Reading from text file

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miksayer

Joined: 14 Jul 2005
Posts: 17
Location: Belarus

miksayer

How can I to read from text file?

14 Jul 2005, 21:07

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid

just like from binary file, there is no difference, but you have to code all routines like word-recognising, finding end-of-line etc. yourself. one of biggest disadvantages of ASM - you don't have standard libraries

14 Jul 2005, 21:31

afw2004

Joined: 16 Jun 2005
Posts: 49
Location: Kharkov, Ukraine

afw2004

If you are writing program for Windows, you can use function from msvcrt.dll library. For example:

Code:

READ_ACCEDD db 'r',0

proc read_text_file, .pszFileName
local .tfile:dword, .pStrBuf:dword

    push ebx edi esi

    invoke LocalAlloc, LMEM_FIXED or LMEM_ZEROINIT,1024   ; Allocate space for string to read
    mov [.pStrBuf],eax
    
    cinvoke fopen, [.pszFileName],READ_ACCESS   ; Open text file for reading
    mov [.tfile],eax

.startloop:   ; Get string from text file one by one and store it in [.pStrBuf]
    cinvoke fgets, [.pStrBuf],1024,[.tfile]
    test eax,eax
    jnz .startloop

    cinvoke flose, [.tfile]
    invoke LocalFree, [.pStrBuf]

    pop esi edi ebx
    ret
endp

15 Jul 2005, 10:01

miksayer

Joined: 14 Jul 2005
Posts: 17
Location: Belarus

miksayer

afw2004, thank you!

15 Jul 2005, 10:04

Vasilev Vjacheslav

Joined: 11 Aug 2004
Posts: 392

Vasilev Vjacheslav

i'd recommend you to use pure windows api (CreateFile, ReadFile, CloseHandle)

15 Jul 2005, 19:50

rwalt

Joined: 27 Apr 2004
Posts: 19
Location: Illinois, USA

rwalt

MSVCRT.DLL is a part of the Microsoft Win32 API. It is not one of the core libraries, but it is a member of the API. I believe also that CreateFile and ReadFile may actually make calls to some of the file handling procedures in the C runtime libraries.

_________________
DarkStar

16 Jul 2005, 04:18

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 7725
Location: Kraków, Poland

Tomasz Grysztar

Actually it's the other way round. Also, you will not find the MSVCRT functions in the Microsoft's Win32 API reference.

16 Jul 2005, 10:21

miksayer

Joined: 14 Jul 2005
Posts: 17
Location: Belarus

miksayer

Quote:

Also, you will not find the MSVCRT functions in the Microsoft's Win32 API reference.

why?

16 Jul 2005, 16:02

rwalt

Joined: 27 Apr 2004
Posts: 19
Location: Illinois, USA

rwalt

Yes, your correct, I should have held back on my reply. Embarassed

_________________
DarkStar

19 Jul 2005, 04:41

Reverend

Joined: 24 Aug 2004
Posts: 408
Location: Poland

Reverend

miksayer wrote:

Quote:

Also, you will not find the MSVCRT functions in the Microsoft's Win32 API reference.

why?

Microsoft's Win32 API reference as it's name suggests is only about APIs shared for ALL windows programs. MSVCRT is C/C++ library only. It doesn't mean one cannot use it in asm/delphi/vb/... but it is not their purpose.
But you can find all needed info in C/C++ reference (just as: www.msdn.com)

19 Jul 2005, 23:49

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