cmd - trick tp parse array and get symbols in order/turn/sequence
First of all, there is a very useful refrencial site that you can use to query some information about cmd syntax and some tips. the site is ss64.com;
There is a interesting discussion on how to use the cmd to parse text from a file into array and process the array one by one, also he wants to fetch each of the elements individually.
The discussion is in this page: .bat script for creating Array from txt file.
to parse a record (separated by ., and we want to retrieve the 1,2,3 elemetns), here is the code that you can write.
for /F "tokens=1,2,3* delims=." %%x in ('echo 2012.249.0.0') do echo %%x.%%y.%%z
the output would be
2012.249.0
and if you want to enter an line of text into an array, by loop through the file, you can do this:
setlocal EnableDelayedExpansion
set i=0
for /F "delims=. tokens=1,2,3*" %%a in ('echo 2012.249.0.0') do (
set /A i+=1
set array[!i!]=%%a.%%b.%%c
)
set n=%i%
Once you have the array, you can loop through the array with this methods.
for /l %%a in (1,1,%n%) do echo !array[%%a]!
to make an subroutine, you can do this:
:theSub arrayName arrayLen for /L %%i in (1,1,%2) do echo !%1[%%i]! exit /B :next call :theSub array %n%
the whole demo files is available hrere:
REM http://stackoverflow.com/questions/9448651/bat-script-for-creating-array-from-txt-file
REM
REM array_fields.bat
REM this script demonstrate how to parse a text file line by line to an array and fetch the element each individually
REM
for /F "tokens=1,2,3* delims=." %%x in ('echo 2012.249.0.0') do echo %%x.%%y.%%z
REM output 2012.249.0
setlocal EnableDelayedExpansion
set i=0
for /F "delims=. tokens=1,2,3*" %%a in ('echo 2012.249.0.0') do (
set /A i+=1
set array[!i!]=%%a.%%b.%%c
)
set n=%i%
REM to prin the array elements
for /l %%a in (1,1,%n%) do echo !array[%%a]!
goto :next
:theSub arrayName arrayLen
for /L %%i in (1,1,%2) do echo !%1[%%i]!
exit /B
:next
call :theSub array %n%
endlocal