83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
// © 2017 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
#if !UCONFIG_NO_FORMATTING && !UPRV_INCOMPLETE_CPP11_SUPPORT
|
|
|
|
#include "unicode/numberformatter.h"
|
|
#include "number_types.h"
|
|
#include "number_stringbuilder.h"
|
|
|
|
using namespace icu::number::impl;
|
|
|
|
namespace {
|
|
|
|
int32_t
|
|
addPaddingHelper(UChar32 paddingCp, int32_t requiredPadding, NumberStringBuilder &string, int32_t index,
|
|
UErrorCode &status) {
|
|
for (int32_t i = 0; i < requiredPadding; i++) {
|
|
// TODO: If appending to the end, this will cause actual insertion operations. Improve.
|
|
string.insertCodePoint(index, paddingCp, UNUM_FIELD_COUNT, status);
|
|
}
|
|
return U16_LENGTH(paddingCp) * requiredPadding;
|
|
}
|
|
|
|
}
|
|
|
|
Padder::Padder(UChar32 cp, int32_t width, UNumberFormatPadPosition position) : fWidth(width) {
|
|
fUnion.padding.fCp = cp;
|
|
fUnion.padding.fPosition = position;
|
|
}
|
|
|
|
Padder::Padder(int32_t width) : fWidth(width) {}
|
|
|
|
Padder Padder::none() {
|
|
return {-1};
|
|
}
|
|
|
|
Padder Padder::codePoints(UChar32 cp, int32_t targetWidth, UNumberFormatPadPosition position) {
|
|
// TODO: Validate the code point?
|
|
if (targetWidth >= 0) {
|
|
return {cp, targetWidth, position};
|
|
} else {
|
|
return {U_NUMBER_PADDING_WIDTH_OUT_OF_RANGE_ERROR};
|
|
}
|
|
}
|
|
|
|
int32_t Padder::padAndApply(const Modifier &mod1, const Modifier &mod2,
|
|
NumberStringBuilder &string, int32_t leftIndex, int32_t rightIndex,
|
|
UErrorCode &status) const {
|
|
int32_t modLength = mod1.getCodePointCount(status) + mod2.getCodePointCount(status);
|
|
int32_t requiredPadding = fWidth - modLength - string.codePointCount();
|
|
U_ASSERT(leftIndex == 0 &&
|
|
rightIndex == string.length()); // fix the previous line to remove this assertion
|
|
|
|
int length = 0;
|
|
if (requiredPadding <= 0) {
|
|
// Padding is not required.
|
|
length += mod1.apply(string, leftIndex, rightIndex, status);
|
|
length += mod2.apply(string, leftIndex, rightIndex + length, status);
|
|
return length;
|
|
}
|
|
|
|
PadPosition position = fUnion.padding.fPosition;
|
|
UChar32 paddingCp = fUnion.padding.fCp;
|
|
if (position == UNUM_PAD_AFTER_PREFIX) {
|
|
length += addPaddingHelper(paddingCp, requiredPadding, string, leftIndex, status);
|
|
} else if (position == UNUM_PAD_BEFORE_SUFFIX) {
|
|
length += addPaddingHelper(paddingCp, requiredPadding, string, rightIndex + length, status);
|
|
}
|
|
length += mod1.apply(string, leftIndex, rightIndex + length, status);
|
|
length += mod2.apply(string, leftIndex, rightIndex + length, status);
|
|
if (position == UNUM_PAD_BEFORE_PREFIX) {
|
|
length += addPaddingHelper(paddingCp, requiredPadding, string, leftIndex, status);
|
|
} else if (position == UNUM_PAD_AFTER_SUFFIX) {
|
|
length += addPaddingHelper(paddingCp, requiredPadding, string, rightIndex + length, status);
|
|
}
|
|
|
|
return length;
|
|
}
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|