Switch statement equivalent in Windows batch file

Question

I wonder if there is a simple way to branch execution in a Windows batch file depending on the value of one single expression  Something akin to switch case blocks in C  C    C   Java  JavaScript  PHP  and other real programming languages   My only workaround is a plain if else block where the same expression is repeatedly checked for equality against different values   IF   ID     0      REM do something   ELSE IF   ID     1      REM do something else   ELSE IF   ID     2      REM do another thing   ELSE     REM default case        So dumb  Is there a better solution

User · Answer

I guess all other options would be more cryptic. For those who like readable and non-cryptic code:

IF        "%ID%"=="0" (
    REM do something

) ELSE IF "%ID%"=="1" (
    REM do something else

) ELSE IF "%ID%"=="2" (
    REM do another thing

) ELSE (
    REM default case...
)

It's like an anecdote:

Magician: Put the egg under the hat, do the magic passes ... Remove the hat and ... get the same egg but in the side view ...

The IF ELSE solution isn't that bad. It's almost as good as python's if elif else. More cryptic 'eggs' can be found here.

User · Answer

It might be a bit late  but this does it   set  case1 operation1  set  case2 operation2  set  case3 operation3   setlocal EnableDelayedExpansion   switch   endlocal    switch  gets replaced before line execution  Serious downsides     You override the case variables It needs DelayedExpansion   Might eventually be usefull in some cases

User · Answer

Compact form for short commands  no  echo     IF   ID     0         amp       amp        ELSE   IF   ID     1          ELSE   IF   ID     2          ELSE   REM default case      After   must be an immediate line end  no spaces

User · Answer

Hariprasad didupe suggested a solution provided by Batchography  but it could be improved a bit  Unlike with other cases getting into default case will set ERRORLEVEL to 1 and  if that is not desired  you should manually set ERRORLEVEL to 0   goto  switch-case-N- N  2 gt nul          rem Default case     rem Manually set ERRORLEVEL to 0      type nul gt nul     echo Something else         The readability could be improved for the price of a call overhead   call Switch SwitchLabel  N        SwitchLabel-1     echo One     goto EOF       SwitchLabel-2     echo Two     goto EOF  SwitchLabel-3     echo Three     goto EOF  SwitchLabel-     echo Default case     Switch goto  1- 2 2 gt nul          type nul gt nul     goto  1-   exit  b   Few things to note    As stated before  this has a call overhead  Default case is required  If no action is needed put rem inside to avoid parenthesis error  All cases except the default one are executed in the sub-context  If you want to exit parent context  usually script  you may use this  Default case is executed in a parent context  so it cannot be combined with other cases  as reaching goto EOF will exit parent context   This could be circumvented by replacing goto  1- in subroutine with call  1- for the price of additional call overhead  Subroutine takes label prefix  sans hyphen  and control variable  Without label prefix switch will look for labels with  - prefix  which are valid  and not passing a control variable will lead to default case

User · Answer

Try by this way  To perform some list of operations like   Switch case has been used  Checking the conditional statements  Invoking the function with more than two arguments        echo off   Start2      cls     goto Start      Start     echo --------------------------------------     echo     Welcome to the Shortcut tool          echo --------------------------------------                 echo Choose from the list given below      echo  1  2017     echo  2  2018     echo  3  Task      set  a one 1     set  a two 2     set  a three 3     set  a four 4     set input      set  p input  Enter your choice      if  input  equ  one  goto Z if NOT goto Start2     if  input  equ  two  goto X if NOT goto Start2     if  input  equ  three  goto C if NOT goto Start2     if  input  geq  four  goto N       Z     cls     echo You have selected year   2017     set year 2017     echo  year      call branches year      pause     exit       X     cls     echo You have selected year   2018     set year 2018     echo  year      call branches year     pause     exit       C       cls     echo You have selected Task     call Task     pause     exit       N     cls     echo Invalid Selection  Try again     pause     goto  start2          branches     cls     echo Choose from the list of Branches given below      echo  1  January     echo  2  Feburary     echo  3  March     SETLOCAL     set  a  Number1   1      set input      set  p input  Enter your choice      set  a b 0     set  a bd 3     set  a bdd 4     if  input  equ  b  goto N     if  input  leq  bd  call Z1 Number1 input if NOT goto Start2     if  input  geq  bdd  goto N         Z1     cls     SETLOCAL     set  a  Number1   1      echo year    Number1      set  a  Number2   2      echo branch    Number2      call operation Number1 Number2     pause     GOTO  EOF        operation     cls     echo Choose from the list of Operation given below      echo  1  UB     echo  3  B     echo  4  C     echo  5  l     echo  6  R     echo  7  JT     echo  8  CT     echo  9  JT     SETLOCAL     set  a  year   1      echo Your have selected year    year      set  a  month   2      echo You have selected Branch    month      set operation      set  p operation  Enter your choice      set  a b 0     set  a bd 9     set  a bdd 10     if  input  equ  b  goto N     if  operation  leq  bd  goto  switch-case-N- operation  if NOT goto Start2     if  input  geq  bdd  goto N          switch-case-N-1     echo Januray     echo  year   month   operation      goto  switch-case-end       switch-case-N-2     echo Feburary     echo  year   month   operation      goto  switch-case-end       switch-case-N-3     echo march     echo  year   month   operation      goto  switch-case-end       switch-case-end        echo Task Completed        pause        exit        goto  start2            Task     cls     echo Choose from the list of Operation given below      echo  1  UB     echo  3  B     echo  4  C     echo  5  l     echo  6  R     echo  7  JT     echo  8  CT     echo  9  JT     SETLOCAL     set operation      set  p operation  Enter your choice      set  a b 0     set  a bd 9     set  a bdd 10     if  input  equ  b  goto N     if  operation  leq  bd  goto  switch-case-N- operation  if NOT goto Start2     if  input  geq  bdd  goto N          switch-case-N-1     echo Januray     echo  operation      goto  switch-case-end       switch-case-N-2     echo Feburary     echo  year   month   operation      goto  switch-case-end       switch-case-N-3     echo march     echo  year   month   operation      goto  switch-case-end       switch-case-end        echo Task Completed        pause        exit        goto  start2

User · Answer

If if is not working you use    switch case  n  1  statements  goto  switch case end etc     http   lallouslab net 2016 12 21 batchography-switch-case

User · Answer

I searched switch   case in batch files today and stumbled upon this  I used this solution and extended it with a goto exit   IF   1    red  echo  one selected   amp  goto exit IF   1    two  echo  two selected   amp  goto exit      echo  Options   one   two          exit    Which brings in the default state  echo line  and no extra if s when the choice is found

User · Answer

I ended up using label names containing the values for the case expressions as suggested by AjV Jsy  Anyway  I use CALL instead of GOTO to jump into the correct case block and GOTO  EOF to jump back  The following sample code is a complete batch script illustrating the idea    ECHO OFF  SET  P COLOR  Choose a background color  type red  blue or black      2 gt NUL CALL  CASE  COLOR    jump to  CASE red   CASE blue  etc  IF ERRORLEVEL 1 CALL  DEFAULT CASE   If label doesn t exist  ECHO Done  EXIT  B   CASE red   COLOR CF   GOTO END CASE  CASE blue   COLOR 9F   GOTO END CASE  CASE black   COLOR 0F   GOTO END CASE  DEFAULT CASE   ECHO Unknown color   COLOR     GOTO END CASE  END CASE   VER  gt  NUL   reset ERRORLEVEL   GOTO  EOF   return from CALL

User · Answer

This is simpler to read   IF   ID     0  REM do something IF   ID     1  REM do something else IF   ID     2  REM do another thing IF  ID  GTR 2  REM default case

[batch-file] Switch statement equivalent in Windows batch file

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