Sweden-Number/dlls/usp10/usp10.c

/*
 * Implementation of Uniscribe Script Processor (usp10.dll)
 *
 * Copyright 2005 Steven Edwards for CodeWeavers
 * Copyright 2006 Hans Leidekker
 * Copyright 2010 CodeWeavers, Aric Stewart
 *
 * 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 St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 * Notes:
 * Uniscribe allows for processing of complex scripts such as joining
 * and filtering characters and bi-directional text with custom line breaks.
 */

#include <stdarg.h>
#include <stdlib.h>
#include <math.h>

#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "winreg.h"
#include "usp10.h"

#include "usp10_internal.h"

#include "wine/debug.h"
#include "wine/unicode.h"

WINE_DEFAULT_DEBUG_CHANNEL(uniscribe);

typedef struct _scriptRange
{
    WORD script;
    DWORD rangeFirst;
    DWORD rangeLast;
    WORD numericScript;
    WORD punctScript;
} scriptRange;

static const scriptRange scriptRanges[] = {
    /* Basic Latin: U+0000–U+007A */
    { Script_Latin,      0x00,   0x07a ,  Script_Numeric, Script_Punctuation},
    /* Latin-1 Supplement: U+0080–U+00FF */
    /* Latin Extended-A: U+0100–U+017F */
    /* Latin Extended-B: U+0180–U+024F */
    /* IPA Extensions: U+0250–U+02AF */
    /* Spacing Modifier Letters:U+02B0–U+02FF */
    { Script_Latin,      0x80,   0x2ff ,  Script_Numeric2, Script_Punctuation},
    /* Combining Diacritical Marks : U+0300–U+036F */
    { Script_Diacritical,0x300,  0x36f,  0, 0},
    /* Greek: U+0370–U+03FF */
    { Script_Greek,      0x370,  0x3ff,  0, 0},
    /* Cyrillic: U+0400–U+04FF */
    /* Cyrillic Supplement: U+0500–U+052F */
    { Script_Cyrillic,   0x400,  0x52f,  0, 0},
    /* Armenian: U+0530–U+058F */
    { Script_Armenian,   0x530,  0x58f,  0, 0},
    /* Hebrew: U+0590–U+05FF */
    { Script_Hebrew,     0x590,  0x5ff,  0, 0},
    /* Arabic: U+0600–U+06FF */
    { Script_Arabic,     0x600,  0x6ef,  Script_Arabic_Numeric, 0},
    /* Defined by Windows */
    { Script_Persian,    0x6f0,  0x6f9,  0, 0},
    /* Continue Arabic: U+0600–U+06FF */
    { Script_Arabic,     0x6fa,  0x6ff,  0, 0},
    /* Syriac: U+0700–U+074F*/
    { Script_Syriac,     0x700,  0x74f,  0, 0},
    /* Arabic Supplement: U+0750–U+077F */
    { Script_Arabic,     0x750,  0x77f,  0, 0},
    /* Thaana: U+0780–U+07BF */
    { Script_Thaana,     0x780,  0x7bf,  0, 0},
    /* N’Ko: U+07C0–U+07FF */
    { Script_NKo,        0x7c0,  0x7ff,  0, 0},
    /* Devanagari: U+0900–U+097F */
    { Script_Devanagari, 0x900,  0x97f,  Script_Devanagari_Numeric, 0},
    /* Bengali: U+0980–U+09FF */
    { Script_Bengali,    0x980,  0x9ff,  Script_Bengali_Numeric, 0},
    /* Gurmukhi: U+0A00–U+0A7F*/
    { Script_Gurmukhi,   0xa00,  0xa7f,  Script_Gurmukhi_Numeric, 0},
    /* Gujarati: U+0A80–U+0AFF*/
    { Script_Gujarati,   0xa80,  0xaff,  Script_Gujarati_Numeric, 0},
    /* Oriya: U+0B00–U+0B7F */
    { Script_Oriya,      0xb00,  0xb7f,  Script_Oriya_Numeric, 0},
    /* Tamil: U+0B80–U+0BFF */
    { Script_Tamil,      0xb80,  0xbff,  Script_Tamil_Numeric, 0},
    /* Telugu: U+0C00–U+0C7F */
    { Script_Telugu,     0xc00,  0xc7f,  Script_Telugu_Numeric, 0},
    /* Kannada: U+0C80–U+0CFF */
    { Script_Kannada,    0xc80,  0xcff,  Script_Kannada_Numeric, 0},
    /* Malayalam: U+0D00–U+0D7F */
    { Script_Malayalam,  0xd00,  0xd7f,  Script_Malayalam_Numeric, 0},
    /* Sinhala: U+0D80–U+0DFF */
    { Script_Sinhala,   0xd80,  0xdff,  0, 0},
    /* Thai: U+0E00–U+0E7F */
    { Script_Thai,      0xe00,  0xe7f,  Script_Thai_Numeric, 0},
    /* Lao: U+0E80–U+0EFF */
    { Script_Lao,       0xe80,  0xeff,  Script_Lao_Numeric, 0},
    /* Tibetan: U+0F00–U+0FFF */
    { Script_Tibetan,   0xf00,  0xfff,  0, 0},
    /* Myanmar: U+1000–U+109F */
    { Script_Myanmar,    0x1000,  0x109f, Script_Myanmar_Numeric, 0},
    /* Georgian: U+10A0–U+10FF */
    { Script_Georgian,   0x10a0,  0x10ff,  0, 0},
    /* Hangul Jamo: U+1100–U+11FF */
    { Script_Hangul,     0x1100,  0x11ff,  0, 0},
    /* Ethiopic: U+1200–U+137F */
    /* Ethiopic Extensions: U+1380–U+139F */
    { Script_Ethiopic,   0x1200,  0x139f,  0, 0},
    /* Cherokee: U+13A0–U+13FF */
    { Script_Cherokee,   0x13a0,  0x13ff,  0, 0},
    /* Canadian Aboriginal Syllabics: U+1400–U+167F */
    { Script_Canadian,   0x1400,  0x167f,  0, 0},
    /* Ogham: U+1680–U+169F */
    { Script_Ogham,      0x1680,  0x169f,  0, 0},
    /* Runic: U+16A0–U+16F0 */
    { Script_Runic,      0x16a0,  0x16f0,  0, 0},
    /* Khmer: U+1780–U+17FF */
    { Script_Khmer,      0x1780,  0x17ff,  Script_Khmer_Numeric, 0},
    /* Mongolian: U+1800–U+18AF */
    { Script_Mongolian,  0x1800,  0x18af,  Script_Mongolian_Numeric, 0},
    /* Canadian Aboriginal Syllabics Extended: U+18B0–U+18FF */
    { Script_Canadian,   0x18b0,  0x18ff,  0, 0},
    /* Tai Le: U+1950–U+197F */
    { Script_Tai_Le,     0x1950,  0x197f,  0, 0},
    /* New Tai Lue: U+1980–U+19DF */
    { Script_New_Tai_Lue,0x1980,  0x19df,  Script_New_Tai_Lue_Numeric, 0},
    /* Khmer Symbols: U+19E0–U+19FF */
    { Script_Khmer,      0x19e0,  0x19ff,  Script_Khmer_Numeric, 0},
    /* Vedic Extensions: U+1CD0-U+1CFF */
    { Script_Devanagari, 0x1cd0, 0x1cff, Script_Devanagari_Numeric, 0},
    /* Phonetic Extensions: U+1D00–U+1DBF */
    { Script_Latin,      0x1d00, 0x1dbf, 0, 0},
    /* Combining Diacritical Marks Supplement: U+1DC0–U+1DFF */
    { Script_Diacritical,0x1dc0, 0x1dff, 0, 0},
    /* Latin Extended Additional: U+1E00–U+1EFF */
    { Script_Latin,      0x1e00, 0x1eff, 0, 0},
    /* Greek Extended: U+1F00–U+1FFF */
    { Script_Greek,      0x1f00, 0x1fff, 0, 0},
    /* General Punctuation: U+2000 –U+206f */
    { Script_Latin,      0x2000, 0x206f, 0, 0},
    /* Superscripts and Subscripts : U+2070 –U+209f */
    /* Currency Symbols : U+20a0 –U+20cf */
    { Script_Numeric2,   0x2070, 0x2070, 0, 0},
    { Script_Latin,      0x2071, 0x2073, 0, 0},
    { Script_Numeric2,   0x2074, 0x2079, 0, 0},
    { Script_Latin,      0x207a, 0x207f, 0, 0},
    { Script_Numeric2,   0x2080, 0x2089, 0, 0},
    { Script_Latin,      0x208a, 0x20cf, 0, 0},
    /* Letterlike Symbols : U+2100 –U+214f */
    /* Number Forms : U+2150 –U+218f */
    /* Arrows : U+2190 –U+21ff */
    /* Mathematical Operators : U+2200 –U+22ff */
    /* Miscellaneous Technical : U+2300 –U+23ff */
    /* Control Pictures : U+2400 –U+243f */
    /* Optical Character Recognition : U+2440 –U+245f */
    /* Enclosed Alphanumerics : U+2460 –U+24ff */
    /* Box Drawing : U+2500 –U+25ff */
    /* Block Elements : U+2580 –U+259f */
    /* Geometric Shapes : U+25a0 –U+25ff */
    /* Miscellaneous Symbols : U+2600 –U+26ff */
    /* Dingbats : U+2700 –U+27bf */
    /* Miscellaneous Mathematical Symbols-A : U+27c0 –U+27ef */
    /* Supplemental Arrows-A : U+27f0 –U+27ff */
    { Script_Latin,      0x2100, 0x27ff, 0, 0},
    /* Braille Patterns: U+2800–U+28FF */
    { Script_Braille,    0x2800, 0x28ff, 0, 0},
    /* Supplemental Arrows-B : U+2900 –U+297f */
    /* Miscellaneous Mathematical Symbols-B : U+2980 –U+29ff */
    /* Supplemental Mathematical Operators : U+2a00 –U+2aff */
    /* Miscellaneous Symbols and Arrows : U+2b00 –U+2bff */
    { Script_Latin,      0x2900, 0x2bff, 0, 0},
    /* Latin Extended-C: U+2C60–U+2C7F */
    { Script_Latin,      0x2c60, 0x2c7f, 0, 0},
    /* Georgian: U+2D00–U+2D2F */
    { Script_Georgian,   0x2d00,  0x2d2f,  0, 0},
    /* Tifinagh: U+2D30–U+2D7F */
    { Script_Tifinagh,   0x2d30,  0x2d7f,  0, 0},
    /* Ethiopic Extensions: U+2D80–U+2DDF */
    { Script_Ethiopic,   0x2d80,  0x2ddf,  0, 0},
    /* Cyrillic Extended-A: U+2DE0–U+2DFF */
    { Script_Cyrillic,   0x2de0, 0x2dff,  0, 0},
    /* CJK Radicals Supplement: U+2E80–U+2EFF */
    /* Kangxi Radicals: U+2F00–U+2FDF */
    { Script_CJK_Han,    0x2e80, 0x2fdf,  0, 0},
    /* Ideographic Description Characters: U+2FF0–U+2FFF */
    { Script_Ideograph  ,0x2ff0, 0x2fff,  0, 0},
    /* CJK Symbols and Punctuation: U+3000–U+303F */
    { Script_Ideograph  ,0x3000, 0x3004,  0, 0},
    { Script_CJK_Han    ,0x3005, 0x3005,  0, 0},
    { Script_Ideograph  ,0x3006, 0x3006,  0, 0},
    { Script_CJK_Han    ,0x3007, 0x3007,  0, 0},
    { Script_Ideograph  ,0x3008, 0x3020,  0, 0},
    { Script_CJK_Han    ,0x3021, 0x3029,  0, 0},
    { Script_Ideograph  ,0x302a, 0x3030,  0, 0},
    /* Kana Marks: */
    { Script_Kana       ,0x3031, 0x3035,  0, 0},
    { Script_Ideograph  ,0x3036, 0x3037,  0, 0},
    { Script_CJK_Han    ,0x3038, 0x303b,  0, 0},
    { Script_Ideograph  ,0x303c, 0x303f,  0, 0},
    /* Hiragana: U+3040–U+309F */
    /* Katakana: U+30A0–U+30FF */
    { Script_Kana       ,0x3040, 0x30ff,  0, 0},
    /* Bopomofo: U+3100–U+312F */
    { Script_Bopomofo   ,0x3100, 0x312f,  0, 0},
    /* Hangul Compatibility Jamo: U+3130–U+318F */
    { Script_Hangul     ,0x3130, 0x318f,  0, 0},
    /* Kanbun: U+3190–U+319F */
    { Script_Ideograph  ,0x3190, 0x319f,  0, 0},
    /* Bopomofo Extended: U+31A0–U+31BF */
    { Script_Bopomofo   ,0x31a0, 0x31bf,  0, 0},
    /* CJK Strokes: U+31C0–U+31EF */
    { Script_Ideograph  ,0x31c0, 0x31ef,  0, 0},
    /* Katakana Phonetic Extensions: U+31F0–U+31FF */
    { Script_Kana       ,0x31f0, 0x31ff,  0, 0},
    /* Enclosed CJK Letters and Months: U+3200–U+32FF */
    { Script_Hangul     ,0x3200, 0x321f,  0, 0},
    { Script_Ideograph  ,0x3220, 0x325f,  0, 0},
    { Script_Hangul     ,0x3260, 0x327f,  0, 0},
    { Script_Ideograph  ,0x3280, 0x32ef,  0, 0},
    { Script_Kana       ,0x32d0, 0x31ff,  0, 0},
    /* CJK Compatibility: U+3300–U+33FF*/
    { Script_Kana       ,0x3300, 0x3357,  0, 0},
    { Script_Ideograph  ,0x3358, 0x33ff,  0, 0},
    /* CJK Unified Ideographs Extension A: U+3400–U+4DBF */
    { Script_CJK_Han    ,0x3400, 0x4dbf,  0, 0},
    /* CJK Unified Ideographs: U+4E00–U+9FFF */
    { Script_CJK_Han    ,0x4e00, 0x9fff,  0, 0},
    /* Yi: U+A000–U+A4CF */
    { Script_Yi         ,0xa000, 0xa4cf,  0, 0},
    /* Vai: U+A500–U+A63F */
    { Script_Vai        ,0xa500, 0xa63f,  Script_Vai_Numeric, 0},
    /* Cyrillic Extended-B: U+A640–U+A69F */
    { Script_Cyrillic,   0xa640, 0xa69f,  0, 0},
    /* Modifier Tone Letters: U+A700–U+A71F */
    /* Latin Extended-D: U+A720–U+A7FF */
    { Script_Latin,      0xa700, 0xa7ff, 0, 0},
    /* Phags-pa: U+A840–U+A87F */
    { Script_Phags_pa,   0xa840, 0xa87f, 0, 0},
    /* Devanagari Extended: U+A8E0-U+A8FF */
    { Script_Devanagari, 0xa8e0, 0xa8ff, Script_Devanagari_Numeric, 0},
    /* Myanmar Extended-A: U+AA60–U+AA7F */
    { Script_Myanmar,    0xaa60,  0xaa7f, Script_Myanmar_Numeric, 0},
    /* Hangul Jamo Extended-A: U+A960–U+A97F */
    { Script_Hangul,     0xa960, 0xa97f,  0, 0},
    /* Hangul Syllables: U+AC00–U+D7A3 */
    { Script_Hangul,     0xac00, 0xd7a3,  0, 0},
    /* Hangul Jamo Extended-B: U+D7B0–U+D7FF */
    { Script_Hangul,     0xd7b0, 0xd7ff,  0, 0},
    /* Surrogates Area: U+D800–U+DFFF */
    { Script_Surrogates, 0xd800, 0xdbfe,  0, 0},
    { Script_Private,    0xdbff, 0xdc00,  0, 0},
    { Script_Surrogates, 0xdc01, 0xdfff,  0, 0},
    /* Private Use Area: U+E000–U+F8FF */
    { Script_Private,    0xe000, 0xf8ff,  0, 0},
    /* CJK Compatibility Ideographs: U+F900–U+FAFF */
    { Script_CJK_Han    ,0xf900, 0xfaff,  0, 0},
    /* Latin Ligatures: U+FB00–U+FB06 */
    { Script_Latin,      0xfb00, 0xfb06, 0, 0},
    /* Armenian ligatures U+FB13..U+FB17 */
    { Script_Armenian,   0xfb13, 0xfb17,  0, 0},
    /* Alphabetic Presentation Forms: U+FB1D–U+FB4F */
    { Script_Hebrew,     0xfb1d, 0xfb4f, 0, 0},
    /* Arabic Presentation Forms-A: U+FB50–U+FDFF*/
    { Script_Arabic,     0xfb50, 0xfdff, 0, 0},
    /* Vertical Forms: U+FE10–U+FE1F */
    /* Combining Half Marks: U+FE20–U+FE2F */
    /* CJK Compatibility Forms: U+FE30–U+FE4F */
    /* Small Form Variants: U+FE50–U+FE6F */
    { Script_Ideograph  ,0xfe10, 0xfe6f,  0, 0},
    /* Arabic Presentation Forms-B: U+FE70–U+FEFF*/
    { Script_Arabic,     0xfe70, 0xfeff, 0, 0},
    /* Halfwidth and Fullwidth Forms: U+FF00–FFEF */
    { Script_Ideograph  ,0xff00, 0xff64,  Script_Numeric2, 0},
    { Script_Kana       ,0xff65, 0xff9f,  0, 0},
    { Script_Hangul     ,0xffa0, 0xffdf,  0, 0},
    { Script_Ideograph  ,0xffe0, 0xffef,  0, 0},
    /* Plane - 1 */
    /* Deseret: U+10400–U+1044F */
    { Script_Deseret,     0x10400, 0x1044F,  0, 0},
    /* Osmanya: U+10480–U+104AF */
    { Script_Osmanya,    0x10480, 0x104AF,  Script_Osmanya_Numeric, 0},
    /* Mathematical Alphanumeric Symbols: U+1D400–U+1D7FF */
    { Script_MathAlpha,  0x1D400, 0x1D7FF,  0, 0},
    /* END */
    { SCRIPT_UNDEFINED,  0, 0, 0}
};

/* this must be in order so that the index matches the Script value */
const scriptData scriptInformation[] = {
    {{SCRIPT_UNDEFINED, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_NEUTRAL, 0, 0, 0, 0, ANSI_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     0x00000000,
     {0}},
    {{Script_Latin, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_ENGLISH, 0, 0, 0, 0, ANSI_CHARSET, 0, 0, 0, 0, 0, 0, 1, 0, 0},
     MS_MAKE_TAG('l','a','t','n'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_CR, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_NEUTRAL, 0, 0, 0, 0, ANSI_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     0x00000000,
     {0}},
    {{Script_Numeric, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_ENGLISH, 1, 0, 0, 0, ANSI_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     0x00000000,
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Control, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_ENGLISH, 0, 1, 0, 0, ANSI_CHARSET, 1, 0, 0, 0, 0, 0, 1, 0, 0},
     0x00000000,
     {0}},
    {{Script_Punctuation, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_NEUTRAL, 0, 0, 0, 0, ANSI_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     0x00000000,
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Arabic, 1, 1, 0, 0, 0, 0, { 1,0,0,0,0,0,0,0,0,0,0}},
     {LANG_ARABIC, 0, 1, 0, 0, ARABIC_CHARSET, 0, 0, 0, 0, 0, 0, 1, 1, 0},
     MS_MAKE_TAG('a','r','a','b'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Arabic_Numeric, 0, 1, 0, 0, 0, 0, { 2,0,0,0,0,0,0,0,0,0,0}},
     {LANG_ARABIC, 1, 1, 0, 0, ARABIC_CHARSET, 0, 0, 0, 0, 0, 0, 1, 0, 0},
     MS_MAKE_TAG('a','r','a','b'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Hebrew, 1, 1, 0, 0, 0, 0, { 1,0,0,0,0,0,0,0,0,0,0}},
     {LANG_HEBREW, 0, 1, 0, 1, HEBREW_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('h','e','b','r'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Syriac, 1, 1, 0, 0, 0, 0, { 1,0,0,0,0,0,0,0,0,0,0}},
     {LANG_SYRIAC, 0, 1, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 0, 1, 0, 0, 1, 0},
     MS_MAKE_TAG('s','y','r','c'),
     {'E','s','t','r','a','n','g','e','l','o',' ','E','d','e','s','s','a',0}},
    {{Script_Persian, 0, 1, 0, 0, 0, 0, { 2,0,0,0,0,0,0,0,0,0,0}},
     {LANG_PERSIAN, 1, 1, 0, 0, ARABIC_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('a','r','a','b'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Thaana, 1, 1, 0, 0, 0, 0, { 1,0,0,0,0,0,0,0,0,0,0}},
     {LANG_DIVEHI, 0, 1, 0, 1, DEFAULT_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('t','h','a','a'),
     {'M','V',' ','B','o','l','i',0}},
    {{Script_Greek, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_GREEK, 0, 0, 0, 0, GREEK_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('g','r','e','k'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Cyrillic, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_RUSSIAN, 0, 0, 0, 0, RUSSIAN_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('c','y','r','l'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Armenian, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_ARMENIAN, 0, 0, 0, 0, ANSI_CHARSET, 0, 0, 0, 0, 0, 0, 1, 0, 0},
     MS_MAKE_TAG('a','r','m','n'),
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     {'C','a','m','b','r','i','a',' ','M','a','t','h',0}},
    {{Script_Hebrew_Currency, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_HEBREW, 0, 1, 0, 0, HEBREW_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('h','e','b','r'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Vietnamese_Currency, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_VIETNAMESE, 0, 0, 0, 0, VIETNAMESE_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('l','a','t','n'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
    {{Script_Thai_Currency, 0, 0, 0, 0, 0, 0, { 0,0,0,0,0,0,0,0,0,0,0}},
     {LANG_THAI, 0, 1, 0, 0, THAI_CHARSET, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     MS_MAKE_TAG('t','h','a','i'),
     {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f',0}},
};

static const SCRIPT_PROPERTIES *script_props[] =
{
    &scriptInformation[0].props, &scriptInformation[1].props,
    &scriptInformation[2].props, &scriptInformation[3].props,
    &scriptInformation[4].props, &scriptInformation[5].props,
    &scriptInformation[6].props, &scriptInformation[7].props,
    &scriptInformation[8].props, &scriptInformation[9].props,
    &scriptInformation[10].props, &scriptInformation[11].props,
    &scriptInformation[12].props, &scriptInformation[13].props,
    &scriptInformation[14].props, &scriptInformation[15].props,
    &scriptInformation[16].props, &scriptInformation[17].props,
    &scriptInformation[18].props, &scriptInformation[19].props,
    &scriptInformation[20].props, &scriptInformation[21].props,
    &scriptInformation[22].props, &scriptInformation[23].props,
    &scriptInformation[24].props, &scriptInformation[25].props,
    &scriptInformation[26].props, &scriptInformation[27].props,
    &scriptInformation[28].props, &scriptInformation[29].props,
    &scriptInformation[30].props, &scriptInformation[31].props,
    &scriptInformation[32].props, &scriptInformation[33].props,
    &scriptInformation[34].props, &scriptInformation[35].props,
    &scriptInformation[36].props, &scriptInformation[37].props,
    &scriptInformation[38].props, &scriptInformation[39].props,
    &scriptInformation[40].props, &scriptInformation[41].props,
    &scriptInformation[42].props, &scriptInformation[43].props,
    &scriptInformation[44].props, &scriptInformation[45].props,
    &scriptInformation[46].props, &scriptInformation[47].props,
    &scriptInformation[48].props, &scriptInformation[49].props,
    &scriptInformation[50].props, &scriptInformation[51].props,
    &scriptInformation[52].props, &scriptInformation[53].props,
    &scriptInformation[54].props, &scriptInformation[55].props,
    &scriptInformation[56].props, &scriptInformation[57].props,
    &scriptInformation[58].props, &scriptInformation[59].props,
    &scriptInformation[60].props, &scriptInformation[61].props,
    &scriptInformation[62].props, &scriptInformation[63].props,
    &scriptInformation[64].props, &scriptInformation[65].props,
    &scriptInformation[66].props, &scriptInformation[67].props,
    &scriptInformation[68].props, &scriptInformation[69].props,
    &scriptInformation[70].props, &scriptInformation[71].props,
    &scriptInformation[72].props, &scriptInformation[73].props,
    &scriptInformation[74].props, &scriptInformation[75].props,
    &scriptInformation[76].props, &scriptInformation[77].props,
    &scriptInformation[78].props, &scriptInformation[79].props,
    &scriptInformation[80].props, &scriptInformation[81].props
};

typedef struct {
    ScriptCache *sc;
    int numGlyphs;
    WORD* glyphs;
    WORD* pwLogClust;
    int* piAdvance;
    SCRIPT_VISATTR* psva;
    GOFFSET* pGoffset;
    ABC* abc;
    int iMaxPosX;
    HFONT fallbackFont;
} StringGlyphs;

typedef struct {
    HDC hdc;
    DWORD dwFlags;
    BOOL invalid;
    int clip_len;
    int cItems;
    int cMaxGlyphs;
    SCRIPT_ITEM* pItem;
    int numItems;
    StringGlyphs* glyphs;
    SCRIPT_LOGATTR* logattrs;
    SIZE* sz;
    int* logical2visual;
} StringAnalysis;

typedef struct {
    BOOL ascending;
    WORD target;
} FindGlyph_struct;

static inline void *heap_alloc(SIZE_T size)
{
    return HeapAlloc(GetProcessHeap(), 0, size);
}

static inline void *heap_alloc_zero(SIZE_T size)
{
    return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
}

static inline BOOL heap_free(LPVOID mem)
{
    return HeapFree(GetProcessHeap(), 0, mem);
}

/* TODO Fix font properties on Arabic locale */
static inline BOOL set_cache_font_properties(const HDC hdc, ScriptCache *sc)
{
    if (!sc->sfnt)
    {
        sc->sfp.wgBlank = sc->tm.tmBreakChar;
        sc->sfp.wgDefault = sc->tm.tmDefaultChar;
        sc->sfp.wgInvalid = sc->sfp.wgBlank;
        sc->sfp.wgKashida = 0xFFFF;
        sc->sfp.iKashidaWidth = 0;
    }
    else
    {
        static const WCHAR chars[4] = {0x0020, 0x200B, 0xF71B, 0x0640};
        /* U+0020: numeric space
           U+200B: zero width space
           U+F71B: unknown char found by black box testing
           U+0640: kashida */
        WORD gi[4];

        if (GetGlyphIndicesW(hdc, chars, 4, gi, GGI_MARK_NONEXISTING_GLYPHS) != GDI_ERROR)
        {
            if(gi[0] != 0xFFFF) /* 0xFFFF: index of default non exist char */
                sc->sfp.wgBlank = gi[0];
            else
                sc->sfp.wgBlank = 0;

            sc->sfp.wgDefault = 0;

            if (gi[2] != 0xFFFF)
                sc->sfp.wgInvalid = gi[2];
            else if (gi[1] != 0xFFFF)
                sc->sfp.wgInvalid = gi[1];
            else if (gi[0] != 0xFFFF)
                sc->sfp.wgInvalid = gi[0];
            else
                sc->sfp.wgInvalid = 0;

            sc->sfp.wgKashida = gi[3];

            sc->sfp.iKashidaWidth = 0; /* TODO */
        }
        else
            return FALSE;
    }
    return TRUE;
}

static inline void get_cache_font_properties(SCRIPT_FONTPROPERTIES *sfp, ScriptCache *sc)
{
    sfp->wgBlank = sc->sfp.wgBlank;
    sfp->wgDefault = sc->sfp.wgDefault;
    sfp->wgInvalid = sc->sfp.wgInvalid;
    sfp->wgKashida = sc->sfp.wgKashida;
    sfp->iKashidaWidth = sc->sfp.iKashidaWidth;
}

static inline LONG get_cache_height(SCRIPT_CACHE *psc)
{
    return ((ScriptCache *)*psc)->tm.tmHeight;
}

static inline BYTE get_cache_pitch_family(SCRIPT_CACHE *psc)
{
    return ((ScriptCache *)*psc)->tm.tmPitchAndFamily;
}

static inline WORD get_cache_glyph(SCRIPT_CACHE *psc, DWORD c)
{
    CacheGlyphPage *page = ((ScriptCache *)*psc)->page[c / 0x10000];
    WORD *block;

    if (!page) return 0;
    block = page->glyphs[(c % 0x10000) >> GLYPH_BLOCK_SHIFT];
    if (!block) return 0;
    return block[(c % 0x10000) & GLYPH_BLOCK_MASK];
}

static inline WORD set_cache_glyph(SCRIPT_CACHE *psc, WCHAR c, WORD glyph)
{
    CacheGlyphPage **page = &((ScriptCache *)*psc)->page[c / 0x10000];
    WORD **block;
    if (!*page && !(*page = heap_alloc_zero(sizeof(CacheGlyphPage)))) return 0;

    block = &(*page)->glyphs[(c % 0x10000) >> GLYPH_BLOCK_SHIFT];
    if (!*block && !(*block = heap_alloc_zero(sizeof(WORD) * GLYPH_BLOCK_SIZE))) return 0;
    return ((*block)[(c % 0x10000) & GLYPH_BLOCK_MASK] = glyph);
}

static inline BOOL get_cache_glyph_widths(SCRIPT_CACHE *psc, WORD glyph, ABC *abc)
{
    static const ABC nil;
    ABC *block = ((ScriptCache *)*psc)->widths[glyph >> GLYPH_BLOCK_SHIFT];

    if (!block || !memcmp(&block[glyph & GLYPH_BLOCK_MASK], &nil, sizeof(ABC))) return FALSE;
    memcpy(abc, &block[glyph & GLYPH_BLOCK_MASK], sizeof(ABC));
    return TRUE;
}

static inline BOOL set_cache_glyph_widths(SCRIPT_CACHE *psc, WORD glyph, ABC *abc)
{
    ABC **block = &((ScriptCache *)*psc)->widths[glyph >> GLYPH_BLOCK_SHIFT];

    if (!*block && !(*block = heap_alloc_zero(sizeof(ABC) * GLYPH_BLOCK_SIZE))) return FALSE;
    memcpy(&(*block)[glyph & GLYPH_BLOCK_MASK], abc, sizeof(ABC));
    return TRUE;
}

static HRESULT init_script_cache(const HDC hdc, SCRIPT_CACHE *psc)
{
    ScriptCache *sc;
    int size;

    if (!psc) return E_INVALIDARG;
    if (*psc) return S_OK;
    if (!hdc) return E_PENDING;

    if (!(sc = heap_alloc_zero(sizeof(ScriptCache)))) return E_OUTOFMEMORY;
    if (!GetTextMetricsW(hdc, &sc->tm))
    {
        heap_free(sc);
        return E_INVALIDARG;
    }
    size = GetOutlineTextMetricsW(hdc, 0, NULL);
    if (size)
    {
        sc->otm = heap_alloc(size);
        sc->otm->otmSize = size;
        GetOutlineTextMetricsW(hdc, size, sc->otm);
    }
    if (!GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(LOGFONTW), &sc->lf))
    {
        heap_free(sc);
        return E_INVALIDARG;
    }
    sc->sfnt = (GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, NULL, 0)!=GDI_ERROR);
    if (!set_cache_font_properties(hdc, sc))
    {
        heap_free(sc);
        return E_INVALIDARG;
    }
    *psc = sc;
    TRACE("<- %p\n", sc);
    return S_OK;
}

static WCHAR mirror_char( WCHAR ch )
{
    extern const WCHAR wine_mirror_map[] DECLSPEC_HIDDEN;
    return ch + wine_mirror_map[wine_mirror_map[ch >> 8] + (ch & 0xff)];
}

static inline DWORD decode_surrogate_pair(LPCWSTR str, INT index, INT end)
{
    if (index < end-1 && IS_SURROGATE_PAIR(str[index],str[index+1]))
    {
        DWORD ch = 0x10000 + ((str[index] - 0xd800) << 10) + (str[index+1] - 0xdc00);
        TRACE("Surrogate Pair %x %x => %x\n",str[index], str[index+1], ch);
        return ch;
    }
    return 0;
}

static WORD get_char_script( LPCWSTR str, INT index, INT end, INT *consumed)
{
    static const WCHAR latin_punc[] = {'#','$','&','\'',',',';','<','>','?','@','\\','^','_','`','{','|','}','~', 0x00a0, 0};
    WORD type = 0, type2 = 0;
    DWORD ch;
    int i;

    *consumed = 1;

    if (str[index] == 0xc || str[index] == 0x20 || str[index] == 0x202f)
        return Script_CR;

    /* These punctuation characters are separated out as Latin punctuation */
    if (strchrW(latin_punc,str[index]))
        return Script_Punctuation2;

    /* These chars are itemized as Punctuation by Windows */
    if (str[index] == 0x2212 || str[index] == 0x2044)
        return Script_Punctuation;

    /* Currency Symbols by Unicode point */
    switch (str[index])
    {
        case 0x09f2:
        case 0x09f3: return Script_Bengali_Currency;
        case 0x0af1: return Script_Gujarati_Currency;
        case 0x0e3f: return Script_Thai_Currency;
        case 0x20aa: return Script_Hebrew_Currency;
        case 0x20ab: return Script_Vietnamese_Currency;
        case 0xfb29: return Script_Hebrew_Currency;
    }

    GetStringTypeW(CT_CTYPE1, &str[index], 1, &type);
    GetStringTypeW(CT_CTYPE2, &str[index], 1, &type2);

    if (type == 0)
        return SCRIPT_UNDEFINED;

    if (type & C1_CNTRL)
        return Script_Control;

    ch = decode_surrogate_pair(str, index, end);
    if (ch)
        *consumed = 2;
    else
        ch = str[index];

    i = 0;
    do
    {
        if (ch < scriptRanges[i].rangeFirst || scriptRanges[i].script == SCRIPT_UNDEFINED)
            break;

        if (ch >= scriptRanges[i].rangeFirst && ch <= scriptRanges[i].rangeLast)
        {
            if (scriptRanges[i].numericScript && (type & C1_DIGIT || type2 == C2_ARABICNUMBER))
                return scriptRanges[i].numericScript;
            if (scriptRanges[i].punctScript && type & C1_PUNCT)
                return scriptRanges[i].punctScript;
            return scriptRanges[i].script;
        }
        i++;
    } while (1);

    return SCRIPT_UNDEFINED;
}

static int compare_FindGlyph(const void *a, const void* b)
{
    const FindGlyph_struct *find = (FindGlyph_struct*)a;
    const WORD *idx= (WORD*)b;
    int rc = 0;

    if ( find->target > *idx)
        rc = 1;
    else if (find->target < *idx)
        rc = -1;

    if (!find->ascending)
        rc *= -1;
    return rc;
}

int USP10_FindGlyphInLogClust(const WORD* pwLogClust, int cChars, WORD target)
{
    FindGlyph_struct fgs;
    WORD *ptr;
    INT k;

    if (pwLogClust[0] < pwLogClust[cChars-1])
        fgs.ascending = TRUE;
    else
        fgs.ascending = FALSE;

    fgs.target = target;
    ptr = bsearch(&fgs, pwLogClust, cChars, sizeof(WORD), compare_FindGlyph);

    if (!ptr)
        return -1;

    for (k = (ptr - pwLogClust)-1; k >= 0 && pwLogClust[k] == target; k--)
    ;
    k++;

    return k;
}

/***********************************************************************
 *      ScriptFreeCache (USP10.@)
 *
 * Free a script cache.
 *
 * PARAMS
 *   psc [I/O] Script cache.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptFreeCache(SCRIPT_CACHE *psc)
{
    TRACE("%p\n", psc);

    if (psc && *psc)
    {
        unsigned int i;
        INT n;
        for (i = 0; i < GLYPH_MAX / GLYPH_BLOCK_SIZE; i++)
        {
            heap_free(((ScriptCache *)*psc)->widths[i]);
        }
        for (i = 0; i < NUM_PAGES; i++)
        {
            unsigned int j;
            if (((ScriptCache *)*psc)->page[i])
                for (j = 0; j < GLYPH_MAX / GLYPH_BLOCK_SIZE; j++)
                    heap_free(((ScriptCache *)*psc)->page[i]->glyphs[j]);
            heap_free(((ScriptCache *)*psc)->page[i]);
        }
        heap_free(((ScriptCache *)*psc)->GSUB_Table);
        heap_free(((ScriptCache *)*psc)->GDEF_Table);
        heap_free(((ScriptCache *)*psc)->CMAP_Table);
        heap_free(((ScriptCache *)*psc)->GPOS_Table);
        for (n = 0; n < ((ScriptCache *)*psc)->script_count; n++)
        {
            int j;
            for (j = 0; j < ((ScriptCache *)*psc)->scripts[n].language_count; j++)
            {
                int k;
                for (k = 0; k < ((ScriptCache *)*psc)->scripts[n].languages[j].feature_count; k++)
                    heap_free(((ScriptCache *)*psc)->scripts[n].languages[j].features[k].lookups);
                heap_free(((ScriptCache *)*psc)->scripts[n].languages[j].features);
            }
            for (j = 0; j < ((ScriptCache *)*psc)->scripts[n].default_language.feature_count; j++)
                heap_free(((ScriptCache *)*psc)->scripts[n].default_language.features[j].lookups);
            heap_free(((ScriptCache *)*psc)->scripts[n].default_language.features);
            heap_free(((ScriptCache *)*psc)->scripts[n].languages);
        }
        heap_free(((ScriptCache *)*psc)->scripts);
        heap_free(((ScriptCache *)*psc)->otm);
        heap_free(*psc);
        *psc = NULL;
    }
    return S_OK;
}

/***********************************************************************
 *      ScriptGetProperties (USP10.@)
 *
 * Retrieve a list of script properties.
 *
 * PARAMS
 *  props [I] Pointer to an array of SCRIPT_PROPERTIES pointers.
 *  num   [I] Pointer to the number of scripts.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 *
 * NOTES
 *  Behaviour matches WinXP.
 */
HRESULT WINAPI ScriptGetProperties(const SCRIPT_PROPERTIES ***props, int *num)
{
    TRACE("(%p,%p)\n", props, num);

    if (!props && !num) return E_INVALIDARG;

    if (num) *num = sizeof(script_props)/sizeof(script_props[0]);
    if (props) *props = script_props;

    return S_OK;
}

/***********************************************************************
 *      ScriptGetFontProperties (USP10.@)
 *
 * Get information on special glyphs.
 *
 * PARAMS
 *  hdc [I]   Device context.
 *  psc [I/O] Opaque pointer to a script cache.
 *  sfp [O]   Font properties structure.
 */
HRESULT WINAPI ScriptGetFontProperties(HDC hdc, SCRIPT_CACHE *psc, SCRIPT_FONTPROPERTIES *sfp)
{
    HRESULT hr;

    TRACE("%p,%p,%p\n", hdc, psc, sfp);

    if (!sfp) return E_INVALIDARG;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;

    if (sfp->cBytes != sizeof(SCRIPT_FONTPROPERTIES))
        return E_INVALIDARG;

    get_cache_font_properties(sfp, *psc);

    return S_OK;
}

/***********************************************************************
 *      ScriptRecordDigitSubstitution (USP10.@)
 *
 *  Record digit substitution settings for a given locale.
 *
 *  PARAMS
 *   locale [I] Locale identifier.
 *   sds    [I] Structure to record substitution settings.
 *
 *  RETURNS
 *   Success: S_OK
 *   Failure: E_POINTER if sds is NULL, E_INVALIDARG otherwise.
 *
 *  SEE ALSO
 *   http://blogs.msdn.com/michkap/archive/2006/02/22/536877.aspx
 */
HRESULT WINAPI ScriptRecordDigitSubstitution(LCID locale, SCRIPT_DIGITSUBSTITUTE *sds)
{
    DWORD plgid, sub;

    TRACE("0x%x, %p\n", locale, sds);

    /* This implementation appears to be correct for all languages, but it's
     * not clear if sds->DigitSubstitute is ever set to anything except 
     * CONTEXT or NONE in reality */

    if (!sds) return E_POINTER;

    locale = ConvertDefaultLocale(locale);

    if (!IsValidLocale(locale, LCID_INSTALLED))
        return E_INVALIDARG;

    plgid = PRIMARYLANGID(LANGIDFROMLCID(locale));
    sds->TraditionalDigitLanguage = plgid;

    if (plgid == LANG_ARABIC || plgid == LANG_FARSI)
        sds->NationalDigitLanguage = plgid;
    else
        sds->NationalDigitLanguage = LANG_ENGLISH;

    if (!GetLocaleInfoW(locale, LOCALE_IDIGITSUBSTITUTION | LOCALE_RETURN_NUMBER,
                        (LPWSTR)&sub, sizeof(sub)/sizeof(WCHAR))) return E_INVALIDARG;

    switch (sub)
    {
    case 0: 
        if (plgid == LANG_ARABIC || plgid == LANG_FARSI)
            sds->DigitSubstitute = SCRIPT_DIGITSUBSTITUTE_CONTEXT;
        else
            sds->DigitSubstitute = SCRIPT_DIGITSUBSTITUTE_NONE;
        break;
    case 1:
        sds->DigitSubstitute = SCRIPT_DIGITSUBSTITUTE_NONE;
        break;
    case 2:
        sds->DigitSubstitute = SCRIPT_DIGITSUBSTITUTE_NATIONAL;
        break;
    default:
        sds->DigitSubstitute = SCRIPT_DIGITSUBSTITUTE_TRADITIONAL;
        break;
    }

    sds->dwReserved = 0;
    return S_OK;
}

/***********************************************************************
 *      ScriptApplyDigitSubstitution (USP10.@)
 *
 *  Apply digit substitution settings.
 *
 *  PARAMS
 *   sds [I] Structure with recorded substitution settings.
 *   sc  [I] Script control structure.
 *   ss  [I] Script state structure.
 *
 *  RETURNS
 *   Success: S_OK
 *   Failure: E_INVALIDARG if sds is invalid. Otherwise an HRESULT.
 */
HRESULT WINAPI ScriptApplyDigitSubstitution(const SCRIPT_DIGITSUBSTITUTE *sds, 
                                            SCRIPT_CONTROL *sc, SCRIPT_STATE *ss)
{
    SCRIPT_DIGITSUBSTITUTE psds;

    TRACE("%p, %p, %p\n", sds, sc, ss);

    if (!sc || !ss) return E_POINTER;
    if (!sds)
    {
        sds = &psds;
        if (ScriptRecordDigitSubstitution(LOCALE_USER_DEFAULT, &psds) != S_OK)
            return E_INVALIDARG;
    }

    sc->uDefaultLanguage = LANG_ENGLISH;
    sc->fContextDigits = 0;
    ss->fDigitSubstitute = 0;

    switch (sds->DigitSubstitute) {
        case SCRIPT_DIGITSUBSTITUTE_CONTEXT:
        case SCRIPT_DIGITSUBSTITUTE_NATIONAL:
        case SCRIPT_DIGITSUBSTITUTE_NONE:
        case SCRIPT_DIGITSUBSTITUTE_TRADITIONAL:
            return S_OK;
        default:
            return E_INVALIDARG;
    }
}

static inline BOOL is_indic(WORD script)
{
    return (script >= Script_Devanagari && script <= Script_Malayalam_Numeric);
}

static inline WORD base_indic(WORD script)
{
    switch (script)
    {
        case Script_Devanagari:
        case Script_Devanagari_Numeric: return Script_Devanagari;
        case Script_Bengali:
        case Script_Bengali_Numeric:
        case Script_Bengali_Currency: return Script_Bengali;
        case Script_Gurmukhi:
        case Script_Gurmukhi_Numeric: return Script_Gurmukhi;
        case Script_Gujarati:
        case Script_Gujarati_Numeric:
        case Script_Gujarati_Currency: return Script_Gujarati;
        case Script_Oriya:
        case Script_Oriya_Numeric: return Script_Oriya;
        case Script_Tamil:
        case Script_Tamil_Numeric: return Script_Tamil;
        case Script_Telugu:
        case Script_Telugu_Numeric: return Script_Telugu;
        case Script_Kannada:
        case Script_Kannada_Numeric: return Script_Kannada;
        case Script_Malayalam:
        case Script_Malayalam_Numeric: return Script_Malayalam;
        default:
            return -1;
    };
}

static BOOL script_is_numeric(WORD script)
{
    return scriptInformation[script].props.fNumeric;
}

static HRESULT _ItemizeInternal(const WCHAR *pwcInChars, int cInChars,
                int cMaxItems, const SCRIPT_CONTROL *psControl,
                const SCRIPT_STATE *psState, SCRIPT_ITEM *pItems,
                OPENTYPE_TAG *pScriptTags, int *pcItems)
{

#define Numeric_space 0x0020
#define ZWSP 0x200B
#define ZWNJ 0x200C
#define ZWJ  0x200D

    int   cnt = 0, index = 0, str = 0;
    int   New_Script = -1;
    int   i;
    WORD  *levels = NULL;
    WORD  *layout_levels = NULL;
    WORD  *overrides = NULL;
    WORD  *strength = NULL;
    WORD  *scripts = NULL;
    WORD  baselevel = 0;
    WORD  baselayout = 0;
    BOOL  new_run;
    WORD  last_indic = -1;
    WORD layoutRTL = 0;
    BOOL forceLevels = FALSE;
    INT consumed = 0;
    HRESULT res = E_OUTOFMEMORY;

    TRACE("%s,%d,%d,%p,%p,%p,%p\n", debugstr_wn(pwcInChars, cInChars), cInChars, cMaxItems, 
          psControl, psState, pItems, pcItems);

    if (!pwcInChars || !cInChars || !pItems || cMaxItems < 2)
        return E_INVALIDARG;

    scripts = heap_alloc(cInChars * sizeof(WORD));
    if (!scripts)
        return E_OUTOFMEMORY;

    for (i = 0; i < cInChars; i++)
    {
        if (consumed <= 0)
        {
            scripts[i] = get_char_script(pwcInChars,i,cInChars,&consumed);
            consumed --;
        }
        else
        {
            scripts[i] = scripts[i-1];
            consumed --;
        }
        /* Devanagari danda (U+0964) and double danda (U+0965) are used for
           all Indic scripts */
        if ((pwcInChars[i] == 0x964 || pwcInChars[i] ==0x965) && last_indic > 0)
            scripts[i] = last_indic;
        else if (is_indic(scripts[i]))
            last_indic = base_indic(scripts[i]);

        /* Some unicode points :
           (Zero Width Space U+200B - Right-to-Left Mark U+200F)
           (Left Right Embed U+202A - Left Right Override U+202D)
           (Left Right Isolate U+2066 - Pop Directional Isolate U+2069)
           will force us into bidi mode */
        if (!forceLevels && ((pwcInChars[i] >= 0x200B && pwcInChars[i] <= 0x200F) ||
            (pwcInChars[i] >= 0x202A && pwcInChars[i] <= 0x202E) ||
            (pwcInChars[i] >= 0x2066 && pwcInChars[i] <= 0x2069)))

            forceLevels = TRUE;

        /* Diacritical marks merge with other scripts */
        if (scripts[i] == Script_Diacritical)
        {
            if (i > 0)
            {
                if (pScriptTags)
                    scripts[i] = scripts[i-1];
                else
                {
                    int j;
                    BOOL asian = FALSE;
                    WORD first_script = scripts[i-1];
                    for (j = i-1; j >= 0 &&  scripts[j] == first_script && pwcInChars[j] != Numeric_space; j--)
                    {
                        WORD original = scripts[j];
                        if (original == Script_Ideograph || original == Script_Kana || original == Script_Yi || original == Script_CJK_Han || original == Script_Bopomofo)
                        {
                            asian = TRUE;
                            break;
                        }
                        if (original != Script_MathAlpha && scriptInformation[scripts[j]].props.fComplex)
                            break;
                        scripts[j] = scripts[i];
                        if (original == Script_Punctuation2)
                            break;
                    }
                    if (j >= 0 && (scriptInformation[scripts[j]].props.fComplex || asian))
                        scripts[i] = scripts[j];
                }
            }
        }
    }

    for (i = 0; i < cInChars; i++)
    {
        /* Joiners get merged preferencially right */
        if (i > 0 && (pwcInChars[i] == ZWJ || pwcInChars[i] == ZWNJ || pwcInChars[i] == ZWSP))
        {
            int j;
            if (i+1 == cInChars)
                scripts[i] = scripts[i-1];
            else
            {
                for (j = i+1; j < cInChars; j++)
                {
                    if (pwcInChars[j] != ZWJ && pwcInChars[j] != ZWNJ
                            && pwcInChars[j] != ZWSP && pwcInChars[j] != Numeric_space)
                    {
                        scripts[i] = scripts[j];
                        break;
                    }
                }
            }
        }
    }

    if (psState && psControl)
    {
        levels = heap_alloc_zero(cInChars * sizeof(WORD));
        if (!levels)
            goto nomemory;

        overrides = heap_alloc_zero(cInChars * sizeof(WORD));
        if (!overrides)
            goto nomemory;

        layout_levels = heap_alloc_zero(cInChars * sizeof(WORD));
        if (!layout_levels)
            goto nomemory;

        if (psState->fOverrideDirection)
        {
            if (!forceLevels)
            {
                SCRIPT_STATE s = *psState;
                s.fOverrideDirection = FALSE;
                BIDI_DetermineLevels(pwcInChars, cInChars, &s, psControl, layout_levels, overrides);
                if (odd(layout_levels[0]))
                    forceLevels = TRUE;
                else for (i = 0; i < cInChars; i++)
                    if (layout_levels[i]!=layout_levels[0])
                    {
                        forceLevels = TRUE;
                        break;
                    }
            }

            BIDI_DetermineLevels(pwcInChars, cInChars, psState, psControl, levels, overrides);
        }
        else
        {
            BIDI_DetermineLevels(pwcInChars, cInChars, psState, psControl, levels, overrides);
            memcpy(layout_levels, levels, cInChars * sizeof(WORD));
        }
        baselevel = levels[0];
        baselayout = layout_levels[0];
        for (i = 0; i < cInChars; i++)
            if (levels[i]!=levels[0])
                break;
        if (i >= cInChars && !odd(baselevel) && !odd(psState->uBidiLevel) && !forceLevels)
        {
            heap_free(levels);
            heap_free(overrides);
            heap_free(layout_levels);
            overrides = NULL;
            levels = NULL;
            layout_levels = NULL;
        }
        else
        {
            static const WCHAR math_punc[] = {'#','$','%','+',',','-','.','/',':',0x2212, 0x2044, 0x00a0,0};
            static const WCHAR repeatable_math_punc[] = {'#','$','%','+','-','/',0x2212, 0x2044,0};

            strength = heap_alloc_zero(cInChars * sizeof(WORD));
            if (!strength)
                goto nomemory;
            BIDI_GetStrengths(pwcInChars, cInChars, psControl, strength);

            /* We currently mis-level leading Diacriticals */
            if (scripts[0] == Script_Diacritical)
                for (i = 0; i < cInChars && scripts[0] == Script_Diacritical; i++)
                {
                    levels[i] = odd(levels[i])?levels[i]+1:levels[i];
                    strength[i] = BIDI_STRONG;
                }

            /* Math punctuation bordered on both sides by numbers can be
               merged into the number */
            for (i = 0; i < cInChars; i++)
            {
                if (i > 0 && i < cInChars-1 &&
                    script_is_numeric(scripts[i-1]) &&
                    strchrW(math_punc, pwcInChars[i]))
                {
                    if (script_is_numeric(scripts[i+1]))
                    {
                        scripts[i] = scripts[i+1];
                        levels[i] = levels[i-1];
                        strength[i] = strength[i-1];
                        i++;
                    }
                    else if (strchrW(repeatable_math_punc, pwcInChars[i]))
                    {
                        int j;
                        for (j = i+1; j < cInChars; j++)
                        {
                            if (script_is_numeric(scripts[j]))
                            {
                                for(;i<j; i++)
                                {
                                    scripts[i] = scripts[j];
                                    levels[i] = levels[i-1];
                                    strength[i] = strength[i-1];
                                }
                            }
                            else if (pwcInChars[i] != pwcInChars[j]) break;
                        }
                    }
                }
            }

            for (i = 0; i < cInChars; i++)
            {
                /* Numerics at level 0 get bumped to level 2 */
                if (!overrides[i] && (levels[i] == 0 || (odd(psState->uBidiLevel)
                        && levels[i] == psState->uBidiLevel + 1)) && script_is_numeric(scripts[i]))
                {
                    levels[i] = 2;
                }

                /* Joiners get merged preferencially right */
                if (i > 0 && (pwcInChars[i] == ZWJ || pwcInChars[i] == ZWNJ || pwcInChars[i] == ZWSP))
                {
                    int j;
                    if (i+1 == cInChars && levels[i-1] == levels[i])
                        strength[i] = strength[i-1];
                    else
                        for (j = i+1; j < cInChars && levels[i] == levels[j]; j++)
                            if (pwcInChars[j] != ZWJ && pwcInChars[j] != ZWNJ
                                    && pwcInChars[j] != ZWSP && pwcInChars[j] != Numeric_space)
                            {
                                strength[i] = strength[j];
                                break;
                            }
                }
            }
            if (psControl->fMergeNeutralItems)
            {
                /* Merge the neutrals */
                for (i = 0; i < cInChars; i++)
                {
                    if (strength[i] == BIDI_NEUTRAL || strength[i] == BIDI_WEAK)
                    {
                        int j;
                        for (j = i; j > 0; j--)
                        {
                            if (levels[i] != levels[j])
                                break;
                            if ((strength[j] == BIDI_STRONG) || (strength[i] == BIDI_NEUTRAL && strength[j] == BIDI_WEAK))
                            {
                                scripts[i] = scripts[j];
                                strength[i] = strength[j];
                                break;
                            }
                        }
                    }
                    /* Try going the other way */
                    if (strength[i] == BIDI_NEUTRAL || strength[i] == BIDI_WEAK)
                    {
                        int j;
                        for (j = i; j < cInChars; j++)
                        {
                            if (levels[i] != levels[j])
                                break;
                            if ((strength[j] == BIDI_STRONG) || (strength[i] == BIDI_NEUTRAL && strength[j] == BIDI_WEAK))
                            {
                                scripts[i] = scripts[j];
                                strength[i] = strength[j];
                                break;
                            }
                        }
                    }
                }
            }
        }
    }

    while ((!levels || (levels && cnt+1 < cInChars && levels[cnt+1] == levels[0]))
            && (cnt < cInChars && pwcInChars[cnt] == Numeric_space))
        cnt++;

    if (cnt == cInChars) /* All Spaces */
    {
        cnt = 0;
        New_Script = scripts[cnt];
    }

    pItems[index].iCharPos = 0;
    pItems[index].a = scriptInformation[scripts[cnt]].a;
    if (pScriptTags)
        pScriptTags[index] = scriptInformation[scripts[cnt]].scriptTag;

    if (strength && strength[cnt] == BIDI_STRONG)
        str = strength[cnt];
    else if (strength)
        str = strength[0];

    cnt = 0;

    if (levels)
    {
        if (strength[cnt] == BIDI_STRONG)
            layoutRTL = odd(layout_levels[cnt]);
        else
            layoutRTL = (psState->uBidiLevel || odd(layout_levels[cnt]));
        if (overrides)
            pItems[index].a.s.fOverrideDirection = (overrides[cnt] != 0);
        pItems[index].a.fRTL = odd(levels[cnt]);
        if (script_is_numeric(pItems[index].a.eScript))
            pItems[index].a.fLayoutRTL = layoutRTL;
        else
            pItems[index].a.fLayoutRTL = pItems[index].a.fRTL;
        pItems[index].a.s.uBidiLevel = levels[cnt];
    }
    else if (!pItems[index].a.s.uBidiLevel || (overrides && overrides[cnt]))
    {
        if (pItems[index].a.s.uBidiLevel != baselevel)
            pItems[index].a.s.fOverrideDirection = TRUE;
        layoutRTL = odd(baselayout);
        pItems[index].a.s.uBidiLevel = baselevel;
        pItems[index].a.fRTL = odd(baselevel);
        if (script_is_numeric(pItems[index].a.eScript))
            pItems[index].a.fLayoutRTL = odd(baselayout);
        else
            pItems[index].a.fLayoutRTL = pItems[index].a.fRTL;
    }

    TRACE("New_Level=%i New_Strength=%i New_Script=%d, eScript=%d index=%d cnt=%d iCharPos=%d\n",
          levels?levels[cnt]:-1, str, New_Script, pItems[index].a.eScript, index, cnt,
          pItems[index].iCharPos);

    for (cnt=1; cnt < cInChars; cnt++)
    {
        if(pwcInChars[cnt] != Numeric_space)
            New_Script = scripts[cnt];
        else if (levels)
        {
            int j = 1;
            while (cnt + j < cInChars - 1 && pwcInChars[cnt+j] == Numeric_space && levels[cnt] == levels[cnt+j])
                j++;
            if (cnt + j < cInChars && levels[cnt] == levels[cnt+j])
                New_Script = scripts[cnt+j];
            else
                New_Script = scripts[cnt];
        }

        new_run = FALSE;
        /* merge space strengths*/
        if (strength && strength[cnt] == BIDI_STRONG && str != BIDI_STRONG && New_Script == pItems[index].a.eScript)
            str = BIDI_STRONG;

        if (strength && strength[cnt] == BIDI_NEUTRAL && str == BIDI_STRONG && pwcInChars[cnt] != Numeric_space && New_Script == pItems[index].a.eScript)
            str = BIDI_NEUTRAL;

        /* changes in level */
        if (levels && (levels[cnt] != pItems[index].a.s.uBidiLevel))
        {
            TRACE("Level break(%i/%i)\n",pItems[index].a.s.uBidiLevel,levels[cnt]);
            new_run = TRUE;
        }
        /* changes in strength */
        else if (strength && pwcInChars[cnt] != Numeric_space && str != strength[cnt])
        {
            TRACE("Strength break (%i/%i)\n",str,strength[cnt]);
            new_run = TRUE;
        }
        /* changes in script */
        else if (((pwcInChars[cnt] != Numeric_space) && (New_Script != -1) && (New_Script != pItems[index].a.eScript)) || (New_Script == Script_Control))
        {
            TRACE("Script break(%i/%i)\n",pItems[index].a.eScript,New_Script);
            new_run = TRUE;
        }

        if (!new_run && strength && str == BIDI_STRONG)
        {
            layoutRTL = odd(layout_levels[cnt]);
            if (script_is_numeric(pItems[index].a.eScript))
                pItems[index].a.fLayoutRTL = layoutRTL;
        }

        if (new_run)
        {
            TRACE("New_Level = %i, New_Strength = %i, New_Script=%d, eScript=%d\n", levels?levels[cnt]:-1, strength?strength[cnt]:str, New_Script, pItems[index].a.eScript);

            index++;
            if  (index+1 > cMaxItems)
                goto nomemory;

            if (strength)
                str = strength[cnt];

            pItems[index].iCharPos = cnt;
            memset(&pItems[index].a, 0, sizeof(SCRIPT_ANALYSIS));

            pItems[index].a = scriptInformation[New_Script].a;
            if (pScriptTags)
                pScriptTags[index] = scriptInformation[New_Script].scriptTag;
            if (levels)
            {
                if (overrides)
                    pItems[index].a.s.fOverrideDirection = (overrides[cnt] != 0);
                if (layout_levels[cnt] == 0)
                    layoutRTL = 0;
                else
                    layoutRTL = (layoutRTL || odd(layout_levels[cnt]));
                pItems[index].a.fRTL = odd(levels[cnt]);
                if (script_is_numeric(pItems[index].a.eScript))
                    pItems[index].a.fLayoutRTL = layoutRTL;
                else
                    pItems[index].a.fLayoutRTL = pItems[index].a.fRTL;
                pItems[index].a.s.uBidiLevel = levels[cnt];
            }
            else if (!pItems[index].a.s.uBidiLevel || (overrides && overrides[cnt]))
            {
                if (pItems[index].a.s.uBidiLevel != baselevel)
                    pItems[index].a.s.fOverrideDirection = TRUE;
                pItems[index].a.s.uBidiLevel = baselevel;
                pItems[index].a.fRTL = odd(baselevel);
                if (script_is_numeric(pItems[index].a.eScript))
                    pItems[index].a.fLayoutRTL = layoutRTL;
                else
                    pItems[index].a.fLayoutRTL = pItems[index].a.fRTL;
            }

            TRACE("index=%d cnt=%d iCharPos=%d\n", index, cnt, pItems[index].iCharPos);
        }
    }

    /* While not strictly necessary according to the spec, make sure the n+1
     * item is set up to prevent random behaviour if the caller erroneously
     * checks the n+1 structure                                              */
    index++;
    if (index + 1 > cMaxItems) goto nomemory;
    memset(&pItems[index].a, 0, sizeof(SCRIPT_ANALYSIS));

    TRACE("index=%d cnt=%d iCharPos=%d\n", index, cnt, pItems[index].iCharPos);

    /*  Set one SCRIPT_STATE item being returned  */
    if (pcItems) *pcItems = index;

    /*  Set SCRIPT_ITEM                                     */
    pItems[index].iCharPos = cnt;         /* the last item contains the ptr to the lastchar */
    res = S_OK;
nomemory:
    heap_free(levels);
    heap_free(overrides);
    heap_free(layout_levels);
    heap_free(strength);
    heap_free(scripts);
    return res;
}

/***********************************************************************
 *      ScriptItemizeOpenType (USP10.@)
 *
 * Split a Unicode string into shapeable parts.
 *
 * PARAMS
 *  pwcInChars  [I] String to split.
 *  cInChars    [I] Number of characters in pwcInChars.
 *  cMaxItems   [I] Maximum number of items to return.
 *  psControl   [I] Pointer to a SCRIPT_CONTROL structure.
 *  psState     [I] Pointer to a SCRIPT_STATE structure.
 *  pItems      [O] Buffer to receive SCRIPT_ITEM structures.
 *  pScriptTags [O] Buffer to receive OPENTYPE_TAGs.
 *  pcItems     [O] Number of script items returned.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptItemizeOpenType(const WCHAR *pwcInChars, int cInChars, int cMaxItems,
                             const SCRIPT_CONTROL *psControl, const SCRIPT_STATE *psState,
                             SCRIPT_ITEM *pItems, OPENTYPE_TAG *pScriptTags, int *pcItems)
{
    return _ItemizeInternal(pwcInChars, cInChars, cMaxItems, psControl, psState, pItems, pScriptTags, pcItems);
}

/***********************************************************************
 *      ScriptItemize (USP10.@)
 *
 * Split a Unicode string into shapeable parts.
 *
 * PARAMS
 *  pwcInChars [I] String to split.
 *  cInChars   [I] Number of characters in pwcInChars.
 *  cMaxItems  [I] Maximum number of items to return.
 *  psControl  [I] Pointer to a SCRIPT_CONTROL structure.
 *  psState    [I] Pointer to a SCRIPT_STATE structure.
 *  pItems     [O] Buffer to receive SCRIPT_ITEM structures.
 *  pcItems    [O] Number of script items returned.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptItemize(const WCHAR *pwcInChars, int cInChars, int cMaxItems,
                             const SCRIPT_CONTROL *psControl, const SCRIPT_STATE *psState,
                             SCRIPT_ITEM *pItems, int *pcItems)
{
    return _ItemizeInternal(pwcInChars, cInChars, cMaxItems, psControl, psState, pItems, NULL, pcItems);
}

static inline int getGivenTabWidth(ScriptCache *psc, SCRIPT_TABDEF *pTabdef, int charPos, int current_x)
{
    int defWidth;
    int cTabStops=0;
    INT *lpTabPos = NULL;
    INT nTabOrg = 0;
    INT x = 0;

    if (pTabdef)
        lpTabPos = pTabdef->pTabStops;

    if (pTabdef && pTabdef->iTabOrigin)
    {
        if (pTabdef->iScale)
            nTabOrg = (pTabdef->iTabOrigin * pTabdef->iScale)/4;
        else
            nTabOrg = pTabdef->iTabOrigin * psc->tm.tmAveCharWidth;
    }

    if (pTabdef)
        cTabStops = pTabdef->cTabStops;

    if (cTabStops == 1)
    {
        if (pTabdef->iScale)
            defWidth = ((pTabdef->pTabStops[0])*pTabdef->iScale) / 4;
        else
            defWidth = (pTabdef->pTabStops[0])*psc->tm.tmAveCharWidth;
        cTabStops = 0;
    }
    else
        defWidth = 8 * psc->tm.tmAveCharWidth;

    for (; cTabStops>0 ; lpTabPos++, cTabStops--)
    {
        int position = *lpTabPos;
        if (position < 0)
            position = -1 * position;
        if (pTabdef->iScale)
            position = (position * pTabdef->iScale) / 4;
        else
            position = position * psc->tm.tmAveCharWidth;

        if( nTabOrg + position > current_x)
        {
            if( *lpTabPos >= 0)
            {
                /* a left aligned tab */
                x = (nTabOrg + *lpTabPos) - current_x;
                break;
            }
            else
            {
                FIXME("Negative tabstop\n");
                break;
            }
        }
    }
    if ((!cTabStops) && (defWidth > 0))
        x =((((current_x - nTabOrg) / defWidth)+1) * defWidth) - current_x;
    else if ((!cTabStops) && (defWidth < 0))
        FIXME("TODO: Negative defWidth\n");

    return x;
}

/***********************************************************************
 * Helper function for ScriptStringAnalyse
 */
static BOOL requires_fallback(HDC hdc, SCRIPT_CACHE *psc, SCRIPT_ANALYSIS *psa,
                              const WCHAR *pwcInChars, int cChars )
{
    /* FIXME: When to properly fallback is still a bit of a mystery */
    WORD *glyphs;

    if (psa->fNoGlyphIndex)
        return FALSE;

    if (init_script_cache(hdc, psc) != S_OK)
        return FALSE;

    if (SHAPE_CheckFontForRequiredFeatures(hdc, (ScriptCache *)*psc, psa) != S_OK)
        return TRUE;

    glyphs = heap_alloc(sizeof(WORD) * cChars);
    if (!glyphs)
        return FALSE;
    if (ScriptGetCMap(hdc, psc, pwcInChars, cChars, 0, glyphs) != S_OK)
    {
        heap_free(glyphs);
        return TRUE;
    }
    heap_free(glyphs);

    return FALSE;
}

static void find_fallback_font(DWORD scriptid, LPWSTR FaceName)
{
    HKEY hkey;

    if (!RegOpenKeyA(HKEY_CURRENT_USER, "Software\\Wine\\Uniscribe\\Fallback", &hkey))
    {
        static const WCHAR szFmt[] = {'%','x',0};
        WCHAR value[10];
        DWORD count = LF_FACESIZE * sizeof(WCHAR);
        DWORD type;

        sprintfW(value, szFmt, scriptInformation[scriptid].scriptTag);
        if (RegQueryValueExW(hkey, value, 0, &type, (LPBYTE)FaceName, &count))
            lstrcpyW(FaceName,scriptInformation[scriptid].fallbackFont);
        RegCloseKey(hkey);
    }
    else
        lstrcpyW(FaceName,scriptInformation[scriptid].fallbackFont);
}

/***********************************************************************
 *      ScriptStringAnalyse (USP10.@)
 *
 */
HRESULT WINAPI ScriptStringAnalyse(HDC hdc, const void *pString, int cString,
                                   int cGlyphs, int iCharset, DWORD dwFlags,
                                   int iReqWidth, SCRIPT_CONTROL *psControl,
                                   SCRIPT_STATE *psState, const int *piDx,
                                   SCRIPT_TABDEF *pTabdef, const BYTE *pbInClass,
                                   SCRIPT_STRING_ANALYSIS *pssa)
{
    HRESULT hr = E_OUTOFMEMORY;
    StringAnalysis *analysis = NULL;
    SCRIPT_CONTROL sControl;
    SCRIPT_STATE sState;
    int i, num_items = 255;
    BYTE   *BidiLevel;
    WCHAR *iString = NULL;

    TRACE("(%p,%p,%d,%d,%d,0x%x,%d,%p,%p,%p,%p,%p,%p)\n",
          hdc, pString, cString, cGlyphs, iCharset, dwFlags, iReqWidth,
          psControl, psState, piDx, pTabdef, pbInClass, pssa);

    if (iCharset != -1)
    {
        FIXME("Only Unicode strings are supported\n");
        return E_INVALIDARG;
    }
    if (cString < 1 || !pString) return E_INVALIDARG;
    if ((dwFlags & SSA_GLYPHS) && !hdc) return E_PENDING;

    if (!(analysis = heap_alloc_zero(sizeof(StringAnalysis)))) return E_OUTOFMEMORY;
    if (!(analysis->pItem = heap_alloc_zero(num_items * sizeof(SCRIPT_ITEM) + 1))) goto error;

    /* FIXME: handle clipping */
    analysis->clip_len = cString;
    analysis->hdc = hdc;
    analysis->dwFlags = dwFlags;

    if (psState)
        sState = *psState;
    else
        memset(&sState, 0, sizeof(SCRIPT_STATE));

    if (psControl)
        sControl = *psControl;
    else
        memset(&sControl, 0, sizeof(SCRIPT_CONTROL));

    if (dwFlags & SSA_PASSWORD)
    {
        iString = heap_alloc(sizeof(WCHAR)*cString);
        if (!iString)
        {
            hr = E_OUTOFMEMORY;
            goto error;
        }
        for (i = 0; i < cString; i++)
            iString[i] = *((const WCHAR *)pString);
        pString = iString;
    }

    hr = ScriptItemize(pString, cString, num_items, &sControl, &sState, analysis->pItem,
                       &analysis->numItems);

    if (FAILED(hr))
    {
        if (hr == E_OUTOFMEMORY)
            hr = E_INVALIDARG;
        goto error;
    }

    /* set back to out of memory for default goto error behaviour */
    hr = E_OUTOFMEMORY;

    if (dwFlags & SSA_BREAK)
    {
        if ((analysis->logattrs = heap_alloc(sizeof(SCRIPT_LOGATTR) * cString)))
        {
            for (i = 0; i < analysis->numItems; i++)
                ScriptBreak(&((LPWSTR)pString)[analysis->pItem[i].iCharPos], analysis->pItem[i+1].iCharPos - analysis->pItem[i].iCharPos, &analysis->pItem[i].a, &analysis->logattrs[analysis->pItem[i].iCharPos]);
        }
        else
            goto error;
    }

    if (!(analysis->logical2visual = heap_alloc_zero(sizeof(int) * analysis->numItems)))
        goto error;
    if (!(BidiLevel = heap_alloc_zero(analysis->numItems)))
        goto error;

    if (dwFlags & SSA_GLYPHS)
    {
        int tab_x = 0;
        if (!(analysis->glyphs = heap_alloc_zero(sizeof(StringGlyphs) * analysis->numItems)))
        {
            heap_free(BidiLevel);
            goto error;
        }

        for (i = 0; i < analysis->numItems; i++)
        {
            SCRIPT_CACHE *sc = (SCRIPT_CACHE*)&analysis->glyphs[i].sc;
            int cChar = analysis->pItem[i+1].iCharPos - analysis->pItem[i].iCharPos;
            int numGlyphs = 1.5 * cChar + 16;
            WORD *glyphs = heap_alloc_zero(sizeof(WORD) * numGlyphs);
            WORD *pwLogClust = heap_alloc_zero(sizeof(WORD) * cChar);
            int *piAdvance = heap_alloc_zero(sizeof(int) * numGlyphs);
            SCRIPT_VISATTR *psva = heap_alloc_zero(sizeof(SCRIPT_VISATTR) * numGlyphs);
            GOFFSET *pGoffset = heap_alloc_zero(sizeof(GOFFSET) * numGlyphs);
            ABC *abc = heap_alloc_zero(sizeof(ABC));
            int numGlyphsReturned;
            HFONT originalFont = 0x0;

            /* FIXME: non unicode strings */
            const WCHAR* pStr = (const WCHAR*)pString;
            analysis->glyphs[i].fallbackFont = NULL;

            if (!glyphs || !pwLogClust || !piAdvance || !psva || !pGoffset || !abc)
            {
                heap_free (BidiLevel);
                heap_free (glyphs);
                heap_free (pwLogClust);
                heap_free (piAdvance);
                heap_free (psva);
                heap_free (pGoffset);
                heap_free (abc);
                hr = E_OUTOFMEMORY;
                goto error;
            }

            if ((dwFlags & SSA_FALLBACK) && requires_fallback(hdc, sc, &analysis->pItem[i].a, &pStr[analysis->pItem[i].iCharPos], cChar))
            {
                LOGFONTW lf;
                GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), & lf);
                lf.lfCharSet = scriptInformation[analysis->pItem[i].a.eScript].props.bCharSet;
                lf.lfFaceName[0] = 0;
                find_fallback_font(analysis->pItem[i].a.eScript, lf.lfFaceName);
                if (lf.lfFaceName[0])
                {
                    analysis->glyphs[i].fallbackFont = CreateFontIndirectW(&lf);
                    if (analysis->glyphs[i].fallbackFont)
                    {
                        ScriptFreeCache(sc);
                        originalFont = SelectObject(hdc, analysis->glyphs[i].fallbackFont);
                    }
                }
            }

            /* FIXME: When we properly shape Hangul remove this check */
            if ((dwFlags & SSA_LINK) && !analysis->glyphs[i].fallbackFont && analysis->pItem[i].a.eScript == Script_Hangul)
                analysis->pItem[i].a.fNoGlyphIndex = TRUE;

            if ((dwFlags & SSA_LINK) && !analysis->glyphs[i].fallbackFont && !scriptInformation[analysis->pItem[i].a.eScript].props.fComplex && !analysis->pItem[i].a.fRTL)
                analysis->pItem[i].a.fNoGlyphIndex = TRUE;

            ScriptShape(hdc, sc, &pStr[analysis->pItem[i].iCharPos], cChar, numGlyphs,
                        &analysis->pItem[i].a, glyphs, pwLogClust, psva, &numGlyphsReturned);
            hr = ScriptPlace(hdc, sc, glyphs, numGlyphsReturned, psva, &analysis->pItem[i].a,
                             piAdvance, pGoffset, abc);
            if (originalFont)
                SelectObject(hdc,originalFont);

            if (dwFlags & SSA_TAB)
            {
                int tabi = 0;
                for (tabi = 0; tabi < cChar; tabi++)
                {
                    if (pStr[analysis->pItem[i].iCharPos+tabi] == 0x0009)
                        piAdvance[tabi] = getGivenTabWidth(analysis->glyphs[i].sc, pTabdef, analysis->pItem[i].iCharPos+tabi, tab_x);
                    tab_x+=piAdvance[tabi];
                }
            }

            analysis->glyphs[i].numGlyphs = numGlyphsReturned;
            analysis->glyphs[i].glyphs = glyphs;
            analysis->glyphs[i].pwLogClust = pwLogClust;
            analysis->glyphs[i].piAdvance = piAdvance;
            analysis->glyphs[i].psva = psva;
            analysis->glyphs[i].pGoffset = pGoffset;
            analysis->glyphs[i].abc = abc;
            analysis->glyphs[i].iMaxPosX= -1;

            BidiLevel[i] = analysis->pItem[i].a.s.uBidiLevel;
        }
    }
    else
    {
        for (i = 0; i < analysis->numItems; i++)
            BidiLevel[i] = analysis->pItem[i].a.s.uBidiLevel;
    }

    ScriptLayout(analysis->numItems, BidiLevel, NULL, analysis->logical2visual);
    heap_free(BidiLevel);

    *pssa = analysis;
    heap_free(iString);
    return S_OK;

error:
    heap_free(iString);
    heap_free(analysis->glyphs);
    heap_free(analysis->logattrs);
    heap_free(analysis->pItem);
    heap_free(analysis->logical2visual);
    heap_free(analysis);
    return hr;
}

static inline BOOL does_glyph_start_cluster(const SCRIPT_VISATTR *pva, const WORD *pwLogClust, int cChars, int glyph, int direction)
{
    if (pva[glyph].fClusterStart)
        return TRUE;
    if (USP10_FindGlyphInLogClust(pwLogClust, cChars, glyph) >= 0)
        return TRUE;

    return FALSE;
}


static HRESULT SS_ItemOut( SCRIPT_STRING_ANALYSIS ssa,
                           int iX,
                           int iY,
                           int iItem,
                           int cStart,
                           int cEnd,
                           UINT uOptions,
                           const RECT *prc,
                           BOOL fSelected,
                           BOOL fDisabled)
{
    StringAnalysis *analysis;
    int off_x = 0;
    HRESULT hr;
    COLORREF BkColor = 0x0;
    COLORREF TextColor = 0x0;
    INT BkMode = 0;
    INT runStart, runEnd;
    INT iGlyph, cGlyphs;
    HFONT oldFont = 0x0;
    RECT  crc;
    int i;

    TRACE("(%p,%d,%d,%d,%d,%d, 0x%1x, %d, %d)\n",
         ssa, iX, iY, iItem, cStart, cEnd, uOptions, fSelected, fDisabled);

    if (!(analysis = ssa)) return E_INVALIDARG;

    if ((cStart >= 0 && analysis->pItem[iItem+1].iCharPos <= cStart) ||
         (cEnd >= 0 && analysis->pItem[iItem].iCharPos >= cEnd))
            return S_OK;

    CopyRect(&crc,prc);
    if (fSelected)
    {
        BkMode = GetBkMode(analysis->hdc);
        SetBkMode( analysis->hdc, OPAQUE);
        BkColor = GetBkColor(analysis->hdc);
        SetBkColor(analysis->hdc, GetSysColor(COLOR_HIGHLIGHT));
        if (!fDisabled)
        {
            TextColor = GetTextColor(analysis->hdc);
            SetTextColor(analysis->hdc, GetSysColor(COLOR_HIGHLIGHTTEXT));
        }
    }
    if (analysis->glyphs[iItem].fallbackFont)
        oldFont = SelectObject(analysis->hdc, analysis->glyphs[iItem].fallbackFont);

    if (cStart >= 0 && analysis->pItem[iItem+1].iCharPos > cStart && analysis->pItem[iItem].iCharPos <= cStart)
        runStart = cStart - analysis->pItem[iItem].iCharPos;
    else
        runStart =  0;
    if (cEnd >= 0 && analysis->pItem[iItem+1].iCharPos > cEnd && analysis->pItem[iItem].iCharPos <= cEnd)
        runEnd = (cEnd-1) - analysis->pItem[iItem].iCharPos;
    else
        runEnd = (analysis->pItem[iItem+1].iCharPos - analysis->pItem[iItem].iCharPos) - 1;

    if (analysis->pItem[iItem].a.fRTL)
    {
        if (cEnd >= 0 && cEnd < analysis->pItem[iItem+1].iCharPos)
            ScriptStringCPtoX(ssa, cEnd, FALSE, &off_x);
        else
            ScriptStringCPtoX(ssa, analysis->pItem[iItem+1].iCharPos-1, TRUE, &off_x);
        crc.left = iX + off_x;
    }
    else
    {
        if (cStart >=0 && runStart)
            ScriptStringCPtoX(ssa, cStart, FALSE, &off_x);
        else
            ScriptStringCPtoX(ssa, analysis->pItem[iItem].iCharPos, FALSE, &off_x);
        crc.left = iX + off_x;
    }

    if (analysis->pItem[iItem].a.fRTL)
        iGlyph = analysis->glyphs[iItem].pwLogClust[runEnd];
    else
        iGlyph = analysis->glyphs[iItem].pwLogClust[runStart];

    if (analysis->pItem[iItem].a.fRTL)
        cGlyphs = analysis->glyphs[iItem].pwLogClust[runStart] - iGlyph;
    else
        cGlyphs = analysis->glyphs[iItem].pwLogClust[runEnd] - iGlyph;

    cGlyphs++;

    /* adjust for cluster glyphs when starting */
    if (analysis->pItem[iItem].a.fRTL)
        i = analysis->pItem[iItem+1].iCharPos - 1;
    else
        i = analysis->pItem[iItem].iCharPos;

    for (; i >=analysis->pItem[iItem].iCharPos && i < analysis->pItem[iItem+1].iCharPos; (analysis->pItem[iItem].a.fRTL)?i--:i++)
    {
        if (analysis->glyphs[iItem].pwLogClust[i - analysis->pItem[iItem].iCharPos] == iGlyph)
        {
            if (analysis->pItem[iItem].a.fRTL)
                ScriptStringCPtoX(ssa, i, TRUE, &off_x);
            else
                ScriptStringCPtoX(ssa, i, FALSE, &off_x);
            break;
        }
    }

    if (cEnd < 0 || scriptInformation[analysis->pItem[iItem].a.eScript].props.fNeedsCaretInfo)
    {
        INT direction;
        INT clust_glyph;

        clust_glyph = iGlyph + cGlyphs;
        if (analysis->pItem[iItem].a.fRTL)
            direction = -1;
        else
            direction = 1;

        while(clust_glyph < analysis->glyphs[iItem].numGlyphs &&
              !does_glyph_start_cluster(analysis->glyphs[iItem].psva, analysis->glyphs[iItem].pwLogClust, (analysis->pItem[iItem+1].iCharPos - analysis->pItem[iItem].iCharPos), clust_glyph, direction))
        {
            cGlyphs++;
            clust_glyph++;
        }
    }

    hr = ScriptTextOut(analysis->hdc,
                       (SCRIPT_CACHE *)&analysis->glyphs[iItem].sc, iX + off_x,
                       iY, uOptions, &crc, &analysis->pItem[iItem].a, NULL, 0,
                       &analysis->glyphs[iItem].glyphs[iGlyph], cGlyphs,
                       &analysis->glyphs[iItem].piAdvance[iGlyph], NULL,
                       &analysis->glyphs[iItem].pGoffset[iGlyph]);

    TRACE("ScriptTextOut hr=%08x\n", hr);

    if (fSelected)
    {
        SetBkColor(analysis->hdc, BkColor);
        SetBkMode( analysis->hdc, BkMode);
        if (!fDisabled)
            SetTextColor(analysis->hdc, TextColor);
    }
    if (analysis->glyphs[iItem].fallbackFont)
        SelectObject(analysis->hdc, oldFont);

    return hr;
}

/***********************************************************************
 *      ScriptStringOut (USP10.@)
 *
 * This function takes the output of ScriptStringAnalyse and joins the segments
 * of glyphs and passes the resulting string to ScriptTextOut.  ScriptStringOut
 * only processes glyphs.
 *
 * Parameters:
 *  ssa       [I] buffer to hold the analysed string components
 *  iX        [I] X axis displacement for output
 *  iY        [I] Y axis displacement for output
 *  uOptions  [I] flags controlling output processing
 *  prc       [I] rectangle coordinates
 *  iMinSel   [I] starting pos for substringing output string
 *  iMaxSel   [I] ending pos for substringing output string
 *  fDisabled [I] controls text highlighting
 *
 *  RETURNS
 *   Success: S_OK
 *   Failure: is the value returned by ScriptTextOut
 */
HRESULT WINAPI ScriptStringOut(SCRIPT_STRING_ANALYSIS ssa,
                               int iX,
                               int iY, 
                               UINT uOptions, 
                               const RECT *prc, 
                               int iMinSel, 
                               int iMaxSel,
                               BOOL fDisabled)
{
    StringAnalysis *analysis;
    int   item;
    HRESULT hr;

    TRACE("(%p,%d,%d,0x%08x,%s,%d,%d,%d)\n",
         ssa, iX, iY, uOptions, wine_dbgstr_rect(prc), iMinSel, iMaxSel, fDisabled);

    if (!(analysis = ssa)) return E_INVALIDARG;
    if (!(analysis->dwFlags & SSA_GLYPHS)) return E_INVALIDARG;

    for (item = 0; item < analysis->numItems; item++)
    {
        hr = SS_ItemOut( ssa, iX, iY, analysis->logical2visual[item], -1, -1, uOptions, prc, FALSE, fDisabled);
        if (FAILED(hr))
            return hr;
    }

    if (iMinSel < iMaxSel && (iMinSel > 0 || iMaxSel > 0))
    {
        if (iMaxSel > 0 &&  iMinSel < 0)
            iMinSel = 0;
        for (item = 0; item < analysis->numItems; item++)
        {
            hr = SS_ItemOut( ssa, iX, iY, analysis->logical2visual[item], iMinSel, iMaxSel, uOptions, prc, TRUE, fDisabled);
            if (FAILED(hr))
                return hr;
        }
    }

    return S_OK;
}

/***********************************************************************
 *      ScriptStringCPtoX (USP10.@)
 *
 */
HRESULT WINAPI ScriptStringCPtoX(SCRIPT_STRING_ANALYSIS ssa, int icp, BOOL fTrailing, int* pX)
{
    int item;
    int runningX = 0;
    StringAnalysis* analysis = ssa;

    TRACE("(%p), %d, %d, (%p)\n", ssa, icp, fTrailing, pX);

    if (!ssa || !pX) return S_FALSE;
    if (!(analysis->dwFlags & SSA_GLYPHS)) return S_FALSE;

    /* icp out of range */
    if(icp < 0)
    {
        analysis->invalid = TRUE;
        return E_INVALIDARG;
    }

    for(item=0; item<analysis->numItems; item++)
    {
        int CP, i;
        int offset;

        i = analysis->logical2visual[item];
        CP = analysis->pItem[i+1].iCharPos - analysis->pItem[i].iCharPos;
        /* initialize max extents for uninitialized runs */
        if (analysis->glyphs[i].iMaxPosX == -1)
        {
            if (analysis->pItem[i].a.fRTL)
                ScriptCPtoX(0, FALSE, CP, analysis->glyphs[i].numGlyphs, analysis->glyphs[i].pwLogClust,
                            analysis->glyphs[i].psva, analysis->glyphs[i].piAdvance,
                            &analysis->pItem[i].a, &analysis->glyphs[i].iMaxPosX);
            else
                ScriptCPtoX(CP, TRUE, CP, analysis->glyphs[i].numGlyphs, analysis->glyphs[i].pwLogClust,
                            analysis->glyphs[i].psva, analysis->glyphs[i].piAdvance,
                            &analysis->pItem[i].a, &analysis->glyphs[i].iMaxPosX);
        }

        if (icp >= analysis->pItem[i+1].iCharPos || icp < analysis->pItem[i].iCharPos)
        {
            runningX += analysis->glyphs[i].iMaxPosX;
            continue;
        }

        icp -= analysis->pItem[i].iCharPos;
        ScriptCPtoX(icp, fTrailing, CP, analysis->glyphs[i].numGlyphs, analysis->glyphs[i].pwLogClust,
                    analysis->glyphs[i].psva, analysis->glyphs[i].piAdvance,
                    &analysis->pItem[i].a, &offset);
        runningX += offset;

        *pX = runningX;
        return S_OK;
    }

    /* icp out of range */
    analysis->invalid = TRUE;
    return E_INVALIDARG;
}

/***********************************************************************
 *      ScriptStringXtoCP (USP10.@)
 *
 */
HRESULT WINAPI ScriptStringXtoCP(SCRIPT_STRING_ANALYSIS ssa, int iX, int* piCh, int* piTrailing)
{
    StringAnalysis* analysis = ssa;
    int item;

    TRACE("(%p), %d, (%p), (%p)\n", ssa, iX, piCh, piTrailing);

    if (!ssa || !piCh || !piTrailing) return S_FALSE;
    if (!(analysis->dwFlags & SSA_GLYPHS)) return S_FALSE;

    /* out of range */
    if(iX < 0)
    {
        if (analysis->pItem[0].a.fRTL)
        {
            *piCh = 1;
            *piTrailing = FALSE;
        }
        else
        {
            *piCh = -1;
            *piTrailing = TRUE;
        }
        return S_OK;
    }

    for(item=0; item<analysis->numItems; item++)
    {
        int i;
        int CP;

        for (i = 0; i < analysis->numItems && analysis->logical2visual[i] != item; i++)
        /* nothing */;

        CP = analysis->pItem[i+1].iCharPos - analysis->pItem[i].iCharPos;
        /* initialize max extents for uninitialized runs */
        if (analysis->glyphs[i].iMaxPosX == -1)
        {
            if (analysis->pItem[i].a.fRTL)
                ScriptCPtoX(0, FALSE, CP, analysis->glyphs[i].numGlyphs, analysis->glyphs[i].pwLogClust,
                            analysis->glyphs[i].psva, analysis->glyphs[i].piAdvance,
                            &analysis->pItem[i].a, &analysis->glyphs[i].iMaxPosX);
            else
                ScriptCPtoX(CP, TRUE, CP, analysis->glyphs[i].numGlyphs, analysis->glyphs[i].pwLogClust,
                            analysis->glyphs[i].psva, analysis->glyphs[i].piAdvance,
                            &analysis->pItem[i].a, &analysis->glyphs[i].iMaxPosX);
        }

        if (iX > analysis->glyphs[i].iMaxPosX)
        {
            iX -= analysis->glyphs[i].iMaxPosX;
            continue;
        }

        ScriptXtoCP(iX, CP, analysis->glyphs[i].numGlyphs, analysis->glyphs[i].pwLogClust,
                    analysis->glyphs[i].psva, analysis->glyphs[i].piAdvance,
                    &analysis->pItem[i].a, piCh, piTrailing);
        *piCh += analysis->pItem[i].iCharPos;

        return S_OK;
    }

    /* out of range */
    *piCh = analysis->pItem[analysis->numItems].iCharPos;
    *piTrailing = FALSE;

    return S_OK;
}


/***********************************************************************
 *      ScriptStringFree (USP10.@)
 *
 * Free a string analysis.
 *
 * PARAMS
 *  pssa [I] string analysis.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptStringFree(SCRIPT_STRING_ANALYSIS *pssa)
{
    StringAnalysis* analysis;
    BOOL invalid;
    int i;

    TRACE("(%p)\n", pssa);

    if (!pssa || !(analysis = *pssa)) return E_INVALIDARG;

    invalid = analysis->invalid;

    if (analysis->glyphs)
    {
        for (i = 0; i < analysis->numItems; i++)
        {
            heap_free(analysis->glyphs[i].glyphs);
            heap_free(analysis->glyphs[i].pwLogClust);
            heap_free(analysis->glyphs[i].piAdvance);
            heap_free(analysis->glyphs[i].psva);
            heap_free(analysis->glyphs[i].pGoffset);
            heap_free(analysis->glyphs[i].abc);
            if (analysis->glyphs[i].fallbackFont)
                DeleteObject(analysis->glyphs[i].fallbackFont);
            ScriptFreeCache((SCRIPT_CACHE *)&analysis->glyphs[i].sc);
            heap_free(analysis->glyphs[i].sc);
        }
        heap_free(analysis->glyphs);
    }

    heap_free(analysis->pItem);
    heap_free(analysis->logattrs);
    heap_free(analysis->sz);
    heap_free(analysis->logical2visual);
    heap_free(analysis);

    if (invalid) return E_INVALIDARG;
    return S_OK;
}

static inline int get_cluster_size(const WORD *pwLogClust, int cChars, int item,
                                   int direction, int* iCluster, int *check_out)
{
    int clust_size = 1;
    int check;
    WORD clust = pwLogClust[item];

    for (check = item+direction; check < cChars && check >= 0; check+=direction)
    {
        if (pwLogClust[check] == clust)
        {
            clust_size ++;
            if (iCluster && *iCluster == -1)
                *iCluster = item;
        }
        else break;
    }

    if (check_out)
        *check_out = check;

    return clust_size;
}

static inline int get_glyph_cluster_advance(const int* piAdvance, const SCRIPT_VISATTR *pva, const WORD *pwLogClust, int cGlyphs, int cChars, int glyph, int direction)
{
    int advance;
    int log_clust_max;

    advance = piAdvance[glyph];

    if (pwLogClust[0] > pwLogClust[cChars-1])
        log_clust_max = pwLogClust[0];
    else
        log_clust_max = pwLogClust[cChars-1];

    if (glyph > log_clust_max)
        return advance;

    for (glyph+=direction; glyph < cGlyphs && glyph >= 0; glyph +=direction)
    {

        if (does_glyph_start_cluster(pva, pwLogClust, cChars, glyph, direction))
            break;
        if (glyph > log_clust_max)
            break;
        advance += piAdvance[glyph];
    }

    return advance;
}

/***********************************************************************
 *      ScriptCPtoX (USP10.@)
 *
 */
HRESULT WINAPI ScriptCPtoX(int iCP,
                           BOOL fTrailing,
                           int cChars,
                           int cGlyphs,
                           const WORD *pwLogClust,
                           const SCRIPT_VISATTR *psva,
                           const int *piAdvance,
                           const SCRIPT_ANALYSIS *psa,
                           int *piX)
{
    int item;
    float iPosX;
    int iSpecial = -1;
    int iCluster = -1;
    int clust_size = 1;
    float special_size = 0.0;
    int iMaxPos = 0;
    int advance = 0;
    BOOL rtl = FALSE;

    TRACE("(%d,%d,%d,%d,%p,%p,%p,%p,%p)\n",
          iCP, fTrailing, cChars, cGlyphs, pwLogClust, psva, piAdvance,
          psa, piX);

    if (psa->fRTL && ! psa->fLogicalOrder)
        rtl = TRUE;

    if (fTrailing)
        iCP++;

    if (rtl)
    {
        int max_clust = pwLogClust[0];

        for (item=0; item < cGlyphs; item++)
            if (pwLogClust[item] > max_clust)
            {
                ERR("We do not handle non reversed clusters properly\n");
                break;
            }

        iMaxPos = 0;
        for (item = max_clust; item >=0; item --)
            iMaxPos += piAdvance[item];
    }

    iPosX = 0.0;
    for (item=0; item < iCP && item < cChars; item++)
    {
        if (iSpecial == -1 && (iCluster == -1 || (iCluster != -1 && iCluster+clust_size <= item)))
        {
            int check;
            int clust = pwLogClust[item];

            iCluster = -1;
            clust_size = get_cluster_size(pwLogClust, cChars, item, 1, &iCluster,
                                          &check);

            advance = get_glyph_cluster_advance(piAdvance, psva, pwLogClust, cGlyphs, cChars, clust, 1);

            if (check >= cChars && !iMaxPos)
            {
                int glyph;
                for (glyph = clust; glyph < cGlyphs; glyph++)
                    special_size += get_glyph_cluster_advance(piAdvance, psva, pwLogClust, cGlyphs, cChars, glyph, 1);
                iSpecial = item;
                special_size /= (cChars - item);
                iPosX += special_size;
            }
            else
            {
                if (scriptInformation[psa->eScript].props.fNeedsCaretInfo)
                {
                    clust_size --;
                    if (clust_size == 0)
                        iPosX += advance;
                }
                else
                    iPosX += advance / (float)clust_size;
            }
        }
        else if (iSpecial != -1)
            iPosX += special_size;
        else /* (iCluster != -1) */
        {
            int adv = get_glyph_cluster_advance(piAdvance, psva, pwLogClust, cGlyphs, cChars, pwLogClust[iCluster], 1);
            if (scriptInformation[psa->eScript].props.fNeedsCaretInfo)
            {
                clust_size --;
                if (clust_size == 0)
                    iPosX += adv;
            }
            else
                iPosX += adv / (float)clust_size;
        }
    }

    if (iMaxPos > 0)
    {
        iPosX = iMaxPos - iPosX;
        if (iPosX < 0)
            iPosX = 0;
    }

    *piX = iPosX;
    TRACE("*piX=%d\n", *piX);
    return S_OK;
}

/* Count the number of characters in a cluster and its starting index*/
static inline BOOL get_cluster_data(const WORD *pwLogClust, int cChars, int cluster_index, int *cluster_size, int *start_index)
{
    int size = 0;
    int i;

    for (i = 0; i < cChars; i++)
    {
        if (pwLogClust[i] == cluster_index)
        {
            if (!size && start_index)
            {
                *start_index = i;
                if (!cluster_size)
                    return TRUE;
            }
            size++;
        }
        else if (size) break;
    }
    if (cluster_size)
        *cluster_size = size;

    return (size > 0);
}

/*
    To handle multi-glyph clusters we need to find all the glyphs that are
    represented in the cluster. This involves finding the glyph whose
    index is the cluster index as well as whose glyph indices are greater than
    our cluster index but not part of a new cluster.

    Then we sum all those glyphs' advances.
*/
static inline int get_cluster_advance(const int* piAdvance,
                                      const SCRIPT_VISATTR *psva,
                                      const WORD *pwLogClust, int cGlyphs,
                                      int cChars, int cluster, int direction)
{
    int glyph_start;
    int glyph_end;
    int i, advance;

    if (direction > 0)
        i = 0;
    else
        i = (cChars - 1);

    for (glyph_start = -1, glyph_end = -1; i < cChars && i >= 0 && (glyph_start < 0 || glyph_end < 0); i+=direction)
    {
        if (glyph_start < 0 && pwLogClust[i] != cluster) continue;
        if (pwLogClust[i] == cluster && glyph_start < 0) glyph_start = pwLogClust[i];
        if (glyph_start >= 0 && glyph_end < 0 && pwLogClust[i] != cluster) glyph_end = pwLogClust[i];
    }
    if (glyph_end < 0)
    {
        if (direction > 0)
            glyph_end = cGlyphs;
        else
        {
            /* Don't fully understand multi-glyph reversed clusters yet,
             * do they occur for real or just in our test? */
            FIXME("multi-glyph reversed clusters found\n");
            glyph_end = glyph_start + 1;
        }
    }

    /* Check for fClusterStart, finding this generally would mean a malformed set of data */
    for (i = glyph_start+1; i< glyph_end; i++)
    {
        if (psva[i].fClusterStart)
        {
            glyph_end = i;
            break;
        }
    }

    for (advance = 0, i = glyph_start; i < glyph_end; i++)
        advance += piAdvance[i];

    return advance;
}


/***********************************************************************
 *      ScriptXtoCP (USP10.@)
 *
 * Basic algorithm :
 *  Use piAdvance to find the cluster we are looking at.
 *  Find the character that is the first character of the cluster.
 *  That is our base piCP.
 *  If the script snaps to cluster boundaries (Hebrew, Indic, Thai) then we
 *  are good. Otherwise if the cluster is larger than 1 glyph we need to
 *  determine how far through the cluster to advance the cursor.
 */
HRESULT WINAPI ScriptXtoCP(int iX,
                           int cChars,
                           int cGlyphs,
                           const WORD *pwLogClust,
                           const SCRIPT_VISATTR *psva,
                           const int *piAdvance,
                           const SCRIPT_ANALYSIS *psa,
                           int *piCP,
                           int *piTrailing)
{
    int direction = 1;
    int iPosX;
    int i;
    int glyph_index, cluster_index;
    int cluster_size;

    TRACE("(%d,%d,%d,%p,%p,%p,%p,%p,%p)\n",
          iX, cChars, cGlyphs, pwLogClust, psva, piAdvance,
          psa, piCP, piTrailing);

    if (psa->fRTL && ! psa->fLogicalOrder)
        direction = -1;

    /* Handle an iX < 0 */
    if (iX < 0)
    {
        if (direction < 0)
        {
            *piCP = cChars;
            *piTrailing = 0;
        }
        else
        {
            *piCP = -1;
            *piTrailing = 1;
        }
        return S_OK;
    }

    /* Looking for non-reversed clusters in a reversed string */
    if (direction < 0)
    {
        int max_clust = pwLogClust[0];
        for (i=0; i< cChars; i++)
            if (pwLogClust[i] > max_clust)
            {
                FIXME("We do not handle non reversed clusters properly\n");
                break;
            }
    }

    /* find the glyph_index based in iX */
    if (direction > 0)
    {
        for (glyph_index = -1, iPosX = iX; iPosX >=0 && glyph_index < cGlyphs; iPosX -= piAdvance[glyph_index+1], glyph_index++)
            ;
    }
    else
    {
        for (glyph_index = -1, iPosX = iX; iPosX > 0 && glyph_index < cGlyphs; iPosX -= piAdvance[glyph_index+1], glyph_index++)
            ;
    }

    TRACE("iPosX %i ->  glyph_index %i (%i)\n", iPosX, glyph_index, cGlyphs);

    *piTrailing = 0;
    if (glyph_index >= 0 && glyph_index < cGlyphs)
    {
        /* find the cluster */
        if (direction > 0 )
            for (i = 0, cluster_index = pwLogClust[0]; i < cChars && pwLogClust[i] <= glyph_index; cluster_index=pwLogClust[i++])
                ;
        else
            for (i = 0, cluster_index = pwLogClust[0]; i < cChars && pwLogClust[i] >= glyph_index; cluster_index=pwLogClust[i++])
                ;

        TRACE("cluster_index %i\n", cluster_index);

        if (direction < 0 && iPosX >= 0 && glyph_index != cluster_index)
        {
            /* We are off the end of the string */
            *piCP = -1;
            *piTrailing = 1;
            return S_OK;
        }

        get_cluster_data(pwLogClust, cChars, cluster_index, &cluster_size, &i);

        TRACE("first char index %i\n",i);
        if (scriptInformation[psa->eScript].props.fNeedsCaretInfo)
        {
            /* Check trailing */
            if (glyph_index != cluster_index ||
                (direction > 0 && abs(iPosX) <= (piAdvance[glyph_index] / 2)) ||
                (direction < 0 && abs(iPosX) >= (piAdvance[glyph_index] / 2)))
                *piTrailing = cluster_size;
        }
        else
        {
            if (cluster_size > 1)
            {
                /* Be part way through the glyph cluster based on size and position */
                int cluster_advance = get_cluster_advance(piAdvance, psva, pwLogClust, cGlyphs, cChars, cluster_index, direction);
                double cluster_part_width = cluster_advance / (float)cluster_size;
                double adv;
                int part_index;

                /* back up to the beginning of the cluster */
                for (adv = iPosX, part_index = cluster_index; part_index <= glyph_index; part_index++)
                    adv += piAdvance[part_index];
                if (adv > iX) adv = iX;

                TRACE("Multi-char cluster, no snap\n");
                TRACE("cluster size %i, pre-cluster iPosX %f\n",cluster_size, adv);
                TRACE("advance %i divides into %f per char\n", cluster_advance, cluster_part_width);
                if (direction > 0)
                {
                    for (part_index = 0; adv >= 0; adv-=cluster_part_width, part_index++)
                        ;
                    if (part_index) part_index--;
                }
                else
                {
                    for (part_index = 0; adv > 0; adv-=cluster_part_width, part_index++)
                        ;
                    if (part_index > cluster_size)
                    {
                        adv += cluster_part_width;
                        part_index=cluster_size;
                    }
                }

                TRACE("base_char %i part_index %i, leftover advance %f\n",i, part_index, adv);

                if (direction > 0)
                    i += part_index;
                else
                    i += (cluster_size - part_index);

                /* Check trailing */
                if ((direction > 0 && fabs(adv) <= (cluster_part_width / 2.0)) ||
                    (direction < 0 && adv && fabs(adv) >= (cluster_part_width / 2.0)))
                    *piTrailing = 1;
            }
            else
            {
                /* Check trailing */
                if ((direction > 0 && abs(iPosX) <= (piAdvance[glyph_index] / 2)) ||
                    (direction < 0 && abs(iPosX) >= (piAdvance[glyph_index] / 2)))
                    *piTrailing = 1;
            }
        }
    }
    else
    {
        TRACE("Point falls outside of string\n");
        if (glyph_index < 0)
            i = cChars-1;
        else /* (glyph_index >= cGlyphs) */
            i = cChars;

        /* If not snaping in the reverse direction (such as Hebrew) Then 0
           point flow to the next character */
        if (direction < 0)
        {
            if (!scriptInformation[psa->eScript].props.fNeedsCaretInfo && abs(iPosX) == piAdvance[glyph_index])
                i++;
            else
                *piTrailing = 1;
        }
    }

    *piCP = i;

    TRACE("*piCP=%d\n", *piCP);
    TRACE("*piTrailing=%d\n", *piTrailing);
    return S_OK;
}

/***********************************************************************
 *      ScriptBreak (USP10.@)
 *
 *  Retrieve line break information.
 *
 *  PARAMS
 *   chars [I] Array of characters.
 *   sa    [I] Script analysis.
 *   la    [I] Array of logical attribute structures.
 *
 *  RETURNS
 *   Success: S_OK
 *   Failure: S_FALSE
 */
HRESULT WINAPI ScriptBreak(const WCHAR *chars, int count, const SCRIPT_ANALYSIS *sa, SCRIPT_LOGATTR *la)
{
    TRACE("(%s, %d, %p, %p)\n", debugstr_wn(chars, count), count, sa, la);

    if (count < 0 || !la) return E_INVALIDARG;
    if (count == 0) return E_FAIL;

    BREAK_line(chars, count, sa, la);

    return S_OK;
}

/***********************************************************************
 *      ScriptIsComplex (USP10.@)
 *
 *  Determine if a string is complex.
 *
 *  PARAMS
 *   chars [I] Array of characters to test.
 *   len   [I] Length in characters.
 *   flag  [I] Flag.
 *
 *  RETURNS
 *   Success: S_OK
 *   Failure: S_FALSE
 *
 */
HRESULT WINAPI ScriptIsComplex(const WCHAR *chars, int len, DWORD flag)
{
    int i;
    INT consumed = 0;

    TRACE("(%s,%d,0x%x)\n", debugstr_wn(chars, len), len, flag);

    for (i = 0; i < len; i+=consumed)
    {
        int script;
        if (i >= len)
            break;

        if ((flag & SIC_ASCIIDIGIT) && chars[i] >= 0x30 && chars[i] <= 0x39)
            return S_OK;

        script = get_char_script(chars,i,len, &consumed);
        if ((scriptInformation[script].props.fComplex && (flag & SIC_COMPLEX))||
            (!scriptInformation[script].props.fComplex && (flag & SIC_NEUTRAL)))
            return S_OK;
    }
    return S_FALSE;
}

/***********************************************************************
 *      ScriptShapeOpenType (USP10.@)
 *
 * Produce glyphs and visual attributes for a run.
 *
 * PARAMS
 *  hdc         [I]   Device context.
 *  psc         [I/O] Opaque pointer to a script cache.
 *  psa         [I/O] Script analysis.
 *  tagScript   [I]   The OpenType tag for the Script
 *  tagLangSys  [I]   The OpenType tag for the Language
 *  rcRangeChars[I]   Array of Character counts in each range
 *  rpRangeProperties [I] Array of TEXTRANGE_PROPERTIES structures
 *  cRanges     [I]   Count of ranges
 *  pwcChars    [I]   Array of characters specifying the run.
 *  cChars      [I]   Number of characters in pwcChars.
 *  cMaxGlyphs  [I]   Length of pwOutGlyphs.
 *  pwLogClust  [O]   Array of logical cluster info.
 *  pCharProps  [O]   Array of character property values
 *  pwOutGlyphs [O]   Array of glyphs.
 *  pOutGlyphProps [O]  Array of attributes for the retrieved glyphs
 *  pcGlyphs    [O]   Number of glyphs returned.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptShapeOpenType( HDC hdc, SCRIPT_CACHE *psc,
                                    SCRIPT_ANALYSIS *psa, OPENTYPE_TAG tagScript,
                                    OPENTYPE_TAG tagLangSys, int *rcRangeChars,
                                    TEXTRANGE_PROPERTIES **rpRangeProperties,
                                    int cRanges, const WCHAR *pwcChars, int cChars,
                                    int cMaxGlyphs, WORD *pwLogClust,
                                    SCRIPT_CHARPROP *pCharProps, WORD *pwOutGlyphs,
                                    SCRIPT_GLYPHPROP *pOutGlyphProps, int *pcGlyphs)
{
    HRESULT hr;
    int i;
    unsigned int g;
    BOOL rtl;
    int cluster;
    static int once = 0;

    TRACE("(%p, %p, %p, %s, %s, %p, %p, %d, %s, %d, %d, %p, %p, %p, %p, %p )\n",
     hdc, psc, psa,
     debugstr_an((char*)&tagScript,4), debugstr_an((char*)&tagLangSys,4),
     rcRangeChars, rpRangeProperties, cRanges, debugstr_wn(pwcChars, cChars),
     cChars, cMaxGlyphs, pwLogClust, pCharProps, pwOutGlyphs, pOutGlyphProps, pcGlyphs);

    if (psa) TRACE("psa values: %d, %d, %d, %d, %d, %d, %d\n", psa->eScript, psa->fRTL, psa->fLayoutRTL,
                   psa->fLinkBefore, psa->fLinkAfter, psa->fLogicalOrder, psa->fNoGlyphIndex);

    if (!pOutGlyphProps || !pcGlyphs || !pCharProps) return E_INVALIDARG;
    if (cChars > cMaxGlyphs) return E_OUTOFMEMORY;

    if (cRanges)
        if(!once++) FIXME("Ranges not supported yet\n");

    rtl = (psa && !psa->fLogicalOrder && psa->fRTL);

    *pcGlyphs = cChars;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;
    if (!pwLogClust) return E_FAIL;

    ((ScriptCache *)*psc)->userScript = tagScript;
    ((ScriptCache *)*psc)->userLang = tagLangSys;

    /* Initialize a SCRIPT_VISATTR and LogClust for each char in this run */
    for (i = 0; i < cChars; i++)
    {
        int idx = i;
        if (rtl) idx = cChars - 1 - i;
        /* FIXME: set to better values */
        pOutGlyphProps[i].sva.uJustification = (pwcChars[idx] == ' ') ? SCRIPT_JUSTIFY_BLANK : SCRIPT_JUSTIFY_CHARACTER;
        pOutGlyphProps[i].sva.fClusterStart  = 1;
        pOutGlyphProps[i].sva.fDiacritic     = 0;
        pOutGlyphProps[i].sva.fZeroWidth     = 0;
        pOutGlyphProps[i].sva.fReserved      = 0;
        pOutGlyphProps[i].sva.fShapeReserved = 0;

        /* FIXME: have the shaping engine set this */
        pCharProps[i].fCanGlyphAlone = 0;

        pwLogClust[i] = idx;
    }

    if (psa && !psa->fNoGlyphIndex && ((ScriptCache *)*psc)->sfnt)
    {
        WCHAR *rChars;
        if ((hr = SHAPE_CheckFontForRequiredFeatures(hdc, (ScriptCache *)*psc, psa)) != S_OK) return hr;

        rChars = heap_alloc(sizeof(WCHAR) * cChars);
        if (!rChars) return E_OUTOFMEMORY;
        for (i = 0, g = 0, cluster = 0; i < cChars; i++)
        {
            int idx = i;
            DWORD chInput;

            if (rtl) idx = cChars - 1 - i;
            if (!cluster)
            {
                chInput = decode_surrogate_pair(pwcChars, idx, cChars);
                if (!chInput)
                {
                    if (psa->fRTL)
                        chInput = mirror_char(pwcChars[idx]);
                    else
                        chInput = pwcChars[idx];
                    rChars[i] = chInput;
                }
                else
                {
                    rChars[i] = pwcChars[idx];
                    rChars[i+1] = pwcChars[(rtl)?idx-1:idx+1];
                    cluster = 1;
                }
                if (!(pwOutGlyphs[g] = get_cache_glyph(psc, chInput)))
                {
                    WORD glyph;
                    if (!hdc)
                    {
                        heap_free(rChars);
                        return E_PENDING;
                    }
                    if (OpenType_CMAP_GetGlyphIndex(hdc, (ScriptCache *)*psc, chInput, &glyph, 0) == GDI_ERROR)
                    {
                        heap_free(rChars);
                        return S_FALSE;
                    }
                    pwOutGlyphs[g] = set_cache_glyph(psc, chInput, glyph);
                }
                g++;
            }
            else
            {
                int k;
                cluster--;
                pwLogClust[idx] = (rtl)?pwLogClust[idx+1]:pwLogClust[idx-1];
                for (k = (rtl)?idx-1:idx+1; k >= 0 && k < cChars; (rtl)?k--:k++)
                    pwLogClust[k]--;
            }
        }
        *pcGlyphs = g;

        SHAPE_ContextualShaping(hdc, (ScriptCache *)*psc, psa, rChars, cChars, pwOutGlyphs, pcGlyphs, cMaxGlyphs, pwLogClust);
        SHAPE_ApplyDefaultOpentypeFeatures(hdc, (ScriptCache *)*psc, psa, pwOutGlyphs, pcGlyphs, cMaxGlyphs, cChars, pwLogClust);
        SHAPE_CharGlyphProp(hdc, (ScriptCache *)*psc, psa, pwcChars, cChars, pwOutGlyphs, *pcGlyphs, pwLogClust, pCharProps, pOutGlyphProps);

        for (i = 0; i < cChars; ++i)
        {
            /* Special case for tabs and joiners. As control characters, ZWNJ
             * and ZWJ would in principle get handled by the corresponding
             * shaping functions. However, since ZWNJ and ZWJ can get merged
             * into adjoining runs during itemisation, these don't generally
             * get classified as Script_Control. */
            if (pwcChars[i] == 0x0009 || pwcChars[i] == ZWSP || pwcChars[i] == ZWNJ || pwcChars[i] == ZWJ)
            {
                pwOutGlyphs[pwLogClust[i]] = ((ScriptCache *)*psc)->sfp.wgBlank;
                pOutGlyphProps[pwLogClust[i]].sva.fZeroWidth = 1;
            }
        }
        heap_free(rChars);
    }
    else
    {
        TRACE("no glyph translation\n");
        for (i = 0; i < cChars; i++)
        {
            int idx = i;
            /* No mirroring done here */
            if (rtl) idx = cChars - 1 - i;
            pwOutGlyphs[i] = pwcChars[idx];

            if (!psa)
                continue;

            /* overwrite some basic control glyphs to blank */
            if (psa->fNoGlyphIndex)
            {
                if (pwcChars[idx] == ZWSP || pwcChars[idx] == ZWNJ || pwcChars[idx] == ZWJ)
                {
                    pwOutGlyphs[i] = 0x20;
                    pOutGlyphProps[i].sva.fZeroWidth = 1;
                }
            }
            else if (psa->eScript == Script_Control || pwcChars[idx] == ZWSP
                    || pwcChars[idx] == ZWNJ || pwcChars[idx] == ZWJ)
            {
                if (pwcChars[idx] == 0x0009 || pwcChars[idx] == 0x000A ||
                    pwcChars[idx] == 0x000D || pwcChars[idx] >= 0x001C)
                {
                    pwOutGlyphs[i] = ((ScriptCache *)*psc)->sfp.wgBlank;
                    pOutGlyphProps[i].sva.fZeroWidth = 1;
                }
            }
        }
    }

    return S_OK;
}


/***********************************************************************
 *      ScriptShape (USP10.@)
 *
 * Produce glyphs and visual attributes for a run.
 *
 * PARAMS
 *  hdc         [I]   Device context.
 *  psc         [I/O] Opaque pointer to a script cache.
 *  pwcChars    [I]   Array of characters specifying the run.
 *  cChars      [I]   Number of characters in pwcChars.
 *  cMaxGlyphs  [I]   Length of pwOutGlyphs.
 *  psa         [I/O] Script analysis.
 *  pwOutGlyphs [O]   Array of glyphs.
 *  pwLogClust  [O]   Array of logical cluster info.
 *  psva        [O]   Array of visual attributes.
 *  pcGlyphs    [O]   Number of glyphs returned.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptShape(HDC hdc, SCRIPT_CACHE *psc, const WCHAR *pwcChars,
                           int cChars, int cMaxGlyphs,
                           SCRIPT_ANALYSIS *psa, WORD *pwOutGlyphs, WORD *pwLogClust,
                           SCRIPT_VISATTR *psva, int *pcGlyphs)
{
    HRESULT hr;
    int i;
    SCRIPT_CHARPROP *charProps;
    SCRIPT_GLYPHPROP *glyphProps;

    if (!psva || !pcGlyphs) return E_INVALIDARG;
    if (cChars > cMaxGlyphs) return E_OUTOFMEMORY;

    charProps = heap_alloc_zero(sizeof(SCRIPT_CHARPROP)*cChars);
    if (!charProps) return E_OUTOFMEMORY;
    glyphProps = heap_alloc_zero(sizeof(SCRIPT_GLYPHPROP)*cMaxGlyphs);
    if (!glyphProps)
    {
        heap_free(charProps);
        return E_OUTOFMEMORY;
    }

    hr = ScriptShapeOpenType(hdc, psc, psa, scriptInformation[psa->eScript].scriptTag, 0, NULL, NULL, 0, pwcChars, cChars, cMaxGlyphs, pwLogClust, charProps, pwOutGlyphs, glyphProps, pcGlyphs);

    if (SUCCEEDED(hr))
    {
        for (i = 0; i < *pcGlyphs; i++)
            psva[i] = glyphProps[i].sva;
    }

    heap_free(charProps);
    heap_free(glyphProps);

    return hr;
}

/***********************************************************************
 *      ScriptPlaceOpenType (USP10.@)
 *
 * Produce advance widths for a run.
 *
 * PARAMS
 *  hdc       [I]   Device context.
 *  psc       [I/O] Opaque pointer to a script cache.
 *  psa       [I/O] Script analysis.
 *  tagScript   [I]   The OpenType tag for the Script
 *  tagLangSys  [I]   The OpenType tag for the Language
 *  rcRangeChars[I]   Array of Character counts in each range
 *  rpRangeProperties [I] Array of TEXTRANGE_PROPERTIES structures
 *  cRanges     [I]   Count of ranges
 *  pwcChars    [I]   Array of characters specifying the run.
 *  pwLogClust  [I]   Array of logical cluster info
 *  pCharProps  [I]   Array of character property values
 *  cChars      [I]   Number of characters in pwcChars.
 *  pwGlyphs  [I]   Array of glyphs.
 *  pGlyphProps [I]  Array of attributes for the retrieved glyphs
 *  cGlyphs [I] Count of Glyphs
 *  piAdvance [O]   Array of advance widths.
 *  pGoffset  [O]   Glyph offsets.
 *  pABC      [O]   Combined ABC width.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */

HRESULT WINAPI ScriptPlaceOpenType( HDC hdc, SCRIPT_CACHE *psc, SCRIPT_ANALYSIS *psa,
                                    OPENTYPE_TAG tagScript, OPENTYPE_TAG tagLangSys,
                                    int *rcRangeChars, TEXTRANGE_PROPERTIES **rpRangeProperties,
                                    int cRanges, const WCHAR *pwcChars, WORD *pwLogClust,
                                    SCRIPT_CHARPROP *pCharProps, int cChars,
                                    const WORD *pwGlyphs, const SCRIPT_GLYPHPROP *pGlyphProps,
                                    int cGlyphs, int *piAdvance,
                                    GOFFSET *pGoffset, ABC *pABC
)
{
    HRESULT hr;
    int i;
    static int once = 0;

    TRACE("(%p, %p, %p, %s, %s, %p, %p, %d, %s, %p, %p, %d, %p, %p, %d, %p %p %p)\n",
     hdc, psc, psa,
     debugstr_an((char*)&tagScript,4), debugstr_an((char*)&tagLangSys,4),
     rcRangeChars, rpRangeProperties, cRanges, debugstr_wn(pwcChars, cChars),
     pwLogClust, pCharProps, cChars, pwGlyphs, pGlyphProps, cGlyphs, piAdvance,
     pGoffset, pABC);

    if (!pGlyphProps) return E_INVALIDARG;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;
    if (!pGoffset) return E_FAIL;

    if (cRanges)
        if (!once++) FIXME("Ranges not supported yet\n");

    ((ScriptCache *)*psc)->userScript = tagScript;
    ((ScriptCache *)*psc)->userLang = tagLangSys;

    if (pABC) memset(pABC, 0, sizeof(ABC));
    for (i = 0; i < cGlyphs; i++)
    {
        ABC abc;
        if (pGlyphProps[i].sva.fZeroWidth)
        {
            abc.abcA = abc.abcB = abc.abcC = 0;
        }
        else if (!get_cache_glyph_widths(psc, pwGlyphs[i], &abc))
        {
            if (!hdc) return E_PENDING;
            if ((get_cache_pitch_family(psc) & TMPF_TRUETYPE) && !psa->fNoGlyphIndex)
            {
                if (!GetCharABCWidthsI(hdc, 0, 1, (WORD *)&pwGlyphs[i], &abc)) return S_FALSE;
            }
            else
            {
                INT width;
                if (!GetCharWidth32W(hdc, pwGlyphs[i], pwGlyphs[i], &width)) return S_FALSE;
                abc.abcB = width;
                abc.abcA = abc.abcC = 0;
            }
            set_cache_glyph_widths(psc, pwGlyphs[i], &abc);
        }
        if (pABC)
        {
            pABC->abcA += abc.abcA;
            pABC->abcB += abc.abcB;
            pABC->abcC += abc.abcC;
        }
        /* FIXME: set to more reasonable values */
        pGoffset[i].du = pGoffset[i].dv = 0;
        if (piAdvance) piAdvance[i] = abc.abcA + abc.abcB + abc.abcC;
    }

    SHAPE_ApplyOpenTypePositions(hdc, (ScriptCache *)*psc, psa, pwGlyphs, cGlyphs, piAdvance, pGoffset);

    if (pABC) TRACE("Total for run: abcA=%d, abcB=%d, abcC=%d\n", pABC->abcA, pABC->abcB, pABC->abcC);
    return S_OK;
}

/***********************************************************************
 *      ScriptPlace (USP10.@)
 *
 * Produce advance widths for a run.
 *
 * PARAMS
 *  hdc       [I]   Device context.
 *  psc       [I/O] Opaque pointer to a script cache.
 *  pwGlyphs  [I]   Array of glyphs.
 *  cGlyphs   [I]   Number of glyphs in pwGlyphs.
 *  psva      [I]   Array of visual attributes.
 *  psa       [I/O] String analysis.
 *  piAdvance [O]   Array of advance widths.
 *  pGoffset  [O]   Glyph offsets.
 *  pABC      [O]   Combined ABC width.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptPlace(HDC hdc, SCRIPT_CACHE *psc, const WORD *pwGlyphs,
                           int cGlyphs, const SCRIPT_VISATTR *psva,
                           SCRIPT_ANALYSIS *psa, int *piAdvance, GOFFSET *pGoffset, ABC *pABC )
{
    HRESULT hr;
    SCRIPT_GLYPHPROP *glyphProps;
    int i;

    TRACE("(%p, %p, %p, %d, %p, %p, %p, %p, %p)\n",  hdc, psc, pwGlyphs, cGlyphs, psva, psa,
          piAdvance, pGoffset, pABC);

    if (!psva) return E_INVALIDARG;
    if (!pGoffset) return E_FAIL;

    glyphProps = heap_alloc(sizeof(SCRIPT_GLYPHPROP)*cGlyphs);
    if (!glyphProps) return E_OUTOFMEMORY;

    for (i = 0; i < cGlyphs; i++)
        glyphProps[i].sva = psva[i];

    hr = ScriptPlaceOpenType(hdc, psc, psa, scriptInformation[psa->eScript].scriptTag, 0, NULL, NULL, 0, NULL, NULL, NULL, 0, pwGlyphs, glyphProps, cGlyphs, piAdvance, pGoffset, pABC);

    heap_free(glyphProps);

    return hr;
}

/***********************************************************************
 *      ScriptGetCMap (USP10.@)
 *
 * Retrieve glyph indices.
 *
 * PARAMS
 *  hdc         [I]   Device context.
 *  psc         [I/O] Opaque pointer to a script cache.
 *  pwcInChars  [I]   Array of Unicode characters.
 *  cChars      [I]   Number of characters in pwcInChars.
 *  dwFlags     [I]   Flags.
 *  pwOutGlyphs [O]   Buffer to receive the array of glyph indices.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptGetCMap(HDC hdc, SCRIPT_CACHE *psc, const WCHAR *pwcInChars,
                             int cChars, DWORD dwFlags, WORD *pwOutGlyphs)
{
    HRESULT hr;
    int i;

    TRACE("(%p,%p,%s,%d,0x%x,%p)\n", hdc, psc, debugstr_wn(pwcInChars, cChars),
          cChars, dwFlags, pwOutGlyphs);

    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;

    hr = S_OK;

    if ((get_cache_pitch_family(psc) & TMPF_TRUETYPE))
    {
        for (i = 0; i < cChars; i++)
        {
            WCHAR inChar;
            if (dwFlags == SGCM_RTL)
                inChar = mirror_char(pwcInChars[i]);
            else
                inChar = pwcInChars[i];
            if (!(pwOutGlyphs[i] = get_cache_glyph(psc, inChar)))
            {
                WORD glyph;
                if (!hdc) return E_PENDING;
                if (GetGlyphIndicesW(hdc, &inChar, 1, &glyph, GGI_MARK_NONEXISTING_GLYPHS) == GDI_ERROR) return S_FALSE;
                if (glyph == 0xffff)
                {
                    hr = S_FALSE;
                    glyph = 0x0;
                }
                pwOutGlyphs[i] = set_cache_glyph(psc, inChar, glyph);
            }
        }
    }
    else
    {
        TRACE("no glyph translation\n");
        for (i = 0; i < cChars; i++)
        {
            WCHAR inChar;
            if (dwFlags == SGCM_RTL)
                inChar = mirror_char(pwcInChars[i]);
            else
                inChar = pwcInChars[i];
            pwOutGlyphs[i] = inChar;
        }
    }
    return hr;
}

/***********************************************************************
 *      ScriptTextOut (USP10.@)
 *
 */
HRESULT WINAPI ScriptTextOut(const HDC hdc, SCRIPT_CACHE *psc, int x, int y, UINT fuOptions, 
                             const RECT *lprc, const SCRIPT_ANALYSIS *psa, const WCHAR *pwcReserved, 
                             int iReserved, const WORD *pwGlyphs, int cGlyphs, const int *piAdvance,
                             const int *piJustify, const GOFFSET *pGoffset)
{
    HRESULT hr = S_OK;
    INT i, dir = 1;
    INT *lpDx;
    WORD *reordered_glyphs = (WORD *)pwGlyphs;

    TRACE("(%p, %p, %d, %d, %08x, %s, %p, %p, %d, %p, %d, %p, %p, %p)\n",
         hdc, psc, x, y, fuOptions, wine_dbgstr_rect(lprc), psa, pwcReserved, iReserved, pwGlyphs, cGlyphs,
         piAdvance, piJustify, pGoffset);

    if (!hdc || !psc) return E_INVALIDARG;
    if (!piAdvance || !psa || !pwGlyphs) return E_INVALIDARG;

    fuOptions &= ETO_CLIPPED + ETO_OPAQUE;
    fuOptions |= ETO_IGNORELANGUAGE;
    if  (!psa->fNoGlyphIndex)                                     /* Have Glyphs?                      */
        fuOptions |= ETO_GLYPH_INDEX;                             /* Say don't do translation to glyph */

    lpDx = heap_alloc(cGlyphs * sizeof(INT) * 2);
    if (!lpDx) return E_OUTOFMEMORY;
    fuOptions |= ETO_PDY;

    if (psa->fRTL && psa->fLogicalOrder)
    {
        reordered_glyphs = heap_alloc( cGlyphs * sizeof(WORD) );
        if (!reordered_glyphs)
        {
            heap_free( lpDx );
            return E_OUTOFMEMORY;
        }

        for (i = 0; i < cGlyphs; i++)
            reordered_glyphs[i] = pwGlyphs[cGlyphs - 1 - i];
        dir = -1;
    }

    for (i = 0; i < cGlyphs; i++)
    {
        int orig_index = (dir > 0) ? i : cGlyphs - 1 - i;
        lpDx[i * 2] = piAdvance[orig_index];
        lpDx[i * 2 + 1] = 0;

        if (pGoffset)
        {
            if (i == 0)
            {
                x += pGoffset[orig_index].du * dir;
                y += pGoffset[orig_index].dv;
            }
            else
            {
                lpDx[(i - 1) * 2]     += pGoffset[orig_index].du * dir;
                lpDx[(i - 1) * 2 + 1] += pGoffset[orig_index].dv;
            }
            lpDx[i * 2]     -= pGoffset[orig_index].du * dir;
            lpDx[i * 2 + 1] -= pGoffset[orig_index].dv;
        }
    }

    if (!ExtTextOutW(hdc, x, y, fuOptions, lprc, reordered_glyphs, cGlyphs, lpDx))
        hr = S_FALSE;

    if (reordered_glyphs != pwGlyphs) heap_free( reordered_glyphs );
    heap_free(lpDx);

    return hr;
}

/***********************************************************************
 *      ScriptCacheGetHeight (USP10.@)
 *
 * Retrieve the height of the font in the cache.
 *
 * PARAMS
 *  hdc    [I]    Device context.
 *  psc    [I/O]  Opaque pointer to a script cache.
 *  height [O]    Receives font height.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptCacheGetHeight(HDC hdc, SCRIPT_CACHE *psc, LONG *height)
{
    HRESULT hr;

    TRACE("(%p, %p, %p)\n", hdc, psc, height);

    if (!height) return E_INVALIDARG;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;

    *height = get_cache_height(psc);
    return S_OK;
}

/***********************************************************************
 *      ScriptGetGlyphABCWidth (USP10.@)
 *
 * Retrieve the width of a glyph.
 *
 * PARAMS
 *  hdc    [I]    Device context.
 *  psc    [I/O]  Opaque pointer to a script cache.
 *  glyph  [I]    Glyph to retrieve the width for.
 *  abc    [O]    ABC widths of the glyph.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 */
HRESULT WINAPI ScriptGetGlyphABCWidth(HDC hdc, SCRIPT_CACHE *psc, WORD glyph, ABC *abc)
{
    HRESULT hr;

    TRACE("(%p, %p, 0x%04x, %p)\n", hdc, psc, glyph, abc);

    if (!abc) return E_INVALIDARG;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;

    if (!get_cache_glyph_widths(psc, glyph, abc))
    {
        if (!hdc) return E_PENDING;
        if ((get_cache_pitch_family(psc) & TMPF_TRUETYPE))
        {
            if (!GetCharABCWidthsI(hdc, 0, 1, &glyph, abc)) return S_FALSE;
        }
        else
        {
            INT width;
            if (!GetCharWidth32W(hdc, glyph, glyph, &width)) return S_FALSE;
            abc->abcB = width;
            abc->abcA = abc->abcC = 0;
        }
        set_cache_glyph_widths(psc, glyph, abc);
    }
    return S_OK;
}

/***********************************************************************
 *      ScriptLayout (USP10.@)
 *
 * Map embedding levels to visual and/or logical order.
 *
 * PARAMS
 *  runs     [I] Size of level array.
 *  level    [I] Array of embedding levels.
 *  vistolog [O] Map of embedding levels from visual to logical order.
 *  logtovis [O] Map of embedding levels from logical to visual order.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: Non-zero HRESULT value.
 *
 */
HRESULT WINAPI ScriptLayout(int runs, const BYTE *level, int *vistolog, int *logtovis)
{
    int* indexs;
    int ich;

    TRACE("(%d, %p, %p, %p)\n", runs, level, vistolog, logtovis);

    if (!level || (!vistolog && !logtovis))
        return E_INVALIDARG;

    indexs = heap_alloc(sizeof(int) * runs);
    if (!indexs)
        return E_OUTOFMEMORY;

    if (vistolog)
    {
        for( ich = 0; ich < runs; ich++)
            indexs[ich] = ich;

        ich = 0;
        while (ich < runs)
            ich += BIDI_ReorderV2lLevel(0, indexs+ich, level+ich, runs - ich, FALSE);
        memcpy(vistolog, indexs, runs * sizeof(*vistolog));
    }

    if (logtovis)
    {
        for( ich = 0; ich < runs; ich++)
            indexs[ich] = ich;

        ich = 0;
        while (ich < runs)
            ich += BIDI_ReorderL2vLevel(0, indexs+ich, level+ich, runs - ich, FALSE);
        memcpy(logtovis, indexs, runs * sizeof(*logtovis));
    }
    heap_free(indexs);

    return S_OK;
}

/***********************************************************************
 *      ScriptStringGetLogicalWidths (USP10.@)
 *
 * Returns logical widths from a string analysis.
 *
 * PARAMS
 *  ssa  [I] string analysis.
 *  piDx [O] logical widths returned.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: a non-zero HRESULT.
 */
HRESULT WINAPI ScriptStringGetLogicalWidths(SCRIPT_STRING_ANALYSIS ssa, int *piDx)
{
    int i, j, next = 0;
    StringAnalysis *analysis = ssa;

    TRACE("%p, %p\n", ssa, piDx);

    if (!analysis) return S_FALSE;
    if (!(analysis->dwFlags & SSA_GLYPHS)) return S_FALSE;

    for (i = 0; i < analysis->numItems; i++)
    {
        int cChar = analysis->pItem[i+1].iCharPos - analysis->pItem[i].iCharPos;
        int direction = 1;

        if (analysis->pItem[i].a.fRTL && ! analysis->pItem[i].a.fLogicalOrder)
            direction = -1;

        for (j = 0; j < cChar; j++)
        {
            int k;
            int glyph = analysis->glyphs[i].pwLogClust[j];
            int clust_size = get_cluster_size(analysis->glyphs[i].pwLogClust,
                                              cChar, j, direction, NULL, NULL);
            int advance = get_glyph_cluster_advance(analysis->glyphs[i].piAdvance, analysis->glyphs[i].psva, analysis->glyphs[i].pwLogClust, analysis->glyphs[i].numGlyphs, cChar, glyph, direction);

            for (k = 0; k < clust_size; k++)
            {
                piDx[next] = advance / clust_size;
                next++;
                if (k) j++;
            }
        }
    }
    return S_OK;
}

/***********************************************************************
 *      ScriptStringValidate (USP10.@)
 *
 * Validate a string analysis.
 *
 * PARAMS
 *  ssa [I] string analysis.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: S_FALSE if invalid sequences are found
 *           or a non-zero HRESULT if it fails.
 */
HRESULT WINAPI ScriptStringValidate(SCRIPT_STRING_ANALYSIS ssa)
{
    StringAnalysis *analysis = ssa;

    TRACE("(%p)\n", ssa);

    if (!analysis) return E_INVALIDARG;
    return (analysis->invalid) ? S_FALSE : S_OK;
}

/***********************************************************************
 *      ScriptString_pSize (USP10.@)
 *
 * Retrieve width and height of an analysed string.
 *
 * PARAMS
 *  ssa [I] string analysis.
 *
 * RETURNS
 *  Success: Pointer to a SIZE structure.
 *  Failure: NULL
 */
const SIZE * WINAPI ScriptString_pSize(SCRIPT_STRING_ANALYSIS ssa)
{
    int i, j;
    StringAnalysis *analysis = ssa;

    TRACE("(%p)\n", ssa);

    if (!analysis) return NULL;
    if (!(analysis->dwFlags & SSA_GLYPHS)) return NULL;

    if (!analysis->sz)
    {
        if (!(analysis->sz = heap_alloc(sizeof(SIZE)))) return NULL;
        analysis->sz->cy = analysis->glyphs[0].sc->tm.tmHeight;

        analysis->sz->cx = 0;
        for (i = 0; i < analysis->numItems; i++)
        {
            if (analysis->glyphs[i].sc->tm.tmHeight > analysis->sz->cy)
                analysis->sz->cy = analysis->glyphs[i].sc->tm.tmHeight;
            for (j = 0; j < analysis->glyphs[i].numGlyphs; j++)
                analysis->sz->cx += analysis->glyphs[i].piAdvance[j];
        }
    }
    return analysis->sz;
}

/***********************************************************************
 *      ScriptString_pLogAttr (USP10.@)
 *
 * Retrieve logical attributes of an analysed string.
 *
 * PARAMS
 *  ssa [I] string analysis.
 *
 * RETURNS
 *  Success: Pointer to an array of SCRIPT_LOGATTR structures.
 *  Failure: NULL
 */
const SCRIPT_LOGATTR * WINAPI ScriptString_pLogAttr(SCRIPT_STRING_ANALYSIS ssa)
{
    StringAnalysis *analysis = ssa;

    TRACE("(%p)\n", ssa);

    if (!analysis) return NULL;
    if (!(analysis->dwFlags & SSA_BREAK)) return NULL;
    return analysis->logattrs;
}

/***********************************************************************
 *      ScriptString_pcOutChars (USP10.@)
 *
 * Retrieve the length of a string after clipping.
 *
 * PARAMS
 *  ssa [I] String analysis.
 *
 * RETURNS
 *  Success: Pointer to the length.
 *  Failure: NULL
 */
const int * WINAPI ScriptString_pcOutChars(SCRIPT_STRING_ANALYSIS ssa)
{
    StringAnalysis *analysis = ssa;

    TRACE("(%p)\n", ssa);

    if (!analysis) return NULL;
    return &analysis->clip_len;
}

/***********************************************************************
 *      ScriptStringGetOrder (USP10.@)
 *
 * Retrieve a glyph order map.
 *
 * PARAMS
 *  ssa   [I]   String analysis.
 *  order [I/O] Array of glyph positions.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: a non-zero HRESULT.
 */
HRESULT WINAPI ScriptStringGetOrder(SCRIPT_STRING_ANALYSIS ssa, UINT *order)
{
    int i, j;
    unsigned int k;
    StringAnalysis *analysis = ssa;

    TRACE("(%p)\n", ssa);

    if (!analysis) return S_FALSE;
    if (!(analysis->dwFlags & SSA_GLYPHS)) return S_FALSE;

    /* FIXME: handle RTL scripts */
    for (i = 0, k = 0; i < analysis->numItems; i++)
        for (j = 0; j < analysis->glyphs[i].numGlyphs; j++, k++)
            order[k] = k;

    return S_OK;
}

/***********************************************************************
 *      ScriptGetLogicalWidths (USP10.@)
 *
 * Convert advance widths to logical widths.
 *
 * PARAMS
 *  sa          [I] Script analysis.
 *  nbchars     [I] Number of characters.
 *  nbglyphs    [I] Number of glyphs.
 *  glyph_width [I] Array of glyph widths.
 *  log_clust   [I] Array of logical clusters.
 *  sva         [I] Visual attributes.
 *  widths      [O] Array of logical widths.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: a non-zero HRESULT.
 */
HRESULT WINAPI ScriptGetLogicalWidths(const SCRIPT_ANALYSIS *sa, int nbchars, int nbglyphs,
                                      const int *advances, const WORD *log_clust,
                                      const SCRIPT_VISATTR *sva, int *widths)
{
    int i, next = 0, direction;

    TRACE("(%p, %d, %d, %p, %p, %p, %p)\n",
          sa, nbchars, nbglyphs, advances, log_clust, sva, widths);

    if (sa->fRTL && !sa->fLogicalOrder)
        direction = -1;
    else
        direction = 1;

    for (i = 0; i < nbchars; i++)
    {
        int clust_size = get_cluster_size(log_clust, nbchars, i, direction, NULL, NULL);
        int advance = get_glyph_cluster_advance(advances, sva, log_clust, nbglyphs, nbchars, log_clust[i], direction);
        int j;

        for (j = 0; j < clust_size; j++)
        {
            widths[next] = advance / clust_size;
            next++;
            if (j) i++;
        }
    }

    return S_OK;
}

/***********************************************************************
 *      ScriptApplyLogicalWidth (USP10.@)
 *
 * Generate glyph advance widths.
 *
 * PARAMS
 *  dx          [I]   Array of logical advance widths.
 *  num_chars   [I]   Number of characters.
 *  num_glyphs  [I]   Number of glyphs.
 *  log_clust   [I]   Array of logical clusters.
 *  sva         [I]   Visual attributes.
 *  advance     [I]   Array of glyph advance widths.
 *  sa          [I]   Script analysis.
 *  abc         [I/O] Summed ABC widths.
 *  justify     [O]   Array of glyph advance widths.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: a non-zero HRESULT.
 */
HRESULT WINAPI ScriptApplyLogicalWidth(const int *dx, int num_chars, int num_glyphs,
                                       const WORD *log_clust, const SCRIPT_VISATTR *sva,
                                       const int *advance, const SCRIPT_ANALYSIS *sa,
                                       ABC *abc, int *justify)
{
    int i;

    FIXME("(%p, %d, %d, %p, %p, %p, %p, %p, %p)\n",
          dx, num_chars, num_glyphs, log_clust, sva, advance, sa, abc, justify);

    for (i = 0; i < num_chars; i++) justify[i] = advance[i];
    return S_OK;
}

HRESULT WINAPI ScriptJustify(const SCRIPT_VISATTR *sva, const int *advance,
                             int num_glyphs, int dx, int min_kashida, int *justify)
{
    int i;

    FIXME("(%p, %p, %d, %d, %d, %p)\n", sva, advance, num_glyphs, dx, min_kashida, justify);

    for (i = 0; i < num_glyphs; i++) justify[i] = advance[i];
    return S_OK;
}

HRESULT WINAPI ScriptGetFontScriptTags( HDC hdc, SCRIPT_CACHE *psc, SCRIPT_ANALYSIS *psa, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags)
{
    HRESULT hr;
    if (!pScriptTags || !pcTags || cMaxTags == 0) return E_INVALIDARG;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;

    return SHAPE_GetFontScriptTags(hdc, (ScriptCache *)*psc, psa, cMaxTags, pScriptTags, pcTags);
}

HRESULT WINAPI ScriptGetFontLanguageTags( HDC hdc, SCRIPT_CACHE *psc, SCRIPT_ANALYSIS *psa, OPENTYPE_TAG tagScript, int cMaxTags, OPENTYPE_TAG *pLangSysTags, int *pcTags)
{
    HRESULT hr;
    if (!pLangSysTags || !pcTags || cMaxTags == 0) return E_INVALIDARG;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;

    return SHAPE_GetFontLanguageTags(hdc, (ScriptCache *)*psc, psa, tagScript, cMaxTags, pLangSysTags, pcTags);
}

HRESULT WINAPI ScriptGetFontFeatureTags( HDC hdc, SCRIPT_CACHE *psc, SCRIPT_ANALYSIS *psa, OPENTYPE_TAG tagScript, OPENTYPE_TAG tagLangSys, int cMaxTags, OPENTYPE_TAG *pFeatureTags, int *pcTags)
{
    HRESULT hr;
    if (!pFeatureTags || !pcTags || cMaxTags == 0) return E_INVALIDARG;
    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;

    return SHAPE_GetFontFeatureTags(hdc, (ScriptCache *)*psc, psa, tagScript, tagLangSys, cMaxTags, pFeatureTags, pcTags);
}