I would like replace ? in
"EquipmentInfo["?"] = "<iframe src='http://bing.fr'></iframe>";"
by a variable.
I tried this:
(get-content C:\word.txt) -replace '?', '$obj' | Set-Content C:\word.txt
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2 Answers
I would use a positive lookbehind to ensure you find the right question mark. Also you have to use double quote on your replacement since you want to replace a variable:
(get-content C:\word.txt -raw) -replace '(?<=EquipmentInfo\[")\?', "$obj" | Set-Content C:\word.txt
Regex used:
(?<=EquipmentInfo\[")\?
1 Comment
mklement0
++ for a solid solution: also worth mentioning that a simple variable reference needs no quotes at all.
This answer explains the original problem.
jisaak's helpful answer provides a comprehensive solution.
The -replace operator takes a regular expression as the first operand on the RHS, in which ? is a so-called metacharacter with special meaning.
Thus, to use a literal ?, you must escape it, using \:
(get-content C:\word.txt) -replace '\?', $obj
Note: Do not use '...' around $obj, unless you want literal string $obj; generally, to reference variables inside strings you must use "...", but that's not necessary here.
A simple example with a literal:
'Right?' -replace '\?', '!' # -> 'Right!'
4 Comments
Malmier
I try this too but powershell don't agree + (get-content C:\word.txt) -replace '?', '$obj' ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation : (?:String) [], RuntimeException + FullyQualifiedErrorId : InvalidRegularExpression
mklement0
Then the problem must lie elsewhere - see my example. Please add an MCVE (Minimal, Complete, and Verifiable Example) directly to your question.
Martin Brandl
Your solution is valid too, thus upvoted. Just wanted to add a more save regex for the replacement. Don't know why he isn't able to run it...
mklement0
@jisaak I appreciate it, and I appreciate your comprehensive solution.