Template:Validextension/doc

This subpage contains documentation, categories, or other content that is not part of the template.
To view the template page itself, see Template:Validextension.

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Postprocessor template to check the output of Module:File.

Usage

{{Validextension |1= |2= }}

As long the module does not distinguish between valid extensions and other cruft, this template can be used to verify the output of the module.

Template parameters

Parameter	Description		Default	Status
1	file name: name of the file without namespace (e.g. PAGENAMEd)		empty	required
2	the name of the file without namespace and without dot_extension, e.g. {{#invoke:StripFilename|main|filename}} {{#invoke:File|woExtension|file=filename}} {{#invoke:FileName|removeExtension|filename}} or the result of such a function		empty	required
3	"Extension" when the valid extension should be returned ("e" is enough)		empty	optional
4	default value for extension to be returned when invalid extension		empty	optional

Additional information

The template is intended to be used in the following namespaces: the File namespace

The template is intended to be used by the following user groups: all users

Localization

This template is not intended to be localized.

The template does not generate any localizable text.

Explanation

Depending on the third parameter, it returns either

• 3=e: the file extension, if it is a valid one, otherwise a null string
• otherwise: the file name without dot_extension

Examples

{{Validextension|HSWikimedia.svg|HSWikimedia||???}}	HSWikimedia
{{Validextension|HSWikimedia.svg|HSWikimedia|e|???}}	svg
{{Validextension|HSWikimedia.icon|HSWikimedia||''unknown ext''}}	unknown ext	0 (does not work}
{{Validextension|HSWikimedia.icon|HSWikimedia|e|''unknown ext''}}	unknown ext