magical
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mergehtml
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magical 2021-09-24 06:49:47 +00:00
commit 88e072c139
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go.mod 100644
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module git.tilde.town/magical/mergehtml
go 1.14
require golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc // indirect

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go.sum 100644
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc h1:zK/HqS5bZxDptfPJNq8v7vJfXtkU7r9TLIoSr1bXaP4=
golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

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internal/merge.go 100644
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package internal
import (
"io"
"golang.org/x/net/html"
)
type Doc struct{}
type Assets struct {
Images []Asset
Styles []Asset
Scripts []Asset
}
// Merges an HTML document over top of a base template.
//
// <head>
// - <title> of the new doc overrides the base <title> unless the base
// contains {{content}}, in which case the new title is substituted
// - <style> elements from the new doc are placed after any base <style>
// - all other elements are appended to the base
//
// <body>
// - the <header> and <footer> and <main> elemnts are merged.
// in the base document, these elements may appear abitrarily nested inside
// wrapper elements; mergehtml will reproduce that structure in the merged document.
// if there are multiples, only the first will be used for merging.
// if they do not appear in the base doc, they will be appended to the body (header: prepended).
// in the source document, these elements will be removed from any
// containing elements before merging. if there are multiples their contents
// will be concatenated.
// html5 allows multiple <main> elements if all but one are hidden. mergehtml does not.
// - <script> elements are placed at the end of the body
// - all other elements are appended to <main> if it exists, or <body> if not.
//
// any classes attached to the <body>, <header>, <footer>, or <main> will be merged.
//
// all scripts and images will be collected and returned in the Assets object
//
func Merge(base, doc io.Reader) (merged string, assets *Assets, _ error)
func merge(base, doc *html.Node) (out *html.Node, assets *Assets) {
assets = new(Assets)
out, err = html.Parse("<!doctype html><html><head></head><body></body></html>")
if err != nil {
panic("mergehtml: internal error: " + err.Error())
}
}