forked from KolibriOS/kolibrios
190 lines
3.5 KiB
NASM
190 lines
3.5 KiB
NASM
;;===================================================================
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;; Copyright 2011 dunkaist <dunkaist@gmail.com>
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;; Distributed under the terms of the GNU General Public License v3.
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;; See http://www.gnu.org/licenses/gpl.txt for the full license text.
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;;-------------------------------------------------------------------
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CHAR1TXT_FILE_SIZE equ 20478
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CHAR2TXT_FILE_SIZE equ 25598
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CHAR1MT_FILE_SIZE equ 2304
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CHAR2MT_FILE_SIZE equ 2560
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FONT_HEIGHT equ 9
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FONT_WIDTH_MONO equ 5
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FONT_WIDTH_VAR equ 7
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use32
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org 0x0
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db 'MENUET01'
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dd 0x01, start, i_end, e_end, stacktop, 0x0, cur_dir
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include '../../proc32.inc'
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include '../../macros.inc'
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start:
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mcall 68, 11
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cld
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mov ecx, 4096
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mov edi, cur_dir
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xor al, al
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repnz scasb
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std
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mov al, '/'
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repnz scasb
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add edi, 2
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cld
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mov [cur_dir_slash], edi
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mov esi, _char1.txt
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mov ecx, 10/2
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rep movsw
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monospace:
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mcall 70, func70 ; get file info
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test eax, eax
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jnz quit
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mov ecx, dword[file_info.Size]
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cmp ecx, CHAR1TXT_FILE_SIZE
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jl quit
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mov [func70.bytes_to_read], ecx
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mcall 68, 12, ; allocate memory for char.txt
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test eax, eax
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jz quit
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mov [func70.destination], eax
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mov [func70.func_number], 0 ; read from file
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mcall 70, func70
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test eax, eax
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jnz freemem_quit
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xor dl, dl
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mov esi, [func70.destination]
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mov edi, esi ; yes, that's a feature
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mov bl, FONT_WIDTH_MONO
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.char:
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add esi, 8
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call do_symbol
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dec dl
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jnz .char
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mov [func70.func_number], 2 ; create/overwrite file
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mov [func70.bytes_to_read], CHAR1MT_FILE_SIZE
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mov edi, [cur_dir_slash]
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mov esi, _char1.mt
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mov ecx, 10/2
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rep movsw
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mcall 70, func70
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test eax, eax
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jnz freemem_quit
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varspace:
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push [func70.destination]
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push file_info
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pop [func70.destination]
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mov [func70.func_number], 5 ; get file info
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mov edi, [cur_dir_slash]
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mov esi, _char2.txt
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mov ecx, 10/2
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rep movsw
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mcall 70, func70
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pop [func70.destination]
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test eax, eax
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jnz freemem_quit
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mov ecx, dword[file_info.Size]
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cmp ecx, CHAR2TXT_FILE_SIZE
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jl freemem_quit
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mov [func70.bytes_to_read], ecx
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mcall 68, 20, ; realloc memory
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test eax, eax
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jz freemem_quit
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mov [func70.destination], eax
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mov [func70.func_number], 0 ; read from file
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mcall 70, func70
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test eax, eax
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jnz freemem_quit
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xor dl, dl
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mov esi, [func70.destination]
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mov edi, esi ; yes, that's a feature
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mov bl, FONT_WIDTH_VAR
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.char:
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add esi, 6
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lodsb
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cmp al, ' ' ; space means default symbol width (8)
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jnz @f
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mov al, 8+47
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@@: sub al, 47
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stosb
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add esi, 3
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call do_symbol
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dec dl
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jnz .char
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mov [func70.func_number], 2 ; create/overwrite file
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mov [func70.bytes_to_read], CHAR2MT_FILE_SIZE
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mov edi, [cur_dir_slash]
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mov esi, _char2.mt
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mov ecx, 10/2
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rep movsw
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mcall 70, func70
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test eax, eax
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jnz freemem_quit
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freemem_quit:
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mcall 68, 13, [func70.destination]
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quit:
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mcall -1
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proc do_symbol
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mov ch, FONT_HEIGHT
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.col: xor ah, ah
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xor cl, cl
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.row: lodsb
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cmp al, ' '
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setnz al
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shl al, cl
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or ah, al
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inc cl
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cmp cl, bl
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jnz .row
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add esi, 3
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mov al, ah
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stosb
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dec ch
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jnz .col
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ret
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endp
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_char1.txt db 'char.txt',0
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_char2.txt db 'char2.txt',0
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_char1.mt db 'char.mt',0
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_char2.mt db 'char2.mt',0
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func70:
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.func_number dd 5 ; function number
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.position dd 0 ; position in file
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.reserved dd 0 ; reserved
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.bytes_to_read dd 0 ; bytes to read
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.destination dd file_info
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.flag db 0 ; see file name later
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.file_name dd cur_dir ; pointer to the name of file (ASCIIZ)
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i_end:
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file_info FILEINFO
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cur_dir rb 4096
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cur_dir_slash rd 1 ; we save here position of the last '/' symbol
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stack_here rb 0x200
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stacktop:
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e_end:
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