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/** @file
Member functions of EFI_SHELL_PARAMETERS_PROTOCOL and functions for creation,
manipulation, and initialization of EFI_SHELL_PARAMETERS_PROTOCOL.
Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _SHELL_PARAMETERS_PROTOCOL_PROVIDER_HEADER_
#define _SHELL_PARAMETERS_PROTOCOL_PROVIDER_HEADER_
#include <Uefi.h>
#include <Protocol/SimpleFileSystem.h>
#include <Protocol/EfiShellParameters.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/SimpleTextOut.h>
#include <Protocol/SimpleTextIn.h>
#include <Guid/ShellVariableGuid.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiLib.h>
#include <Library/DebugLib.h>
#include <Library/ShellLib.h>
#include <Library/FileHandleLib.h>
#include "ShellEnvVar.h"
#include "FileHandleWrappers.h"
#include "Shell.h"
/**
creates a new EFI_SHELL_PARAMETERS_PROTOCOL instance and populates it and then
installs it on our handle and if there is an existing version of the protocol
that one is cached for removal later.
@param[in, out] NewShellParameters on a successful return, a pointer to pointer
to the newly installed interface.
@param[in, out] RootShellInstance on a successful return, pointer to boolean.
TRUE if this is the root shell instance.
@retval EFI_SUCCESS the operation completed successfully.
@return other the operation failed.
@sa ReinstallProtocolInterface
@sa InstallProtocolInterface
@sa ParseCommandLineToArgs
**/
EFI_STATUS
EFIAPI
CreatePopulateInstallShellParametersProtocol (
IN OUT EFI_SHELL_PARAMETERS_PROTOCOL **NewShellParameters,
IN OUT BOOLEAN *RootShellInstance
);
/**
frees all memory used by createion and installation of shell parameters protocol
and if there was an old version installed it will restore that one.
@param NewShellParameters the interface of EFI_SHELL_PARAMETERS_PROTOCOL that is
being cleaned up.
@retval EFI_SUCCESS the cleanup was successful
@return other the cleanup failed
@sa ReinstallProtocolInterface
@sa UninstallProtocolInterface
**/
EFI_STATUS
EFIAPI
CleanUpShellParametersProtocol (
IN OUT EFI_SHELL_PARAMETERS_PROTOCOL *NewShellParameters
);
/**
Funcion will replace the current Argc and Argv in the ShellParameters protocol
structure by parsing NewCommandLine. The current values are returned to the
user.
@param[in, out] ShellParameters pointer to parameter structure to modify
@param[in] NewCommandLine the new command line to parse and use
@param[out] OldArgv pointer to old list of parameters
@param[out] OldArgc pointer to old number of items in Argv list
@retval EFI_SUCCESS operation was sucessful, Argv and Argc are valid
@retval EFI_OUT_OF_RESOURCES a memory allocation failed.
**/
EFI_STATUS
EFIAPI
UpdateArgcArgv(
IN OUT EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters,
IN CONST CHAR16 *NewCommandLine,
OUT CHAR16 ***OldArgv,
OUT UINTN *OldArgc
);
/**
Funcion will replace the current Argc and Argv in the ShellParameters protocol
structure with Argv and Argc. The current values are de-allocated and the
OldArgv must not be deallocated by the caller.
@param[in, out] ShellParameters pointer to parameter structure to modify
@param[in] OldArgv pointer to old list of parameters
@param[in] OldArgc pointer to old number of items in Argv list
**/
VOID
EFIAPI
RestoreArgcArgv(
IN OUT EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters,
IN CHAR16 ***OldArgv,
IN UINTN *OldArgc
);
typedef struct {
EFI_SIMPLE_TEXT_INPUT_PROTOCOL *ConIn;
EFI_HANDLE ConInHandle;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConOut;
EFI_HANDLE ConOutHandle;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConErr;
EFI_HANDLE ConErrHandle;
} SYSTEM_TABLE_INFO;
/**
Funcion will replace the current StdIn and StdOut in the ShellParameters protocol
structure by parsing NewCommandLine. The current values are returned to the
user.
This will also update the system table.
@param[in, out] ShellParameters Pointer to parameter structure to modify.
@param[in] NewCommandLine The new command line to parse and use.
@param[out] OldStdIn Pointer to old StdIn.
@param[out] OldStdOut Pointer to old StdOut.
@param[out] OldStdErr Pointer to old StdErr.
@param[out] SystemTableInfo Pointer to old system table information.
@retval EFI_SUCCESS Operation was sucessful, Argv and Argc are valid.
@retval EFI_OUT_OF_RESOURCES A memory allocation failed.
**/
EFI_STATUS
EFIAPI
UpdateStdInStdOutStdErr(
IN OUT EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters,
IN CHAR16 *NewCommandLine,
OUT SHELL_FILE_HANDLE *OldStdIn,
OUT SHELL_FILE_HANDLE *OldStdOut,
OUT SHELL_FILE_HANDLE *OldStdErr,
OUT SYSTEM_TABLE_INFO *SystemTableInfo
);
/**
Funcion will replace the current StdIn and StdOut in the ShellParameters protocol
structure with StdIn and StdOut. The current values are de-allocated.
@param[in, out] ShellParameters Pointer to parameter structure to modify.
@param[in] OldStdIn Pointer to old StdIn.
@param[in] OldStdOut Pointer to old StdOut.
@param[in] OldStdErr Pointer to old StdErr.
@param[in] SystemTableInfo Pointer to old system table information.
**/
EFI_STATUS
EFIAPI
RestoreStdInStdOutStdErr (
IN OUT EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters,
IN SHELL_FILE_HANDLE *OldStdIn,
IN SHELL_FILE_HANDLE *OldStdOut,
IN SHELL_FILE_HANDLE *OldStdErr,
IN SYSTEM_TABLE_INFO *SystemTableInfo
);
/**
function to populate Argc and Argv.
This function parses the CommandLine and divides it into standard C style Argc/Argv
parameters for inclusion in EFI_SHELL_PARAMETERS_PROTOCOL. this supports space
delimited and quote surrounded parameter definition.
@param[in] CommandLine String of command line to parse
@param[in, out] Argv pointer to array of strings; one for each parameter
@param[in, out] Argc pointer to number of strings in Argv array
@return EFI_SUCCESS the operation was sucessful
@return EFI_OUT_OF_RESOURCES a memory allocation failed.
**/
EFI_STATUS
EFIAPI
ParseCommandLineToArgs(
IN CONST CHAR16 *CommandLine,
IN OUT CHAR16 ***Argv,
IN OUT UINTN *Argc
);
/**
return the next parameter from a command line string;
This function moves the next parameter from Walker into TempParameter and moves
Walker up past that parameter for recursive calling. When the final parameter
is moved *Walker will be set to NULL;
Temp Parameter must be large enough to hold the parameter before calling this
function.
@param[in, out] Walker pointer to string of command line. Adjusted to
reminaing command line on return
@param[in, out] TempParameter pointer to string of command line item extracted.
**/
VOID
EFIAPI
GetNextParameter(
CHAR16 **Walker,
CHAR16 **TempParameter
);
#endif //_SHELL_PARAMETERS_PROTOCOL_PROVIDER_HEADER_
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