batch file to make changes in uppercase only in variable

Question

i want batch file to make changes in uppercase only not in the lowercase

the changes is to make before every A (etc from alphabetical) to -A

lets say he wrote "AbkijCljfs" after comparison it will be "-Abkij-Cljfs"

without external file using cmd only

Answer 1

@echo off
    setlocal enableextensions disabledelayedexpansion

    set "string=AbkijCljfs"

    set "buffer="
    for /f "delims=" %%a in ('
        cmd /q /u /c "(echo(%string%)" ^| more 
    ') do (
        set "dash=-"
        for /f "delims=ABCDEFGHIJKLMNOPQRSTUVWXYZ" %%b in ("%%a") do set "dash="
        setlocal enabledelayedexpansion
        for /f "delims=" %%b in ("!buffer!!dash!") do (
            endlocal
            set "buffer=%%b%%a"
        )
    )
    echo([%buffer%]

This uses an unicode cmd instance piped into more to split the string and a for loop to determine if each of the characters is or not uppercase.

Answer 2

Use sed or perl

echo 'AbC' | sed 's/\([A-Z]\)/-\1/g'

Do that for each file

for i in `ls -1`; do
    sed 's/\([A-Z]\)/-\1/g' $i > $i_fixed
done

Or you can use ed to do it in place