11 /* rudimentary logger; note that this is meant to be a no-brainer to use, so no setup is needed.
13 #define PND_LOG_FORCE (0xFF) /* use this log level to require it be emitted, no skipping */
15 // defaults will have no filtering, so any message will be emitted to all targets
16 // default target is nothing, however, so logger is silent unless activated
17 unsigned char pnd_log ( unsigned char level, char *format, ... ); // returns true if emitted; \n is implied!
18 unsigned char pnd_log_to_stdout ( void ); // same as pnd_log_to_stream ( stdout );
19 unsigned char pnd_log_to_stderr ( void ); // same as pnd_log_to_stream ( stderr );
21 /* the below is all optional, for when you need more control
24 // logging is additive; you can log to multiple targets at once. Returns 'true' if accepted, false if could not set up.
25 void pnd_log_to_nil ( void ); // stop logging to anywhere; does not close streams/etc
26 unsigned char pnd_log_to_stream ( FILE * ); // 'stdout', 'stderr', or your own FILE* are good values
27 unsigned char pnd_log_to_syslog ( char *facility ); // NYI
28 typedef void (*pnd_log_callback_f)( char *text, void *userdata );
29 unsigned char pnd_log_to_callback ( pnd_log_callback_f f, void *userdata ); // NYI
31 // pass NULL to free any pre-text, otherwise it'll be kept. Passed in string is duplicated, so you may free yours if you like.
32 void pnd_log_set_pretext ( char * ); // example: your app-name, or app+function-names, say.
34 // set a 'filter level'; any log message of higher-or-equal level than current filter-level will be emitted. Thus, to remove filters
35 // just set to level 0. Returns existing setting.
36 unsigned char pnd_log_set_filter ( unsigned char newlevel ); // ex: app-specific enum/#defines for your levels
37 unsigned char pnd_log_get_filter ( void );
39 // how many targets can be opened, entirely? this is a compile time limit, for sanity.
40 unsigned char pnd_log_max_targets ( void );