find a file

[franlou]

Hello
where can I find an example to search a file named'wordpad.exe' on C:\
thanks

[aker]

Here's my example.

[franlou]

Here's my example.

Thank's I try it

[frktons]

Here's my example.

What did you put inside the source code?
example:

Code Select Expand


comment #
Microsoft Windows Vista Ultimate 32-bit english with Service Pack 1
  C:\ydctemp>dir c:\ /a-d/s/b>Result.txt
¹¦ÄÜ
  È«ÅÌÎļþËÑË÷³ÌÐò ¡ª¡ª Ö¸¶¨Ò»¸öÆðʼĿ¼£¬²éÕÒËùÓÐÎļþ£¨°üÀ¨×ÓĿ¼ÏµÄÎļþ£©
ʹÓà nmake »òÏÂÁÐÃüÁî½øÐбàÒëºÍÁ´½Ó
  ml.exe /c /coff FindFile.asm
  rc.exe FindFile.rc
  link.exe /subsystem:windows FindFile.obj FindFile.res
#
.386
.model flat,stdcall
option casemap:none
include windows.inc
;Include Îļþ¶¨Òå
include user32.inc


I can't understand what those characters mean  ::)

[clive]

Well it's hideous, this hopefully is a little clearer

FINDER.ASM

Code Select Expand

; ml -coff -Fl finder.asm -link /SUBSYSTEM:CONSOLE

        .386
        option casemap:none

        include \masm32\include\masm32rt.inc
        include \masm32\include\debug.inc

        includelib \masm32\lib\kernel32.lib
        includelib \masm32\lib\masm32.lib
        includelib \masm32\lib\debug.lib

        Find proto ThisPath:PTR BYTE

        .data

MAXPATH equ 512

Path    db      MAXPATH dup (?)

NewLine db      13,10,0

Extension db    "*.*", 0

Root    db      "C:\", 0

Slash   db      "\",0

Dot     db      ".",0

DotDot  db      "..",0

Match   db      "wordpad.exe",0

        .code

start:

        invoke  crt_strcpy, addr Path,addr Root

        invoke  crt_strlen, addr Path
        lea     eax,[Path + eax]
        invoke  Find, eax

        invoke  ExitProcess,0


; Now some real assembler, not some pansy ass stuff

Find    proc    ThisPath:PTR BYTE

        local FindData : WIN32_FIND_DATA

        push    esi ; ThisPath
        push    edi ; hFile HANDLE

        mov     esi, ThisPath

        invoke  crt_strcpy, esi, addr Extension

        invoke  FindFirstFile, addr Path, addr FindData

        mov     edi,eax ; hFile

        cmp     eax, INVALID_HANDLE_VALUE
        jz      Find_500

Find_100:

        test    [FindData.dwFileAttributes], FILE_ATTRIBUTE_DIRECTORY
        jz      Find_300

; Directory Branch

        cmp     byte ptr FindData.cFileName[0],'.' ; Cheap test
        jnz     Find_200 ; not a .XXXX file

        invoke  crt_strcmp, addr Dot, addr FindData.cFileName
        or      eax,eax
        jz      Find_400 ; skip if .

        invoke  crt_strcmp, addr DotDot, addr FindData.cFileName
        or      eax,eax
        jz      Find_400 ; skip if ..

Find_200:

        invoke  crt_strcpy, esi, addr FindData.cFileName
        invoke  crt_strcat, esi, addr Slash

        invoke  crt_strlen, esi ; ThisPath

        lea     eax,[esi + eax] ; ThisPath + strlen(ThisPath)

        invoke  Find, eax

        jmp     Find_400

; File Branch

Find_300:

        invoke  crt__stricmp, addr FindData.cFileName, addr Match ; Match to specific file
        or      eax,eax
        jnz     Find_400 ; Not matched

        invoke  crt_strcpy, esi, addr FindData.cFileName

        invoke  StdOut, addr Path
        invoke  StdOut, addr NewLine

; Next File/Directory

Find_400:

        invoke FindNextFile, edi, addr FindData

        or      eax,eax
        jnz     Find_100

        invoke  FindClose, edi

; Leave

Find_500:

        pop     edi
        pop     esi
        ret

Find    endp

        END     start

[frktons]

Well it's hideous, this hopefully is a little clearer

FINDER.ASM

Code Select Expand

; ml -coff -Fl finder.asm -link /SUBSYSTEM:CONSOLE

        .386
        option casemap:none

        include \masm32\include\masm32rt.inc
        include \masm32\include\debug.inc

        includelib \masm32\lib\kernel32.lib
        includelib \masm32\lib\masm32.lib
        includelib \masm32\lib\debug.lib

        Find proto ThisPath:PTR BYTE

        .data

MAXPATH equ 512

Path    db      MAXPATH dup (?)

NewLine db      13,10,0

Extension db    "*.*", 0

Root    db      "C:\", 0

Slash   db      "\",0

Dot     db      ".",0

DotDot  db      "..",0

Match   db      "wordpad.exe",0

        .code

start:

        invoke  crt_strcpy, addr Path,addr Root

        invoke  crt_strlen, addr Path
        lea     eax,[Path + eax]
        invoke  Find, eax

        invoke  ExitProcess,0


; Now some real assembler, not some pansy ass stuff

Find    proc    ThisPath:PTR BYTE

        local FindData : WIN32_FIND_DATA

        push    esi ; ThisPath
        push    edi ; hFile HANDLE

        mov     esi, ThisPath

        invoke  crt_strcpy, esi, addr Extension

        invoke  FindFirstFile, addr Path, addr FindData

        mov     edi,eax ; hFile

        cmp     eax, INVALID_HANDLE_VALUE
        jz      Find_500

Find_100:

        test    [FindData.dwFileAttributes], FILE_ATTRIBUTE_DIRECTORY
        jz      Find_300

; Directory Branch

        cmp     byte ptr FindData.cFileName[0],'.' ; Cheap test
        jnz     Find_200 ; not a .XXXX file

        invoke  crt_strcmp, addr Dot, addr FindData.cFileName
        or      eax,eax
        jz      Find_400 ; skip if .

        invoke  crt_strcmp, addr DotDot, addr FindData.cFileName
        or      eax,eax
        jz      Find_400 ; skip if ..

Find_200:

        invoke  crt_strcpy, esi, addr FindData.cFileName
        invoke  crt_strcat, esi, addr Slash

        invoke  crt_strlen, esi ; ThisPath

        lea     eax,[esi + eax] ; ThisPath + strlen(ThisPath)

        invoke  Find, eax

        jmp     Find_400

; File Branch

Find_300:

        invoke  crt__stricmp, addr FindData.cFileName, addr Match ; Match to specific file
        or      eax,eax
        jnz     Find_400 ; Not matched

        invoke  crt_strcpy, esi, addr FindData.cFileName

        invoke  StdOut, addr Path
        invoke  StdOut, addr NewLine

; Next File/Directory

Find_400:

        invoke FindNextFile, edi, addr FindData

        or      eax,eax
        jnz     Find_100

        invoke  FindClose, edi

; Leave

Find_500:

        pop     edi
        pop     esi
        ret

Find    endp

        END     start

this hopefully is a little clearer

That definitely is clearer  :bg

Thanks Clive, you're always very helpful indeed.  :U

It would be nice to have the GUI hideous version  in clear for the sake
of studying it.
I hope aker is going to post the readable version soon or later.  ::)

[franlou]

Well it's hideous, this hopefully is a little clearer

FINDER.ASM

Code Select Expand

; ml -coff -Fl finder.asm -link /SUBSYSTEM:CONSOLE

        .386
        option casemap:none

        include \masm32\include\masm32rt.inc
        include \masm32\include\debug.inc

        includelib \masm32\lib\kernel32.lib
        includelib \masm32\lib\masm32.lib
        includelib \masm32\lib\debug.lib

        Find proto ThisPath:PTR BYTE

        .data

MAXPATH equ 512

Path    db      MAXPATH dup (?)

NewLine db      13,10,0

Extension db    "*.*", 0

Root    db      "C:\", 0

Slash   db      "\",0

Dot     db      ".",0

DotDot  db      "..",0

Match   db      "wordpad.exe",0

        .code

start:

        invoke  crt_strcpy, addr Path,addr Root

        invoke  crt_strlen, addr Path
        lea     eax,[Path + eax]
        invoke  Find, eax

        invoke  ExitProcess,0


; Now some real assembler, not some pansy ass stuff

Find    proc    ThisPath:PTR BYTE

        local FindData : WIN32_FIND_DATA

        push    esi ; ThisPath
        push    edi ; hFile HANDLE

        mov     esi, ThisPath

        invoke  crt_strcpy, esi, addr Extension

        invoke  FindFirstFile, addr Path, addr FindData

        mov     edi,eax ; hFile

        cmp     eax, INVALID_HANDLE_VALUE
        jz      Find_500

Find_100:

        test    [FindData.dwFileAttributes], FILE_ATTRIBUTE_DIRECTORY
        jz      Find_300

; Directory Branch

        cmp     byte ptr FindData.cFileName[0],'.' ; Cheap test
        jnz     Find_200 ; not a .XXXX file

        invoke  crt_strcmp, addr Dot, addr FindData.cFileName
        or      eax,eax
        jz      Find_400 ; skip if .

        invoke  crt_strcmp, addr DotDot, addr FindData.cFileName
        or      eax,eax
        jz      Find_400 ; skip if ..

Find_200:

        invoke  crt_strcpy, esi, addr FindData.cFileName
        invoke  crt_strcat, esi, addr Slash

        invoke  crt_strlen, esi ; ThisPath

        lea     eax,[esi + eax] ; ThisPath + strlen(ThisPath)

        invoke  Find, eax

        jmp     Find_400

; File Branch

Find_300:

        invoke  crt__stricmp, addr FindData.cFileName, addr Match ; Match to specific file
        or      eax,eax
        jnz     Find_400 ; Not matched

        invoke  crt_strcpy, esi, addr FindData.cFileName

        invoke  StdOut, addr Path
        invoke  StdOut, addr NewLine

; Next File/Directory

Find_400:

        invoke FindNextFile, edi, addr FindData

        or      eax,eax
        jnz     Find_100

        invoke  FindClose, edi

; Leave

Find_500:

        pop     edi
        pop     esi
        ret

Find    endp

        END     start

this hopefully is a little clearer

That definitely is clearer  :bg

Thanks Clive, you're always very helpful indeed.  :U

It would be nice to have the GUI hideous version  in clear for the sake
of studying it.
I hope aker is going to post the readable version soon or later.  ::)

splendid :U :clap:

[aker]

 :lol
Those characters are comments.

[franlou]

ok
I'm sorry but there is a long time ago that I don't practice MASM
and I don't know where are this subroutines: :red

"invoke  crt_strcpy, addr Path,addr Root
invoke  crt_strlen, addr Path
crt_strcmp
crt_strcpy, esi, addr FindData.cFileName
crt_strcat, esi, addr Slash
StdOut..."
are there the some that  'lstrcmpi ,lstrcmp, lstrcat, lstrcpy ..' thay I found  in Win32 Programmer's Reference in the chapter '  the functions used with string manipulation' ?  :dazzled:
thank's

[jj2007]

crt_ stands for C RunTime. Google for strcpy instead of crt_strcpy.

[frktons]

:lol
Those characters are comments.

So if I delete them, the rest is the actual MASM program?

Well it is supposed comments help to highlight chunks of code, don't them?  :P

[clive]

strcmp - String Compare (0 if equivalent)
stricmp - String Compare - Case Insensitive
strcpy - String Copy
strcat - String Concatenate
strlen - String Length

They pull from MSVCRT.DLL

Equivalent code in C

Code Select Expand

// cl -Ox finder.c

#include <windows.h>

#include <stdio.h>
#include <stdlib.h>

char Path[MAX_PATH];  //maximum length of full path

void Find(char *EndPath) // End of Path passed down
{
  HANDLE hFind; // Local context, required unique for each descent

  WIN32_FIND_DATA FindData;   // describes a file by FindFirstFile,FindNextFile
                              //  declares a structure named FindData

  strcpy(EndPath, "*.*"); // Build wildcard version for search

  hFind = FindFirstFile(Path, &FindData);

  if (hFind == INVALID_HANDLE_VALUE)
    return;

  do
  {
    if (FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) //Specifies the file attributes of the file found
    {                                                         //identify a directory
                                                              //FILE_ATTRIBUTE_DIRECTORY is a member of
                                                              //FindData.dwFileAttributes

      if ((FindData.cFileName[0] != '.') ||           // Cheap test for most cases
          ((strcmp(FindData.cFileName, ".") != 0) &&  // More expensive test for . and .. directories
           (strcmp(FindData.cFileName, "..") != 0)))
      {
        strcpy(EndPath, FindData.cFileName); // append current directory to the path
        strcat(EndPath, "\\");

        Find(EndPath + strlen(EndPath)); // Recurse, passing new end of path to optimize concatenation
      }
    }
    else
    {
      // Use a case insensitive compare to produce a list of files

      if (stricmp(FindData.cFileName, "wordpad.exe") == 0) // File wordpad.exe
      {
        strcpy(EndPath, FindData.cFileName);   // append current file to path

        puts(Path); // Print the file name, with the whole path
      }
    }
  }
  while(FindNextFile(hFind, &FindData));

  FindClose(hFind);
}

int main(int argc, char **argv)
{
  strcpy(Path, "C:\\");

  Find(Path + strlen(Path));
}

[franlou]

Hi
When I was programming I used the String Manipulation Functions from "Microsoft® Win32® Programmer's Reference " where I found :
lstrcat
lstrcmp
lstrcmpi
lstrcpy
lstrcpyn
lstrlen

What is the difference with the functions which are in  MSVCRT.DLL?
is there an advanvantage?
thank's

[clive]

From the DLL they take very little space in the application. It would get bigger if I statically linked against a LIB file which would link the functions directly into the EXE.

The lstrxxx functions from Win32 might also be usable (they also live in a DLL), I used the crt_strxxx versions in MASM32's include file because it was convenient.

[franlou]

Hi
I try the code of clive
But I am worried
I got ALL paths where there is "wordpad.exe"

but in fact It is only the first occurence which is interesting for me:
"C:\ProgramFiles\WindowsNT\Accessories\wordpad.exe"

It is the path of the application;
The others are not intresting for me , then I wish ended the subroutine

How to end properly the routine in this case?
thank you