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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2007-10-16 23:27:04 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:52 -0700
commit04c71976500352d02f60616d2b960267d8c5fe24 (patch)
treeed0d84a533e26a2c9f18d53413d183252e1d925f /drivers/char/consolemap.c
parentabdbf94d7c6f1fcb2931d5cb7562a6159323b704 (diff)
unicode diacritics support
There have been issues with non-latin1 diacritics and unicode. http://bugzilla.kernel.org/show_bug.cgi?id=7746 Git 759448f459234bfcf34b82471f0dba77a9aca498 `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>
Diffstat (limited to 'drivers/char/consolemap.c')
-rw-r--r--drivers/char/consolemap.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/char/consolemap.c b/drivers/char/consolemap.c
index 163f3fce3f8..6b104e45a32 100644
--- a/drivers/char/consolemap.c
+++ b/drivers/char/consolemap.c
@@ -669,19 +669,29 @@ void con_protect_unimap(struct vc_data *vc, int rdonly)
p->readonly = rdonly;
}
+/*
+ * Always use USER_MAP. These functions are used by the keyboard,
+ * which shouldn't be affected by G0/G1 switching, etc.
+ * If the user map still contains default values, i.e. the
+ * direct-to-font mapping, then assume user is using Latin1.
+ */
/* may be called during an interrupt */
u32 conv_8bit_to_uni(unsigned char c)
{
- /*
- * Always use USER_MAP. This function is used by the keyboard,
- * which shouldn't be affected by G0/G1 switching, etc.
- * If the user map still contains default values, i.e. the
- * direct-to-font mapping, then assume user is using Latin1.
- */
unsigned short uni = translations[USER_MAP][c];
return uni == (0xf000 | c) ? c : uni;
}
+int conv_uni_to_8bit(u32 uni)
+{
+ int c;
+ for (c = 0; c < 0x100; c++)
+ if (translations[USER_MAP][c] == uni ||
+ (translations[USER_MAP][c] == (c | 0xf000) && uni == c))
+ return c;
+ return -1;
+}
+
int
conv_uni_to_pc(struct vc_data *conp, long ucs)
{