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1 /** @file
2   EFI_FILE_PROTOCOL wrappers for other items (Like Environment Variables, StdIn, StdOut, StdErr, etc...)
3 
4   Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
5   This program and the accompanying materials
6   are licensed and made available under the terms and conditions of the BSD License
7   which accompanies this distribution.  The full text of the license may be found at
8   http://opensource.org/licenses/bsd-license.php
9 
10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12 
13 **/
14 
15 #ifndef _SHELL_FILE_HANDLE_WRAPPERS_HEADER_
16 #define _SHELL_FILE_HANDLE_WRAPPERS_HEADER_
17 
18 typedef struct {
19   LIST_ENTRY        Link;
20   CHAR16*           Buffer;
21 } SHELL_LINE_LIST;
22 
23 typedef struct {
24   UINTN             LogCount;
25   SHELL_LINE_LIST   *Log;
26 } SHELL_LINE_LOG;
27 
28 ///
29 /// FILE sytle interfaces for StdIn.
30 ///
31 extern EFI_FILE_PROTOCOL FileInterfaceStdIn;
32 
33 ///
34 /// FILE sytle interfaces for StdOut.
35 ///
36 extern EFI_FILE_PROTOCOL FileInterfaceStdOut;
37 
38 ///
39 /// FILE sytle interfaces for StdErr.
40 ///
41 extern EFI_FILE_PROTOCOL FileInterfaceStdErr;
42 
43 ///
44 /// FILE style interface for NUL file.
45 ///
46 extern EFI_FILE_PROTOCOL FileInterfaceNulFile;
47 
48 /**
49   Creates a EFI_FILE_PROTOCOL (almost) object for using to access
50   environment variables through file operations.
51 
52   @param EnvName    The name of the Environment Variable to be operated on.
53 
54   @retval NULL      Memory could not be allocated.
55   @return other     a pointer to an EFI_FILE_PROTOCOL structure
56 **/
57 EFI_FILE_PROTOCOL*
58 CreateFileInterfaceEnv(
59   CONST CHAR16 *EnvName
60   );
61 
62 /**
63   Creates a EFI_FILE_PROTOCOL (almost) object for using to access
64   a file entirely in memory through file operations.
65 
66   @param[in] Unicode  TRUE if the data is UNICODE, FALSE otherwise.
67 
68   @retval NULL      Memory could not be allocated.
69   @return other     a pointer to an EFI_FILE_PROTOCOL structure
70 **/
71 EFI_FILE_PROTOCOL*
72 CreateFileInterfaceMem(
73   IN CONST BOOLEAN Unicode
74   );
75 
76 /**
77   Creates a EFI_FILE_PROTOCOL (almost) object for using to access
78   a file entirely with unicode awareness through file operations.
79 
80   @param[in] Template The pointer to the handle to start with.
81   @param[in] Unicode  TRUE if the data is UNICODE, FALSE otherwise.
82 
83   @retval NULL      Memory could not be allocated.
84   @return other     a pointer to an EFI_FILE_PROTOCOL structure
85 **/
86 EFI_FILE_PROTOCOL*
87 CreateFileInterfaceFile(
88   IN CONST EFI_FILE_PROTOCOL  *Template,
89   IN CONST BOOLEAN            Unicode
90   );
91 
92 #endif //_SHELL_FILE_HANDLE_WRAPPERS_HEADER_
93 
94