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// 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 (
        "strings"
)

func adjustForeignAttributes(aa []Attribute) {
        for i, a := range aa {
                if a.Key == "" || a.Key[0] != 'x' {
                        continue
                }
                switch a.Key {
                case "xlink:actuate", "xlink:arcrole", "xlink:href", "xlink:role", "xlink:show",
                        "xlink:title", "xlink:type", "xml:base", "xml:lang", "xml:space", "xmlns:xlink":
                        j := strings.Index(a.Key, ":")
                        aa[i].Namespace = a.Key[:j]
                        aa[i].Key = a.Key[j+1:]
                }
        }
}

func htmlIntegrationPoint(n *Node) bool {
        if n.Type != ElementNode {
                return false
        }
        switch n.Namespace {
        case "math":
                // TODO: annotation-xml elements whose start tags have "text/html" or
                // "application/xhtml+xml" encodings.
        case "svg":
                switch n.Data {
                case "desc", "foreignObject", "title":
                        return true
                }
        }
        return false
}

// Section 12.2.5.5.
var breakout = map[string]bool{
        "b":          true,
        "big":        true,
        "blockquote": true,
        "body":       true,
        "br":         true,
        "center":     true,
        "code":       true,
        "dd":         true,
        "div":        true,
        "dl":         true,
        "dt":         true,
        "em":         true,
        "embed":      true,
        "font":       true,
        "h1":         true,
        "h2":         true,
        "h3":         true,
        "h4":         true,
        "h5":         true,
        "h6":         true,
        "head":       true,
        "hr":         true,
        "i":          true,
        "img":        true,
        "li":         true,
        "listing":    true,
        "menu":       true,
        "meta":       true,
        "nobr":       true,
        "ol":         true,
        "p":          true,
        "pre":        true,
        "ruby":       true,
        "s":          true,
        "small":      true,
        "span":       true,
        "strong":     true,
        "strike":     true,
        "sub":        true,
        "sup":        true,
        "table":      true,
        "tt":         true,
        "u":          true,
        "ul":         true,
        "var":        true,
}

// Section 12.2.5.5.
var svgTagNameAdjustments = map[string]string{
        "altglyph":            "altGlyph",
        "altglyphdef":         "altGlyphDef",
        "altglyphitem":        "altGlyphItem",
        "animatecolor":        "animateColor",
        "animatemotion":       "animateMotion",
        "animatetransform":    "animateTransform",
        "clippath":            "clipPath",
        "feblend":             "feBlend",
        "fecolormatrix":       "feColorMatrix",
        "fecomponenttransfer": "feComponentTransfer",
        "fecomposite":         "feComposite",
        "feconvolvematrix":    "feConvolveMatrix",
        "fediffuselighting":   "feDiffuseLighting",
        "fedisplacementmap":   "feDisplacementMap",
        "fedistantlight":      "feDistantLight",
        "feflood":             "feFlood",
        "fefunca":             "feFuncA",
        "fefuncb":             "feFuncB",
        "fefuncg":             "feFuncG",
        "fefuncr":             "feFuncR",
        "fegaussianblur":      "feGaussianBlur",
        "feimage":             "feImage",
        "femerge":             "feMerge",
        "femergenode":         "feMergeNode",
        "femorphology":        "feMorphology",
        "feoffset":            "feOffset",
        "fepointlight":        "fePointLight",
        "fespecularlighting":  "feSpecularLighting",
        "fespotlight":         "feSpotLight",
        "fetile":              "feTile",
        "feturbulence":        "feTurbulence",
        "foreignobject":       "foreignObject",
        "glyphref":            "glyphRef",
        "lineargradient":      "linearGradient",
        "radialgradient":      "radialGradient",
        "textpath":            "textPath",
}

// TODO: add look-up tables for MathML and SVG attribute adjustments.