[thirdparty/systemd.git] / src / basic / gunicode.h

/* gunicode.h - Unicode manipulation functions
 *
 *  Copyright (C) 1999, 2000 Tom Tromey
 *  Copyright 2000, 2005 Red Hat, Inc.
 */

#pragma once

#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);
Commit	Line	Data
f405e86d SL	1	/* gunicode.h - Unicode manipulation functions
	2	*
	3	* Copyright (C) 1999, 2000 Tom Tromey
	4	* Copyright 2000, 2005 Red Hat, Inc.
	5	*/
	6
c9403dce ZJS	7	#pragma once
c9403dce ZJS	8
f405e86d SL	9	#include <stdint.h>
	10	#include <stdbool.h>
	11	#include <stdlib.h>
	12
	13	char utf8_prev_char (const char p);
	14
	15	extern const char utf8_skip_data[256];
	16
	17	/**
	18	* g_utf8_next_char:
	19	* @p: Pointer to the start of a valid UTF-8 character
	20	*
	21	* Skips to the next character in a UTF-8 string. The string must be
	22	* valid; this macro is as fast as possible, and has no error-checking.
	23	* You would use this macro to iterate over a string character by
	24	* character. The macro returns the start of the next UTF-8 character.
	25	* Before using this macro, use g_utf8_validate() to validate strings
	26	* that may contain invalid UTF-8.
	27	*/
	28	#define utf8_next_char(p) (char )((p) + utf8_skip_data[(const unsigned char *)(p)])
	29
	30	bool unichar_iswide (uint32_t c);