104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2003-2013, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: uarrsort.h
|
|
* encoding: UTF-8
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2003aug04
|
|
* created by: Markus W. Scherer
|
|
*
|
|
* Internal function for sorting arrays.
|
|
*/
|
|
|
|
#ifndef __UARRSORT_H__
|
|
#define __UARRSORT_H__
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
U_CDECL_BEGIN
|
|
/**
|
|
* Function type for comparing two items as part of sorting an array or similar.
|
|
* Callback function for uprv_sortArray().
|
|
*
|
|
* @param context Application-specific pointer, passed through by uprv_sortArray().
|
|
* @param left Pointer to the "left" item.
|
|
* @param right Pointer to the "right" item.
|
|
* @return 32-bit signed integer comparison result:
|
|
* <0 if left<right
|
|
* ==0 if left==right
|
|
* >0 if left>right
|
|
*
|
|
* @internal
|
|
*/
|
|
typedef int32_t U_CALLCONV
|
|
UComparator(const void *context, const void *left, const void *right);
|
|
U_CDECL_END
|
|
|
|
/**
|
|
* Array sorting function.
|
|
* Uses a UComparator for comparing array items to each other, and simple
|
|
* memory copying to move items.
|
|
*
|
|
* @param array The array to be sorted.
|
|
* @param length The number of items in the array.
|
|
* @param itemSize The size in bytes of each array item.
|
|
* @param cmp UComparator function used to compare two items each.
|
|
* @param context Application-specific pointer, passed through to the UComparator.
|
|
* @param sortStable If true, a stable sorting algorithm must be used.
|
|
* @param pErrorCode ICU in/out UErrorCode parameter.
|
|
*
|
|
* @internal
|
|
*/
|
|
U_CAPI void U_EXPORT2
|
|
uprv_sortArray(void *array, int32_t length, int32_t itemSize,
|
|
UComparator *cmp, const void *context,
|
|
UBool sortStable, UErrorCode *pErrorCode);
|
|
|
|
/**
|
|
* Convenience UComparator implementation for uint16_t arrays.
|
|
* @internal
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uprv_uint16Comparator(const void *context, const void *left, const void *right);
|
|
|
|
/**
|
|
* Convenience UComparator implementation for int32_t arrays.
|
|
* @internal
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uprv_int32Comparator(const void *context, const void *left, const void *right);
|
|
|
|
/**
|
|
* Convenience UComparator implementation for uint32_t arrays.
|
|
* @internal
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uprv_uint32Comparator(const void *context, const void *left, const void *right);
|
|
|
|
/**
|
|
* Much like Java Collections.binarySearch(list, key, comparator).
|
|
*
|
|
* Except: Java documents "If the list contains multiple elements equal to
|
|
* the specified object, there is no guarantee which one will be found."
|
|
*
|
|
* This version here will return the largest index of any equal item,
|
|
* for use in stable sorting.
|
|
*
|
|
* @return the index>=0 where the item was found:
|
|
* the largest such index, if multiple, for stable sorting;
|
|
* or the index<0 for inserting the item at ~index in sorted order
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
uprv_stableBinarySearch(char *array, int32_t length, void *item, int32_t itemSize,
|
|
UComparator *cmp, const void *context);
|
|
|
|
#endif
|