forked from Telodendria/Telodendria
133 lines
4 KiB
C
133 lines
4 KiB
C
/*
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* Copyright (C) 2022-2023 Jordan Bancino <@jordan:bancino.net>
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef TELODENDRIA_LOG_H
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#define TELODENDRIA_LOG_H
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/***
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* @Nm Log
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* @Nd A simple logging framework for logging to multiple destinations.
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* @Dd April 27 2023
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* @Xr Stream
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*
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* .Nm
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* is a simple C logging library that allows for colorful outputs,
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* timestamps, and custom log levels. It also features the ability to
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* have multiple logs open at one time, although Telodendria primarily
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* utilizes the global log. All logs are thread safe.
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*/
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#include <stdio.h>
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#include <stddef.h>
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#include <syslog.h>
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#include <Stream.h>
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#define LOG_FLAG_COLOR (1 << 0)
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#define LOG_FLAG_SYSLOG (1 << 1)
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/**
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* A log is defined as a configuration that describes the properties
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* of the log. This opaque structure can be manipulated by the
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* functions defined in this API.
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*/
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typedef struct LogConfig LogConfig;
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/**
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* Create a new log configuration with sane defaults that can be used
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* immediately with the logging functions.
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*/
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extern LogConfig * LogConfigCreate(void);
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/**
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* Get the global log configuration, creating a new one with
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* .Fn LogConfigCreate
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* if necessary.
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*/
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extern LogConfig * LogConfigGlobal(void);
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/**
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* Free the given log configuration. Note that this does not close the
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* underlying stream associated with the log, if there is one. Also
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* note that to avoid memory leaks, the global log configuration must
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* also be freed, but it cannot be used after it is freed.
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*/
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extern void LogConfigFree(LogConfig *);
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/**
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* Set the current log level on the specified log configuration.
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* This indicates that only messages at or above this level should be
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* logged; all others are silently discarded. The passed log level
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* should be one of the log levels defined by
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* .Xr syslog 3 .
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* Refer to that page for a complete list of acceptable log levels,
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* and note that passing an invalid log level will result in undefined
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* behavior.
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*/
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extern void LogConfigLevelSet(LogConfig *, int);
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/**
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* Cause the log output to be indented two more spaces than it was
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* previously. This can be helpful when generating stack traces or
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* other hierarchical output. This is a simple convenience wrapper
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* around
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* .Fn LogConfigIndentSet .
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*/
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extern void LogConfigIndent(LogConfig *);
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/**
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* Cause the log output to be indented two less spaces than it was
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* previously. This is a simple convenience wrapper around
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* .Fn LogConfigIndentSet .
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*/
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extern void LogConfigUnindent(LogConfig *);
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/**
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* Indent future log output using the specified config by some
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* arbitrary amount.
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*/
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extern void LogConfigIndentSet(LogConfig *, size_t);
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extern void
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LogConfigOutputSet(LogConfig *, Stream *);
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extern void
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LogConfigFlagSet(LogConfig *, int);
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extern void
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LogConfigFlagClear(LogConfig *, int);
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extern void
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LogConfigTimeStampFormatSet(LogConfig *, char *);
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extern void
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Logv(LogConfig *, int, const char *, va_list);
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extern void
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LogTo(LogConfig *, int, const char *,...);
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extern void
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Log(int, const char *,...);
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#endif
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