RegexReplaceProvider is a custom provider for the IIS URL Rewrite module that allows you to perform string replacements using regexes.
Grab a zip from a Release and unpack it into any folder. Then launch a command prompt as Administrator, cd into the folder and enter:
powershell .\gacutil.ps1 -i RegexReplaceProvider.dll
To add the provider to your site through IIS manager do the following:
- Select your site
- Double-click URL Rewrite
- Click "View Providers..." on the Actions menu at the right side
- Click "Add Provider..." on the Actions menu
- Choose a name for the provider, e.g. "SpaceToHyphen" (you'll have to add a provider for each regex and replacement you want to use)
- Choose RegexReplaceProvider from the dropdown
To configure the provider:
- Click "Add Provider Setting..." on the Actions menu
- Choose "Regex Pattern" and enter the pattern in the "Value" textbox, e.g. "(%20)+" to match all spaces
- Add another provider setting to set the replacement string, e.g. "-" to replace any number of spaces with a single hyphen
The syntax of .NET Framework regular expressions is used. The replacement string can contain substitutions, e.g. "$1" refers to the first group in the match.
You can then use the provider in the redirect URL of a rule action like this:
example/{SpaceToHyphen:{R:1}}
SpaceToHyphen in this example is the name of the provider you have assigned when adding the provider above.