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;;================================================================================================;;

;;//// libini_p.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 ;;

;; Lesser General Public License as published by the Free Software Foundation, either version 2.1 ;;

;; 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  ;;

;; Lesser General Public License for more details.                                                ;;

;;                                                                                                ;;

;; You should have received a copy of the GNU Lesser General Public License along with Libs-Dev.  ;;

;; If not, see .                                                    ;;

;;                                                                                                ;;

;;================================================================================================;;

mem.alloc   dd ?

mem.free    dd ?

mem.realloc dd ?

dll.load    dd ?

;;================================================================================================;;

proc libini._.init ;//////////////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? Library entry point (called after library load)                                                ;;

;;------------------------------------------------------------------------------------------------;;

;> eax = memory allocation routine                                                    ;;

;> ebx = memory freeing routine                                                        ;;

;> ecx = memory reallocation routine                                                ;;

;> edx = 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

	invoke	dll.load, @IMPORT

	or	eax, eax

	jz	.ok

	xor	eax, eax

	inc	eax

	ret

  .ok:	xor	eax,eax

	ret

endp

;;================================================================================================;;

proc libini._.unget_char _f ;/////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	eax ecx

	mov	ecx, [_f]

	inc	[ecx + IniFile.cnt]

	dec	esi

	mov	eax, [ecx + IniFile.bsize]

	cmp	[ecx + IniFile.cnt], eax

	jle	@f

	stdcall libini._.unload_block, [_f]

    @@: pop	ecx eax

	ret

endp

;;================================================================================================;;

proc libini._.get_char _f ;///////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	mov	ecx, [_f]

	dec	[ecx + IniFile.cnt]

	jns	@f

	stdcall libini._.preload_block, [_f]

	dec	[ecx + IniFile.cnt]

    @@: lodsb

	ret

endp

;;================================================================================================;;

proc libini._.skip_nonblanks _f ;/////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	mov	ecx, [_f]

    @@: stdcall libini._.get_char, [_f]

	cmp	al, 32

	je	@b

	cmp	al, 13

	je	@b

	cmp	al, 10

	je	@b

	cmp	al, 9

	je	@b

	cmp	al, ini.COMMENT_CHAR

	jne	@f

	stdcall libini._.skip_line, [_f]

	jmp	@b

    @@: stdcall libini._.unget_char, [_f]

	ret

endp

;;================================================================================================;;

proc libini._.skip_spaces _f ;////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	mov	ecx, [_f]

    @@: stdcall libini._.get_char, [_f]

	cmp	al, 32

	je	@b

	cmp	al, 9

	je	@b

    @@: stdcall libini._.unget_char, [_f]

	ret

endp

;;================================================================================================;;

proc libini._.skip_line _f ;//////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	mov	ecx, [_f]

    @@: stdcall libini._.get_char, [_f]

	or	al, al

	jz	@f

	cmp	al, 13

	je	@f

	cmp	al, 10

	jne	@b

    @@: stdcall libini._.unget_char, [_f]

	ret

endp

;;================================================================================================;;

proc libini._.unload_block _f ;///////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	eax ebx ecx

	mov	ebx, [_f]

	mov	eax, [ebx + IniFile.pos]

	add	eax, -ini.BLOCK_SIZE

	invoke	file.seek, [ebx + IniFile.fh], eax, SEEK_SET

	stdcall libini._.preload_block, ebx

	add	esi, eax

	mov	[ebx + IniFile.cnt], 0

	pop	ecx ebx eax

	ret

endp

;;================================================================================================;;

proc libini._.preload_block _f ;//////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	eax ebx ecx

	mov	ebx, [_f]

    @@: mov	esi, [ebx + IniFile.buf]

	push	edi

	mov	edi, esi

	mov	ecx, ini.BLOCK_SIZE / 4

	xor	eax, eax

	rep	stosd

	pop	edi

	invoke	file.tell, [ebx + IniFile.fh]

	mov	[ebx + IniFile.pos], eax

	invoke	file.read, [ebx + IniFile.fh], esi, ini.BLOCK_SIZE

	mov	esi,[ebx + IniFile.buf]

	cmp	eax,ini.BLOCK_SIZE

	jl	@f

    @@: mov	[ebx + IniFile.cnt], eax

	mov	[ebx + IniFile.bsize], eax

	pop	ecx ebx eax

	ret

endp

;;================================================================================================;;

proc libini._.reload_block _f ;///////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	eax ebx ecx

	mov	ebx, [_f]

	push	[ebx + IniFile.bsize]

	push	esi [ebx + IniFile.cnt]

	invoke	file.seek, [ebx + IniFile.fh], [ebx + IniFile.pos], SEEK_SET

	stdcall libini._.preload_block, ebx

	pop	[ebx + IniFile.cnt] esi

	pop	eax

	sub	eax,[ebx + IniFile.bsize]

	sub	[ebx + IniFile.cnt], eax

	pop	ecx ebx eax

	ret

endp

; f_info - contains current file block number

; esi    - position in block from where to shift

; ecx    - number of bytes to shift by

;;================================================================================================;;

proc libini._.shift_content _f, _delta ;//////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? Shift file content starting from cursor position (~ delete)                                    ;;

;? Content is copied by 'delta' bytes up/down                                                     ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< eax = -1 (fail) / 0 (ok)                                                                       ;;

;;================================================================================================;;

locals

  buf dd ?

endl

	xor	eax, eax

	cmp	[_delta], 0

	je	.skip

	push	ebx ecx

	invoke	mem.alloc, ini.BLOCK_SIZE

	or	eax, eax

	jz	.fail

	mov	[buf], eax

	cmp	[_delta], 0

	jl	.down

	mov	ebx, [_f]

	mov	ecx, [ebx + IniFile.cnt]

	mov	ebx, [ebx + IniFile.fh]

	invoke	file.tell, ebx

	sub	eax, ecx

	invoke	file.seek, ebx, eax, SEEK_SET

    @@: invoke	file.seek, ebx, [_delta], SEEK_CUR

	invoke	file.eof?, ebx

	or	eax, eax

	jnz	.done

	invoke	file.read, ebx, [buf], ini.BLOCK_SIZE

	mov	ecx, eax

	mov	eax, [_delta]

	neg	eax

	sub	eax, ecx

	invoke	file.seek, ebx, eax, SEEK_CUR

	invoke	file.write, ebx, [buf], ecx

	jmp	@b

  .done:

	mov	eax, [_delta]

	neg	eax

	invoke	file.seek, ebx, eax, SEEK_CUR

	invoke	file.seteof, ebx

	stdcall libini._.reload_block, [_f]

	invoke	mem.free, [buf]

	pop	ecx ebx

  .skip:

	ret

  .fail:

	or	eax, -1

	pop	ecx ebx

	ret

  .down:

	neg	[_delta]

	mov	ebx, [_f]

	mov	ecx, [ebx + IniFile.cnt]

	mov	ebx, [ebx + IniFile.fh]

	invoke	file.tell, ebx

	sub	eax, ecx

	lea	edx, [eax - 1]

	push	edx

    @@: invoke	file.seek, ebx, edx, SEEK_SET

	invoke	file.eof?, ebx

	or	eax, eax

	jnz	@f

	add	edx, ini.BLOCK_SIZE

	jmp	@b

    @@: cmp	edx, [esp]

	je	.skip.2

	add	edx, -ini.BLOCK_SIZE

	cmp	edx, [esp]

	jl	@f

	invoke	file.seek, ebx, edx, SEEK_SET

	invoke	file.read, ebx, [buf], ini.BLOCK_SIZE

	mov	ecx, eax

	mov	eax, [_delta]

	sub	eax, ecx

	invoke	file.seek, ebx, eax, SEEK_CUR

	invoke	file.write, ebx, [buf], ecx

	jmp	@b

    @@:

  .skip.2:

	add	esp, 4

	stdcall libini._.reload_block, [_f]

	invoke	mem.free, [buf]

	pop	ecx ebx

	ret

endp

;;================================================================================================;;

proc libini._.get_value_length _f ;///////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	ebx ecx edx eax

	mov	ebx, [_f]

	invoke	file.tell, [ebx + IniFile.fh]

	push	esi [ebx + IniFile.cnt] [ebx + IniFile.pos]

	sub	eax, [ebx + IniFile.cnt]

	mov	edx, eax

	stdcall libini._.skip_line, [_f]

	invoke	file.tell, [ebx + IniFile.fh]

	sub	eax, [ebx + IniFile.cnt]

	sub	eax, edx

	mov	[esp + 4 * 3], eax

	pop	eax

	invoke	file.seek, [ebx + IniFile.fh], eax, SEEK_SET

	stdcall libini._.preload_block, [_f]

	pop	[ebx + IniFile.cnt] esi

	pop	eax edx ecx ebx

	ret

endp

;;================================================================================================;;

proc libini._.string_copy ;///////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

    @@: lodsb

	or	al, al

	jz	@f

	stosb

	jmp	@b

    @@: ret

endp

;;================================================================================================;;

proc libini._.find_next_section _f ;//////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	ebx edi

    @@: stdcall libini._.skip_nonblanks, [_f]

	cmp	al, '['

	je	@f

	or	al, al

	jz	.exit_error

	stdcall libini._.skip_line, [_f]

	or	al, al

	jz	.exit_error

	jmp	@b

    @@:

	pop	edi ebx

	xor	eax, eax

	ret

  .exit_error:

	pop	edi ebx

	or	eax, -1

	ret

endp

;;================================================================================================;;

proc libini._.find_section _f, _sec_name ;////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? Find section in file                                                                           ;;

;? Search is performed from the beginning of file                                                 ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< eax = -1 (fail) / 0 (ok)                                                                       ;;

;< [_f.pos] = new cursor position (right after ']' char if eax = 0, at the end of file otherwise) ;;

;;================================================================================================;;

	push	ebx edi

	mov	ecx, [_f]

	invoke	file.seek, [ecx + IniFile.fh], 0, SEEK_SET

	stdcall libini._.preload_block, [_f]

  .next_section:

	stdcall libini._.find_next_section, [_f]

	or	eax, eax

	jnz	.exit_error

	stdcall libini._.get_char, [_f]

	stdcall libini._.skip_spaces, [_f]

	mov	edi, [_sec_name]

    @@: stdcall libini._.get_char, [_f]

	cmp	al, ']'

	je	@f

	or	al, al

	jz	.exit_error

	cmp	al, 13

	je	.next_section

	cmp	al, 10

	je	.next_section

	scasb

	je	@b

	cmp	byte[edi - 1], 0

	jne	.next_section

	dec	edi

	stdcall libini._.unget_char, [_f]

	stdcall libini._.skip_spaces, [_f]

	stdcall libini._.get_char, [_f]

	cmp	al, ']'

	jne	.next_section

    @@:

	cmp	byte[edi], 0

	jne	.next_section

	pop	edi ebx

	xor	eax, eax

	ret

  .exit_error:

	pop	edi ebx

	or	eax, -1

	ret

endp

;;================================================================================================;;

proc libini._.find_key _f, _key_name ;////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? Find key in section                                                                            ;;

;? Search is performed within current section starting from cursor position                       ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< eax = -1 (fail) / 0 (ok)                                                                       ;;

;< [_f.pos] = new cursor position (right after '=' char if eax = 0, at the end of file or right   ;;

;<            before '[' char otherwise)                                                          ;;

;;================================================================================================;;

	push	ebx edi

  .next_value:

	mov	edi, [_key_name]

	stdcall libini._.skip_line, [_f]

	stdcall libini._.skip_nonblanks, [_f]

	or	al, al

	jz	.exit_error

	cmp	al, '['

	je	.exit_error

    @@: stdcall libini._.get_char, [_f]

	or	al, al

	jz	.exit_error

	cmp	al, '='

	je	@f

	scasb

	je	@b

	cmp	byte[edi - 1], 0

	jne	.next_value

	dec	edi

	stdcall libini._.unget_char, [_f]

	stdcall libini._.skip_spaces, [_f]

	stdcall libini._.get_char, [_f]

	cmp	al, '='

	je	@f

	jmp	.next_value

    @@:

	cmp	byte[edi], 0

	jne	.next_value

	pop	edi ebx

	xor	eax, eax

	ret

  .exit_error:

	pop	edi ebx

	or	eax, -1

	ret

endp

;;================================================================================================;;

proc libini._.low.read_value _f_addr, _buffer, _buf_len ;/////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	edi eax

	mov	edi, [_buffer]

	stdcall libini._.skip_spaces, [_f_addr]

    @@: dec	[_buf_len]

	jz	@f

	stdcall libini._.get_char, [_f_addr]

	cmp	al, 13

	je	@f

	cmp	al, 10

	je	@f

	stosb

	or	al, al

	jnz	@b

    @@: stdcall libini._.unget_char, [_f_addr]

	mov	byte[edi], 0

	dec	edi

    @@: cmp	edi, [_buffer]

	jb	@f

	cmp	byte[edi], 32

	ja	@f

	mov	byte[edi], 0

	dec	edi

	jmp	@b

    @@: pop	eax edi

	ret

endp

;;================================================================================================;;

proc libini._.str_to_int ;////////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> esi = string buffer address                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< eax = binary number representation (no overflow checks made)                                   ;;

;;================================================================================================;;

	push	edx

	xor	eax, eax

	xor	edx, edx

    @@: lodsb

	cmp	al, '0'

	jb	@f

	cmp	al, '9'

	ja	@f

	add	eax, -'0'

	imul	edx, 10

	add	edx, eax

	jmp	@b

    @@: dec	esi

	mov	eax, edx

	pop	edx

	ret

endp

;;================================================================================================;;

proc libini._.int_to_str ;////////////////////////////////////////////////////////////////////////;;

;;------------------------------------------------------------------------------------------------;;

;? --- TBD ---                                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;> eax = number to convert                                                                        ;;

;> ecx = base                                                                                     ;;

;> edi = string buffer address                                                                    ;;

;;------------------------------------------------------------------------------------------------;;

;< --- TBD ---                                                                                    ;;

;;================================================================================================;;

	push	ecx edx

	or	eax, eax

	jns	@f

	mov	byte[edi], '-'

	inc	edi

    @@: call	.recurse

	pop	edx ecx

	ret

  .recurse:

	cmp	eax,ecx

	jb	@f

	xor	edx,edx

	div	ecx

	push	edx

	call	.recurse

	pop	eax

    @@: cmp	al,10

	sbb	al,0x69

	das

	stosb

	retn

endp