Find/replace string in Powershell, counting up

Question

I have a large file with thousands of simple div tags, which I need to index somehow, best by counting up <div n="00001">...<div n="00002">.......<div n="32002">.

So, my question is how to get an array into the basic replace command:

(Get-Content c:\Texts\mytext.txt).replace('<div>', '<div n="$a">') | Set-Content c:\Texts\mytextneu.txt

It would be even better if the resulting id always has 5 digits, as in the example above.

Will you potentially have more than one <div> tag on a single line? — TheMadTechnician
– TheMadTechnician, Commented Sep 2, 2016 at 22:17
There are some, but not necessarily so. I could prepare the document in order to avoid it. — Wernazuma
– Wernazuma, Commented Sep 4, 2016 at 9:07

woxxom · Accepted Answer · 2016-09-03 05:53:09Z

3

Read the entire file into a string and use Regex.Replace method with a scriptblock replacement:

$text = [IO.File]::ReadAllText('sourcefile.html')
$script:counter = 0
([regex]'<div>').Replace($text, {
    $script:counter++;
    "<div n=`"$('{0:d5}' -f $script:counter)`">"
}) | Out-File output.html -Encoding utf8

answered Sep 3, 2016 at 5:53

woxxom

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