feat: check the formal viewport meta tag syntax
#1400
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- `HTM-047` is now reported for invalid `viewport` values - new `HTM-056` is reported when a `viewport` value has no `width` or `height` - new `HTM-057` is reported when a viewport width or height value is invalid (i.e. not a positive number or a well-known kewyword) Also: - the `isASCIIWhitespace` static utility method is extraced to a public `InfraUtil` class in a new `org.w3c.epubcheck.util.infra` package - the viewport parser is tested as a standalone class in its own feature file. However, for easier lookup, this file is however located in the `epub3/F-viewport-meta-tag` directory, as if it was a functional test. - several additional functional tests are added to the `epub3/08-layout` directory, for viewport metadata checks. Fixes #1214, fixes #1347
This was referenced Dec 2, 2022
mattgarrish
approved these changes
Dec 2, 2022
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HTM-047is now reported for invalidviewportvaluesHTM-056is reported when aviewportvalue has nowidthorheightHTM-057is reported when a viewport width or height value is invalid (i.e. not a positive number or a well-known kewyword)Also:
isASCIIWhitespacestatic utility method is extraced to a publicInfraUtilclass in a neworg.w3c.epubcheck.util.infrapackageepub3/F-viewport-meta-tagdirectory, as if it was a functional test.epub3/08-layoutdirectory, for viewport metadata checks.Fixes #1214, fixes #1347
Note: this does not include the latest post-CR updates to the viewport requirements