forked from KolibriOS/kolibrios
804 lines
32 KiB
NASM
804 lines
32 KiB
NASM
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;;================================================================================================;;
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;;//// libio.asm //// (c) mike.dld, 2006-2008 ////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;; ;;
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;; This file is part of Common development libraries (Libs-Dev). ;;
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;; ;;
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;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;;
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;; General Public License as published by the Free Software Foundation, either version 3 of the ;;
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;; License, or (at your option) any later version. ;;
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;; ;;
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;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;;
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;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;
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;; General Public License for more details. ;;
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;; ;;
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;; You should have received a copy of the GNU General Public License along with Libs-Dev. If not, ;;
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;; see <http://www.gnu.org/licenses/>. ;;
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;; ;;
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;;================================================================================================;;
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;; ;;
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;; 2007-12-10 (mike.dld) ;;
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;; changes: ;;
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;; - almost fully incompatible with previous version since return values were changed. ;;
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;; now they are more C-like ;;
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;; notes: ;;
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;; - `file.err` is not yet available ;;
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;; 2007-09-26 (mike.dld) ;;
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;; changes: ;;
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;; - modified `file.size` a bit (according to changes in FileInfo struct) ;;
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;; - added `file.find_first`, `file.find_next`, `file.find_close` ;;
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;; notes: ;;
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;; - `file.aux.match_wildcard` is exported only for testing purposes, don't ;;
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;; use it since it may be removed or renamed in next versions ;;
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;; ;;
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;;================================================================================================;;
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format MS COFF
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public @EXPORT as 'EXPORTS'
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include '../../../../proc32.inc'
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include '../../../../macros.inc'
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purge section;mov,add,sub
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include 'libio.inc'
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include 'libio_p.inc'
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section '.flat' code readable align 16
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mem.alloc dd ?
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mem.free dd ?
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mem.realloc dd ?
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dll.load dd ?
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;;================================================================================================;;
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proc lib_init ;///////////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Library entry point (called after library load) ;;
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;;------------------------------------------------------------------------------------------------;;
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;> eax = pointer to memory allocation routine ;;
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;> ebx = pointer to memory freeing routine ;;
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;> ecx = pointer to memory reallocation routine ;;
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;> edx = pointer to library loading routine ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 1 (fail) / 0 (ok) (library initialization result) ;;
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;;================================================================================================;;
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mov [mem.alloc], eax
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mov [mem.free], ebx
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mov [mem.realloc], ecx
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mov [dll.load], edx
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xor eax, eax
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ret
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endp
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;;================================================================================================;;
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proc file.aux.match_wildcard _str, _wcard ;///////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Match string against wildcard ;;
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;? Based on http://user.cs.tu-berlin.de/~schintke/references/wildcards/ ;;
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;? 1997-2001 (c) Florian Schintke ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _str = pointer to string (filename in most cases) ;;
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;> _wcard = pointer to string (mask expressed using wilcards (?, *, [..])) ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = false / true (match result) ;;
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;;================================================================================================;;
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push ecx edx esi edi
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mov dl, 1 ; fit
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mov esi, [_wcard]
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mov edi, [_str]
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.loop_wildcard:
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mov al, [esi]
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or al, al
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jz .loop_wildcard_exit
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or dl, dl
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jz .loop_wildcard_exit
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cmp byte[edi], 0
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je .loop_wildcard_exit
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cmp al, '['
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je .process_set
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cmp al, '?'
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je .process_question
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cmp al, '*'
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je .process_asterisk
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xor dl, dl
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cmp [edi], al
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jne @f
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inc dl
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@@: inc edi
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.loop_wildcard_next:
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inc esi
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jmp .loop_wildcard
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.process_set:
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inc esi
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xor dl, dl ; fit
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xor dh, dh ; negation
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mov cl, 1 ; at_beginning
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cmp byte[esi], '^'
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jne .loop_set_wildcard
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inc dh
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inc esi
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.loop_set_wildcard:
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mov al, [esi]
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cmp al, ']'
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jne @f
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or cl, cl
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jz .loop_set_wildcard_exit
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@@: or dl, dl
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jnz .loop_set_wildcard_fit
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cmp al, '-'
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jne .loop_set_wildcard_not_range
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mov ch, [esi - 1]
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cmp [esi + 1], ch
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jbe .loop_set_wildcard_not_range
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cmp byte[esi + 1], ']'
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je .loop_set_wildcard_not_range
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or cl, cl
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jnz .loop_set_wildcard_not_range
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cmp [edi], ch
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jb .loop_set_wildcard_fit
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mov ch, [esi + 1]
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cmp [edi], ch
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ja .loop_set_wildcard_fit
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mov dl, 1
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inc esi
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jmp .loop_set_wildcard_fit
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.loop_set_wildcard_not_range:
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cmp [edi], al
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jne .loop_set_wildcard_fit
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mov dl, 1
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.loop_set_wildcard_fit:
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inc esi
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xor cl, cl
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jmp .loop_set_wildcard
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.loop_set_wildcard_exit:
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or dh, dh
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jz @f
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xor dl, 1
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@@: or dl, dl
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jz @f
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inc edi
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@@:
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jmp .loop_wildcard_next
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.process_question:
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inc edi
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jmp .loop_wildcard_next
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.process_asterisk:
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mov dl, 1
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inc esi
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.loop_asterisk_del_shit:
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lodsb
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cmp byte[edi], 0
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je .loop_asterisk_del_shit_exit
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cmp al, '?'
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jne @f
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inc edi
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jmp .loop_asterisk_del_shit
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@@: cmp al, '*'
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je .loop_asterisk_del_shit
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.loop_asterisk_del_shit_exit:
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@@: cmp al, '*'
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jne @f
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lodsb
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jmp @b
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@@:
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dec esi
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cmp byte[edi], 0
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jne .process_asterisk_skip_exit
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xor dl, dl
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or al, al
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jnz @f
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inc dl
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@@: dec esi
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jmp .loop_wildcard_next
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.process_asterisk_skip_exit:
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stdcall file.aux.match_wildcard, edi, esi
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or eax, eax
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jnz .process_asterisk_not_match
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.loop_asterisk_match:
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inc edi
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.loop_asterisk_char_match:
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mov al, [esi]
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cmp [edi], al
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je .loop_asterisk_char_match_exit
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cmp byte[esi], '['
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je .loop_asterisk_char_match_exit
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cmp byte[edi], 0
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je .loop_asterisk_char_match_exit
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inc edi
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jmp .loop_asterisk_char_match
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.loop_asterisk_char_match_exit:
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cmp byte[edi], 0
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je @f
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stdcall file.aux.match_wildcard, edi, esi
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or eax, eax
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jnz .loop_asterisk_match_exit
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jmp .loop_asterisk_match
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@@:
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xor dl, dl
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.loop_asterisk_match_exit:
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.process_asterisk_not_match:
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cmp byte[esi], 0
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jne @f
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cmp byte[edi], 0
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jne @f
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mov dl, 1
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@@:
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dec esi
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jmp .loop_wildcard_next
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.loop_wildcard_exit:
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or dl, dl
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jz .exit
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@@: cmp byte[esi], '*'
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jne .exit
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inc esi
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jmp @b
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.exit:
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cmp byte[esi], 0
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je @f
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xor dl, dl
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@@: cmp byte[edi], 0
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je @f
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xor dl, dl
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@@:
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movzx eax, dl
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pop edi esi edx ecx
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ret
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endp
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;;================================================================================================;;
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proc file.aux.find_matching_file _ffb ;///////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Find file with matching attributes (`FindFileBlock.Options.Attributes`) and mask ;;
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;? (`FindFileBlock.Options.Mask`) starting from Nth (`FindFileBlock.InfoBlock.Position`) file in ;;
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;? directory (`FindFileBlock.InfoBlock.FileName`) ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ffb = pointer to FindFileBlock ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) / pointer to `FileInfo` with matched file data ;;
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;;================================================================================================;;
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push ebx edx
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mov edx, [_ffb]
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.loop_find:
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lea ebx, [edx + FindFileBlock.InfoBlock]
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mcall 70
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or eax, eax
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jnz .loop_find_error
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mov eax, [edx + FindFileBlock.Info.Attributes]
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and eax, [edx + FindFileBlock.Options.Attributes]
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jz .loop_find_next
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lea eax, [edx + FindFileBlock.Info.FileName]
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stdcall file.aux.match_wildcard, eax, [edx + FindFileBlock.Options.Mask]
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or eax, eax
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jnz .loop_find_exit
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.loop_find_next:
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inc [edx + FindFileBlock.InfoBlock.Position]
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jmp .loop_find
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.loop_find_error:
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xor eax, eax
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pop edx ebx
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ret
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.loop_find_exit:
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lea eax, [edx + FindFileBlock.Info]
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pop edx ebx
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ret
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endp
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;;================================================================================================;;
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proc file.find_first _dir, _mask, _attr ;/////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Find first file with matching attributes and mask in specified directory ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _dir = pointer to string (directory path to search in) ;;
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;> _mask = pointer to string (file mask, with use of wildcards) ;;
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;> _attr = file attributes mask (combination of FA_* constants) ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) / pointer to `FileInfo` with matched file data (acts as find descriptor) ;;
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;;================================================================================================;;
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push ebx edx
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invoke mem.alloc, sizeof.FindFileBlock
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or eax, eax
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jz .exit.error
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mov edx, eax
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mov ebx, [_attr]
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mov [edx + FindFileBlock.Options.Attributes], ebx
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mov ebx, [_mask]
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mov [edx + FindFileBlock.Options.Mask], ebx
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lea ebx, [edx + FindFileBlock.InfoBlock]
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mov [ebx + FileInfoBlock.Function], F70_READ_D
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mov [ebx + FileInfoBlock.Count], 1
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lea eax, [edx + FindFileBlock.Header]
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mov [ebx + FileInfoBlock.Buffer], eax
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mov eax, [_dir]
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mov [ebx + FileInfoBlock.FileName], eax
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stdcall file.aux.find_matching_file, edx
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pop edx ebx
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ret
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.exit.error:
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xor eax, eax
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pop edx ebx
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ret
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endp
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;;================================================================================================;;
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proc file.find_next _findd ;//////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Find next file matching criteria ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _findd = find descriptor (see `file.find_first`) ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) / pointer to `FileInfo` with matched file data (acts as find descriptor) ;;
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;;================================================================================================;;
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mov eax, [_findd]
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add eax, -sizeof.FileInfoHeader
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inc [eax + FindFileBlock.InfoBlock.Position]
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stdcall file.aux.find_matching_file, eax
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ret
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endp
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;;================================================================================================;;
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proc file.find_close _findd ;/////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Close find descriptor and free memory ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _findd = find descriptor (see `file.find_first`) ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = result of memory freeing routine ;;
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;;================================================================================================;;
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mov eax, [_findd]
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add eax, -sizeof.FileInfoHeader
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invoke mem.free, eax
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ret
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endp
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;;================================================================================================;;
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proc file.size _name ;////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Get file size ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _name = path to file (full or relative) ;;
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;;------------------------------------------------------------------------------------------------;;
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|
|
;< 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'
|