1 | /* |
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2 | * $Id$ |
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3 | * |
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4 | * Code (c)2006 Bruno Cornec <bruno@mondorescue.org> |
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5 | * |
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6 | * Main file of mr_msg : a very small and simple |
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7 | * library for messages management |
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8 | * |
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9 | * Provided under the GPLv2 |
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10 | */ |
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11 | |
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12 | #include <stdio.h> |
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13 | #include <stdarg.h> |
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14 | |
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15 | static int mr_loglevel = 0; |
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16 | static char *mr_logfile = NULL; |
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17 | |
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18 | /* Cleanup function for messages */ |
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19 | void mr_msg_close(void) { |
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20 | free(mr_logfile); |
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21 | mr_logfile = NULL; |
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22 | } |
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23 | |
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24 | /* Initialization function for messages */ |
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25 | void mr_msg_init(const char *configfile, int loglevel) { |
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26 | FILE *fout = NULL; |
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27 | int res = 0; |
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28 | |
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29 | asprintf(&mr_logfile,configfile); |
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30 | if ((fout = fopen(mr_logfile, "w")) == NULL) { |
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31 | fprintf(stderr,"Unable to write to %s\n",mr_logfile); |
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32 | fprintf(stderr,"Logging desactivated\n"); |
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33 | mr_msg_close(); |
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34 | } |
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35 | if ((res = fclose(fout)) != 0) { |
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36 | fprintf(stderr,"Unable to close %s\n",mr_logfile); |
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37 | } |
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38 | mr_loglevel = loglevel; |
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39 | } |
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40 | |
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41 | /* |
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42 | * Function that log a message. Not called directly |
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43 | * but through other functions |
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44 | */ |
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45 | void _mr_msg(int debug, const char *file, const char *function, int line, const char *fmt, va_list args) { |
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46 | |
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47 | int i = 0; |
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48 | int res = 0; |
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49 | FILE *fout = NULL; |
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50 | |
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51 | if (mr_logfile == NULL) { |
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52 | return; |
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53 | } |
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54 | |
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55 | if (debug <= mr_loglevel) { |
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56 | if ((fout = fopen(mr_logfile, "a")) == NULL) { |
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57 | fprintf(stderr,"Unable to append to %s\n",mr_logfile); |
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58 | return; |
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59 | } |
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60 | |
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61 | // add 2 spaces to distinguish log levels |
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62 | if (debug > 0) { |
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63 | for (i = 1; i < debug; i++) |
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64 | fprintf(fout, " "); |
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65 | fprintf(fout, "%s->%s#%d: ", file, function, line); |
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66 | } |
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67 | if (vfprintf(fout, fmt, args) < 0) { |
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68 | fprintf(stderr,"Unable to print to %s\n",mr_logfile); |
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69 | return; |
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70 | } |
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71 | |
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72 | fprintf(fout, "\n"); |
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73 | if ((res = fclose(fout)) != 0) { |
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74 | fprintf(stderr,"Unable to close %s\n",mr_logfile); |
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75 | } |
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76 | } |
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77 | } |
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78 | |
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79 | void mr_msg(int level, const char *fmt, va_list args) { |
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80 | |
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81 | _mr_msg(level, __FILE__, __FUNCTION__, __LINE__, fmt, args); |
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82 | } |
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