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/*
* Copyright (C) 2012 Patrick Gansterer <paroga@paroga.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DateConversion.h"
#include "JSDateMath.h"
#include <wtf/Assertions.h>
#include <wtf/DateMath.h>
#include <wtf/text/StringBuilder.h>
#include <wtf/text/WTFString.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
template<int width>
static inline void appendNumber(StringBuilder& builder, int value)
{
if (value < 0) {
builder.append('-');
value = -value;
}
String valueString = String::number(value);
int fillingZerosCount = width - valueString.length();
for (int i = 0; i < fillingZerosCount; ++i)
builder.append('0');
builder.append(valueString);
}
template<>
void appendNumber<2>(StringBuilder& builder, int value)
{
ASSERT(0 <= value && value <= 99);
builder.append(static_cast<char>('0' + value / 10));
builder.append(static_cast<char>('0' + value % 10));
}
String formatDateTime(const GregorianDateTime& t, DateTimeFormat format, bool asUTCVariant, DateCache& dateCache)
{
bool appendDate = format & DateTimeFormatDate;
bool appendTime = format & DateTimeFormatTime;
StringBuilder builder;
if (appendDate) {
builder.append(WTF::weekdayName[(t.weekDay() + 6) % 7]);
if (asUTCVariant) {
builder.append(", "_s);
appendNumber<2>(builder, t.monthDay());
builder.append(' ', WTF::monthName[t.month()]);
} else {
builder.append(' ', WTF::monthName[t.month()], ' ');
appendNumber<2>(builder, t.monthDay());
}
builder.append(' ');
appendNumber<4>(builder, t.year());
}
if (appendDate && appendTime)
builder.append(' ');
if (appendTime) {
appendNumber<2>(builder, t.hour());
builder.append(':');
appendNumber<2>(builder, t.minute());
builder.append(':');
appendNumber<2>(builder, t.second());
builder.append(" GMT"_s);
if (!asUTCVariant) {
int offset = std::abs(t.utcOffsetInMinute());
builder.append(t.utcOffsetInMinute() < 0 ? '-' : '+');
appendNumber<2>(builder, offset / 60);
appendNumber<2>(builder, offset % 60);
String timeZoneName = dateCache.timeZoneDisplayName(t.isDST());
if (!timeZoneName.isEmpty())
builder.append(" ("_s, timeZoneName, ')');
}
}
return builder.toString().impl();
}
} // namespace JSC
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
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