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unicode diacritics support

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There have been issues with non-latin1 diacritics and unicode.
http://bugzilla.kernel.org/show_bug.cgi?id=7746

Git 759448f459 `Kernel utf-8 handling'
partly resolved it by adding conversion between diacritics and
unicode. The patch below goes further by just turning diacritics into
unicode, hence providing better future support. The kbd support can be
fetched from
http://bugzilla.kernel.org/attachment.cgi?id=12313

This was tested in all of latin1, latin9, latin2 and unicode with french
and czech dead keys.

Turn the kernel accent_table into unicode, and extend ioctls KDGKBDIACR
and KDSKBDIACR into their equivalents KDGKBDIACRUC and KDSKBDIACR.

New function int conv_uni_to_8bit(u32 uni) for converting unicode into 8bit
_input_.  No, we don't want to store the translation, as it is potentially
sparse and large.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: Jan Engelhardt <jengelh@gmx.de>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Samuel Thibault
2007-10-16 23:27:04 -07:00
committed by Linus Torvalds
parent abdbf94d7c
commit 04c7197650
12 changed files with 158 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/linux/kd.h
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@@ -125,6 +125,16 @@ struct kbdiacrs {
#define KDGKBDIACR 0x4B4A /* read kernel accent table */
#define KDSKBDIACR 0x4B4B /* write kernel accent table */
struct kbdiacruc {
__u32 diacr, base, result;
};
struct kbdiacrsuc {
unsigned int kb_cnt; /* number of entries in following array */
struct kbdiacruc kbdiacruc[256]; /* MAX_DIACR from keyboard.h */
};
#define KDGKBDIACRUC 0x4BFA /* read kernel accent table - UCS */
#define KDSKBDIACRUC 0x4BFB /* write kernel accent table - UCS */
struct kbkeycode {
unsigned int scancode, keycode;
};