Replacing sub strings with regex in powershell - regex

Question

I have the following regex code in my powershell to identify URL's that I need to update:
'href[\s]?=[\s]?\"[^"]*(https:\/\/oursite.org\/[^"]*News and Articles[^"]*)+\"'
'href[\s]?=[\s]?\"[^"]*(https:\/\/oursite.org\/[^"]*en\/News-and-Articles[^"]*)+\"'
These are getting me the results I need to update, now I need to know how to replace the values "News and Articles" with "news-and-articles" and "en" with "news-and-articles".
I have some code that has a replacement url like so:
$newUrl = 'href="https://oursite.org/"' #replaced value
So the beginning result would be:
https://www.oursite.org/en/News-and-Articles/2017/11/article-name
to be replaced with
https://www.oursite.org/news-and-articles/2017/11/article-name
Here is the function that is going through all the articles and doing a replacement:
function SearchItemForMatch
{
param(
[Data.Items.Item]$item
)
Write-Host "------------------------------------item: " $item.Name
foreach($field in $item.Fields) {
#Write-Host $field.Name
if($field.Type -eq "Rich Text") {
#Write-Host $field.Name
if($field.Value -match $pattern) {
ReplaceFieldValue -field $field -needle $pattern -replacement $newUrl
}
#if($field.Value -match $registrationPattern) {
# ReplaceFieldValue -field $field -needle $registrationPattern -replacement $newRegistrationUrl
#}
if($field.Value -match $noenpattern){
ReplaceFieldValue -field $field -needle $noenpattern -replacment $newnoenpattern
}
}
}
}
Here is the replacement method:
Function ReplaceFieldValue
{
param (
[Data.Fields.Field]$field,
[string]$needle,
[string]$replacement
)
Write-Host $field.ID
$replaceValue = $field.Value -replace $needle, $replacement
$item = $field.Item
$item.Editing.BeginEdit()
$field.Value = $replaceValue
$item.Editing.EndEdit()
Publish-Item -item $item -PublishMode Smart
$info = [PSCustomObject]#{
"ID"=$item.ID
"PageName"=$item.Name
"TemplateName"=$item.TemplateName
"FieldName"=$field.Name
"Replacement"=$replacement
}
[void]$list.Add($info)
}

Answer 1

Forgive me if I'm missing something, but it seems to me that all you really want to achieve is to get rid if the /en part and finally convert the whole url to lowercase.
Given your example url, this could be as easy as:
$url = 'https://www.oursite.org/en/News-and-Articles/2017/11/article-name'
$replaceValue = ($url -replace '/en/', '/').ToLower()
Result:
https://www.oursite.org/news-and-articles/2017/11/article-name
If it involves more elaborate replacements, then please edit your question and give us more examples and desired output.

Answer 2

Try Regex: (?<=oursite\.org\/)(?:en\/)?News-and-Articles(?=\/)
Replace with news-and-articles
Demo