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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 WebCString_h |
| 32 | +#define WebCString_h |
| 33 | + |
| 34 | +#include "WebCommon.h" |
| 35 | + |
| 36 | +#if WEBKIT_IMPLEMENTATION |
| 37 | +#include <wtf/Forward.h> |
| 38 | +#else |
| 39 | +#include <string> |
| 40 | +#endif |
| 41 | + |
| 42 | +namespace WTF { |
| 43 | +class CString; |
| 44 | +} |
| 45 | + |
| 46 | +namespace WebKit { |
| 47 | + |
| 48 | +class WebCStringPrivate; |
| 49 | +class WebString; |
| 50 | + |
| 51 | +// A single-byte string container with unspecified encoding. It is |
| 52 | +// inexpensive to copy a WebCString object. |
| 53 | +// |
| 54 | +// WARNING: It is not safe to pass a WebCString across threads!!! |
| 55 | +// |
| 56 | +class WebCString { |
| 57 | +public: |
| 58 | + ~WebCString() { reset(); } |
| 59 | + |
| 60 | + WebCString() : m_private(0) { } |
| 61 | + |
| 62 | + WebCString(const char* data, size_t len) : m_private(0) |
| 63 | + { |
| 64 | + assign(data, len); |
| 65 | + } |
| 66 | + |
| 67 | + WebCString(const WebCString& s) : m_private(0) { assign(s); } |
| 68 | + |
| 69 | + WebCString& operator=(const WebCString& s) |
| 70 | + { |
| 71 | + assign(s); |
| 72 | + return *this; |
| 73 | + } |
| 74 | + |
| 75 | + // Returns 0 if both strings are equals, a value greater than zero if the |
| 76 | + // first character that does not match has a greater value in this string |
| 77 | + // than in |other|, or a value less than zero to indicate the opposite. |
| 78 | + WEBKIT_EXPORT int compare(const WebCString& other) const; |
| 79 | + |
| 80 | + WEBKIT_EXPORT void reset(); |
| 81 | + WEBKIT_EXPORT void assign(const WebCString&); |
| 82 | + WEBKIT_EXPORT void assign(const char* data, size_t len); |
| 83 | + |
| 84 | + WEBKIT_EXPORT size_t length() const; |
| 85 | + WEBKIT_EXPORT const char* data() const; |
| 86 | + |
| 87 | + bool isEmpty() const { return !length(); } |
| 88 | + bool isNull() const { return !m_private; } |
| 89 | + |
| 90 | + WEBKIT_EXPORT WebString utf16() const; |
| 91 | + |
| 92 | +#if WEBKIT_IMPLEMENTATION |
| 93 | + WebCString(const WTF::CString&); |
| 94 | + WebCString& operator=(const WTF::CString&); |
| 95 | + operator WTF::CString() const; |
| 96 | +#else |
| 97 | + WebCString(const std::string& s) : m_private(0) |
| 98 | + { |
| 99 | + assign(s.data(), s.length()); |
| 100 | + } |
| 101 | + |
| 102 | + WebCString& operator=(const std::string& s) |
| 103 | + { |
| 104 | + assign(s.data(), s.length()); |
| 105 | + return *this; |
| 106 | + } |
| 107 | + |
| 108 | + operator std::string() const |
| 109 | + { |
| 110 | + size_t len = length(); |
| 111 | + return len ? std::string(data(), len) : std::string(); |
| 112 | + } |
| 113 | + |
| 114 | + template <class UTF16String> |
| 115 | + static WebCString fromUTF16(const UTF16String& s) |
| 116 | + { |
| 117 | + return fromUTF16(s.data(), s.length()); |
| 118 | + } |
| 119 | +#endif |
| 120 | + |
| 121 | +private: |
| 122 | + void assign(WebCStringPrivate*); |
| 123 | + WebCStringPrivate* m_private; |
| 124 | +}; |
| 125 | + |
| 126 | +inline bool operator<(const WebCString& a, const WebCString& b) |
| 127 | +{ |
| 128 | + return a.compare(b) < 0; |
| 129 | +} |
| 130 | + |
| 131 | +} // namespace WebKit |
| 132 | + |
| 133 | +#endif |
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