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      1 /*
      2  * Copyright (C) 2006, 2007, 2008 Apple 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "BString.h"
     28 
     29 #include "AtomicString.h"
     30 #include "KURL.h"
     31 #include "PlatformString.h"
     32 #include <tchar.h>
     33 #include <windows.h>
     34 
     35 #if PLATFORM(CF)
     36 #include <CoreFoundation/CoreFoundation.h>
     37 #endif
     38 
     39 using namespace JSC;
     40 
     41 namespace WebCore {
     42 
     43 BString::BString()
     44     : m_bstr(0)
     45 {
     46 }
     47 
     48 BString::BString(const wchar_t* characters)
     49 {
     50     if (!characters)
     51         m_bstr = 0;
     52     else
     53         m_bstr = SysAllocString(characters);
     54 }
     55 
     56 BString::BString(const wchar_t* characters, size_t length)
     57 {
     58     if (!characters)
     59         m_bstr = 0;
     60     else
     61         m_bstr = SysAllocStringLen(characters, length);
     62 }
     63 
     64 BString::BString(const String& s)
     65 {
     66     if (s.isNull())
     67         m_bstr = 0;
     68     else
     69         m_bstr = SysAllocStringLen(s.characters(), s.length());
     70 }
     71 
     72 BString::BString(const KURL& url)
     73 {
     74     if (url.isNull())
     75         m_bstr = 0;
     76     else
     77         m_bstr = SysAllocStringLen(url.string().characters(), url.string().length());
     78 }
     79 
     80 BString::BString(const AtomicString& s)
     81 {
     82     if (s.isNull())
     83         m_bstr = 0;
     84     else
     85         m_bstr = SysAllocStringLen(s.characters(), s.length());
     86 }
     87 
     88 BString::BString(const UString& s)
     89 {
     90     if (s.isNull())
     91         m_bstr = 0;
     92     else
     93         m_bstr = SysAllocStringLen(s.data(), s.size());
     94 }
     95 
     96 #if PLATFORM(CF)
     97 BString::BString(CFStringRef cfstr)
     98     : m_bstr(0)
     99 {
    100     if (!cfstr)
    101         return;
    102 
    103     const UniChar* uniChars = CFStringGetCharactersPtr(cfstr);
    104     if (uniChars) {
    105         m_bstr = SysAllocStringLen((LPCTSTR)uniChars, CFStringGetLength(cfstr));
    106         return;
    107     }
    108 
    109     CFIndex length = CFStringGetLength(cfstr);
    110     m_bstr = SysAllocStringLen(0, length);
    111     CFStringGetCharacters(cfstr, CFRangeMake(0, length), (UniChar*)m_bstr);
    112     m_bstr[length] = 0;
    113 }
    114 #endif
    115 
    116 BString::~BString()
    117 {
    118     SysFreeString(m_bstr);
    119 }
    120 
    121 BString::BString(const BString& other)
    122 {
    123     if (!other.m_bstr)
    124         m_bstr = 0;
    125     else
    126         m_bstr = SysAllocString(other.m_bstr);
    127 }
    128 
    129 void BString::adoptBSTR(BSTR bstr)
    130 {
    131     if (m_bstr)
    132         SysFreeString(m_bstr);
    133     m_bstr = bstr;
    134 }
    135 
    136 BString& BString::operator=(const BString& other)
    137 {
    138     if (this != &other)
    139         *this = other.m_bstr;
    140     return *this;
    141 }
    142 
    143 BString& BString::operator=(const BSTR& other)
    144 {
    145     if (other != m_bstr) {
    146         SysFreeString(m_bstr);
    147         m_bstr = other ? SysAllocString(other) : 0;
    148     }
    149 
    150     return *this;
    151 }
    152 
    153 bool operator ==(const BString& a, const BString& b)
    154 {
    155     if (SysStringLen((BSTR)a) != SysStringLen((BSTR)b))
    156         return false;
    157     if (!(BSTR)a && !(BSTR)b)
    158         return true;
    159     if (!(BSTR)a || !(BSTR)b)
    160         return false;
    161     return !_tcscmp((BSTR)a, (BSTR)b);
    162 }
    163 
    164 bool operator !=(const BString& a, const BString& b)
    165 {
    166     return !(a==b);
    167 }
    168 
    169 bool operator ==(const BString& a, BSTR b)
    170 {
    171     if (SysStringLen((BSTR)a) != SysStringLen(b))
    172         return false;
    173     if (!(BSTR)a && !b)
    174         return true;
    175     if (!(BSTR)a || !b)
    176         return false;
    177     return !_tcscmp((BSTR)a, b);
    178 }
    179 
    180 bool operator !=(const BString& a, BSTR b)
    181 {
    182     return !(a==b);
    183 }
    184 
    185 bool operator ==(BSTR a, const BString& b)
    186 {
    187     if (SysStringLen(a) != SysStringLen((BSTR)b))
    188         return false;
    189     if (!a && !(BSTR)b)
    190         return true;
    191     if (!a || !(BSTR)b)
    192         return false;
    193     return !_tcscmp(a, (BSTR)b);
    194 }
    195 
    196 bool operator !=(BSTR a, const BString& b)
    197 {
    198     return !(a==b);
    199 }
    200 
    201 }
    202