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annotate logging.c @ 248:eaac96094640

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Minor style improvements
author Daniele Nicolodi <daniele.nicolodi@obspm.fr>
date Mon, 04 May 2015 17:46:52 +0200
parents ec81395bf08d
children 307fd62f376d
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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 #include <ansi_c.h>
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5
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6 #include "config.h"
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7 #include "logging.h"
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8
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9 /* this refers to the event time defined as a global variable in the main program */
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10 extern double utc;
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11 /* main panel id */
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12 extern unsigned int MainPanel;
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13
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14
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15 int __logger_init(struct logger *l, void(*onerror)(int, const char *))
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16 {
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17 int rv, panel;
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18 char path[MAX_PATHNAME_LEN], *filename;
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19
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20 l->onerror = onerror;
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21 l->fd = -1;
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22
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23 panel = LoadPanel(0, "FXAnalyse.uir", LOGGING);
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24 if (panel < 0)
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25 return -1;
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26 l->panel = panel;
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27
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28 /* configuration file path */
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29 GetIniFilePath(path);
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30
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31 /* load configuration file */
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32 IniText configuration = Ini_New(TRUE);
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33 Ini_ReadFromFile(configuration, path);
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34
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35 /* logging file name */
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36 rv = Ini_GetStringCopy(configuration, "logging", "filename", &filename);
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37 if (rv > 0) {
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38 __logmessage(l, INFO, "logging to '%s'", filename);
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39 l->fd = open(filename, O_CREAT|O_WRONLY|O_APPEND, 00744);
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40 if (l->fd < 0)
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41 __logmessage(l, ERROR, "open log file %s: %s", filename, strerror(errno));
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42 }
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43
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44 free(filename);
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45 Ini_Dispose(configuration);
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46
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47 return 0;
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48 }
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50
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51 void __logmessage(struct logger *l, enum loglevel level, const char *frmt, ...)
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52 {
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53 static const char *levels[] = {
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54 [ERROR] = "ERROR",
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55 [DEBUG] = "DEBUG",
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56 [INFO] = "INFO",
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57 [WARNING] = "WARNING",
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58 };
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59
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60 char msg[1024];
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61 int len = 0;
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62
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63 /* timestamp */
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64 len += sprintf(msg, "%014.3f ", utc);
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65 time_t now = time(NULL);
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66 struct tm *t = localtime(&now);
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67 len += strftime(msg + len, sizeof(msg) - len, "%d-%m-%Y %H:%M:%S ", t);
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68
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69 /* level */
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70 len += snprintf(msg + len, sizeof(msg) - len, "%s: ", levels[level]);
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71
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72 /* message */
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73 va_list args;
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74 va_start(args, frmt);
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75 len += vsnprintf(msg + len, sizeof(msg) - len, frmt, args);
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76 va_end(args);
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77
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78 /* newline */
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79 len = MIN(len, sizeof(msg) - 3);
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80 msg[len++] = '\r';
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81 msg[len++] = '\n';
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82
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83 /* string terminator */
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84 msg[len] = '\0';
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85
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86 /* display message */
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87 SetCtrlVal(l->panel, LOGGING_LOGGING, msg);
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88
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89 /* report error */
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90 if (level == ERROR)
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91 l->onerror(level, msg);
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92
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93 /* write to log file */
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94 if (l->fd >= 0)
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95 write(l->fd, msg, len);
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96 }