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: ~WebCString()58 ~WebCString() { reset(); } 59 WebCString()60 WebCString() : m_private(0) { } 61 WebCString(const char * data,size_t len)62 WebCString(const char* data, size_t len) : m_private(0) 63 { 64 assign(data, len); 65 } 66 WebCString(const WebCString & s)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_API int compare(const WebCString& other) const; 79 80 WEBKIT_API void reset(); 81 WEBKIT_API void assign(const WebCString&); 82 WEBKIT_API void assign(const char* data, size_t len); 83 84 WEBKIT_API size_t length() const; 85 WEBKIT_API const char* data() const; 86 isEmpty()87 bool isEmpty() const { return !length(); } isNull()88 bool isNull() const { return !m_private; } 89 90 WEBKIT_API WebString utf16() const; 91 92 WEBKIT_API static WebCString fromUTF16(const WebUChar* data, size_t length); 93 WEBKIT_API static WebCString fromUTF16(const WebUChar* data); 94 95 #if WEBKIT_IMPLEMENTATION 96 WebCString(const WTF::CString&); 97 WebCString& operator=(const WTF::CString&); 98 operator WTF::CString() const; 99 #else WebCString(const std::string & s)100 WebCString(const std::string& s) : m_private(0) 101 { 102 assign(s.data(), s.length()); 103 } 104 105 WebCString& operator=(const std::string& s) 106 { 107 assign(s.data(), s.length()); 108 return *this; 109 } 110 string()111 operator std::string() const 112 { 113 size_t len = length(); 114 return len ? std::string(data(), len) : std::string(); 115 } 116 117 template <class UTF16String> fromUTF16(const UTF16String & s)118 static WebCString fromUTF16(const UTF16String& s) 119 { 120 return fromUTF16(s.data(), s.length()); 121 } 122 #endif 123 124 private: 125 void assign(WebCStringPrivate*); 126 WebCStringPrivate* m_private; 127 }; 128 129 inline bool operator<(const WebCString& a, const WebCString& b) 130 { 131 return a.compare(b) < 0; 132 } 133 134 } // namespace WebKit 135 136 #endif 137