/* gunicode.h - Unicode manipulation functions

 *

 *  Copyright (C) 1999, 2000 Tom Tromey

 *  Copyright 2000, 2005 Red Hat, Inc.

 * Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 *

 * The Gnome Library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public License as

 * published by the Free Software Foundation; either version 2 of the

 * License, or (at your option) any later version.

 *

 * The Gnome Library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with the Gnome Library; see the file COPYING.LIB.  If not,

 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 *   Boston, MA 02111-1307, USA.

 */

#ifndef __G_UNICODE_H__

#define __G_UNICODE_H__

#include <_ansi.h>

#include <glib/gerror.h>

#include <glib/gtypes.h>

G_BEGIN_DECLS

typedef guint32 gunichar;

typedef guint16 gunichar2;

/* These are the possible character classifications.

 * See http://www.unicode.org/Public/UNIDATA/UCD.html#General_Category_Values

 */

typedef enum

{

  G_UNICODE_CONTROL,

  G_UNICODE_FORMAT,

  G_UNICODE_UNASSIGNED,

  G_UNICODE_PRIVATE_USE,

  G_UNICODE_SURROGATE,

  G_UNICODE_LOWERCASE_LETTER,

  G_UNICODE_MODIFIER_LETTER,

  G_UNICODE_OTHER_LETTER,

  G_UNICODE_TITLECASE_LETTER,

  G_UNICODE_UPPERCASE_LETTER,

  G_UNICODE_COMBINING_MARK,

  G_UNICODE_ENCLOSING_MARK,

  G_UNICODE_NON_SPACING_MARK,

  G_UNICODE_DECIMAL_NUMBER,

  G_UNICODE_LETTER_NUMBER,

  G_UNICODE_OTHER_NUMBER,

  G_UNICODE_CONNECT_PUNCTUATION,

  G_UNICODE_DASH_PUNCTUATION,

  G_UNICODE_CLOSE_PUNCTUATION,

  G_UNICODE_FINAL_PUNCTUATION,

  G_UNICODE_INITIAL_PUNCTUATION,

  G_UNICODE_OTHER_PUNCTUATION,

  G_UNICODE_OPEN_PUNCTUATION,

  G_UNICODE_CURRENCY_SYMBOL,

  G_UNICODE_MODIFIER_SYMBOL,

  G_UNICODE_MATH_SYMBOL,

  G_UNICODE_OTHER_SYMBOL,

  G_UNICODE_LINE_SEPARATOR,

  G_UNICODE_PARAGRAPH_SEPARATOR,

  G_UNICODE_SPACE_SEPARATOR

} GUnicodeType;

/* These are the possible line break classifications.

 * Note that new types may be added in the future.

 * Implementations may regard unknown values like G_UNICODE_BREAK_UNKNOWN

 * See http://www.unicode.org/unicode/reports/tr14/

 */

typedef enum

{

  G_UNICODE_BREAK_MANDATORY,

  G_UNICODE_BREAK_CARRIAGE_RETURN,

  G_UNICODE_BREAK_LINE_FEED,

  G_UNICODE_BREAK_COMBINING_MARK,

  G_UNICODE_BREAK_SURROGATE,

  G_UNICODE_BREAK_ZERO_WIDTH_SPACE,

  G_UNICODE_BREAK_INSEPARABLE,

  G_UNICODE_BREAK_NON_BREAKING_GLUE,

  G_UNICODE_BREAK_CONTINGENT,

  G_UNICODE_BREAK_SPACE,

  G_UNICODE_BREAK_AFTER,

  G_UNICODE_BREAK_BEFORE,

  G_UNICODE_BREAK_BEFORE_AND_AFTER,

  G_UNICODE_BREAK_HYPHEN,

  G_UNICODE_BREAK_NON_STARTER,

  G_UNICODE_BREAK_OPEN_PUNCTUATION,

  G_UNICODE_BREAK_CLOSE_PUNCTUATION,

  G_UNICODE_BREAK_QUOTATION,

  G_UNICODE_BREAK_EXCLAMATION,

  G_UNICODE_BREAK_IDEOGRAPHIC,

  G_UNICODE_BREAK_NUMERIC,

  G_UNICODE_BREAK_INFIX_SEPARATOR,

  G_UNICODE_BREAK_SYMBOL,

  G_UNICODE_BREAK_ALPHABETIC,

  G_UNICODE_BREAK_PREFIX,

  G_UNICODE_BREAK_POSTFIX,

  G_UNICODE_BREAK_COMPLEX_CONTEXT,

  G_UNICODE_BREAK_AMBIGUOUS,

  G_UNICODE_BREAK_UNKNOWN,

  G_UNICODE_BREAK_NEXT_LINE,

  G_UNICODE_BREAK_WORD_JOINER,

  G_UNICODE_BREAK_HANGUL_L_JAMO,

  G_UNICODE_BREAK_HANGUL_V_JAMO,

  G_UNICODE_BREAK_HANGUL_T_JAMO,

  G_UNICODE_BREAK_HANGUL_LV_SYLLABLE,

  G_UNICODE_BREAK_HANGUL_LVT_SYLLABLE

} GUnicodeBreakType;

/* Returns TRUE if current locale uses UTF-8 charset.  If CHARSET is

 * not null, sets *CHARSET to the name of the current locale's

 * charset.  This value is statically allocated, and should be copied

 * in case the locale's charset will be changed later using setlocale()

 * or in some other way.

 */

IMPORT_C gboolean g_get_charset (G_CONST_RETURN char **charset);

/* These are all analogs of the <ctype.h> functions.

 */

IMPORT_C gboolean g_unichar_isalnum   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isalpha   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_iscntrl   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isdigit   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isgraph   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_islower   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isprint   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_ispunct   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isspace   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isupper   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isxdigit  (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_istitle   (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_isdefined (gunichar c) G_GNUC_CONST;

IMPORT_C gboolean g_unichar_iswide    (gunichar c) G_GNUC_CONST;

/* More <ctype.h> functions.  These convert between the three cases.

 * See the Unicode book to understand title case.  */

IMPORT_C gunichar g_unichar_toupper (gunichar c) G_GNUC_CONST;

IMPORT_C gunichar g_unichar_tolower (gunichar c) G_GNUC_CONST;

IMPORT_C gunichar g_unichar_totitle (gunichar c) G_GNUC_CONST;

/* If C is a digit (according to `g_unichar_isdigit'), then return its

   numeric value.  Otherwise return -1.  */

IMPORT_C gint g_unichar_digit_value (gunichar c) G_GNUC_CONST;

IMPORT_C gint g_unichar_xdigit_value (gunichar c) G_GNUC_CONST;

/* Return the Unicode character type of a given character.  */

IMPORT_C GUnicodeType g_unichar_type (gunichar c) G_GNUC_CONST;

/* Return the line break property for a given character */

IMPORT_C GUnicodeBreakType g_unichar_break_type (gunichar c) G_GNUC_CONST;

/* Compute canonical ordering of a string in-place.  This rearranges

   decomposed characters in the string according to their combining

   classes.  See the Unicode manual for more information.  */

IMPORT_C void g_unicode_canonical_ordering (gunichar *string,

				   gsize     len);

/* Compute canonical decomposition of a character.  Returns g_malloc()d

   string of Unicode characters.  RESULT_LEN is set to the resulting

   length of the string.  */

IMPORT_C gunichar *g_unicode_canonical_decomposition (gunichar  ch,

					     gsize    *result_len) G_GNUC_MALLOC;

/* Array of skip-bytes-per-initial character.

 */

#ifdef __SYMBIAN32__

IMPORT_C const gchar * const * _g_utf8_skip();

#endif /* __SYMBIAN32__ */

GLIB_VAR const gchar * const g_utf8_skip;

#define g_utf8_next_char(p) (char *)((p) + g_utf8_skip[*(guchar *)(p)])

IMPORT_C gunichar g_utf8_get_char           (const gchar  *p);

IMPORT_C gunichar g_utf8_get_char_validated (const  gchar *p,

				    gssize        max_len);

IMPORT_C gchar*   g_utf8_offset_to_pointer (const gchar *str,

                                   glong        offset);  

IMPORT_C glong    g_utf8_pointer_to_offset (const gchar *str,      

				   const gchar *pos);

IMPORT_C gchar*   g_utf8_prev_char         (const gchar *p);

IMPORT_C gchar*   g_utf8_find_next_char    (const gchar *p,

				   const gchar *end);

IMPORT_C gchar*   g_utf8_find_prev_char    (const gchar *str,

				   const gchar *p);

IMPORT_C glong g_utf8_strlen (const gchar *p,  

		     gssize       max);        

/* Copies n characters from src to dest */

IMPORT_C gchar* g_utf8_strncpy (gchar       *dest,

		       const gchar *src,

		       gsize        n);

/* Find the UTF-8 character corresponding to ch, in string p. These

   functions are equivalants to strchr and strrchr */

IMPORT_C gchar* g_utf8_strchr  (const gchar *p,

		       gssize       len,

		       gunichar     c);

IMPORT_C gchar* g_utf8_strrchr (const gchar *p,

		       gssize       len,

		       gunichar     c);

IMPORT_C gchar* g_utf8_strreverse (const gchar *str,

			  gssize len);

IMPORT_C gunichar2 *g_utf8_to_utf16     (const gchar      *str,

				glong             len,            

				glong            *items_read,     

				glong            *items_written,  

				GError          **error) G_GNUC_MALLOC;

IMPORT_C gunichar * g_utf8_to_ucs4      (const gchar      *str,

				glong             len,            

				glong            *items_read,     

				glong            *items_written,  

				GError          **error) G_GNUC_MALLOC;

IMPORT_C gunichar * g_utf8_to_ucs4_fast (const gchar      *str,

				glong             len,            

				glong            *items_written) G_GNUC_MALLOC; 

IMPORT_C gunichar * g_utf16_to_ucs4     (const gunichar2  *str,

				glong             len,            

				glong            *items_read,     

				glong            *items_written,  

				GError          **error) G_GNUC_MALLOC;

IMPORT_C gchar*     g_utf16_to_utf8     (const gunichar2  *str,

				glong             len,            

				glong            *items_read,     

				glong            *items_written,  

				GError          **error) G_GNUC_MALLOC;

IMPORT_C gunichar2 *g_ucs4_to_utf16     (const gunichar   *str,

				glong             len,            

				glong            *items_read,     

				glong            *items_written,  

				GError          **error) G_GNUC_MALLOC;

IMPORT_C gchar*     g_ucs4_to_utf8      (const gunichar   *str,

				glong             len,            

				glong            *items_read,     

				glong            *items_written,  

				GError          **error) G_GNUC_MALLOC;

/* Convert a single character into UTF-8. outbuf must have at

 * least 6 bytes of space. Returns the number of bytes in the

 * result.

 */

IMPORT_C gint      g_unichar_to_utf8 (gunichar    c,

			     gchar      *outbuf);

/* Validate a UTF8 string, return TRUE if valid, put pointer to

 * first invalid char in **end

 */

IMPORT_C gboolean g_utf8_validate (const gchar  *str,

                          gssize        max_len,  

                          const gchar **end);

/* Validate a Unicode character */

IMPORT_C gboolean g_unichar_validate (gunichar ch);

IMPORT_C gchar *g_utf8_strup   (const gchar *str,

		       gssize       len) G_GNUC_MALLOC;

IMPORT_C gchar *g_utf8_strdown (const gchar *str,

		       gssize       len) G_GNUC_MALLOC;

IMPORT_C gchar *g_utf8_casefold (const gchar *str,

			gssize       len) G_GNUC_MALLOC;

typedef enum {

  G_NORMALIZE_DEFAULT,

  G_NORMALIZE_NFD = G_NORMALIZE_DEFAULT,

  G_NORMALIZE_DEFAULT_COMPOSE,

  G_NORMALIZE_NFC = G_NORMALIZE_DEFAULT_COMPOSE,

  G_NORMALIZE_ALL,

  G_NORMALIZE_NFKD = G_NORMALIZE_ALL,

  G_NORMALIZE_ALL_COMPOSE,

  G_NORMALIZE_NFKC = G_NORMALIZE_ALL_COMPOSE

} GNormalizeMode;

IMPORT_C gchar *g_utf8_normalize (const gchar   *str,

			 gssize         len,

			 GNormalizeMode mode) G_GNUC_MALLOC;

IMPORT_C gint   g_utf8_collate     (const gchar *str1,

			   const gchar *str2);

IMPORT_C gchar *g_utf8_collate_key (const gchar *str,

			   gssize       len) G_GNUC_MALLOC;

IMPORT_C gchar *g_utf8_collate_key_for_filename (const gchar *str,

			                gssize       len) G_GNUC_MALLOC;

IMPORT_C gboolean g_unichar_get_mirror_char (gunichar ch,

                                    gunichar *mirrored_ch);

G_END_DECLS

#endif /* __G_UNICODE_H__ */