1 | /* |
2 | * Copyright (c) 2016-2017, Intel Corporation |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions are met: |
6 | * |
7 | * * Redistributions of source code must retain the above copyright notice, |
8 | * this list of conditions and the following disclaimer. |
9 | * * 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 | * * Neither the name of Intel Corporation nor the names of its contributors |
13 | * may be used to endorse or promote products derived from this software |
14 | * without specific prior written permission. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | #ifndef DUMP_UTIL |
30 | #define DUMP_UTIL |
31 | |
32 | #include "noncopyable.h" |
33 | |
34 | #include <cstdio> |
35 | #include <memory> |
36 | #include <string> |
37 | |
38 | namespace ue2 { |
39 | |
40 | /** |
41 | * Same as fopen(), but on error throws an exception rather than returning NULL. |
42 | */ |
43 | FILE *fopen_or_throw(const char *path, const char *mode); |
44 | |
45 | /** |
46 | * \brief Helper class: wraps C stdio FILE* handle and takes care of closing |
47 | * the file on destruction. |
48 | */ |
49 | class StdioFile : noncopyable { |
50 | public: |
51 | StdioFile(const std::string &filename, const char *mode) |
52 | : handle(fopen_or_throw(filename.c_str(), mode), &fclose) {} |
53 | |
54 | // Implicit conversion to FILE* for use by stdio calls. |
55 | operator FILE *() { return handle.get(); } |
56 | |
57 | private: |
58 | std::unique_ptr<FILE, decltype(&fclose)> handle; |
59 | }; |
60 | |
61 | } // namespace ue2 |
62 | |
63 | #endif |
64 | |