caca_charset - Online Linux Manual PageSection : 3caca
Updated : Tue Jan 26 2021
Source : Version 0.99.beta19
Note : libcaca

NAMEcaca_charset − libcaca character set conversions

SYNOPSIS

Moduleslibcaca 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​.

Detailed DescriptionThese functions perform conversions between usual character sets​.

Function Documentation

__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 s A string containing the UTF-8 character​.
bytes A pointer to a size_t to store the number of bytes in the character, or NULL​.
Returns The corresponding UTF-32 character, or zero if the character is incomplete​. 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 buf A pointer to a character buffer where the UTF-8 sequence will be written​.
ch The UTF-32 character​.
Returns The number of bytes written​.

__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 ch The UTF-32 character​. Returns The corresponding CP437 character, or '?' if not representable​.

__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 ch The CP437 character​. Returns The corresponding UTF-32 character, or zero if not representable​.

__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 ch The UTF-32 character​. Returns The corresponding ASCII character, or a graphically close equivalent if found, or '?' if not representable​.

__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 ch The UTF-32 character​. Returns 1 if the character is fullwidth, 0 otherwise​. Referenced by caca_put_char(), and caca_put_str()​.

AuthorGenerated automatically by Doxygen for libcaca from the source code​.
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Johanes Gumabo
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