exif-log.h File Reference

Log message infrastructure. More...

#include <libexif/exif-mem.h>
#include <stdarg.h>

Go to the source code of this file.

Macros
#define	EXIF_LOG_NO_MEMORY(l, d, s)   exif_log ((l), EXIF_LOG_CODE_NO_MEMORY, (d), "Could not allocate %lu byte(s).", (unsigned long)(s))

Typedefs
typedef struct _ExifLog	ExifLog
	State maintained by the logging interface.
typedef void(*	ExifLogFunc) (ExifLog *log, ExifLogCode, const char *domain, const char *format, va_list args, void *data)
	Log callback function prototype.

Enumerations
enum	ExifLogCode { EXIF_LOG_CODE_NONE , EXIF_LOG_CODE_DEBUG , EXIF_LOG_CODE_NO_MEMORY , EXIF_LOG_CODE_CORRUPT_DATA }

Functions
ExifLog *	exif_log_new (void)
	Create a new logging instance.
ExifLog *	exif_log_new_mem (ExifMem *)
void	exif_log_ref (ExifLog *log)
void	exif_log_unref (ExifLog *log)
void	exif_log_free (ExifLog *log)
	Delete instance of ExifLog.
const char *	exif_log_code_get_title (ExifLogCode code)
	Return a textual description of the given class of error log.
const char *	exif_log_code_get_message (ExifLogCode code)
	Return a verbose description of the given class of error log.
void	exif_log_set_func (ExifLog *log, ExifLogFunc func, void *data)
	Register log callback function.
void	exif_log (ExifLog *log, ExifLogCode, const char *domain, const char *format,...)
void	exif_logv (ExifLog *log, ExifLogCode, const char *domain, const char *format, va_list args)

Detailed Description

Log message infrastructure.

Function Documentation

exif_log_code_get_message()

const char * exif_log_code_get_message

(

ExifLogCode

code

)

Return a verbose description of the given class of error log.

Parameters

[in]

code

logging message class

Returns

verbose description of the log class, or NULL if unknown

exif_log_code_get_title()

const char * exif_log_code_get_title

(

ExifLogCode

code

)

Return a textual description of the given class of error log.

Parameters

[in]

code

logging message class

Returns

textual description of the log class, or NULL if unknown

exif_log_free()

void exif_log_free

(

ExifLog *

log

)

Delete instance of ExifLog.

See also

exif_log_new

Parameters

[in]

log

ExifLog

Returns

new instance of ExifLog

exif_log_new()

ExifLog * exif_log_new

(

void

)

Create a new logging instance.

See also

exif_log_free

Returns

new instance of ExifLog

exif_log_set_func()

void exif_log_set_func	(	ExifLog *	log,
		ExifLogFunc	func,
		void *	data
	)

Register log callback function.

Calls to the log callback function are purely for diagnostic purposes.

Parameters

[in]	log	logging state variable
[in]	func	callback function to set
[in]	data	data to pass into callback function