Provided by: liblog4c-doc_1.2.4-3.1build1_all 
NAME
category.h - central class in the log4c package.
SYNOPSIS
#include <stdio.h>
#include <stdarg.h>
#include <log4c/defs.h>
#include <log4c/priority.h>
#include <log4c/location_info.h>
Macros
#define log4c_category_define(a_category, a_name)
Typedefs
typedef struct __log4c_category log4c_category_t
Functions
log4c_category_t * log4c_category_get (const char *a_name)
int log4c_category_list (log4c_category_t **a_cats, int a_ncats)
log4c_category_t * log4c_category_new (const char *a_name)
void log4c_category_delete (log4c_category_t *a_category)
const char * log4c_category_get_name (const log4c_category_t *a_category)
const struct __log4c_appender * log4c_category_get_appender (const log4c_category_t *a_category)
int log4c_category_get_additivity (const log4c_category_t *a_category)
int log4c_category_get_priority (const log4c_category_t *a_category)
int log4c_category_get_chainedpriority (const log4c_category_t *a_category)
const struct __log4c_appender * log4c_category_set_appender (log4c_category_t *a_category, struct
__log4c_appender *a_appender)
int log4c_category_set_priority (log4c_category_t *a_category, int a_priority)
int log4c_category_set_additivity (log4c_category_t *a_category, int a_additivity)
void log4c_category_print (const log4c_category_t *a_category, FILE *a_stream)
static int log4c_category_is_priority_enabled (const log4c_category_t *a_category, int a_priority)
static int log4c_category_is_fatal_enabled (const log4c_category_t *a_category)
static int log4c_category_is_alert_enabled (const log4c_category_t *a_category)
static int log4c_category_is_crit_enabled (const log4c_category_t *a_category)
static int log4c_category_is_error_enabled (const log4c_category_t *a_category)
static int log4c_category_is_warn_enabled (const log4c_category_t *a_category)
static int log4c_category_is_notice_enabled (const log4c_category_t *a_category)
static int log4c_category_is_info_enabled (const log4c_category_t *a_category)
static int log4c_category_is_debug_enabled (const log4c_category_t *a_category)
static int log4c_category_is_trace_enabled (const log4c_category_t *a_category)
static LOG4C_INLINE void log4c_category_log (const log4c_category_t *a_category, int a_priority, const
char *a_format,...)
static LOG4C_INLINE void log4c_category_log_locinfo (const log4c_category_t *a_category, const
log4c_location_info_t *a_locinfo, int a_priority, const char *a_format,...)
static LOG4C_INLINE void log4c_category_fatal (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void log4c_category_alert (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void log4c_category_crit (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void log4c_category_error (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void log4c_category_warn (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void log4c_category_notice (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void log4c_category_info (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void log4c_category_debug (const log4c_category_t *a_category, const char
*a_format,...)
static LOG4C_INLINE void __log4c_category_trace (const log4c_category_t *a_category, const char
*a_format,...)
Detailed Description
central class in the log4c package.
One of the distintive features of log4j (and hence log4c) are hierarchical categories and their
evaluation.
Macro Definition Documentation
#define log4c_category_define(a_category, a_name)
Helper macro to define static categories.
Parameters
a_category the log4c_category_t pointer name
a_name the category name
Typedef Documentation
typedef struct __log4c_category log4c_category_t
log4c category class
Function Documentation
static LOG4C_INLINE void __log4c_category_trace (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with trace priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_TRACE.
static LOG4C_INLINE void log4c_category_alert (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with alert priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_ALERT.
static LOG4C_INLINE void log4c_category_crit (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with crit priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_CRIT.
static LOG4C_INLINE void log4c_category_debug (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with debug priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_DEBUG.
void log4c_category_delete (log4c_category_t * a_category)
Destructor for a log4c_category_t.
Parameters
a_category the log4c_category_t object
static LOG4C_INLINE void log4c_category_error (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with error priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_ERROR.
static LOG4C_INLINE void log4c_category_fatal (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with fatal priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_FATAL.
log4c_category_t * log4c_category_get (const char * a_name)
Instantiate a log4c_category_t with name name. This method does not set priority of the category which is
by default LOG4C_PRIORITY_NOTSET.
Parameters
a_name The name of the category to retrieve.
Bug
the root category name should be '' not 'root'. *
int log4c_category_get_additivity (const log4c_category_t * a_category)
Get the additivity flag for this log4c_category_t..
Parameters
a_category the log4c_category_t object
Returns
the category additivity
const struct __log4c_appender * log4c_category_get_appender (const log4c_category_t * a_category)
Returns the Appender for this log4c_category_t, or NULL if no Appender has been set.
Parameters
a_category the log4c_category_t object
Returns
The Appender.
int log4c_category_get_chainedpriority (const log4c_category_t * a_category)
Starting from this category, search the category hierarchy for a set priority and return it. Otherwise,
return the priority of the root category.
Parameters
a_category the log4c_category_t object
Todo
the log4c_category_t is designed so that this method executes as quickly as possible. It could even
be faster if the set priority was propagated through the children hierarchy of a category.
References LOG4C_PRIORITY_NOTSET, and LOG4C_PRIORITY_UNKNOWN.
const char * log4c_category_get_name (const log4c_category_t * a_category)
Return the category name.
Parameters
a_category the log4c_category_t object
Returns
the category name.
int log4c_category_get_priority (const log4c_category_t * a_category)
Returns the assigned Priority, if any, for this log4c_category_t.
Parameters
a_category the log4c_category_t object
Returns
Priority - the assigned Priority, can be LOG4C_PRIORITY_NOTSET
References LOG4C_PRIORITY_UNKNOWN.
static LOG4C_INLINE void log4c_category_info (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with info priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_INFO.
static int log4c_category_is_alert_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_ALERT.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_ALERT.
static int log4c_category_is_crit_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_CRIT.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_CRIT.
static int log4c_category_is_debug_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_DEBUG.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_DEBUG.
static int log4c_category_is_error_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_ERROR.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_ERROR.
static int log4c_category_is_fatal_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_FATAL.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_FATAL.
static int log4c_category_is_info_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_INFO.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_INFO.
static int log4c_category_is_notice_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_NOTICE.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_NOTICE.
static int log4c_category_is_priority_enabled (const log4c_category_t * a_category, int a_priority) [inline],
[static]
Returns true if the chained priority of the log4c_category_t is equal to or higher than given priority.
Parameters
a_category the log4c_category_t object
a_priority The priority to compare with.
Returns
whether logging is enable for this priority.
References log4c_category_get_chainedpriority().
static int log4c_category_is_trace_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_TRACE.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_TRACE.
static int log4c_category_is_warn_enabled (const log4c_category_t * a_category) [inline], [static]
Return true if the category will log messages with priority LOG4C_PRIORITY_WARN.
Parameters
a_category the log4c_category_t object
Returns
Whether the category will log.
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_WARN.
int log4c_category_list (log4c_category_t ** a_cats, int a_ncats)
Fill in an array with the log4c categories.
Parameters
a_cats array of categories that will be filled
a_ncats number of categories in the array
Returns
-1 if it fails or the number of available categories in log4c.
static LOG4C_INLINE void log4c_category_log (const log4c_category_t * a_category, int a_priority, const char
* a_format, ...) [static]
Log a message with the specified priority.
Parameters
a_category the log4c_category_t object
a_priority The priority of this log message.
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled().
static LOG4C_INLINE void log4c_category_log_locinfo (const log4c_category_t * a_category, const
log4c_location_info_t * a_locinfo, int a_priority, const char * a_format, ...) [static]
Log a message with the specified priority and a user location info.
Parameters
a_category the log4c_category_t object
a_locinfo a user location info
a_priority The priority of this log message.
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled().
log4c_category_t * log4c_category_new (const char * a_name)
Constructor for a log4c_category_t.
Parameters
a_name the category name
Returns
a log4c_category object
Warning
this method should not be called directly. You should use the log4c_category_get() method in order to
preserve the categories hierarchy.
References LOG4C_PRIORITY_NOTSET.
static LOG4C_INLINE void log4c_category_notice (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with notice priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_NOTICE.
void log4c_category_print (const log4c_category_t * a_category, FILE * a_stream)
prints the log4c_category_t object on a stream
Parameters
a_category the log4c_category_t object
a_stream The stream
int log4c_category_set_additivity (log4c_category_t * a_category, int a_additivity)
Sets a new additivity flag for this category.
Parameters
a_category the log4c_category_t object
a_additivity the new category additivity
Returns
the previous category additivity
const struct __log4c_appender * log4c_category_set_appender (log4c_category_t * this, log4c_appender_t *
a_appender)
Sets a new appender for this category.
Parameters
a_category the log4c_category_t object
a_appender the new category appender
Returns
the previous category appender
Todo
need multiple appenders per category
int log4c_category_set_priority (log4c_category_t * a_category, int a_priority)
Sets a new priority of this category.
Parameters
a_category the log4c_category_t object
a_priority the new priority to set. Use LOG4C_PRIORITY_NOTSET to let the category use its parents
priority as effective priority.
Returns
the previous category priority
References LOG4C_PRIORITY_UNKNOWN.
static LOG4C_INLINE void log4c_category_warn (const log4c_category_t * a_category, const char * a_format,
...) [static]
Log a message with warn priority.
Parameters
a_category the log4c_category_t object
a_format Format specifier for the string to write in the log file.
... The arguments for a_format
References log4c_category_is_priority_enabled(), and LOG4C_PRIORITY_WARN.
Author
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log4c Version 1.2.4 category.h(3)