version 1.2, 1998/12/08 22:02:41
|
version 1.3, 1998/12/11 22:54:27
|
Line 23
|
Line 23
|
|
|
Create magicbuf 8 allot |
Create magicbuf 8 allot |
|
|
|
Variable bswap? |
|
Variable tchars |
|
|
|
: bswap ( n -- n' ) bswap? @ 0= ?EXIT 0 |
|
over 24 rshift $FF and or |
|
over 8 rshift $FF00 and or |
|
over 8 lshift $FF0000 and or |
|
over 24 lshift $FF000000 and or nip ; |
|
|
: search-magic ( fd -- ) >r |
: search-magic ( fd -- ) >r |
BEGIN magicbuf 8 r@ read-file throw 8 = WHILE |
BEGIN magicbuf 8 r@ read-file throw 8 = WHILE |
magicbuf s" Gforth1" tuck compare 0= UNTIL |
magicbuf s" Gforth" tuck compare 0= UNTIL |
ELSE true abort" No magic found" THEN |
ELSE true abort" No magic found" THEN |
|
magicbuf 6 + c@ digit? drop tchars ! |
|
magicbuf 7 + c@ 1 and 0= [ pad off 1 pad ! pad c@ 1 = ] Literal = bswap? ! |
rdrop ; |
rdrop ; |
|
|
Create image-header 4 cells allot |
Create image-header 4 cells allot |
Line 35 Variable bitmap-chars
|
Line 46 Variable bitmap-chars
|
|
|
: read-header ( fd -- ) |
: read-header ( fd -- ) |
image-header 4 cells rot read-file throw drop |
image-header 4 cells rot read-file throw drop |
image-header 2 cells + @ dup cell / image-cells ! 1- 8 cells / 1+ bitmap-chars ! |
image-header 2 cells + @ bswap tchars @ * |
|
dup cell / image-cells ! 1- 8 cells / 1+ bitmap-chars ! |
image-cells @ cells allocate throw to image |
image-cells @ cells allocate throw to image |
bitmap-chars @ allocate throw to bitmap ; |
bitmap-chars @ allocate throw to bitmap ; |
|
|
Line 50 Variable bitmap-chars
|
Line 62 Variable bitmap-chars
|
|
|
: .image ( -- ) |
: .image ( -- ) |
image-cells @ 0 ?DO |
image-cells @ 0 ?DO |
I 4 + I' min I ?DO space image I cells + @ .08x ." ," LOOP cr |
I 4 + I' min I ?DO space image I cells + @ bswap .08x ." ," LOOP cr |
4 +LOOP ; |
4 +LOOP ; |
|
|
: .reloc ( -- ) |
: .reloc ( -- ) |
Line 65 Variable bitmap-chars
|
Line 77 Variable bitmap-chars
|
r@ read-dictionary r@ read-bitmap r> close-file throw ; |
r@ read-dictionary r@ read-bitmap r> close-file throw ; |
|
|
: .imagesize ( -- ) |
: .imagesize ( -- ) |
image-header 3 cells + @ 1 cells / .08x ; |
image-header 3 cells + @ bswap 1 cells / tchars @ * .08x ; |
|
|
: .relocsize ( -- ) |
: .relocsize ( -- ) |
bitmap-chars @ .08x ; |
bitmap-chars @ .08x ; |