The EncodeEntities(s) command converts UTF-8 special characters in the input string s to HTML entities.

The conversion always uses the hex code form of an entity even when a named entity exists. For example, the pi character will be converted to "π" rather than "π". The form argument defaults to xml, which specifies

This command only deals with UTF-8 to Unicode conversions, and does not look at escaping one-byte characters like angle brackets. The StringTools:-Escape command handles this conversion if needed.

$\mathrm{with}\left(\mathrm{StringTools}\right)\:$

$r≔\mathrm{DecodeEntities}\left(''エンコード''\right)$

$r≔''エンコード''$

$r≔\mathrm{EncodeEntities}\left(r\right)\:$$\mathrm{lprint}\left(r\right)$

"エンコード"

$\mathrm{pichar}≔\mathrm{DecodeEntities}\left(''\pi ''\right)$

$\mathrm{pichar}≔''\pi ''$

$r≔\mathrm{EncodeEntities}\left(\mathrm{cat}\left(''Is''\,\mathrm{pichar}\,''>\; 3.14''\right)\right)\:$$\mathrm{lprint}\left(r\right)$

"Is π > 3.14"

The StringTools[EncodeEntities] command was introduced in Maple 2018.

For more information on Maple 2018 changes, see Updates in Maple 2018.