1 // Copyright 2008 Google Inc.
2 // Author: Lincoln Smith
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15
16 #ifndef OPEN_VCDIFF_LOGGING_H_
17 #define OPEN_VCDIFF_LOGGING_H_
18
19 #include <config.h>
20 #include <iostream>
21 #include <vector>
22
23 // Windows API defines ERROR
24 #ifdef ERROR
25 #undef ERROR
26 #endif // ERROR
27
28 namespace open_vcdiff {
29
30 enum LogLevel {
31 INFO,
32 WARNING,
33 ERROR,
34 FATAL
35 };
36
37 #ifndef NDEBUG
38 #define DFATAL FATAL
39 #else // NDEBUG
40 #define DFATAL ERROR
41 #endif // !NDEBUG
42
43 extern bool g_fatal_error_occurred;
44 extern void (*ExitFatal)();
45
LogMessage(LogLevel level,const char * level_name)46 inline std::ostream& LogMessage(LogLevel level, const char* level_name) {
47 if (level == FATAL) {
48 g_fatal_error_occurred = true;
49 }
50 return std::cerr << level_name << ": ";
51 }
52
CheckFatalError()53 inline void CheckFatalError() {
54 if (g_fatal_error_occurred) {
55 g_fatal_error_occurred = false;
56 (*ExitFatal)();
57 }
58 }
59
60 } // namespace open_vcdiff
61
62 #define LOG(level) LogMessage(open_vcdiff::level, #level)
63 #define LOG_ENDL std::endl; \
64 open_vcdiff::CheckFatalError();
65
66 #endif // OPEN_VCDIFF_LOGGING_H_
67