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1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * * Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * * Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in | |
15 | * the documentation and/or other materials provided with the | |
16 | * distribution. | |
17 | * * Neither the name of Intel Corporation nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | /* | |
35 | * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org> | |
36 | * All rights reserved. | |
37 | * Redistribution and use in source and binary forms, with or without | |
38 | * modification, are permitted provided that the following conditions are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in the | |
44 | * documentation and/or other materials provided with the distribution. | |
45 | * * Neither the name of the University of California, Berkeley nor the | |
46 | * names of its contributors may be used to endorse or promote products | |
47 | * derived from this software without specific prior written permission. | |
48 | * | |
49 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY | |
50 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
51 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
52 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY | |
53 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
54 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
55 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
56 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
57 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
58 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
59 | */ | |
60 | ||
61 | #include <stdlib.h> | |
62 | #include <stdint.h> | |
63 | #include <stdio.h> | |
64 | #include <string.h> | |
65 | #include <stdarg.h> | |
66 | #include <ctype.h> | |
67 | #include <termios.h> | |
68 | ||
69 | #include "cmdline_vt100.h" | |
70 | ||
71 | const char *cmdline_vt100_commands[] = { | |
72 | vt100_up_arr, | |
73 | vt100_down_arr, | |
74 | vt100_right_arr, | |
75 | vt100_left_arr, | |
76 | "\177", | |
77 | "\n", | |
78 | "\001", | |
79 | "\005", | |
80 | "\013", | |
81 | "\031", | |
82 | "\003", | |
83 | "\006", | |
84 | "\002", | |
85 | vt100_suppr, | |
86 | vt100_tab, | |
87 | "\004", | |
88 | "\014", | |
89 | "\r", | |
90 | "\033\177", | |
91 | vt100_word_left, | |
92 | vt100_word_right, | |
93 | "?", | |
94 | "\027", | |
95 | "\020", | |
96 | "\016", | |
97 | "\033\144", | |
98 | }; | |
99 | ||
100 | void | |
101 | vt100_init(struct cmdline_vt100 *vt) | |
102 | { | |
103 | if (!vt) | |
104 | return; | |
105 | vt->state = CMDLINE_VT100_INIT; | |
106 | } | |
107 | ||
108 | ||
109 | static int | |
110 | match_command(char *buf, unsigned int size) | |
111 | { | |
112 | const char *cmd; | |
113 | size_t cmdlen; | |
114 | unsigned int i = 0; | |
115 | ||
116 | for (i=0 ; i<sizeof(cmdline_vt100_commands)/sizeof(const char *) ; i++) { | |
117 | cmd = *(cmdline_vt100_commands + i); | |
118 | ||
119 | cmdlen = strnlen(cmd, CMDLINE_VT100_BUF_SIZE); | |
120 | if (size == cmdlen && | |
121 | !strncmp(buf, cmd, cmdlen)) { | |
122 | return i; | |
123 | } | |
124 | } | |
125 | ||
126 | return -1; | |
127 | } | |
128 | ||
129 | int | |
130 | vt100_parser(struct cmdline_vt100 *vt, char ch) | |
131 | { | |
132 | unsigned int size; | |
133 | uint8_t c = (uint8_t) ch; | |
134 | ||
135 | if (!vt) | |
136 | return -1; | |
137 | ||
138 | if (vt->bufpos >= CMDLINE_VT100_BUF_SIZE) { | |
139 | vt->state = CMDLINE_VT100_INIT; | |
140 | vt->bufpos = 0; | |
141 | } | |
142 | ||
143 | vt->buf[vt->bufpos++] = c; | |
144 | size = vt->bufpos; | |
145 | ||
146 | switch (vt->state) { | |
147 | case CMDLINE_VT100_INIT: | |
148 | if (c == 033) { | |
149 | vt->state = CMDLINE_VT100_ESCAPE; | |
150 | } | |
151 | else { | |
152 | vt->bufpos = 0; | |
153 | goto match_command; | |
154 | } | |
155 | break; | |
156 | ||
157 | case CMDLINE_VT100_ESCAPE: | |
158 | if (c == 0133) { | |
159 | vt->state = CMDLINE_VT100_ESCAPE_CSI; | |
160 | } | |
161 | else if (c >= 060 && c <= 0177) { /* XXX 0177 ? */ | |
162 | vt->bufpos = 0; | |
163 | vt->state = CMDLINE_VT100_INIT; | |
164 | goto match_command; | |
165 | } | |
166 | break; | |
167 | ||
168 | case CMDLINE_VT100_ESCAPE_CSI: | |
169 | if (c >= 0100 && c <= 0176) { | |
170 | vt->bufpos = 0; | |
171 | vt->state = CMDLINE_VT100_INIT; | |
172 | goto match_command; | |
173 | } | |
174 | break; | |
175 | ||
176 | default: | |
177 | vt->bufpos = 0; | |
178 | break; | |
179 | } | |
180 | ||
181 | return -2; | |
182 | ||
183 | match_command: | |
184 | return match_command(vt->buf, size); | |
185 | } |