#define MAX_UTF8_PER_UTF16 3
+/*
+ * codepage_437 - Unicode to codepage 437 translation table
+ */
+extern const u16 codepage_437[128];
+
/**
* console_read_unicode() - read Unicode code point from console
*
/**
* utf8_utf16_strlen() - length of a utf-8 string after conversion to utf-16
*
- * @src: utf-8 string
+ * @a: utf-8 string
* Return: length in u16 after conversion to utf-16 without the
* trailing \0. If an invalid UTF-8 sequence is hit one
* u16 will be reserved for a replacement character.
/**
* utf8_utf16_strcpy() - copy utf-8 string to utf-16 string
*
- * @dst: destination buffer
- * @src: source buffer
+ * @d: destination buffer
+ * @s: source buffer
* Return: -1 if the input parameters are invalid
*/
#define utf8_utf16_strcpy(d, s) utf8_utf16_strncpy((d), (s), SIZE_MAX)
/**
* utf16_utf8_strlen() - length of a utf-16 string after conversion to utf-8
*
- * @src: utf-16 string
+ * @a: utf-16 string
* Return: length in bytes after conversion to utf-8 without the
* trailing \0. If an invalid UTF-16 sequence is hit one
* byte will be reserved for a replacement character.
/**
* utf16_utf8_strcpy() - copy utf-16 string to utf-8 string
*
- * @dst: destination buffer
- * @src: source buffer
+ * @d: destination buffer
+ * @s: source buffer
* Return: -1 if the input parameters are invalid
*/
#define utf16_utf8_strcpy(d, s) utf16_utf8_strncpy((d), (s), SIZE_MAX)
*/
s32 utf_to_upper(const s32 code);
-/*
+/**
* u16_strncmp() - compare two u16 string
*
* @s1: first string to compare
* corresponding u16 in s2
*/
int u16_strncmp(const u16 *s1, const u16 *s2, size_t n);
+
+/**
+ * u16_strcmp() - compare two u16 string
+ *
+ * @s1: first string to compare
+ * @s2: second string to compare
+ * Return: 0 if the first n u16 are the same in s1 and s2
+ * < 0 if the first different u16 in s1 is less than the
+ * corresponding u16 in s2
+ * > 0 if the first different u16 in s1 is greater than the
+ * corresponding u16 in s2
+ */
#define u16_strcmp(s1, s2) u16_strncmp((s1), (s2), SIZE_MAX)
/**
- * u16_strlen - count non-zero words
+ * u16_strsize() - count size of u16 string in bytes including the null
+ * character
*
- * This function matches wsclen() if the -fshort-wchar compiler flag is set.
- * In the EFI context we explicitly need a function handling u16 strings.
+ * Counts the number of bytes occupied by a u16 string
*
* @in: null terminated u16 string
- * ReturnValue: number of non-zero words.
- * This is not the number of utf-16 letters!
+ * Return: bytes in a u16 string
*/
-size_t u16_strlen(const void *in);
+size_t u16_strsize(const void *in);
/**
- * u16_strlen - count non-zero words
+ * u16_strnlen() - count non-zero words
*
* This function matches wscnlen_s() if the -fshort-wchar compiler flag is set.
* In the EFI context we explicitly need a function handling u16 strings.
*
* @in: null terminated u16 string
* @count: maximum number of words to count
- * ReturnValue: number of non-zero words.
+ * Return: number of non-zero words.
* This is not the number of utf-16 letters!
*/
size_t u16_strnlen(const u16 *in, size_t count);
/**
+ * u16_strlen - count non-zero words
+ *
+ * This function matches wsclen() if the -fshort-wchar compiler flag is set.
+ * In the EFI context we explicitly need a function handling u16 strings.
+ *
+ * @in: null terminated u16 string
+ * Return: number of non-zero words.
+ * This is not the number of utf-16 letters!
+ */
+size_t u16_strlen(const void *in);
+
+#define u16_strlen(in) u16_strnlen(in, SIZE_MAX)
+
+/**
* u16_strcpy() - copy u16 string
*
* Copy u16 string pointed to by src, including terminating null word, to
u16 *u16_strdup(const void *src);
/**
+ * u16_strlcat() - Append a length-limited, %NUL-terminated string to another
+ *
+ * Append the source string @src to the destination string @dest, overwriting
+ * null word at the end of @dest adding a terminating null word.
+ *
+ * @dest: zero terminated u16 destination string
+ * @src: zero terminated u16 source string
+ * @count: size of buffer in u16 words including taling 0x0000
+ * Return: required size including trailing 0x0000 in u16 words
+ * If return value >= count, truncation occurred.
+ */
+size_t u16_strlcat(u16 *dest, const u16 *src, size_t count);
+
+/**
* utf16_to_utf8() - Convert an utf16 string to utf8
*
* Converts 'size' characters of the utf16 string 'src' to utf8
* NOTE that a single utf16 character can generate up to 3 utf8
* characters. See MAX_UTF8_PER_UTF16.
*
- * @dest the destination buffer to write the utf8 characters
- * @src the source utf16 string
- * @size the number of utf16 characters to convert
- * @return the pointer to the first unwritten byte in 'dest'
+ * @dest: the destination buffer to write the utf8 characters
+ * @src: the source utf16 string
+ * @size: the number of utf16 characters to convert
+ * Return: the pointer to the first unwritten byte in 'dest'
*/
uint8_t *utf16_to_utf8(uint8_t *dest, const uint16_t *src, size_t size);
+/**
+ * utf_to_cp() - translate Unicode code point to 8bit codepage
+ *
+ * Codepoints that do not exist in the codepage are rendered as question mark.
+ *
+ * @c: pointer to Unicode code point to be translated
+ * @codepage: Unicode to codepage translation table
+ * Return: 0 on success, -ENOENT if codepoint cannot be translated
+ */
+int utf_to_cp(s32 *c, const u16 *codepage);
+
+/**
+ * utf8_to_cp437_stream() - convert UTF-8 stream to codepage 437
+ *
+ * @c: next UTF-8 character to convert
+ * @buffer: buffer, at least 5 characters
+ * Return: next codepage 437 character or 0
+ */
+int utf8_to_cp437_stream(u8 c, char *buffer);
+
+/**
+ * utf8_to_utf32_stream() - convert UTF-8 stream to UTF-32
+ *
+ * @c: next UTF-8 character to convert
+ * @buffer: buffer, at least 5 characters
+ * Return: next codepage 437 character or 0
+ */
+int utf8_to_utf32_stream(u8 c, char *buffer);
+
#endif /* __CHARSET_H_ */
projects / platform / kernel / u-boot.git / blobdiff