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Diffstat (limited to 'Build/source/libs/icu/icu-src/source/layout/KhmerReordering.h')
-rw-r--r-- | Build/source/libs/icu/icu-src/source/layout/KhmerReordering.h | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/Build/source/libs/icu/icu-src/source/layout/KhmerReordering.h b/Build/source/libs/icu/icu-src/source/layout/KhmerReordering.h deleted file mode 100644 index eecd12dff63..00000000000 --- a/Build/source/libs/icu/icu-src/source/layout/KhmerReordering.h +++ /dev/null @@ -1,132 +0,0 @@ -/* - * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved - * - * This file is a modification of the ICU file IndicReordering.h - * by Jens Herden and Javier Sola for Khmer language - * - */ - -#ifndef __KHMERREORDERING_H -#define __KHMERREORDERING_H - -/** - * \file - * \internal - */ - -#include "LETypes.h" -#include "OpenTypeTables.h" - -U_NAMESPACE_BEGIN - -class LEGlyphStorage; - -// Vocabulary -// Base -> A consonant or an independent vowel in its full (not subscript) form. It is the -// center of the syllable, it can be souranded by coeng (subscript) consonants, vowels, -// split vowels, signs... but there is only one base in a syllable, it has to be coded as -// the first character of the syllable. -// split vowel --> vowel that has two parts placed separately (e.g. Before and after the consonant). -// Khmer language has five of them. Khmer split vowels either have one part before the -// base and one after the base or they have a part before the base and a part above the base. -// The first part of all Khmer split vowels is the same character, identical to -// the glyph of Khmer dependent vowel SRA EI -// coeng --> modifier used in Khmer to construct coeng (subscript) consonants -// Differently than indian languages, the coeng modifies the consonant that follows it, -// not the one preceding it Each consonant has two forms, the base form and the subscript form -// the base form is the normal one (using the consonants code-point), the subscript form is -// displayed when the combination coeng + consonant is encountered. -// Consonant of type 1 -> A consonant which has subscript for that only occupies space under a base consonant -// Consonant of type 2.-> Its subscript form occupies space under and before the base (only one, RO) -// Consonant of Type 3 -> Its subscript form occupies space under and after the base (KHO, CHHO, THHO, BA, YO, SA) -// Consonant shifter -> Khmer has to series of consonants. The same dependent vowel has different sounds -// if it is attached to a consonant of the first series or a consonant of the second series -// Most consonants have an equivalent in the other series, but some of theme exist only in -// one series (for example SA). If we want to use the consonant SA with a vowel sound that -// can only be done with a vowel sound that corresponds to a vowel accompanying a consonant -// of the other series, then we need to use a consonant shifter: TRIISAP or MUSIKATOAN -// x17C9 y x17CA. TRIISAP changes a first series consonant to second series sound and -// MUSIKATOAN a second series consonant to have a first series vowel sound. -// Consonant shifter are both normally supercript marks, but, when they are followed by a -// superscript, they change shape and take the form of subscript dependent vowel SRA U. -// If they are in the same syllable as a coeng consonant, Unicode 3.0 says that they -// should be typed before the coeng. Unicode 4.0 breaks the standard and says that it should -// be placed after the coeng consonant. -// Dependent vowel -> In khmer dependent vowels can be placed above, below, before or after the base -// Each vowel has its own position. Only one vowel per syllable is allowed. -// Signs -> Khmer has above signs and post signs. Only one above sign and/or one post sign are -// Allowed in a syllable. -// -// - -struct KhmerClassTable // This list must include all types of components that can be used inside a syllable -{ - enum CharClassValues // order is important here! This order must be the same that is found in each horizontal - // line in the statetable for Khmer (file KhmerReordering.cpp). - { - CC_RESERVED = 0, - CC_CONSONANT = 1, // consonant of type 1 or independent vowel - CC_CONSONANT2 = 2, // Consonant of type 2 - CC_CONSONANT3 = 3, // Consonant of type 3 - CC_ZERO_WIDTH_NJ_MARK = 4, // Zero Width non joiner character (0x200C) - CC_CONSONANT_SHIFTER = 5, - CC_ROBAT = 6, // Khmer special diacritic accent -treated differently in state table - CC_COENG = 7, // Subscript consonant combining character - CC_DEPENDENT_VOWEL = 8, - CC_SIGN_ABOVE = 9, - CC_SIGN_AFTER = 10, - CC_ZERO_WIDTH_J_MARK = 11, // Zero width joiner character - CC_COUNT = 12 // This is the number of character classes - }; - - enum CharClassFlags - { - CF_CLASS_MASK = 0x0000FFFF, - - CF_CONSONANT = 0x01000000, // flag to speed up comparing - CF_SPLIT_VOWEL = 0x02000000, // flag for a split vowel -> the first part is added in front of the syllable - CF_DOTTED_CIRCLE = 0x04000000, // add a dotted circle if a character with this flag is the first in a syllable - CF_COENG = 0x08000000, // flag to speed up comparing - CF_SHIFTER = 0x10000000, // flag to speed up comparing - CF_ABOVE_VOWEL = 0x20000000, // flag to speed up comparing - - // position flags - CF_POS_BEFORE = 0x00080000, - CF_POS_BELOW = 0x00040000, - CF_POS_ABOVE = 0x00020000, - CF_POS_AFTER = 0x00010000, - CF_POS_MASK = 0x000f0000 - }; - - typedef le_uint32 CharClass; - - typedef le_int32 ScriptFlags; - - LEUnicode firstChar; // for Khmer this will become x1780 - LEUnicode lastChar; // and this x17DF - const CharClass *classTable; - - CharClass getCharClass(LEUnicode ch) const; - - static const KhmerClassTable *getKhmerClassTable(); -}; - - -class KhmerReordering /* not : public UObject because all methods are static */ { -public: - static le_int32 reorder(const LEUnicode *theChars, le_int32 charCount, le_int32 scriptCode, - LEUnicode *outChars, LEGlyphStorage &glyphStorage); - - static const FeatureMap *getFeatureMap(le_int32 &count); - -private: - // do not instantiate - KhmerReordering(); - - static le_int32 findSyllable(const KhmerClassTable *classTable, const LEUnicode *chars, le_int32 prev, le_int32 charCount); - -}; - - -U_NAMESPACE_END -#endif |