;;================================================================================================;;
;;//// libio.asm //// (c) mike.dld, 2006-2008 ////////////////////////////////////////////////////;;
;;================================================================================================;;
;; ;;
;; This file is part of Common development libraries (Libs-Dev). ;;
;; ;;
;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;;
;; General Public License as published by the Free Software Foundation, either version 3 of the ;;
;; License, or (at your option) any later version. ;;
;; ;;
;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;;
;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;
;; General Public License for more details. ;;
;; ;;
;; You should have received a copy of the GNU General Public License along with Libs-Dev. If not, ;;
;; see <http://www.gnu.org/licenses/>. ;;
;; ;;
;;================================================================================================;;
;; ;;
;; 2007-12-10 (mike.dld) ;;
;; changes: ;;
;; - almost fully incompatible with previous version since return values were changed. ;;
;; now they are more C-like ;;
;; notes: ;;
;; - `file.err` is not yet available ;;
;; 2007-09-26 (mike.dld) ;;
;; changes: ;;
;; - modified `file.size` a bit (according to changes in FileInfo struct) ;;
;; - added `file.find_first`, `file.find_next`, `file.find_close` ;;
;; notes: ;;
;; - `file.aux.match_wildcard` is exported only for testing purposes, don't ;;
;; use it since it may be removed or renamed in next versions ;;
;; ;;
;;================================================================================================;;
format MS COFF
public @EXPORT as 'EXPORTS'
include '../../../../proc32.inc'
include '../../../../macros.inc'
purge section;mov,add,sub
include 'libio.inc'
include 'libio_p.inc'
section '.flat' code readable align 16
mem.alloc dd ?
mem.free dd ?
mem.realloc dd ?
dll.load dd ?
;;================================================================================================;;
proc lib_init ;///////////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Library entry point (called after library load) ;;
;;------------------------------------------------------------------------------------------------;;
;> eax = pointer to memory allocation routine ;;
;> ebx = pointer to memory freeing routine ;;
;> ecx = pointer to memory reallocation routine ;;
;> edx = pointer to library loading routine ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 1 (fail) / 0 (ok) (library initialization result) ;;
;;================================================================================================;;
mov [mem.alloc], eax
mov [mem.free], ebx
mov [mem.realloc], ecx
mov [dll.load], edx
xor eax, eax
ret
endp
;;================================================================================================;;
proc file.aux.match_wildcard _str, _wcard ;///////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Match string against wildcard ;;
;? Based on http://user.cs.tu-berlin.de/~schintke/references/wildcards/ ;;
;? 1997-2001 (c) Florian Schintke ;;
;;------------------------------------------------------------------------------------------------;;
;> _str = pointer to string (filename in most cases) ;;
;> _wcard = pointer to string (mask expressed using wilcards (?, *, [..])) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true (match result) ;;
;;================================================================================================;;
push ecx edx esi edi
mov dl, 1 ; fit
mov esi, [_wcard]
mov edi, [_str]
.loop_wildcard:
mov al, [esi]
or al, al
jz .loop_wildcard_exit
or dl, dl
jz .loop_wildcard_exit
cmp byte[edi], 0
je .loop_wildcard_exit
cmp al, '['
je .process_set
cmp al, '?'
je .process_question
cmp al, '*'
je .process_asterisk
xor dl, dl
cmp [edi], al
jne @f
inc dl
@@: inc edi
.loop_wildcard_next:
inc esi
jmp .loop_wildcard
.process_set:
inc esi
xor dl, dl ; fit
xor dh, dh ; negation
mov cl, 1 ; at_beginning
cmp byte[esi], '^'
jne .loop_set_wildcard
inc dh
inc esi
.loop_set_wildcard:
mov al, [esi]
cmp al, ']'
jne @f
or cl, cl
jz .loop_set_wildcard_exit
@@: or dl, dl
jnz .loop_set_wildcard_fit
cmp al, '-'
jne .loop_set_wildcard_not_range
mov ch, [esi - 1]
cmp [esi + 1], ch
jbe .loop_set_wildcard_not_range
cmp byte[esi + 1], ']'
je .loop_set_wildcard_not_range
or cl, cl
jnz .loop_set_wildcard_not_range
cmp [edi], ch
jb .loop_set_wildcard_fit
mov ch, [esi + 1]
cmp [edi], ch
ja .loop_set_wildcard_fit
mov dl, 1
inc esi
jmp .loop_set_wildcard_fit
.loop_set_wildcard_not_range:
cmp [edi], al
jne .loop_set_wildcard_fit
mov dl, 1
.loop_set_wildcard_fit:
inc esi
xor cl, cl
jmp .loop_set_wildcard
.loop_set_wildcard_exit:
or dh, dh
jz @f
xor dl, 1
@@: or dl, dl
jz @f
inc edi
@@:
jmp .loop_wildcard_next
.process_question:
inc edi
jmp .loop_wildcard_next
.process_asterisk:
mov dl, 1
inc esi
.loop_asterisk_del_shit:
lodsb
cmp byte[edi], 0
je .loop_asterisk_del_shit_exit
cmp al, '?'
jne @f
inc edi
jmp .loop_asterisk_del_shit
@@: cmp al, '*'
je .loop_asterisk_del_shit
.loop_asterisk_del_shit_exit:
@@: cmp al, '*'
jne @f
lodsb
jmp @b
@@:
dec esi
cmp byte[edi], 0
jne .process_asterisk_skip_exit
xor dl, dl
or al, al
jnz @f
inc dl
@@: dec esi
jmp .loop_wildcard_next
.process_asterisk_skip_exit:
stdcall file.aux.match_wildcard, edi, esi
or eax, eax
jnz .process_asterisk_not_match
.loop_asterisk_match:
inc edi
.loop_asterisk_char_match:
mov al, [esi]
cmp [edi], al
je .loop_asterisk_char_match_exit
cmp byte[esi], '['
je .loop_asterisk_char_match_exit
cmp byte[edi], 0
je .loop_asterisk_char_match_exit
inc edi
jmp .loop_asterisk_char_match
.loop_asterisk_char_match_exit:
cmp byte[edi], 0
je @f
stdcall file.aux.match_wildcard, edi, esi
or eax, eax
jnz .loop_asterisk_match_exit
jmp .loop_asterisk_match
@@:
xor dl, dl
.loop_asterisk_match_exit:
.process_asterisk_not_match:
cmp byte[esi], 0
jne @f
cmp byte[edi], 0
jne @f
mov dl, 1
@@:
dec esi
jmp .loop_wildcard_next
.loop_wildcard_exit:
or dl, dl
jz .exit
@@: cmp byte[esi], '*'
jne .exit
inc esi
jmp @b
.exit:
cmp byte[esi], 0
je @f
xor dl, dl
@@: cmp byte[edi], 0
je @f
xor dl, dl
@@:
movzx eax, dl
pop edi esi edx ecx
ret
endp
;;================================================================================================;;
proc file.aux.find_matching_file _ffb ;///////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Find file with matching attributes (`FindFileBlock.Options.Attributes`) and mask ;;
;? (`FindFileBlock.Options.Mask`) starting from Nth (`FindFileBlock.InfoBlock.Position`) file in ;;
;? directory (`FindFileBlock.InfoBlock.FileName`) ;;
;;------------------------------------------------------------------------------------------------;;
;> _ffb = pointer to FindFileBlock ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (error) / pointer to `FileInfo` with matched file data ;;
;;================================================================================================;;
push ebx edx
mov edx, [_ffb]
.loop_find:
lea ebx, [edx + FindFileBlock.InfoBlock]
mcall 70
or eax, eax
jnz .loop_find_error
mov eax, [edx + FindFileBlock.Info.Attributes]
and eax, [edx + FindFileBlock.Options.Attributes]
jz .loop_find_next
lea eax, [edx + FindFileBlock.Info.FileName]
stdcall file.aux.match_wildcard, eax, [edx + FindFileBlock.Options.Mask]
or eax, eax
jnz .loop_find_exit
.loop_find_next:
inc [edx + FindFileBlock.InfoBlock.Position]
jmp .loop_find
.loop_find_error:
xor eax, eax
pop edx ebx
ret
.loop_find_exit:
lea eax, [edx + FindFileBlock.Info]
pop edx ebx
ret
endp
;;================================================================================================;;
proc file.find_first _dir, _mask, _attr ;/////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Find first file with matching attributes and mask in specified directory ;;
;;------------------------------------------------------------------------------------------------;;
;> _dir = pointer to string (directory path to search in) ;;
;> _mask = pointer to string (file mask, with use of wildcards) ;;
;> _attr = file attributes mask (combination of FA_* constants) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (error) / pointer to `FileInfo` with matched file data (acts as find descriptor) ;;
;;================================================================================================;;
push ebx edx
invoke mem.alloc, sizeof.FindFileBlock
or eax, eax
jz .exit.error
mov edx, eax
mov ebx, [_attr]
mov [edx + FindFileBlock.Options.Attributes], ebx
mov ebx, [_mask]
mov [edx + FindFileBlock.Options.Mask], ebx
lea ebx, [edx + FindFileBlock.InfoBlock]
mov [ebx + FileInfoBlock.Function], F70_READ_D
mov [ebx + FileInfoBlock.Count], 1
lea eax, [edx + FindFileBlock.Header]
mov [ebx + FileInfoBlock.Buffer], eax
mov eax, [_dir]
mov [ebx + FileInfoBlock.FileName], eax
stdcall file.aux.find_matching_file, edx
pop edx ebx
ret
.exit.error:
xor eax, eax
pop edx ebx
ret
endp
;;================================================================================================;;
proc file.find_next _findd ;//////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Find next file matching criteria ;;
;;------------------------------------------------------------------------------------------------;;
;> _findd = find descriptor (see `file.find_first`) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (error) / pointer to `FileInfo` with matched file data (acts as find descriptor) ;;
;;================================================================================================;;
mov eax, [_findd]
add eax, -sizeof.FileInfoHeader
inc [eax + FindFileBlock.InfoBlock.Position]
stdcall file.aux.find_matching_file, eax
ret
endp
;;================================================================================================;;
proc file.find_close _findd ;/////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Close find descriptor and free memory ;;
;;------------------------------------------------------------------------------------------------;;
;> _findd = find descriptor (see `file.find_first`) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = result of memory freeing routine ;;
;;================================================================================================;;
mov eax, [_findd]
add eax, -sizeof.FileInfoHeader
invoke mem.free, eax
ret
endp
;;================================================================================================;;
proc file.size _name ;////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Get file size ;;
;;------------------------------------------------------------------------------------------------;;
;> _name = path to file (full or relative) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (error) / file size (in bytes, up to 2G) ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
locals
loc_info FileInfoBlock
endl
lea ebx, [loc_info]
invoke mem.alloc, 40
push eax
mov [ebx + FileInfoBlock.Function], F70_GETATTR_FD
mov [ebx + FileInfoBlock.Buffer], eax
mov byte[ebx + FileInfoBlock.FileName - 1], 0
mov eax, [_name]
mov [ebx + FileInfoBlock.FileName], eax
mcall 70
pop ebx
push eax
mov eax, ebx
mov ebx, [ebx + FileInfo.FileSizeLow]
invoke mem.free, eax
pop eax
ret
endp
;;================================================================================================;;
proc file.open _name, _mode ;/////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Open file ;;
;;------------------------------------------------------------------------------------------------;;
;> _name = path to file (full or relative) ;;
;> _mode = mode to open file in (combination of O_* constants) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (error) / file descriptor ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
locals
loc_info FileInfoBlock
loc_buf rb 40
endl
push ebx esi edi
xor ebx, ebx
invoke mem.alloc, sizeof.InternalFileInfo
or eax, eax
jz .exit_error
mov ebx, eax
push [_mode]
pop [ebx + InternalFileInfo.Mode]
mov [ebx + InternalFileInfo.Position], 0
lea edi, [ebx + InternalFileInfo.FileName]
mov esi, [_name]
mov ecx, 260 / 4
cld
rep movsd
.get_info:
push ebx
mov [loc_info.Function], F70_GETATTR_FD
lea eax, [loc_buf]
mov [loc_info.Buffer], eax
mov byte[loc_info.FileName - 1], 0
mov eax, [_name]
mov [loc_info.FileName], eax
lea ebx, [loc_info]
mcall 70
pop ebx
or eax, eax
jz @f
cmp eax, 6
jne .exit_error.ex
@@:
mov eax, ebx
pop edi esi ebx
ret
.exit_error.ex:
test [_mode], O_CREATE
jz .exit_error
push ebx
mov [loc_info.Function], F70_CREATE_F
xor eax, eax
mov [loc_info.Position], eax
mov [loc_info.Flags], eax
mov [loc_info.Count], eax
lea ebx, [loc_info]
mcall 70
pop ebx
or eax, eax
jz .get_info
.exit_error:
invoke mem.free, ebx
xor eax, eax
pop edi esi ebx
ret
endp
;;================================================================================================;;
proc file.read _filed, _buf, _buflen ;////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Read data from file ;;
;;------------------------------------------------------------------------------------------------;;
;> _filed = file descriptor (see `file.open`) ;;
;> _buf = pointer to buffer to put read data to ;;
;> _buflen = buffer size (number of bytes to be read from file) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (error) / number of bytes read ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
locals
loc_info FileInfoBlock
endl
push ebx esi edi
mov ebx, [_filed]
test [ebx + InternalFileInfo.Mode], O_READ
jz .exit_error
xor eax, eax
mov [loc_info.Function], F70_READ_F
mov [loc_info.Flags], eax
mov byte[loc_info.FileName - 1], al
push [ebx+InternalFileInfo.Position] [_buflen] [_buf]
pop [loc_info.Buffer] [loc_info.Count] [loc_info.Position]
lea eax, [ebx + InternalFileInfo.FileName]
mov [loc_info.FileName], eax
lea ebx, [loc_info]
mcall 70
or eax, eax
jz @f
cmp eax, 6
jne .exit_error
@@:
mov eax, ebx
mov ebx, [_filed]
add [ebx + InternalFileInfo.Position], eax
pop edi esi ebx
ret
.exit_error:
or eax, -1
pop edi esi ebx
ret
endp
;;================================================================================================;;
proc file.write _filed, _buf, _buflen ;///////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Write data to file ;;
;;------------------------------------------------------------------------------------------------;;
;> _filed = file descriptor (see `file.open`) ;;
;> _buf = pointer to buffer to get write data from ;;
;> _buflen = buffer size (number of bytes to be written to file) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (error) / number of bytes written ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
locals
loc_info FileInfoBlock
endl
push ebx esi edi
mov ebx, [_filed]
test [ebx + InternalFileInfo.Mode], O_WRITE
jz .exit_error
stdcall file.eof?, [_filed]
or eax, eax
js .exit_error
jz @f
stdcall file.truncate, [_filed]
@@:
mov [loc_info.Function], F70_WRITE_F
xor eax, eax
mov [loc_info.Flags], eax
mov byte[loc_info.FileName - 1], al
push [ebx + InternalFileInfo.Position] [_buflen] [_buf]
pop [loc_info.Buffer] [loc_info.Count] [loc_info.Position]
lea eax, [ebx + InternalFileInfo.FileName]
mov [loc_info.FileName], eax
lea ebx, [loc_info]
mcall 70
or eax, eax
jnz .exit_error
@@:
mov eax, ebx
mov ebx, [_filed]
add [ebx + InternalFileInfo.Position],eax
pop edi esi ebx
ret
.exit_error:
or eax, -1
pop edi esi ebx
ret
endp
;;================================================================================================;;
proc file.seek _filed, _where, _origin ;//////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Set file pointer position ;;
;;------------------------------------------------------------------------------------------------;;
;> _filed = file descriptor (see `file.open`) ;;
;> _where = position in file (in bytes) counted from specified origin ;;
;> _origin = origin from where to set the position (one of SEEK_* constants) ;;
;> SEEK_SET - from beginning of file ;;
;> SEEK_CUR - from current pointer position ;;
;> SEEK_END - from end of file ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (error) / 0 ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
push ebx ecx edx
mov ecx, [_filed]
lea eax, [ecx + InternalFileInfo.FileName]
stdcall file.size, eax
or eax, eax
jnz .exit_error
mov edx, [_where]
cmp [_origin], SEEK_SET
jne .n_set
mov [ecx + InternalFileInfo.Position], edx
jmp .exit_ok
.n_set:
cmp [_origin], SEEK_CUR
jne .n_cur
add [ecx + InternalFileInfo.Position], edx
jmp .exit_ok
.n_cur:
cmp [_origin], SEEK_END
jne .exit_error
neg edx
add edx, ebx
mov [ecx + InternalFileInfo.Position], edx
.exit_ok:
cmp [ecx + InternalFileInfo.Position], 0
jge @f
mov [ecx + InternalFileInfo.Position], 0
@@:
; cmp ebx, [ecx+InternalFileInfo.Position]
; jae @f
; mov [ecx + InternalFileInfo.Position], ebx
; @@:
xor eax, eax
pop edx ecx ebx
ret
.exit_error:
or eax, -1
pop edx ecx ebx
ret
endp
;;================================================================================================;;
proc file.eof? _filed ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Determine if file pointer is at the end of file ;;
;;------------------------------------------------------------------------------------------------;;
;> _filed = file descriptor (see `file.open`) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
push ebx ecx
mov ecx, [_filed]
lea eax, [ecx + InternalFileInfo.FileName]
stdcall file.size, eax
or eax, eax
jnz .exit_error
xor eax, eax
cmp [ecx + InternalFileInfo.Position], ebx
jb @f
inc eax
@@: pop ecx ebx
ret
.exit_error:
or eax, -1
pop ecx ebx
ret
endp
;;================================================================================================;;
proc file.truncate _filed ;///////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Truncate file size to current file pointer position ;;
;;------------------------------------------------------------------------------------------------;;
;> _filed = file descriptor (see `file.open`) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (error) / 0 ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
locals
loc_info FileInfoBlock
endl
push ebx esi edi
mov ebx, [_filed]
test [ebx + InternalFileInfo.Mode], O_WRITE
jz .exit_error
mov [loc_info.Function], F70_SETSIZE_F
mov eax, [ebx + InternalFileInfo.Position]
mov [loc_info.Position], eax
xor eax, eax
mov [loc_info.Flags], eax
mov [loc_info.Count], eax
mov [loc_info.Buffer], eax
mov byte[loc_info.FileName - 1], al
lea eax, [ebx + InternalFileInfo.FileName]
mov [loc_info.FileName], eax
lea ebx, [loc_info]
mcall 70
cmp eax, 2
je .exit_error
cmp eax, 8
je .exit_error
@@: xor eax, eax
pop edi esi ebx
ret
.exit_error:
or eax, -1
pop edi esi ebx
ret
endp
file.seteof equ file.truncate
;;================================================================================================;;
proc file.tell _filed ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Get current file pointer position ;;
;;------------------------------------------------------------------------------------------------;;
;> _filed = file descriptor (see `file.open`) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (error) / file pointer position ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
mov eax, [_filed]
mov eax, [eax + InternalFileInfo.Position]
ret
endp
;;================================================================================================;;
proc file.close _filed ;//////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Close file ;;
;;------------------------------------------------------------------------------------------------;;
;> _filed = file descriptor (see `file.open`) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (error) / file pointer position ;;
;;------------------------------------------------------------------------------------------------;;
;# call `file.err` to obtain extended error information ;;
;;================================================================================================;;
mov eax, [_filed]
mov [eax + InternalFileInfo.Mode], 0
mov [eax + InternalFileInfo.FileName], 0
invoke mem.free, eax
xor eax, eax
ret
endp
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;! Exported functions section ;;
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
align 16
@EXPORT:
export \
lib_init , 'lib_init' , \
0x00030003 , 'version' , \
file.find_first , 'file.find_first' , \
file.find_next , 'file.find_next' , \
file.find_close , 'file.find_close' , \
file.size , 'file.size' , \
file.open , 'file.open' , \
file.read , 'file.read' , \
file.write , 'file.write' , \
file.seek , 'file.seek' , \
file.tell , 'file.tell' , \
file.eof? , 'file.eof?' , \
file.seteof , 'file.seteof' , \
file.truncate , 'file.truncate' , \
file.close , 'file.close'