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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [exp/] [html/] [doctype.go] - Blame information for rev 747

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Line No. Rev Author Line
1 747 jeremybenn 
// 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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