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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2017-10-09 21:09:05 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2017-10-10 10:01:27 +0200 |
| commit | 984f251feeb932cfe551cbd62c5f7f5e073b6cc3 (patch) | |
| tree | e89009a68b9cfde6ac80bf4042d221807bab5c1f /lib | |
| parent | 16a73b249d138fedeb188710533902ed7aac1ddc (diff) | |
| download | u-boot-984f251feeb932cfe551cbd62c5f7f5e073b6cc3.zip u-boot-984f251feeb932cfe551cbd62c5f7f5e073b6cc3.tar.gz u-boot-984f251feeb932cfe551cbd62c5f7f5e073b6cc3.tar.bz2 | |
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>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions