164 lines
3.3 KiB
PHP
164 lines
3.3 KiB
PHP
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; esi is ptr to nick
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; ebx is ptr to window
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align 4
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user_add:
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cmp [ebx + window.users], MAX_USERS
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jae fail
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mov edi, [ebx + window.data_ptr]
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add edi, window_data.names
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mov ebp, [ebx + window.users]
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inc ebp ; CHECKME
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push esi edi
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.restart:
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mov ecx, MAX_NICK_LEN
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.loop1:
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lodsb
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cmp al, '@'
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jne @f
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mov al, ' ' ; give @ highest priority
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@@:
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cmp al, 'A'
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jb @f
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cmp al, 'Z'
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ja @f
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add al, 'a' - 'A' ; convert to lowercase
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@@:
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dec ecx
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jz .got_it
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.loop2:
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mov dl, [edi]
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cmp dl, 0
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je .got_it
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cmp dl, '@'
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jne @f
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mov dl, ' ' ; give @ highest priority
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@@:
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cmp dl, 'A'
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jb @f
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cmp dl, 'Z'
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ja @f
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add dl, 'a' - 'A' ; convert to lowercase
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@@:
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cmp al, dl
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jb .got_it
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je .check_next
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pop edi esi
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add edi, MAX_NICK_LEN
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push esi edi
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dec ebp
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jnz .restart
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.check_next:
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inc edi
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jmp .loop1
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.got_it:
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pop edi esi
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; OK, insert it here..
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; mov all trailing usernames by MAX_NICK_LEN bytes
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push esi edi
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mov esi, [ebx + window.data_ptr]
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add esi, window_data.names + MAX_NICK_LEN * (MAX_USERS - 1)
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mov ecx, esi
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sub ecx, edi
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add ecx, MAX_NICK_LEN
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shr ecx, 2
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lea edi, [esi + MAX_NICK_LEN]
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std
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rep movsd
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cld
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pop edi esi
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; Now insert our new username
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mov ecx, MAX_NICK_LEN-1
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.fill:
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lodsb
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cmp al, ' '
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je .done
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cmp al, '!'
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je .done
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stosb
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loop .fill
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.done:
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xor al, al
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stosb
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inc [ebx + window.users]
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ret
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; esi is ptr to nick
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; ebx is ptr to window
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align 4
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user_remove:
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call user_find
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jz fail
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lea esi, [edi + MAX_NICK_LEN]
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mov ecx, [ebx + window.data_ptr]
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add ecx, window_data.names + MAX_NICK_LEN * MAX_USERS
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sub ecx, esi
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shr ecx, 2
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rep movsd
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dec [ebx + window.users]
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xor eax, eax
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ret
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; IN:
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; esi is ptr to nick
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; ebx is ptr to window
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; OUT:
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; edi is ptr to nick in userlist
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align 4
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user_find:
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mov eax, [ebx + window.users]
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test eax, eax
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jz fail
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mov edi, [ebx + window.data_ptr]
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add edi, window_data.names
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.loop:
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push esi edi
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mov ecx, MAX_NICK_LEN
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repe cmpsb
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cmp byte[edi-1], 0
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je .got_it
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; TODO: check byte[esi] too!
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pop edi esi
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add edi, MAX_NICK_LEN
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dec eax
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jnz .loop
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jmp fail
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.got_it:
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pop edi esi
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test edi, edi ; to clear zero flag
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ret
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fail:
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xor edi, edi
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ret |