I'm declaring and defining 5 strings, which I then perform some analysis on via function calls. The first function calculates the length of the strings, and the second count the spaces in the strings. The last two functions are not implemented yet. When I run the batch script, I get several errors saying "Missing operand". I think the problem has to do with localization of variables. Can anyone figure out how to solve the problem? Does the line setlocal EnableExtensions EnableDelayedExpansion ... endlocal also make the variables in the block local besides enable extensions and delayed expansion?
@REM File: String analysis.bat
@REM Author: Jakob Kjeldberg Andersen
@echo off
setlocal EnableExtensions EnableDelayedExpansion
chcp 65001 > nul
color 0A
title String analysis
set /a Count=0
set /a Count+=1 & set String_!Count!="This is a test."
set /a Count+=1 & set String_!Count!="This_is_a_test."
set /a Count+=1 & set String_!Count!=" This is a test."
set /a Count+=1 & set String_!Count!="This is a test. "
set /a Count+=1 & set String_!Count!=" This is a test. "
set /a Start=1
set /a Step=1
set /a Stop=!Count!
set Separatorline=--------------------------------------------------------------------------------
echo !Separatorline! & echo. & echo Strings: & echo.
FOR /L %%X IN (!Start!,!Step!,!Stop!) do (
echo %%X: !String_%%X! & echo.
)
echo !Separatorline! & echo. & echo Stringslengths: & echo.
FOR /L %%X IN (!Start!,!Step!,!Stop!) do (
call :StringLength !String_%%X! , Length
echo %%X: !Length! & echo.
)
echo !Separatorline! & echo. & echo Number of spaces in strings: & echo.
FOR /L %%X IN (!Start!,!Step!,!Stop!) do (
call :SpaceCount !String_%%X! , NumberOfSpaces
echo %%X: !NumberOfSpaces! & echo.
)
endlocal
pause&goto:eof
::==============================================================================
:StringLength StrVar , [RtnVar]
setlocal EnableExtensions EnableDelayedExpansion
set /a Length=0
set String="%~1#"
for %%P in ( 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 ) do (
if "!String:~%%P,1!" NEQ "" (
set /a Length+=%%P
set String=!String:~%%P!
)
)
endlocal & if "%~2" equ "" (echo !Length!) else set /a %~2=!Length!
exit /B 0
::==============================================================================
:SpaceCount StrVar , [RtnVar]
setlocal EnableExtensions EnableDelayedExpansion
set String="%~1"
set /a NumberOfSpaces=0
set /a Start=1
set /a Step=1
set /a Skip=0
set /a Keep=1
call :StringLength !String! , Length
if !Length! equ 0 goto End
set /a Stop=!Length!
FOR /L %%X IN (!Start!,!Step!,!Stop!) DO (
call set Char=!!String:~!Skip!,!Keep!!!
if "!Char!" == " " set /a NumberOfSpaces+=1
set /a Skip+=1
)
:End
endlocal & if "%~2" equ "" (echo !NumberOfSpaces!) else set /a %~2=!NumberOfSpaces!
exit /B 0
::==============================================================================
:WordCount StrVar , [RtnVar]
setlocal EnableExtensions EnableDelayedExpansion
REM Not yet implemented.
endlocal
exit /B 0
::==============================================================================
:WordLength StrVar , WordNumber , [RtnVar_WordLen] , [RtnVar_StartPos] , [RtnVar_EndPos]
setlocal EnableExtensions EnableDelayedExpansion
REM Not yet implemented.
endlocal
exit /B 0
'$a = 'Hello world. How many spaces?''. The length is a built-in property:$a.Length. This counts spaces:([Char[]]$a).Where({ $_ -eq ' ' }).Count. Basic word count:($a -split ' ').count. Sure, there's a learning curve, but it's worth it.