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/* -*- 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) {
return aNumFlag == IBMBIDI_NUMERAL_PERSIANCONTEXT
? NUM_TO_PERSIAN(aChar)
: NUM_TO_HINDI(aChar);
}
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; i < aSize; i++)
aBuffer[i] = HandleNumberInChar(
aBuffer[i], !!(i > 0 ? aBuffer[i - 1] : 0), aNumFlag);
break;
case IBMBIDI_NUMERAL_NOMINAL:
default:
break;
}
return NS_OK;
}
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