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 #include "config.h"
32 #include "WebCString.h"
33
34 #include "CString.h"
35 #include "TextEncoding.h"
36
37 #include "WebString.h"
38
39 namespace WebKit {
40
41 class WebCStringPrivate : public WebCore::CStringBuffer {
42 };
43
reset()44 void WebCString::reset()
45 {
46 if (m_private) {
47 m_private->deref();
48 m_private = 0;
49 }
50 }
51
assign(const WebCString & other)52 void WebCString::assign(const WebCString& other)
53 {
54 assign(const_cast<WebCStringPrivate*>(other.m_private));
55 }
56
assign(const char * data,size_t length)57 void WebCString::assign(const char* data, size_t length)
58 {
59 char* newData;
60 RefPtr<WebCore::CStringBuffer> buffer =
61 WebCore::CString::newUninitialized(length, newData).buffer();
62 memcpy(newData, data, length);
63 assign(static_cast<WebCStringPrivate*>(buffer.get()));
64 }
65
length() const66 size_t WebCString::length() const
67 {
68 if (!m_private)
69 return 0;
70 // NOTE: The buffer's length includes the null byte.
71 return const_cast<WebCStringPrivate*>(m_private)->length() - 1;
72 }
73
data() const74 const char* WebCString::data() const
75 {
76 if (!m_private)
77 return 0;
78 return const_cast<WebCStringPrivate*>(m_private)->data();
79 }
80
utf16() const81 WebString WebCString::utf16() const
82 {
83 return WebCore::UTF8Encoding().decode(data(), length());
84 }
85
fromUTF16(const WebUChar * data,size_t length)86 WebCString WebCString::fromUTF16(const WebUChar* data, size_t length)
87 {
88 return WebCore::UTF8Encoding().encode(
89 data, length, WebCore::QuestionMarksForUnencodables);
90 }
91
fromUTF16(const WebUChar * data)92 WebCString WebCString::fromUTF16(const WebUChar* data)
93 {
94 size_t len = 0;
95 while (data[len] != WebUChar(0))
96 len++;
97 return fromUTF16(data, len);
98 }
99
WebCString(const WebCore::CString & s)100 WebCString::WebCString(const WebCore::CString& s)
101 : m_private(static_cast<WebCStringPrivate*>(s.buffer()))
102 {
103 if (m_private)
104 m_private->ref();
105 }
106
operator =(const WebCore::CString & s)107 WebCString& WebCString::operator=(const WebCore::CString& s)
108 {
109 assign(static_cast<WebCStringPrivate*>(s.buffer()));
110 return *this;
111 }
112
operator WebCore::CString() const113 WebCString::operator WebCore::CString() const
114 {
115 return m_private;
116 }
117
assign(WebCStringPrivate * p)118 void WebCString::assign(WebCStringPrivate* p)
119 {
120 // Take care to handle the case where m_private == p
121 if (p)
122 p->ref();
123 if (m_private)
124 m_private->deref();
125 m_private = p;
126 }
127
128 } // namespace WebKit
129