diff options
| author | Nicolas Pitre <npitre@baylibre.com> | 2025-04-17 14:45:04 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-26 11:22:03 +0200 |
| commit | 07bc3f442f47b4d158468c2e0146475bdf009091 (patch) | |
| tree | c713dbecae359e1d47346e5439a7f3ee8d163fd2 /drivers/tty/vt/vt.c | |
| parent | d066989a3d41bc75c537b86bcdb2911fc5ffdb07 (diff) | |
vt: move unicode processing to a separate file
This will make it easier to maintain. Also make it depend on
CONFIG_CONSOLE_TRANSLATIONS.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250417184849.475581-3-nico@fluxnic.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt/vt.c')
| -rw-r--r-- | drivers/tty/vt/vt.c | 40 |
1 files changed, 1 insertions, 39 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index b5f3c8a818ed..bcb508bc15ab 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -104,7 +104,6 @@ #include <linux/uaccess.h> #include <linux/kdb.h> #include <linux/ctype.h> -#include <linux/bsearch.h> #include <linux/gcd.h> #define MAX_NR_CON_DRIVER 16 @@ -2712,43 +2711,6 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, u8 c) } } -/* is_double_width() is based on the wcwidth() implementation by - * Markus Kuhn -- 2007-05-26 (Unicode 5.0) - * Latest version: https://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c - */ -struct interval { - uint32_t first; - uint32_t last; -}; - -static int ucs_cmp(const void *key, const void *elt) -{ - uint32_t ucs = *(uint32_t *)key; - struct interval e = *(struct interval *) elt; - - if (ucs > e.last) - return 1; - else if (ucs < e.first) - return -1; - return 0; -} - -static int is_double_width(uint32_t ucs) -{ - static const struct interval double_width[] = { - { 0x1100, 0x115F }, { 0x2329, 0x232A }, { 0x2E80, 0x303E }, - { 0x3040, 0xA4CF }, { 0xAC00, 0xD7A3 }, { 0xF900, 0xFAFF }, - { 0xFE10, 0xFE19 }, { 0xFE30, 0xFE6F }, { 0xFF00, 0xFF60 }, - { 0xFFE0, 0xFFE6 }, { 0x20000, 0x2FFFD }, { 0x30000, 0x3FFFD } - }; - if (ucs < double_width[0].first || - ucs > double_width[ARRAY_SIZE(double_width) - 1].last) - return 0; - - return bsearch(&ucs, double_width, ARRAY_SIZE(double_width), - sizeof(struct interval), ucs_cmp) != NULL; -} - struct vc_draw_region { unsigned long from, to; int x; @@ -2953,7 +2915,7 @@ static int vc_con_write_normal(struct vc_data *vc, int tc, int c, bool inverse = false; if (vc->vc_utf && !vc->vc_disp_ctrl) { - if (is_double_width(c)) + if (ucs_is_double_width(c)) width = 2; } |