Source/WebCore/platform/text/TextStream.cpp

/*
 * Copyright (C) 2004, 2008, 2010 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,
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 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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#include "config.h"
#include "TextStream.h"

#include "FloatPoint.h"
#include "FloatRect.h"
#include "IntPoint.h"
#include "IntRect.h"
#include "LayoutRect.h"
#include "LayoutUnit.h"
#include <wtf/MathExtras.h>
#include <wtf/StringExtras.h>
#include <wtf/text/WTFString.h>

namespace WebCore {

static const 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 const 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)
{
    m_text.append(String::numberToStringFixedWidth(f, 2));
    return *this;
}

TextStream& TextStream::operator<<(double d)
{
    m_text.append(String::numberToStringFixedWidth(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))
        return *this << numberToFormat.value;

    m_text.appendNumber(static_cast<int>(numberToFormat.value));
    return *this;
}

TextStream& TextStream::operator<<(const IntPoint& p)
{
    return *this << "(" << p.x() << "," << p.y() << ")";
}

TextStream& TextStream::operator<<(const IntRect& r)
{
    return *this  << "at (" << r.x() << "," << r.y() << ") size " << r.width() << "x" << r.height();
}

TextStream& TextStream::operator<<(const FloatPoint& p)
{
    return *this << "(" << TextStream::FormatNumberRespectingIntegers(p.x())
        << "," << TextStream::FormatNumberRespectingIntegers(p.y()) << ")";
}

TextStream& TextStream::operator<<(const FloatSize& s)
{
    return *this << "width=" << TextStream::FormatNumberRespectingIntegers(s.width())
        << " height=" << TextStream::FormatNumberRespectingIntegers(s.height());
}

TextStream& TextStream::operator<<(const LayoutUnit& v)
{
    return *this << TextStream::FormatNumberRespectingIntegers(v.toFloat());
}

TextStream& TextStream::operator<<(const LayoutPoint& p)
{
    // FIXME: These should be printed as floats. Keeping them ints for consistency with pervious test expectations.
    return *this << "(" << p.x().toInt() << "," << p.y().toInt() << ")";
}

TextStream& TextStream::operator<<(const LayoutRect& r)
{
    // FIXME: These should be printed as floats. Keeping them ints for consistency with previous test expectations.
    return *this << pixelSnappedIntRect(r);
}

String TextStream::release()
{
    String result = m_text.toString();
    m_text.clear();
    return result;
}

void writeIndent(TextStream& ts, int indent)
{
    for (int i = 0; i != indent; ++i)
        ts << "  ";
}

}