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#ifndef lint |
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static const char RCSid[] = "$Id: ttyimage.c,v 2.5 2004/03/28 20:33:14 schorsch Exp $"; |
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#endif |
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/* |
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* ttyimage.c - program to dump pixel file to dumb terminal. |
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* |
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* 8/15/85 |
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*/ |
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|
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#include "rtio.h" |
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#include "platform.h" |
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#include "color.h" |
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#include "resolu.h" |
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|
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|
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#define NCOLS 133 |
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|
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static int shade(COLR clr); |
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|
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|
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int |
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main(int argc, char **argv) |
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{ |
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FILE *input; |
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int xres, yres; |
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COLR scanline[NCOLS]; |
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register int i, j; |
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|
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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", argv[0], argv[1]); |
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exit(1); |
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} |
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SET_FILE_BINARY(input); |
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/* get picture dimensions */ |
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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", argv[0]); |
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exit(1); |
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} |
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|
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for (i = 0; i < yres; i++) { |
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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(shade(scanline[j])); |
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putchar('\n'); |
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} |
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|
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exit(0); |
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} |
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|
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|
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static int |
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shade( /* return character for color */ |
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COLR clr |
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) |
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{ |
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#define NSHADES 13 |
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|
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static char shadech[NSHADES+1] = " .,:;+?%&*$@#"; |
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|
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return(shadech[normbright(clr)*NSHADES/256]); |
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|
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#undef NSHADES |
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} |
