Parsing string in batch file

Question

I have the following string:

MyProject/Architecture=32bit,BuildType=Debug,OS=winpc

I would like to be able to grab the values 32bit, Debug, and

Answer 1

Try the following:

@ECHO OFF

SET Var=MyProject/Architecture=32bit,BuildType=Debug,OS=winpc

FOR /F "tokens=1,2,3 delims=," %%A IN ("%Var%") DO (
    FOR /F "tokens=1,2 delims==" %%D IN ("%%A") DO (
        SET Architecture=%%E
    )
    FOR /F "tokens=1,2 delims==" %%D IN ("%%B") DO (
        SET BuildType=%%E
    )
    FOR /F "tokens=1,2 delims==" %%D IN ("%%C") DO (
        SET OS=%%E
    )
)

ECHO %Architecture%
ECHO %BuildType%
ECHO %OS%

PAUSE

Answer 2

Here is an interesting solution that doesn't care how many or what order the name=value pairs are specified. The trick is to replace each comma with a linefeed character so that FOR /F will iterate each name=value pair. This should work as long as there is only one / in the string.

@echo off
setlocal enableDelayedExpansion
set "str=MyProject/Architecture=32bit,BuildType=Debug,OS=winpc"

::Eliminate the leading project info
set "str=%str:*/=%"

::Define a variable containing a LineFeed character
set LF=^


::The above 2 empty lines are critical - do not remove

::Parse and set the values
for %%A in ("!LF!") do (
  for /f "eol== tokens=1* delims==" %%B in ("!str:,=%%~A!") do set "%%B=%%C"
)

::Display the values
echo Architecture=%Architecture%
echo BuildType=%BuildType%
echo OS=%OS%

With a bit more code it can selectively parse out only name=value pairs that we are interested in. It also initializes the variables to undefined in case the variable is missing from the string.

@echo off
setlocal enableDelayedExpansion
set "str=MyProject/Architecture=32bit,BuildType=Debug,OS=winpc"

::Eliminate the leading project info
set "str=%str:*/=%"

::Define a variable containing a LineFeed character
set LF=^


::The above 2 empty lines are critical - do not remove

::Define the variables we are interested in
set "vars= Architecture BuildType OS "

::Clear any existing values
for %%A in (%vars%) do set "%%A="

::Parse and conditionally set the values
for %%A in ("!LF!") do (
  for /f "eol== tokens=1* delims==" %%B in ("!str:,=%%~A!") do (
    if !vars: %%B ! neq !vars! set "%%B=%%C"
  )
)

::Display the values
for %%A in (%vars%) do echo %%A=!%%A!

Answer 3

This should do it:

FOR /F "tokens=1-6 delims==," %%I IN ("MyProject/Architecture=32bit,BuildType=Debug,OS=winpc") DO (
    ECHO I %%I, J %%J, K %%K, L %%L, M %%M, N %%N
)
REM output is: I MyProject/Architecture, J 32bit, K BuildType, L Debug, M OS, N winpc

The batch FOR loop is a pretty interesting piece of machinery. Type FOR /? in a console for a description of some of the crazy stuff it can do.