StdLib: Some deployed versions of the Simple Text Input Protocol randomly return...
authorDaryl McDaniel <daryl.mcdaniel@intel.com>
Tue, 28 Oct 2014 19:20:48 +0000 (19:20 +0000)
committerdarylm503 <darylm503@Edk2>
Tue, 28 Oct 2014 19:20:48 +0000 (19:20 +0000)
commit24903bc48a324d42b284805ede9c5ee1db906e44
tree6b4c30e9269adb5b2250d6f0f51a047ec76d96b0
parent8dd618d2110bea0d3c3073b66eb51bc622e81c68
StdLib:  Some deployed versions of the Simple Text Input Protocol randomly return either NUL characters or Scan Codes when just typing normal text.  These changes filter out NUL characters and make Scan Code and error handling more robust.

StdLibPrivateInternalFiles/Include/Device/Console.h: Change UnGetKey, in the ConInstance structure, from an EFI_INPUT_KEY structure to a CHAR16 variable.

Include/sys/termios.h: Add CHAR_SUB and CHAR_ESC for translation of '^Z' and the Escape Scan Code into the EOF and ESC characters, respectively.

LibC/Uefi/Devices/Console/daConsole.c:  Add da_ConRawRead() function to simplify the read logic. Discard NUL characters from the input stream.  In Blocking mode, retry until a non-NUL character is received.  In NonBlocking mode, a NUL causes an EAGAIN error to be returned.  Translate the Escape Scan Code into an ESC character.  If Scan Codes are ignored, retry if in Blocking mode else return an EAGAIN error.  UnGetKey becomes a single wide character instead of a structure.
    Change da_Poll() to use da_ConRawRead().

LibC/Uefi/InteractiveIO/IIOutilities.c:  BUG fix.  Return the processed input character instead of the raw character.  Allows EOF propagation.

LibC/Uefi/InteractiveIO/CanonRead.c:  Enable EOF propagation.

LibC/Uefi/InteractiveIO/IIOechoCtrl.h:  Use symbols defined in termios.h instead of hard-coded constant numbers.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Daryl McDaniel <daryl.mcdaniel@intel.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16254 6f19259b-4bc3-4df7-8a09-765794883524
StdLib/Include/sys/termios.h
StdLib/LibC/Uefi/Devices/Console/daConsole.c
StdLib/LibC/Uefi/InteractiveIO/CanonRead.c
StdLib/LibC/Uefi/InteractiveIO/IIOechoCtrl.h
StdLib/LibC/Uefi/InteractiveIO/IIOutilities.c
StdLibPrivateInternalFiles/Include/Device/Console.h