The main problem has to do with quotation. ![]() but now I end up with an empty string! ? Quotation matters! To change the behavior into single line mode, you can specify the (?s) to your expression, like this: $article = $article -replace "(?s).*\s*(.*)\s*.*", "$1"Īgain: it compiles. Regular expression options: (?s)įirst, we need to understand the way regular expression matching works in PowerShell: the default mode is that. it does not do anything! I end up with exactly the same string I had. My first attempt was the following code: $article = $article -replace ".*\s*(.*)\s*.*", "$1" $article = "$article" Fail on the first try $article = Invoke-WebRequest $url -UseBasicParsing First, we'll download a blog into a string, like this: $ErrorActionPreference = "Stop" Let's create some dataĪnything is better with an example, so let's use PowerShell to download a blog and extract the article content using a regular expression. ![]() ![]() When creating regular expression or replacement string, use single quoted strings and you'll avoid a world of pain! Also make sure you use the proper regular expression options. ![]() I had this experience when I tried to parse some HTML with PowerShell: I could not get the replacement with regular expression groups to work! It turned out that my. It is a language for writing scripts, so you might encounter some unexpected situations. NET, so it is no surprise that it is very popular with.
0 Comments
Leave a Reply. |