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Prepare Arabic letters using PrepareLetters() function

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PrepareLetters() function also could be used to set up letter groups A, B, C, etc. from string
and further could be loaded from configuration file
This commit is contained in:
Valdis Vitolins
2018-07-15 18:26:28 +03:00
parent 801a8d197c
commit 1cf7549392
1 changed files with 64 additions and 0 deletions
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src/libespeak-ng/tr_languages.c
+64
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@@ -113,6 +113,8 @@ ALPHABET *AlphabetFromChar(int c)
static void Translator_Russian(Translator *tr);
static void PrepareLetters(char *, char *, int, int);
static void ResetLetterBits(Translator *tr, int groups)
{
// Clear all the specified groups
@@ -391,6 +393,38 @@ static const unsigned char ru_consonants[] = { // б в г д ж з й к л м
0x11, 0x12, 0x13, 0x14, 0x16, 0x17, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1f, 0x20, 0x21, 0x22, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2c, 0x73, 0x7b, 0x83, 0x9b, 0
};
static void SetArabicLetters(Translator *tr)
{
const char ar_vowel_letters[] = {"َ ُ ِ"};
const char ar_consonant_letters[] = {"ب پ ت ة ث ج ح خ د ذ ر ز س ش ص ض ط ظ ع غ ف ق ك ل م ن ئ ؤ ء أ آ إ ه"};
const char ar_consonant_vowel_letters[] = {"ا و ي"};
const char ar_thick_letters[] = {"ص ض ط ظ ق"};
const char ar_shadda_letter[] = {" ّ "};
const char ar_hamza_letter[] = {" ّ "};
const char ar_sukun_letter[] = {" ّ "};
static char ar_vowel_codes[4];
static char ar_consonant_codes[34];
static char ar_consonant_vowel_codes[4];
static char ar_thick_codes[6];
static char ar_shadda_code[2];
static char ar_hamza_code[2];
static char ar_sukun_code[2];
PrepareLetters(&ar_vowel_letters, &ar_vowel_codes, 4, OFFSET_ARABIC);
PrepareLetters(&ar_consonant_letters, &ar_consonant_codes, 34, OFFSET_ARABIC);
PrepareLetters(&ar_consonant_vowel_letters, &ar_consonant_vowel_codes, 4, OFFSET_ARABIC);
PrepareLetters(&ar_thick_letters, &ar_thick_codes, 6, OFFSET_ARABIC);
PrepareLetters(&ar_shadda_letter, &ar_shadda_code, 2, OFFSET_ARABIC);
PrepareLetters(&ar_hamza_letter, &ar_hamza_code, 2, OFFSET_ARABIC);
PrepareLetters(&ar_sukun_letter, &ar_sukun_code, 2, OFFSET_ARABIC);
SetLetterBits(tr, LETTERGP_A, (char *) ar_vowel_codes);
SetLetterBits(tr, LETTERGP_B, (char *) ar_consonant_vowel_codes);
SetLetterBits(tr, LETTERGP_C, (char *) ar_consonant_codes);
SetLetterBits(tr, LETTERGP_F, (char *) ar_thick_codes);
SetLetterBits(tr, LETTERGP_G, (char *) ar_shadda_code);
SetLetterBits(tr, LETTERGP_H, (char *) ar_hamza_code);
SetLetterBits(tr, LETTERGP_Y, (char *) ar_sukun_code);
}
static void SetCyrillicLetters(Translator *tr)
{
// character codes offset by 0x420
@@ -510,6 +544,7 @@ Translator *SelectTranslator(const char *name)
tr->langopts.numbers = NUM_SWAP_TENS | NUM_AND_UNITS | NUM_HUNDRED_AND | NUM_OMIT_1_HUNDRED | NUM_AND_HUNDRED | NUM_THOUSAND_AND | NUM_OMIT_1_THOUSAND;
tr->langopts.param[LOPT_UNPRONOUNCABLE] = 1; // disable check for unpronouncable words
tr->encoding = ESPEAKNG_ENCODING_ISO_8859_6;
SetArabicLetters(tr);
break;
case L('b', 'g'): // Bulgarian
{
@@ -1585,3 +1620,32 @@ static void Translator_Russian(Translator *tr)
tr->langopts.numbers = NUM_DECIMAL_COMMA | NUM_OMIT_1_HUNDRED;
tr->langopts.numbers2 = 0x2 + NUM2_THOUSANDS_VAR1; // variant numbers before thousands
}
static void PrepareLetters(char *letters, char *codes, int size, int shift)
{
/* Prepare array of shifted letter codes for letter groups from passed string.
* letters: pointer to string of UTF-8 encoded letters (can be space delimited).
* codes: pointer to array of letter codes.
* size: size of reserved cells in codes array, (last cell in codes should be leaved for null value).
* shift: value of downshift, to fit UTF-16 letters into ANSII (char) range.
*/
unsigned char *p = letters;
int bytes = 0;
int code = -1;
int count = 0;
while (code != 0) {
bytes = utf8_in(&code, p);
if (code > 0x20) {
*codes = code - shift;
codes++;
count++;
}
p += bytes;
}
codes++;
*codes = 0;
if (size != count + 1)
fprintf(stderr,
"PrepareLetters() error: different sizes of letter arrays reserved: %d, used:%d.\n",
size, count + 1);
}