if 'ReadKeyStroke' function return EFI_NOT_READY then skip it, but if the return value is EFI_DEVICE_ERROR ,empty the currentString buffer.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Pedroa Liu <[email protected]> --- ShellPkg/Application/Shell/FileHandleWrappers.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/ShellPkg/Application/Shell/FileHandleWrappers.c b/ShellPkg/Application/Shell/FileHandleWrappers.c index 0e5efe3..f64915d 100644 --- a/ShellPkg/Application/Shell/FileHandleWrappers.c +++ b/ShellPkg/Application/Shell/FileHandleWrappers.c @@ -422,6 +422,12 @@ FileInterfaceStdInRead( gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex); Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key); if (EFI_ERROR (Status)) { + + if (Status == EFI_NOT_READY) + continue; + + ZeroMem (CurrentString, MaxStr * sizeof(CHAR16)); + StringLen = 0; break; } -- 2.1.4 On 2016年05月15日 15:42, Pedroa wrote: > when the user press "shift" key , the shell core read the data from > STDIN and thought that a bad value so it resume then reset the position > of the cursor > and keep waiting for user input. > > if use "ReadKeyStroke" function to read STDIN when it read a "shift" key > ,it would return a value "EFI_NOT_READY". so we can skip it or use > "ReadKeyStrokeEx" to replace it. > > diff --git a/ShellPkg/Application/Shell/FileHandleWrappers.c > b/ShellPkg/Application/Shell/FileHandleWrappers.c > index 0e5efe3..dcc2225 100644 > --- a/ShellPkg/Application/Shell/FileHandleWrappers.c > +++ b/ShellPkg/Application/Shell/FileHandleWrappers.c > @@ -421,7 +421,7 @@ FileInterfaceStdInRead( > // > gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex); > Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key); > - if (EFI_ERROR (Status)) { > + if (EFI_ERROR (Status) && Status != EFI_NOT_READY) { > break; > } _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
