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/* Copyright (c) 1986 Regents of the University of California */ |
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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include <stdio.h> |
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#include "color.h" |
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#include "resolu.h" |
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#define NCOLS 133 |
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char shadech[] = " .,:;+?%&*$@#"; |
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#define NSHADES (sizeof(shadech)-1) |
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#define shade(col) ( bright(col)>=1.0 ? NSHADES-1 : \ |
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(int)(bright(col)*NSHADES) ) |
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char *progname; |
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main(argc, argv) |
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int argc; |
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char **argv; |
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{ |
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FILE *input; |
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int xres, yres; |
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COLOR scanline[NCOLS]; |
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char sbuf[256]; |
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COLR scanline[NCOLS]; |
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register int i, j; |
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progname = argv[0]; |
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if (argc < 2) |
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input = stdin; |
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else if ((input = fopen(argv[1], "r")) == NULL) { |
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fprintf(stderr, "%s: can't open file \"%s\"\n", progname, argv[1]); |
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fprintf(stderr, "%s: can't open file \"%s\"\n", argv[0], argv[1]); |
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exit(1); |
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} |
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/* discard header */ |
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while (fgets(sbuf, sizeof(sbuf), input) != NULL && sbuf[0] != '\n') |
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; |
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/* get picture dimensions */ |
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if (fgetresolu(&xres, &yres, input) != (YMAJOR|YDECR)) { |
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fprintf(stderr, "%s: bad picture size\n", progname); |
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if (checkheader(input, COLRFMT, NULL) < 0 || |
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fgetresolu(&xres, &yres, input) < 0) { |
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fprintf(stderr, "%s: bad picture format\n", argv[0]); |
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exit(1); |
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} |
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if (xres > NCOLS) { |
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fprintf(stderr, "%s: resolution mismatch\n", progname); |
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fprintf(stderr, "%s: resolution mismatch\n", argv[0]); |
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exit(1); |
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} |
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for (i = 0; i < yres; i++) { |
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if (freadscan(scanline, xres, input) < 0) { |
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fprintf(stderr, "%s: read error\n", progname); |
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if (freadcolrs(scanline, xres, input) < 0) { |
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fprintf(stderr, "%s: read error\n", argv[0]); |
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exit(1); |
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} |
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normcolrs(scanline, xres, 0); |
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for (j = 0; j < xres; j++) |
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putchar(shadech[shade(scanline[j])]); |
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putchar(shade(scanline[j])); |
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putchar('\n'); |
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} |
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exit(0); |
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} |
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int |
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shade(clr) /* return character for color */ |
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COLR clr; |
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{ |
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#define NSHADES 13 |
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static char shadech[NSHADES+1] = " .,:;+?%&*$@#"; |
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return(shadech[normbright(clr)*NSHADES/256]); |
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#undef NSHADES |
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} |
