1 /*
2 * Copyright (C) 2010 Company 100, 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 "SharedBuffer.h"
28
29 #include "FileSystem.h"
30
31 #include <fcntl.h>
32 #include <sys/stat.h>
33 #include <unistd.h>
34 #include <wtf/text/CString.h>
35
36 namespace WebCore {
37
createWithContentsOfFile(const String & filePath)38 PassRefPtr<SharedBuffer> SharedBuffer::createWithContentsOfFile(const String& filePath)
39 {
40 if (filePath.isEmpty())
41 return 0;
42
43 CString filename = fileSystemRepresentation(filePath);
44 int fd = open(filename.data(), O_RDONLY);
45 if (fd == -1)
46 return 0;
47
48 struct stat fileStat;
49 if (fstat(fd, &fileStat)) {
50 close(fd);
51 return 0;
52 }
53
54 size_t bytesToRead = fileStat.st_size;
55 if (bytesToRead != fileStat.st_size) {
56 close(fd);
57 return 0;
58 }
59
60 RefPtr<SharedBuffer> result = create();
61 result->m_buffer.grow(bytesToRead);
62
63 size_t totalBytesRead = 0;
64 ssize_t bytesRead;
65 while ((bytesRead = read(fd, result->m_buffer.data() + totalBytesRead, bytesToRead - totalBytesRead)) > 0)
66 totalBytesRead += bytesRead;
67
68 close(fd);
69
70 return totalBytesRead == bytesToRead ? result.release() : 0;
71 }
72
73 } // namespace WebCore
74