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systemd/src/shared/gunicode.h
Shawn Landden f405e86de3 util, utf8: make ellipsize take multi-byte characters into account
rename old versions to ascii_*

Do not take into account zerowidth characters, but do consider double-wide characters.
Import needed utf8 helper code from glib.

v3: rebase ontop of utf8 restructuring work

[zj: tweak the algorithm a bit, move new code to separate file]
2013-10-13 17:56:54 -04:00

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C

/* gunicode.h - Unicode manipulation functions
*
* Copyright (C) 1999, 2000 Tom Tromey
* Copyright 2000, 2005 Red Hat, Inc.
*/
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
char *utf8_prev_char (const char *p);
extern const char utf8_skip_data[256];
/**
* g_utf8_next_char:
* @p: Pointer to the start of a valid UTF-8 character
*
* Skips to the next character in a UTF-8 string. The string must be
* valid; this macro is as fast as possible, and has no error-checking.
* You would use this macro to iterate over a string character by
* character. The macro returns the start of the next UTF-8 character.
* Before using this macro, use g_utf8_validate() to validate strings
* that may contain invalid UTF-8.
*/
#define utf8_next_char(p) (char *)((p) + utf8_skip_data[*(const unsigned char *)(p)])
bool unichar_iswide (uint32_t c);