1 /* 2 * Copyright (C) 2004, 2008, 2010 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "core/platform/text/TextStream.h" 28 29 #include "wtf/MathExtras.h" 30 #include "wtf/StringExtras.h" 31 #include "wtf/text/WTFString.h" 32 33 using namespace std; 34 35 namespace WebCore { 36 37 static const size_t printBufferSize = 100; // large enough for any integer or floating point value in string format, including trailing null character 38 39 static inline bool hasFractions(double val) 40 { 41 static const double s_epsilon = 0.0001; 42 int ival = static_cast<int>(val); 43 double dval = static_cast<double>(ival); 44 return fabs(val - dval) > s_epsilon; 45 } 46 47 TextStream& TextStream::operator<<(bool b) 48 { 49 return *this << (b ? "1" : "0"); 50 } 51 52 TextStream& TextStream::operator<<(int i) 53 { 54 m_text.appendNumber(i); 55 return *this; 56 } 57 58 TextStream& TextStream::operator<<(unsigned i) 59 { 60 m_text.appendNumber(i); 61 return *this; 62 } 63 64 TextStream& TextStream::operator<<(long i) 65 { 66 m_text.appendNumber(i); 67 return *this; 68 } 69 70 TextStream& TextStream::operator<<(unsigned long i) 71 { 72 m_text.appendNumber(i); 73 return *this; 74 } 75 76 TextStream& TextStream::operator<<(long long i) 77 { 78 m_text.appendNumber(i); 79 return *this; 80 } 81 82 TextStream& TextStream::operator<<(unsigned long long i) 83 { 84 m_text.appendNumber(i); 85 return *this; 86 } 87 88 TextStream& TextStream::operator<<(float f) 89 { 90 m_text.append(String::numberToStringFixedWidth(f, 2)); 91 return *this; 92 } 93 94 TextStream& TextStream::operator<<(double d) 95 { 96 m_text.append(String::numberToStringFixedWidth(d, 2)); 97 return *this; 98 } 99 100 TextStream& TextStream::operator<<(const char* string) 101 { 102 m_text.append(string); 103 return *this; 104 } 105 106 TextStream& TextStream::operator<<(const void* p) 107 { 108 char buffer[printBufferSize]; 109 snprintf(buffer, sizeof(buffer) - 1, "%p", p); 110 return *this << buffer; 111 } 112 113 TextStream& TextStream::operator<<(const String& string) 114 { 115 m_text.append(string); 116 return *this; 117 } 118 119 TextStream& TextStream::operator<<(const FormatNumberRespectingIntegers& numberToFormat) 120 { 121 if (hasFractions(numberToFormat.value)) 122 return *this << numberToFormat.value; 123 124 m_text.appendNumber(static_cast<int>(numberToFormat.value)); 125 return *this; 126 } 127 128 String TextStream::release() 129 { 130 String result = m_text.toString(); 131 m_text.clear(); 132 return result; 133 } 134 135 } 136