git-switcher.bat

@ECHO OFF
setlocal enabledelayedexpansion 

@REM store users in a variable, manually

@REM user 1
set user[0]=<github username>
set email[0]=<your email>
set pass[0]=<github token>
set signkey[0]=<gpg token if exists>
set gpgsign[0]=true

@REM user 2
set user[1]=<github username>
set email[1]=<your email>
set pass[1]=<github token>
set signkey[1]=<gpg token if exists>
set gpgsign[1]=false

@REM get arguments
set su=%1

@REM is the argument a number?
set /a isnum=%su%+0

@REM if it is not a number, then it is a username, find the index
if %isnum%==0 (
    @rem loop though user list
    for /l %%a in (0,1,1) do (
        @rem if the user is found, then exit the loop
        if !user[%%a]!==%su% (
            set su=%%a
            goto login
        )
    )
)

:login
@REM set credential manager to store credentials
git config --global credential.helper store

@REM login as new user
git config --global user.name !user[%su%]!
git config --global user.email !email[%su%]!
git config --global user.signingkey !signkey[%su%]!
git config --global commit.gpgsign !gpgsign[%su%]!
git config --global credential.helper store

@REM login to github
echo Logging in as !user[%su%]!
echo "protocol=https" > %userprofile%\.git-credentials
echo "host=github.com" >> %userprofile%\.git-credentials
echo "username=!user[%su%]!" >> %userprofile%\.git-credentials
echo "password=!pass[%su%]!" >> %userprofile%\.git-credentials
echo Switched to !user[%su%]!

git config --list --global