51 lines
1.8 KiB
Go
51 lines
1.8 KiB
Go
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package internal
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import (
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"io"
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"golang.org/x/net/html"
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)
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type Doc struct{}
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type Assets struct {
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Images []Asset
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Styles []Asset
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Scripts []Asset
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}
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// Merges an HTML document over top of a base template.
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//
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// <head>
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// - <title> of the new doc overrides the base <title> unless the base
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// contains {{content}}, in which case the new title is substituted
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// - <style> elements from the new doc are placed after any base <style>
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// - all other elements are appended to the base
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//
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// <body>
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// - the <header> and <footer> and <main> elemnts are merged.
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// in the base document, these elements may appear abitrarily nested inside
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// wrapper elements; mergehtml will reproduce that structure in the merged document.
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// if there are multiples, only the first will be used for merging.
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// if they do not appear in the base doc, they will be appended to the body (header: prepended).
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// in the source document, these elements will be removed from any
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// containing elements before merging. if there are multiples their contents
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// will be concatenated.
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// html5 allows multiple <main> elements if all but one are hidden. mergehtml does not.
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// - <script> elements are placed at the end of the body
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// - all other elements are appended to <main> if it exists, or <body> if not.
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//
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// any classes attached to the <body>, <header>, <footer>, or <main> will be merged.
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//
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// all scripts and images will be collected and returned in the Assets object
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//
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func Merge(base, doc io.Reader) (merged string, assets *Assets, _ error)
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func merge(base, doc *html.Node) (out *html.Node, assets *Assets) {
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assets = new(Assets)
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out, err = html.Parse("<!doctype html><html><head></head><body></body></html>")
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if err != nil {
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panic("mergehtml: internal error: " + err.Error())
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}
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}
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