blender-archive/source/blender/blenlib/BLI_string_utf8.h

/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef __BLI_STRING_UTF8_H__
#define __BLI_STRING_UTF8_H__

/** \file BLI_string_utf8.h
 *  \ingroup bli
 */

#ifdef __cplusplus
extern "C" {
#endif

#ifdef __GNUC__
#  define ATTR_NONULL __attribute__((nonnull))
#  define ATTR_NONULL_FIRST  __attribute__((nonnull(1)))
#  define ATTR_UNUSED_RESULT __attribute__((warn_unused_result))
#else
#  define ATTR_NONULL
#  define ATTR_NONULL_FIRST
#  define ATTR_UNUSED_RESULT
#endif

char        *BLI_strncpy_utf8(char *__restrict dst, const char *__restrict src, size_t maxncpy)  ATTR_NONULL;
char        *BLI_strncat_utf8(char *__restrict dst, const char *__restrict src, size_t maxncpy)  ATTR_NONULL;
int          BLI_utf8_invalid_byte(const char *str, int length)  ATTR_NONULL;
int          BLI_utf8_invalid_strip(char *str, int length)  ATTR_NONULL;

int          BLI_str_utf8_size(const char *p)  ATTR_NONULL; /* warning, can return -1 on bad chars */
int          BLI_str_utf8_size_safe(const char *p)  ATTR_NONULL;
/* copied from glib */
unsigned int BLI_str_utf8_as_unicode(const char *p)  ATTR_NONULL;
unsigned int BLI_str_utf8_as_unicode_and_size(const char *__restrict p, size_t *__restrict index)  ATTR_NONULL;
unsigned int BLI_str_utf8_as_unicode_and_size_safe(const char *__restrict p, size_t *__restrict index)  ATTR_NONULL;
unsigned int BLI_str_utf8_as_unicode_step(const char *__restrict p, size_t *__restrict index)  ATTR_NONULL;
size_t       BLI_str_utf8_from_unicode(unsigned int c, char *outbuf);

char        *BLI_str_find_prev_char_utf8(const char *str, const char *p)  ATTR_NONULL;
char        *BLI_str_find_next_char_utf8(const char *p, const char *end)  ATTR_NONULL_FIRST;
char        *BLI_str_prev_char_utf8(const char *p)  ATTR_NONULL;

/* wchar_t functions, copied from blenders own font.c originally */
size_t       BLI_wstrlen_utf8(const wchar_t *src)  ATTR_NONULL;
size_t       BLI_strlen_utf8_ex(const char *strc, size_t *r_len_bytes)  ATTR_NONULL;
size_t       BLI_strlen_utf8(const char *strc)  ATTR_NONULL;
size_t       BLI_strnlen_utf8_ex(const char *strc, const size_t maxlen, size_t *r_len_bytes)  ATTR_NONULL;
size_t       BLI_strnlen_utf8(const char *strc, const size_t maxlen)  ATTR_NONULL;
size_t       BLI_strncpy_wchar_as_utf8(char *__restrict dst, const wchar_t *__restrict src, const size_t maxcpy)  ATTR_NONULL;
size_t       BLI_strncpy_wchar_from_utf8(wchar_t *__restrict dst, const char *__restrict src, const size_t maxcpy)  ATTR_NONULL;

/* count columns that character/string occupies, based on wcwidth.c */
int          BLI_wcwidth(wchar_t ucs);
int          BLI_wcswidth(const wchar_t *pwcs, size_t n)  ATTR_NONULL;
int          BLI_str_utf8_char_width(const char *p)  ATTR_NONULL; /* warning, can return -1 on bad chars */
int          BLI_str_utf8_char_width_safe(const char *p)  ATTR_NONULL;

#define      BLI_UTF8_MAX 6        /* mem */
#define      BLI_UTF8_WIDTH_MAX 2  /* columns */
#define      BLI_UTF8_ERR ((unsigned int)-1)

#undef ATTR_NONULL
#undef ATTR_NONULL_FIRST
#undef ATTR_UNUSED_RESULT

#ifdef __cplusplus
}
#endif

#endif