u-boot/include/charset.h

1 /* SPDX-License-Identifier: GPL-2.0+ */
14 #define MAX_UTF8_PER_UTF16 3
17  * console_read_unicode() - read Unicode code point from console
19  * @code:	pointer to store Unicode code point
25  * utf8_get() - get next UTF-8 code point from buffer
27  * @src:		pointer to current byte, updated to point to next byte
28  * Return:		code point, or 0 for end of string, or -1 if no legal
29  *			code point is found. In case of an error src points to
35  * utf8_put() - write UTF-8 code point to buffer
37  * @code:		code point
39  * Return:		-1 if the input parameters are invalid
44  * utf8_utf16_strnlen() - length of a truncated utf-8 string after conversion
45  *			  to utf-16
47  * @src:		utf-8 string
49  * Return:		length in bytes after conversion to utf-16 without the
50  *			trailing \0. If an invalid UTF-8 sequence is hit one
56  * utf8_utf16_strlen() - length of a utf-8 string after conversion to utf-16
58  * @src:		utf-8 string
59  * Return:		length in bytes after conversion to utf-16 without the
60  *			trailing \0. -1 if the utf-8 string is not valid.
65  * utf8_utf16_strncpy() - copy utf-8 string to utf-16 string
70  * Return:		-1 if the input parameters are invalid
75  * utf8_utf16_strcpy() - copy utf-8 string to utf-16 string
79  * Return:		-1 if the input parameters are invalid
84  * utf16_get() - get next UTF-16 code point from buffer
86  * @src:		pointer to current word, updated to point to next word
87  * Return:		code point, or 0 for end of string, or -1 if no legal
88  *			code point is found. In case of an error src points to
94  * utf16_put() - write UTF-16 code point to buffer
96  * @code:		code point
98  * Return:		-1 if the input parameters are invalid
103  * utf16_strnlen() - length of a truncated utf-16 string
105  * @src:		utf-16 string
107  * Return:		length in code points. If an invalid UTF-16 sequence is
114  * utf16_utf8_strnlen() - length of a truncated utf-16 string after conversion
115  *			  to utf-8
117  * @src:		utf-16 string
119  * Return:		length in bytes after conversion to utf-8 without the
120  *			trailing \0. If an invalid UTF-16 sequence is hit one
126  * utf16_utf8_strlen() - length of a utf-16 string after conversion to utf-8
128  * @src:		utf-16 string
129  * Return:		length in bytes after conversion to utf-8 without the
130  *			trailing \0. -1 if the utf-16 string is not valid.
135  * utf16_utf8_strncpy() - copy utf-16 string to utf-8 string
140  * Return:		-1 if the input parameters are invalid
145  * utf16_utf8_strcpy() - copy utf-16 string to utf-8 string
149  * Return:		-1 if the input parameters are invalid
154  * utf_to_lower() - convert a Unicode letter to lower case
162  * utf_to_upper() - convert a Unicode letter to upper case
170  * u16_strlen - count non-zero words
172  * This function matches wsclen() if the -fshort-wchar compiler flag is set.
176  * ReturnValue:		number of non-zero words.
177  *			This is not the number of utf-16 letters!
182  * u16_strlen - count non-zero words
184  * This function matches wscnlen_s() if the -fshort-wchar compiler flag is set.
189  * ReturnValue:		number of non-zero words.
190  *			This is not the number of utf-16 letters!
195  * u16_strcpy() - copy u16 string
207  * u16_strdup() - duplicate u16 string
218  * utf16_to_utf8() - Convert an utf16 string to utf8
223  * NOTE that a single utf16 character can generate up to 3 utf8