Created
September 10, 2011 01:52
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CMD Batch file implementation of toupper() and tolower()
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| @echo off & SETLOCAL ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION | |
| SET STR=Test String | |
| SET STR | |
| call :tolower STR | |
| SET STR | |
| call :toupper STR | |
| set STR | |
| goto :EOF | |
| :: toupper & tolower; makes use of the fact that string | |
| :: replacement (via SET) is not case sensitive | |
| :toupper | |
| for %%L IN (A B C D E F G H I J K L M N O P Q R S T U V W X Y Z) DO SET %1=!%1:%%L=%%L! | |
| goto :EOF | |
| :tolower | |
| for %%L IN (a b c d e f g h i j k l m n o p q r s t u v w x y z) DO SET %1=!%1:%%L=%%L! | |
| goto :EOF |
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Hello, I suggest you a fix, if the string is empty at the time of conversion will return this as result "a=a" or the first element of array.
To prevent this, add in the two arrays, "^^" without quotes:
:tolower (a b c d...) and :toupper (A B C D...)
:tolower (^^ a b c d...) and :toupper (^^ A B C D...)
I hope can be useful. Bye