go-htmlescape/saferune.go

package htmlescape

var escaped00 []byte = []byte("�")
var escaped01 []byte = []byte("")
var escaped02 []byte = []byte("")
var escaped03 []byte = []byte("")
var escaped04 []byte = []byte("")
var escaped05 []byte = []byte("")
var escaped06 []byte = []byte("")
var escaped07 []byte = []byte("")
var escaped08 []byte = []byte("")
var escaped09 []byte = []byte("	")
var escaped0A []byte = []byte("
")
var escaped0B []byte = []byte("")
var escaped0C []byte = []byte("")
var escaped0D []byte = []byte("
")
var escaped0E []byte = []byte("")
var escaped0F []byte = []byte("")

var escaped10 []byte = []byte("")
var escaped11 []byte = []byte("")
var escaped12 []byte = []byte("")
var escaped13 []byte = []byte("")
var escaped14 []byte = []byte("")
var escaped15 []byte = []byte("")
var escaped16 []byte = []byte("")
var escaped17 []byte = []byte("")
var escaped18 []byte = []byte("")
var escaped19 []byte = []byte("")
var escaped1A []byte = []byte("")
var escaped1B []byte = []byte("")
var escaped1C []byte = []byte("")
var escaped1D []byte = []byte("")
var escaped1E []byte = []byte("")
var escaped1F []byte = []byte("")

const minCtrlBlock1 = 0x7F

var escaped7F []byte = []byte("")
var escaped80 []byte = []byte("€")
var escaped81 []byte = []byte("")
var escaped82 []byte = []byte("‚")
var escaped83 []byte = []byte("ƒ")
var escaped84 []byte = []byte("„")
var escaped85 []byte = []byte("…")
var escaped86 []byte = []byte("†")
var escaped87 []byte = []byte("‡")
var escaped88 []byte = []byte("ˆ")
var escaped89 []byte = []byte("‰")
var escaped8A []byte = []byte("Š")
var escaped8B []byte = []byte("‹")
var escaped8C []byte = []byte("Œ")
var escaped8D []byte = []byte("")
var escaped8E []byte = []byte("Ž")
var escaped8F []byte = []byte("")
var escaped90 []byte = []byte("")
var escaped91 []byte = []byte("‘")
var escaped92 []byte = []byte("’")
var escaped93 []byte = []byte("“")
var escaped94 []byte = []byte("”")
var escaped95 []byte = []byte("•")
var escaped96 []byte = []byte("–")
var escaped97 []byte = []byte("—")
var escaped98 []byte = []byte("˜")
var escaped99 []byte = []byte("™")
var escaped9A []byte = []byte("š")
var escaped9B []byte = []byte("›")
var escaped9C []byte = []byte("œ")
var escaped9D []byte = []byte("")
var escaped9E []byte = []byte("ž")
var escaped9F []byte = []byte("Ÿ")

var ctrlBlock0 [][]byte = [][]byte{
	escaped00,
	escaped01,
	escaped02,
	escaped03,
	escaped04,
	escaped05,
	escaped06,
	escaped07,
	escaped08,
	escaped09,
	escaped0A,
	escaped0B,
	escaped0C,
	escaped0D,
	escaped0E,
	escaped0F,

	escaped10,
	escaped11,
	escaped12,
	escaped13,
	escaped14,
	escaped15,
	escaped16,
	escaped17,
	escaped18,
	escaped19,
	escaped1A,
	escaped1B,
	escaped1C,
	escaped1D,
	escaped1E,
	escaped1F,
}

var ctrlBlock1 [][]byte = [][]byte{
	escaped7F,

	escaped80,
	escaped81,
	escaped82,
	escaped83,
	escaped84,
	escaped85,
	escaped86,
	escaped87,
	escaped88,
	escaped89,
	escaped8A,
	escaped8B,
	escaped8C,
	escaped8D,
	escaped8E,
	escaped8F,

	escaped90,
	escaped91,
	escaped92,
	escaped93,
	escaped94,
	escaped95,
	escaped96,
	escaped97,
	escaped98,
	escaped99,
	escaped9A,
	escaped9B,
	escaped9C,
	escaped9D,
	escaped9E,
	escaped9F,
}

var escapedQuotationMark   []byte = []byte(""")  //          """ """
var escapedApostrophe      []byte = []byte("'")  //          "'" "'"
var escapedAmpersand       []byte = []byte("&")  // "&"  "&"
var escapedLessThanSign    []byte = []byte("<")   // "<"  "&#x3C"
var escapedGreaterThanSign []byte = []byte(">")   // ">"  "&#x3E"

// safeRune will only escape the rune 'r' if it is necessary or wise to do so.
// The returned []byte is in UTF-8 — although all the values returned are in the sub-set of Unicode that is also ASCII.
// So it is both valid UTF-8 and ASCII.
func safeRune(r rune) (escapedRune []byte, wasEscaped bool) {
	switch r {
	case '"':
		return escapedQuotationMark, true
	case '\'':
		return escapedApostrophe, true
	case '&':
		return escapedAmpersand, true
	case '<':
		return escapedLessThanSign, true
	case '>':
		return escapedGreaterThanSign, true
	default:
	}

	if int64(0) <= int64(r) && int64(r) < int64(len(ctrlBlock0)) {
		return ctrlBlock0[int(r)], true
	}

	if minCtrlBlock1 <= int64(r) && int64(r) < (minCtrlBlock1 + int64(len(ctrlBlock1))) {
		return ctrlBlock1[int(r) - minCtrlBlock1], true
	}

	return nil, false
}