You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
133 lines
3.6 KiB
133 lines
3.6 KiB
/*++
|
|
|
|
Copyright (c) 1992 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
misc.c
|
|
|
|
Abstract:
|
|
|
|
This is the console fullscreen driver for the VGA card.
|
|
|
|
Environment:
|
|
|
|
kernel mode only
|
|
|
|
Notes:
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include "fsvga.h"
|
|
|
|
|
|
int
|
|
ConvertOutputToOem(
|
|
IN LPWSTR Source,
|
|
IN int SourceLength, // in chars
|
|
OUT LPSTR Target,
|
|
IN int TargetLength // in chars
|
|
)
|
|
/*
|
|
Converts SourceLength Unicode characters from Source into
|
|
not more than TargetLength Codepage characters at Target.
|
|
Returns the number characters put in Target. (0 if failure)
|
|
|
|
[ntcon\server\misc.c]
|
|
*/
|
|
|
|
{
|
|
NTSTATUS Status;
|
|
int Length;
|
|
UNICODE_STRING SourceUni;
|
|
ANSI_STRING TargetAns;
|
|
CHAR AnsBuf[256];
|
|
|
|
SourceUni.MaximumLength =
|
|
SourceUni.Length = SourceLength * sizeof(WCHAR);
|
|
SourceUni.Buffer = Source;
|
|
|
|
TargetAns.Length = 0;
|
|
TargetAns.MaximumLength = sizeof(AnsBuf);
|
|
TargetAns.Buffer = AnsBuf;
|
|
|
|
// Can do this in place
|
|
Status = RtlUnicodeStringToAnsiString(&TargetAns,
|
|
&SourceUni,
|
|
FALSE);
|
|
if (NT_SUCCESS(Status)) {
|
|
Length = strlen(AnsBuf);
|
|
if (Length <= TargetLength) {
|
|
RtlMoveMemory(Target, AnsBuf, Length);
|
|
return Length;
|
|
}
|
|
else {
|
|
return 0;
|
|
}
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/***************************************************************************\
|
|
* TranslateOutputToOem
|
|
*
|
|
* routine to translate console PCHAR_INFO to the ASCII from Unicode
|
|
*
|
|
* [ntcon\server\fe\direct2.c]
|
|
\***************************************************************************/
|
|
NTSTATUS
|
|
TranslateOutputToOem(
|
|
OUT PCHAR_IMAGE_INFO OutputBuffer,
|
|
IN PCHAR_IMAGE_INFO InputBuffer,
|
|
IN ULONG Length
|
|
)
|
|
{
|
|
CHAR AsciiDbcs[2];
|
|
ULONG NumBytes;
|
|
|
|
while (Length--)
|
|
{
|
|
if (InputBuffer->CharInfo.Attributes & COMMON_LVB_LEADING_BYTE)
|
|
{
|
|
if (Length >= 2) // Safe DBCS in buffer ?
|
|
{
|
|
Length--;
|
|
NumBytes = sizeof(AsciiDbcs);
|
|
NumBytes = ConvertOutputToOem(&InputBuffer->CharInfo.Char.UnicodeChar,
|
|
1,
|
|
&AsciiDbcs[0],
|
|
NumBytes);
|
|
OutputBuffer->CharInfo.Char.AsciiChar = AsciiDbcs[0];
|
|
OutputBuffer->CharInfo.Attributes = InputBuffer->CharInfo.Attributes;
|
|
OutputBuffer++;
|
|
InputBuffer++;
|
|
OutputBuffer->CharInfo.Char.AsciiChar = AsciiDbcs[1];
|
|
OutputBuffer->CharInfo.Attributes = InputBuffer->CharInfo.Attributes;
|
|
OutputBuffer++;
|
|
InputBuffer++;
|
|
}
|
|
else
|
|
{
|
|
OutputBuffer->CharInfo.Char.AsciiChar = ' ';
|
|
OutputBuffer->CharInfo.Attributes = InputBuffer->CharInfo.Attributes & ~COMMON_LVB_SBCSDBCS;
|
|
OutputBuffer++;
|
|
InputBuffer++;
|
|
}
|
|
}
|
|
else if (! (InputBuffer->CharInfo.Attributes & COMMON_LVB_SBCSDBCS))
|
|
{
|
|
ConvertOutputToOem(&InputBuffer->CharInfo.Char.UnicodeChar,
|
|
1,
|
|
&OutputBuffer->CharInfo.Char.AsciiChar,
|
|
1);
|
|
OutputBuffer->CharInfo.Attributes = InputBuffer->CharInfo.Attributes;
|
|
OutputBuffer++;
|
|
InputBuffer++;
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|