From 5d55bc03e829afdad427f7539c1e08e65b88d409 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Sat, 6 Jul 2019 18:59:20 +0200 Subject: drop vendor --- vendor/golang.org/x/net/html/render.go | 271 --------------------------------- 1 file changed, 271 deletions(-) delete mode 100644 vendor/golang.org/x/net/html/render.go (limited to 'vendor/golang.org/x/net/html/render.go') diff --git a/vendor/golang.org/x/net/html/render.go b/vendor/golang.org/x/net/html/render.go deleted file mode 100644 index d34564f..0000000 --- a/vendor/golang.org/x/net/html/render.go +++ /dev/null @@ -1,271 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package html - -import ( - "bufio" - "errors" - "fmt" - "io" - "strings" -) - -type writer interface { - io.Writer - io.ByteWriter - WriteString(string) (int, error) -} - -// Render renders the parse tree n to the given writer. -// -// Rendering is done on a 'best effort' basis: calling Parse on the output of -// Render will always result in something similar to the original tree, but it -// is not necessarily an exact clone unless the original tree was 'well-formed'. -// 'Well-formed' is not easily specified; the HTML5 specification is -// complicated. -// -// Calling Parse on arbitrary input typically results in a 'well-formed' parse -// tree. However, it is possible for Parse to yield a 'badly-formed' parse tree. -// For example, in a 'well-formed' parse tree, no element is a child of -// another element: parsing "" results in two sibling elements. -// Similarly, in a 'well-formed' parse tree, no element is a child of a -// element: parsing "

" results in a

with two sibling -// children; the is reparented to the

's parent. However, calling -// Parse on "
" does not return an error, but the result has an -// element with an child, and is therefore not 'well-formed'. -// -// Programmatically constructed trees are typically also 'well-formed', but it -// is possible to construct a tree that looks innocuous but, when rendered and -// re-parsed, results in a different tree. A simple example is that a solitary -// text node would become a tree containing , and elements. -// Another example is that the programmatic equivalent of "abc" -// becomes "abc". -func Render(w io.Writer, n *Node) error { - if x, ok := w.(writer); ok { - return render(x, n) - } - buf := bufio.NewWriter(w) - if err := render(buf, n); err != nil { - return err - } - return buf.Flush() -} - -// plaintextAbort is returned from render1 when a element -// has been rendered. No more end tags should be rendered after that. -var plaintextAbort = errors.New("html: internal error (plaintext abort)") - -func render(w writer, n *Node) error { - err := render1(w, n) - if err == plaintextAbort { - err = nil - } - return err -} - -func render1(w writer, n *Node) error { - // Render non-element nodes; these are the easy cases. - switch n.Type { - case ErrorNode: - return errors.New("html: cannot render an ErrorNode node") - case TextNode: - return escape(w, n.Data) - case DocumentNode: - for c := n.FirstChild; c != nil; c = c.NextSibling { - if err := render1(w, c); err != nil { - return err - } - } - return nil - case ElementNode: - // No-op. - case CommentNode: - if _, err := w.WriteString("<!--"); err != nil { - return err - } - if _, err := w.WriteString(n.Data); err != nil { - return err - } - if _, err := w.WriteString("-->"); err != nil { - return err - } - return nil - case DoctypeNode: - if _, err := w.WriteString("<!DOCTYPE "); err != nil { - return err - } - if _, err := w.WriteString(n.Data); err != nil { - return err - } - if n.Attr != nil { - var p, s string - for _, a := range n.Attr { - switch a.Key { - case "public": - p = a.Val - case "system": - s = a.Val - } - } - if p != "" { - if _, err := w.WriteString(" PUBLIC "); err != nil { - return err - } - if err := writeQuoted(w, p); err != nil { - return err - } - if s != "" { - if err := w.WriteByte(' '); err != nil { - return err - } - if err := writeQuoted(w, s); err != nil { - return err - } - } - } else if s != "" { - if _, err := w.WriteString(" SYSTEM "); err != nil { - return err - } - if err := writeQuoted(w, s); err != nil { - return err - } - } - } - return w.WriteByte('>') - default: - return errors.New("html: unknown node type") - } - - // Render the <xxx> opening tag. - if err := w.WriteByte('<'); err != nil { - return err - } - if _, err := w.WriteString(n.Data); err != nil { - return err - } - for _, a := range n.Attr { - if err := w.WriteByte(' '); err != nil { - return err - } - if a.Namespace != "" { - if _, err := w.WriteString(a.Namespace); err != nil { - return err - } - if err := w.WriteByte(':'); err != nil { - return err - } - } - if _, err := w.WriteString(a.Key); err != nil { - return err - } - if _, err := w.WriteString(`="`); err != nil { - return err - } - if err := escape(w, a.Val); err != nil { - return err - } - if err := w.WriteByte('"'); err != nil { - return err - } - } - if voidElements[n.Data] { - if n.FirstChild != nil { - return fmt.Errorf("html: void element <%s> has child nodes", n.Data) - } - _, err := w.WriteString("/>") - return err - } - if err := w.WriteByte('>'); err != nil { - return err - } - - // Add initial newline where there is danger of a newline beging ignored. - if c := n.FirstChild; c != nil && c.Type == TextNode && strings.HasPrefix(c.Data, "\n") { - switch n.Data { - case "pre", "listing", "textarea": - if err := w.WriteByte('\n'); err != nil { - return err - } - } - } - - // Render any child nodes. - switch n.Data { - case "iframe", "noembed", "noframes", "noscript", "plaintext", "script", "style", "xmp": - for c := n.FirstChild; c != nil; c = c.NextSibling { - if c.Type == TextNode { - if _, err := w.WriteString(c.Data); err != nil { - return err - } - } else { - if err := render1(w, c); err != nil { - return err - } - } - } - if n.Data == "plaintext" { - // Don't render anything else. <plaintext> must be the - // last element in the file, with no closing tag. - return plaintextAbort - } - default: - for c := n.FirstChild; c != nil; c = c.NextSibling { - if err := render1(w, c); err != nil { - return err - } - } - } - - // Render the </xxx> closing tag. - if _, err := w.WriteString("</"); err != nil { - return err - } - if _, err := w.WriteString(n.Data); err != nil { - return err - } - return w.WriteByte('>') -} - -// writeQuoted writes s to w surrounded by quotes. Normally it will use double -// quotes, but if s contains a double quote, it will use single quotes. -// It is used for writing the identifiers in a doctype declaration. -// In valid HTML, they can't contain both types of quotes. -func writeQuoted(w writer, s string) error { - var q byte = '"' - if strings.Contains(s, `"`) { - q = '\'' - } - if err := w.WriteByte(q); err != nil { - return err - } - if _, err := w.WriteString(s); err != nil { - return err - } - if err := w.WriteByte(q); err != nil { - return err - } - return nil -} - -// Section 12.1.2, "Elements", gives this list of void elements. Void elements -// are those that can't have any contents. -var voidElements = map[string]bool{ - "area": true, - "base": true, - "br": true, - "col": true, - "command": true, - "embed": true, - "hr": true, - "img": true, - "input": true, - "keygen": true, - "link": true, - "meta": true, - "param": true, - "source": true, - "track": true, - "wbr": true, -} -- cgit v1.2.3