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annotate logging.c @ 191:0fed60877099

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Allow to write log to file specified in configuration file
author Daniele Nicolodi <daniele.nicolodi@obspm.fr>
date Mon, 31 Mar 2014 17:03:31 +0200
parents 97112b45b838
children 111610d871af
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1 #include <ansi_c.h>
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2 #include <inifile.h>
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3 #include <lowlvlio.h>
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4
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5 #include "config.h"
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6 #include "logging.h"
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7
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8 /* this refers to the event time defined as a global variable in the main program */
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9 extern double utc;
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10
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11
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12 int __logger_init(struct logger *l)
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13 {
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14 int rv, panel;
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15 char path[MAX_PATHNAME_LEN], *filename;
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16
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17 l->fd = -1;
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18
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19 panel = LoadPanel(0, "FXAnalyse.uir", LOGGING);
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20 if (panel < 0)
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21 return -1;
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22 l->panel = panel;
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23
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24 /* configuration file path */
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25 GetIniFilePath(path);
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26
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27 /* load configuration file */
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28 IniText configuration = Ini_New(TRUE);
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29 Ini_ReadFromFile(configuration, path);
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30
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31 /* logging file name */
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32 rv = Ini_GetStringCopy(configuration, "logging", "filename", &filename);
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33 if (rv > 0)
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34 l->fd = open(filename, O_CREAT|O_WRONLY|O_APPEND, 00744);
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35
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36 free(filename);
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37 Ini_Dispose(configuration);
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38
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39 return 0;
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40 }
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41
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42
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43 void __logmessage(struct logger *l, enum loglevel level, const char *frmt, ...)
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44 {
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45 static const char *levels[] = {
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46 "DEBUG",
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47 "INFO",
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48 "WARNING",
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49 "ERROR",
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50 };
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51
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52 char msg[1024];
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53 int len = 0;
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54
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55 /* timestamp */
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56 len += sprintf(msg, "%014.3f ", utc);
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57 time_t now = time(NULL);
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58 struct tm *t = localtime(&now);
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59 len += strftime(msg + len, sizeof(msg) - len, "%d-%m-%Y %H:%M:%S ", t);
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60
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61 /* level */
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62 len += snprintf(msg + len, sizeof(msg) - len, "%s: ", levels[level]);
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63
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64 /* message */
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65 va_list args;
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66 va_start(args, frmt);
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67 len += vsnprintf(msg + len, sizeof(msg) - len, frmt, args);
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68 va_end(args);
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69
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70 /* newline */
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71 len = MIN(len, sizeof(msg) - 3);
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72 msg[len++] = '\r';
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73 msg[len++] = '\n';
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74
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75 /* string terminator */
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76 msg[len] = '\0';
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78 /* display message */
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79 SetCtrlVal(l->panel, LOGGING_LOGGING, msg);
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81 /* write to log file */
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82 if (l->fd >= 0)
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83 write(l->fd, msg, len);
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84 }