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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 "platform/text/TextStream.h"
28 
29 #include "platform/geometry/FloatPoint.h"
30 #include "platform/geometry/FloatRect.h"
31 #include "platform/geometry/FloatSize.h"
32 #include "platform/geometry/IntPoint.h"
33 #include "platform/geometry/IntRect.h"
34 #include "wtf/MathExtras.h"
35 #include "wtf/StringExtras.h"
36 #include "wtf/text/WTFString.h"
37 
38 namespace blink {
39 
40 static const size_t printBufferSize = 100; // large enough for any integer or floating point value in string format, including trailing null character
41 
hasFractions(double val)42 static inline bool hasFractions(double val)
43 {
44     static const double s_epsilon = 0.0001;
45     int ival = static_cast<int>(val);
46     double dval = static_cast<double>(ival);
47     return fabs(val - dval) > s_epsilon;
48 }
49 
operator <<(bool b)50 TextStream& TextStream::operator<<(bool b)
51 {
52     return *this << (b ? "1" : "0");
53 }
54 
operator <<(int i)55 TextStream& TextStream::operator<<(int i)
56 {
57     m_text.appendNumber(i);
58     return *this;
59 }
60 
operator <<(unsigned i)61 TextStream& TextStream::operator<<(unsigned i)
62 {
63     m_text.appendNumber(i);
64     return *this;
65 }
66 
operator <<(long i)67 TextStream& TextStream::operator<<(long i)
68 {
69     m_text.appendNumber(i);
70     return *this;
71 }
72 
operator <<(unsigned long i)73 TextStream& TextStream::operator<<(unsigned long i)
74 {
75     m_text.appendNumber(i);
76     return *this;
77 }
78 
operator <<(long long i)79 TextStream& TextStream::operator<<(long long i)
80 {
81     m_text.appendNumber(i);
82     return *this;
83 }
84 
operator <<(unsigned long long i)85 TextStream& TextStream::operator<<(unsigned long long i)
86 {
87     m_text.appendNumber(i);
88     return *this;
89 }
90 
operator <<(float f)91 TextStream& TextStream::operator<<(float f)
92 {
93     m_text.append(String::numberToStringFixedWidth(f, 2));
94     return *this;
95 }
96 
operator <<(double d)97 TextStream& TextStream::operator<<(double d)
98 {
99     m_text.append(String::numberToStringFixedWidth(d, 2));
100     return *this;
101 }
102 
operator <<(const char * string)103 TextStream& TextStream::operator<<(const char* string)
104 {
105     m_text.append(string);
106     return *this;
107 }
108 
operator <<(const void * p)109 TextStream& TextStream::operator<<(const void* p)
110 {
111     char buffer[printBufferSize];
112     snprintf(buffer, sizeof(buffer) - 1, "%p", p);
113     return *this << buffer;
114 }
115 
operator <<(const String & string)116 TextStream& TextStream::operator<<(const String& string)
117 {
118     m_text.append(string);
119     return *this;
120 }
121 
operator <<(const FormatNumberRespectingIntegers & numberToFormat)122 TextStream& TextStream::operator<<(const FormatNumberRespectingIntegers& numberToFormat)
123 {
124     if (hasFractions(numberToFormat.value))
125         return *this << numberToFormat.value;
126 
127     m_text.appendNumber(static_cast<int>(numberToFormat.value));
128     return *this;
129 }
130 
release()131 String TextStream::release()
132 {
133     String result = m_text.toString();
134     m_text.clear();
135     return result;
136 }
137 
operator <<(TextStream & ts,const IntRect & r)138 TextStream& operator<<(TextStream& ts, const IntRect& r)
139 {
140     return ts << "at (" << r.x() << "," << r.y() << ") size " << r.width() << "x" << r.height();
141 }
142 
operator <<(TextStream & ts,const IntPoint & p)143 TextStream& operator<<(TextStream& ts, const IntPoint& p)
144 {
145     return ts << "(" << p.x() << "," << p.y() << ")";
146 }
147 
operator <<(TextStream & ts,const FloatPoint & p)148 TextStream& operator<<(TextStream& ts, const FloatPoint& p)
149 {
150     ts << "(" << TextStream::FormatNumberRespectingIntegers(p.x());
151     ts << "," << TextStream::FormatNumberRespectingIntegers(p.y());
152     ts << ")";
153     return ts;
154 }
155 
operator <<(TextStream & ts,const FloatSize & s)156 TextStream& operator<<(TextStream& ts, const FloatSize& s)
157 {
158     ts << "width=" << TextStream::FormatNumberRespectingIntegers(s.width());
159     ts << " height=" << TextStream::FormatNumberRespectingIntegers(s.height());
160     return ts;
161 }
162 
operator <<(TextStream & ts,const FloatRect & r)163 TextStream& operator<<(TextStream& ts, const FloatRect& r)
164 {
165     ts << "at (" << TextStream::FormatNumberRespectingIntegers(r.x());
166     ts << "," << TextStream::FormatNumberRespectingIntegers(r.y());
167     ts << ") size " << TextStream::FormatNumberRespectingIntegers(r.width());
168     ts << "x" << TextStream::FormatNumberRespectingIntegers(r.height());
169     return ts;
170 }
171 
writeIndent(TextStream & ts,int indent)172 void writeIndent(TextStream& ts, int indent)
173 {
174     for (int i = 0; i != indent; ++i)
175         ts << "  ";
176 }
177 
178 }
179