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Refine the logic to handle the device path info get from string token.

Browse Source 
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13632 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ydong10
2012-08-14 09:52:25 +00:00
parent d0bf562330
commit 33efdf51b0
4 changed files with 121 additions and 40 deletions
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87
MdeModulePkg/Universal/SetupBrowserDxe/Ui.c
View File

@@ -1948,6 +1948,55 @@ FormSetGuidToHiiHandle (
return HiiHandle;
}
/**
Transfer the device path string to binary format.
@param StringPtr The device path string info.
@retval Device path binary info.
**/
EFI_DEVICE_PATH_PROTOCOL *
ConvertDevicePathFromText (
IN CHAR16 *StringPtr
)
{
UINTN BufferSize;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
CHAR16 TemStr[2];
UINT8 *DevicePathBuffer;
UINTN Index;
UINT8 DigitUint8;
ASSERT (StringPtr != NULL);
BufferSize = StrLen (StringPtr) / 2;
DevicePath = AllocatePool (BufferSize);
ASSERT (DevicePath != NULL);
//
// Convert from Device Path String to DevicePath Buffer in the reverse order.
//
DevicePathBuffer = (UINT8 *) DevicePath;
for (Index = 0; StringPtr[Index] != L'\0'; Index ++) {
TemStr[0] = StringPtr[Index];
DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
if (DigitUint8 == 0 && TemStr[0] != L'0') {
//
// Invalid Hex Char as the tail.
//
break;
}
if ((Index & 1) == 0) {
DevicePathBuffer [Index/2] = DigitUint8;
} else {
DevicePathBuffer [Index/2] = (UINT8) ((DevicePathBuffer [Index/2] << 4) + DigitUint8);
}
}
return DevicePath;
}
/**
Process the goto op code, update the info in the selection structure.
@@ -1968,13 +2017,7 @@ ProcessGotoOpCode (
)
{
CHAR16 *StringPtr;
UINTN StringLen;
UINTN BufferSize;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
CHAR16 TemStr[2];
UINT8 *DevicePathBuffer;
UINTN Index;
UINT8 DigitUint8;
FORM_BROWSER_FORM *RefForm;
EFI_INPUT_KEY Key;
EFI_STATUS Status;
@@ -1984,22 +2027,18 @@ ProcessGotoOpCode (
Status = EFI_SUCCESS;
UpdateFormInfo = TRUE;
StringPtr = NULL;
StringLen = 0;
//
// Prepare the device path check, get the device path info first.
//
if (Statement->HiiValue.Value.ref.DevicePath != 0) {
StringPtr = GetToken (Statement->HiiValue.Value.ref.DevicePath, Selection->FormSet->HiiHandle);
if (StringPtr != NULL) {
StringLen = StrLen (StringPtr);
}
}
//
// Check whether the device path string is a valid string.
//
if (Statement->HiiValue.Value.ref.DevicePath != 0 && StringPtr != NULL && StringLen != 0) {
if (Statement->HiiValue.Value.ref.DevicePath != 0 && StringPtr != NULL) {
if (Selection->Form->ModalForm) {
return Status;
}
@@ -2007,33 +2046,11 @@ ProcessGotoOpCode (
// Goto another Hii Package list
//
Selection->Action = UI_ACTION_REFRESH_FORMSET;
BufferSize = StrLen (StringPtr) / 2;
DevicePath = AllocatePool (BufferSize);
ASSERT (DevicePath != NULL);
//
// Convert from Device Path String to DevicePath Buffer in the reverse order.
//
DevicePathBuffer = (UINT8 *) DevicePath;
for (Index = 0; StringPtr[Index] != L'\0'; Index ++) {
TemStr[0] = StringPtr[Index];
DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
if (DigitUint8 == 0 && TemStr[0] != L'0') {
//
// Invalid Hex Char as the tail.
//
break;
}
if ((Index & 1) == 0) {
DevicePathBuffer [Index/2] = DigitUint8;
} else {
DevicePathBuffer [Index/2] = (UINT8) ((DevicePathBuffer [Index/2] << 4) + DigitUint8);
}
}
FreePool (StringPtr);
DevicePath = ConvertDevicePathFromText (StringPtr);
Selection->Handle = DevicePathToHiiHandle (DevicePath);
FreePool (DevicePath);
FreePool (StringPtr);
if (Selection->Handle == NULL) {
//