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1/* speakup_keyhelp.c
2 * help module for speakup
3 *
4 *written by David Borowski.
5 *
6 * Copyright (C) 2003 David Borowski.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/keyboard.h>
24#include "spk_priv.h"
25#include "speakup.h"
26
27#define MAXFUNCS 130
28#define MAXKEYS 256
29static const int num_key_names = MSG_KEYNAMES_END - MSG_KEYNAMES_START + 1;
30static u_short key_offsets[MAXFUNCS], key_data[MAXKEYS];
31static u_short masks[] = { 32, 16, 8, 4, 2, 1 };
32
33static short letter_offsets[26] = {
34 -1, -1, -1, -1, -1, -1, -1, -1,
35 -1, -1, -1, -1, -1, -1, -1, -1,
36 -1, -1, -1, -1, -1, -1, -1, -1,
37 -1, -1 };
38
39static u_char funcvals[] = {
40 ATTRIB_BLEEP_DEC, ATTRIB_BLEEP_INC, BLEEPS_DEC, BLEEPS_INC,
41 SAY_FIRST_CHAR, SAY_LAST_CHAR, SAY_CHAR, SAY_CHAR_NUM,
42 SAY_NEXT_CHAR, SAY_PHONETIC_CHAR, SAY_PREV_CHAR, SPEAKUP_PARKED,
43 SPEAKUP_CUT, EDIT_DELIM, EDIT_EXNUM, EDIT_MOST,
44 EDIT_REPEAT, EDIT_SOME, SPEAKUP_GOTO, BOTTOM_EDGE,
45 LEFT_EDGE, RIGHT_EDGE, TOP_EDGE, SPEAKUP_HELP,
46 SAY_LINE, SAY_NEXT_LINE, SAY_PREV_LINE, SAY_LINE_INDENT,
47 SPEAKUP_PASTE, PITCH_DEC, PITCH_INC, PUNCT_DEC,
48 PUNCT_INC, PUNC_LEVEL_DEC, PUNC_LEVEL_INC, SPEAKUP_QUIET,
49 RATE_DEC, RATE_INC, READING_PUNC_DEC, READING_PUNC_INC,
50 SAY_ATTRIBUTES, SAY_FROM_LEFT, SAY_FROM_TOP, SAY_POSITION,
51 SAY_SCREEN, SAY_TO_BOTTOM, SAY_TO_RIGHT, SPK_KEY,
52 SPK_LOCK, SPEAKUP_OFF, SPEECH_KILL, SPELL_DELAY_DEC,
53 SPELL_DELAY_INC, SPELL_WORD, SPELL_PHONETIC, TONE_DEC,
54 TONE_INC, VOICE_DEC, VOICE_INC, VOL_DEC,
55 VOL_INC, CLEAR_WIN, SAY_WIN, SET_WIN,
56 ENABLE_WIN, SAY_WORD, SAY_NEXT_WORD, SAY_PREV_WORD, 0
57};
58
59static u_char *state_tbl;
60static int cur_item, nstates;
61
62static void build_key_data(void)
63{
64 u_char *kp, counters[MAXFUNCS], ch, ch1;
65 u_short *p_key = key_data, key;
66 int i, offset = 1;
67 nstates = (int)(state_tbl[-1]);
68 memset(counters, 0, sizeof(counters));
69 memset(key_offsets, 0, sizeof(key_offsets));
70 kp = state_tbl + nstates + 1;
71 while (*kp++) {
72 /* count occurrences of each function */
73 for (i = 0; i < nstates; i++, kp++) {
74 if (!*kp)
75 continue;
76 if ((state_tbl[i]&16) != 0 && *kp == SPK_KEY)
77 continue;
78 counters[*kp]++;
79 }
80 }
81 for (i = 0; i < MAXFUNCS; i++) {
82 if (counters[i] == 0)
83 continue;
84 key_offsets[i] = offset;
85 offset += (counters[i]+1);
86 if (offset >= MAXKEYS)
87 break;
88 }
89/* leave counters set so high keycodes come first.
90 * this is done so num pad and other extended keys maps are spoken before
91 * the alpha with speakup type mapping.
92 */
93 kp = state_tbl + nstates + 1;
94 while ((ch = *kp++)) {
95 for (i = 0; i < nstates; i++) {
96 ch1 = *kp++;
97 if (!ch1)
98 continue;
99 if ((state_tbl[i]&16) != 0 && ch1 == SPK_KEY)
100 continue;
101 key = (state_tbl[i] << 8) + ch;
102 counters[ch1]--;
103 offset = key_offsets[ch1];
104 if (!offset)
105 continue;
106 p_key = key_data + offset + counters[ch1];
107 *p_key = key;
108 }
109 }
110}
111
112static void say_key(int key)
113{
114 int i, state = key >> 8;
115 key &= 0xff;
116 for (i = 0; i < 6; i++) {
117 if (state & masks[i])
118 synth_printf(" %s", msg_get(MSG_STATES_START + i));
119 }
120 if ((key > 0) && (key <= num_key_names))
121 synth_printf(" %s\n", msg_get(MSG_KEYNAMES_START + (key - 1)));
122}
123
124static int help_init(void)
125{
126 char start = SPACE;
127 int i;
128 int num_funcs = MSG_FUNCNAMES_END - MSG_FUNCNAMES_START + 1;
129state_tbl = our_keys[0]+SHIFT_TBL_SIZE+2;
130 for (i = 0; i < num_funcs; i++) {
131 char *cur_funcname = msg_get(MSG_FUNCNAMES_START + i);
132 if (start == *cur_funcname)
133 continue;
134 start = *cur_funcname;
135 letter_offsets[(start&31)-1] = i;
136 }
137 return 0;
138}
139
140int handle_help(struct vc_data *vc, u_char type, u_char ch, u_short key)
141{
142 int i, n;
143 char *name;
144 u_char func, *kp;
145 u_short *p_keys, val;
146 if (letter_offsets[0] == -1)
147 help_init();
148 if (type == KT_LATIN) {
149 if (ch == SPACE) {
150 special_handler = NULL;
151 synth_printf("%s\n", msg_get(MSG_LEAVING_HELP));
152 return 1;
153 }
154 ch |= 32; /* lower case */
155 if (ch < 'a' || ch > 'z')
156 return -1;
157 if (letter_offsets[ch-'a'] == -1) {
158 synth_printf(msg_get(MSG_NO_COMMAND), ch);
159 synth_printf("\n");
160 return 1;
161 }
162 cur_item = letter_offsets[ch-'a'];
163 } else if (type == KT_CUR) {
164 if (ch == 0
165 && (MSG_FUNCNAMES_START + cur_item + 1) <=
166 MSG_FUNCNAMES_END)
167 cur_item++;
168 else if (ch == 3 && cur_item > 0)
169 cur_item--;
170 else
171 return -1;
172 } else if (type == KT_SPKUP && ch == SPEAKUP_HELP && !special_handler) {
173 special_handler = handle_help;
174 synth_printf("%s\n", msg_get(MSG_HELP_INFO));
175 build_key_data(); /* rebuild each time in case new mapping */
176 return 1;
177 } else {
178 name = NULL;
179 if ((type != KT_SPKUP) && (key > 0) && (key <= num_key_names)) {
180 synth_printf("%s\n",
181 msg_get(MSG_KEYNAMES_START + key-1));
182 return 1;
183 }
184 for (i = 0; funcvals[i] != 0 && !name; i++) {
185 if (ch == funcvals[i])
186 name = msg_get(MSG_FUNCNAMES_START + i);
187 }
188 if (!name)
189 return -1;
190 kp = our_keys[key]+1;
191 for (i = 0; i < nstates; i++) {
192 if (ch == kp[i])
193 break;
194 }
195 key += (state_tbl[i] << 8);
196 say_key(key);
197 synth_printf(msg_get(MSG_KEYDESC), name);
198 synth_printf("\n");
199 return 1;
200 }
201 name = msg_get(MSG_FUNCNAMES_START + cur_item);
202 func = funcvals[cur_item];
203 synth_printf("%s", name);
204 if (key_offsets[func] == 0) {
205 synth_printf(" %s\n", msg_get(MSG_IS_UNASSIGNED));
206 return 1;
207 }
208 p_keys = key_data + key_offsets[func];
209 for (n = 0; p_keys[n]; n++) {
210 val = p_keys[n];
211 if (n > 0)
212 synth_printf("%s ", msg_get(MSG_DISJUNCTION));
213 say_key(val);
214 }
215 return 1;
216}
1// SPDX-License-Identifier: GPL-2.0+
2/* speakup_keyhelp.c
3 * help module for speakup
4 *
5 *written by David Borowski.
6 *
7 * Copyright (C) 2003 David Borowski.
8 */
9
10#include <linux/keyboard.h>
11#include "spk_priv.h"
12#include "speakup.h"
13
14#define MAXFUNCS 130
15#define MAXKEYS 256
16static const int num_key_names = MSG_KEYNAMES_END - MSG_KEYNAMES_START + 1;
17static u_short key_offsets[MAXFUNCS], key_data[MAXKEYS];
18static u_short masks[] = { 32, 16, 8, 4, 2, 1 };
19
20static short letter_offsets[26] = {
21 -1, -1, -1, -1, -1, -1, -1, -1,
22 -1, -1, -1, -1, -1, -1, -1, -1,
23 -1, -1, -1, -1, -1, -1, -1, -1,
24 -1, -1 };
25
26static u_char funcvals[] = {
27 ATTRIB_BLEEP_DEC, ATTRIB_BLEEP_INC, BLEEPS_DEC, BLEEPS_INC,
28 SAY_FIRST_CHAR, SAY_LAST_CHAR, SAY_CHAR, SAY_CHAR_NUM,
29 SAY_NEXT_CHAR, SAY_PHONETIC_CHAR, SAY_PREV_CHAR, SPEAKUP_PARKED,
30 SPEAKUP_CUT, EDIT_DELIM, EDIT_EXNUM, EDIT_MOST,
31 EDIT_REPEAT, EDIT_SOME, SPEAKUP_GOTO, BOTTOM_EDGE,
32 LEFT_EDGE, RIGHT_EDGE, TOP_EDGE, SPEAKUP_HELP,
33 SAY_LINE, SAY_NEXT_LINE, SAY_PREV_LINE, SAY_LINE_INDENT,
34 SPEAKUP_PASTE, PITCH_DEC, PITCH_INC, PUNCT_DEC,
35 PUNCT_INC, PUNC_LEVEL_DEC, PUNC_LEVEL_INC, SPEAKUP_QUIET,
36 RATE_DEC, RATE_INC, READING_PUNC_DEC, READING_PUNC_INC,
37 SAY_ATTRIBUTES, SAY_FROM_LEFT, SAY_FROM_TOP, SAY_POSITION,
38 SAY_SCREEN, SAY_TO_BOTTOM, SAY_TO_RIGHT, SPK_KEY,
39 SPK_LOCK, SPEAKUP_OFF, SPEECH_KILL, SPELL_DELAY_DEC,
40 SPELL_DELAY_INC, SPELL_WORD, SPELL_PHONETIC, TONE_DEC,
41 TONE_INC, VOICE_DEC, VOICE_INC, VOL_DEC,
42 VOL_INC, CLEAR_WIN, SAY_WIN, SET_WIN,
43 ENABLE_WIN, SAY_WORD, SAY_NEXT_WORD, SAY_PREV_WORD, 0
44};
45
46static u_char *state_tbl;
47static int cur_item, nstates;
48
49static void build_key_data(void)
50{
51 u_char *kp, counters[MAXFUNCS], ch, ch1;
52 u_short *p_key = key_data, key;
53 int i, offset = 1;
54
55 nstates = (int)(state_tbl[-1]);
56 memset(counters, 0, sizeof(counters));
57 memset(key_offsets, 0, sizeof(key_offsets));
58 kp = state_tbl + nstates + 1;
59 while (*kp++) {
60 /* count occurrences of each function */
61 for (i = 0; i < nstates; i++, kp++) {
62 if (!*kp)
63 continue;
64 if ((state_tbl[i] & 16) != 0 && *kp == SPK_KEY)
65 continue;
66 counters[*kp]++;
67 }
68 }
69 for (i = 0; i < MAXFUNCS; i++) {
70 if (counters[i] == 0)
71 continue;
72 key_offsets[i] = offset;
73 offset += (counters[i] + 1);
74 if (offset >= MAXKEYS)
75 break;
76 }
77/* leave counters set so high keycodes come first.
78 * this is done so num pad and other extended keys maps are spoken before
79 * the alpha with speakup type mapping.
80 */
81 kp = state_tbl + nstates + 1;
82 while ((ch = *kp++)) {
83 for (i = 0; i < nstates; i++) {
84 ch1 = *kp++;
85 if (!ch1)
86 continue;
87 if ((state_tbl[i] & 16) != 0 && ch1 == SPK_KEY)
88 continue;
89 key = (state_tbl[i] << 8) + ch;
90 counters[ch1]--;
91 offset = key_offsets[ch1];
92 if (!offset)
93 continue;
94 p_key = key_data + offset + counters[ch1];
95 *p_key = key;
96 }
97 }
98}
99
100static void say_key(int key)
101{
102 int i, state = key >> 8;
103
104 key &= 0xff;
105 for (i = 0; i < 6; i++) {
106 if (state & masks[i])
107 synth_printf(" %s", spk_msg_get(MSG_STATES_START + i));
108 }
109 if ((key > 0) && (key <= num_key_names))
110 synth_printf(" %s\n",
111 spk_msg_get(MSG_KEYNAMES_START + (key - 1)));
112}
113
114static int help_init(void)
115{
116 char start = SPACE;
117 int i;
118 int num_funcs = MSG_FUNCNAMES_END - MSG_FUNCNAMES_START + 1;
119
120 state_tbl = spk_our_keys[0] + SHIFT_TBL_SIZE + 2;
121 for (i = 0; i < num_funcs; i++) {
122 char *cur_funcname = spk_msg_get(MSG_FUNCNAMES_START + i);
123
124 if (start == *cur_funcname)
125 continue;
126 start = *cur_funcname;
127 letter_offsets[(start & 31) - 1] = i;
128 }
129 return 0;
130}
131
132int spk_handle_help(struct vc_data *vc, u_char type, u_char ch, u_short key)
133{
134 int i, n;
135 char *name;
136 u_char func, *kp;
137 u_short *p_keys, val;
138
139 if (letter_offsets[0] == -1)
140 help_init();
141 if (type == KT_LATIN) {
142 if (ch == SPACE) {
143 spk_special_handler = NULL;
144 synth_printf("%s\n", spk_msg_get(MSG_LEAVING_HELP));
145 return 1;
146 }
147 ch |= 32; /* lower case */
148 if (ch < 'a' || ch > 'z')
149 return -1;
150 if (letter_offsets[ch - 'a'] == -1) {
151 synth_printf(spk_msg_get(MSG_NO_COMMAND), ch);
152 synth_printf("\n");
153 return 1;
154 }
155 cur_item = letter_offsets[ch - 'a'];
156 } else if (type == KT_CUR) {
157 if (ch == 0 &&
158 (MSG_FUNCNAMES_START + cur_item + 1) <= MSG_FUNCNAMES_END)
159 cur_item++;
160 else if (ch == 3 && cur_item > 0)
161 cur_item--;
162 else
163 return -1;
164 } else if (type == KT_SPKUP && ch == SPEAKUP_HELP &&
165 !spk_special_handler) {
166 spk_special_handler = spk_handle_help;
167 synth_printf("%s\n", spk_msg_get(MSG_HELP_INFO));
168 build_key_data(); /* rebuild each time in case new mapping */
169 return 1;
170 } else {
171 name = NULL;
172 if ((type != KT_SPKUP) && (key > 0) && (key <= num_key_names)) {
173 synth_printf("%s\n",
174 spk_msg_get(MSG_KEYNAMES_START + key - 1));
175 return 1;
176 }
177 for (i = 0; funcvals[i] != 0 && !name; i++) {
178 if (ch == funcvals[i])
179 name = spk_msg_get(MSG_FUNCNAMES_START + i);
180 }
181 if (!name)
182 return -1;
183 kp = spk_our_keys[key] + 1;
184 for (i = 0; i < nstates; i++) {
185 if (ch == kp[i])
186 break;
187 }
188 key += (state_tbl[i] << 8);
189 say_key(key);
190 synth_printf(spk_msg_get(MSG_KEYDESC), name);
191 synth_printf("\n");
192 return 1;
193 }
194 name = spk_msg_get(MSG_FUNCNAMES_START + cur_item);
195 func = funcvals[cur_item];
196 synth_printf("%s", name);
197 if (key_offsets[func] == 0) {
198 synth_printf(" %s\n", spk_msg_get(MSG_IS_UNASSIGNED));
199 return 1;
200 }
201 p_keys = key_data + key_offsets[func];
202 for (n = 0; p_keys[n]; n++) {
203 val = p_keys[n];
204 if (n > 0)
205 synth_printf("%s ", spk_msg_get(MSG_DISJUNCTION));
206 say_key(val);
207 }
208 return 1;
209}