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

/* SPDX-License-Identifier: LGPL-2.1+ */
/* gunicode.h - Unicode manipulation functions
 *
 *  Copyright (C) 1999, 2000 Tom Tromey
 *  Copyright © 2000, 2005 Red Hat, Inc.
 */
#pragma once

#include <stdbool.h>
#include <stdint.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
448e7440	1	/* SPDX-License-Identifier: LGPL-2.1+ */
f405e86d SL	2	/* gunicode.h - Unicode manipulation functions
	3	*
	4	* Copyright (C) 1999, 2000 Tom Tromey
96b2fb93	5	* Copyright © 2000, 2005 Red Hat, Inc.
f405e86d	6	*/
448e7440	7	#pragma once
f405e86d	8
f405e86d	9	#include <stdbool.h>
71d35b6b	10	#include <stdint.h>
f405e86d SL	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);