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ShellPkg: Refactor updating command line for help use 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-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@14985 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jaben Carsey 2013-12-13 21:58:51 +00:00 committed by jcarsey
parent ceecdc62ab
commit 5a5eb8069c
1 changed files with 55 additions and 23 deletions
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78
ShellPkg/Application/Shell/Shell.c
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@ -1655,6 +1655,57 @@ ChangeMappedDrive(
return (Status);
}
/**
Reprocess the command line to direct all -? to the help command.
if found, will add "help" as argv[0], and move the rest later.
@param[in,out] Argc The pointer to argc to update
@param[in,out] Argv The pointer to argv to update (this is a pointer to an array of string pointers)
**/
EFI_STATUS
EFIAPI
DoHelpUpdateArgcArgv(
IN OUT UINTN *Argc,
IN OUT CHAR16 ***Argv
)
{
UINTN Count;
UINTN Count2;
//
// Check each parameter
//
for (Count = 0 ; Count < (*Argc) ; Count++) {
//
// if it's "-?" or if the first parameter is "?"
//
if (StrStr((*Argv)[Count], L"-?") == (*Argv)[Count]
|| ((*Argv)[0][0] == L'?' && (*Argv)[0][1] == CHAR_NULL)
) {
//
// We need to redo the arguments since a parameter was -?
// move them all down 1 to the end, then up one then replace the first with help
//
FreePool((*Argv)[Count]);
(*Argv)[Count] = NULL;
for (Count2 = Count ; (Count2 + 1) < (*Argc) ; Count2++) {
(*Argv)[Count2] = (*Argv)[Count2+1];
}
(*Argv)[Count2] = NULL;
for (Count2 = (*Argc) -1 ; Count2 > 0 ; Count2--) {
(*Argv)[Count2] = (*Argv)[Count2-1];
}
(*Argv)[0] = NULL;
(*Argv)[0] = StrnCatGrow(&(*Argv)[0], NULL, L"help", 0);
if ((*Argv)[0] == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
break;
}
}
return (EFI_SUCCESS);
}
/**
Function will process and run a command line.
@ -1688,8 +1739,6 @@ RunCommand(
SHELL_FILE_HANDLE OriginalStdOut;
SHELL_FILE_HANDLE OriginalStdErr;
SYSTEM_TABLE_INFO OriginalSystemTableInfo;
UINTN Count;
UINTN Count2;
CHAR16 *CleanOriginal;
ASSERT(CmdLine != NULL);
@ -1770,27 +1819,10 @@ RunCommand(
Status = UpdateArgcArgv(ShellInfoObject.NewShellParametersProtocol, CleanOriginal, &Argv, &Argc);
ASSERT_EFI_ERROR(Status);
for (Count = 0 ; Count < ShellInfoObject.NewShellParametersProtocol->Argc ; Count++) {
if (StrStr(ShellInfoObject.NewShellParametersProtocol->Argv[Count], L"-?") == ShellInfoObject.NewShellParametersProtocol->Argv[Count]
|| (ShellInfoObject.NewShellParametersProtocol->Argv[0][0] == L'?' && ShellInfoObject.NewShellParametersProtocol->Argv[0][1] == CHAR_NULL)
) {
//
// We need to redo the arguments since a parameter was -?
// move them all down 1 to the end, then up one then replace the first with help
//
FreePool(ShellInfoObject.NewShellParametersProtocol->Argv[Count]);
ShellInfoObject.NewShellParametersProtocol->Argv[Count] = NULL;
for (Count2 = Count ; (Count2 + 1) < ShellInfoObject.NewShellParametersProtocol->Argc ; Count2++) {
ShellInfoObject.NewShellParametersProtocol->Argv[Count2] = ShellInfoObject.NewShellParametersProtocol->Argv[Count2+1];
}
ShellInfoObject.NewShellParametersProtocol->Argv[Count2] = NULL;
for (Count2 = ShellInfoObject.NewShellParametersProtocol->Argc -1 ; Count2 > 0 ; Count2--) {
ShellInfoObject.NewShellParametersProtocol->Argv[Count2] = ShellInfoObject.NewShellParametersProtocol->Argv[Count2-1];
}
ShellInfoObject.NewShellParametersProtocol->Argv[0] = NULL;
ShellInfoObject.NewShellParametersProtocol->Argv[0] = StrnCatGrow(&ShellInfoObject.NewShellParametersProtocol->Argv[0], NULL, L"help", 0);
break;
}
if (StrStr(CleanOriginal, L"?") != NULL) {
Status = DoHelpUpdateArgcArgv(
&ShellInfoObject.NewShellParametersProtocol->Argc,
&ShellInfoObject.NewShellParametersProtocol->Argv);
}
//