Re: [PATCH 1/1] MdeModulePkg/Console: Improve encoding of box drawing characters


Nate DeSimone
 

Caden,

Please make sure you test this patch thoroughly. With that...

Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>

Thanks!
Nate

-----Original Message-----
From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Caden
Kline
Sent: Thursday, July 29, 2021 7:45 PM
To: devel@edk2.groups.io
Cc: Wang, Jian J <jian.j.wang@intel.com>; Wu, Hao A
<hao.a.wu@intel.com>; Gao, Zhichao <zhichao.gao@intel.com>; Ni, Ray
<ray.ni@intel.com>
Subject: [edk2-devel] [PATCH 1/1] MdeModulePkg/Console: Improve
encoding of box drawing characters

Improved encoding of box drawing characters for different terminal types.
This includes Dec special graphics mode and more utf8.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Caden Kline <cadenkline9@gmail.com>
---
.../Universal/Console/TerminalDxe/Terminal.h | 24 +-
.../Universal/Console/TerminalDxe/Ansi.c | 2 +-
.../Console/TerminalDxe/TerminalConOut.c | 322 ++++++++++++++----
3 files changed, 269 insertions(+), 79 deletions(-)

diff --git a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.h
b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.h
index 360e58e84743..83c3ea94a042 100644
--- a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.h
+++ b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.h
@@ -122,7 +122,10 @@ typedef struct {
EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL SimpleInputEx; LIST_ENTRY
NotifyList; EFI_EVENT KeyNotifyProcessEvent;+ BOOLEAN
DecSpecialGraphicsMode; } TERMINAL_DEV;+// This the lenth the escape
squences for entering and exiting Dec Special Graphics Mode+#define
LENGTH_DEC_ESCAPE 0x03 #define INPUT_STATE_DEFAULT
0x00 #define INPUT_STATE_ESC 0x01@@ -169,6 +172,7 @@
typedef struct {
UINT16 Unicode; CHAR8 PcAnsi; CHAR8 Ascii;+ CHAR8
DecSpecialGraphics; } UNICODE_TO_CHAR; //@@ -1367,20 +1371,22 @@
Utf8ToUnicode (
/** Detects if a Unicode char is for Box Drawing text graphics. - @param
Graphic Unicode char to test.- @param PcAnsi Optional pointer to
return PCANSI equivalent of- Graphic.- @param Ascii Optional
pointer to return ASCII equivalent of- Graphic.-- @retval TRUE
If Graphic is a supported Unicode Box Drawing character.+ @param Graphic
Unicode char to test.+ @param PcAnsi Optional pointer to return
PCANSI equivalent of+ Graphic.+ @param Ascii
Optional pointer to return ASCII equivalent of+ Graphic.+
@param DecSpecialGraphics Optional pointer to return Dec Special Graphics
equivalent of+ Graphic.+ @retval TRUE If Graphic is a
supported Unicode Box Drawing character. **/ BOOLEAN
TerminalIsValidTextGraphics ( IN CHAR16 Graphic,- OUT CHAR8 *PcAnsi,
OPTIONAL- OUT CHAR8 *Ascii OPTIONAL+ OUT CHAR8 *PcAnsi,
OPTIONAL+ OUT CHAR8 *Ascii, OPTIONAL+ OUT CHAR8
*DecSpecialGraphics OPTIONAL ); /**diff --git
a/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c
b/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c
index f117d90b9de3..5ae5a4f0212e 100644
--- a/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c
+++ b/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c
@@ -63,7 +63,7 @@ AnsiTestString (
if ( !(TerminalIsValidAscii (*WString) || TerminalIsValidEfiCntlChar
(*WString) ||- TerminalIsValidTextGraphics (*WString, &GraphicChar,
NULL) )) {+ TerminalIsValidTextGraphics (*WString, &GraphicChar, NULL,
NULL) )) { return EFI_UNSUPPORTED; }diff --git
a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c
b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c
index aae470e9562c..1c22ed426715 100644
--- a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c
+++ b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c
@@ -16,61 +16,59 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
// // UNICODE_TO_CHAR UnicodeToPcAnsiOrAscii[] = {- {
BOXDRAW_HORIZONTAL, 0xc4, L'-' },- { BOXDRAW_VERTICAL,
0xb3, L'|' },- { BOXDRAW_DOWN_RIGHT, 0xda, L'/' },- {
BOXDRAW_DOWN_LEFT, 0xbf, L'\\' },- { BOXDRAW_UP_RIGHT,
0xc0, L'\\' },- { BOXDRAW_UP_LEFT, 0xd9, L'/' },- {
BOXDRAW_VERTICAL_RIGHT, 0xc3, L'|' },- {
BOXDRAW_VERTICAL_LEFT, 0xb4, L'|' },- {
BOXDRAW_DOWN_HORIZONTAL, 0xc2, L'+' },- {
BOXDRAW_UP_HORIZONTAL, 0xc1, L'+' },- {
BOXDRAW_VERTICAL_HORIZONTAL, 0xc5, L'+' },- {
BOXDRAW_DOUBLE_HORIZONTAL, 0xcd, L'-' },- {
BOXDRAW_DOUBLE_VERTICAL, 0xba, L'|' },- {
BOXDRAW_DOWN_RIGHT_DOUBLE, 0xd5, L'/' },- {
BOXDRAW_DOWN_DOUBLE_RIGHT, 0xd6, L'/' },- {
BOXDRAW_DOUBLE_DOWN_RIGHT, 0xc9, L'/' },- {
BOXDRAW_DOWN_LEFT_DOUBLE, 0xb8, L'\\' },- {
BOXDRAW_DOWN_DOUBLE_LEFT, 0xb7, L'\\' },- {
BOXDRAW_DOUBLE_DOWN_LEFT, 0xbb, L'\\' },- {
BOXDRAW_UP_RIGHT_DOUBLE, 0xd4, L'\\' },- {
BOXDRAW_UP_DOUBLE_RIGHT, 0xd3, L'\\' },- {
BOXDRAW_DOUBLE_UP_RIGHT, 0xc8, L'\\' },- {
BOXDRAW_UP_LEFT_DOUBLE, 0xbe, L'/' },- {
BOXDRAW_UP_DOUBLE_LEFT, 0xbd, L'/' },- {
BOXDRAW_DOUBLE_UP_LEFT, 0xbc, L'/' },- {
BOXDRAW_VERTICAL_RIGHT_DOUBLE, 0xc6, L'|' },- {
BOXDRAW_VERTICAL_DOUBLE_RIGHT, 0xc7, L'|' },- {
BOXDRAW_DOUBLE_VERTICAL_RIGHT, 0xcc, L'|' },- {
BOXDRAW_VERTICAL_LEFT_DOUBLE, 0xb5, L'|' },- {
BOXDRAW_VERTICAL_DOUBLE_LEFT, 0xb6, L'|' },- {
BOXDRAW_DOUBLE_VERTICAL_LEFT, 0xb9, L'|' },- {
BOXDRAW_DOWN_HORIZONTAL_DOUBLE, 0xd1, L'+' },- {
BOXDRAW_DOWN_DOUBLE_HORIZONTAL, 0xd2, L'+' },- {
BOXDRAW_DOUBLE_DOWN_HORIZONTAL, 0xcb, L'+' },- {
BOXDRAW_UP_HORIZONTAL_DOUBLE, 0xcf, L'+' },- {
BOXDRAW_UP_DOUBLE_HORIZONTAL, 0xd0, L'+' },- {
BOXDRAW_DOUBLE_UP_HORIZONTAL, 0xca, L'+' },- {
BOXDRAW_VERTICAL_HORIZONTAL_DOUBLE, 0xd8, L'+' },- {
BOXDRAW_VERTICAL_DOUBLE_HORIZONTAL, 0xd7, L'+' },- {
BOXDRAW_DOUBLE_VERTICAL_HORIZONTAL, 0xce, L'+' },+ {
BOXDRAW_HORIZONTAL, 0xc4, L'-', 0x71 },+ { BOXDRAW_VERTICAL,
0xb3, L'|', 0x78 },+ { BOXDRAW_DOWN_RIGHT, 0xda, L'/', 0x6c },+ {
BOXDRAW_DOWN_LEFT, 0xbf, L'\\', 0x6b },+ {
BOXDRAW_UP_RIGHT, 0xc0, L'\\', 0x6d },+ { BOXDRAW_UP_LEFT,
0xd9, L'/', 0x6a },+ { BOXDRAW_VERTICAL_RIGHT, 0xc3, L'|', 0x74 },+ {
BOXDRAW_VERTICAL_LEFT, 0xb4, L'|', 0x75 },+ {
BOXDRAW_DOWN_HORIZONTAL, 0xc2, L'+', 0x77 },+ {
BOXDRAW_UP_HORIZONTAL, 0xc1, L'+', 0x76 },+ {
BOXDRAW_VERTICAL_HORIZONTAL, 0xc5, L'+', 0x6e },+ {
BOXDRAW_DOUBLE_HORIZONTAL, 0xcd, L'-', 0x71 },+ {
BOXDRAW_DOUBLE_VERTICAL, 0xba, L'|', 0x78 },+ {
BOXDRAW_DOWN_RIGHT_DOUBLE, 0xd5, L'/', 0x6c },+ {
BOXDRAW_DOWN_DOUBLE_RIGHT, 0xd6, L'/', 0x6c },+ {
BOXDRAW_DOUBLE_DOWN_RIGHT, 0xc9, L'/', 0x6c },+ {
BOXDRAW_DOWN_LEFT_DOUBLE, 0xb8, L'\\', 0x6b },+ {
BOXDRAW_DOWN_DOUBLE_LEFT, 0xb7, L'\\', 0x6b },+ {
BOXDRAW_DOUBLE_DOWN_LEFT, 0xbb, L'\\', 0x6b },+ {
BOXDRAW_UP_RIGHT_DOUBLE, 0xd4, L'\\', 0x6d },+ {
BOXDRAW_UP_DOUBLE_RIGHT, 0xd3, L'\\', 0x6d },+ {
BOXDRAW_DOUBLE_UP_RIGHT, 0xc8, L'\\', 0x6d },+ {
BOXDRAW_UP_LEFT_DOUBLE, 0xbe, L'/', 0x6a },+ {
BOXDRAW_UP_DOUBLE_LEFT, 0xbd, L'/', 0x6a },+ {
BOXDRAW_DOUBLE_UP_LEFT, 0xbc, L'/', 0x6a },+ {
BOXDRAW_VERTICAL_RIGHT_DOUBLE, 0xc6, L'|', 0x74 },+ {
BOXDRAW_VERTICAL_DOUBLE_RIGHT, 0xc7, L'|', 0x74 },+ {
BOXDRAW_DOUBLE_VERTICAL_RIGHT, 0xcc, L'|', 0x74 },+ {
BOXDRAW_VERTICAL_LEFT_DOUBLE, 0xb5, L'|', 0x75 },+ {
BOXDRAW_VERTICAL_DOUBLE_LEFT, 0xb6, L'|', 0x75 },+ {
BOXDRAW_DOUBLE_VERTICAL_LEFT, 0xb9, L'|', 0x75 },+ {
BOXDRAW_DOWN_HORIZONTAL_DOUBLE, 0xd1, L'+', 0x77 },+ {
BOXDRAW_DOWN_DOUBLE_HORIZONTAL, 0xd2, L'+', 0x77 },+ {
BOXDRAW_DOUBLE_DOWN_HORIZONTAL, 0xcb, L'+', 0x77 },+ {
BOXDRAW_UP_HORIZONTAL_DOUBLE, 0xcf, L'+', 0x76 },+ {
BOXDRAW_UP_DOUBLE_HORIZONTAL, 0xd0, L'+', 0x76 },+ {
BOXDRAW_DOUBLE_UP_HORIZONTAL, 0xca, L'+', 0x76 },+ {
BOXDRAW_VERTICAL_HORIZONTAL_DOUBLE, 0xd8, L'+', 0x6e },+ {
BOXDRAW_VERTICAL_DOUBLE_HORIZONTAL, 0xd7, L'+', 0x6e },+ {
BOXDRAW_DOUBLE_VERTICAL_HORIZONTAL, 0xce, L'+', 0x6e }, - {
BLOCKELEMENT_FULL_BLOCK, 0xdb, L'*' },- {
BLOCKELEMENT_LIGHT_SHADE, 0xb0, L'+' },+ {
BLOCKELEMENT_FULL_BLOCK, 0xdb, L'*', 0x61 },+ {
BLOCKELEMENT_LIGHT_SHADE, 0xb0, L'+', 0x61 }, - {
GEOMETRICSHAPE_UP_TRIANGLE, '^', L'^' },- {
GEOMETRICSHAPE_RIGHT_TRIANGLE, '>', L'>' },- {
GEOMETRICSHAPE_DOWN_TRIANGLE, 'v', L'v' },- {
GEOMETRICSHAPE_LEFT_TRIANGLE, '<', L'<' },+ {
GEOMETRICSHAPE_UP_TRIANGLE, '^', L'^', L'^' },+ {
GEOMETRICSHAPE_RIGHT_TRIANGLE, '>', L'>', L'>' },+ {
GEOMETRICSHAPE_DOWN_TRIANGLE, 'v', L'v', L'v' },+ {
GEOMETRICSHAPE_LEFT_TRIANGLE, '<', L'<', L'<' }, - { ARROW_LEFT,
'<', L'<' },- { ARROW_UP, '^', L'^' },- { ARROW_RIGHT,
'>', L'>' },- { ARROW_DOWN, 'v', L'v' },-- { 0x0000,
0x00, L'\0' }+ { ARROW_LEFT, '<', L'<', L'<' },+ { ARROW_UP,
'^', L'^', L'^' },+ { ARROW_RIGHT, '>', L'>', L'>' },+ {
ARROW_DOWN, 'v', L'v', L'v' }, }; CHAR16 mSetModeString[]
= { ESC, '[', '=', '3', 'h', 0 };@@ -80,6 +78,8 @@ CHAR16
mSetCursorPositionString[] = { ESC, '[', '0', '0', ';', '0', '0', 'H', 0
CHAR16 mCursorForwardString[] = { ESC, '[', '0', '0', 'C', 0 }; CHAR16
mCursorBackwardString[] = { ESC, '[', '0', '0', 'D', 0 }; +CHAR8
SetDecModeString[] = {ESC, 0x28, 0x30};+CHAR8 ExitDecModeString[]
= {ESC, 0x28, 0x42}; // // Body of the ConOut functions //@@ -183,16 +183,19
@@ TerminalConOutOutputString (
EFI_STATUS Status; UINT8 ValidBytes; CHAR8
CrLfStr[2];+ CHAR8 DecChar;+ UINTN
ModeSwitchLength; // // flag used to indicate whether condition happens
which will cause // return EFI_WARN_UNKNOWN_GLYPH // BOOLEAN
Warning; - ValidBytes = 0;- Warning = FALSE;- AsciiChar = 0;-+ ValidBytes
= 0;+ Warning = FALSE;+ AsciiChar = 0;+ DecChar = 0;+
ModeSwitchLength = LENGTH_DEC_ESCAPE; // // get Terminal device data
structure pointer. //@@ -217,17 +220,136 @@ TerminalConOutOutputString
(
for (; *WString != CHAR_NULL; WString++) { switch (TerminalDevice-
TerminalType) {- case TerminalTypePcAnsi:- case TerminalTypeVt100:-
case TerminalTypeVt100Plus:- case TerminalTypeTtyTerm:- case
TerminalTypeLinux:+ if (!TerminalIsValidTextGraphics (*WString,
&GraphicChar, &AsciiChar, NULL)) {+ //+ // If it's not a graphic
character convert Unicode to ASCII.+ //+ GraphicChar =
(CHAR8)*WString;++ if (!(TerminalIsValidAscii (GraphicChar) ||
TerminalIsValidEfiCntlChar (GraphicChar))) {+ //+ // when this driver
use the OutputString to output control string,+ // TerminalDevice-
OutputEscChar is set to let the Esc char+ // to be output to the terminal
emulation software.+ //+ if ((GraphicChar == 27) &&
TerminalDevice->OutputEscChar) {+ GraphicChar = 27;+ } else {+
GraphicChar = '?';+ Warning = TRUE;+ }+ }++ AsciiChar =
GraphicChar;+ }+ Length = 1;+ Status = TerminalDevice->SerialIo-
Write (+ TerminalDevice->SerialIo,+
&Length,+ &GraphicChar+ );++ if
(EFI_ERROR (Status)) {+ goto OutputError;+ }++ break; case
TerminalTypeXtermR6:- case TerminalTypeVt400: case
TerminalTypeSCO:+ if (TerminalIsValidTextGraphics (*WString, NULL,
NULL, &DecChar) && !TerminalIsValidAscii (*WString)) {+ //Box graphics
are split into 2 types simple and advanced+ //simple are drawn with dec
special graphics+ //advanced are drawn with utf8+ //This checks for
simple because they have a lower value than the advanced+ if(*WString
< BOXDRAW_DOUBLE_HORIZONTAL) {+ if (!TerminalDevice-
DecSpecialGraphicsMode) {+ ValidBytes = 0;+
ModeSwitchLength = LENGTH_DEC_ESCAPE;+ Status =
TerminalDevice->SerialIo->Write (+ TerminalDevice-
SerialIo,+ &ModeSwitchLength,+
(UINT8 *)SetDecModeString+ );+ TerminalDevice-
DecSpecialGraphicsMode = TRUE;+ } - if (!TerminalIsValidTextGraphics
(*WString, &GraphicChar, &AsciiChar)) {+ GraphicChar = DecChar;+
Length = 1;+ } else {+ if (TerminalDevice-
DecSpecialGraphicsMode) {+ ModeSwitchLength =
LENGTH_DEC_ESCAPE;+ Status = TerminalDevice->SerialIo->Write (+
TerminalDevice->SerialIo,+ &ModeSwitchLength,+
(UINT8 *)ExitDecModeString+ );+ if
(EFI_ERROR (Status)) {+ goto OutputError;+ }++
TerminalDevice->DecSpecialGraphicsMode = FALSE;+ }++
UnicodeToUtf8 (*WString, &Utf8Char, &ValidBytes);+ Length =
ValidBytes;+ }+ } else {+ if (TerminalDevice-
DecSpecialGraphicsMode) {+ Status = TerminalDevice->SerialIo->Write
(+ TerminalDevice->SerialIo,+
&ModeSwitchLength,+ (UINT8 *)ExitDecModeString+
);+ if (EFI_ERROR (Status)) {+ goto OutputError;+ }++
TerminalDevice->DecSpecialGraphicsMode = FALSE;+ }++
GraphicChar = (CHAR8)*WString;++ if (!(TerminalIsValidAscii
(GraphicChar) || TerminalIsValidEfiCntlChar (GraphicChar))) {+ //+
// when this driver use the OutputString to output control string,+ //
TerminalDevice->OutputEscChar is set to let the Esc char+ // to be
output to the terminal emulation software.+ //+ if ((GraphicChar
== 27) && TerminalDevice->OutputEscChar) {+ GraphicChar = 27;+
Length = 1;+ } else {+ UnicodeToUtf8 (*WString, &Utf8Char,
&ValidBytes);+ Length = ValidBytes;+ }+ } else {+ Length =
1;+ }+ }++ if (ValidBytes) {+ Status = TerminalDevice->SerialIo-
Write (+ TerminalDevice->SerialIo,+
&Length,+ (UINT8 *)&Utf8Char+
);+ ValidBytes = 0;+ } else {+ Status = TerminalDevice->SerialIo-
Write (+ TerminalDevice->SerialIo,+
&Length,+ &GraphicChar+ );+ }+ if
(EFI_ERROR (Status)) {+ goto OutputError;+ }++ break;+ case
TerminalTypeVt100:+ case TerminalTypeTtyTerm:+ if
(!TerminalIsValidTextGraphics (*WString, &GraphicChar, &AsciiChar, NULL)) {
// // If it's not a graphic character convert Unicode to ASCII. //@@ -
248,12 +370,9 @@ TerminalConOutOutputString (
} AsciiChar = GraphicChar;- } - if (TerminalDevice-
TerminalType != TerminalTypePcAnsi) {- GraphicChar = AsciiChar;- }+
GraphicChar = AsciiChar; Length = 1; @@ -267,8 +386,67 @@
TerminalConOutOutputString (
goto OutputError; } - break;+ break;+ case
TerminalTypeVt100Plus:+ case TerminalTypeVt400:+ Length = 1;+ if
(TerminalIsValidTextGraphics (*WString, NULL, NULL, &DecChar)) {+ if
(!TerminalDevice->DecSpecialGraphicsMode) {+ ModeSwitchLength =
LENGTH_DEC_ESCAPE;+ Status = TerminalDevice->SerialIo->Write (+
TerminalDevice->SerialIo,+ &ModeSwitchLength,+
(UINT8 *)SetDecModeString+ );+ TerminalDevice-
DecSpecialGraphicsMode = TRUE;+ } + GraphicChar = DecChar;+ }
else {+ if (TerminalDevice->DecSpecialGraphicsMode) {+
ModeSwitchLength = LENGTH_DEC_ESCAPE;+ Status = TerminalDevice-
SerialIo->Write (+ TerminalDevice->SerialIo,+
&ModeSwitchLength,+ (UINT8
*)ExitDecModeString+ );++ if (EFI_ERROR (Status))
{+ goto OutputError;+ }++ TerminalDevice-
DecSpecialGraphicsMode = FALSE;+ }++ GraphicChar =
(CHAR8)*WString;++ if (!(TerminalIsValidAscii (GraphicChar) ||
TerminalIsValidEfiCntlChar (GraphicChar))) {+ //+ // when this driver
use the OutputString to output control string,+ // TerminalDevice-
OutputEscChar is set to let the Esc char+ // to be output to the terminal
emulation software.+ //+ if ((GraphicChar == 27) &&
TerminalDevice->OutputEscChar) {+ GraphicChar = 27;+ } else {+
GraphicChar = '?';+ Warning = TRUE;+ }+ }+ }++ Status =
TerminalDevice->SerialIo->Write (+ TerminalDevice-
SerialIo,+ &Length,+ &GraphicChar+
);++ if (EFI_ERROR (Status)) {+ goto OutputError;+ }++ break;+
case TerminalTypeLinux: case TerminalTypeVtUtf8: UnicodeToUtf8
(*WString, &Utf8Char, &ValidBytes); Length = ValidBytes;@@ -280,8
+458,10 @@ TerminalConOutOutputString (
if (EFI_ERROR (Status)) { goto OutputError; }+ break; }+ //
// Update cursor position. //@@ -875,7 +1055,8 @@ BOOLEAN
TerminalIsValidTextGraphics ( IN CHAR16 Graphic, OUT CHAR8 *PcAnsi,
OPTIONAL- OUT CHAR8 *Ascii OPTIONAL+ OUT CHAR8 *Ascii, OPTIONAL+
OUT CHAR8 *DecSpecialGraphics OPTIONAL ) { UNICODE_TO_CHAR
*Table;@@ -897,6 +1078,9 @@ TerminalIsValidTextGraphics (
if (Ascii != NULL) { *Ascii = Table->Ascii; }+ if (DecSpecialGraphics
!= NULL){+ *DecSpecialGraphics = Table->DecSpecialGraphics;+ }
return TRUE; }--
2.32.0



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