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/* pbmtoicon.c - read a portable bitmap and produce a Sun icon 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"
static void putinit ARGS(( void ));
static void putbit ARGS(( bit b ));
static void putrest ARGS(( void ));
static void putitem ARGS(( void ));
int
main( argc, argv )
int argc;
char* argv[];
{
FILE* ifp;
bit* bitrow;
register bit* bP;
int rows, cols, format, pad, padleft, padright, row, col;
pbm_init( &argc, argv );
if ( argc > 2 )
pm_usage( "[pbmfile]" );
if ( argc == 2 )
ifp = pm_openr( argv[1] );
else
ifp = stdin;
pbm_readpbminit( ifp, &cols, &rows, &format );
bitrow = pbm_allocrow( cols );
/* Round cols up to the nearest multiple of 16. */
pad = ( ( cols + 15 ) / 16 ) * 16 - cols;
padleft = pad / 2;
padright = pad - padleft;
printf( "/* Format_version=1, Width=%d, Height=%d", cols + pad, rows );
printf( ", Depth=1, Valid_bits_per_item=16\n */\n" );
putinit( );
for ( row = 0; row < rows; ++row )
{
pbm_readpbmrow( ifp, bitrow, cols, format );
for ( col = 0; col < padleft; ++col )
putbit( 0 );
for ( col = 0, bP = bitrow; col < cols; ++col, ++bP )
putbit( *bP );
for ( col = 0; col < padright; ++col )
putbit( 0 );
}
pm_close( ifp );
putrest( );
exit( 0 );
}
static int item, bitsperitem, bitshift, itemsperline, firstitem;
static void
putinit( )
{
itemsperline = 0;
bitsperitem = 0;
item = 0;
bitshift = 15;
firstitem = 1;
}
#if __STDC__
static void
putbit( bit b )
#else /*__STDC__*/
static void
putbit( b )
bit b;
#endif /*__STDC__*/
{
if ( bitsperitem == 16 )
putitem( );
++bitsperitem;
if ( b == PBM_BLACK )
item += 1 << bitshift;
--bitshift;
}
static void
putrest( )
{
if ( bitsperitem > 0 )
putitem( );
putchar( '\n' );
}
static void
putitem( )
{
const char* hexits = "0123456789abcdef";
if ( firstitem )
firstitem = 0;
else
putchar( ',' );
if ( itemsperline == 8 )
{
putchar( '\n' );
itemsperline = 0;
}
if ( itemsperline == 0 )
putchar( '\t' );
putchar( '0' );
putchar( 'x' );
putchar( hexits[item >> 12] );
putchar( hexits[( item >> 8 ) & 15] );
putchar( hexits[( item >> 4 ) & 15] );
putchar( hexits[item & 15] );
++itemsperline;
bitsperitem = 0;
item = 0;
bitshift = 15;
}
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