Attoparsec parsers for YAML frontmatter as used in Jekyll. Because of how
Data.Yaml is implemented using
Data.Yaml.Frontmatter.frontmatterYaml instance of
Parser works with YAML and
$ stack install frontmatter
import Data.Frontmatter import Data.Yaml (Value) main = ByteString.readFile "something.md" >>= parseYamlFrontmatter >>= \case Done ri fm -> do print (fm :: Value) -- aeson object in the frontmatter (the explicit -- type required because the parser will return -- anything with a FromJSON putStrLn ri -- rest of the document _ -> error "Parse failure"
See the haddocks for more information. Essentially exports an
parser and some helpers. Usage examples also available at the
I'm working on the Haskell workshop tool
workhs. In my mind, using markdown file
names as metadata is a very sensible decision. However, I'd like for tutorial
writers to be able to override metadata. Then, Jekyll's YAML frontmatter format
is a great choice:
- It's familiar
- It's very, very easy to implement
This software is published under the MIT license. For more information refer to the LICENSE file.