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Editorial Team
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Asked: 2026-06-15T23:37:55+00:00

I am a beginner in writing batch scripts and your help on this is

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I am a beginner in writing batch scripts and your help on this is very much apreciated.

Below is the xml and I need to extract all names whose flag is “on” to a txt file. There are several other category tag instances.

<Head>
   <Category
      name="RIVERTD"
      flag="on"
      location="SG002">
    </Category>
   <Category
      name="BRETRED"
      flag="on"
      location="IT213">
    </Category>
   <Category
      name="AMERAND"
      flag="off"
      location="US212">
   </Category>
</Head>

So, the output I’m looking is as below

RIVERTD
BRETRED

I tried using below code 

@echo off
setlocal disableDelayedExpansion
set input="CP.xml"
set output="Names.txt"

if exist %output% del %output%
for /f "delims=" %%A in ('findstr /n /c:"name=" %input%') do (
  set "ln=%%A"
  setlocal enableDelayedExpansion
  call :parseLine
  endlocal
)
type %output%
exit /b

:parseLine
set "ln2=!ln:*name=!"
if "!ln2!"=="!ln!" exit /b
for /f tokens^=2^ delims^=^" %%B in ("!ln2!") do (
  setlocal disableDelayedExpansion
  >>%output% echo(%%B
  endlocal
)
set "ln=!ln2!"
goto :parseLine

This gives me the result

RIVERTD
BRETRED
AMERAND

However this code doesn’t filter the names based on flag. I’m a beginner. Kindly help to add filter based on flag. Many thanks.

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1 Answer

  1. Editorial Team

    This problem may be solved with a very interesting trick!:

    @echo off
setlocal EnableDelayedExpansion
(for /F "tokens=1,2 delims== " %%a in (CP.xml) do (
   if "%%~b" neq "" set %%a=%%~b
   if /I "!flag!" equ "on" echo !name!& set flag=
)) > Names.txt

    EDIT: Some explanations adeded

    The file have several lines, but the OP look for lines that have the form of an assignment, like these:

      name="RIVERTD"
  flag="on"

  name="BRETRED"
  flag="on"

  name="AMERAND"
  flag="off"

    My program does NOT check for any name, but execute any line with a value after the equal sign as an assignment. This way, when my program process previous lines, the result is equivalent to execute the following commands:

      set name="RIVERTD"
  set flag="on"

  set name="BRETRED"
  set flag="on"

  set name="AMERAND"
  set flag="off"

    After that, just check if FLAG variable have the value “on”; if so, then the NAME variable have the target value, because it was assigned in previous line.

    Antonio

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