Topics¶

libcaca primitives drawing

Functions¶

__extern uint32_t caca_utf8_to_utf32 (char const *, size_t *)
Convert a UTF-8 character to UTF-32. __extern size_t caca_utf32_to_utf8 (char *, uint32_t)
Convert a UTF-32 character to UTF-8. __extern uint8_t caca_utf32_to_cp437 (uint32_t)
Convert a UTF-32 character to CP437. __extern uint32_t caca_cp437_to_utf32 (uint8_t)
Convert a CP437 character to UTF-32. __extern char caca_utf32_to_ascii (uint32_t)
Convert a UTF-32 character to ASCII. __extern int caca_utf32_is_fullwidth (uint32_t)
Tell whether a UTF-32 character is fullwidth.

__extern uint32_t caca_utf8_to_utf32 (char const * s, size_t * bytes)¶

Convert a UTF-8 character read from a string and return its value in the UTF-32 character set. If the second argument is not null, the total number of read bytes is written in it.

If a null byte was reached before the expected end of the UTF-8 sequence, this function returns zero and the number of read bytes is set to zero.

This function never fails, but its behaviour with illegal UTF-8 sequences is undefined.

Parameters

Returns

Referenced by caca_put_str().

__extern size_t caca_utf32_to_utf8 (char * buf, uint32_t ch)¶

Convert a UTF-32 character read from a string and write its value in the UTF-8 character set into the given buffer.

This function never fails, but its behaviour with illegal UTF-32 characters is undefined.

Parameters

Returns

__extern uint8_t caca_utf32_to_cp437 (uint32_t ch)¶

Convert a UTF-32 character read from a string and return its value in the CP437 character set, or '?' if the character has no equivalent.

This function never fails.

Parameters

Returns

__extern uint32_t caca_cp437_to_utf32 (uint8_t ch)¶

Convert a CP437 character read from a string and return its value in the UTF-32 character set, or zero if the character is a CP437 control character.

This function never fails.

Parameters

Returns

__extern char caca_utf32_to_ascii (uint32_t ch)¶

Convert a UTF-32 character into an ASCII character. When no equivalent exists, a graphically close equivalent is sought.

This function never fails, but its behaviour with illegal UTF-32 characters is undefined.

Parameters

Returns

__extern int caca_utf32_is_fullwidth (uint32_t ch)¶

Check whether the given UTF-32 character should be printed at twice the normal width (fullwidth characters). If the character is unknown or if its status cannot be decided, it is treated as a standard-width character.

This function never fails.

Parameters

Returns

Referenced by caca_put_char(), and caca_put_str().