Commit Graph

4 Commits

Author SHA1 Message Date
Lukas Wunner cf289cefbf lib/ucs2_string: Speed up ucs2_utf8size()
No need to calculate the string length on every loop iteration.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Peter Jones <pjones@redhat.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
2016-09-09 16:08:46 +01:00
Jason Andryuk a68075908a lib/ucs2_string: Correct ucs2 -> utf8 conversion
The comparisons should be >= since 0x800 and 0x80 require an additional bit
to store.

For the 3 byte case, the existing shift would drop off 2 more bits than
intended.

For the 2 byte case, there should be 5 bits bits in byte 1, and 6 bits in
byte 2.

Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Matthew Garrett <mjg59@coreos.com>
Cc: "Lee, Chun-Yi" <jlee@suse.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
2016-02-16 12:49:05 +00:00
Peter Jones 73500267c9 lib/ucs2_string: Add ucs2 -> utf8 helper functions
This adds ucs2_utf8size(), which tells us how big our ucs2 string is in
bytes, and ucs2_as_utf8, which translates from ucs2 to utf8..

Signed-off-by: Peter Jones <pjones@redhat.com>
Tested-by: Lee, Chun-Yi <jlee@suse.com>
Acked-by: Matthew Garrett <mjg59@coreos.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
2016-02-10 13:19:03 +00:00
Matthew Garrett 0635eb8a54 Move utf16 functions to kernel core and rename
We want to be able to use the utf16 functions that are currently present
in the EFI variables code in platform-specific code as well. Move them to
the kernel core, and in the process rename them to accurately describe what
they do - they don't handle UTF16, only UCS2.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2013-04-15 21:23:03 +01:00