mirror of
https://github.com/golang/go
synced 2024-11-21 21:34:40 -07:00
html: spin doctype.go out of parse.go.
R=andybalholm CC=golang-dev https://golang.org/cl/5445049
This commit is contained in:
Nigel Tao
parent
b2329e997b
commit
929290d5a0
@ -8,6 +8,7 @@ TARG=html
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GOFILES=\
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GOFILES=\
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const.go\
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const.go\
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doc.go\
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doc.go\
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doctype.go\
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entity.go\
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entity.go\
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escape.go\
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escape.go\
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node.go\
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node.go\
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156
src/pkg/html/doctype.go
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156
src/pkg/html/doctype.go
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@ -0,0 +1,156 @@
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package html
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import (
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"strings"
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)
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// parseDoctype parses the data from a DoctypeToken into a name,
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// public identifier, and system identifier. It returns a Node whose Type
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// is DoctypeNode, whose Data is the name, and which has attributes
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// named "system" and "public" for the two identifiers if they were present.
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// quirks is whether the document should be parsed in "quirks mode".
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func parseDoctype(s string) (n *Node, quirks bool) {
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n = &Node{Type: DoctypeNode}
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// Find the name.
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space := strings.IndexAny(s, whitespace)
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if space == -1 {
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space = len(s)
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}
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n.Data = s[:space]
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// The comparison to "html" is case-sensitive.
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if n.Data != "html" {
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quirks = true
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}
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n.Data = strings.ToLower(n.Data)
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s = strings.TrimLeft(s[space:], whitespace)
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if len(s) < 6 {
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// It can't start with "PUBLIC" or "SYSTEM".
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// Ignore the rest of the string.
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return n, quirks || s != ""
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}
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key := strings.ToLower(s[:6])
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s = s[6:]
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for key == "public" || key == "system" {
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s = strings.TrimLeft(s, whitespace)
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if s == "" {
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break
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}
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quote := s[0]
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if quote != '"' && quote != '\'' {
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break
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}
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s = s[1:]
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q := strings.IndexRune(s, rune(quote))
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var id string
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if q == -1 {
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id = s
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s = ""
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} else {
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id = s[:q]
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s = s[q+1:]
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}
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n.Attr = append(n.Attr, Attribute{Key: key, Val: id})
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if key == "public" {
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key = "system"
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} else {
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key = ""
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}
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}
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if key != "" || s != "" {
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quirks = true
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} else if len(n.Attr) > 0 {
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if n.Attr[0].Key == "public" {
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public := strings.ToLower(n.Attr[0].Val)
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switch public {
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case "-//w3o//dtd w3 html strict 3.0//en//", "-/w3d/dtd html 4.0 transitional/en", "html":
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quirks = true
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default:
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for _, q := range quirkyIDs {
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if strings.HasPrefix(public, q) {
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quirks = true
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break
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}
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}
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}
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// The following two public IDs only cause quirks mode if there is no system ID.
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if len(n.Attr) == 1 && (strings.HasPrefix(public, "-//w3c//dtd html 4.01 frameset//") ||
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strings.HasPrefix(public, "-//w3c//dtd html 4.01 transitional//")) {
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quirks = true
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}
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}
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if lastAttr := n.Attr[len(n.Attr)-1]; lastAttr.Key == "system" &&
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strings.ToLower(lastAttr.Val) == "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd" {
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quirks = true
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}
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}
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return n, quirks
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}
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// quirkyIDs is a list of public doctype identifiers that cause a document
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// to be interpreted in quirks mode. The identifiers should be in lower case.
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var quirkyIDs = []string{
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"+//silmaril//dtd html pro v0r11 19970101//",
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"-//advasoft ltd//dtd html 3.0 aswedit + extensions//",
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"-//as//dtd html 3.0 aswedit + extensions//",
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"-//ietf//dtd html 2.0 level 1//",
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"-//ietf//dtd html 2.0 level 2//",
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"-//ietf//dtd html 2.0 strict level 1//",
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"-//ietf//dtd html 2.0 strict level 2//",
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"-//ietf//dtd html 2.0 strict//",
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"-//ietf//dtd html 2.0//",
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"-//ietf//dtd html 2.1e//",
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"-//ietf//dtd html 3.0//",
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"-//ietf//dtd html 3.2 final//",
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"-//ietf//dtd html 3.2//",
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"-//ietf//dtd html 3//",
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"-//ietf//dtd html level 0//",
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"-//ietf//dtd html level 1//",
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"-//ietf//dtd html level 2//",
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"-//ietf//dtd html level 3//",
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"-//ietf//dtd html strict level 0//",
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"-//ietf//dtd html strict level 1//",
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"-//ietf//dtd html strict level 2//",
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"-//ietf//dtd html strict level 3//",
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"-//ietf//dtd html strict//",
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"-//ietf//dtd html//",
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"-//metrius//dtd metrius presentational//",
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"-//microsoft//dtd internet explorer 2.0 html strict//",
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"-//microsoft//dtd internet explorer 2.0 html//",
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"-//microsoft//dtd internet explorer 2.0 tables//",
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"-//microsoft//dtd internet explorer 3.0 html strict//",
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"-//microsoft//dtd internet explorer 3.0 html//",
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"-//microsoft//dtd internet explorer 3.0 tables//",
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"-//netscape comm. corp.//dtd html//",
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"-//netscape comm. corp.//dtd strict html//",
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"-//o'reilly and associates//dtd html 2.0//",
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"-//o'reilly and associates//dtd html extended 1.0//",
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"-//o'reilly and associates//dtd html extended relaxed 1.0//",
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"-//softquad software//dtd hotmetal pro 6.0::19990601::extensions to html 4.0//",
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"-//softquad//dtd hotmetal pro 4.0::19971010::extensions to html 4.0//",
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"-//spyglass//dtd html 2.0 extended//",
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"-//sq//dtd html 2.0 hotmetal + extensions//",
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"-//sun microsystems corp.//dtd hotjava html//",
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"-//sun microsystems corp.//dtd hotjava strict html//",
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"-//w3c//dtd html 3 1995-03-24//",
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"-//w3c//dtd html 3.2 draft//",
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"-//w3c//dtd html 3.2 final//",
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"-//w3c//dtd html 3.2//",
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"-//w3c//dtd html 3.2s draft//",
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"-//w3c//dtd html 4.0 frameset//",
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"-//w3c//dtd html 4.0 transitional//",
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"-//w3c//dtd html experimental 19960712//",
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"-//w3c//dtd html experimental 970421//",
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"-//w3c//dtd w3 html//",
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"-//w3o//dtd w3 html 3.0//",
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"-//webtechs//dtd mozilla html 2.0//",
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"-//webtechs//dtd mozilla html//",
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}
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@ -323,153 +323,6 @@ func (p *parser) resetInsertionMode() {
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const whitespace = " \t\r\n\f"
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const whitespace = " \t\r\n\f"
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// quirkyIDs is a list of public doctype identifiers that cause a document
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// to be interpreted in quirks mode. The identifiers should be in lower case.
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var quirkyIDs = []string{
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"+//silmaril//dtd html pro v0r11 19970101//",
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"-//advasoft ltd//dtd html 3.0 aswedit + extensions//",
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"-//as//dtd html 3.0 aswedit + extensions//",
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"-//ietf//dtd html 2.0 level 1//",
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"-//ietf//dtd html 2.0 level 2//",
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"-//ietf//dtd html 2.0 strict level 1//",
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"-//ietf//dtd html 2.0 strict level 2//",
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"-//ietf//dtd html 2.0 strict//",
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"-//ietf//dtd html 2.0//",
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"-//ietf//dtd html 2.1e//",
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"-//ietf//dtd html 3.0//",
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"-//ietf//dtd html 3.2 final//",
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"-//ietf//dtd html 3.2//",
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"-//ietf//dtd html 3//",
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"-//ietf//dtd html level 0//",
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"-//ietf//dtd html level 1//",
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"-//ietf//dtd html level 2//",
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"-//ietf//dtd html level 3//",
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"-//ietf//dtd html strict level 0//",
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"-//ietf//dtd html strict level 1//",
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"-//ietf//dtd html strict level 2//",
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"-//ietf//dtd html strict level 3//",
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"-//ietf//dtd html strict//",
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"-//ietf//dtd html//",
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"-//metrius//dtd metrius presentational//",
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"-//microsoft//dtd internet explorer 2.0 html strict//",
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"-//microsoft//dtd internet explorer 2.0 html//",
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"-//microsoft//dtd internet explorer 2.0 tables//",
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"-//microsoft//dtd internet explorer 3.0 html strict//",
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"-//microsoft//dtd internet explorer 3.0 html//",
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"-//microsoft//dtd internet explorer 3.0 tables//",
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"-//netscape comm. corp.//dtd html//",
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"-//netscape comm. corp.//dtd strict html//",
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"-//o'reilly and associates//dtd html 2.0//",
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"-//o'reilly and associates//dtd html extended 1.0//",
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"-//o'reilly and associates//dtd html extended relaxed 1.0//",
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"-//softquad software//dtd hotmetal pro 6.0::19990601::extensions to html 4.0//",
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"-//softquad//dtd hotmetal pro 4.0::19971010::extensions to html 4.0//",
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"-//spyglass//dtd html 2.0 extended//",
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"-//sq//dtd html 2.0 hotmetal + extensions//",
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"-//sun microsystems corp.//dtd hotjava html//",
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"-//sun microsystems corp.//dtd hotjava strict html//",
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"-//w3c//dtd html 3 1995-03-24//",
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"-//w3c//dtd html 3.2 draft//",
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"-//w3c//dtd html 3.2 final//",
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"-//w3c//dtd html 3.2//",
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"-//w3c//dtd html 3.2s draft//",
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"-//w3c//dtd html 4.0 frameset//",
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"-//w3c//dtd html 4.0 transitional//",
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"-//w3c//dtd html experimental 19960712//",
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"-//w3c//dtd html experimental 970421//",
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"-//w3c//dtd w3 html//",
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"-//w3o//dtd w3 html 3.0//",
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"-//webtechs//dtd mozilla html 2.0//",
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"-//webtechs//dtd mozilla html//",
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}
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// parseDoctype parses the data from a DoctypeToken into a name,
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// public identifier, and system identifier. It returns a Node whose Type
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// is DoctypeNode, whose Data is the name, and which has attributes
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// named "system" and "public" for the two identifiers if they were present.
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// quirks is whether the document should be parsed in "quirks mode".
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func parseDoctype(s string) (n *Node, quirks bool) {
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n = &Node{Type: DoctypeNode}
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// Find the name.
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space := strings.IndexAny(s, whitespace)
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if space == -1 {
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space = len(s)
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}
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n.Data = s[:space]
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// The comparison to "html" is case-sensitive.
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if n.Data != "html" {
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quirks = true
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}
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n.Data = strings.ToLower(n.Data)
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s = strings.TrimLeft(s[space:], whitespace)
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if len(s) < 6 {
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// It can't start with "PUBLIC" or "SYSTEM".
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// Ignore the rest of the string.
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return n, quirks || s != ""
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}
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key := strings.ToLower(s[:6])
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s = s[6:]
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for key == "public" || key == "system" {
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s = strings.TrimLeft(s, whitespace)
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if s == "" {
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break
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}
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quote := s[0]
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if quote != '"' && quote != '\'' {
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break
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}
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s = s[1:]
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q := strings.IndexRune(s, rune(quote))
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var id string
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if q == -1 {
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id = s
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s = ""
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} else {
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id = s[:q]
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s = s[q+1:]
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}
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n.Attr = append(n.Attr, Attribute{Key: key, Val: id})
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if key == "public" {
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key = "system"
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} else {
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key = ""
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}
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}
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if key != "" || s != "" {
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quirks = true
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} else if len(n.Attr) > 0 {
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if n.Attr[0].Key == "public" {
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public := strings.ToLower(n.Attr[0].Val)
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switch public {
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case "-//w3o//dtd w3 html strict 3.0//en//", "-/w3d/dtd html 4.0 transitional/en", "html":
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quirks = true
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default:
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for _, q := range quirkyIDs {
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if strings.HasPrefix(public, q) {
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quirks = true
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break
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}
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}
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}
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// The following two public IDs only cause quirks mode if there is no system ID.
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if len(n.Attr) == 1 && (strings.HasPrefix(public, "-//w3c//dtd html 4.01 frameset//") ||
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strings.HasPrefix(public, "-//w3c//dtd html 4.01 transitional//")) {
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quirks = true
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}
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}
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if lastAttr := n.Attr[len(n.Attr)-1]; lastAttr.Key == "system" &&
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strings.ToLower(lastAttr.Val) == "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd" {
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quirks = true
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}
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}
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return n, quirks
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}
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// Section 11.2.5.4.1.
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// Section 11.2.5.4.1.
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func initialIM(p *parser) bool {
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func initialIM(p *parser) bool {
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switch p.tok.Type {
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switch p.tok.Type {
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