drivers/staging/speakup/varhandlers.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/ctype.h>
   3 #include "spk_types.h"
   4 #include "spk_priv.h"
   5 #include "speakup.h"
   6
   7 static struct st_var_header var_headers[] = {
   8         { "version", VERSION, VAR_PROC, NULL, NULL },
   9         { "synth_name", SYNTH, VAR_PROC, NULL, NULL },
  10         { "keymap", KEYMAP, VAR_PROC, NULL, NULL },
  11         { "silent", SILENT, VAR_PROC, NULL, NULL },
  12         { "punc_some", PUNC_SOME, VAR_PROC, NULL, NULL },
  13         { "punc_most", PUNC_MOST, VAR_PROC, NULL, NULL },
  14         { "punc_all", PUNC_ALL, VAR_PROC, NULL, NULL },
  15         { "delimiters", DELIM, VAR_PROC, NULL, NULL },
  16         { "repeats", REPEATS, VAR_PROC, NULL, NULL },
  17         { "ex_num", EXNUMBER, VAR_PROC, NULL, NULL },
  18         { "characters", CHARS, VAR_PROC, NULL, NULL },
  19         { "synth_direct", SYNTH_DIRECT, VAR_PROC, NULL, NULL },
  20         { "caps_start", CAPS_START, VAR_STRING, spk_str_caps_start, NULL },
  21         { "caps_stop", CAPS_STOP, VAR_STRING, spk_str_caps_stop, NULL },
  22         { "delay_time", DELAY, VAR_TIME, NULL, NULL },
  23         { "trigger_time", TRIGGER, VAR_TIME, NULL, NULL },
  24         { "jiffy_delta", JIFFY, VAR_TIME, NULL, NULL },
  25         { "full_time", FULL, VAR_TIME, NULL, NULL },
  26         { "spell_delay", SPELL_DELAY, VAR_NUM, &spk_spell_delay, NULL },
  27         { "bleeps", BLEEPS, VAR_NUM, &spk_bleeps, NULL },
  28         { "attrib_bleep", ATTRIB_BLEEP, VAR_NUM, &spk_attrib_bleep, NULL },
  29         { "bleep_time", BLEEP_TIME, VAR_TIME, &spk_bleep_time, NULL },
  30         { "cursor_time", CURSOR_TIME, VAR_TIME, NULL, NULL },
  31         { "punc_level", PUNC_LEVEL, VAR_NUM, &spk_punc_level, NULL },
  32         { "reading_punc", READING_PUNC, VAR_NUM, &spk_reading_punc, NULL },
  33         { "say_control", SAY_CONTROL, VAR_NUM, &spk_say_ctrl, NULL },
  34         { "say_word_ctl", SAY_WORD_CTL, VAR_NUM, &spk_say_word_ctl, NULL },
  35         { "no_interrupt", NO_INTERRUPT, VAR_NUM, &spk_no_intr, NULL },
  36         { "key_echo", KEY_ECHO, VAR_NUM, &spk_key_echo, NULL },
  37         { "bell_pos", BELL_POS, VAR_NUM, &spk_bell_pos, NULL },
  38         { "rate", RATE, VAR_NUM, NULL, NULL },
  39         { "pitch", PITCH, VAR_NUM, NULL, NULL },
  40         { "vol", VOL, VAR_NUM, NULL, NULL },
  41         { "tone", TONE, VAR_NUM, NULL, NULL },
  42         { "punct", PUNCT, VAR_NUM, NULL, NULL   },
  43         { "voice", VOICE, VAR_NUM, NULL, NULL },
  44         { "freq", FREQUENCY, VAR_NUM, NULL, NULL },
  45         { "lang", LANG, VAR_NUM, NULL, NULL },
  46         { "chartab", CHARTAB, VAR_PROC, NULL, NULL },
  47         { "direct", DIRECT, VAR_NUM, NULL, NULL },
  48 };
  49
  50 static struct st_var_header *var_ptrs[MAXVARS] = { NULL, NULL, NULL };
  51
  52 static struct punc_var_t punc_vars[] = {
  53         { PUNC_SOME, 1 },
  54         { PUNC_MOST, 2 },
  55         { PUNC_ALL, 3 },
  56         { DELIM, 4 },
  57         { REPEATS, 5 },
  58         { EXNUMBER, 6 },
  59         { -1, -1 },
  60 };
  61
  62 int spk_chartab_get_value(char *keyword)
  63 {
  64         int value = 0;
  65
  66         if (!strcmp(keyword, "ALPHA"))
  67                 value = ALPHA;
  68         else if (!strcmp(keyword, "B_CTL"))
  69                 value = B_CTL;
  70         else if (!strcmp(keyword, "WDLM"))
  71                 value = WDLM;
  72         else if (!strcmp(keyword, "A_PUNC"))
  73                 value = A_PUNC;
  74         else if (!strcmp(keyword, "PUNC"))
  75                 value = PUNC;
  76         else if (!strcmp(keyword, "NUM"))
  77                 value = NUM;
  78         else if (!strcmp(keyword, "A_CAP"))
  79                 value = A_CAP;
  80         else if (!strcmp(keyword, "B_CAPSYM"))
  81                 value = B_CAPSYM;
  82         else if (!strcmp(keyword, "B_SYM"))
  83                 value = B_SYM;
  84         return value;
  85 }
  86
  87 void speakup_register_var(struct var_t *var)
  88 {
  89         static char nothing[2] = "\0";
  90         int i;
  91         struct st_var_header *p_header;
  92
  93         BUG_ON(!var || var->var_id < 0 || var->var_id >= MAXVARS);
  94         if (!var_ptrs[0]) {
  95                 for (i = 0; i < MAXVARS; i++) {
  96                         p_header = &var_headers[i];
  97                         var_ptrs[p_header->var_id] = p_header;
  98                         p_header->data = NULL;
  99                 }
 100         }
 101         p_header = var_ptrs[var->var_id];
 102         if (p_header->data)
 103                 return;
 104         p_header->data = var;
 105         switch (p_header->var_type) {
 106         case VAR_STRING:
 107                 spk_set_string_var(nothing, p_header, 0);
 108                 break;
 109         case VAR_NUM:
 110         case VAR_TIME:
 111                 spk_set_num_var(0, p_header, E_DEFAULT);
 112                 break;
 113         default:
 114                 break;
 115         }
 116 }
 117
 118 void speakup_unregister_var(enum var_id_t var_id)
 119 {
 120         struct st_var_header *p_header;
 121
 122         BUG_ON(var_id < 0 || var_id >= MAXVARS);
 123         p_header = var_ptrs[var_id];
 124         p_header->data = NULL;
 125 }
 126
 127 struct st_var_header *spk_get_var_header(enum var_id_t var_id)
 128 {
 129         struct st_var_header *p_header;
 130
 131         if (var_id < 0 || var_id >= MAXVARS)
 132                 return NULL;
 133         p_header = var_ptrs[var_id];
 134         if (!p_header->data)
 135                 return NULL;
 136         return p_header;
 137 }
 138
 139 struct st_var_header *spk_var_header_by_name(const char *name)
 140 {
 141         int i;
 142
 143         if (!name)
 144                 return NULL;
 145
 146         for (i = 0; i < MAXVARS; i++) {
 147                 if (strcmp(name, var_ptrs[i]->name) == 0)
 148                         return var_ptrs[i];
 149         }
 150         return NULL;
 151 }
 152
 153 struct var_t *spk_get_var(enum var_id_t var_id)
 154 {
 155         BUG_ON(var_id < 0 || var_id >= MAXVARS);
 156         BUG_ON(!var_ptrs[var_id]);
 157         return var_ptrs[var_id]->data;
 158 }
 159 EXPORT_SYMBOL_GPL(spk_get_var);
 160
 161 struct punc_var_t *spk_get_punc_var(enum var_id_t var_id)
 162 {
 163         struct punc_var_t *rv = NULL;
 164         struct punc_var_t *where;
 165
 166         where = punc_vars;
 167         while ((where->var_id != -1) && (!rv)) {
 168                 if (where->var_id == var_id)
 169                         rv = where;
 170                 else
 171                         where++;
 172         }
 173         return rv;
 174 }
 175
 176 /* handlers for setting vars */
 177 int spk_set_num_var(int input, struct st_var_header *var, int how)
 178 {
 179         int val;
 180         int *p_val = var->p_val;
 181         int l;
 182         char buf[32];
 183         char *cp;
 184         struct var_t *var_data = var->data;
 185
 186         if (!var_data)
 187                 return -ENODATA;
 188
 189         val = var_data->u.n.value;
 190         switch (how) {
 191         case E_NEW_DEFAULT:
 192                 if (input < var_data->u.n.low || input > var_data->u.n.high)
 193                         return -ERANGE;
 194                 var_data->u.n.default_val = input;
 195                 return 0;
 196         case E_DEFAULT:
 197                 val = var_data->u.n.default_val;
 198                 break;
 199         case E_SET:
 200                 val = input;
 201                 break;
 202         case E_INC:
 203                 val += input;
 204                 break;
 205         case E_DEC:
 206                 val -= input;
 207                 break;
 208         }
 209
 210         if (val < var_data->u.n.low || val > var_data->u.n.high)
 211                 return -ERANGE;
 212
 213         var_data->u.n.value = val;
 214         if (var->var_type == VAR_TIME && p_val) {
 215                 *p_val = msecs_to_jiffies(val);
 216                 return 0;
 217         }
 218         if (p_val)
 219                 *p_val = val;
 220         if (var->var_id == PUNC_LEVEL) {
 221                 spk_punc_mask = spk_punc_masks[val];
 222                 return 0;
 223         }
 224         if (var_data->u.n.multiplier != 0)
 225                 val *= var_data->u.n.multiplier;
 226         val += var_data->u.n.offset;
 227         if (var->var_id < FIRST_SYNTH_VAR || !synth)
 228                 return 0;
 229         if (synth->synth_adjust)
 230                 return synth->synth_adjust(var);
 231
 232         if (!var_data->u.n.synth_fmt)
 233                 return 0;
 234         if (var->var_id == PITCH)
 235                 cp = spk_pitch_buff;
 236         else
 237                 cp = buf;
 238         if (!var_data->u.n.out_str)
 239                 l = sprintf(cp, var_data->u.n.synth_fmt, (int)val);
 240         else
 241                 l = sprintf(cp, var_data->u.n.synth_fmt, var_data->u.n.out_str[val]);
 242         synth_printf("%s", cp);
 243         return 0;
 244 }
 245
 246 int spk_set_string_var(const char *page, struct st_var_header *var, int len)
 247 {
 248         struct var_t *var_data = var->data;
 249
 250         if (!var_data)
 251                 return -ENODATA;
 252         if (len > MAXVARLEN)
 253                 return -E2BIG;
 254         if (!len) {
 255                 if (!var_data->u.s.default_val)
 256                         return 0;
 257                 if (!var->p_val)
 258                         var->p_val = var_data->u.s.default_val;
 259                 if (var->p_val != var_data->u.s.default_val)
 260                         strcpy((char *)var->p_val, var_data->u.s.default_val);
 261                 return -ERESTART;
 262         } else if (var->p_val) {
 263                 strcpy((char *)var->p_val, page);
 264         } else {
 265                 return -E2BIG;
 266         }
 267         return 0;
 268 }
 269
 270 /*
 271  * spk_set_mask_bits sets or clears the punc/delim/repeat bits,
 272  * if input is null uses the defaults.
 273  * values for how: 0 clears bits of chars supplied,
 274  * 1 clears allk, 2 sets bits for chars
 275  */
 276 int spk_set_mask_bits(const char *input, const int which, const int how)
 277 {
 278         u_char *cp;
 279         short mask = spk_punc_info[which].mask;
 280
 281         if (how & 1) {
 282                 for (cp = (u_char *)spk_punc_info[3].value; *cp; cp++)
 283                         spk_chartab[*cp] &= ~mask;
 284         }
 285         cp = (u_char *)input;
 286         if (!cp) {
 287                 cp = spk_punc_info[which].value;
 288         } else {
 289                 for (; *cp; cp++) {
 290                         if (*cp < SPACE)
 291                                 break;
 292                         if (mask < PUNC) {
 293                                 if (!(spk_chartab[*cp] & PUNC))
 294                                         break;
 295                         } else if (spk_chartab[*cp] & B_NUM) {
 296                                 break;
 297                         }
 298                 }
 299                 if (*cp)
 300                         return -EINVAL;
 301                 cp = (u_char *)input;
 302         }
 303         if (how & 2) {
 304                 for (; *cp; cp++)
 305                         if (*cp > SPACE)
 306                                 spk_chartab[*cp] |= mask;
 307         } else {
 308                 for (; *cp; cp++)
 309                         if (*cp > SPACE)
 310                                 spk_chartab[*cp] &= ~mask;
 311         }
 312         return 0;
 313 }
 314
 315 char *spk_strlwr(char *s)
 316 {
 317         char *p;
 318
 319         if (!s)
 320                 return NULL;
 321
 322         for (p = s; *p; p++)
 323                 *p = tolower(*p);
 324         return s;
 325 }
 326
 327 char *spk_s2uchar(char *start, char *dest)
 328 {
 329         int val;
 330
 331         val = simple_strtoul(skip_spaces(start), &start, 10);
 332         if (*start == ',')
 333                 start++;
 334         *dest = (u_char)val;
 335         return start;
 336 }