Source code for dircomp.bat

```
@ECHO OFF
```
```
:: Check Windows version
```
```
IF NOT "%OS%"=="Windows_NT" GOTO Syntax
```
```
 
```

:: Only /DEBUG is valid as optional third argument

IF NOT "%~3"=="" IF /I NOT "%~3"=="/C" IF /I NOT "%~3"=="/DEBUG" GOTO Syntax

```
 
```

:: Two command line arguments are mandatory

```
IF "%~1"=="" GOTO Syntax
```
```
IF "%~2"=="" GOTO Syntax
```
```
 
```

:: If the first argument is not a folder, it should end with \*.ext"

```
IF NOT "%~x1"=="" (
```

	ECHO "%~1"| FINDSTR /R /E /I /C:"\\\*\%~x1." >NUL || GOTO Syntax

```
)
```
```
 
```

:: Initial check if (files and) folders exist

```
IF NOT EXIST "%~1" GOTO Syntax
```
```
IF NOT EXIST "%~2" GOTO Syntax
```
```
 
```
```
SETLOCAL ENABLEDELAYEDEXPANSION
```
```
 
```

:: Reset the variables we are going to use

```
SET AllFiles1=
```
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SET AllFiles2=
```
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SET Dir1=
```
```
SET Dir2=
```
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SET FileSpec1=
```
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SET FileSpec2=
```
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SET FileType=*.*
```
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SET NumFiles1=0
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SET NumFiles2=0
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SET TotalFiles1=
```
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SET TotalFiles2=
```
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SET TotalLine1=
```
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SET TotalLine2=
```
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SET TotalSize1=
```
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SET TotalSize2=
```
```
SET Type=
```
```
 
```

:: Check if FCIV is available, and if not, prompt to open its download page

:: Code corrected in version 3.10, as the earlier versions failed to detect

:: the absence of FCIV.EXE (thanks Ron Guggisberg for finding this bug)

ECHO Checking availability of FCIV utility . . .

```
SET Answer=
```
```
FCIV.EXE -h >NUL 2>&1
```
```
IF ERRORLEVEL 1 (
```

	ECHO This batch file requires Microsoft's File Checksum Integrity Verifier utility

	ECHO ^(FCIV.EXE^), available at http://support.microsoft.com/kb/841290

```
	ECHO.
```
```
	SET Answer=N
```

	SET /P Answer=Do you want to open the download page now? [y/N]

```
	IF /I NOT "!Answer!"=="Y" GOTO Syntax
```
```
	CLS
```
```
	ECHO.
```

	ECHO You are about to open Microsoft's FCIV download page.

	ECHO Download and install FCIV.EXE and restart this batch file.

```
	ECHO.
```
```
	PAUSE
```

	START http://support.microsoft.com/kb/841290

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	ENDLOCAL
```
```
	GOTO:EOF
```
```
)
```
```
 
```
```
IF NOT "%~nx1"=="" (
```
```
	SET FileType=*%~x1
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	SET Type=-type *%~x1
```
```
)
```
```
 
```

:: Quick and dirty way to check if directories exist and handle trailing backslashes in one go

```
PUSHD "%~dp1"
```
```
IF ERRORLEVEL 1 (
```
```
	ENDLOCAL
```
```
	GOTO Syntax
```
```
) ELSE (
```
```
	CD | FIND "&" >NUL
```
```
	IF ERRORLEVEL 1 (
```
```
		SET AllFiles1="!__CD__!*.*"
```
```
		SET Dir1="!CD!"
```
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		SET FileSpec1="!__CD__!%FileType%"
```
```
		POPD
```
```
	) ELSE (
```
```
		POPD
```
```
		GOTO Syntax
```
```
	)
```
```
)
```
```
PUSHD "%~f2"
```
```
IF ERRORLEVEL 1 (
```
```
	ENDLOCAL
```
```
	GOTO Syntax
```
```
) ELSE (
```
```
	CD | FIND "&" >NUL
```
```
	IF ERRORLEVEL 1 (
```
```
		SET AllFiles2="!__CD__!*.*"
```
```
		SET Dir2="!CD!"
```
```
		SET FileSpec2="!__CD__!%FileType%"
```
```
		POPD
```
```
	) ELSE (
```
```
		POPD
```
```
		GOTO Syntax
```
```
	)
```
```
)
```
```
 
```

:: :: :: :: :: :: :: :: :: :: :: :: :: :: ::

::                                        ::

:: Part I: just check the total file size ::

::                                        ::

:: :: :: :: :: :: :: :: :: :: :: :: :: :: ::

```
 
```

ECHO Checking number of files and total file size for both directories . . .

```
 
```

:: Get number of matching files and total file size for first directory

FOR /F %%A IN ('DIR "%~1" /S ^| FIND /C "("') DO SET /A TotalLine1 = %%A - 1

FOR /F "tokens=2,4" %%A IN ('DIR "%~1" /-C /S ^| FIND "(" ^| FIND /N "(" ^| FIND "[%TotalLine1%]"') DO (

```
	SET TotalFiles1=%%A
```
```
	SET TotalSize1=%%B
```
```
)
```
```
 
```

:: Get number of matching files and total file size for second directory

FOR /F %%A IN ('DIR "%FileSpec2%" /S ^| FIND /C "("') DO SET /A TotalLine2 = %%A - 1

FOR /F "tokens=2,4" %%A IN ('DIR %FileSpec2% /-C /S ^| FIND "(" ^| FIND /N "(" ^| FIND "[%TotalLine2%]"') DO (

```
	SET TotalFiles2=%%A
```
```
	SET TotalSize2=%%B
```
```
)
```
```
 
```

:: Abort if the NUMBER of matching files does not match

IF NOT %TotalFiles1% EQU %TotalFiles2% (

```
	ECHO Number of files is different:
```
```
	ECHO %TotalFiles1% files in %Dir1%
```
```
	ECHO %TotalFiles2% files in %Dir2%
```
```
	ECHO.
```
```
	ECHO Aborting comparison . . .
```
```
	ECHO.
```
```
	ENDLOCAL
```
```
	EXIT /B 2
```
```
)
```
```
 
```

:: Warn if the TOTAL SIZE of the files does not match

```
IF NOT %TotalSize1% EQU %TotalSize2% (
```
```
	ECHO Total file size is different:
```
```
	ECHO %TotalSize1% bytes in %Dir1%
```
```
	ECHO %TotalSize2% bytes in %Dir2%
```
```
	ECHO.
```
```
	IF /I "%~3"=="/C" (
```
```
		ECHO Continuing comparison . . .
```
```
		ECHO.
```
```
	) ELSE (
```
```
		ECHO Aborting comparison . . .
```
```
		ECHO.
```
```
		ENDLOCAL
```
```
		EXIT /B 2
```
```
	)
```
```
)
```
```
 
```
```
:: :: :: :: :: :: :: :: :: :: :: :: ::
```
```
::                                  ::
```
```
:: Part II: compare file timestamps ::
```
```
::                                  ::
```
```
:: :: :: :: :: :: :: :: :: :: :: :: ::
```
```
 
```

ECHO Comparing files' timestamps for both directories . . .

```
 
```

:: XCOPY /D /Y /L just checks what is newer without actually copying anything

FOR /F %%A IN ('XCOPY %FileSpec1% %AllFiles2% /S /D /H /R /Y /L 2^>NUL') DO SET NumFiles1=%%A

FOR /F %%A IN ('XCOPY %FileSpec2% %AllFiles1% /S /D /H /R /Y /L 2^>NUL') DO SET NumFiles2=%%A

IF %NumFiles1% EQU 0 IF %NumFiles2% EQU 0 (

```
	REM Do nothing if all timestamps match
```
```
) ELSE (
```

	IF %NumFiles2% GTR 0 ECHO %NumFiles2% files in %Dir1% are older

	IF %NumFiles1% GTR 0 ECHO %NumFiles1% files in %Dir2% are older

```
)
```
```
 
```

:: :: :: :: :: :: :: :: :: :: :: :: :: :: ::

::                                        ::

:: Part III: compare checksums per file   ::

::                                        ::

:: :: :: :: :: :: :: :: :: :: :: :: :: :: ::

```
 
```

:: Go to the TEMP directory to create the required temporary files here

```
PUSHD "%Temp%"
```
```
 
```

:: Remove previous versions of the temporary files

FOR %%A IN (~Dir1.md5 ~Dir1.tmp ~Dir2.md5 ~Dir2.tmp fciv.err) DO IF EXIST %%A DEL %%A

```
 
```

ECHO Scanning %Dir1% and subdirectories . . .

FCIV.EXE %Dir1% -md5 -r %Type% | FINDSTR /R /B /I /C:"[0-9a-f][0-9a-f][0-9a-f]* [a-z\\][:\\]" | SORT /+33 > ~Dir1.md5

```
 
```

ECHO Scanning %Dir2% and subdirectories . . .

FCIV.EXE %Dir2% -md5 -r %Type% | FINDSTR /R /B /I /C:"[0-9a-f][0-9a-f][0-9a-f]* [a-z\\][:\\]" | SORT /+33 > ~Dir2.md5

```
 
```

:: Abort if no files were found in either directory (i.e. if either checksums list is 0 bytes)

FOR %%A IN (~Dir1.tmp) DO SET Size1=%%~zA

FOR %%A IN (~Dir2.tmp) DO SET Size2=%%~zA

```
IF %Size1%0 NEQ 0 IF %Size2%0 NEQ 0 (
```

	REM Do nothing if both files are larger than 0 bytes

```
) ELSE (
```

	IF %Size1%0 EQU 0 ECHO No files found in %Dir1%

	IF %Size2%0 EQU 0 ECHO No files found in %Dir2%

```
	ENDLOCAL
```
```
	EXIT /B 3
```
```
)
```
```
 
```
```
TYPE NUL > ~Dir1.tmp
```
```
TYPE NUL > ~Dir2.tmp
```
```
IF /I "%~3"=="/DEBUG" (
```
```
	SET Count=0
```

	ECHO Removing specified path from ~Dir1.md5

```
)
```

FOR /F "tokens=*" %%A IN (~Dir1.md5) DO (

	IF /I "%~3"=="/DEBUG" SET /A Count += 1

```
	SET Line=%%A
```

	IF /I "%~3"=="/DEBUG" ECHO [!Count!]!Line!

	REM The following line of code would be vulnerable to a code insertion attack

	REM (http://www.thesecurityfactory.be/command-injection-windows.html)

	REM but we checked for ampersands earlier

	FOR %%B IN (%Dir1%) DO SET Line=!Line:%%~B\=!

	IF /I "%~3"=="/DEBUG" ECHO [!Count!]!Line!

```
	>> ~Dir1.tmp ECHO.!Line!
```
```
)
```
```
IF /I "%~3"=="/DEBUG" (
```
```
	SET Count=0
```

	ECHO Removing specified path from ~Dir2.md5

```
)
```

FOR /F "tokens=*" %%A IN (~Dir2.md5) DO (

	IF /I "%~3"=="/DEBUG" SET /A Count += 1

```
	SET Line=%%A
```

	IF /I "%~3"=="/DEBUG" ECHO [!Count!]!Line!

	REM The following line of code would be vulnerable to a code insertion attack

	REM (http://www.thesecurityfactory.be/command-injection-windows.html)

	REM but we checked for ampersands earlier

	FOR %%B IN (%Dir2%) DO SET Line=!Line:%%~B\=!

	IF /I "%~3"=="/DEBUG" ECHO [!Count!]!Line!

```
	>> ~Dir2.tmp ECHO.!Line!
```
```
)
```
```
 
```
```
ECHO Comparing checksums . . .
```
```
SET Error=0
```

FC.EXE /C ~Dir1.tmp ~Dir2.tmp | MORE +1 || SET Error=2

```
 
```
```
:: Remove trash
```
```
IF /I NOT "%~3"=="/DEBUG" (
```
```
	DEL ~Dir1.md5
```
```
	DEL ~Dir1.tmp
```
```
	DEL ~Dir2.md5
```
```
	DEL ~Dir2.tmp
```
```
	DEL fciv.err
```
```
)
```
```
 
```
```
POPD
```
```
 
```

:: Exit with error level 2 in case of mismatch

```
ENDLOCAL & EXIT /B %Error%
```
```
 
```
```
 
```
```
:Syntax
```
```
IF /I "%~3"=="/DEBUG" SET Dir1
```
```
IF /I "%~3"=="/DEBUG" SET Dir2
```
```
IF /I "%~3"=="/DEBUG" SET Type
```
```
ECHO.
```

ECHO DirComp.bat,  Version 3.30 for Windows NT

ECHO Compare the contents of 2 directories

```
ECHO.
```

ECHO Usage:  DIRCOMP  "d:\path\*.ext"  "e:\otherfolder"  [/C]

ECHO    or:  DIRCOMP  "d:\path\"       "e:\otherfolder"  [/C]

```
ECHO.
```

ECHO Where:  /C       Continues comparison even if total file size does not match

```
ECHO.
```

ECHO Notes:  Note the trailing backslash if the first argument is a folder.

ECHO         Compares number of files,  file size, timestamp and contents of files.

ECHO         Requires Microsoft's File Checksum Integrity Verifier utility (FCIV),

ECHO         available at http://support.microsoft.com/kb/841290

ECHO         If FCIV is not available, you will be prompted to download it.

ECHO         Uses FC to compare FCIV's checksum listings; so if differences are

ECHO         found, the lines immediately preceeding and following a line that

ECHO         differs are displayed as well.

ECHO         Ampersands are not allowed in the folder paths.

```
ECHO.
```
```
ECHO Written by Rob van der Woude
```
```
ECHO http://www.robvanderwoude.com
```
```
 
```
```
IF "%OS%"=="Windows_NT" EXIT /B 1
```
```
 
```