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      1 /*
      2  * Copyright (C) 2004, 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 "KURL.h"
     28 
     29 #include <wtf/RetainPtr.h>
     30 #include <CoreFoundation/CFURL.h>
     31 
     32 using namespace std;
     33 
     34 namespace WebCore {
     35 
     36 KURL::KURL(CFURLRef url)
     37 {
     38     if (!url) {
     39         parse(0, 0);
     40         return;
     41     }
     42 
     43     CFIndex bytesLength = CFURLGetBytes(url, 0, 0);
     44     Vector<char, 512> buffer(bytesLength + 6); // 5 for "file:", 1 for null character to end C string
     45     char* bytes = &buffer[5];
     46     CFURLGetBytes(url, reinterpret_cast<UInt8*>(bytes), bytesLength);
     47     bytes[bytesLength] = '\0';
     48     if (bytes[0] != '/') {
     49         parse(bytes, 0);
     50         return;
     51     }
     52 
     53     buffer[0] = 'f';
     54     buffer[1] = 'i';
     55     buffer[2] = 'l';
     56     buffer[3] = 'e';
     57     buffer[4] = ':';
     58 
     59     parse(buffer.data(), 0);
     60 }
     61 
     62 CFURLRef KURL::createCFURL() const
     63 {
     64     // FIXME: What should this return for invalid URLs?
     65     // Currently it throws away the high bytes of the characters in the string in that case,
     66     // which is clearly wrong.
     67 
     68     Vector<char, 512> buffer;
     69     copyToBuffer(buffer);
     70 
     71     // NOTE: We use UTF-8 here since this encoding is used when computing strings when returning URL components
     72     // (e.g calls to NSURL -path). However, this function is not tolerant of illegal UTF-8 sequences, which
     73     // could either be a malformed string or bytes in a different encoding, like Shift-JIS, so we fall back
     74     // onto using ISO Latin-1 in those cases.
     75     CFURLRef result = CFURLCreateAbsoluteURLWithBytes(0, reinterpret_cast<const UInt8*>(buffer.data()), buffer.size(), kCFStringEncodingUTF8, 0, true);
     76     if (!result)
     77         result = CFURLCreateAbsoluteURLWithBytes(0, reinterpret_cast<const UInt8*>(buffer.data()), buffer.size(), kCFStringEncodingISOLatin1, 0, true);
     78     return result;
     79 }
     80 
     81 String KURL::fileSystemPath() const
     82 {
     83     RetainPtr<CFURLRef> cfURL(AdoptCF, createCFURL());
     84     if (!cfURL)
     85         return String();
     86 
     87 #if PLATFORM(WIN)
     88     CFURLPathStyle pathStyle = kCFURLWindowsPathStyle;
     89 #else
     90     CFURLPathStyle pathStyle = kCFURLPOSIXPathStyle;
     91 #endif
     92     return RetainPtr<CFStringRef>(AdoptCF, CFURLCopyFileSystemPath(cfURL.get(), pathStyle)).get();
     93 }
     94 
     95 }
     96