100,0074,0002,0102,0074,0000,0000,0000,0000,0000, /*, s, */
0000,0020,0020,0020,0020,0176,0020,0020,0020,0020,0014,0000,0000,0000,0000,0000, /*, t, */
0000,0000,0000,0000,0000,0102,0102,0102,0102,0102,0075,0000,0000,0000,0000,0000, /*, u, */
0000,0000,0000,0000,0000,0101,0101,0101,0042,0024,0010,0000,0000,0000,0000,0000, /*, v, */
0000,0000,0000,0000,0000,0111,0111,0111,0111,0111,0066,0000,0000,0000,0000,0000, /*, w, */
0000,0000,0000,0000,0000,0102,0044,0030,0030,0044,0102,0000,0000,0000,0000,0000, /*, x, */
0000,0000,0000,0000,0000,0102,0102,0102,0042,0024,0010,0020,0040,0100,0000,0000, /*, y, */
0000,0000,0000,0000,0000,0176,0004,0010,0020,0040,0176,0000,0000,0000,0000,0000, /*, z, */
0000,0014,0020,0020,0020,0020,0040,0020,0020,0020,0020,0014,0000,0000,0000,0000, /*, {, */
0000,0010,0010,0010,0010,0000,0000,0010,0010,0010,0010,0000,0000,0000,0000,0000, /*, |, */
0000,0030,0010,0010,0010,0010,0004,0010,0010,0010,0010,0030,0000,0000,0000,0000, /*, }, */
0020,0052,0004,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000,0000, /*, ~, */
0000,0176,0176,0176,0176,0176,0176,0176,0176,0176,0176,0000,0000,0000,0000,0000, /*, del, */
};