bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-04-24 14:07:52 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

vt: preserve unicode values corresponding to screen characters

Browse source 
The vt code translates UTF-8 strings into glyph index values and stores
those glyph values directly in the screen buffer. Because there can only
be at most 512 glyphs, it is impossible to represent most unicode
characters, in which case a default glyph (often '?') is displayed
instead. The original unicode value is then lost.

This patch implements the basic screen buffer handling to preserve unicode
values alongside corresponding display glyphs.  It is not activated by
default, meaning that people not relying on that functionality won't get
the implied overhead.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Dave Mielke <Dave@mielke.cc>
Acked-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nicolas Pitre 2018-06-26 23:56:40 -04:00 • committed by Greg Kroah-Hartman
parent 34b6a3a91f
commit d8ae724271
2 changed files with 211 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/linux/console_struct.h
View file

@ -19,6 +19,7 @@
struct vt_struct;
struct uni_pagedir;
struct uni_screen;
#define NPAR 16
@ -140,6 +141,7 @@ struct vc_data {
struct vc_data **vc_display_fg; /* [!] Ptr to var holding fg console for this display */
struct uni_pagedir *vc_uni_pagedir;
struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
struct uni_screen *vc_uni_screen; /* unicode screen content */
bool vc_panic_force_write; /* when oops/panic this VC can accept forced output/blanking */
/* additional information is in vt_kern.h */
};