1 | /* |
---|
2 | * |
---|
3 | * Handle keys for the shell. |
---|
4 | * |
---|
5 | * Author: |
---|
6 | * |
---|
7 | * Chris Johns (chrisj@rtems.org) |
---|
8 | * |
---|
9 | * The license and distribution terms for this file may be |
---|
10 | * found in the file LICENSE in this distribution or at |
---|
11 | * http://www.rtems.com/license/LICENSE. |
---|
12 | * |
---|
13 | * $Id$ |
---|
14 | */ |
---|
15 | |
---|
16 | #ifdef HAVE_CONFIG_H |
---|
17 | #include "config.h" |
---|
18 | #endif |
---|
19 | |
---|
20 | #include <stdio.h> |
---|
21 | #include <time.h> |
---|
22 | |
---|
23 | #include <rtems.h> |
---|
24 | #include <rtems/error.h> |
---|
25 | #include <rtems/system.h> |
---|
26 | #include <rtems/shell.h> |
---|
27 | #include <rtems/shellconfig.h> |
---|
28 | #include "internal.h" |
---|
29 | |
---|
30 | /* |
---|
31 | * Taken from the monitor code. |
---|
32 | */ |
---|
33 | |
---|
34 | /* |
---|
35 | * Translation tables. Not sure if this is the best way to |
---|
36 | * handle this, how-ever I wish to avoid the overhead of |
---|
37 | * including a more complete and standard environment such |
---|
38 | * as ncurses. |
---|
39 | */ |
---|
40 | |
---|
41 | struct translation_table |
---|
42 | { |
---|
43 | char expecting; |
---|
44 | struct translation_table *branch; |
---|
45 | unsigned int key; |
---|
46 | }; |
---|
47 | |
---|
48 | static struct translation_table trans_one[] = |
---|
49 | { |
---|
50 | { '\x7e', 0, RTEMS_SHELL_KEYS_HOME }, |
---|
51 | { 0, 0, 0 } |
---|
52 | }; |
---|
53 | |
---|
54 | static struct translation_table trans_two[] = |
---|
55 | { |
---|
56 | { '~', 0, RTEMS_SHELL_KEYS_INS }, |
---|
57 | { 0, 0, 0 } |
---|
58 | }; |
---|
59 | |
---|
60 | static struct translation_table trans_three[] = |
---|
61 | { |
---|
62 | { '~', 0, RTEMS_SHELL_KEYS_DEL }, |
---|
63 | { 0, 0, 0 } |
---|
64 | }; |
---|
65 | |
---|
66 | static struct translation_table trans_tab_csi[] = |
---|
67 | { |
---|
68 | { '1', trans_one, 0 }, |
---|
69 | { '2', trans_two, 0 }, |
---|
70 | { '3', trans_three, 0 }, |
---|
71 | { 'A', 0, RTEMS_SHELL_KEYS_UARROW }, |
---|
72 | { 'B', 0, RTEMS_SHELL_KEYS_DARROW }, |
---|
73 | { 'D', 0, RTEMS_SHELL_KEYS_LARROW }, |
---|
74 | { 'C', 0, RTEMS_SHELL_KEYS_RARROW }, |
---|
75 | { 'F', 0, RTEMS_SHELL_KEYS_END }, |
---|
76 | { 'H', 0, RTEMS_SHELL_KEYS_HOME }, |
---|
77 | { 0, 0, 0 } |
---|
78 | }; |
---|
79 | |
---|
80 | static struct translation_table trans_tab_O[] = |
---|
81 | { |
---|
82 | { '1', 0, RTEMS_SHELL_KEYS_F1 }, |
---|
83 | { '2', 0, RTEMS_SHELL_KEYS_F2 }, |
---|
84 | { '3', 0, RTEMS_SHELL_KEYS_F3 }, |
---|
85 | { '4', 0, RTEMS_SHELL_KEYS_F4 }, |
---|
86 | { '5', 0, RTEMS_SHELL_KEYS_F5 }, |
---|
87 | { '6', 0, RTEMS_SHELL_KEYS_F6 }, |
---|
88 | { '7', 0, RTEMS_SHELL_KEYS_F7 }, |
---|
89 | { '8', 0, RTEMS_SHELL_KEYS_F8 }, |
---|
90 | { '9', 0, RTEMS_SHELL_KEYS_F9 }, |
---|
91 | { ':', 0, RTEMS_SHELL_KEYS_F10 }, |
---|
92 | { 'F', 0, RTEMS_SHELL_KEYS_END }, |
---|
93 | { 'P', 0, RTEMS_SHELL_KEYS_F1 }, |
---|
94 | { 'Q', 0, RTEMS_SHELL_KEYS_F2 }, |
---|
95 | { 'R', 0, RTEMS_SHELL_KEYS_F3 }, |
---|
96 | { 'S', 0, RTEMS_SHELL_KEYS_F4 }, |
---|
97 | { 'T', 0, RTEMS_SHELL_KEYS_F5 }, |
---|
98 | { 'U', 0, RTEMS_SHELL_KEYS_F6 }, |
---|
99 | { 'V', 0, RTEMS_SHELL_KEYS_F7 }, |
---|
100 | { 'W', 0, RTEMS_SHELL_KEYS_F8 }, |
---|
101 | { 'X', 0, RTEMS_SHELL_KEYS_F9 }, |
---|
102 | { 'Y', 0, RTEMS_SHELL_KEYS_F10 }, |
---|
103 | { 0, 0, 0 } |
---|
104 | }; |
---|
105 | |
---|
106 | static struct translation_table trans_tab[] = |
---|
107 | { |
---|
108 | { '[', trans_tab_csi, 0 }, /* CSI command sequences */ |
---|
109 | { 'O', trans_tab_O, 0 }, /* O are the fuction keys */ |
---|
110 | { 0, 0, 0 } |
---|
111 | }; |
---|
112 | |
---|
113 | /* |
---|
114 | * Perform a basic tranlation for some ANSI/VT100 key codes. |
---|
115 | * This code could do with a timeout on the ESC as it is |
---|
116 | * now lost from the input stream. It is not* used by the |
---|
117 | * line editor below so considiered not worth the effort. |
---|
118 | */ |
---|
119 | |
---|
120 | unsigned int |
---|
121 | rtems_shell_getchar (FILE *in) |
---|
122 | { |
---|
123 | struct translation_table *translation = 0; |
---|
124 | for (;;) |
---|
125 | { |
---|
126 | int c = fgetc (in); |
---|
127 | if (c == EOF) |
---|
128 | return EOF; |
---|
129 | if (c == 27) |
---|
130 | translation = trans_tab; |
---|
131 | else |
---|
132 | { |
---|
133 | /* |
---|
134 | * If no translation happing just pass through |
---|
135 | * and return the key. |
---|
136 | */ |
---|
137 | if (translation) |
---|
138 | { |
---|
139 | /* |
---|
140 | * Scan the current table for the key, and if found |
---|
141 | * see if this key is a fork. If so follow it and |
---|
142 | * wait else return the extended key. |
---|
143 | */ |
---|
144 | int index = 0; |
---|
145 | int branched = 0; |
---|
146 | while ((translation[index].expecting != '\0') || |
---|
147 | (translation[index].key != '\0')) |
---|
148 | { |
---|
149 | if (translation[index].expecting == c) |
---|
150 | { |
---|
151 | /* |
---|
152 | * A branch is take if more keys are to come. |
---|
153 | */ |
---|
154 | if (translation[index].branch == 0) |
---|
155 | return RTEMS_SHELL_KEYS_EXTENDED | translation[index].key; |
---|
156 | else |
---|
157 | { |
---|
158 | translation = translation[index].branch; |
---|
159 | branched = 1; |
---|
160 | break; |
---|
161 | } |
---|
162 | } |
---|
163 | index++; |
---|
164 | } |
---|
165 | /* |
---|
166 | * Who knows what these keys are, just drop them. |
---|
167 | */ |
---|
168 | if (!branched) |
---|
169 | translation = 0; |
---|
170 | } |
---|
171 | else |
---|
172 | return c; |
---|
173 | } |
---|
174 | } |
---|
175 | } |
---|
176 | |
---|