/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "nsBidiUtils.h" namespace mozilla { static const uint32_t kMinRTLChar = 0x0590; } // namespace mozilla; #define ARABIC_TO_HINDI_DIGIT_INCREMENT (START_HINDI_DIGITS - START_ARABIC_DIGITS) #define PERSIAN_TO_HINDI_DIGIT_INCREMENT (START_HINDI_DIGITS - START_FARSI_DIGITS) #define ARABIC_TO_PERSIAN_DIGIT_INCREMENT (START_FARSI_DIGITS - START_ARABIC_DIGITS) #define NUM_TO_ARABIC(c) \ ((((c)>=START_HINDI_DIGITS) && ((c)<=END_HINDI_DIGITS)) ? \ ((c) - (uint16_t)ARABIC_TO_HINDI_DIGIT_INCREMENT) : \ ((((c)>=START_FARSI_DIGITS) && ((c)<=END_FARSI_DIGITS)) ? \ ((c) - (uint16_t)ARABIC_TO_PERSIAN_DIGIT_INCREMENT) : \ (c))) #define NUM_TO_HINDI(c) \ ((((c)>=START_ARABIC_DIGITS) && ((c)<=END_ARABIC_DIGITS)) ? \ ((c) + (uint16_t)ARABIC_TO_HINDI_DIGIT_INCREMENT): \ ((((c)>=START_FARSI_DIGITS) && ((c)<=END_FARSI_DIGITS)) ? \ ((c) + (uint16_t)PERSIAN_TO_HINDI_DIGIT_INCREMENT) : \ (c))) #define NUM_TO_PERSIAN(c) \ ((((c)>=START_HINDI_DIGITS) && ((c)<=END_HINDI_DIGITS)) ? \ ((c) - (uint16_t)PERSIAN_TO_HINDI_DIGIT_INCREMENT) : \ ((((c)>=START_ARABIC_DIGITS) && ((c)<=END_ARABIC_DIGITS)) ? \ ((c) + (uint16_t)ARABIC_TO_PERSIAN_DIGIT_INCREMENT) : \ (c))) char16_t HandleNumberInChar(char16_t aChar, bool aPrevCharArabic, uint32_t aNumFlag) { // IBMBIDI_NUMERAL_NOMINAL * // IBMBIDI_NUMERAL_REGULAR // IBMBIDI_NUMERAL_HINDICONTEXT // IBMBIDI_NUMERAL_ARABIC // IBMBIDI_NUMERAL_HINDI switch (aNumFlag) { case IBMBIDI_NUMERAL_HINDI: return NUM_TO_HINDI(aChar); case IBMBIDI_NUMERAL_ARABIC: return NUM_TO_ARABIC(aChar); case IBMBIDI_NUMERAL_PERSIAN: return NUM_TO_PERSIAN(aChar); case IBMBIDI_NUMERAL_REGULAR: case IBMBIDI_NUMERAL_HINDICONTEXT: case IBMBIDI_NUMERAL_PERSIANCONTEXT: // for clipboard handling //XXX do we really want to convert numerals when copying text? if (aPrevCharArabic) { if (aNumFlag == IBMBIDI_NUMERAL_PERSIANCONTEXT) return NUM_TO_PERSIAN(aChar); else return NUM_TO_HINDI(aChar); } else return NUM_TO_ARABIC(aChar); case IBMBIDI_NUMERAL_NOMINAL: default: return aChar; } } nsresult HandleNumbers(char16_t* aBuffer, uint32_t aSize, uint32_t aNumFlag) { uint32_t i; switch (aNumFlag) { case IBMBIDI_NUMERAL_HINDI: case IBMBIDI_NUMERAL_ARABIC: case IBMBIDI_NUMERAL_PERSIAN: case IBMBIDI_NUMERAL_REGULAR: case IBMBIDI_NUMERAL_HINDICONTEXT: case IBMBIDI_NUMERAL_PERSIANCONTEXT: for (i=0;i0 ? aBuffer[i-1] : 0), aNumFlag); break; case IBMBIDI_NUMERAL_NOMINAL: default: break; } return NS_OK; } bool HasRTLChars(const char16_t* aText, uint32_t aLength) { // This is used to determine whether a string has right-to-left characters // that mean it will require bidi processing. const char16_t* cp = aText; const char16_t* end = cp + aLength; while (cp < end) { char16_t ch = *cp++; if (ch < mozilla::kMinRTLChar) { continue; } if (UTF16_CODE_UNIT_IS_BIDI(ch) || IsBidiControlRTL(ch)) { return true; } } return false; }