PowerShell -replace to get string between two different characters - regex

Question

I am current using split to get what I need, but I am hoping I can use a better way in powershell.
Here is the string:
server=ss8.server.com;database=CSSDatabase;uid=WS_CSSDatabase;pwd=abc123-1cda23-123-A7A0-CC54;Max Pool Size=5000
I want to get the server and database with out the database= or the server=
here is the method I am currently using and this is what I am currently doing:
$databaseserver = (($details.value).split(';')[0]).split('=')[1]
$database = (($details.value).split(';')[1]).split('=')[1]
This outputs to:
ss8.server.com
CSSDatabase
I would like it to be as simple as possible.
Thank you in advance

Answer 1

Replacing approach
You may use the following regex replace:
$s = 'server=ss8.server.com;database=CSSDatabase;uid=WS_CSSDatabase;pwd=abc123-1cda23-123-A7A0-CC54;Max Pool Size=5000'
$dbserver = $s -replace '^server=([^;]+).*', '$1'
$db = $s -replace '^[^;]*;database=([^;]+).*', '$1'
The technique is to match and capture (with (...)) what we need and just match what we need to remove.
Pattern details:
^ - start of the line
server= - a literal substring
([^;]+) - Group 1 (what $1 refers to) matching 1+ chars other than ;
.* - any 0+ chars other than a newline, as many as possible
Pattern 2 is almost the same, the capturing group is shifted a bit to capture another detail, and some more literal values are added to match the right context.
Note: if the values you need to extract may appear anywhere in the string, replace ^ in the first one and ^[^;]*; pattern in the second one with .*?\b (any 0+ chars other than a newline, as few as possible followed with a word boundary).
Matching approach
With a -match, you may do it the following way:
$s -match '^server=(.+?);database=([^;]+)'
The $Matches[1] will contain the server details and $Matches[2] will hold the DB info:
Name Value
---- -----
2 CSSDatabase
1 ss8.server.com
0 server=ss8.server.com;database=CSSDatabase
Pattern details
^ - start of string
server= - literal substring
(.+?) - Group 1: any 1+ non-linebreak chars as few as possible
;database= - literal substring
([^;]+) - 1+ chars other than ;

Answer 2

Another solution with a RegEx and named capture groups, similar to Wiktor's Matching Approach.
$s = 'server=ss8.server.com;database=CSSDatabase;uid=WS_CSSDatabase;pwd=abc123-1cda23-123-A7A0-CC54;Max Pool Size=5000'
$RegEx = '^server=(?<databaseserver>[^;]+);database=(?<database>[^;]+)'
if ($s -match $RegEx){
$Matches.databaseserver
$Matches.database
}