wip: select elements from html document and css selector
parent
4bab98ef0d
commit
e86a396b8b
95
main.lua
95
main.lua
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@ -1,9 +1,10 @@
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#!/bin/env lua
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#!/bin/env lua
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local html = require(".html")
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local html = require(".html")
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local css = require(".css")
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local file = io.open("test.html", "r")
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local file = io.open("small.html", "r")
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if file == nil then
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if file == nil then
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error("File doesn't exist")
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error("File doesn't exist")
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@ -11,4 +12,94 @@ end
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local content = file:read("a")
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local content = file:read("a")
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html.print_document( html.parse( content ) )
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local doc = html.parse( content )
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print("Write a css selector:")
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local whole_selector = css.parse( io.read() )
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local current_selector = whole_selector
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local elements = {}
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-- start with all elements matching the first selector
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doc:foreach(function( el )
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if el:check_simple_selector( current_selector.selector ) then
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table.insert( elements, el )
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end
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end)
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while current_selector.combinator ~= nil do
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local next_selector = current_selector.next
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local new_elements = {}
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if current_selector.combinator == css.COMBINATORS.DESCENDANT then
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for _, element in ipairs( elements ) do
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element:foreach(function( el )
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if el:check_simple_selector( next_selector.selector ) then
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table.insert( new_elements, el )
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end
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end)
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end
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goto continue
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end
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if current_selector.combinator == css.COMBINATORS.DIRECT_DESCENDANT then
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for _, element in ipairs( elements ) do
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for _, child in ipairs( element.children ) do
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if child:check_simple_selector( next_selector.selector ) then
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table.insert( new_elements, child )
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end
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end
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end
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goto continue
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end
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if current_selector.combinator == css.COMBINATORS.NEXT_SIBLING then
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for _, element in ipairs( elements ) do
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local next_sibling = element:get_next_sibling()
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while next_sibling and next_sibling.tag_name == ":text" do
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next_sibling = next_sibling:get_next_sibling()
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end
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if next_sibling and next_sibling:check_simple_selector( next_selector.selector ) then
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table.insert( new_elements, next_sibling )
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end
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end
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goto continue
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end
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if current_selector.combinator == css.COMBINATORS.SUBSEQUENT_SIBLING then
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for _, element in ipairs( elements ) do
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local sibling = element:get_next_sibling()
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while sibling ~= nil do
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if sibling:check_simple_selector( next_selector.selector ) then
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table.insert( new_elements, sibling )
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end
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sibling = sibling:get_next_sibling()
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end
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end
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goto continue
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end
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::continue::
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elements = new_elements
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current_selector = next_selector
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end
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for _, el in ipairs(elements) do
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print( html.tostring( el ) )
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end
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@ -0,0 +1,60 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>HTMLQ Test Document</title>
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</head>
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<body>
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<div id="main" class="container wrapper">
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<header class="header nav-bar">
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<h1>HTMLQ Test Document</h1>
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<nav class="nav" data-nav-type="main">
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<ul>
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<li><a href="#" data-link-type="internal">Home</a></li>
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<li><a href="#" data-link-type="external">About</a></li>
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<li><a href="#" data-link-type="internal">Contact</a></li>
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</ul>
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</nav>
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</header>
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<main class="content main-content">
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<section class="section featured" id="featured-section">
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<h2>Featured Section</h2>
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<p>This is the featured section.</p>
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<div class="card featured-card" data-card-type="featured">
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<h3>Featured Card</h3>
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<p>This is the featured card.</p>
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<ul>
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<li>Item 1</li>
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<li>Item 2</li>
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<li>Item 3</li>
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</ul>
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</div>
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</section>
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<section class="section regular" id="regular-section">
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<h2>Regular Section</h2>
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<p>This is the regular section.</p>
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<div class="card regular-card" data-card-type="regular">
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<h3>Regular Card</h3>
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<p>This is the regular card.</p>
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<ol>
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<li>Item 1</li>
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<li>Item 2</li>
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<li>Item 3</li>
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</ol>
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</div>
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</section>
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</main>
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<footer class="footer nav-bar" data-footer-type="main">
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<p>© 2024 HTMLQ Test Document</p>
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<nav class="nav" data-nav-type="footer">
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<ul>
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<li><a href="#" data-link-type="internal">Home</a></li>
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<li><a href="#" data-link-type="external">About</a></li>
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<li><a href="#" data-link-type="internal">Contact</a></li>
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</ul>
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</nav>
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</footer>
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</div>
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</body>
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</html>
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