CFCharacterSet.h

/*
 * Copyright (c) 2012 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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 */

/*	CFCharacterSet.h
	Copyright (c) 1999-2012, Apple Inc. All rights reserved.
*/

/*!
	@header CFCharacterSet
        CFCharacterSet represents a set, or a bag, of Unicode characters.
        The API consists of 3 groups:
        1) creation/manipulation of CFCharacterSet instances,
        2) query of a single Unicode character membership,
        and 3) bitmap representation related (reading/writing).
        Conceptually, CFCharacterSet is a 136K byte bitmap array of
        which each bit represents a Unicode code point.  It could
        contain the Unicode characters in ISO 10646 Basic Multilingual
        Plane (BMP) and characters in Plane 1 through Plane 16
        accessible via surrogate paris in the Unicode Transformation
        Format, 16-bit encoding form (UTF-16).  In other words, it can
        store values from 0x00000 to 0x10FFFF in the Unicode
        Transformation Format, 32-bit encoding form (UTF-32).  However,
        in general, how CFCharacterSet stores the information is an
        implementation detail.  Note even CFData used for the external
        bitmap representation rarely has 136K byte.  For detailed
        discussion of the external bitmap representation, refer to the
        comments for CFCharacterSetCreateWithBitmapRepresentation below.
        Note that the existance of non-BMP characters in a character set
        does not imply the membership of the corresponding surrogate
        characters.  For example, a character set with U+10000 does not
        match with U+D800.
*/

#if !defined(__COREFOUNDATION_CFCHARACTERSET__)
#define __COREFOUNDATION_CFCHARACTERSET__ 1

#include <CoreFoundation/CFBase.h>
#include <CoreFoundation/CFData.h>

CF_IMPLICIT_BRIDGING_ENABLED
CF_EXTERN_C_BEGIN

/*!
	@typedef CFCharacterSetRef
	This is the type of a reference to immutable CFCharacterSets.
*/
typedef const struct __CFCharacterSet * CFCharacterSetRef;

/*!
	@typedef CFMutableCharacterSetRef
	This is the type of a reference to mutable CFMutableCharacterSets.
*/
typedef struct __CFCharacterSet * CFMutableCharacterSetRef;

/*!
	@typedef CFCharacterSetPredefinedSet
        Type of the predefined CFCharacterSet selector values.
*/
   
typedef CF_ENUM(CFIndex, CFCharacterSetPredefinedSet) {
    kCFCharacterSetControl = 1, /* Control character set (Unicode General Category Cc and Cf) */
    kCFCharacterSetWhitespace, /* Whitespace character set (Unicode General Category Zs and U0009 CHARACTER TABULATION) */
    kCFCharacterSetWhitespaceAndNewline,  /* Whitespace and Newline character set (Unicode General Category Z*, U000A ~ U000D, and U0085) */
    kCFCharacterSetDecimalDigit, /* Decimal digit character set */
    kCFCharacterSetLetter, /* Letter character set (Unicode General Category L* & M*) */
    kCFCharacterSetLowercaseLetter, /* Lowercase character set (Unicode General Category Ll) */
    kCFCharacterSetUppercaseLetter, /* Uppercase character set (Unicode General Category Lu and Lt) */
    kCFCharacterSetNonBase, /* Non-base character set (Unicode General Category M*) */
    kCFCharacterSetDecomposable, /* Canonically decomposable character set */
    kCFCharacterSetAlphaNumeric, /* Alpha Numeric character set (Unicode General Category L*, M*, & N*) */
    kCFCharacterSetPunctuation, /* Punctuation character set (Unicode General Category P*) */
    kCFCharacterSetCapitalizedLetter = 13, /* Titlecase character set (Unicode General Category Lt) */
    kCFCharacterSetSymbol = 14, /* Symbol character set (Unicode General Category S*) */
    kCFCharacterSetNewline CF_ENUM_AVAILABLE(10_5, 2_0) = 15, /* Newline character set (U000A ~ U000D, U0085, U2028, and U2029) */
    kCFCharacterSetIllegal = 12/* Illegal character set */
};

/*!
	@function CFCharacterSetGetTypeID
	Returns the type identifier of all CFCharacterSet instances.
*/
CF_EXPORT
CFTypeID CFCharacterSetGetTypeID(void);

/*!
	@function CFCharacterSetGetPredefined
	Returns a predefined CFCharacterSet instance.
	@param theSetIdentifier The CFCharacterSetPredefinedSet selector
                which specifies the predefined character set.  If the
                value is not in CFCharacterSetPredefinedSet, the behavior
                is undefined.
	@result A reference to the predefined immutable CFCharacterSet.
                This instance is owned by CF.
*/
CF_EXPORT
CFCharacterSetRef CFCharacterSetGetPredefined(CFCharacterSetPredefinedSet theSetIdentifier);

/*!
	@function CFCharacterSetCreateWithCharactersInRange
	Creates a new immutable character set with the values from the given range.
	@param alloc The CFAllocator which should be used to allocate
		memory for the array and its storage for values. This
		parameter may be NULL in which case the current default
		CFAllocator is used. If this reference is not a valid
		CFAllocator, the behavior is undefined.
	@param theRange The CFRange which should be used to specify the
                Unicode range the character set is filled with.  It
                accepts the range in 32-bit in the UTF-32 format.  The
                valid character point range is from 0x00000 to 0x10FFFF.
                If the range is outside of the valid Unicode character
                point, the behavior is undefined.
	@result A reference to the new immutable CFCharacterSet.
*/
CF_EXPORT
CFCharacterSetRef CFCharacterSetCreateWithCharactersInRange(CFAllocatorRef alloc, CFRange theRange);

/*!
	@function CFCharacterSetCreateWithCharactersInString
	Creates a new immutable character set with the values in the given string.
	@param alloc The CFAllocator which should be used to allocate
		memory for the array and its storage for values. This
		parameter may be NULL in which case the current default
		CFAllocator is used. If this reference is not a valid
		CFAllocator, the behavior is undefined.
	@param theString The CFString which should be used to specify
                the Unicode characters the character set is filled with.
                If this parameter is not a valid CFString, the behavior
                is undefined.
        @result A reference to the new immutable CFCharacterSet.
*/
CF_EXPORT
CFCharacterSetRef CFCharacterSetCreateWithCharactersInString(CFAllocatorRef alloc, CFStringRef theString);

/*!
	@function CFCharacterSetCreateWithBitmapRepresentation
	Creates a new immutable character set with the bitmap representtion in the given data.
	@param alloc The CFAllocator which should be used to allocate
		memory for the array and its storage for values. This
		parameter may be NULL in which case the current default
		CFAllocator is used. If this reference is not a valid
		CFAllocator, the behavior is undefined.
	@param theData The CFData which should be used to specify the
                bitmap representation of the Unicode character points
                the character set is filled with.  The bitmap
                representation could contain all the Unicode character
                range starting from BMP to Plane 16.  The first 8192 bytes
                of the data represent the BMP range.  The BMP range 8192
                bytes can be followed by zero to sixteen 8192 byte
                bitmaps, each one with the plane index byte prepended.
                For example, the bitmap representing the BMP and Plane 2
                has the size of 16385 bytes (8192 bytes for BMP, 1 byte
                index + 8192 bytes bitmap for Plane 2).  The plane index
                byte, in this case, contains the integer value two.  If
                this parameter is not a valid CFData or it contains a
                Plane index byte outside of the valid Plane range
                (1 to 16), the behavior is undefined.
        @result A reference to the new immutable CFCharacterSet.
*/
CF_EXPORT
CFCharacterSetRef CFCharacterSetCreateWithBitmapRepresentation(CFAllocatorRef alloc, CFDataRef theData);

/*!
	@function CFCharacterSetCreateInvertedSet
	Creates a new immutable character set that is the invert of the specified character set.
	@param alloc The CFAllocator which should be used to allocate
			memory for the array and its storage for values. This
			parameter may be NULL in which case the current default
			CFAllocator is used. If this reference is not a valid
			CFAllocator, the behavior is undefined.
	@param theSet The CFCharacterSet which is to be inverted.  If this
                		parameter is not a valid CFCharacterSet, the behavior is
              		undefined.
	@result A reference to the new immutable CFCharacterSet.
*/
CF_EXPORT CFCharacterSetRef CFCharacterSetCreateInvertedSet(CFAllocatorRef alloc, CFCharacterSetRef theSet);

/*!
	@function CFCharacterSetIsSupersetOfSet
	Reports whether or not the character set is a superset of the character set specified as the second parameter.
	@param theSet  The character set to be checked for the membership of theOtherSet.
		If this parameter is not a valid CFCharacterSet, the behavior is undefined.
	@param theOtherset  The character set to be checked whether or not it is a subset of theSet.
		If this parameter is not a valid CFCharacterSet, the behavior is undefined.
*/
CF_EXPORT Boolean CFCharacterSetIsSupersetOfSet(CFCharacterSetRef theSet, CFCharacterSetRef theOtherset);

/*!
	@function CFCharacterSetHasMemberInPlane
	Reports whether or not the character set contains at least one member character in the specified plane.
	@param theSet  The character set to be checked for the membership.  If this
		parameter is not a valid CFCharacterSet, the behavior is undefined.
	@param thePlane  The plane number to be checked for the membership.
		The valid value range is from 0 to 16.  If the value is outside of the valid
		plane number range, the behavior is undefined.
*/
CF_EXPORT Boolean CFCharacterSetHasMemberInPlane(CFCharacterSetRef theSet, CFIndex thePlane);

/*!
	@function CFCharacterSetCreateMutable
	Creates a new empty mutable character set.
	@param allocator The CFAllocator which should be used to allocate
		memory for the array and its storage for values. This
		parameter may be NULL in which case the current default
		CFAllocator is used. If this reference is not a valid
		CFAllocator, the behavior is undefined.
	@result A reference to the new mutable CFCharacterSet.
*/
CF_EXPORT
CFMutableCharacterSetRef CFCharacterSetCreateMutable(CFAllocatorRef alloc);

/*!
	@function CFCharacterSetCreateCopy
	Creates a new character set with the values from the given character set.  This function tries to compact the backing store where applicable.
	@param allocator The CFAllocator which should be used to allocate
		memory for the array and its storage for values. This
		parameter may be NULL in which case the current default
		CFAllocator is used. If this reference is not a valid
		CFAllocator, the behavior is undefined.
	@param theSet The CFCharacterSet which is to be copied.  If this
                parameter is not a valid CFCharacterSet, the behavior is
                undefined.
	@result A reference to the new CFCharacterSet.
*/
CF_EXPORT
CFCharacterSetRef CFCharacterSetCreateCopy(CFAllocatorRef alloc, CFCharacterSetRef theSet);

/*!
	@function CFCharacterSetCreateMutableCopy
	Creates a new mutable character set with the values from the given character set.
	@param allocator The CFAllocator which should be used to allocate
		memory for the array and its storage for values. This
		parameter may be NULL in which case the current default
		CFAllocator is used. If this reference is not a valid
		CFAllocator, the behavior is undefined.
	@param theSet The CFCharacterSet which is to be copied.  If this
                parameter is not a valid CFCharacterSet, the behavior is
                undefined.
	@result A reference to the new mutable CFCharacterSet.
*/
CF_EXPORT
CFMutableCharacterSetRef CFCharacterSetCreateMutableCopy(CFAllocatorRef alloc, CFCharacterSetRef theSet);

/*!
	@function CFCharacterSetIsCharacterMember
	Reports whether or not the Unicode character is in the character set.
	@param theSet The character set to be searched. If this parameter
                is not a valid CFCharacterSet, the behavior is undefined.
	@param theChar The Unicode character for which to test against the
                character set.  Note that this function takes 16-bit Unicode
                character value; hence, it does not support access to the
                non-BMP planes.  
        @result true, if the value is in the character set, otherwise false.
*/
CF_EXPORT
Boolean CFCharacterSetIsCharacterMember(CFCharacterSetRef theSet, UniChar theChar);

/*!
	@function CFCharacterSetIsLongCharacterMember
	Reports whether or not the UTF-32 character is in the character set.
	@param theSet The character set to be searched. If this parameter
               		 is not a valid CFCharacterSet, the behavior is undefined.
	@param theChar The UTF-32 character for which to test against the
			character set.
        @result true, if the value is in the character set, otherwise false.
*/
CF_EXPORT Boolean CFCharacterSetIsLongCharacterMember(CFCharacterSetRef theSet, UTF32Char theChar);

/*!
	@function CFCharacterSetCreateBitmapRepresentation
	Creates a new immutable data with the bitmap representation from the given character set.
	@param allocator The CFAllocator which should be used to allocate
		memory for the array and its storage for values. This
		parameter may be NULL in which case the current default
		CFAllocator is used. If this reference is not a valid
		CFAllocator, the behavior is undefined.
	@param theSet The CFCharacterSet which is to be used create the
                bitmap representation from.  Refer to the comments for
                CFCharacterSetCreateWithBitmapRepresentation for the
                detailed discussion of the bitmap representation format.
                If this parameter is not a valid CFCharacterSet, the
                behavior is undefined.
	@result A reference to the new immutable CFData.
*/
CF_EXPORT
CFDataRef CFCharacterSetCreateBitmapRepresentation(CFAllocatorRef alloc, CFCharacterSetRef theSet);

/*!
	@function CFCharacterSetAddCharactersInRange
	Adds the given range to the charaacter set.
	@param theSet The character set to which the range is to be added.
                If this parameter is not a valid mutable CFCharacterSet,
                the behavior is undefined.
        @param theRange The range to add to the character set.  It accepts
                the range in 32-bit in the UTF-32 format.  The valid
                character point range is from 0x00000 to 0x10FFFF.  If the
                range is outside of the valid Unicode character point,
                the behavior is undefined.
*/
CF_EXPORT
void CFCharacterSetAddCharactersInRange(CFMutableCharacterSetRef theSet, CFRange theRange);

/*!
	@function CFCharacterSetRemoveCharactersInRange
	Removes the given range from the charaacter set.
	@param theSet The character set from which the range is to be
                removed.  If this parameter is not a valid mutable
                CFCharacterSet, the behavior is undefined.
        @param theRange The range to remove from the character set.
                It accepts the range in 32-bit in the UTF-32 format.
                The valid character point range is from 0x00000 to 0x10FFFF.
                If the range is outside of the valid Unicode character point,
                the behavior is undefined.
*/
CF_EXPORT
void CFCharacterSetRemoveCharactersInRange(CFMutableCharacterSetRef theSet, CFRange theRange);

/*!
	@function CFCharacterSetAddCharactersInString
	Adds the characters in the given string to the charaacter set.
	@param theSet The character set to which the characters in the
                string are to be added.  If this parameter is not a
                valid mutable CFCharacterSet, the behavior is undefined.
        @param theString The string to add to the character set.
                If this parameter is not a valid CFString, the behavior
                is undefined.
*/
CF_EXPORT
void CFCharacterSetAddCharactersInString(CFMutableCharacterSetRef theSet,  CFStringRef theString);

/*!
	@function CFCharacterSetRemoveCharactersInString
	Removes the characters in the given string from the charaacter set.
	@param theSet The character set from which the characters in the
                string are to be remove.  If this parameter is not a
                valid mutable CFCharacterSet, the behavior is undefined.
        @param theString The string to remove from the character set.
                If this parameter is not a valid CFString, the behavior
                is undefined.
*/
CF_EXPORT
void CFCharacterSetRemoveCharactersInString(CFMutableCharacterSetRef theSet, CFStringRef theString);

/*!
	@function CFCharacterSetUnion
	Forms the union with the given character set.
	@param theSet The destination character set into which the
                union of the two character sets is stored.  If this
                parameter is not a valid mutable CFCharacterSet, the
                behavior is undefined.
	@param theOtherSet The character set with which the union is
                formed.  If this parameter is not a valid CFCharacterSet,
                the behavior is undefined.
*/
CF_EXPORT
void CFCharacterSetUnion(CFMutableCharacterSetRef theSet, CFCharacterSetRef theOtherSet);

/*!
	@function CFCharacterSetIntersect
	Forms the intersection with the given character set.
	@param theSet The destination character set into which the
                intersection of the two character sets is stored.
                If this parameter is not a valid mutable CFCharacterSet,
                the behavior is undefined.
	@param theOtherSet The character set with which the intersection
                is formed.  If this parameter is not a valid CFCharacterSet,
                the behavior is undefined.
*/
CF_EXPORT
void CFCharacterSetIntersect(CFMutableCharacterSetRef theSet, CFCharacterSetRef theOtherSet);

/*!
	@function CFCharacterSetInvert
	Inverts the content of the given character set.
	@param theSet The character set to be inverted.
                If this parameter is not a valid mutable CFCharacterSet,
                the behavior is undefined.
*/
CF_EXPORT
void CFCharacterSetInvert(CFMutableCharacterSetRef theSet);

CF_EXTERN_C_END
CF_IMPLICIT_BRIDGING_DISABLED

#endif /* ! __COREFOUNDATION_CFCHARACTERSET__ */