NAME

       m17nCharacter_-_Chara -  - Character objects and API for them.

SYNOPSIS

   Macros
       #define MCHAR_MAX
           Maximum character code.

   Functions
       MSymbol mchar_define_property (const char *name, MSymbol type)
           Define a character property.
       void * mchar_get_prop (int c, MSymbol key)
           Get the value of a character property.
       int mchar_put_prop (int c, MSymbol key, void *val)
           Set the value of a character property.
       MCharTable * mchar_get_prop_table (MSymbol key, MSymbol *type)
           Get the char-table for a character property.

   Variables: Keys of character properties
       These symbols are used as keys of character properties.

       MSymbol Mscript
           Key for script.
       MSymbol Mname
           Key for character name.
       MSymbol Mcategory
           Key for general category.
       MSymbol Mcombining_class
           Key for canonical combining class.
       MSymbol Mbidi_category
           Key for bidi category.
       MSymbol Msimple_case_folding
           Key for corresponding single lowercase character.
       MSymbol Mcomplicated_case_folding
           Key for corresponding multiple lowercase characters.
       MSymbol Mcased
           Key for values used in case operation.
       MSymbol Msoft_dotted
           Key for values used in case operation.
       MSymbol Mcase_mapping
           Key for values used in case operation.
       MSymbol Mblock
           Key for script block name.

Detailed Description

       Character objects and API for them.

       The m17n library represents a character by a character code (an integer). The minimum
       character code is 0. The maximum character code is defined by the macro MCHAR_MAX. It is
       assured that MCHAR_MAX is not smaller than 0x3FFFFF (22 bits).

       Characters 0 to 0x10FFFF are equivalent to the Unicode characters of the same code values.

       A character can have zero or more properties called character properties. A character
       property consists of a key and a value, where key is a symbol and value is anything that
       can be cast to (void *). 'The character property that belongs to character C and whose key
       is K' may be shortened to 'the K property of C'.

Macro Definition Documentation

   #define MCHAR_MAX
       Maximum character code. The macro MCHAR_MAX gives the maximum character code.

Variable Documentation

   MSymbol Mscript
       Key for script. The symbol Mscript has the name 'script' and is used as the key of a
       character property. The value of such a property is a symbol representing the script to
       which the character belongs.

       Each symbol that represents a script has one of the names listed in the Unicode Technical
       Report #24.

   MSymbol Mname
       Key for character name. The symbol Mname has the name 'name' and is used as the key of a
       character property. The value of such a property is a C-string representing the name of
       the character.

   MSymbol Mcategory
       Key for general category. The symbol Mcategory has the name 'category' and is used as the
       key of a character property. The value of such a property is a symbol representing the
       general category of the character.

       Each symbol that represents a general category has one of the names listed as
       abbreviations for General Category in Unicode.

   MSymbol Mcombining_class
       Key for canonical combining class. The symbol Mcombining_class has the name
       'combining-class' and is used as the key of a character property. The value of such a
       property is an integer that represents the canonical combining class of the character.

       The meaning of each integer that represents a canonical combining class is identical to
       the one defined in Unicode.

   MSymbol Mbidi_category
       Key for bidi category. The symbol Mbidi_category has the name 'bidi-category' and is used
       as the key of a character property. The value of such a property is a symbol that
       represents the bidirectional category of the character.

       Each symbol that represents a bidirectional category has one of the names listed as types
       of Bidirectional Category in Unicode.

   MSymbol Msimple_case_folding
       Key for corresponding single lowercase character. The symbol Msimple_case_folding has the
       name 'simple-case-folding' and is used as the key of a character property. The value of
       such a property is the corresponding single lowercase character that is used when
       comparing M-texts ignoring cases.

       If a character requires a complicated comparison (i.e. cannot be compared by simply
       mapping to another single character), the value of such a property is 0xFFFF. In this
       case, the character has another property whose key is Mcomplicated_case_folding.

   MSymbol Mcomplicated_case_folding
       Key for corresponding multiple lowercase characters. The symbol Mcomplicated_case_folding
       has the name 'complicated-case-folding' and is used as the key of a character property.
       The value of such a property is the corresponding M-text that contains a sequence of
       lowercase characters to be used for comparing M-texts ignoring case.

   MSymbol Mcased
       Key for values used in case operation. The symbol Mcased has the name 'cased' and is used
       as the key of charater property. The value of such a property is an integer value 1, 2, or
       3 representing 'cased', 'case-ignorable', and both of them respective. See the Unicode
       Standard 5.0 (Section 3.13 Default Case Algorithm) for the detail.

   MSymbol Msoft_dotted
       Key for values used in case operation. The symbol Msoft_dotted has the name 'soft-dotted'
       and is used as the key of charater property. The value of such a property is Mt if a
       character has 'Soft_Dotted' property, and Mnil otherwise. See the Unicode Standard 5.0
       (Section 3.13 Default Case Algorithm) for the detail.

   MSymbol Mcase_mapping
       Key for values used in case operation. The symbol Mcase_mapping has the name
       'case-mapping' and is used as the key of charater property. The value of such a property
       is a plist of three M-Texts; lower, title, and upper of the corresponding character. See
       the Unicode Standard 5.0 (Section 5.18 Case Mappings) for the detail.

   MSymbol Mblock
       Key for script block name. The symbol Mblock the name 'block' and is used as the key of
       charater property. The value of such a property is a symbol representing a script block of
       the corresponding character.

Author

       Generated automatically by Doxygen for The m17n Library from the source code.

COPYRIGHT

       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology
       (AIST)
       Permission is granted to copy, distribute and/or modify this document under the terms of
       the GNU Free Documentation License <http://www.gnu.org/licenses/fdl.html>.