Windows batch script to extract number from HTML code? - batch-processing

Question

I am looking for some code to extract a number which is expected to be from one to four digits in length from some HTML code. I have pulled the web page using cURL and used FIND to extract the single line of information I need, but I would like the output to be much cleaner.
Here is an example of the HTML line I'm dealing with:
constant_text_here 123 constant_text</h2></td>
Does that html code mess things up for batch scripting? I know nothing about scripting with Windows Batch code. The number can remain as a string, but it is expected to be between one and four digits.

Answer 1

#ECHO OFF
SETLOCAL
FOR /f "tokens=2" %%a IN (q25614455.txt) DO SET var=%%a
ECHO var=%var%
pause
GOTO :EOF
I used a file named q25614455.txt containing your data for my testing. Sadly, you don't reveal what constant_text_here actually is, so honing the procedure is in your bailiwick. The number following tokens= will pick a string from the text supplied in the file; had your text been constant text here for instance, you'd need to change tokens=2 to tokens=4.
It would also likely be possible to include your curl/find into the procedure and extract your target data in one line, but without sufficient details, a vague general question can at best
garner a vague response.

Answer 2

The < and > will give you trouble as they're used to redirect output.
Is using VBscript a possibility?
From the command line:
C:\>set myvar=constant_text_here 123 constant_text</h2></td>
will output:
< was unexpected at this time.
but this will work:
C:\>set myvar="constant_text_here 123 constant_text</h2></td>"
C:\>echo %myvar%
"constant_text_here 123 constant_text</h2></td>"
C:\>echo [%myvar:~20,4%]
[123 ]
Assuming what interests you can always be found at position 20