/*
 *  Copyright (C) 2006 George Staikos <staikos@kde.org>
 *  Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
 *  Copyright (C) 2007 Apple Computer, Inc. All rights reserved.
 *  Copyright (C) 2007-2009 Torch Mobile, Inc.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 *
 */

#ifndef UNICODE_WINCE_H
#define UNICODE_WINCE_H

#include "ce_unicode.h"

#define TO_MASK(x) (1 << (x))

// some defines from ICU needed one or two places

#define U16_IS_LEAD(c) (((c) & 0xfffffc00) == 0xd800)
#define U16_IS_TRAIL(c) (((c) & 0xfffffc00) == 0xdc00)
#define U16_SURROGATE_OFFSET ((0xd800 << 10UL) + 0xdc00 - 0x10000)
#define U16_GET_SUPPLEMENTARY(lead, trail) \
    (((UChar32)(lead) << 10UL) + (UChar32)(trail) - U16_SURROGATE_OFFSET)

#define U16_LEAD(supplementary) (UChar)(((supplementary) >> 10) + 0xd7c0)
#define U16_TRAIL(supplementary) (UChar)(((supplementary) & 0x3ff) | 0xdc00)
#define U16_LENGTH(c) ((uint32_t)(c) <= 0xffff ? 1 : 2)

#define U_IS_SURROGATE(c) (((c) & 0xfffff800) == 0xd800)
#define U16_IS_SURROGATE(c) U_IS_SURROGATE(c)
#define U16_IS_SURROGATE_LEAD(c) (((c) & 0x400) == 0)

#define U16_NEXT(s, i, length, c) { \
    (c)=(s)[(i)++]; \
    if (U16_IS_LEAD(c)) { \
        uint16_t __c2; \
        if ((i) < (length) && U16_IS_TRAIL(__c2 = (s)[(i)])) { \
            ++(i); \
            (c) = U16_GET_SUPPLEMENTARY((c), __c2); \
        } \
    } \
}

#define U16_PREV(s, start, i, c) { \
    (c)=(s)[--(i)]; \
    if (U16_IS_TRAIL(c)) { \
        uint16_t __c2; \
        if ((i) > (start) && U16_IS_LEAD(__c2 = (s)[(i) - 1])) { \
            --(i); \
            (c) = U16_GET_SUPPLEMENTARY(__c2, (c)); \
        } \
    } \
}

#define U16_IS_SINGLE(c) !U_IS_SURROGATE(c)

namespace WTF {

    namespace Unicode {

        enum Direction {
            LeftToRight = UnicodeCE::U_LEFT_TO_RIGHT,
            RightToLeft = UnicodeCE::U_RIGHT_TO_LEFT,
            EuropeanNumber = UnicodeCE::U_EUROPEAN_NUMBER,
            EuropeanNumberSeparator = UnicodeCE::U_EUROPEAN_NUMBER_SEPARATOR,
            EuropeanNumberTerminator = UnicodeCE::U_EUROPEAN_NUMBER_TERMINATOR,
            ArabicNumber = UnicodeCE::U_ARABIC_NUMBER,
            CommonNumberSeparator = UnicodeCE::U_COMMON_NUMBER_SEPARATOR,
            BlockSeparator = UnicodeCE::U_BLOCK_SEPARATOR,
            SegmentSeparator = UnicodeCE::U_SEGMENT_SEPARATOR,
            WhiteSpaceNeutral = UnicodeCE::U_WHITE_SPACE_NEUTRAL,
            OtherNeutral = UnicodeCE::U_OTHER_NEUTRAL,
            LeftToRightEmbedding = UnicodeCE::U_LEFT_TO_RIGHT_EMBEDDING,
            LeftToRightOverride = UnicodeCE::U_LEFT_TO_RIGHT_OVERRIDE,
            RightToLeftArabic = UnicodeCE::U_RIGHT_TO_LEFT_ARABIC,
            RightToLeftEmbedding = UnicodeCE::U_RIGHT_TO_LEFT_EMBEDDING,
            RightToLeftOverride = UnicodeCE::U_RIGHT_TO_LEFT_OVERRIDE,
            PopDirectionalFormat = UnicodeCE::U_POP_DIRECTIONAL_FORMAT,
            NonSpacingMark = UnicodeCE::U_DIR_NON_SPACING_MARK,
            BoundaryNeutral = UnicodeCE::U_BOUNDARY_NEUTRAL
        };

        enum DecompositionType {
          DecompositionNone = UnicodeCE::U_DT_NONE,
          DecompositionCanonical = UnicodeCE::U_DT_CANONICAL,
          DecompositionCompat = UnicodeCE::U_DT_COMPAT,
          DecompositionCircle = UnicodeCE::U_DT_CIRCLE,
          DecompositionFinal = UnicodeCE::U_DT_FINAL,
          DecompositionFont = UnicodeCE::U_DT_FONT,
          DecompositionFraction = UnicodeCE::U_DT_FRACTION,
          DecompositionInitial = UnicodeCE::U_DT_INITIAL,
          DecompositionIsolated = UnicodeCE::U_DT_ISOLATED,
          DecompositionMedial = UnicodeCE::U_DT_MEDIAL,
          DecompositionNarrow = UnicodeCE::U_DT_NARROW,
          DecompositionNoBreak = UnicodeCE::U_DT_NOBREAK,
          DecompositionSmall = UnicodeCE::U_DT_SMALL,
          DecompositionSquare = UnicodeCE::U_DT_SQUARE,
          DecompositionSub = UnicodeCE::U_DT_SUB,
          DecompositionSuper = UnicodeCE::U_DT_SUPER,
          DecompositionVertical = UnicodeCE::U_DT_VERTICAL,
          DecompositionWide = UnicodeCE::U_DT_WIDE,
        };

        enum CharCategory {
          NoCategory =  0,
          Other_NotAssigned = TO_MASK(UnicodeCE::U_GENERAL_OTHER_TYPES),
          Letter_Uppercase = TO_MASK(UnicodeCE::U_UPPERCASE_LETTER),
          Letter_Lowercase = TO_MASK(UnicodeCE::U_LOWERCASE_LETTER),
          Letter_Titlecase = TO_MASK(UnicodeCE::U_TITLECASE_LETTER),
          Letter_Modifier = TO_MASK(UnicodeCE::U_MODIFIER_LETTER),
          Letter_Other = TO_MASK(UnicodeCE::U_OTHER_LETTER),

          Mark_NonSpacing = TO_MASK(UnicodeCE::U_NON_SPACING_MARK),
          Mark_Enclosing = TO_MASK(UnicodeCE::U_ENCLOSING_MARK),
          Mark_SpacingCombining = TO_MASK(UnicodeCE::U_COMBINING_SPACING_MARK),

          Number_DecimalDigit = TO_MASK(UnicodeCE::U_DECIMAL_DIGIT_NUMBER),
          Number_Letter = TO_MASK(UnicodeCE::U_LETTER_NUMBER),
          Number_Other = TO_MASK(UnicodeCE::U_OTHER_NUMBER),

          Separator_Space = TO_MASK(UnicodeCE::U_SPACE_SEPARATOR),
          Separator_Line = TO_MASK(UnicodeCE::U_LINE_SEPARATOR),
          Separator_Paragraph = TO_MASK(UnicodeCE::U_PARAGRAPH_SEPARATOR),

          Other_Control = TO_MASK(UnicodeCE::U_CONTROL_CHAR),
          Other_Format = TO_MASK(UnicodeCE::U_FORMAT_CHAR),
          Other_PrivateUse = TO_MASK(UnicodeCE::U_PRIVATE_USE_CHAR),
          Other_Surrogate = TO_MASK(UnicodeCE::U_SURROGATE),

          Punctuation_Dash = TO_MASK(UnicodeCE::U_DASH_PUNCTUATION),
          Punctuation_Open = TO_MASK(UnicodeCE::U_START_PUNCTUATION),
          Punctuation_Close = TO_MASK(UnicodeCE::U_END_PUNCTUATION),
          Punctuation_Connector = TO_MASK(UnicodeCE::U_CONNECTOR_PUNCTUATION),
          Punctuation_Other = TO_MASK(UnicodeCE::U_OTHER_PUNCTUATION),

          Symbol_Math = TO_MASK(UnicodeCE::U_MATH_SYMBOL),
          Symbol_Currency = TO_MASK(UnicodeCE::U_CURRENCY_SYMBOL),
          Symbol_Modifier = TO_MASK(UnicodeCE::U_MODIFIER_SYMBOL),
          Symbol_Other = TO_MASK(UnicodeCE::U_OTHER_SYMBOL),

          Punctuation_InitialQuote = TO_MASK(UnicodeCE::U_INITIAL_PUNCTUATION),
          Punctuation_FinalQuote = TO_MASK(UnicodeCE::U_FINAL_PUNCTUATION)
        };

        CharCategory category(unsigned int);

        bool isSpace(wchar_t);
        bool isLetter(wchar_t);
        bool isPrintableChar(wchar_t);
        bool isUpper(wchar_t);
        bool isLower(wchar_t);
        bool isPunct(wchar_t);
        bool isDigit(wchar_t);
        bool isAlphanumeric(wchar_t);
        inline bool isSeparatorSpace(wchar_t c) { return category(c) == Separator_Space; }
        inline bool isHighSurrogate(wchar_t c) { return (c & 0xfc00) == 0xd800; }
        inline bool isLowSurrogate(wchar_t c) { return (c & 0xfc00) == 0xdc00; }

        wchar_t toLower(wchar_t);
        wchar_t toUpper(wchar_t);
        wchar_t foldCase(wchar_t);
        wchar_t toTitleCase(wchar_t);
        int toLower(wchar_t* result, int resultLength, const wchar_t* source, int sourceLength, bool* isError);
        int toUpper(wchar_t* result, int resultLength, const wchar_t* source, int sourceLength, bool* isError);
        int foldCase(UChar* result, int resultLength, const wchar_t* source, int sourceLength, bool* isError);

        int digitValue(wchar_t);

        wchar_t mirroredChar(UChar32);
        unsigned char combiningClass(UChar32);
        DecompositionType decompositionType(UChar32);
        Direction direction(UChar32);
        inline bool isArabicChar(UChar32 c)
        {
            return c >= 0x0600 && c <= 0x06FF;
        }

        inline bool hasLineBreakingPropertyComplexContext(UChar32)
        {
            return false; // FIXME: implement!
        }

        inline int umemcasecmp(const wchar_t* a, const wchar_t* b, int len)
        {
            for (int i = 0; i < len; ++i) {
                wchar_t c1 = foldCase(a[i]);
                wchar_t c2 = foldCase(b[i]);
                if (c1 != c2)
                    return c1 - c2;
            }
            return 0;
        }

        inline UChar32 surrogateToUcs4(wchar_t high, wchar_t low)
        {
            return (UChar32(high) << 10) + low - 0x35fdc00;
        }

    }   // namespace Unicode

}   // namespace WTF

#endif
// vim: ts=2 sw=2 et
