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Lex, parse and pretty print HTML as Miso View syntax

License: BSD 3-Clause "New" or "Revised" License

Haskell 51.62% Nix 7.26% HTML 41.11%

miso haskell lexer parser pretty-print parser-combinators

miso-from-html's Introduction

miso-from-html

Convert HTML into miso View syntax.

Features

Strips comments
Pretty prints style tags as a Haskell Map from Data.Map

Usage

Given some HTML

<nav class="navbar" role="navigation">
  <div class="navbar-brand">
    <a class="navbar-item" href="https://bulma.io">
      <img src="https://bulma.io/images/bulma-logo.png" width="112" height="28">
      <a>ok<p>hey</p></a>
    </a>
  </div>
</nav>

Convert it to miso View syntax.

$ cabal run miso-from-html < index.html

Result

nav_
    [ class_ "navbar"
    , role_ "navigation"
    ]
    [ div_ [ class_ "navbar-brand" ]
	[ a_
	    [ class_ "navbar-item"
	    , href_ "https://bulma.io"
	    ]
	    [ img_
		[ src_ "https://bulma.io/images/bulma-logo.png"
		, width_ "112"
		, height_ "28"
		]
	    , a_ []
		[ "ok"
		, p_ [][ "hey" ]
		]
	    ]
	]
    ]

Test

$ nix-shell --run 'runghc Main.hs < index.html'

miso-from-html's People

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miso-from-html's Issues

Checkboxes should be converted to `checked_`

Currently checkbox elements are converted into textProp "checked" "", but it is actually more convenient to use checked_ True as this allows you to change the boolean value of the checkbox.

<input type="checkbox" checked>

[ input_
   [ type_ "checkbox"
   , textProp "checked" ""
   ]
]

disabled_ and checked_

These should port to a boolean and not disabled_ ""

Fix slashes in text nodes

$ miso-from-html <<< '<div><span>10</span>  / month</div>'

Add more robust error handling

When encountered ill-formed HTML. It would be nice is miso-from-html emitted an error like:

"error expected </div> on line 344"

Data attributes converted to Miso despite not being supported

Miso does not support all HTML attributes, but miso-from-html will happily turn any HTML you give it into miso syntax.

For example data attributes are converted into Miso, but it does not appear that Miso actually supports hyphenated element names

    parse error on input ‘data’
    |
    |   , data-toggle_ "dropdown"
    |     ^^^^

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