1228,117 → 1228,7 |
lea ecx, [ebp+FAT.Lock] |
jmp mutex_unlock |
|
; \begin{diamond} |
uni2ansi_str: |
; convert UNICODE zero-terminated string to ASCII-string (codepage 866) |
; in: esi->source, edi->buffer (may be esi=edi) |
; destroys: eax,esi,edi |
lodsw |
test ax, ax |
jz .done |
cmp ax, 0x80 |
jb .ascii |
cmp ax, 0x401 |
jz .yo1 |
cmp ax, 0x451 |
jz .yo2 |
cmp ax, 0x410 |
jb .unk |
cmp ax, 0x440 |
jb .rus1 |
cmp ax, 0x450 |
jb .rus2 |
.unk: |
mov al, '_' |
jmp .doit |
.yo1: |
mov al, 0xF0 ; 'Ё' |
jmp .doit |
.yo2: |
mov al, 0xF1 ; 'ё' |
jmp .doit |
.rus1: |
; 0x410-0x43F -> 0x80-0xAF |
add al, 0x70 |
jmp .doit |
.rus2: |
; 0x440-0x44F -> 0xE0-0xEF |
add al, 0xA0 |
.ascii: |
.doit: |
stosb |
jmp uni2ansi_str |
.done: |
mov byte [edi], 0 |
ret |
|
ansi2uni_char: |
; convert ANSI character in al to UNICODE character in ax, using cp866 encoding |
mov ah, 0 |
; 0x00-0x7F - trivial map |
cmp al, 0x80 |
jb .ret |
; 0x80-0xAF -> 0x410-0x43F |
cmp al, 0xB0 |
jae @f |
add ax, 0x410-0x80 |
.ret: |
ret |
@@: |
; 0xE0-0xEF -> 0x440-0x44F |
cmp al, 0xE0 |
jb .unk |
cmp al, 0xF0 |
jae @f |
add ax, 0x440-0xE0 |
ret |
; 0xF0 -> 0x401 |
; 0xF1 -> 0x451 |
@@: |
cmp al, 0xF0 ; 'Ё' |
jz .yo1 |
cmp al, 0xF1 ; 'ё' |
jz .yo2 |
.unk: |
mov al, '_' ; ah=0 |
ret |
.yo1: |
mov ax, 0x401 |
ret |
.yo2: |
mov ax, 0x451 |
ret |
|
char_toupper: |
; convert character to uppercase, using cp866 encoding |
; in: al=symbol |
; out: al=converted symbol |
cmp al, 'a' |
jb .ret |
cmp al, 'z' |
jbe .az |
cmp al, 0xF1 ; 'ё' |
jz .yo1 |
cmp al, 0xA0 ; 'а' |
jb .ret |
cmp al, 0xE0 ; 'р' |
jb .rus1 |
cmp al, 0xEF ; 'я' |
ja .ret |
; 0xE0-0xEF -> 0x90-0x9F |
sub al, 0xE0-0x90 |
.ret: |
ret |
.rus1: |
; 0xA0-0xAF -> 0x80-0x8F |
.az: |
and al, not 0x20 |
ret |
.yo1: |
; 0xF1 -> 0xF0 |
dec ax |
ret |
|
fat_get_name: |
; in: edi->FAT entry |
; out: CF=1 - no valid entry |
3751,5 → 3641,3 |
pop edi |
xor eax, eax |
ret |
|
; \end{diamond} |