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PBM
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pbmtoxbm.c
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C/C++ Source or Header
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1996-11-18
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119 lines
/* pbmtoxbm.c - read a portable bitmap and produce an X11 bitmap file
**
** Copyright (C) 1988 by Jef Poskanzer.
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation. This software is provided "as is" without express or
** implied warranty.
*/
#include "pbm.h"
int
main( argc, argv )
int argc;
char* argv[];
{
FILE* ifp;
bit* bitrow;
register bit* bP;
int rows, cols, format, padright, row;
register int col;
char name[100];
char* cp;
int itemsperline;
register int bitsperitem;
register int item;
int firstitem;
char* hexchar = "0123456789abcdef";
pbm_init( &argc, argv );
if ( argc > 2 )
pm_usage( "[pbmfile]" );
if ( argc == 2 )
{
ifp = pm_openr( argv[1] );
strcpy( name, argv[1] );
if ( strcmp( name, "-" ) == 0 )
strcpy( name, "noname" );
if ( ( cp = index( name, '.' ) ) != 0 )
*cp = '\0';
}
else
{
ifp = stdin;
strcpy( name, "noname" );
}
pbm_readpbminit( ifp, &cols, &rows, &format );
bitrow = pbm_allocrow( cols );
/* Compute padding to round cols up to the nearest multiple of 8. */
padright = ( ( cols + 7 ) / 8 ) * 8 - cols;
printf( "#define %s_width %d\n", name, cols );
printf( "#define %s_height %d\n", name, rows );
printf( "static char %s_bits[] = {\n", name );
itemsperline = 0;
bitsperitem = 0;
item = 0;
firstitem = 1;
#define PUTITEM \
{ \
if ( firstitem ) \
firstitem = 0; \
else \
putchar( ',' ); \
if ( itemsperline == 15 ) \
{ \
putchar( '\n' ); \
itemsperline = 0; \
} \
if ( itemsperline == 0 ) \
putchar( ' ' ); \
++itemsperline; \
putchar('0'); \
putchar('x'); \
putchar(hexchar[item >> 4]); \
putchar(hexchar[item & 15]); \
bitsperitem = 0; \
item = 0; \
}
#define PUTBIT(b) \
{ \
if ( bitsperitem == 8 ) \
PUTITEM; \
if ( (b) == PBM_BLACK ) \
item += 1 << bitsperitem; \
++bitsperitem; \
}
for ( row = 0; row < rows; ++row )
{
pbm_readpbmrow( ifp, bitrow, cols, format );
for ( col = 0, bP = bitrow; col < cols; ++col, ++bP )
PUTBIT(*bP);
for ( col = 0; col < padright; ++col )
PUTBIT(0);
}
if ( ifp != stdin )
fclose( ifp );
if ( bitsperitem > 0 )
PUTITEM;
printf( "};\n" );
exit( 0 );
}