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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>
Defines
#define log4c_category_define(a_category, a_name)
Typedefs
typedef struct __log4c_category log4c_category_t
Functions
LOG4C_API log4c_category_t * log4c_category_get (const char *a_name)
LOG4C_API int log4c_category_list (log4c_category_t **a_cats, int a_ncats)
LOG4C_API log4c_category_t * log4c_category_new (const char *a_name)
LOG4C_API void log4c_category_delete (log4c_category_t *a_category)
LOG4C_API const char * log4c_category_get_name (const log4c_category_t *a_category)
LOG4C_API struct __log4c_appender * log4c_category_get_appender (const log4c_category_t
*a_category)
LOG4C_API int log4c_category_get_additivity (const log4c_category_t *a_category)
LOG4C_API int log4c_category_get_priority (const log4c_category_t *a_category)
LOG4C_API int log4c_category_get_chainedpriority (const log4c_category_t *a_category)
LOG4C_API struct __log4c_appender * log4c_category_set_appender (log4c_category_t
*a_category, struct __log4c_appender *a_appender)
LOG4C_API int log4c_category_set_priority (log4c_category_t *a_category, int a_priority)
LOG4C_API int log4c_category_set_additivity (log4c_category_t *a_category, int
a_additivity)
LOG4C_API 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.
Define 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.
LOG4C_API 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_API 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'. *
LOG4C_API 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
LOG4C_API struct __log4c_appender* log4c_category_get_appender (const log4c_category_t
*a_category) [read] 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.
LOG4C_API 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.
LOG4C_API 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.
LOG4C_API 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,
inta_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.
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.
LOG4C_API int log4c_category_list (log4c_category_t **a_cats, inta_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,
inta_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, inta_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_API 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.
LOG4C_API 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
LOG4C_API int log4c_category_set_additivity (log4c_category_t *a_category, inta_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
LOG4C_API struct __log4c_appender* log4c_category_set_appender (log4c_category_t *this,
log4c_appender_t *a_appender) [read] 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
LOG4C_API int log4c_category_set_priority (log4c_category_t *a_category, inta_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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