1bc36eafdSMike Gerdts /******************************************************************************
2bc36eafdSMike Gerdts *
3bc36eafdSMike Gerdts * Module Name: acgetline - local line editing
4bc36eafdSMike Gerdts *
5bc36eafdSMike Gerdts *****************************************************************************/
6bc36eafdSMike Gerdts
7*35786f68SRobert Mustacchi /******************************************************************************
8*35786f68SRobert Mustacchi *
9*35786f68SRobert Mustacchi * 1. Copyright Notice
10*35786f68SRobert Mustacchi *
11*35786f68SRobert Mustacchi * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12bc36eafdSMike Gerdts * All rights reserved.
13bc36eafdSMike Gerdts *
14*35786f68SRobert Mustacchi * 2. License
15*35786f68SRobert Mustacchi *
16*35786f68SRobert Mustacchi * 2.1. This is your license from Intel Corp. under its intellectual property
17*35786f68SRobert Mustacchi * rights. You may have additional license terms from the party that provided
18*35786f68SRobert Mustacchi * you this software, covering your right to use that party's intellectual
19*35786f68SRobert Mustacchi * property rights.
20*35786f68SRobert Mustacchi *
21*35786f68SRobert Mustacchi * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22*35786f68SRobert Mustacchi * copy of the source code appearing in this file ("Covered Code") an
23*35786f68SRobert Mustacchi * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24*35786f68SRobert Mustacchi * base code distributed originally by Intel ("Original Intel Code") to copy,
25*35786f68SRobert Mustacchi * make derivatives, distribute, use and display any portion of the Covered
26*35786f68SRobert Mustacchi * Code in any form, with the right to sublicense such rights; and
27*35786f68SRobert Mustacchi *
28*35786f68SRobert Mustacchi * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29*35786f68SRobert Mustacchi * license (with the right to sublicense), under only those claims of Intel
30*35786f68SRobert Mustacchi * patents that are infringed by the Original Intel Code, to make, use, sell,
31*35786f68SRobert Mustacchi * offer to sell, and import the Covered Code and derivative works thereof
32*35786f68SRobert Mustacchi * solely to the minimum extent necessary to exercise the above copyright
33*35786f68SRobert Mustacchi * license, and in no event shall the patent license extend to any additions
34*35786f68SRobert Mustacchi * to or modifications of the Original Intel Code. No other license or right
35*35786f68SRobert Mustacchi * is granted directly or by implication, estoppel or otherwise;
36*35786f68SRobert Mustacchi *
37*35786f68SRobert Mustacchi * The above copyright and patent license is granted only if the following
38*35786f68SRobert Mustacchi * conditions are met:
39*35786f68SRobert Mustacchi *
40*35786f68SRobert Mustacchi * 3. Conditions
41*35786f68SRobert Mustacchi *
42*35786f68SRobert Mustacchi * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
44*35786f68SRobert Mustacchi * Code or modification with rights to further distribute source must include
45*35786f68SRobert Mustacchi * the above Copyright Notice, the above License, this list of Conditions,
46*35786f68SRobert Mustacchi * and the following Disclaimer and Export Compliance provision. In addition,
47*35786f68SRobert Mustacchi * Licensee must cause all Covered Code to which Licensee contributes to
48*35786f68SRobert Mustacchi * contain a file documenting the changes Licensee made to create that Covered
49*35786f68SRobert Mustacchi * Code and the date of any change. Licensee must include in that file the
50*35786f68SRobert Mustacchi * documentation of any changes made by any predecessor Licensee. Licensee
51*35786f68SRobert Mustacchi * must include a prominent statement that the modification is derived,
52*35786f68SRobert Mustacchi * directly or indirectly, from Original Intel Code.
53*35786f68SRobert Mustacchi *
54*35786f68SRobert Mustacchi * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
56*35786f68SRobert Mustacchi * Code or modification without rights to further distribute source must
57*35786f68SRobert Mustacchi * include the following Disclaimer and Export Compliance provision in the
58*35786f68SRobert Mustacchi * documentation and/or other materials provided with distribution. In
59*35786f68SRobert Mustacchi * addition, Licensee may not authorize further sublicense of source of any
60*35786f68SRobert Mustacchi * portion of the Covered Code, and must include terms to the effect that the
61*35786f68SRobert Mustacchi * license from Licensee to its licensee is limited to the intellectual
62*35786f68SRobert Mustacchi * property embodied in the software Licensee provides to its licensee, and
63*35786f68SRobert Mustacchi * not to intellectual property embodied in modifications its licensee may
64*35786f68SRobert Mustacchi * make.
65*35786f68SRobert Mustacchi *
66*35786f68SRobert Mustacchi * 3.3. Redistribution of Executable. Redistribution in executable form of any
67*35786f68SRobert Mustacchi * substantial portion of the Covered Code or modification must reproduce the
68*35786f68SRobert Mustacchi * above Copyright Notice, and the following Disclaimer and Export Compliance
69*35786f68SRobert Mustacchi * provision in the documentation and/or other materials provided with the
70*35786f68SRobert Mustacchi * distribution.
71*35786f68SRobert Mustacchi *
72*35786f68SRobert Mustacchi * 3.4. Intel retains all right, title, and interest in and to the Original
73*35786f68SRobert Mustacchi * Intel Code.
74*35786f68SRobert Mustacchi *
75*35786f68SRobert Mustacchi * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76*35786f68SRobert Mustacchi * Intel shall be used in advertising or otherwise to promote the sale, use or
77*35786f68SRobert Mustacchi * other dealings in products derived from or relating to the Covered Code
78*35786f68SRobert Mustacchi * without prior written authorization from Intel.
79*35786f68SRobert Mustacchi *
80*35786f68SRobert Mustacchi * 4. Disclaimer and Export Compliance
81*35786f68SRobert Mustacchi *
82*35786f68SRobert Mustacchi * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83*35786f68SRobert Mustacchi * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84*35786f68SRobert Mustacchi * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85*35786f68SRobert Mustacchi * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86*35786f68SRobert Mustacchi * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87*35786f68SRobert Mustacchi * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88*35786f68SRobert Mustacchi * PARTICULAR PURPOSE.
89*35786f68SRobert Mustacchi *
90*35786f68SRobert Mustacchi * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91*35786f68SRobert Mustacchi * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92*35786f68SRobert Mustacchi * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93*35786f68SRobert Mustacchi * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94*35786f68SRobert Mustacchi * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95*35786f68SRobert Mustacchi * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96*35786f68SRobert Mustacchi * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97*35786f68SRobert Mustacchi * LIMITED REMEDY.
98*35786f68SRobert Mustacchi *
99*35786f68SRobert Mustacchi * 4.3. Licensee shall not export, either directly or indirectly, any of this
100*35786f68SRobert Mustacchi * software or system incorporating such software without first obtaining any
101*35786f68SRobert Mustacchi * required license or other approval from the U. S. Department of Commerce or
102*35786f68SRobert Mustacchi * any other agency or department of the United States Government. In the
103*35786f68SRobert Mustacchi * event Licensee exports any such software from the United States or
104*35786f68SRobert Mustacchi * re-exports any such software from a foreign destination, Licensee shall
105*35786f68SRobert Mustacchi * ensure that the distribution and export/re-export of the software is in
106*35786f68SRobert Mustacchi * compliance with all laws, regulations, orders, or other restrictions of the
107*35786f68SRobert Mustacchi * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108*35786f68SRobert Mustacchi * any of its subsidiaries will export/re-export any technical data, process,
109*35786f68SRobert Mustacchi * software, or service, directly or indirectly, to any country for which the
110*35786f68SRobert Mustacchi * United States government or any agency thereof requires an export license,
111*35786f68SRobert Mustacchi * other governmental approval, or letter of assurance, without first obtaining
112*35786f68SRobert Mustacchi * such license, approval or letter.
113*35786f68SRobert Mustacchi *
114*35786f68SRobert Mustacchi *****************************************************************************
115*35786f68SRobert Mustacchi *
116*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
117*35786f68SRobert Mustacchi * following license:
118*35786f68SRobert Mustacchi *
119bc36eafdSMike Gerdts * Redistribution and use in source and binary forms, with or without
120bc36eafdSMike Gerdts * modification, are permitted provided that the following conditions
121bc36eafdSMike Gerdts * are met:
122bc36eafdSMike Gerdts * 1. Redistributions of source code must retain the above copyright
123bc36eafdSMike Gerdts * notice, this list of conditions, and the following disclaimer,
124bc36eafdSMike Gerdts * without modification.
125bc36eafdSMike Gerdts * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126bc36eafdSMike Gerdts * substantially similar to the "NO WARRANTY" disclaimer below
127bc36eafdSMike Gerdts * ("Disclaimer") and any redistribution must be conditioned upon
128bc36eafdSMike Gerdts * including a substantially similar Disclaimer requirement for further
129bc36eafdSMike Gerdts * binary redistribution.
130bc36eafdSMike Gerdts * 3. Neither the names of the above-listed copyright holders nor the names
131bc36eafdSMike Gerdts * of any contributors may be used to endorse or promote products derived
132bc36eafdSMike Gerdts * from this software without specific prior written permission.
133bc36eafdSMike Gerdts *
134bc36eafdSMike Gerdts * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135bc36eafdSMike Gerdts * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137bc36eafdSMike Gerdts * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138*35786f68SRobert Mustacchi * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139*35786f68SRobert Mustacchi * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140*35786f68SRobert Mustacchi * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141*35786f68SRobert Mustacchi * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142*35786f68SRobert Mustacchi * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143*35786f68SRobert Mustacchi * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144*35786f68SRobert Mustacchi * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145*35786f68SRobert Mustacchi *
146*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
147*35786f68SRobert Mustacchi * GNU General Public License ("GPL") version 2 as published by the Free
148*35786f68SRobert Mustacchi * Software Foundation.
149*35786f68SRobert Mustacchi *
150*35786f68SRobert Mustacchi *****************************************************************************/
151bc36eafdSMike Gerdts
152bc36eafdSMike Gerdts #include "acpi.h"
153bc36eafdSMike Gerdts #include "accommon.h"
154bc36eafdSMike Gerdts #include "amlcode.h"
155bc36eafdSMike Gerdts #include "acparser.h"
156bc36eafdSMike Gerdts #include "acdebug.h"
157bc36eafdSMike Gerdts
158bc36eafdSMike Gerdts /*
159bc36eafdSMike Gerdts * This is an os-independent implementation of line-editing services needed
160bc36eafdSMike Gerdts * by the AcpiExec utility. It uses getchar() and putchar() and the existing
161bc36eafdSMike Gerdts * history support provided by the AML debugger. It assumes that the terminal
162bc36eafdSMike Gerdts * is in the correct line-editing mode such as raw and noecho. The OSL
163bc36eafdSMike Gerdts * interface AcpiOsInitialize should do this. AcpiOsTerminate should put the
164bc36eafdSMike Gerdts * terminal back into the original mode.
165bc36eafdSMike Gerdts */
166bc36eafdSMike Gerdts #define _COMPONENT ACPI_OS_SERVICES
167bc36eafdSMike Gerdts ACPI_MODULE_NAME ("acgetline")
168bc36eafdSMike Gerdts
169bc36eafdSMike Gerdts
170bc36eafdSMike Gerdts /* Local prototypes */
171bc36eafdSMike Gerdts
172bc36eafdSMike Gerdts static void
173bc36eafdSMike Gerdts AcpiAcClearLine (
174bc36eafdSMike Gerdts UINT32 EndOfLine,
175bc36eafdSMike Gerdts UINT32 CursorPosition);
176bc36eafdSMike Gerdts
177bc36eafdSMike Gerdts /* Various ASCII constants */
178bc36eafdSMike Gerdts
179bc36eafdSMike Gerdts #define _ASCII_NUL 0
180bc36eafdSMike Gerdts #define _ASCII_BACKSPACE 0x08
181bc36eafdSMike Gerdts #define _ASCII_TAB 0x09
182bc36eafdSMike Gerdts #define _ASCII_ESCAPE 0x1B
183bc36eafdSMike Gerdts #define _ASCII_SPACE 0x20
184bc36eafdSMike Gerdts #define _ASCII_LEFT_BRACKET 0x5B
185bc36eafdSMike Gerdts #define _ASCII_DEL 0x7F
186bc36eafdSMike Gerdts #define _ASCII_UP_ARROW 'A'
187bc36eafdSMike Gerdts #define _ASCII_DOWN_ARROW 'B'
188bc36eafdSMike Gerdts #define _ASCII_RIGHT_ARROW 'C'
189bc36eafdSMike Gerdts #define _ASCII_LEFT_ARROW 'D'
190bc36eafdSMike Gerdts #define _ASCII_NEWLINE '\n'
191bc36eafdSMike Gerdts
192bc36eafdSMike Gerdts extern UINT32 AcpiGbl_NextCmdNum;
193bc36eafdSMike Gerdts
194bc36eafdSMike Gerdts /* Erase a single character on the input command line */
195bc36eafdSMike Gerdts
196bc36eafdSMike Gerdts #define ACPI_CLEAR_CHAR() \
197bc36eafdSMike Gerdts putchar (_ASCII_BACKSPACE); \
198bc36eafdSMike Gerdts putchar (_ASCII_SPACE); \
199bc36eafdSMike Gerdts putchar (_ASCII_BACKSPACE);
200bc36eafdSMike Gerdts
201bc36eafdSMike Gerdts /* Backup cursor by Count positions */
202bc36eafdSMike Gerdts
203bc36eafdSMike Gerdts #define ACPI_BACKUP_CURSOR(i, Count) \
204bc36eafdSMike Gerdts for (i = 0; i < (Count); i++) \
205bc36eafdSMike Gerdts {putchar (_ASCII_BACKSPACE);}
206bc36eafdSMike Gerdts
207bc36eafdSMike Gerdts
208bc36eafdSMike Gerdts /******************************************************************************
209bc36eafdSMike Gerdts *
210bc36eafdSMike Gerdts * FUNCTION: AcpiAcClearLine
211bc36eafdSMike Gerdts *
212bc36eafdSMike Gerdts * PARAMETERS: EndOfLine - Current end-of-line index
213bc36eafdSMike Gerdts * CursorPosition - Current cursor position within line
214bc36eafdSMike Gerdts *
215bc36eafdSMike Gerdts * RETURN: None
216bc36eafdSMike Gerdts *
217bc36eafdSMike Gerdts * DESCRIPTION: Clear the entire command line the hard way, but probably the
218bc36eafdSMike Gerdts * most portable.
219bc36eafdSMike Gerdts *
220bc36eafdSMike Gerdts *****************************************************************************/
221bc36eafdSMike Gerdts
222bc36eafdSMike Gerdts static void
AcpiAcClearLine(UINT32 EndOfLine,UINT32 CursorPosition)223bc36eafdSMike Gerdts AcpiAcClearLine (
224bc36eafdSMike Gerdts UINT32 EndOfLine,
225bc36eafdSMike Gerdts UINT32 CursorPosition)
226bc36eafdSMike Gerdts {
227bc36eafdSMike Gerdts UINT32 i;
228bc36eafdSMike Gerdts
229bc36eafdSMike Gerdts
230bc36eafdSMike Gerdts if (CursorPosition < EndOfLine)
231bc36eafdSMike Gerdts {
232bc36eafdSMike Gerdts /* Clear line from current position to end of line */
233bc36eafdSMike Gerdts
234bc36eafdSMike Gerdts for (i = 0; i < (EndOfLine - CursorPosition); i++)
235bc36eafdSMike Gerdts {
236bc36eafdSMike Gerdts putchar (' ');
237bc36eafdSMike Gerdts }
238bc36eafdSMike Gerdts }
239bc36eafdSMike Gerdts
240bc36eafdSMike Gerdts /* Clear the entire line */
241bc36eafdSMike Gerdts
242bc36eafdSMike Gerdts for (; EndOfLine > 0; EndOfLine--)
243bc36eafdSMike Gerdts {
244bc36eafdSMike Gerdts ACPI_CLEAR_CHAR ();
245bc36eafdSMike Gerdts }
246bc36eafdSMike Gerdts }
247bc36eafdSMike Gerdts
248bc36eafdSMike Gerdts
249bc36eafdSMike Gerdts /******************************************************************************
250bc36eafdSMike Gerdts *
251bc36eafdSMike Gerdts * FUNCTION: AcpiOsGetLine
252bc36eafdSMike Gerdts *
253bc36eafdSMike Gerdts * PARAMETERS: Buffer - Where to return the command line
254bc36eafdSMike Gerdts * BufferLength - Maximum length of Buffer
255bc36eafdSMike Gerdts * BytesRead - Where the actual byte count is returned
256bc36eafdSMike Gerdts *
257bc36eafdSMike Gerdts * RETURN: Status and actual bytes read
258bc36eafdSMike Gerdts *
259bc36eafdSMike Gerdts * DESCRIPTION: Get the next input line from the terminal. NOTE: terminal
260bc36eafdSMike Gerdts * is expected to be in a mode that supports line-editing (raw,
261bc36eafdSMike Gerdts * noecho). This function is intended to be very portable. Also,
262bc36eafdSMike Gerdts * it uses the history support implemented in the AML debugger.
263bc36eafdSMike Gerdts *
264bc36eafdSMike Gerdts *****************************************************************************/
265bc36eafdSMike Gerdts
266bc36eafdSMike Gerdts ACPI_STATUS
AcpiOsGetLine(char * Buffer,UINT32 BufferLength,UINT32 * BytesRead)267bc36eafdSMike Gerdts AcpiOsGetLine (
268bc36eafdSMike Gerdts char *Buffer,
269bc36eafdSMike Gerdts UINT32 BufferLength,
270bc36eafdSMike Gerdts UINT32 *BytesRead)
271bc36eafdSMike Gerdts {
272bc36eafdSMike Gerdts char *NextCommand;
273bc36eafdSMike Gerdts UINT32 MaxCommandIndex = AcpiGbl_NextCmdNum - 1;
274bc36eafdSMike Gerdts UINT32 CurrentCommandIndex = MaxCommandIndex;
275bc36eafdSMike Gerdts UINT32 PreviousCommandIndex = MaxCommandIndex;
276bc36eafdSMike Gerdts int InputChar;
277bc36eafdSMike Gerdts UINT32 CursorPosition = 0;
278bc36eafdSMike Gerdts UINT32 EndOfLine = 0;
279bc36eafdSMike Gerdts UINT32 i;
280bc36eafdSMike Gerdts
281bc36eafdSMike Gerdts
282bc36eafdSMike Gerdts /* Always clear the line buffer before we read a new line */
283bc36eafdSMike Gerdts
284bc36eafdSMike Gerdts memset (Buffer, 0, BufferLength);
285bc36eafdSMike Gerdts
286bc36eafdSMike Gerdts /*
287bc36eafdSMike Gerdts * This loop gets one character at a time (except for esc sequences)
288bc36eafdSMike Gerdts * until a newline or error is detected.
289bc36eafdSMike Gerdts *
290bc36eafdSMike Gerdts * Note: Don't attempt to write terminal control ESC sequences, even
291bc36eafdSMike Gerdts * though it makes certain things more difficult.
292bc36eafdSMike Gerdts */
293bc36eafdSMike Gerdts while (1)
294bc36eafdSMike Gerdts {
295bc36eafdSMike Gerdts if (EndOfLine >= (BufferLength - 1))
296bc36eafdSMike Gerdts {
297bc36eafdSMike Gerdts return (AE_BUFFER_OVERFLOW);
298bc36eafdSMike Gerdts }
299bc36eafdSMike Gerdts
300bc36eafdSMike Gerdts InputChar = getchar ();
301bc36eafdSMike Gerdts switch (InputChar)
302bc36eafdSMike Gerdts {
303bc36eafdSMike Gerdts default: /* This is the normal character case */
304bc36eafdSMike Gerdts
305bc36eafdSMike Gerdts /* Echo the character (at EOL) and copy it to the line buffer */
306bc36eafdSMike Gerdts
307bc36eafdSMike Gerdts if (EndOfLine == CursorPosition)
308bc36eafdSMike Gerdts {
309bc36eafdSMike Gerdts putchar (InputChar);
310bc36eafdSMike Gerdts Buffer[EndOfLine] = (char) InputChar;
311bc36eafdSMike Gerdts
312bc36eafdSMike Gerdts EndOfLine++;
313bc36eafdSMike Gerdts CursorPosition++;
314bc36eafdSMike Gerdts Buffer[EndOfLine] = 0;
315bc36eafdSMike Gerdts continue;
316bc36eafdSMike Gerdts }
317bc36eafdSMike Gerdts
318bc36eafdSMike Gerdts /* Insert character into the middle of the buffer */
319bc36eafdSMike Gerdts
320bc36eafdSMike Gerdts memmove (&Buffer[CursorPosition + 1], &Buffer[CursorPosition],
321bc36eafdSMike Gerdts (EndOfLine - CursorPosition + 1));
322bc36eafdSMike Gerdts
323bc36eafdSMike Gerdts Buffer [CursorPosition] = (char) InputChar;
324bc36eafdSMike Gerdts Buffer [EndOfLine + 1] = 0;
325bc36eafdSMike Gerdts
326bc36eafdSMike Gerdts /* Display the new part of line starting at the new character */
327bc36eafdSMike Gerdts
328bc36eafdSMike Gerdts fprintf (stdout, "%s", &Buffer[CursorPosition]);
329bc36eafdSMike Gerdts
330bc36eafdSMike Gerdts /* Restore cursor */
331bc36eafdSMike Gerdts
332bc36eafdSMike Gerdts ACPI_BACKUP_CURSOR (i, EndOfLine - CursorPosition);
333bc36eafdSMike Gerdts CursorPosition++;
334bc36eafdSMike Gerdts EndOfLine++;
335bc36eafdSMike Gerdts continue;
336bc36eafdSMike Gerdts
337bc36eafdSMike Gerdts case _ASCII_DEL: /* Backspace key */
338bc36eafdSMike Gerdts
339bc36eafdSMike Gerdts if (!EndOfLine) /* Any characters on the command line? */
340bc36eafdSMike Gerdts {
341bc36eafdSMike Gerdts continue;
342bc36eafdSMike Gerdts }
343bc36eafdSMike Gerdts
344bc36eafdSMike Gerdts if (EndOfLine == CursorPosition) /* Erase the final character */
345bc36eafdSMike Gerdts {
346bc36eafdSMike Gerdts ACPI_CLEAR_CHAR ();
347bc36eafdSMike Gerdts EndOfLine--;
348bc36eafdSMike Gerdts CursorPosition--;
349bc36eafdSMike Gerdts continue;
350bc36eafdSMike Gerdts }
351bc36eafdSMike Gerdts
352bc36eafdSMike Gerdts if (!CursorPosition) /* Do not backup beyond start of line */
353bc36eafdSMike Gerdts {
354bc36eafdSMike Gerdts continue;
355bc36eafdSMike Gerdts }
356bc36eafdSMike Gerdts
357bc36eafdSMike Gerdts /* Remove the character from the line */
358bc36eafdSMike Gerdts
359bc36eafdSMike Gerdts memmove (&Buffer[CursorPosition - 1], &Buffer[CursorPosition],
360bc36eafdSMike Gerdts (EndOfLine - CursorPosition + 1));
361bc36eafdSMike Gerdts
362bc36eafdSMike Gerdts /* Display the new part of line starting at the new character */
363bc36eafdSMike Gerdts
364bc36eafdSMike Gerdts putchar (_ASCII_BACKSPACE);
365bc36eafdSMike Gerdts fprintf (stdout, "%s ", &Buffer[CursorPosition - 1]);
366bc36eafdSMike Gerdts
367bc36eafdSMike Gerdts /* Restore cursor */
368bc36eafdSMike Gerdts
369bc36eafdSMike Gerdts ACPI_BACKUP_CURSOR (i, EndOfLine - CursorPosition + 1);
370bc36eafdSMike Gerdts EndOfLine--;
371bc36eafdSMike Gerdts
372bc36eafdSMike Gerdts if (CursorPosition > 0)
373bc36eafdSMike Gerdts {
374bc36eafdSMike Gerdts CursorPosition--;
375bc36eafdSMike Gerdts }
376bc36eafdSMike Gerdts continue;
377bc36eafdSMike Gerdts
378bc36eafdSMike Gerdts case _ASCII_NEWLINE: /* Normal exit case at end of command line */
379bc36eafdSMike Gerdts case _ASCII_NUL:
380bc36eafdSMike Gerdts
381bc36eafdSMike Gerdts /* Return the number of bytes in the command line string */
382bc36eafdSMike Gerdts
383bc36eafdSMike Gerdts if (BytesRead)
384bc36eafdSMike Gerdts {
385bc36eafdSMike Gerdts *BytesRead = EndOfLine;
386bc36eafdSMike Gerdts }
387bc36eafdSMike Gerdts
388bc36eafdSMike Gerdts /* Echo, terminate string buffer, and exit */
389bc36eafdSMike Gerdts
390bc36eafdSMike Gerdts putchar (InputChar);
391bc36eafdSMike Gerdts Buffer[EndOfLine] = 0;
392bc36eafdSMike Gerdts return (AE_OK);
393bc36eafdSMike Gerdts
394bc36eafdSMike Gerdts case _ASCII_TAB:
395bc36eafdSMike Gerdts
396bc36eafdSMike Gerdts /* Ignore */
397bc36eafdSMike Gerdts
398bc36eafdSMike Gerdts continue;
399bc36eafdSMike Gerdts
400bc36eafdSMike Gerdts case EOF:
401bc36eafdSMike Gerdts
402bc36eafdSMike Gerdts return (AE_ERROR);
403bc36eafdSMike Gerdts
404bc36eafdSMike Gerdts case _ASCII_ESCAPE:
405bc36eafdSMike Gerdts
406bc36eafdSMike Gerdts /* Check for escape sequences of the form "ESC[x" */
407bc36eafdSMike Gerdts
408bc36eafdSMike Gerdts InputChar = getchar ();
409bc36eafdSMike Gerdts if (InputChar != _ASCII_LEFT_BRACKET)
410bc36eafdSMike Gerdts {
411bc36eafdSMike Gerdts continue; /* Ignore this ESC, does not have the '[' */
412bc36eafdSMike Gerdts }
413bc36eafdSMike Gerdts
414bc36eafdSMike Gerdts /* Get the code following the ESC [ */
415bc36eafdSMike Gerdts
416bc36eafdSMike Gerdts InputChar = getchar (); /* Backup one character */
417bc36eafdSMike Gerdts switch (InputChar)
418bc36eafdSMike Gerdts {
419bc36eafdSMike Gerdts case _ASCII_LEFT_ARROW:
420bc36eafdSMike Gerdts
421bc36eafdSMike Gerdts if (CursorPosition > 0)
422bc36eafdSMike Gerdts {
423bc36eafdSMike Gerdts putchar (_ASCII_BACKSPACE);
424bc36eafdSMike Gerdts CursorPosition--;
425bc36eafdSMike Gerdts }
426bc36eafdSMike Gerdts continue;
427bc36eafdSMike Gerdts
428bc36eafdSMike Gerdts case _ASCII_RIGHT_ARROW:
429bc36eafdSMike Gerdts /*
430bc36eafdSMike Gerdts * Move one character forward. Do this without sending
431bc36eafdSMike Gerdts * ESC sequence to the terminal for max portability.
432bc36eafdSMike Gerdts */
433bc36eafdSMike Gerdts if (CursorPosition < EndOfLine)
434bc36eafdSMike Gerdts {
435bc36eafdSMike Gerdts /* Backup to start of line and print the entire line */
436bc36eafdSMike Gerdts
437bc36eafdSMike Gerdts ACPI_BACKUP_CURSOR (i, CursorPosition);
438bc36eafdSMike Gerdts fprintf (stdout, "%s", Buffer);
439bc36eafdSMike Gerdts
440bc36eafdSMike Gerdts /* Backup to where the cursor should be */
441bc36eafdSMike Gerdts
442bc36eafdSMike Gerdts CursorPosition++;
443bc36eafdSMike Gerdts ACPI_BACKUP_CURSOR (i, EndOfLine - CursorPosition);
444bc36eafdSMike Gerdts }
445bc36eafdSMike Gerdts continue;
446bc36eafdSMike Gerdts
447bc36eafdSMike Gerdts case _ASCII_UP_ARROW:
448bc36eafdSMike Gerdts
449bc36eafdSMike Gerdts /* If no commands available or at start of history list, ignore */
450bc36eafdSMike Gerdts
451bc36eafdSMike Gerdts if (!CurrentCommandIndex)
452bc36eafdSMike Gerdts {
453bc36eafdSMike Gerdts continue;
454bc36eafdSMike Gerdts }
455bc36eafdSMike Gerdts
456bc36eafdSMike Gerdts /* Manage our up/down progress */
457bc36eafdSMike Gerdts
458bc36eafdSMike Gerdts if (CurrentCommandIndex > PreviousCommandIndex)
459bc36eafdSMike Gerdts {
460bc36eafdSMike Gerdts CurrentCommandIndex = PreviousCommandIndex;
461bc36eafdSMike Gerdts }
462bc36eafdSMike Gerdts
463bc36eafdSMike Gerdts /* Get the historical command from the debugger */
464bc36eafdSMike Gerdts
465bc36eafdSMike Gerdts NextCommand = AcpiDbGetHistoryByIndex (CurrentCommandIndex);
466bc36eafdSMike Gerdts if (!NextCommand)
467bc36eafdSMike Gerdts {
468bc36eafdSMike Gerdts return (AE_ERROR);
469bc36eafdSMike Gerdts }
470bc36eafdSMike Gerdts
471bc36eafdSMike Gerdts /* Make this the active command and echo it */
472bc36eafdSMike Gerdts
473bc36eafdSMike Gerdts AcpiAcClearLine (EndOfLine, CursorPosition);
474bc36eafdSMike Gerdts strcpy (Buffer, NextCommand);
475bc36eafdSMike Gerdts fprintf (stdout, "%s", Buffer);
476bc36eafdSMike Gerdts EndOfLine = CursorPosition = strlen (Buffer);
477bc36eafdSMike Gerdts
478bc36eafdSMike Gerdts PreviousCommandIndex = CurrentCommandIndex;
479bc36eafdSMike Gerdts CurrentCommandIndex--;
480bc36eafdSMike Gerdts continue;
481bc36eafdSMike Gerdts
482bc36eafdSMike Gerdts case _ASCII_DOWN_ARROW:
483bc36eafdSMike Gerdts
484bc36eafdSMike Gerdts if (!MaxCommandIndex) /* Any commands available? */
485bc36eafdSMike Gerdts {
486bc36eafdSMike Gerdts continue;
487bc36eafdSMike Gerdts }
488bc36eafdSMike Gerdts
489bc36eafdSMike Gerdts /* Manage our up/down progress */
490bc36eafdSMike Gerdts
491bc36eafdSMike Gerdts if (CurrentCommandIndex < PreviousCommandIndex)
492bc36eafdSMike Gerdts {
493bc36eafdSMike Gerdts CurrentCommandIndex = PreviousCommandIndex;
494bc36eafdSMike Gerdts }
495bc36eafdSMike Gerdts
496bc36eafdSMike Gerdts /* If we are the end of the history list, output a clear new line */
497bc36eafdSMike Gerdts
498bc36eafdSMike Gerdts if ((CurrentCommandIndex + 1) > MaxCommandIndex)
499bc36eafdSMike Gerdts {
500bc36eafdSMike Gerdts AcpiAcClearLine (EndOfLine, CursorPosition);
501bc36eafdSMike Gerdts EndOfLine = CursorPosition = 0;
502bc36eafdSMike Gerdts PreviousCommandIndex = CurrentCommandIndex;
503bc36eafdSMike Gerdts continue;
504bc36eafdSMike Gerdts }
505bc36eafdSMike Gerdts
506bc36eafdSMike Gerdts PreviousCommandIndex = CurrentCommandIndex;
507bc36eafdSMike Gerdts CurrentCommandIndex++;
508bc36eafdSMike Gerdts
509bc36eafdSMike Gerdts /* Get the historical command from the debugger */
510bc36eafdSMike Gerdts
511bc36eafdSMike Gerdts NextCommand = AcpiDbGetHistoryByIndex (CurrentCommandIndex);
512bc36eafdSMike Gerdts if (!NextCommand)
513bc36eafdSMike Gerdts {
514bc36eafdSMike Gerdts return (AE_ERROR);
515bc36eafdSMike Gerdts }
516bc36eafdSMike Gerdts
517bc36eafdSMike Gerdts /* Make this the active command and echo it */
518bc36eafdSMike Gerdts
519bc36eafdSMike Gerdts AcpiAcClearLine (EndOfLine, CursorPosition);
520bc36eafdSMike Gerdts strcpy (Buffer, NextCommand);
521bc36eafdSMike Gerdts fprintf (stdout, "%s", Buffer);
522bc36eafdSMike Gerdts EndOfLine = CursorPosition = strlen (Buffer);
523bc36eafdSMike Gerdts continue;
524bc36eafdSMike Gerdts
525bc36eafdSMike Gerdts case 0x31:
526bc36eafdSMike Gerdts case 0x32:
527bc36eafdSMike Gerdts case 0x33:
528bc36eafdSMike Gerdts case 0x34:
529bc36eafdSMike Gerdts case 0x35:
530bc36eafdSMike Gerdts case 0x36:
531bc36eafdSMike Gerdts /*
532bc36eafdSMike Gerdts * Ignore the various keys like insert/delete/home/end, etc.
533bc36eafdSMike Gerdts * But we must eat the final character of the ESC sequence.
534bc36eafdSMike Gerdts */
535bc36eafdSMike Gerdts InputChar = getchar ();
536bc36eafdSMike Gerdts continue;
537bc36eafdSMike Gerdts
538bc36eafdSMike Gerdts default:
539bc36eafdSMike Gerdts
540bc36eafdSMike Gerdts /* Ignore random escape sequences that we don't care about */
541bc36eafdSMike Gerdts
542bc36eafdSMike Gerdts continue;
543bc36eafdSMike Gerdts }
544bc36eafdSMike Gerdts continue;
545bc36eafdSMike Gerdts }
546bc36eafdSMike Gerdts }
547bc36eafdSMike Gerdts }
548