X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fcharset.h;h=b93d0230923b83eca645188a6bdfe423bebfc179;hb=d2e5250be49fce4653689c41a5dc7e2d7e7ecf33;hp=65087f76d1fc386385055e7f922850f71ecf4b64;hpb=e35171e94efdd0fa6c63083a682d452a2403bea1;p=platform%2Fkernel%2Fu-boot.git diff --git a/include/charset.h b/include/charset.h index 65087f7..b93d023 100644 --- a/include/charset.h +++ b/include/charset.h @@ -13,6 +13,11 @@ #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 * @@ -46,18 +51,19 @@ int utf8_put(s32 code, char **dst); * * @src: utf-8 string * @count: maximum number of code points to convert - * Return: length in bytes after conversion to utf-16 without the + * Return: length in u16 after conversion to utf-16 without the * trailing \0. If an invalid UTF-8 sequence is hit one - * word will be reserved for a replacement character. + * u16 will be reserved for a replacement character. */ size_t utf8_utf16_strnlen(const char *src, size_t count); /** * utf8_utf16_strlen() - length of a utf-8 string after conversion to utf-16 * - * @src: utf-8 string - * Return: length in bytes after conversion to utf-16 without the - * trailing \0. -1 if the utf-8 string is not valid. + * @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. */ #define utf8_utf16_strlen(a) utf8_utf16_strnlen((a), SIZE_MAX) @@ -74,8 +80,8 @@ int utf8_utf16_strncpy(u16 **dst, const char *src, size_t count); /** * 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) @@ -125,9 +131,10 @@ size_t utf16_utf8_strnlen(const u16 *src, size_t count); /** * 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. -1 if the utf-16 string is not valid. + * trailing \0. If an invalid UTF-16 sequence is hit one + * byte will be reserved for a replacement character. */ #define utf16_utf8_strlen(a) utf16_utf8_strnlen((a), SIZE_MAX) @@ -144,8 +151,8 @@ int utf16_utf8_strncpy(char **dst, const u16 *src, size_t count); /** * 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) @@ -167,26 +174,64 @@ s32 utf_to_lower(const s32 code); s32 utf_to_upper(const s32 code); /** + * u16_strncmp() - compare two u16 string + * + * @s1: first string to compare + * @s2: second string to compare + * @n: maximum number of u16 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 + */ +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 * * 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 - * ReturnValue: number of non-zero words. + * Return: number of non-zero words. * This is not the number of utf-16 letters! */ -size_t u16_strlen(const u16 *in); +size_t u16_strlen(const void *in); /** - * u16_strlen - count non-zero words + * u16_strsize() - count size of u16 string in bytes including the null + * character + * + * Counts the number of bytes occupied by a u16 string + * + * @in: null terminated u16 string + * Return: bytes in a u16 string + */ +size_t u16_strsize(const void *in); + +/** + * 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); @@ -212,7 +257,7 @@ u16 *u16_strcpy(u16 *dest, const u16 *src); * @src: source buffer (null terminated) * Return: allocated new buffer on success, NULL on failure */ -u16 *u16_strdup(const u16 *src); +u16 *u16_strdup(const void *src); /** * utf16_to_utf8() - Convert an utf16 string to utf8 @@ -223,11 +268,40 @@ u16 *u16_strdup(const u16 *src); * 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_ */