src/px/ttyimage.c

/* Copyright (c) 1986 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  ttyimage.c - program to dump pixel file to dumb terminal.
 *
 *     8/15/85
 */

#include  <stdio.h>

#include  "color.h"


#define  NCOLS          133


main(argc, argv)
int  argc;
char  **argv;
{
        FILE  *input;
        int  xres, yres;
        COLR  scanline[NCOLS];
        register int  i, j;
        
        if (argc < 2)
                input = stdin;
        else if ((input = fopen(argv[1], "r")) == NULL) {
                fprintf(stderr, "%s: can't open file \"%s\"\n", argv[0], argv[1]);
                exit(1);
        }
        
                                /* get picture dimensions */
        if (checkheader(input, COLRFMT, NULL) < 0 ||
                        fgetresolu(&xres, &yres, input) != (YMAJOR|YDECR)) {
                fprintf(stderr, "%s: bad picture format\n", argv[0]);
                exit(1);
        }
        if (xres > NCOLS) {
                fprintf(stderr, "%s: resolution mismatch\n", argv[0]);
                exit(1);
        }
        
        for (i = 0; i < yres; i++) {
                if (freadcolrs(scanline, xres, input) < 0) {
                        fprintf(stderr, "%s: read error\n", argv[0]);
                        exit(1);
                }
                normcolrs(scanline, xres, 0);
                for (j = 0; j < xres; j++)
                        putchar(shade(scanline[j]));
                putchar('\n');
        }

        exit(0);
}


int
shade(clr)                      /* return character for color */
COLR  clr;
{
#define NSHADES  13

        static char  shadech[NSHADES+1] = " .,:;+?%&*$@#";

        return(shadech[normbright(clr)*NSHADES/256]);

#undef NSHADES
}
Revision:	1.7
Committed:	Thu Apr 18 14:35:47 1991 UTC (33 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.6:	+3 -4 lines
Log Message:	added format information to headers
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1986 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* ttyimage.c - program to dump pixel file to dumb terminal.
9			*
10			* 8/15/85
11			*/
12
13			#include <stdio.h>
14
15			#include "color.h"
16
17
18			#define NCOLS 133
19
20
21			main(argc, argv)
22			int argc;
23			char **argv;
24			{
25			FILE *input;
26			int xres, yres;
27	greg	1.3	COLR scanline[NCOLS];
28	greg	1.1	register int i, j;
29
30			if (argc < 2)
31			input = stdin;
32			else if ((input = fopen(argv[1], "r")) == NULL) {
33	greg	1.3	fprintf(stderr, "%s: can't open file \"%s\"\n", argv[0], argv[1]);
34	greg	1.1	exit(1);
35			}
36
37			/* get picture dimensions */
38	greg	1.7	if (checkheader(input, COLRFMT, NULL) < 0 \|\|
39			fgetresolu(&xres, &yres, input) != (YMAJOR\|YDECR)) {
40			fprintf(stderr, "%s: bad picture format\n", argv[0]);
41	greg	1.1	exit(1);
42			}
43			if (xres > NCOLS) {
44	greg	1.3	fprintf(stderr, "%s: resolution mismatch\n", argv[0]);
45	greg	1.1	exit(1);
46			}
47
48			for (i = 0; i < yres; i++) {
49	greg	1.3	if (freadcolrs(scanline, xres, input) < 0) {
50			fprintf(stderr, "%s: read error\n", argv[0]);
51	greg	1.1	exit(1);
52			}
53	greg	1.6	normcolrs(scanline, xres, 0);
54	greg	1.1	for (j = 0; j < xres; j++)
55	greg	1.3	putchar(shade(scanline[j]));
56	greg	1.1	putchar('\n');
57			}
58
59			exit(0);
60	greg	1.3	}
61
62
63			int
64			shade(clr) /* return character for color */
65			COLR clr;
66			{
67			#define NSHADES 13
68
69			static char shadech[NSHADES+1] = " .,:;+?%&*$@#";
70
71	greg	1.4	return(shadech[normbright(clr)*NSHADES/256]);
72	greg	1.3
73			#undef NSHADES
74	greg	1.1	}