1 /*
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
3 * Copyright (C) 2009 Google Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #include "config.h"
22 #include "WebDOMCString.h"
23
24 #include "TextEncoding.h"
25 #include "WebDOMString.h"
26 #include <wtf/text/CString.h>
27
28 class WebDOMCStringPrivate : public WTF::CStringBuffer {
29 };
30
reset()31 void WebDOMCString::reset()
32 {
33 if (m_private) {
34 m_private->deref();
35 m_private = 0;
36 }
37 }
38
assign(const WebDOMCString & other)39 void WebDOMCString::assign(const WebDOMCString& other)
40 {
41 assign(const_cast<WebDOMCStringPrivate*>(other.m_private));
42 }
43
assign(const char * data,size_t length)44 void WebDOMCString::assign(const char* data, size_t length)
45 {
46 char* newData;
47 RefPtr<WTF::CStringBuffer> buffer =
48 WTF::CString::newUninitialized(length, newData).buffer();
49 memcpy(newData, data, length);
50 assign(static_cast<WebDOMCStringPrivate*>(buffer.get()));
51 }
52
length() const53 size_t WebDOMCString::length() const
54 {
55 if (!m_private)
56 return 0;
57 // NOTE: The buffer's length includes the null byte.
58 return const_cast<WebDOMCStringPrivate*>(m_private)->length() - 1;
59 }
60
data() const61 const char* WebDOMCString::data() const
62 {
63 if (!m_private)
64 return 0;
65 return const_cast<WebDOMCStringPrivate*>(m_private)->data();
66 }
67
utf16() const68 WebDOMString WebDOMCString::utf16() const
69 {
70 return WebCore::UTF8Encoding().decode(data(), length());
71 }
72
fromUTF16(const WebUChar * data,size_t length)73 WebDOMCString WebDOMCString::fromUTF16(const WebUChar* data, size_t length)
74 {
75 return WebCore::UTF8Encoding().encode(
76 data, length, WebCore::QuestionMarksForUnencodables);
77 }
78
fromUTF16(const WebUChar * data)79 WebDOMCString WebDOMCString::fromUTF16(const WebUChar* data)
80 {
81 size_t len = 0;
82 while (data[len] != WebUChar(0))
83 len++;
84 return fromUTF16(data, len);
85 }
86
WebDOMCString(const WTF::CString & s)87 WebDOMCString::WebDOMCString(const WTF::CString& s)
88 : m_private(static_cast<WebDOMCStringPrivate*>(s.buffer()))
89 {
90 if (m_private)
91 m_private->ref();
92 }
93
operator =(const WTF::CString & s)94 WebDOMCString& WebDOMCString::operator=(const WTF::CString& s)
95 {
96 assign(static_cast<WebDOMCStringPrivate*>(s.buffer()));
97 return *this;
98 }
99
operator WTF::CString() const100 WebDOMCString::operator WTF::CString() const
101 {
102 return m_private;
103 }
104
assign(WebDOMCStringPrivate * p)105 void WebDOMCString::assign(WebDOMCStringPrivate* p)
106 {
107 // Take care to handle the case where m_private == p
108 if (p)
109 p->ref();
110 if (m_private)
111 m_private->deref();
112 m_private = p;
113 }
114