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#include <string.h>
#include "nstring.h"
#include "pbm.h"
static char bit_table[2][3] = {
{1, 4, 0x10},
{2, 8, 0x40}
};
static int vmap_width;
static int vmap_height;
static int xres;
static int yres;
static char *vmap;
static void
init_map()
{
int x, y;
for(x = 0; x < vmap_width; ++x)
{
for(y = 0; y < vmap_height; ++y)
{
vmap[y*(vmap_width) + x] = 0x20;
}
}
}
static void
set_vmap(x, y)
int x, y;
{
int ix, iy;
ix = x/2;
iy = y/3;
vmap[iy*(vmap_width) + ix] |= bit_table[x % 2][y % 3];
}
static void
fill_map(pbmfp)
FILE *pbmfp;
{
bit **pbm_image;
int cols;
int rows;
int x;
int y;
pbm_image = pbm_readpbm(pbmfp, &cols, &rows);
for(y = 0; y < rows && y < yres; ++y)
{
for(x = 0; x < cols && x < xres; ++x)
{
if(pbm_image[y][x] == PBM_WHITE)
{
set_vmap(x, y);
}
}
}
}
static void
print_map()
{
int x, y;
int last_byte;
#ifdef BUFFERED
char *iobuf;
iobuf = (char *)malloc(BUFSIZ);
if(iobuf == NULL)
{
pm_message( "Can't allocate space for I/O buffer. "
"Using unbuffered I/O...\n" );
setbuf(stdout, NULL);
}
else
{
setbuf(stdout, iobuf);
}
#endif
fputs("\033[H\033[J", stdout); /* clear screen */
fputs("\033[?3h", stdout); /* 132 column mode */
fputs("\033)}\016", stdout); /* mosaic mode */
for(y = 0; y < vmap_height; ++y)
{
for(last_byte = vmap_width - 1;
last_byte >= 0
&& vmap[y * vmap_width + last_byte] == 0x20;
--last_byte)
;
for(x = 0; x <= last_byte; ++x)
{
fputc(vmap[y*(vmap_width) + x], stdout);
}
fputc('\n', stdout);
}
fputs("\033(B\017", stdout);
}
int
main(int argc, char * argv[]) {
int argn;
const char *pbmfile;
FILE *pbmfp;
const char *usage="[pbmfile]";
pbm_init( &argc, argv );
for(argn = 1;
argn < argc && argv[argn][0] == '-' && strlen(argv[argn]) > 1;
++argn)
{
pm_usage(usage);
}
if(argn >= argc)
{
pbmfile = "-";
}
else if(argc - argn != 1)
{
pm_usage(usage);
}
else
{
pbmfile = argv[argn];
}
if(streq(pbmfile, "-"))
{
pbmfp = stdin;
}
else
{
pbmfp = pm_openr( argv[argn] );
}
vmap_width = 132;
vmap_height = 23;
xres = vmap_width * 2;
yres = vmap_height * 3;
vmap = malloc(vmap_width * vmap_height * sizeof(char));
if(vmap == NULL)
{
pm_error( "Cannot allocate memory" );
}
init_map();
fill_map(pbmfp);
print_map();
/* If the program failed, it previously aborted with nonzero completion
code, via various function calls.
*/
return 0;
}
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