ReadAFile.BAT

BrainWaveCC

Jul 17th, 2024 (edited)

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@REM - ReadAFile.BAT (17 Jul 2024 // 17 Jul 2024): Innovative Way to Read a File and Save Each Line as a Variable
@ECHO OFF
::: This script will read an input file with up to 1000 lines (#MAXLINES=999)
::: and save each line as a variable (#LINE000000 to #LINE000999) as necessary.
::: How high you can go will depend on system memory, and possibly some other
::: heap or stack resource. The largest file I tested was one with 823 lines.
:::
::: You would call this from the command-line as:
::: ReadAFile.BAT "x:\Some\Folder\InputFile.TXT
::: -----------------------------------------------
:::
::: Full script can be found here ..... https://pastebin.com/4am7S36Y
:::
::: Tested on Windows 10 x64 and Windows 11
:::
:Variables
SETLOCAL ENABLEDELAYEDEXPANSION
SET #MAXLINES=999
SET #FILENAME="%~1"& IF "%~1"=="" SET #FILENAME="x:\Some\Folder\SomeFile.TXT"
:Check4File -- Check for the existence of the input file
IF NOT EXIST %#FILENAME% (
ECHO FILE NOT FOUND: %#FILENAME%
GOTO :ExitBatch
)
:ReadFile -- Read a file up to maxlines+1 (0 - #MAXLINES)
< %#FILENAME% (
FOR /L %%C IN (0,1,%#MAXLINES%) DO (
SET #COUNT=000000%%~C
SET #COUNT=!#COUNT:~-6!
SET /P #LINE!#COUNT!=
)
)
:FinalReport -- Show all the variables with the lines that were read
SET #LINE
:ExitBatch
TIMEOUT 60
ENDLOCAL

Tags: scripting windows batch shell scripting

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