ICU 56 update step 1

source/i18n/digitaffixesandpadding.cpp

+/*
+ * 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 */