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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef WebString_h
#define WebString_h
#include "WebCommon.h"
#if WEBKIT_IMPLEMENTATION
namespace WebCore {
class String;
class AtomicString;
}
#else
#include <base/nullable_string16.h>
#include <base/string16.h>
#endif
namespace WebKit {
class WebCString;
class WebStringPrivate;
// A UTF-16 string container. It is inexpensive to copy a WebString
// object.
//
// WARNING: It is not safe to pass a WebString across threads!!!
//
class WebString {
public:
~WebString() { reset(); }
WebString() : m_private(0) { }
WebString(const WebUChar* data, size_t len) : m_private(0)
{
assign(data, len);
}
WebString(const WebString& s) : m_private(0) { assign(s); }
WebString& operator=(const WebString& s)
{
assign(s);
return *this;
}
WEBKIT_API void reset();
WEBKIT_API void assign(const WebString&);
WEBKIT_API void assign(const WebUChar* data, size_t len);
WEBKIT_API bool equals(const WebString& s) const;
WEBKIT_API size_t length() const;
WEBKIT_API const WebUChar* data() const;
bool isEmpty() const { return !length(); }
bool isNull() const { return !m_private; }
WEBKIT_API WebCString utf8() const;
WEBKIT_API static WebString fromUTF8(const char* data, size_t length);
WEBKIT_API static WebString fromUTF8(const char* data);
template <int N> WebString(const char (&data)[N])
: m_private(0)
{
assign(fromUTF8(data, N - 1));
}
template <int N> WebString& operator=(const char (&data)[N])
{
assign(fromUTF8(data, N - 1));
return *this;
}
#if WEBKIT_IMPLEMENTATION
WebString(const WebCore::String&);
WebString& operator=(const WebCore::String&);
operator WebCore::String() const;
WebString(const WebCore::AtomicString&);
WebString& operator=(const WebCore::AtomicString&);
operator WebCore::AtomicString() const;
#else
WebString(const string16& s) : m_private(0)
{
assign(s.data(), s.length());
}
WebString& operator=(const string16& s)
{
assign(s.data(), s.length());
return *this;
}
operator string16() const
{
size_t len = length();
return len ? string16(data(), len) : string16();
}
WebString(const NullableString16& s) : m_private(0)
{
if (s.is_null())
reset();
else
assign(s.string().data(), s.string().length());
}
WebString& operator=(const NullableString16& s)
{
if (s.is_null())
reset();
else
assign(s.string().data(), s.string().length());
return *this;
}
operator NullableString16() const
{
if (!m_private)
return NullableString16(string16(), true);
size_t len = length();
return NullableString16(len ? string16(data(), len) : string16(), false);
}
template <class UTF8String>
static WebString fromUTF8(const UTF8String& s)
{
return fromUTF8(s.data(), s.length());
}
#endif
private:
void assign(WebStringPrivate*);
WebStringPrivate* m_private;
};
inline bool operator==(const WebString& a, const WebString& b)
{
return a.equals(b);
}
inline bool operator!=(const WebString& a, const WebString& b)
{
return !(a == b);
}
} // namespace WebKit
#endif
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