forked from KolibriOS/kolibrios
libs_dev: refactoring, comments
git-svn-id: svn://kolibrios.org@845 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Mihail Semenyako (mike.dld)
282
programs/develop/libraries/libs-dev/libio/libio_p.asm
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282
programs/develop/libraries/libs-dev/libio/libio_p.asm
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;;================================================================================================;;
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;;//// libio_p.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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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 libio._.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 = memory allocation routine <mem.alloc*> ;;
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;> ebx = memory freeing routine <mem.free*> ;;
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;> ecx = memory reallocation routine <mem.realloc*> ;;
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;> edx = library loading routine <dll.load*> ;;
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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 libio._.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 = string (filename in most cases) <asciiz> ;;
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;> _wcard = mask expressed using wilcards (?, *, [..]) <asciiz> ;;
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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 libio._.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 libio._.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 libio._.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 = find file block <FindFileBlock*> ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) / matched file info pointer <FileInfo*> ;;
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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 libio._.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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