1 /*
2  * libjingle
3  * Copyright 2015 Google Inc.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  *  1. Redistributions of source code must retain the above copyright notice,
9  *     this list of conditions and the following disclaimer.
10  *  2. Redistributions in binary form must reproduce the above copyright notice,
11  *     this list of conditions and the following disclaimer in the documentation
12  *     and/or other materials provided with the distribution.
13  *  3. The name of the author may not be used to endorse or promote products
14  *     derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #import <Foundation/Foundation.h>
29 
30 // Subset of rtc::LoggingSeverity.
31 typedef NS_ENUM(NSInteger, RTCLoggingSeverity) {
32   kRTCLoggingSeverityVerbose,
33   kRTCLoggingSeverityInfo,
34   kRTCLoggingSeverityWarning,
35   kRTCLoggingSeverityError,
36 };
37 
38 #if defined(__cplusplus)
39 extern "C" void RTCLogEx(RTCLoggingSeverity severity, NSString* logString);
40 extern "C" void RTCSetMinDebugLogLevel(RTCLoggingSeverity severity);
41 extern "C" NSString* RTCFileName(const char* filePath);
42 #else
43 
44 // Wrapper for C++ LOG(sev) macros.
45 // Logs the log string to the webrtc logstream for the given severity.
46 extern void RTCLogEx(RTCLoggingSeverity severity, NSString* logString);
47 
48 // Wrapper for rtc::LogMessage::LogToDebug.
49 // Sets the minimum severity to be logged to console.
50 extern void RTCSetMinDebugLogLevel(RTCLoggingSeverity severity);
51 
52 // Returns the filename with the path prefix removed.
53 extern NSString* RTCFileName(const char* filePath);
54 
55 #endif
56 
57 // Some convenience macros.
58 
59 #define RTCLogString(format, ...)                    \
60   [NSString stringWithFormat:@"(%@:%d %s): " format, \
61       RTCFileName(__FILE__),                         \
62       __LINE__,                                      \
63       __FUNCTION__,                                  \
64       ##__VA_ARGS__]
65 
66 #define RTCLogFormat(severity, format, ...)                    \
67   do {                                                         \
68     NSString *logString = RTCLogString(format, ##__VA_ARGS__); \
69     RTCLogEx(severity, logString);                             \
70   } while (false)
71 
72 #define RTCLogVerbose(format, ...)                                \
73   RTCLogFormat(kRTCLoggingSeverityVerbose, format, ##__VA_ARGS__) \
74 
75 #define RTCLogInfo(format, ...)                                   \
76   RTCLogFormat(kRTCLoggingSeverityInfo, format, ##__VA_ARGS__)    \
77 
78 #define RTCLogWarning(format, ...)                                \
79   RTCLogFormat(kRTCLoggingSeverityWarning, format, ##__VA_ARGS__) \
80 
81 #define RTCLogError(format, ...)                                  \
82   RTCLogFormat(kRTCLoggingSeverityError, format, ##__VA_ARGS__)   \
83 
84 #if !defined(NDEBUG)
85 #define RTCLogDebug(format, ...) RTCLogInfo(format, ##__VA_ARGS__)
86 #else
87 #define RTCLogDebug(format, ...) \
88   do {                           \
89   } while (false)
90 #endif
91 
92 #define RTCLog(format, ...) RTCLogInfo(format, ##__VA_ARGS__)
93