forked from KolibriOS/kolibrios
252 lines
4.5 KiB
NASM
252 lines
4.5 KiB
NASM
;-----------------------------------------------------------------------------
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put_to_clipboard:
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; we have allocated memory?
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mov edi,[clipboard_buf]
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test edi,edi
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jz .end
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; convert from Tinypad format to the kernel clipboard format
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add edi,3*4
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mov esi,[copy_buf]
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mov ecx,[copy_count]
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cld
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;--------------------------------------
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@@:
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push ecx
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lodsd
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mov ecx,eax
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lodsw
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rep movsb
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mov ax,0x0a0d
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stosw
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; mov ax,0x0d
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; stosb
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pop ecx
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dec ecx
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jnz @b
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xor eax,eax
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stosb
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; building the clipboard slot header
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mov esi,[clipboard_buf]
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sub edi,esi
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mov [esi],edi ; clipboard area size
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xor eax,eax
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mov [esi+4],eax ; ; type 'text'
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inc eax
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mov [esi+8],eax ; cp866 text encoding
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; put slot to the kernel clipboard
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mov edx,[clipboard_buf]
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mov ecx,[edx]
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mcall 54,2
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; remove unnecessary memory area
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xor eax,eax
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stdcall mem.ReAlloc,[clipboard_buf],eax
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mov [clipboard_buf],eax
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xor eax,eax
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mov [copy_size],eax
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mov [copy_count],eax
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stdcall mem.ReAlloc,[copy_buf],eax
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mov [copy_buf],eax
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;--------------------------------------
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.end:
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ret
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;-----------------------------------------------------------------------------
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get_from_clipboard:
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pushad
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mcall 54,0
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; no slots of clipboard ?
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test eax,eax
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jz .exit
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; main list area not found ?
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inc eax
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test eax,eax
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jz .exit
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sub eax,2
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mov ecx,eax
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mcall 54,1
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; main list area not found ?
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inc eax
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test eax,eax
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jz .exit
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; error ?
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sub eax,2
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test eax,eax
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jz .exit
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inc eax
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mov [clipboard_buf],eax
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; check contents of container
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mov ebx,[eax+4]
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; check for text
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test ebx,ebx
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jnz .no_valid_text
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mov ebx,[eax+8]
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; check for cp866
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cmp bl,1
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jz .yes_valid_text
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.no_valid_text:
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xor eax,eax
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mov [copy_size],eax
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jmp .remove_area
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;--------------------------------------
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.yes_valid_text:
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call know_number_line_breaks
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mov [copy_count],ebx
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mov eax,[clipboard_buf]
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sub esi,eax
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mov [eax],esi
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shl ebx,1
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lea ebx,[ebx*3]
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mov eax,[clipboard_buf]
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mov eax,[eax]
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sub eax,4*3
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add eax,ebx
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mov [copy_size],eax
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stdcall mem.ReAlloc,[copy_buf],eax
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mov [copy_buf],eax
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call convert_clipboard_buf_to_copy_buf
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; remove unnecessary memory area
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.remove_area:
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xor eax,eax
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stdcall mem.ReAlloc,[clipboard_buf],eax
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mov [clipboard_buf],eax
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;--------------------------------------
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.exit:
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popad
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ret
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;-----------------------------------------------------------------------------
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convert_clipboard_buf_to_copy_buf:
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mov edi,[copy_buf]
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mov ebx,edi
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add edi,6
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mov eax,[clipboard_buf]
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mov esi,eax
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add esi,4*3
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mov ecx,[eax]
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sub ecx,4*3
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xor edx,edx
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cld
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;--------------------------------------
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.loop:
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lodsb
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test al,al
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jz .inc_counter ;.end_of_data
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cmp al,0x0d
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je .check_0x0a
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cmp al,0x0a
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je .inc_counter
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dec ecx
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jz .end_of_data
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stosb
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jmp .loop
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;--------------------------------------
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.check_0x0a:
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dec ecx
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jz .end_of_data
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cmp [esi],byte 0x0a
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jne @f
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lodsb
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;--------------------------------------
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.inc_counter:
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dec ecx
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jz .end_of_data
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;--------------------------------------
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@@:
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mov eax,edi
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sub eax,ebx
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sub eax,6
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.@@111:
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mov [ebx],eax
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test edx,edx
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jz @f
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test eax,eax
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jz @f
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mov [ebx+4],word EDITOR_LINE_FLAG_MOFIFIED
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@@:
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mov ebx,edi
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add edi,6
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inc edx
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jmp .loop
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;--------------------------------------
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.end_of_data:
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sub edi,[copy_buf]
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sub edi,6
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mov [copy_size],edi
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ret
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;-----------------------------------------------------------------------------
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know_number_line_breaks:
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; to know the number of line breaks
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mov eax,[clipboard_buf]
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mov esi,eax
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add esi,4*3
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mov ecx,[eax]
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sub ecx,4*3
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xor ebx,ebx
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cld
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;--------------------------------------
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@@:
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lodsb
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test al,al
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jz .end_of_data_1
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cmp al,0x0d
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je .check_0x0a
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cmp al,0x0a
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je .inc_counter
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dec ecx
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jnz @b
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jmp .end_of_data
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;--------------------------------------
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.check_0x0a:
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inc ebx
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dec ecx
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jz .end_of_data
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cmp [esi],byte 0x0a
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jne @b
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lodsb
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dec ecx
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jnz @b
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jmp .end_of_data
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;--------------------------------------
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.inc_counter:
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inc ebx
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dec ecx
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jnz @b
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;--------------------------------------
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.end_of_data_1:
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cmp [esi-2],byte 0x0d
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je .end_of_data
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cmp [esi-2],byte 0x0a
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je .end_of_data
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inc ebx
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inc esi
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;--------------------------------------
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.end_of_data:
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ret
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;----------------------------------------------------------------------------- |