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/*
* Copyright (C) 2015, International Business Machines
* Corporation and others. All Rights Reserved.
*
* file name: digitaffixesandpadding.cpp
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
#include "unicode/plurrule.h"
#include "charstr.h"
#include "digitaffix.h"
#include "digitaffixesandpadding.h"
#include "digitlst.h"
#include "uassert.h"
#include "valueformatter.h"
#include "visibledigits.h"
U_NAMESPACE_BEGIN
UBool
DigitAffixesAndPadding::needsPluralRules() const {
return (
fPositivePrefix.hasMultipleVariants() ||
fPositiveSuffix.hasMultipleVariants() ||
fNegativePrefix.hasMultipleVariants() ||
fNegativeSuffix.hasMultipleVariants());
}
UnicodeString &
DigitAffixesAndPadding::formatInt32(
int32_t value,
const ValueFormatter &formatter,
FieldPositionHandler &handler,
const PluralRules *optPluralRules,
UnicodeString &appendTo,
UErrorCode &status) const {
if (U_FAILURE(status)) {
return appendTo;
}
if (optPluralRules != NULL || fWidth > 0 || !formatter.isFastFormattable(value)) {
VisibleDigitsWithExponent digits;
formatter.toVisibleDigitsWithExponent(
(int64_t) value, digits, status);
return format(
digits,
formatter,
handler,
optPluralRules,
appendTo,
status);
}
UBool bPositive = value >= 0;
const DigitAffix *prefix = bPositive ? &fPositivePrefix.getOtherVariant() : &fNegativePrefix.getOtherVariant();
const DigitAffix *suffix = bPositive ? &fPositiveSuffix.getOtherVariant() : &fNegativeSuffix.getOtherVariant();
if (value < 0) {
value = -value;
}
prefix->format(handler, appendTo);
formatter.formatInt32(value, handler, appendTo);
return suffix->format(handler, appendTo);
}
static UnicodeString &
formatAffix(
const DigitAffix *affix,
FieldPositionHandler &handler,
UnicodeString &appendTo) {
if (affix) {
affix->format(handler, appendTo);
}
return appendTo;
}
static int32_t
countAffixChar32(const DigitAffix *affix) {
if (affix) {
return affix->countChar32();
}
return 0;
}
UnicodeString &
DigitAffixesAndPadding::format(
const VisibleDigitsWithExponent &digits,
const ValueFormatter &formatter,
FieldPositionHandler &handler,
const PluralRules *optPluralRules,
UnicodeString &appendTo,
UErrorCode &status) const {
if (U_FAILURE(status)) {
return appendTo;
}
const DigitAffix *prefix = NULL;
const DigitAffix *suffix = NULL;
if (!digits.isNaN()) {
UBool bPositive = !digits.isNegative();
const PluralAffix *pluralPrefix = bPositive ? &fPositivePrefix : &fNegativePrefix;
const PluralAffix *pluralSuffix = bPositive ? &fPositiveSuffix : &fNegativeSuffix;
if (optPluralRules == NULL || digits.isInfinite()) {
prefix = &pluralPrefix->getOtherVariant();
suffix = &pluralSuffix->getOtherVariant();
} else {
UnicodeString count(optPluralRules->select(digits));
prefix = &pluralPrefix->getByCategory(count);
suffix = &pluralSuffix->getByCategory(count);
}
}
if (fWidth <= 0) {
formatAffix(prefix, handler, appendTo);
formatter.format(digits, handler, appendTo);
return formatAffix(suffix, handler, appendTo);
}
int32_t codePointCount = countAffixChar32(prefix) + formatter.countChar32(digits) + countAffixChar32(suffix);
int32_t paddingCount = fWidth - codePointCount;
switch (fPadPosition) {
case kPadBeforePrefix:
appendPadding(paddingCount, appendTo);
formatAffix(prefix, handler, appendTo);
formatter.format(digits, handler, appendTo);
return formatAffix(suffix, handler, appendTo);
case kPadAfterPrefix:
formatAffix(prefix, handler, appendTo);
appendPadding(paddingCount, appendTo);
formatter.format(digits, handler, appendTo);
return formatAffix(suffix, handler, appendTo);
case kPadBeforeSuffix:
formatAffix(prefix, handler, appendTo);
formatter.format(digits, handler, appendTo);
appendPadding(paddingCount, appendTo);
return formatAffix(suffix, handler, appendTo);
case kPadAfterSuffix:
formatAffix(prefix, handler, appendTo);
formatter.format(digits, handler, appendTo);
formatAffix(suffix, handler, appendTo);
return appendPadding(paddingCount, appendTo);
default:
U_ASSERT(FALSE);
return appendTo;
}
}
UnicodeString &
DigitAffixesAndPadding::format(
DigitList &value,
const ValueFormatter &formatter,
FieldPositionHandler &handler,
const PluralRules *optPluralRules,
UnicodeString &appendTo,
UErrorCode &status) const {
VisibleDigitsWithExponent digits;
formatter.toVisibleDigitsWithExponent(
value, digits, status);
if (U_FAILURE(status)) {
return appendTo;
}
return format(
digits, formatter, handler, optPluralRules, appendTo, status);
}
UnicodeString &
DigitAffixesAndPadding::appendPadding(int32_t paddingCount, UnicodeString &appendTo) const {
for (int32_t i = 0; i < paddingCount; ++i) {
appendTo.append(fPadChar);
}
return appendTo;
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
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