Method minifyProperty

css/css.go:663–1372

(prop Hash, values []Token)

}

func (c *cssMinifier) minifyProperty(prop Hash, values []Token) []Token {
	// limit maximum to prevent slow recursions (e.g. for background's append)
	if 100 < len(values) {
		return values
	}

	switch prop {
	case Font:
		if len(values) > 1 { // must contain atleast font-size and font-family
			// the font-families are separated by commas and are at the end of font
			// get index for last token before font family names
			i := len(values) - 1
			for j, value := range values[2:] {
				if value.TokenType == css.CommaToken {
					i = 2 + j - 1 // identifier before first comma is a font-family
					break
				}
			}
			i--

			// advance i while still at font-families when they contain spaces but no quotes
			for ; i > 0; i-- { // i cannot be 0, font-family must be prepended by font-size
				if values[i-1].TokenType == css.DelimToken && values[i-1].Data[0] == '/' {
					break
				} else if values[i].TokenType != css.IdentToken && values[i].TokenType != css.StringToken {
					break
				} else if h := values[i].Ident; h == Xx_Small || h == X_Small || h == Small || h == Medium || h == Large || h == X_Large || h == Xx_Large || h == Smaller || h == Larger || h == Inherit || h == Initial || h == Unset {
					// inherit, initial and unset are followed by an IdentToken/StringToken, so must be for font-size
					break
				}
			}

			// font-family minified in place
			values = append(values[:i+1], c.minifyProperty(Font_Family, values[i+1:])...)

			// fix for IE9, IE10, IE11: font name starting with `-` is not recognized
			if values[i+1].Data[0] == '-' {
				v := make([]byte, len(values[i+1].Data)+2)
				v[0] = '\''
				copy(v[1:], values[i+1].Data)
				v[len(v)-1] = '\''
				values[i+1].Data = v
			}

			if i > 0 {
				// line-height
				if i > 1 && values[i-1].TokenType == css.DelimToken && values[i-1].Data[0] == '/' {
					if values[i].Ident == Normal {
						values = append(values[:i-1], values[i+1:]...)
					}
					i -= 2
				}

				// font-size
				i--

				for ; i > -1; i-- {
					if values[i].Ident == Normal {