102 lines
2.1 KiB
NASM
102 lines
2.1 KiB
NASM
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use32
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db 'MENUET01'
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dd 1
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dd start
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dd i_end
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dd mem, mem
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dd 0, 0
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start:
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push 70
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pop eax
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mov ebx, fileinfo
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int 0x40
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cmp ebx, max_file_size
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jz exit
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cmp ebx, -1
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jnz @f
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exit:
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or eax, -1
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int 0x40
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@@:
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mov esi, filebuf
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xor ecx, ecx
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scan1l1:
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or edi, -1
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scan1:
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inc edi
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lodsb
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test al, al
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jz scan1done
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cmp al, 13
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jz newline
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cmp al, 10
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jnz scan1
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newline:
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test edi, edi
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jz scan1l1
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inc ecx
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jmp scan1l1
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scan1done:
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test edi, edi
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jz @f
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inc ecx
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@@:
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jecxz exit
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push 3
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pop eax
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int 0x40
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ror eax, 16
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mov edx, 1024
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@@:
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sub eax, 0x43ab45b5
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ror eax, 1
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xor eax, 0x32c4324f
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ror eax, 1
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dec edx
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jnz @b
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div ecx
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; use edx as random index
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mov esi, filebuf
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scan2l1:
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push esi
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or edi, -1
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scan2:
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inc edi
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lodsb
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test al, al
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jz newline2
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cmp al, 13
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jz newline2
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cmp al, 10
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jnz scan2
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newline2:
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pop eax
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test edi, edi
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jz scan2l1
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dec edx
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jns scan2l1
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mov byte [esi-1], 0
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; set eax (-> ASCIIZ string) as skin
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mov [eax-4], esi
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lea ecx, [eax-20]
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push 48
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pop eax
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mov bl, 8
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int 0x40
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jmp exit
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fileinfo:
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dd 0
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dq 0
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dd max_file_size
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dd filebuf
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db '/rd/1/skinsel.dat',0
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i_end:
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max_file_size = 0x1000 - 0x40 - $
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filebuf:
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rb max_file_size
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; stack
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rb 0x40
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mem:
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