23  * get_code() - read Unicode code point from UTF-8 stream
27  * Return:	- Unicode code point
37 		int code = 0;  in get_code()  local
43 				code = ch << 18;  in get_code()
52 			code += ch << 12;  in get_code()
53 			if ((code >= 0xD800 && code <= 0xDFFF) ||  in get_code()
54 			    code >= 0x110000)  in get_code()
62 		code += ch << 6;  in get_code()
67 		ch += code;  in get_code()
113 int console_read_unicode(s32 *code)  in console_read_unicode()  argument
120 	/* Read Unicode code */  in console_read_unicode()
121 	*code = get_code(read_console, NULL);  in console_read_unicode()
130 int utf8_put(s32 code, char **dst)  in utf8_put()  argument
134 	if ((code >= 0xD800 && code <= 0xDFFF) || code >= 0x110000)  in utf8_put()
136 	if (code <= 0x007F) {  in utf8_put()
137 		**dst = code;  in utf8_put()
139 		if (code <= 0x07FF) {  in utf8_put()
140 			**dst = code >> 6 | 0xC0;  in utf8_put()
142 			if (code < 0x10000) {  in utf8_put()
143 				**dst = code >> 12 | 0xE0;  in utf8_put()
145 				**dst = code >> 18 | 0xF0;  in utf8_put()
147 				**dst = (code >> 12 & 0x3F) | 0x80;  in utf8_put()
150 			**dst = (code >> 6 & 0x3F) | 0x80;  in utf8_put()
153 		**dst = (code & 0x3F) | 0x80;  in utf8_put()
164 		s32 code = utf8_get(&src);  in utf8_utf16_strnlen()  local
166 		if (!code)  in utf8_utf16_strnlen()
168 		if (code < 0) {  in utf8_utf16_strnlen()
171 		} else if (code < 0x10000) {  in utf8_utf16_strnlen()
186 		s32 code = utf8_get(&src);  in utf8_utf16_strncpy()  local
188 		if (code < 0)  in utf8_utf16_strncpy()
189 			code = '?';  in utf8_utf16_strncpy()
190 		utf16_put(code, dst);  in utf8_utf16_strncpy()
198 	s32 code, code2;  in utf16_get()  local
204 	code = **src;  in utf16_get()
206 	if (code >= 0xDC00 && code <= 0xDFFF)  in utf16_get()
208 	if (code >= 0xD800 && code <= 0xDBFF) {  in utf16_get()
211 		code &= 0x3ff;  in utf16_get()
212 		code <<= 10;  in utf16_get()
213 		code += 0x10000;  in utf16_get()
219 		code += code2;  in utf16_get()
221 	return code;  in utf16_get()
224 int utf16_put(s32 code, u16 **dst)  in utf16_put()  argument
228 	if ((code >= 0xD800 && code <= 0xDFFF) || code >= 0x110000)  in utf16_put()
230 	if (code < 0x10000) {  in utf16_put()
231 		**dst = code;  in utf16_put()
233 		code -= 0x10000;  in utf16_put()
234 		**dst = code >> 10 | 0xD800;  in utf16_put()
236 		**dst = (code & 0x3ff) | 0xDC00;  in utf16_put()
247 		s32 code = utf16_get(&src);  in utf16_strnlen()  local
249 		if (!code)  in utf16_strnlen()
265 		s32 code = utf16_get(&src);  in utf16_utf8_strnlen()  local
267 		if (!code)  in utf16_utf8_strnlen()
269 		if (code < 0)  in utf16_utf8_strnlen()
272 		else if (code < 0x80)  in utf16_utf8_strnlen()
274 		else if (code < 0x800)  in utf16_utf8_strnlen()
276 		else if (code < 0x10000)  in utf16_utf8_strnlen()
290 		s32 code = utf16_get(&src);  in utf16_utf8_strncpy()  local
292 		if (code < 0)  in utf16_utf8_strncpy()
293 			code = '?';  in utf16_utf8_strncpy()
294 		utf8_put(code, dst);  in utf16_utf8_strncpy()
300 s32 utf_to_lower(const s32 code)  in utf_to_lower()  argument
303 	s32 ret = code;  in utf_to_lower()
305 	if (code <= 0x7f) {  in utf_to_lower()
306 		if (code >= 'A' && code <= 'Z')  in utf_to_lower()
311 		if (pos->upper == code) {  in utf_to_lower()
319 s32 utf_to_upper(const s32 code)  in utf_to_upper()  argument
322 	s32 ret = code;  in utf_to_upper()
324 	if (code <= 0x7f) {  in utf_to_upper()
325 		if (code >= 'a' && code <= 'z')  in utf_to_upper()
330 		if (pos->lower == code) {  in utf_to_upper()
387 		uint32_t code = *src++;  in utf16_to_utf8()  local
390 			if (code >= 0xDC00 && code <= 0xDFFF) {  in utf16_to_utf8()
392 				code = ((code_high - 0xD800) << 10) + (code - 0xDC00) + 0x10000;  in utf16_to_utf8()
394 				*dest++ = (code >> 18) | 0xF0;  in utf16_to_utf8()
395 				*dest++ = ((code >> 12) & 0x3F) | 0x80;  in utf16_to_utf8()
396 				*dest++ = ((code >> 6) & 0x3F) | 0x80;  in utf16_to_utf8()
397 				*dest++ = (code & 0x3F) | 0x80;  in utf16_to_utf8()
407 			if (code <= 0x007F) {  in utf16_to_utf8()
408 				*dest++ = code;  in utf16_to_utf8()
409 			} else if (code <= 0x07FF) {  in utf16_to_utf8()
410 				*dest++ = (code >> 6) | 0xC0;  in utf16_to_utf8()
411 				*dest++ = (code & 0x3F) | 0x80;  in utf16_to_utf8()
412 			} else if (code >= 0xD800 && code <= 0xDBFF) {  in utf16_to_utf8()
413 				code_high = code;  in utf16_to_utf8()
415 			} else if (code >= 0xDC00 && code <= 0xDFFF) {  in utf16_to_utf8()
418 			} else if (code < 0x10000) {  in utf16_to_utf8()
419 				*dest++ = (code >> 12) | 0xE0;  in utf16_to_utf8()
420 				*dest++ = ((code >> 6) & 0x3F) | 0x80;  in utf16_to_utf8()
421 				*dest++ = (code & 0x3F) | 0x80;  in utf16_to_utf8()
423 				*dest++ = (code >> 18) | 0xF0;  in utf16_to_utf8()
424 				*dest++ = ((code >> 12) & 0x3F) | 0x80;  in utf16_to_utf8()
425 				*dest++ = ((code >> 6) & 0x3F) | 0x80;  in utf16_to_utf8()
426 				*dest++ = (code & 0x3F) | 0x80;  in utf16_to_utf8()