blob: 5af946255aa32a6db01f9220c03b93550a2f822f [file] [log] [blame]
/*
* Copyright (C) 2004-2019 Apple Inc. All rights reserved.
*
* 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 INC. ``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 INC. OR
* 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 <wtf/text/TextStream.h>
#include <wtf/MathExtras.h>
#include <wtf/text/WTFString.h>
namespace WTF {
static constexpr size_t printBufferSize = 100; // large enough for any integer or floating point value in string format, including trailing null character
static inline bool hasFractions(double val)
{
static constexpr double s_epsilon = 0.0001;
int ival = static_cast<int>(val);
double dval = static_cast<double>(ival);
return fabs(val - dval) > s_epsilon;
}
TextStream& TextStream::operator<<(bool b)
{
return *this << (b ? "1" : "0");
}
TextStream& TextStream::operator<<(int i)
{
m_text.appendNumber(i);
return *this;
}
TextStream& TextStream::operator<<(unsigned i)
{
m_text.appendNumber(i);
return *this;
}
TextStream& TextStream::operator<<(long i)
{
m_text.appendNumber(i);
return *this;
}
TextStream& TextStream::operator<<(unsigned long i)
{
m_text.appendNumber(i);
return *this;
}
TextStream& TextStream::operator<<(long long i)
{
m_text.appendNumber(i);
return *this;
}
TextStream& TextStream::operator<<(unsigned long long i)
{
m_text.appendNumber(i);
return *this;
}
TextStream& TextStream::operator<<(float f)
{
if (m_formattingFlags & Formatting::NumberRespectingIntegers)
return *this << FormatNumberRespectingIntegers(f);
m_text.appendFixedWidthNumber(f, 2);
return *this;
}
TextStream& TextStream::operator<<(double d)
{
if (m_formattingFlags & Formatting::NumberRespectingIntegers)
return *this << FormatNumberRespectingIntegers(d);
m_text.appendFixedWidthNumber(d, 2);
return *this;
}
TextStream& TextStream::operator<<(const char* string)
{
m_text.append(string);
return *this;
}
TextStream& TextStream::operator<<(const void* p)
{
char buffer[printBufferSize];
snprintf(buffer, sizeof(buffer) - 1, "%p", p);
return *this << buffer;
}
TextStream& TextStream::operator<<(const String& string)
{
m_text.append(string);
return *this;
}
TextStream& TextStream::operator<<(const FormatNumberRespectingIntegers& numberToFormat)
{
if (hasFractions(numberToFormat.value)) {
m_text.appendFixedWidthNumber(numberToFormat.value, 2);
return *this;
}
m_text.appendNumber(static_cast<int>(numberToFormat.value));
return *this;
}
String TextStream::release()
{
String result = m_text.toString();
m_text.clear();
return result;
}
void TextStream::startGroup()
{
TextStream& ts = *this;
if (m_multiLineMode) {
ts << "\n";
ts.writeIndent();
ts << "(";
ts.increaseIndent();
} else
ts << " (";
}
void TextStream::endGroup()
{
TextStream& ts = *this;
ts << ")";
if (m_multiLineMode)
ts.decreaseIndent();
}
void TextStream::nextLine()
{
TextStream& ts = *this;
if (m_multiLineMode) {
ts << "\n";
ts.writeIndent();
} else
ts << " ";
}
void TextStream::writeIndent()
{
if (m_multiLineMode)
WTF::writeIndent(*this, m_indent);
}
void writeIndent(TextStream& ts, int indent)
{
for (int i = 0; i < indent; ++i)
ts << " ";
}
}