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1 /* | |
2 * Copyright (C) 2009 Google 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 are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #ifndef WebString_h | |
32 #define WebString_h | |
33 | |
34 #include "WebCommon.h" | |
35 | |
36 #if WEBKIT_IMPLEMENTATION | |
37 namespace WebCore { | |
38 class String; | |
39 class AtomicString; | |
40 } | |
41 #else | |
42 #include <base/nullable_string16.h> | |
43 #include <base/string16.h> | |
44 #endif | |
45 | |
46 namespace WebKit { | |
47 | |
48 class WebCString; | |
49 class WebStringPrivate; | |
50 | |
51 // A UTF-16 string container. It is inexpensive to copy a WebString | |
52 // object. | |
53 // | |
54 // WARNING: It is not safe to pass a WebString across threads!!! | |
55 // | |
56 class WebString { | |
57 public: | |
58 ~WebString() { reset(); } | |
59 | |
60 WebString() : m_private(0) { } | |
61 | |
62 WebString(const WebUChar* data, size_t len) : m_private(0) | |
63 { | |
64 assign(data, len); | |
65 } | |
66 | |
67 WebString(const WebString& s) : m_private(0) { assign(s); } | |
68 | |
69 WebString& operator=(const WebString& s) | |
70 { | |
71 assign(s); | |
72 return *this; | |
73 } | |
74 | |
75 WEBKIT_API void reset(); | |
76 WEBKIT_API void assign(const WebString&); | |
77 WEBKIT_API void assign(const WebUChar* data, size_t len); | |
78 | |
79 WEBKIT_API size_t length() const; | |
80 WEBKIT_API const WebUChar* data() const; | |
81 | |
82 bool isEmpty() const { return !length(); } | |
83 bool isNull() const { return !m_private; } | |
84 | |
85 WEBKIT_API WebCString utf8() const; | |
86 | |
87 WEBKIT_API static WebString fromUTF8(const char* data, size_t length); | |
88 WEBKIT_API static WebString fromUTF8(const char* data); | |
89 | |
90 #if WEBKIT_IMPLEMENTATION | |
91 WebString(const WebCore::String&); | |
92 WebString& operator=(const WebCore::String&); | |
93 operator WebCore::String() const; | |
94 | |
95 WebString(const WebCore::AtomicString&); | |
96 WebString& operator=(const WebCore::AtomicString&); | |
97 operator WebCore::AtomicString() const; | |
98 #else | |
99 WebString(const string16& s) : m_private(0) | |
100 { | |
101 assign(s.data(), s.length()); | |
102 } | |
103 | |
104 WebString& operator=(const string16& s) | |
105 { | |
106 assign(s.data(), s.length()); | |
107 return *this; | |
108 } | |
109 | |
110 operator string16() const | |
111 { | |
112 size_t len = length(); | |
113 return len ? string16(data(), len) : string16(); | |
114 } | |
115 | |
116 WebString(const NullableString16& s) : m_private(0) | |
117 { | |
118 if (s.is_null()) | |
119 assign(0); | |
120 else | |
121 assign(s.string().data(), s.string().length()); | |
122 } | |
123 | |
124 WebString& operator=(const NullableString16& s) | |
125 { | |
126 if (s.is_null()) | |
127 assign(0); | |
128 else | |
129 assign(s.string().data(), s.string().length()); | |
130 return *this; | |
131 } | |
132 | |
133 operator NullableString16() const | |
134 { | |
135 if (!m_private) | |
136 return NullableString16(string16(), true); | |
137 size_t len = length(); | |
138 return NullableString16(len ? string16(data(), len) : string16(), false); | |
139 } | |
140 | |
141 template <class UTF8String> | |
142 static WebString fromUTF8(const UTF8String& s) | |
143 { | |
144 return fromUTF8(s.data(), s.length()); | |
145 } | |
146 #endif | |
147 | |
148 private: | |
149 void assign(WebStringPrivate*); | |
150 WebStringPrivate* m_private; | |
151 }; | |
152 | |
153 } // namespace WebKit | |
154 | |
155 #endif | |
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