332 lines
10 KiB
C
332 lines
10 KiB
C
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2002, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: uset.h
|
|
* encoding: US-ASCII
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2002mar07
|
|
* created by: Markus W. Scherer
|
|
*
|
|
* C version of UnicodeSet.
|
|
*/
|
|
|
|
#ifndef __USET_H__
|
|
#define __USET_H__
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
struct USet;
|
|
typedef struct USet USet;
|
|
|
|
enum {
|
|
USET_SERIALIZED_STATIC_ARRAY_CAPACITY=8 /**< enough for any single-code point set */
|
|
};
|
|
|
|
/**
|
|
* A serialized form of a Unicode set. Limited manipulations are
|
|
* possible directly on a serialized set. See below.
|
|
*/
|
|
struct USerializedSet {
|
|
const uint16_t *array;
|
|
int32_t bmpLength, length;
|
|
uint16_t staticArray[USET_SERIALIZED_STATIC_ARRAY_CAPACITY];
|
|
};
|
|
typedef struct USerializedSet USerializedSet;
|
|
|
|
|
|
/*********************************************************************
|
|
* USet API
|
|
*********************************************************************/
|
|
|
|
/**
|
|
* Creates a USet object that contains the range of characters
|
|
* start..end, inclusive.
|
|
* @param start first character of the range, inclusive
|
|
* @param end last character of the range, inclusive
|
|
* @return a newly created USet. The caller must call uset_close() on
|
|
* it when done.
|
|
*/
|
|
U_CAPI USet* U_EXPORT2
|
|
uset_open(UChar32 start, UChar32 end);
|
|
|
|
/**
|
|
* Creates a set from the given pattern. See the UnicodeSet class
|
|
* description for the syntax of the pattern language.
|
|
* @param pattern a string specifying what characters are in the set
|
|
* @param patternLength the length of the pattern, or -1 if null
|
|
* terminated
|
|
* @param ec the error code
|
|
*/
|
|
U_CAPI USet* U_EXPORT2
|
|
uset_openPattern(const UChar* pattern, int32_t patternLength,
|
|
UErrorCode* ec);
|
|
|
|
/**
|
|
* Disposes of the storage used by a USet object. This function should
|
|
* be called exactly once for objects returned by uset_open().
|
|
* @param set the object to dispose of
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_close(USet* set);
|
|
|
|
/**
|
|
* Returns a string representation of this set. If the result of
|
|
* calling this function is passed to a uset_openPattern(), it
|
|
* will produce another set that is equal to this one.
|
|
* @param set the set
|
|
* @param result the string to receive the rules, may be NULL
|
|
* @param resultCapacity the capacity of result, may be 0 if result is NULL
|
|
* @param escapeUnprintable if TRUE then convert unprintable
|
|
* character to their hex escape representations, \uxxxx or
|
|
* \Uxxxxxxxx. Unprintable characters are those other than
|
|
* U+000A, U+0020..U+007E.
|
|
* @param ec error code.
|
|
* @return length of string, possibly larger than resultCapacity
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uset_toPattern(const USet* set,
|
|
UChar* result, int32_t resultCapacity,
|
|
UBool escapeUnprintable,
|
|
UErrorCode* ec);
|
|
|
|
/**
|
|
* Adds the given character to the given USet. After this call,
|
|
* uset_contains(set, c) will return TRUE.
|
|
* @param set the object to which to add the character
|
|
* @param c the character to add
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_add(USet* set, UChar32 c);
|
|
|
|
/**
|
|
* Adds the given string to the given USet. After this call,
|
|
* uset_containsString(set, str, strLen) will return TRUE.
|
|
* @param set the object to which to add the character
|
|
* @param str the string to add
|
|
* @param strLen the length of the string or -1 if null terminated.
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_addString(USet* set, const UChar* str, int32_t strLen);
|
|
|
|
/**
|
|
* Removes the given character from the given USet. After this call,
|
|
* uset_contains(set, c) will return FALSE.
|
|
* @param set the object from which to remove the character
|
|
* @param c the character to remove
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_remove(USet* set, UChar32 c);
|
|
|
|
/**
|
|
* Removes the given string to the given USet. After this call,
|
|
* uset_containsString(set, str, strLen) will return FALSE.
|
|
* @param set the object to which to add the character
|
|
* @param str the string to remove
|
|
* @param strLen the length of the string or -1 if null terminated.
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_removeString(USet* set, const UChar* str, int32_t strLen);
|
|
|
|
/**
|
|
* Inverts this set. This operation modifies this set so that
|
|
* its value is its complement. This operation does not affect
|
|
* the multicharacter strings, if any.
|
|
* @param set the set
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_complement(USet* set);
|
|
|
|
/**
|
|
* Removes all of the elements from this set. This set will be
|
|
* empty after this call returns.
|
|
* @param set the set
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_clear(USet* set);
|
|
|
|
/**
|
|
* Returns TRUE if the given USet contains no characters and no
|
|
* strings.
|
|
* @param set the set
|
|
* @return true if set is empty
|
|
*/
|
|
U_CAPI UBool U_EXPORT2
|
|
uset_isEmpty(const USet* set);
|
|
|
|
/**
|
|
* Returns TRUE if the given USet contains the given character.
|
|
* @param set the set
|
|
* @return true if set contains c
|
|
*/
|
|
U_CAPI UBool U_EXPORT2
|
|
uset_contains(const USet* set, UChar32 c);
|
|
|
|
/**
|
|
* Returns TRUE if the given USet contains the given string.
|
|
* @param set the set
|
|
* @param str the string
|
|
* @param strLen the length of the string or -1 if null terminated.
|
|
* @return true if set contains str
|
|
*/
|
|
U_CAPI UBool U_EXPORT2
|
|
uset_containsString(const USet* set, const UChar* str, int32_t strLen);
|
|
|
|
/**
|
|
* Returns the number of characters and strings contained in the given
|
|
* USet.
|
|
* @param set the set
|
|
* @return a non-negative integer counting the characters and strings
|
|
* contained in set
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uset_size(const USet* set);
|
|
|
|
/**
|
|
* Returns the number of items in this set. An item is either a range
|
|
* of characters or a single multicharacter string.
|
|
* @param set the set
|
|
* @return a non-negative integer counting the character ranges
|
|
* and/or strings contained in set
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uset_getItemCount(const USet* set);
|
|
|
|
/**
|
|
* Returns an item of this set. An item is either a range of
|
|
* characters or a single multicharacter string.
|
|
* @param set the set
|
|
* @param itemIndex a non-negative integer in the range 0..
|
|
* uset_getItemCount(set)-1
|
|
* @param start pointer to variable to receive first character
|
|
* in range, inclusive
|
|
* @param end pointer to variable to receive last character in range,
|
|
* inclusive
|
|
* @param str buffer to receive the string, may be NULL
|
|
* @param strCapacity capacity of str, or 0 if str is NULL
|
|
* @param ec error code
|
|
* @return the length of the string (>= 2), or 0 if the item is a
|
|
* range, in which case it is the range *start..*end, or -1 if
|
|
* itemIndex is out of range
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uset_getItem(const USet* set, int32_t itemIndex,
|
|
UChar32* start, UChar32* end,
|
|
UChar* str, int32_t strCapacity,
|
|
UErrorCode* ec);
|
|
|
|
/*********************************************************************
|
|
* Serialized set API
|
|
*********************************************************************/
|
|
|
|
/**
|
|
* Serializes this set into an array of 16-bit integers. Serialization
|
|
* (currently) only records the characters in the set; multicharacter
|
|
* strings are ignored.
|
|
*
|
|
* The array
|
|
* has following format (each line is one 16-bit integer):
|
|
*
|
|
* length = (n+2*m) | (m!=0?0x8000:0)
|
|
* bmpLength = n; present if m!=0
|
|
* bmp[0]
|
|
* bmp[1]
|
|
* ...
|
|
* bmp[n-1]
|
|
* supp-high[0]
|
|
* supp-low[0]
|
|
* supp-high[1]
|
|
* supp-low[1]
|
|
* ...
|
|
* supp-high[m-1]
|
|
* supp-low[m-1]
|
|
*
|
|
* The array starts with a header. After the header are n bmp
|
|
* code points, then m supplementary code points. Either n or m
|
|
* or both may be zero. n+2*m is always <= 0x7FFF.
|
|
*
|
|
* If there are no supplementary characters (if m==0) then the
|
|
* header is one 16-bit integer, 'length', with value n.
|
|
*
|
|
* If there are supplementary characters (if m!=0) then the header
|
|
* is two 16-bit integers. The first, 'length', has value
|
|
* (n+2*m)|0x8000. The second, 'bmpLength', has value n.
|
|
*
|
|
* After the header the code points are stored in ascending order.
|
|
* Supplementary code points are stored as most significant 16
|
|
* bits followed by least significant 16 bits.
|
|
*
|
|
* @param set the set
|
|
* @param dest pointer to buffer of destCapacity 16-bit integers.
|
|
* May be NULL only if destCapacity is zero.
|
|
* @param destCapacity size of dest, or zero. Must not be negative.
|
|
* @param pErrorCode pointer to the error code. Will be set to
|
|
* U_INDEX_OUTOFBOUNDS_ERROR if n+2*m > 0x7FFF. Will be set to
|
|
* U_BUFFER_OVERFLOW_ERROR if n+2*m+(m!=0?2:1) > destCapacity.
|
|
* @return the total length of the serialized format, including
|
|
* the header, that is, n+2*m+(m!=0?2:1), or 0 on error other
|
|
* than U_BUFFER_OVERFLOW_ERROR.
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uset_serialize(const USet* set, uint16_t* dest, int32_t destCapacity, UErrorCode* pErrorCode);
|
|
|
|
/**
|
|
* Given a serialized array, fill in the given serialized set object.
|
|
* @param fillSet pointer to result
|
|
* @param src pointer to start of array
|
|
* @param srcLength length of array
|
|
* @return true if the given array is valid, otherwise false
|
|
*/
|
|
U_CAPI UBool U_EXPORT2
|
|
uset_getSerializedSet(USerializedSet* fillSet, const uint16_t* src, int32_t srcLength);
|
|
|
|
/**
|
|
* Set the USerializedSet to contain the given character (and nothing
|
|
* else).
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uset_setSerializedToOne(USerializedSet* fillSet, UChar32 c);
|
|
|
|
/**
|
|
* Returns TRUE if the given USerializedSet contains the given
|
|
* character.
|
|
* @param set the serialized set
|
|
* @return true if set contains c
|
|
*/
|
|
U_CAPI UBool U_EXPORT2
|
|
uset_serializedContains(const USerializedSet* set, UChar32 c);
|
|
|
|
/**
|
|
* Returns the number of disjoint ranges of characters contained in
|
|
* the given serialized set. Ignores any strings contained in the
|
|
* set.
|
|
* @param set the serialized set
|
|
* @return a non-negative integer counting the character ranges
|
|
* contained in set
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uset_getSerializedRangeCount(const USerializedSet* set);
|
|
|
|
/**
|
|
* Returns a range of characters contained in the given serialized
|
|
* set.
|
|
* @param set the serialized set
|
|
* @param rangeIndex a non-negative integer in the range 0..
|
|
* uset_getSerializedRangeCount(set)-1
|
|
* @param pStart pointer to variable to receive first character
|
|
* in range, inclusive
|
|
* @param pEnd pointer to variable to receive last character in range,
|
|
* inclusive
|
|
* @return true if rangeIndex is valid, otherwise false
|
|
*/
|
|
U_CAPI UBool U_EXPORT2
|
|
uset_getSerializedRange(const USerializedSet* set, int32_t rangeIndex,
|
|
UChar32* pStart, UChar32* pEnd);
|
|
|
|
#endif
|