зеркало из https://github.com/mozilla/gecko-dev.git
318 строки
9.8 KiB
C++
318 строки
9.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GreekCasing.h"
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#include "nsUnicharUtils.h"
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#include "nsUnicodeProperties.h"
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// Custom uppercase mapping for Greek; see bug 307039 for details
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#define GREEK_LOWER_ALPHA 0x03B1
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#define GREEK_LOWER_ALPHA_TONOS 0x03AC
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#define GREEK_LOWER_ALPHA_OXIA 0x1F71
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#define GREEK_LOWER_EPSILON 0x03B5
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#define GREEK_LOWER_EPSILON_TONOS 0x03AD
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#define GREEK_LOWER_EPSILON_OXIA 0x1F73
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#define GREEK_LOWER_ETA 0x03B7
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#define GREEK_LOWER_ETA_TONOS 0x03AE
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#define GREEK_LOWER_ETA_OXIA 0x1F75
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#define GREEK_LOWER_IOTA 0x03B9
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#define GREEK_LOWER_IOTA_TONOS 0x03AF
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#define GREEK_LOWER_IOTA_OXIA 0x1F77
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#define GREEK_LOWER_IOTA_DIALYTIKA 0x03CA
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#define GREEK_LOWER_IOTA_DIALYTIKA_TONOS 0x0390
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#define GREEK_LOWER_IOTA_DIALYTIKA_OXIA 0x1FD3
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#define GREEK_LOWER_OMICRON 0x03BF
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#define GREEK_LOWER_OMICRON_TONOS 0x03CC
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#define GREEK_LOWER_OMICRON_OXIA 0x1F79
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#define GREEK_LOWER_UPSILON 0x03C5
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#define GREEK_LOWER_UPSILON_TONOS 0x03CD
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#define GREEK_LOWER_UPSILON_OXIA 0x1F7B
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#define GREEK_LOWER_UPSILON_DIALYTIKA 0x03CB
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#define GREEK_LOWER_UPSILON_DIALYTIKA_TONOS 0x03B0
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#define GREEK_LOWER_UPSILON_DIALYTIKA_OXIA 0x1FE3
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#define GREEK_LOWER_OMEGA 0x03C9
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#define GREEK_LOWER_OMEGA_TONOS 0x03CE
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#define GREEK_LOWER_OMEGA_OXIA 0x1F7D
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#define GREEK_UPPER_ALPHA 0x0391
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#define GREEK_UPPER_EPSILON 0x0395
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#define GREEK_UPPER_ETA 0x0397
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#define GREEK_UPPER_IOTA 0x0399
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#define GREEK_UPPER_IOTA_DIALYTIKA 0x03AA
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#define GREEK_UPPER_OMICRON 0x039F
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#define GREEK_UPPER_UPSILON 0x03A5
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#define GREEK_UPPER_UPSILON_DIALYTIKA 0x03AB
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#define GREEK_UPPER_OMEGA 0x03A9
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#define GREEK_UPPER_ALPHA_TONOS 0x0386
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#define GREEK_UPPER_ALPHA_OXIA 0x1FBB
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#define GREEK_UPPER_EPSILON_TONOS 0x0388
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#define GREEK_UPPER_EPSILON_OXIA 0x1FC9
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#define GREEK_UPPER_ETA_TONOS 0x0389
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#define GREEK_UPPER_ETA_OXIA 0x1FCB
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#define GREEK_UPPER_IOTA_TONOS 0x038A
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#define GREEK_UPPER_IOTA_OXIA 0x1FDB
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#define GREEK_UPPER_OMICRON_TONOS 0x038C
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#define GREEK_UPPER_OMICRON_OXIA 0x1FF9
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#define GREEK_UPPER_UPSILON_TONOS 0x038E
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#define GREEK_UPPER_UPSILON_OXIA 0x1FEB
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#define GREEK_UPPER_OMEGA_TONOS 0x038F
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#define GREEK_UPPER_OMEGA_OXIA 0x1FFB
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#define COMBINING_ACUTE_ACCENT 0x0301
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#define COMBINING_DIAERESIS 0x0308
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#define COMBINING_ACUTE_TONE_MARK 0x0341
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#define COMBINING_GREEK_DIALYTIKA_TONOS 0x0344
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namespace mozilla {
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uint32_t
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GreekCasing::UpperCase(uint32_t aCh, GreekCasing::State& aState,
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bool& aMarkEtaPos, bool& aUpdateMarkedEta)
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{
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aMarkEtaPos = false;
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aUpdateMarkedEta = false;
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uint8_t category = unicode::GetGeneralCategory(aCh);
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if (aState == kEtaAccMarked) {
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switch (category) {
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case HB_UNICODE_GENERAL_CATEGORY_LOWERCASE_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_TITLECASE_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_UPPERCASE_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK:
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case HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK:
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case HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK:
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aUpdateMarkedEta = true;
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break;
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default:
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break;
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}
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aState = kEtaAcc;
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}
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switch (aCh) {
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case GREEK_UPPER_ALPHA:
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case GREEK_LOWER_ALPHA:
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aState = kAlpha;
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return GREEK_UPPER_ALPHA;
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case GREEK_UPPER_EPSILON:
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case GREEK_LOWER_EPSILON:
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aState = kEpsilon;
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return GREEK_UPPER_EPSILON;
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case GREEK_UPPER_ETA:
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case GREEK_LOWER_ETA:
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aState = kEta;
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return GREEK_UPPER_ETA;
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case GREEK_UPPER_IOTA:
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aState = kIota;
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return GREEK_UPPER_IOTA;
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case GREEK_UPPER_OMICRON:
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case GREEK_LOWER_OMICRON:
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aState = kOmicron;
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return GREEK_UPPER_OMICRON;
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case GREEK_UPPER_UPSILON:
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switch (aState) {
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case kOmicron:
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aState = kOmicronUpsilon;
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break;
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default:
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aState = kUpsilon;
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break;
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}
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return GREEK_UPPER_UPSILON;
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case GREEK_UPPER_OMEGA:
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case GREEK_LOWER_OMEGA:
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aState = kOmega;
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return GREEK_UPPER_OMEGA;
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// iota and upsilon may be the second vowel of a diphthong
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case GREEK_LOWER_IOTA:
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switch (aState) {
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case kAlphaAcc:
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case kEpsilonAcc:
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case kOmicronAcc:
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case kUpsilonAcc:
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aState = kInWord;
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return GREEK_UPPER_IOTA_DIALYTIKA;
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default:
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break;
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}
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aState = kIota;
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return GREEK_UPPER_IOTA;
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case GREEK_LOWER_UPSILON:
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switch (aState) {
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case kAlphaAcc:
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case kEpsilonAcc:
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case kEtaAcc:
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case kOmicronAcc:
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aState = kInWord;
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return GREEK_UPPER_UPSILON_DIALYTIKA;
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case kOmicron:
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aState = kOmicronUpsilon;
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break;
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default:
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aState = kUpsilon;
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break;
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}
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return GREEK_UPPER_UPSILON;
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case GREEK_UPPER_IOTA_DIALYTIKA:
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case GREEK_LOWER_IOTA_DIALYTIKA:
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case GREEK_UPPER_UPSILON_DIALYTIKA:
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case GREEK_LOWER_UPSILON_DIALYTIKA:
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case COMBINING_DIAERESIS:
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aState = kDiaeresis;
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return ToUpperCase(aCh);
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// remove accent if it follows a vowel or diaeresis,
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// and set appropriate state for diphthong detection
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case COMBINING_ACUTE_ACCENT:
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case COMBINING_ACUTE_TONE_MARK:
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switch (aState) {
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case kAlpha:
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aState = kAlphaAcc;
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return uint32_t(-1); // omit this char from result string
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case kEpsilon:
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aState = kEpsilonAcc;
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return uint32_t(-1);
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case kEta:
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aState = kEtaAcc;
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return uint32_t(-1);
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case kIota:
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aState = kIotaAcc;
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return uint32_t(-1);
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case kOmicron:
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aState = kOmicronAcc;
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return uint32_t(-1);
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case kUpsilon:
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aState = kUpsilonAcc;
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return uint32_t(-1);
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case kOmicronUpsilon:
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aState = kInWord; // this completed a diphthong
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return uint32_t(-1);
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case kOmega:
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aState = kOmegaAcc;
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return uint32_t(-1);
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case kDiaeresis:
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aState = kInWord;
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return uint32_t(-1);
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default:
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break;
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}
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break;
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// combinations with dieresis+accent just strip the accent,
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// and reset to start state (don't form diphthong with following vowel)
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case GREEK_LOWER_IOTA_DIALYTIKA_TONOS:
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case GREEK_LOWER_IOTA_DIALYTIKA_OXIA:
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aState = kInWord;
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return GREEK_UPPER_IOTA_DIALYTIKA;
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case GREEK_LOWER_UPSILON_DIALYTIKA_TONOS:
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case GREEK_LOWER_UPSILON_DIALYTIKA_OXIA:
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aState = kInWord;
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return GREEK_UPPER_UPSILON_DIALYTIKA;
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case COMBINING_GREEK_DIALYTIKA_TONOS:
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aState = kInWord;
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return COMBINING_DIAERESIS;
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// strip accents from vowels, and note the vowel seen so that we can detect
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// diphthongs where diaeresis needs to be added
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case GREEK_LOWER_ALPHA_TONOS:
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case GREEK_LOWER_ALPHA_OXIA:
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case GREEK_UPPER_ALPHA_TONOS:
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case GREEK_UPPER_ALPHA_OXIA:
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aState = kAlphaAcc;
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return GREEK_UPPER_ALPHA;
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case GREEK_LOWER_EPSILON_TONOS:
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case GREEK_LOWER_EPSILON_OXIA:
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case GREEK_UPPER_EPSILON_TONOS:
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case GREEK_UPPER_EPSILON_OXIA:
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aState = kEpsilonAcc;
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return GREEK_UPPER_EPSILON;
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case GREEK_LOWER_ETA_TONOS:
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case GREEK_UPPER_ETA_TONOS:
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if (aState == kStart) {
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aState = kEtaAccMarked;
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aMarkEtaPos = true; // mark in case we need to remove the tonos later
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return GREEK_UPPER_ETA_TONOS; // treat as disjunctive eta for now
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}
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// if not in initial state, fall through to strip the accent
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MOZ_FALLTHROUGH;
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case GREEK_LOWER_ETA_OXIA:
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case GREEK_UPPER_ETA_OXIA:
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aState = kEtaAcc;
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return GREEK_UPPER_ETA;
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case GREEK_LOWER_IOTA_TONOS:
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case GREEK_LOWER_IOTA_OXIA:
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case GREEK_UPPER_IOTA_TONOS:
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case GREEK_UPPER_IOTA_OXIA:
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aState = kIotaAcc;
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return GREEK_UPPER_IOTA;
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case GREEK_LOWER_OMICRON_TONOS:
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case GREEK_LOWER_OMICRON_OXIA:
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case GREEK_UPPER_OMICRON_TONOS:
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case GREEK_UPPER_OMICRON_OXIA:
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aState = kOmicronAcc;
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return GREEK_UPPER_OMICRON;
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case GREEK_LOWER_UPSILON_TONOS:
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case GREEK_LOWER_UPSILON_OXIA:
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case GREEK_UPPER_UPSILON_TONOS:
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case GREEK_UPPER_UPSILON_OXIA:
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switch (aState) {
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case kOmicron:
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aState = kInWord; // this completed a diphthong
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break;
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default:
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aState = kUpsilonAcc;
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break;
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}
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return GREEK_UPPER_UPSILON;
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case GREEK_LOWER_OMEGA_TONOS:
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case GREEK_LOWER_OMEGA_OXIA:
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case GREEK_UPPER_OMEGA_TONOS:
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case GREEK_UPPER_OMEGA_OXIA:
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aState = kOmegaAcc;
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return GREEK_UPPER_OMEGA;
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}
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// all other characters just reset the state to either kStart or kInWord,
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// and use standard mappings
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switch (category) {
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case HB_UNICODE_GENERAL_CATEGORY_LOWERCASE_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_TITLECASE_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_UPPERCASE_LETTER:
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case HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK:
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case HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK:
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case HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK:
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aState = kInWord;
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break;
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default:
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aState = kStart;
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break;
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}
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return ToUpperCase(aCh);
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}
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} // namespace mozilla
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