home *** CD-ROM | disk | FTP | other *** search
- /* 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( )
- {
- 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;
- }
-