drivers/accessibility/speakup/varhandlers.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 #include <linux/ctype.h>
 #include "spk_types.h"
 #include "spk_priv.h"
 #include "speakup.h"

 static struct st_var_header var_headers[] = {
 	{ "version", VERSION, VAR_PROC, NULL, NULL },
 	{ "synth_name", SYNTH, VAR_PROC, NULL, NULL },
 	{ "keymap", KEYMAP, VAR_PROC, NULL, NULL },
 	{ "silent", SILENT, VAR_PROC, NULL, NULL },
 	{ "punc_some", PUNC_SOME, VAR_PROC, NULL, NULL },
 	{ "punc_most", PUNC_MOST, VAR_PROC, NULL, NULL },
 	{ "punc_all", PUNC_ALL, VAR_PROC, NULL, NULL },
 	{ "delimiters", DELIM, VAR_PROC, NULL, NULL },
 	{ "repeats", REPEATS, VAR_PROC, NULL, NULL },
 	{ "ex_num", EXNUMBER, VAR_PROC, NULL, NULL },
 	{ "characters", CHARS, VAR_PROC, NULL, NULL },
 	{ "synth_direct", SYNTH_DIRECT, VAR_PROC, NULL, NULL },
 	{ "caps_start", CAPS_START, VAR_STRING, spk_str_caps_start, NULL },
 	{ "caps_stop", CAPS_STOP, VAR_STRING, spk_str_caps_stop, NULL },
 	{ "delay_time", DELAY, VAR_TIME, NULL, NULL },
 	{ "trigger_time", TRIGGER, VAR_TIME, NULL, NULL },
 	{ "jiffy_delta", JIFFY, VAR_TIME, NULL, NULL },
 	{ "full_time", FULL, VAR_TIME, NULL, NULL },
 	{ "flush_time", FLUSH, VAR_TIME, NULL, NULL },
 	{ "spell_delay", SPELL_DELAY, VAR_NUM, &spk_spell_delay, NULL },
 	{ "bleeps", BLEEPS, VAR_NUM, &spk_bleeps, NULL },
 	{ "attrib_bleep", ATTRIB_BLEEP, VAR_NUM, &spk_attrib_bleep, NULL },
 	{ "bleep_time", BLEEP_TIME, VAR_TIME, &spk_bleep_time, NULL },
 	{ "cursor_time", CURSOR_TIME, VAR_TIME, NULL, NULL },
 	{ "punc_level", PUNC_LEVEL, VAR_NUM, &spk_punc_level, NULL },
 	{ "reading_punc", READING_PUNC, VAR_NUM, &spk_reading_punc, NULL },
 	{ "say_control", SAY_CONTROL, VAR_NUM, &spk_say_ctrl, NULL },
 	{ "say_word_ctl", SAY_WORD_CTL, VAR_NUM, &spk_say_word_ctl, NULL },
 	{ "no_interrupt", NO_INTERRUPT, VAR_NUM, &spk_no_intr, NULL },
 	{ "key_echo", KEY_ECHO, VAR_NUM, &spk_key_echo, NULL },
 	{ "bell_pos", BELL_POS, VAR_NUM, &spk_bell_pos, NULL },
 	{ "rate", RATE, VAR_NUM, NULL, NULL },
 	{ "pitch", PITCH, VAR_NUM, NULL, NULL },
 	{ "inflection", INFLECTION, VAR_NUM, NULL, NULL },
 	{ "vol", VOL, VAR_NUM, NULL, NULL },
 	{ "tone", TONE, VAR_NUM, NULL, NULL },
 	{ "punct", PUNCT, VAR_NUM, NULL, NULL   },
 	{ "voice", VOICE, VAR_NUM, NULL, NULL },
 	{ "freq", FREQUENCY, VAR_NUM, NULL, NULL },
 	{ "lang", LANG, VAR_NUM, NULL, NULL },
 	{ "chartab", CHARTAB, VAR_PROC, NULL, NULL },
 	{ "direct", DIRECT, VAR_NUM, NULL, NULL },
 	{ "pause", PAUSE, VAR_STRING, spk_str_pause, NULL },
 };

 static struct st_var_header *var_ptrs[MAXVARS] = { NULL, NULL, NULL };

 static struct punc_var_t punc_vars[] = {
 	{ PUNC_SOME, 1 },
 	{ PUNC_MOST, 2 },
 	{ PUNC_ALL, 3 },
 	{ DELIM, 4 },
 	{ REPEATS, 5 },
 	{ EXNUMBER, 6 },
 	{ -1, -1 },
 };

 int spk_chartab_get_value(char *keyword)
 {
 	int value = 0;

 	if (!strcmp(keyword, "ALPHA"))
 		value = ALPHA;
 	else if (!strcmp(keyword, "B_CTL"))
 		value = B_CTL;
 	else if (!strcmp(keyword, "WDLM"))
 		value = WDLM;
 	else if (!strcmp(keyword, "A_PUNC"))
 		value = A_PUNC;
 	else if (!strcmp(keyword, "PUNC"))
 		value = PUNC;
 	else if (!strcmp(keyword, "NUM"))
 		value = NUM;
 	else if (!strcmp(keyword, "A_CAP"))
 		value = A_CAP;
 	else if (!strcmp(keyword, "B_CAPSYM"))
 		value = B_CAPSYM;
 	else if (!strcmp(keyword, "B_SYM"))
 		value = B_SYM;
 	return value;
 }

 void speakup_register_var(struct var_t *var)
 {
 	static char nothing[2] = "\0";
 	int i;
 	struct st_var_header *p_header;

 	BUG_ON(!var || var->var_id < 0 || var->var_id >= MAXVARS);
 	if (!var_ptrs[0]) {
 		for (i = 0; i < MAXVARS; i++) {
 			p_header = &var_headers[i];
 			var_ptrs[p_header->var_id] = p_header;
 			p_header->data = NULL;
 		}
 	}
 	p_header = var_ptrs[var->var_id];
 	if (p_header->data)
 		return;
 	p_header->data = var;
 	switch (p_header->var_type) {
 	case VAR_STRING:
 		spk_set_string_var(nothing, p_header, 0);
 		break;
 	case VAR_NUM:
 	case VAR_TIME:
 		spk_set_num_var(0, p_header, E_DEFAULT);
 		break;
 	default:
 		break;
 	}
 }

 void speakup_unregister_var(enum var_id_t var_id)
 {
 	struct st_var_header *p_header;

 	BUG_ON(var_id < 0 || var_id >= MAXVARS);
 	p_header = var_ptrs[var_id];
 	p_header->data = NULL;
 }

 struct st_var_header *spk_get_var_header(enum var_id_t var_id)
 {
 	struct st_var_header *p_header;

 	if (var_id < 0 || var_id >= MAXVARS)
 		return NULL;
 	p_header = var_ptrs[var_id];
 	if (!p_header->data)
 		return NULL;
 	return p_header;
 }

 struct st_var_header *spk_var_header_by_name(const char *name)
 {
 	int i;

 	if (!name)
 		return NULL;

 	for (i = 0; i < MAXVARS; i++) {
 		if (strcmp(name, var_ptrs[i]->name) == 0)
 			return var_ptrs[i];
 	}
 	return NULL;
 }

 struct var_t *spk_get_var(enum var_id_t var_id)
 {
 	BUG_ON(var_id < 0 || var_id >= MAXVARS);
 	BUG_ON(!var_ptrs[var_id]);
 	return var_ptrs[var_id]->data;
 }
 EXPORT_SYMBOL_GPL(spk_get_var);

 struct punc_var_t *spk_get_punc_var(enum var_id_t var_id)
 {
 	struct punc_var_t *rv = NULL;
 	struct punc_var_t *where;

 	where = punc_vars;
 	while ((where->var_id != -1) && (!rv)) {
 		if (where->var_id == var_id)
 			rv = where;
 		else
 			where++;
 	}
 	return rv;
 }

 /* handlers for setting vars */
 int spk_set_num_var(int input, struct st_var_header *var, int how)
 {
 	int val;
 	int *p_val = var->p_val;
 	char buf[32];
 	char *cp;
 	struct var_t *var_data = var->data;

 	if (!var_data)
 		return -ENODATA;

 	val = var_data->u.n.value;
 	switch (how) {
 	case E_NEW_DEFAULT:
 		if (input < var_data->u.n.low || input > var_data->u.n.high)
 			return -ERANGE;
 		var_data->u.n.default_val = input;
 		return 0;
 	case E_DEFAULT:
 		val = var_data->u.n.default_val;
 		break;
 	case E_SET:
 		val = input;
 		break;
 	case E_INC:
 		val += input;
 		break;
 	case E_DEC:
 		val -= input;
 		break;
 	}

 	if (val < var_data->u.n.low || val > var_data->u.n.high)
 		return -ERANGE;

 	var_data->u.n.value = val;
 	if (var->var_type == VAR_TIME && p_val) {
 		*p_val = msecs_to_jiffies(val);
 		return 0;
 	}
 	if (p_val)
 		*p_val = val;
 	if (var->var_id == PUNC_LEVEL) {
 		spk_punc_mask = spk_punc_masks[val];
 		return 0;
 	}
 	if (var_data->u.n.multiplier != 0)
 		val *= var_data->u.n.multiplier;
 	val += var_data->u.n.offset;
 	if (var->var_id < FIRST_SYNTH_VAR || !synth)
 		return 0;
 	if (synth->synth_adjust)
 		return synth->synth_adjust(var);

 	if (!var_data->u.n.synth_fmt)
 		return 0;
 	if (var->var_id == PITCH)
 		cp = spk_pitch_buff;
 	else
 		cp = buf;
 	if (!var_data->u.n.out_str)
 		sprintf(cp, var_data->u.n.synth_fmt, (int)val);
 	else
 		sprintf(cp, var_data->u.n.synth_fmt,
 			var_data->u.n.out_str[val]);
 	synth_printf("%s", cp);
 	return 0;
 }

 int spk_set_string_var(const char *page, struct st_var_header *var, int len)
 {
 	struct var_t *var_data = var->data;

 	if (!var_data)
 		return -ENODATA;
 	if (len > MAXVARLEN)
 		return -E2BIG;
 	if (!len) {
 		if (!var_data->u.s.default_val)
 			return 0;
 		if (!var->p_val)
 			var->p_val = var_data->u.s.default_val;
 		if (var->p_val != var_data->u.s.default_val)
 			strcpy((char *)var->p_val, var_data->u.s.default_val);
 		return -ERESTART;
 	} else if (var->p_val) {
 		strcpy((char *)var->p_val, page);
 	} else {
 		return -E2BIG;
 	}
 	return 0;
 }

 /*
  * spk_set_mask_bits sets or clears the punc/delim/repeat bits,
  * if input is null uses the defaults.
  * values for how: 0 clears bits of chars supplied,
  * 1 clears allk, 2 sets bits for chars
  */
 int spk_set_mask_bits(const char *input, const int which, const int how)
 {
 	u_char *cp;
 	short mask = spk_punc_info[which].mask;

 	if (how & 1) {
 		for (cp = (u_char *)spk_punc_info[3].value; *cp; cp++)
 			spk_chartab[*cp] &= ~mask;
 	}
 	cp = (u_char *)input;
 	if (!cp) {
 		cp = spk_punc_info[which].value;
 	} else {
 		for (; *cp; cp++) {
 			if (*cp < SPACE)
 				break;
 			if (mask < PUNC) {
 				if (!(spk_chartab[*cp] & PUNC))
 					break;
 			} else if (spk_chartab[*cp] & B_NUM) {
 				break;
 			}
 		}
 		if (*cp)
 			return -EINVAL;
 		cp = (u_char *)input;
 	}
 	if (how & 2) {
 		for (; *cp; cp++)
 			if (*cp > SPACE)
 				spk_chartab[*cp] |= mask;
 	} else {
 		for (; *cp; cp++)
 			if (*cp > SPACE)
 				spk_chartab[*cp] &= ~mask;
 	}
 	return 0;
 }

 char *spk_strlwr(char *s)
 {
 	char *p;

 	if (!s)
 		return NULL;

 	for (p = s; *p; p++)
 		*p = tolower(*p);
 	return s;
 }

 char *spk_s2uchar(char *start, char *dest)
 {
 	int val;

 	/* Do not replace with kstrtoul: here we need start to be updated */
 	val = simple_strtoul(skip_spaces(start), &start, 10);
 	if (*start == ',')
 		start++;
 	*dest = (u_char)val;
 	return start;
 }
	// SPDX-License-Identifier: GPL-2.0
	#include <linux/ctype.h>
	#include "spk_types.h"
	#include "spk_priv.h"
	#include "speakup.h"

	static struct st_var_header var_headers[] = {
	{ "version", VERSION, VAR_PROC, NULL, NULL },
	{ "synth_name", SYNTH, VAR_PROC, NULL, NULL },
	{ "keymap", KEYMAP, VAR_PROC, NULL, NULL },
	{ "silent", SILENT, VAR_PROC, NULL, NULL },
	{ "punc_some", PUNC_SOME, VAR_PROC, NULL, NULL },
	{ "punc_most", PUNC_MOST, VAR_PROC, NULL, NULL },
	{ "punc_all", PUNC_ALL, VAR_PROC, NULL, NULL },
	{ "delimiters", DELIM, VAR_PROC, NULL, NULL },
	{ "repeats", REPEATS, VAR_PROC, NULL, NULL },
	{ "ex_num", EXNUMBER, VAR_PROC, NULL, NULL },
	{ "characters", CHARS, VAR_PROC, NULL, NULL },
	{ "synth_direct", SYNTH_DIRECT, VAR_PROC, NULL, NULL },
	{ "caps_start", CAPS_START, VAR_STRING, spk_str_caps_start, NULL },
	{ "caps_stop", CAPS_STOP, VAR_STRING, spk_str_caps_stop, NULL },
	{ "delay_time", DELAY, VAR_TIME, NULL, NULL },
	{ "trigger_time", TRIGGER, VAR_TIME, NULL, NULL },
	{ "jiffy_delta", JIFFY, VAR_TIME, NULL, NULL },
	{ "full_time", FULL, VAR_TIME, NULL, NULL },
	{ "flush_time", FLUSH, VAR_TIME, NULL, NULL },
	{ "spell_delay", SPELL_DELAY, VAR_NUM, &spk_spell_delay, NULL },
	{ "bleeps", BLEEPS, VAR_NUM, &spk_bleeps, NULL },
	{ "attrib_bleep", ATTRIB_BLEEP, VAR_NUM, &spk_attrib_bleep, NULL },
	{ "bleep_time", BLEEP_TIME, VAR_TIME, &spk_bleep_time, NULL },
	{ "cursor_time", CURSOR_TIME, VAR_TIME, NULL, NULL },
	{ "punc_level", PUNC_LEVEL, VAR_NUM, &spk_punc_level, NULL },
	{ "reading_punc", READING_PUNC, VAR_NUM, &spk_reading_punc, NULL },
	{ "say_control", SAY_CONTROL, VAR_NUM, &spk_say_ctrl, NULL },
	{ "say_word_ctl", SAY_WORD_CTL, VAR_NUM, &spk_say_word_ctl, NULL },
	{ "no_interrupt", NO_INTERRUPT, VAR_NUM, &spk_no_intr, NULL },
	{ "key_echo", KEY_ECHO, VAR_NUM, &spk_key_echo, NULL },
	{ "bell_pos", BELL_POS, VAR_NUM, &spk_bell_pos, NULL },
	{ "rate", RATE, VAR_NUM, NULL, NULL },
	{ "pitch", PITCH, VAR_NUM, NULL, NULL },
	{ "inflection", INFLECTION, VAR_NUM, NULL, NULL },
	{ "vol", VOL, VAR_NUM, NULL, NULL },
	{ "tone", TONE, VAR_NUM, NULL, NULL },
	{ "punct", PUNCT, VAR_NUM, NULL, NULL },
	{ "voice", VOICE, VAR_NUM, NULL, NULL },
	{ "freq", FREQUENCY, VAR_NUM, NULL, NULL },
	{ "lang", LANG, VAR_NUM, NULL, NULL },
	{ "chartab", CHARTAB, VAR_PROC, NULL, NULL },
	{ "direct", DIRECT, VAR_NUM, NULL, NULL },
	{ "pause", PAUSE, VAR_STRING, spk_str_pause, NULL },
	};

	static struct st_var_header *var_ptrs[MAXVARS] = { NULL, NULL, NULL };

	static struct punc_var_t punc_vars[] = {
	{ PUNC_SOME, 1 },
	{ PUNC_MOST, 2 },
	{ PUNC_ALL, 3 },
	{ DELIM, 4 },
	{ REPEATS, 5 },
	{ EXNUMBER, 6 },
	{ -1, -1 },
	};

	int spk_chartab_get_value(char *keyword)
	{
	int value = 0;

	if (!strcmp(keyword, "ALPHA"))
	value = ALPHA;
	else if (!strcmp(keyword, "B_CTL"))
	value = B_CTL;
	else if (!strcmp(keyword, "WDLM"))
	value = WDLM;
	else if (!strcmp(keyword, "A_PUNC"))
	value = A_PUNC;
	else if (!strcmp(keyword, "PUNC"))
	value = PUNC;
	else if (!strcmp(keyword, "NUM"))
	value = NUM;
	else if (!strcmp(keyword, "A_CAP"))
	value = A_CAP;
	else if (!strcmp(keyword, "B_CAPSYM"))
	value = B_CAPSYM;
	else if (!strcmp(keyword, "B_SYM"))
	value = B_SYM;
	return value;
	}

	void speakup_register_var(struct var_t *var)
	{
	static char nothing[2] = "\0";
	int i;
	struct st_var_header *p_header;

	BUG_ON(!var \|\| var->var_id < 0 \|\| var->var_id >= MAXVARS);
	if (!var_ptrs[0]) {
	for (i = 0; i < MAXVARS; i++) {
	p_header = &var_headers[i];
	var_ptrs[p_header->var_id] = p_header;
	p_header->data = NULL;
	}
	}
	p_header = var_ptrs[var->var_id];
	if (p_header->data)
	return;
	p_header->data = var;
	switch (p_header->var_type) {
	case VAR_STRING:
	spk_set_string_var(nothing, p_header, 0);
	break;
	case VAR_NUM:
	case VAR_TIME:
	spk_set_num_var(0, p_header, E_DEFAULT);
	break;
	default:
	break;
	}
	}

	void speakup_unregister_var(enum var_id_t var_id)
	{
	struct st_var_header *p_header;

	BUG_ON(var_id < 0 \|\| var_id >= MAXVARS);
	p_header = var_ptrs[var_id];
	p_header->data = NULL;
	}

	struct st_var_header *spk_get_var_header(enum var_id_t var_id)
	{
	struct st_var_header *p_header;

	if (var_id < 0 \|\| var_id >= MAXVARS)
	return NULL;
	p_header = var_ptrs[var_id];
	if (!p_header->data)
	return NULL;
	return p_header;
	}

	struct st_var_header spk_var_header_by_name(const char name)
	{
	int i;

	if (!name)
	return NULL;

	for (i = 0; i < MAXVARS; i++) {
	if (strcmp(name, var_ptrs[i]->name) == 0)
	return var_ptrs[i];
	}
	return NULL;
	}

	struct var_t *spk_get_var(enum var_id_t var_id)
	{
	BUG_ON(var_id < 0 \|\| var_id >= MAXVARS);
	BUG_ON(!var_ptrs[var_id]);
	return var_ptrs[var_id]->data;
	}
	EXPORT_SYMBOL_GPL(spk_get_var);

	struct punc_var_t *spk_get_punc_var(enum var_id_t var_id)
	{
	struct punc_var_t *rv = NULL;
	struct punc_var_t *where;

	where = punc_vars;
	while ((where->var_id != -1) && (!rv)) {
	if (where->var_id == var_id)
	rv = where;
	else
	where++;
	}
	return rv;
	}

	/* handlers for setting vars */
	int spk_set_num_var(int input, struct st_var_header *var, int how)
	{
	int val;
	int *p_val = var->p_val;
	char buf[32];
	char *cp;
	struct var_t *var_data = var->data;

	if (!var_data)
	return -ENODATA;

	val = var_data->u.n.value;
	switch (how) {
	case E_NEW_DEFAULT:
	if (input < var_data->u.n.low \|\| input > var_data->u.n.high)
	return -ERANGE;
	var_data->u.n.default_val = input;
	return 0;
	case E_DEFAULT:
	val = var_data->u.n.default_val;
	break;
	case E_SET:
	val = input;
	break;
	case E_INC:
	val += input;
	break;
	case E_DEC:
	val -= input;
	break;
	}

	if (val < var_data->u.n.low \|\| val > var_data->u.n.high)
	return -ERANGE;

	var_data->u.n.value = val;
	if (var->var_type == VAR_TIME && p_val) {
	*p_val = msecs_to_jiffies(val);
	return 0;
	}
	if (p_val)
	*p_val = val;
	if (var->var_id == PUNC_LEVEL) {
	spk_punc_mask = spk_punc_masks[val];
	return 0;
	}
	if (var_data->u.n.multiplier != 0)
	val *= var_data->u.n.multiplier;
	val += var_data->u.n.offset;
	if (var->var_id < FIRST_SYNTH_VAR \|\| !synth)
	return 0;
	if (synth->synth_adjust)
	return synth->synth_adjust(var);

	if (!var_data->u.n.synth_fmt)
	return 0;
	if (var->var_id == PITCH)
	cp = spk_pitch_buff;
	else
	cp = buf;
	if (!var_data->u.n.out_str)
	sprintf(cp, var_data->u.n.synth_fmt, (int)val);
	else
	sprintf(cp, var_data->u.n.synth_fmt,
	var_data->u.n.out_str[val]);
	synth_printf("%s", cp);
	return 0;
	}

	int spk_set_string_var(const char page, struct st_var_header var, int len)
	{
	struct var_t *var_data = var->data;

	if (!var_data)
	return -ENODATA;
	if (len > MAXVARLEN)
	return -E2BIG;
	if (!len) {
	if (!var_data->u.s.default_val)
	return 0;
	if (!var->p_val)
	var->p_val = var_data->u.s.default_val;
	if (var->p_val != var_data->u.s.default_val)
	strcpy((char *)var->p_val, var_data->u.s.default_val);
	return -ERESTART;
	} else if (var->p_val) {
	strcpy((char *)var->p_val, page);
	} else {
	return -E2BIG;
	}
	return 0;
	}

	/*
	* spk_set_mask_bits sets or clears the punc/delim/repeat bits,
	* if input is null uses the defaults.
	* values for how: 0 clears bits of chars supplied,
	* 1 clears allk, 2 sets bits for chars
	*/
	int spk_set_mask_bits(const char *input, const int which, const int how)
	{
	u_char *cp;
	short mask = spk_punc_info[which].mask;

	if (how & 1) {
	for (cp = (u_char )spk_punc_info[3].value; cp; cp++)
	spk_chartab[*cp] &= ~mask;
	}
	cp = (u_char *)input;
	if (!cp) {
	cp = spk_punc_info[which].value;
	} else {
	for (; *cp; cp++) {
	if (*cp < SPACE)
	break;
	if (mask < PUNC) {
	if (!(spk_chartab[*cp] & PUNC))
	break;
	} else if (spk_chartab[*cp] & B_NUM) {
	break;
	}
	}
	if (*cp)
	return -EINVAL;
	cp = (u_char *)input;
	}
	if (how & 2) {
	for (; *cp; cp++)
	if (*cp > SPACE)
	spk_chartab[*cp] \|= mask;
	} else {
	for (; *cp; cp++)
	if (*cp > SPACE)
	spk_chartab[*cp] &= ~mask;
	}
	return 0;
	}

	char spk_strlwr(char s)
	{
	char *p;

	if (!s)
	return NULL;

	for (p = s; *p; p++)
	p = tolower(p);
	return s;
	}

	char spk_s2uchar(char start, char *dest)
	{
	int val;

	/* Do not replace with kstrtoul: here we need start to be updated */
	val = simple_strtoul(skip_spaces(start), &start, 10);
	if (*start == ',')
	start++;
	*dest = (u_char)val;
	return start;
	}