The Tor Browser: intl/icu/source/i18n/ucol

     1 /*

     2 *******************************************************************************

3 *

     4 *   Copyright (C) 1999-2008, International Business Machines

     5 *   Corporation and others.  All Rights Reserved.

6 *

     7 *******************************************************************************

     8 *   file name:  ucol_wgt.h

     9 *   encoding:   US-ASCII

    10 *   tab size:   8 (not used)

    11 *   indentation:4

    12 *

    13 *   created on: 2001mar08

    14 *   created by: Markus W. Scherer

    15 */

    17 #ifndef UCOL_WGT_H

    18 #define UCOL_WGT_H

    20 #include "unicode/utypes.h"

    22 #if !UCONFIG_NO_COLLATION

    24 /* definitions for CE weights */

    26 typedef struct WeightRange {

    27     uint32_t start, end;

    28     int32_t length, count;

    29     int32_t length2;

    30     uint32_t count2;

    31 } WeightRange;

    33 /**

    34  * Determine heuristically

    35  * what ranges to use for a given number of weights between (excluding)

    36  * two limits.

    37  *

    38  * @param lowerLimit A collation element weight; the ranges will be filled to cover

    39  *                   weights greater than this one.

    40  * @param upperLimit A collation element weight; the ranges will be filled to cover

    41  *                   weights less than this one.

    42  * @param n          The number of collation element weights w necessary such that

    43  *                   lowerLimit<w<upperLimit in lexical order.

    44  * @param maxByte    The highest valid byte value.

    45  * @param ranges     An array that is filled in with one or more ranges to cover

    46  *                   n weights between the limits.

    47  * @return number of ranges, 0 if it is not possible to fit n elements between the limits

    48  */

    49 U_CFUNC int32_t

    50 ucol_allocWeights(uint32_t lowerLimit, uint32_t upperLimit,

    51                   uint32_t n,

    52                   uint32_t maxByte,

    53                   WeightRange ranges[7]);

    55 /**

    56  * Given a set of ranges calculated by ucol_allocWeights(),

    57  * iterate through the weights.

    58  * The ranges are modified to keep the current iteration state.

    59  *

    60  * @param ranges The array of ranges that ucol_allocWeights() filled in.

    61  *               The ranges are modified.

    62  * @param pRangeCount The number of ranges. It will be decremented when necessary.

    63  * @return The next weight in the ranges, or 0xffffffff if there is none left.

    64  */

    65 U_CFUNC uint32_t

    66 ucol_nextWeight(WeightRange ranges[], int32_t *pRangeCount);

    68 #endif /* #if !UCONFIG_NO_COLLATION */

    70 #endif

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