Add stricter ArchieML parser

nprapps / liveblog-standalone

NPR's liveblog rig 2.0

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Add stricter ArchieML parser #37

Closed thomaswilburn closed 4 years ago

thomaswilburn commented 4 years ago

We're currently having to anticipate some errors at a pre-parse stage--for example, the existing parser will happily replace properties it finds when a duplicate key, even if we think that should be an error (say when the text is missing an :end tag and it swallows the opening tag for a new post). We should fork the NYT parser to add additional strictness and throw errors when those problems occur.

thomaswilburn commented 4 years ago

Other enhancements to make:

Explicit markup for multiline text fields: field:: to mark their opening, and ::field to close them unambiguously. Inside this kind of block, no other fields are recognized.
Hooks for modifying keys and values on creation (for lower-casing, filtering)
Value parsing via a cast modifier (perhaps field<type>:)