flog_output_stdio.c

   1 //! stdio output for Flog
   2
   3 //! @file flog_output_stdio.c
   4 //! @author Nabeel Sowan (nabeel.sowan@vibes.se)
   5 //!
   6 //! When you want flog to write to stdout or stderr
   7
   8
   9 #include "flog_output_stdio.h"
  10
  11 #ifdef FLOG_CONFIG_OUTPUT_STDIO
  12
  13 #include "flog_string.h"
  14 #include <stdlib.h>
  15 #include <stdio.h>
  16
  17
  18 //! Output function for log output to stdout
  19
  20 //! @retval 0 success
  21 int flog_output_stdout(FLOG_T *log,const FLOG_MSG_T *msg)
  22 {
  23         char *str;
  24         if(flog_get_str_message(&str,msg))
  25                 return(-1);
  26         if(fprintf(stdout,str)<0) {
  27                 log->output_error=1;
  28                 free(str);
  29                 flog_print(log->error_log,NULL,FLOG_ERROR,FLOG_MSG_CANNOT_WRITE_TO_STDOUT,NULL);
  30                 return(-2);
  31         }
  32         free(str);
  33         return(0);
  34 }
  35
  36
  37 //! Output function for log output to stderr
  38
  39 //! @retval 0 success
  40 int flog_output_stderr(FLOG_T *log,const FLOG_MSG_T *msg)
  41 {
  42         char *str;
  43         if(flog_get_str_message(&str,msg))
  44                 return(-1);
  45         if(fprintf(stderr,str)<0) {
  46                 log->output_error=1;
  47                 free(str);
  48                 flog_print(log->error_log,NULL,FLOG_ERROR,FLOG_MSG_CANNOT_WRITE_TO_STDERR,NULL);
  49                 return(-2);
  50         }
  51         free(str);
  52         return(0);
  53 }
  54
  55
  56 //! create and return a log that writes to stdout
  57
  58 //! @retval NULL error
  59 FLOG_T * create_flog_output_stdout(const char *name, FLOG_MSG_TYPE_T accepted_msg_type)
  60 {
  61         FLOG_T *p;
  62         if((p=create_flog_t(name,accepted_msg_type))==NULL)
  63                 return(NULL);
  64         p->output_func=flog_output_stdout;
  65         return(p);
  66 }
  67
  68
  69 //! create and return a log that writes to stderr
  70
  71 //! @retval NULL error
  72 FLOG_T * create_flog_output_stderr(const char *name, FLOG_MSG_TYPE_T accepted_msg_type)
  73 {
  74         FLOG_T *p;
  75         if((p=create_flog_t(name,accepted_msg_type))==NULL)
  76                 return(NULL);
  77         p->output_func=flog_output_stderr;
  78         return(p);
  79 }
  80
  81
  82 #endif //FLOG_CONFIG_OUTPUT_STDIO