tree e89009a68b9cfde6ac80bf4042d221807bab5c1f
parent d35cbd55ef8be91823af40b14ea45629f6e5362f
author Heinrich Schuchardt <xypron.glpk@gmx.de> 1507576145 +0200
committer Alexander Graf <agraf@suse.de> 1507622487 +0200

efi_loader: MAX_UTF8_PER_UTF16 = 3

The constant MAX_UTF8_PER_UTF16 is used to calculate
required memory when converting from UTF-16 to UTF-8.
If this constant is too big we waste memory.

A code point encoded by one UTF-16 symbol is converted to a
maximum of three UTF-8 symbols, e.g.

0xffff could be encoded as 0xef 0xbf 0xbf.
The first byte carries four bits, the second and third byte
carry six bits each.

A code point encoded by two UTF-16 symbols is converted to four
UTF-8 symbols.

So in this case we need a maximum of two UTF-8 symbols per
UTF-16 symbol.

As the overall maximum is three UTF-8 symobls per UTF-16 symbol
we need MAX_UTF8_PER_UTF16 = 3.

Fixes: 78178bb0c9d lib: add some utf16 handling helpers
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>