CPCharacterSet.j

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/*
 * CPCharacterSet.j
 * Foundation
 *
 * Copyright 2008, Emanuele Vulcano
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */


// CPCharacterSet is a class cluster. Concrete implementations
// follow after the main abstract class.

var _builtInCharacterSets = {};

@implementation CPCharacterSet : CPObject
{
    BOOL _inverted;
}

// Missing methods
/*
- (BOOL)isSupersetOfSet:(CPCharacterSet)theOtherSet{}
+ (id)characterSetWithBitmapRepresentation:(CPData)data{}
+ (id)characterSetWithContentsOfFile:(CPString)path{}
- (CPData)bitmapRepresentation{}

- (void)formIntersectionWithCharacterSet:(CPCharacterSet)otherSet
- (void)formUnionWithCharacterSet:(CPCharacterSet)otherSet
- (void)removeCharactersInRange:(CPRange)aRange
- (void)removeCharactersInString:(CPString)aString
*/

- (id)init
{
    self = [super init];

    if (self)
        _inverted = NO;

    return self;
}

- (void)invert
{
    _inverted = !_inverted;
}

- (BOOL)characterIsMember:(CPString)aCharacter
{
    // IMPLEMENTED BY SUBCLASSES
}

- (BOOL)hasMemberInPlane:(int)aPlane
{
    // IMPLEMENTED BY SUBCLASSES
}

+ (id)characterSetWithCharactersInString:(CPString)aString
{
    return [[_CPStringContentCharacterSet alloc] initWithString:aString];
}

+ (id)characterSetWithRange:(CPRange)aRange
{
    return [[_CPRangeCharacterSet alloc] initWithRange:aRange];
}

+ (id)alphanumericCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)controlCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)decimalDigitCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)decomposableCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)illegalCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)letterCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)lowercaseLetterCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)nonBaseCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)punctuationCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)uppercaseLetterCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)whitespaceAndNewlineCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

+ (id)whitespaceCharacterSet
{
    return [CPCharacterSet _sharedCharacterSetWithName:_cmd];
}

// private methods
+ (id)_sharedCharacterSetWithName:(id)csname
{
    var cs = _builtInCharacterSets[csname];

    if (!cs)
    {
        var i = 0,
            ranges = [CPArray array],
            rangeArray = eval(csname);

        for (; i < rangeArray.length; i+= 2)
        {
            var loc = rangeArray[i],
                length = rangeArray[i + 1],
                range = CPMakeRange(loc,length);
            [ranges addObject:range];
        }

        cs = [[_CPRangeCharacterSet alloc] initWithRanges:ranges];
        _builtInCharacterSets[csname] = cs;
    }

    return cs;
}

- (void)_setInverted:flag
{
    _inverted = flag;
}

@end

var CPCharacterSetInvertedKey = @"CPCharacterSetInvertedKey";

@implementation CPCharacterSet (CPCoding)

- (id)initWithCoder:(CPCoder)aCoder
{
    if (self = [super init])
    {
        _inverted = [aCoder decodeBoolForKey:CPCharacterSetInvertedKey];
    }

    return self;
}

- (void)encodeWithCoder:(CPCoder)aCoder
{
    [aCoder encodeBool:_inverted forKey:CPCharacterSetInvertedKey];
}

@end

// A character set that stores a list of ranges of
// acceptable characters.
@implementation _CPRangeCharacterSet : CPCharacterSet
{
    CPArray _ranges;
}

// Creates a range character set with a single range.
- (id)initWithRange:(CPRange)r
{
    return [self initWithRanges:[CPArray arrayWithObject:r]];
}

// Creates a range character set with multiple ranges.
- (id)initWithRanges:(CPArray)ranges
{
    self = [super init];

    if (self)
    {
        _ranges = ranges;
    }

    return self;
}

- (id)copy
{
    var set = [[_CPRangeCharacterSet alloc] initWithRanges:_ranges];
    [set _setInverted:_inverted];
    return set;
}

- (id)invertedSet
{
    var set = [[_CPRangeCharacterSet alloc] initWithRanges:_ranges];
    [set invert];
    return set;
}

- (BOOL)characterIsMember:(CPString)aCharacter
{
    var c = aCharacter.charCodeAt(0),
        enu = [_ranges objectEnumerator],
        range;

    while ((range = [enu nextObject]) !== nil)
    {
        if (CPLocationInRange(c, range))
            return !_inverted;
    }

    return _inverted;
}

- (BOOL)hasMemberInPlane:(int)plane // TO DO : when inverted
{
    // JavaScript strings can only return char codes
    // up to 0xFFFF (per the ECMA standard), so
    // they all live in the Basic Multilingual Plane
    // (aka plane 0).

    if (plane !== 0)
        return NO;

    var enu = [_ranges objectEnumerator],
        range;

    while ((range = [enu nextObject]) !== nil)
    {
        if (!CPEmptyRange(range))
            return YES;
    }

    return NO;
}

- (void)addCharactersInRange:(CPRange)aRange // Needs _inverted support
{
    [_ranges addObject:aRange];
}

- (void)addCharactersInString:(CPString)aString // Needs _inverted support
{
    var i = 0;

    for (; i < aString.length; i++)
    {
        var code = aString.charCodeAt(i),
            range = CPMakeRange(code,1);

        [_ranges addObject:range];
    }
}

@end

// A character set that scans a string's contents for
// acceptable characters.
@implementation _CPStringContentCharacterSet : CPCharacterSet
{
    CPString _string;
}

- (id)initWithString:(CPString)s
{
    self = [super init];

    if (self)
    {
        _string = s;
    }

    return self;
}

- (id)copy
{
    var set = [[_CPStringContentCharacterSet alloc] initWithString:_string];
    [set _setInverted:_inverted];

    return set;
}

- (id)invertedSet
{
    var set = [[_CPStringContentCharacterSet alloc] initWithString:_string];
    [set invert];

    return set;
}

- (BOOL)characterIsMember:(CPString)c
{
    return (_string.indexOf(c.charAt(0)) !== -1) === !_inverted;
}

- (CPString)description
{
    return [super description] + " { string = '" + _string + "'}";
}

- (BOOL)hasMemberInPlane:(int)plane
{
    // JavaScript strings can only return char codes
    // up to 0xFFFF (per the ECMA standard), so
    // they all live in the Basic Multilingual Plane
    // (aka plane 0).

    return _string.length && plane === 0;
}

- (void)addCharactersInRange:(CPRange)aRange // Needs _inverted support
{
    var i = aRange.location,
        count = aRange.location + aRange.length;

    for (; i < count; i++)
    {
        var s = String.fromCharCode(i);

        if (![self characterIsMember:s])
            _string = [_string stringByAppendingString:s];
    }
}

- (void)addCharactersInString:(CPString)aString // Needs _inverted support
{
    var i = 0;

    for (; i < aString.length; i++)
    {
        var s = aString.charAt(i);

        if (![self characterIsMember:s])
            _string = [_string stringByAppendingString:s];
    }
}

- (BOOL)isEqual:(CPCharacterSet)aCharacterSet
{
    if (self === aCharacterSet)
        return YES;

    if (!aCharacterSet || ![aCharacterSet isKindOfClass:[self class]])
        return NO;

    return [self _isEqualToStringContentCharacterSet:aCharacterSet];
}

- (BOOL)_isEqualToStringContentCharacterSet:(_CPStringContentCharacterSet)aCharacterSet
{
    if (!aCharacterSet)
        return NO;

    return _string === aCharacterSet._string && _inverted === aCharacterSet._inverted;
}

@end

var _CPStringContentCharacterSetStringKey = @"_CPStringContentCharacterSetStringKey";

@implementation _CPStringContentCharacterSet (CPCoding)

- (id)initWithCoder:(CPCoder)aCoder
{
    if (self = [super initWithCoder:aCoder])
    {
        _string = [aCoder decodeObjectForKey:_CPStringContentCharacterSetStringKey]
    }

    return self;
}

- (void)encodeWithCoder:(CPCoder)aCoder
{
    [super encodeWithCoder:aCoder];

    [aCoder encodeObject:_string forKey:_CPStringContentCharacterSetStringKey];
}

@end

_CPCharacterSetTrimAtBeginning  = 1 << 1;
_CPCharacterSetTrimAtEnd        = 1 << 2;

@implementation CPString (CPCharacterSetAdditions)

- (CPArray)componentsSeparatedByCharactersInSet:(CPCharacterSet)separator
{
    if (!separator)
        [CPException raise:CPInvalidArgumentException
                    reason:"componentsSeparatedByCharactersInSet: the separator can't be 'nil'"];

    var components = [CPMutableArray array],
        componentRange = CPMakeRange(0, 0),
        i = 0;

    for (; i < self.length; i++)
    {
        if ([separator characterIsMember:self.charAt(i)])
        {
            componentRange.length = i - componentRange.location;
            [components addObject:[self substringWithRange:componentRange]];
            componentRange.location += componentRange.length + 1;
        }
    }

    componentRange.length = self.length - componentRange.location;
    [components addObject:[self substringWithRange:componentRange]];

    return components;
}

// As per the Cocoa method.
- (id)stringByTrimmingCharactersInSet:(CPCharacterSet)set
{
    return [self _stringByTrimmingCharactersInSet:set options:_CPCharacterSetTrimAtBeginning | _CPCharacterSetTrimAtEnd];
}

// private method evilness!
// CPScanner's scanUpToString:... methods rely on this
// method being present.
- (id)_stringByTrimmingCharactersInSet:(CPCharacterSet)set options:(int)options
{
    var str = self;

    if (options & _CPCharacterSetTrimAtBeginning)
    {
        var cutEdgeBeginning = 0;

        while (cutEdgeBeginning < self.length && [set characterIsMember:self.charAt(cutEdgeBeginning)])
            cutEdgeBeginning++;

        str = str.substr(cutEdgeBeginning);
    }

    if (options & _CPCharacterSetTrimAtEnd)
    {
        var cutEdgeEnd = str.length;

        while (cutEdgeEnd > 0 && [set characterIsMember:str.charAt(cutEdgeEnd - 1)])
            cutEdgeEnd--;

        str = str.substr(0, cutEdgeEnd);
    }

    return str;
}

@end

alphanumericCharacterSet = [
48,10,
65,26,
97,26,
170,1,
178,2,
181,1,
185,2,
188,3,
192,23,
216,31,
248,458,
710,12,
736,5,
750,1,
768,112,
890,4,
902,1,
904,3,
908,1,
910,20,
931,44,
976,38,
1015,139,
1155,4,
1160,140,
1329,38,
1369,1,
1377,39,
1425,45,
1471,1,
1473,2,
1476,2,
1479,1,
1488,27,
1520,3,
1552,6,
1569,26,
1600,31,
1632,10,
1646,102,
1749,8,
1758,11,
1770,19,
1791,1,
1808,59,
1869,33,
1920,50,
1984,54,
2042,1,
2305,57,
2364,18,
2384,5,
2392,12,
2406,10,
2427,5,
2433,3,
2437,8,
2447,2,
2451,22,
2474,7,
2482,1,
2486,4,
2492,9,
2503,2,
2507,4,
2519,1,
2524,2,
2527,5,
2534,12,
2548,6,
2561,3,
2565,6,
2575,2,
2579,22,
2602,7,
2610,2,
2613,2,
2616,2,
2620,1,
2622,5,
2631,2,
2635,3,
2649,4,
2654,1,
2662,15,
2689,3,
2693,9,
2703,3,
2707,22,
2730,7,
2738,2,
2741,5,
2748,10,
2759,3,
2763,3,
2768,1,
2784,4,
2790,10,
2817,3,
2821,8,
2831,2,
2835,22,
2858,7,
2866,2,
2869,5,
2876,8,
2887,2,
2891,3,
2902,2,
2908,2,
2911,3,
2918,10,
2929,1,
2946,2,
2949,6,
2958,3,
2962,4,
2969,2,
2972,1,
2974,2,
2979,2,
2984,3,
2990,12,
3006,5,
3014,3,
3018,4,
3031,1,
3046,13,
3073,3,
3077,8,
3086,3,
3090,23,
3114,10,
3125,5,
3134,7,
3142,3,
3146,4,
3157,2,
3168,2,
3174,10,
3202,2,
3205,8,
3214,3,
3218,23,
3242,10,
3253,5,
3260,9,
3270,3,
3274,4,
3285,2,
3294,1,
3296,4,
3302,10,
3330,2,
3333,8,
3342,3,
3346,23,
3370,16,
3390,6,
3398,3,
3402,4,
3415,1,
3424,2,
3430,10,
3458,2,
3461,18,
3482,24,
3507,9,
3517,1,
3520,7,
3530,1,
3535,6,
3542,1,
3544,8,
3570,2,
3585,58,
3648,15,
3664,10,
3713,2,
3716,1,
3719,2,
3722,1,
3725,1,
3732,4,
3737,7,
3745,3,
3749,1,
3751,1,
3754,2,
3757,13,
3771,3,
3776,5,
3782,1,
3784,6,
3792,10,
3804,2,
3840,1,
3864,2,
3872,20,
3893,1,
3895,1,
3897,1,
3902,10,
3913,34,
3953,20,
3974,6,
3984,8,
3993,36,
4038,1,
4096,34,
4131,5,
4137,2,
4140,7,
4150,4,
4160,10,
4176,10,
4256,38,
4304,43,
4348,1,
4352,90,
4447,68,
4520,82,
4608,73,
4682,4,
4688,7,
4696,1,
4698,4,
4704,41,
4746,4,
4752,33,
4786,4,
4792,7,
4800,1,
4802,4,
4808,15,
4824,57,
4882,4,
4888,67,
4959,1,
4969,20,
4992,16,
5024,85,
5121,620,
5743,8,
5761,26,
5792,75,
5870,3,
5888,13,
5902,7,
5920,21,
5952,20,
5984,13,
5998,3,
6002,2,
6016,52,
6070,30,
6103,1,
6108,2,
6112,10,
6128,10,
6155,3,
6160,10,
6176,88,
6272,42,
6400,29,
6432,12,
6448,12,
6470,40,
6512,5,
6528,42,
6576,26,
6608,10,
6656,28,
6912,76,
6992,10,
7019,9,
7424,203,
7678,158,
7840,90,
7936,22,
7960,6,
7968,38,
8008,6,
8016,8,
8025,1,
8027,1,
8029,1,
8031,31,
8064,53,
8118,7,
8126,1,
8130,3,
8134,7,
8144,4,
8150,6,
8160,13,
8178,3,
8182,7,
8304,2,
8308,6,
8319,11,
8336,5,
8400,32,
8450,1,
8455,1,
8458,10,
8469,1,
8473,5,
8484,1,
8486,1,
8488,1,
8490,4,
8495,11,
8508,4,
8517,5,
8526,1,
8531,50,
9312,60,
9450,22,
10102,30,
11264,47,
11312,47,
11360,13,
11380,4,
11392,101,
11517,1,
11520,38,
11568,54,
11631,1,
11648,23,
11680,7,
11688,7,
11696,7,
11704,7,
11712,7,
11720,7,
11728,7,
11736,7,
12293,3,
12321,15,
12337,5,
12344,5,
12353,86,
12441,2,
12445,3,
12449,90,
12540,4,
12549,40,
12593,94,
12690,4,
12704,24,
12784,16,
12832,10,
12881,15,
12928,10,
12977,15,
13312,6582,
19968,20924,
40960,1165,
42775,4,
43008,40,
43072,52,
44032,11172,
63744,302,
64048,59,
64112,106,
64256,7,
64275,5,
64285,12,
64298,13,
64312,5,
64318,1,
64320,2,
64323,2,
64326,108,
64467,363,
64848,64,
64914,54,
65008,12,
65024,16,
65056,4,
65136,5,
65142,135,
65296,10,
65313,26,
65345,26,
65382,89,
65474,6,
65482,6,
65490,6
];

controlCharacterSet = [
0,32,
127,33,
173,1,
1536,4,
1757,1,
1807,1,
6068,2,
8203,5,
8234,5,
8288,4,
8298,6,
65279,1
];

decimalDigitCharacterSet = [
48,10,
1632,10,
1776,10,
1984,10,
2406,10,
2534,10,
2662,10,
2790,10,
2918,10,
3046,10,
3174,10,
3302,10,
3430,10,
3664,10,
3792,10,
3872,10,
4160,10,
6112,10,
6160,10,
6470,10,
6608,10,
6992,10
];

decomposableCharacterSet = [
192,6,
199,9,
209,6,
217,5,
224,6,
231,9,
241,6,
249,5,
255,17,
274,20,
296,9,
308,4,
313,6,
323,6,
332,6,
340,18,
360,23,
416,2,
431,2,
461,16,
478,6,
486,11,
500,2,
504,36,
542,2,
550,14,
832,2,
835,2,
884,1,
894,1,
901,6,
908,1,
910,3,
938,7,
970,5,
979,2,
1024,2,
1027,1,
1031,1,
1036,3,
1049,1,
1081,1,
1104,2,
1107,1,
1111,1,
1116,3,
1142,2,
1217,2,
1232,4,
1238,2,
1242,6,
1250,6,
1258,12,
1272,2,
1570,5,
1728,1,
1730,1,
1747,1,
2345,1,
2353,1,
2356,1,
2392,8,
2507,2,
2524,2,
2527,1,
2611,1,
2614,1,
2649,3,
2654,1,
2888,1,
2891,2,
2908,2,
2964,1,
3018,3,
3144,1,
3264,1,
3271,2,
3274,2,
3402,3,
3546,1,
3548,3,
3907,1,
3917,1,
3922,1,
3927,1,
3932,1,
3945,1,
3955,1,
3957,2,
3960,1,
3969,1,
3987,1,
3997,1,
4002,1,
4007,1,
4012,1,
4025,1,
4134,1,
6918,1,
6920,1,
6922,1,
6924,1,
6926,1,
6930,1,
6971,1,
6973,1,
6976,2,
6979,1,
7680,154,
7835,1,
7840,90,
7936,22,
7960,6,
7968,38,
8008,6,
8016,8,
8025,1,
8027,1,
8029,1,
8031,31,
8064,53,
8118,7,
8126,1,
8129,4,
8134,14,
8150,6,
8157,19,
8178,3,
8182,8,
8192,2,
8486,1,
8490,2,
8602,2,
8622,1,
8653,3,
8708,1,
8713,1,
8716,1,
8740,1,
8742,1,
8769,1,
8772,1,
8775,1,
8777,1,
8800,1,
8802,1,
8813,5,
8820,2,
8824,2,
8832,2,
8836,2,
8840,2,
8876,4,
8928,4,
8938,4,
9001,2,
10972,1,
12364,1,
12366,1,
12368,1,
12370,1,
12372,1,
12374,1,
12376,1,
12378,1,
12380,1,
12382,1,
12384,1,
12386,1,
12389,1,
12391,1,
12393,1,
12400,2,
12403,2,
12406,2,
12409,2,
12412,2,
12436,1,
12446,1,
12460,1,
12462,1,
12464,1,
12466,1,
12468,1,
12470,1,
12472,1,
12474,1,
12476,1,
12478,1,
12480,1,
12482,1,
12485,1,
12487,1,
12489,1,
12496,2,
12499,2,
12502,2,
12505,2,
12508,2,
12532,1,
12535,4,
12542,1,
44032,11172,
63744,270,
64016,1,
64018,1,
64021,10,
64032,1,
64034,1,
64037,2,
64042,4,
64048,59,
64112,106,
64285,1,
64287,1,
64298,13,
64312,5,
64318,1,
64320,2,
64323,2
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