How to detect CRLF at the end of file?

[miskox]

What would be the easiest way to check if a .txt file has a CRLF at the end? If it is not there CRLF should be added.

For adding CRLF to the end of the file I use:

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@echo off
::Define LF variable containing a linefeed (0x0A)
set LF=^


::Above 2 blank lines are critical - do not remove

::Define CR variable containing a carriage return (0x0D)
for /f %%a in ('copy /Z "%~dpf0" nul') do set "CR=%%a"
echo %cr%%lf%>>file.txt

Thanks.
Saso

[Aacini]

This works:

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@echo off
setlocal EnableDelayedExpansion

rem Get the last line and its start position in the file
for /F "tokens=1* delims=:" %%a in ('findstr /O "^" file.txt') do set "start=%%a" & set "line=%%b"

rem Calculate the length of last line assuming it don't ends in CRLF
for %%a in (file.txt) do set /A "len=%%~Za-start-1"

rem If line have this lenght, it does NOT ends in CRLF
if "!line:~%len%!" neq "" echo Last line does NOT ends in CRLF

To add a CRLF to a file, just do this:

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echo/>> file.txt

Your code adds two CRLF pairs = one empty line at end of file

Antonio

[miskox]

That's why I ask you guys! You are genius Antonio!

Thanks!

Saso

[Sponge Belly]

Hi Saso,

Try this one-liner:

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findStr /v $ file.txt >nul && echo(no CR-LF at EOF || echo(file ends with CR-LF

Only works for CR-LF (Windows) files, and not LF (Unix) files.

HTH!

- SB

[miskox]

Thank you, SB! Workd great.

So I have (thanku you Aacini and SB):

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findStr /v $ file.txt >nul && echo/>> file.txt

Saso