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annotate xreport.c @ 0:9dab44dcb331

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Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
author Daniel O'Connor <darius@dons.net.au>
date Tue, 09 Feb 2010 13:44:25 +1030
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children 9da35e705144
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9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
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1 /*
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2 * Report weather conditions to remote web sites.
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3 *
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4 * Greg Lehey, 14 December 2009
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5 *
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6 * $Id: xreport.c,v 1.3 2010/02/07 03:41:35 grog Exp $
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7 */
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8
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9 #include "wh1080.h"
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11 #define STAMPSIZE 32 /* size of time stamp to print out */
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13 struct readings current_readings; /* current data readings, our version */
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14 char reporturl [2048]; /* build up report here */
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15 time_t last_report; /* time of last report */
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17 /*
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18 * Data returned by database query, in the form we want.
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19 */
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20 struct weather_query
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21 {
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22 float inside_humidity;
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23 float inside_temp;
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24 float inside_dewpoint;
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25 float outside_humidity;
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26 float outside_temp;
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27 float outside_dewpoint;
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28 float pressure_msl;
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29 float wind_speed;
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30 float wind_gust;
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31 float wind_direction;
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32 float rain;
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33 } weather_query;
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34
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35 /*
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36 * Update the last report time.
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37 */
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38 void update_lastreport (time_t time)
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39 {
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40 char report_time [STAMPSIZE];
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42 strftime (report_time, /* format time and date */
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43 STAMPSIZE,
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44 "%Y-%m-%d %T",
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45 localtime (&time));
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46 sprintf (mysql_querytext,
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47 "REPLACE INTO lastreport (station_id, report_id, date)\n"
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48 "VALUES (\"%s\", \"Wunderground\", \"%s\")",
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49 config.wunderground_station_id,
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50 report_time );
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51 doquery (mysql_querytext);
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52 }
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53
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54 /*
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55 * Send information to Wunderground.
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56 *
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57 * See http://wiki.wunderground.com/index.php/PWS_-_Upload_Protocol for details
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58 * of communication protocol.
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59 *
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60 * Wunderground requires all values in archaic units, but pressures converted to
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61 * in Hg are converted back about 0.2 hPa too low. We use a different
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62 * definition, which may or may not get the in Hg right, but results in correct
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63 * conversion back to hPa.
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64 *
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65 * Return 0 on success, 1 on failure. Failure will be retried at the next
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66 * reporting interval.
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67 */
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68
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69 int really_inform_wunderground (time_t start, time_t end)
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70 {
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71 /* Care: we can't add start and end, because they'll overflow */
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72 time_t midtime = start / 2 + end / 2; /* average time of the interval */
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73 char dateutc [STAMPSIZE];
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74 int something = 0; /* set when we find something to report */
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75 int i; /* counter */
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76
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77 /* Values to report */
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78 float inside_humidity;
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79 float inside_temp;
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80 #if 0
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81 float inside_dewpoint; /* not currently used */
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82 #endif
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83 float outside_humidity;
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84 float outside_temp;
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85 float outside_dewpoint;
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86 float pressure_msl;
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87 float wind_speed;
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88 float wind_gust;
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89 float wind_direction;
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90 float rain;
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91
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92 sprintf (mysql_querytext,
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93 "SELECT AVG(inside_humidity),\n"
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94 " AVG(inside_temp),\n"
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95 " AVG(inside_dewpoint),\n"
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96 " AVG(outside_humidity),\n"
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97 " AVG(outside_temp),\n"
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98 " AVG(outside_dewpoint),\n"
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99 " AVG(pressure_msl),\n"
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100 " AVG(wind_speed),\n"
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101 " AVG(wind_gust),\n"
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102 " AVG(wind_direction)\n"
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103 "FROM observations\n"
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104 "WHERE unix_timestamp(timestamp(date,time)) >= %d\n"
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105 " AND unix_timestamp(timestamp(date, time)) <= %d\n"
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106 " AND station_id = \"%s\"\n",
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107 start,
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108 end,
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109 config.station_id );
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110
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111 if (doquery (mysql_querytext))
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112 return 1; /* failed and reported */
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113
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114 if (verbose)
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115 {
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116 strftime (dateutc, /* format time and date */
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117 STAMPSIZE,
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118 "%Y-%m-%d %T",
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119 localtime (&start));
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120 printf ("Start date:\t\t%17s\n", dateutc);
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121 strftime (dateutc, /* format time and date */
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122 STAMPSIZE,
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123 "%Y-%m-%d %T",
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124 localtime (&end));
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125 printf ("End date:\t\t%17s\n", dateutc);
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126 }
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127
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128 if (mysql_row = mysql_fetch_row (mysql_result)) /* got something */
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129 {
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130 #if 0
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131 /*
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132 * What a mess! The result of the query in in text form, and we need to convert it to float
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133 * both to reformat it and to convert units.
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134 */
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135 printf ("%s %s %s %s %s %s %s %s %s %s %s\n",
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136 mysql_row [0],
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137 mysql_row [1],
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138 mysql_row [2],
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139 mysql_row [3],
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140 mysql_row [4],
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141 mysql_row [5],
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142 mysql_row [6],
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143 mysql_row [7],
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144 mysql_row [8],
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145 mysql_row [9],
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146 mysql_row [10] );
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147 #endif
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148 /*
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149 * Any of these values may be NULL. If they all are, we don't have any data, so
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150 * wait for some to show up.
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151 */
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152 for (i = 0; i < 11; i++)
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153 if (mysql_row [i])
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154 something = 1;
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155 if (! something) /* nothing to report */
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156 return 1; /* consider a "failure" */
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157
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158 strftime (dateutc, STAMPSIZE, "%F+%H%%3a%M%%3a%S", gmtime (&midtime)); /* format time and date */
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159
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160 /* Start building up the message */
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161 sprintf (reporturl,
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162 "./wundersend "
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163 "'http://weatherstation.wunderground.com/weatherstation/updateweatherstation.php"
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164 "?ID=%s&PASSWORD=%s"
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165 "&dateutc=%s",
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166 config.wunderground_station_id,
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167 config.wunderground_passwd,
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168 dateutc );
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169
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170 /* Now find what we have to report */
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171 if (mysql_row [0])
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172 {
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173 inside_humidity = atof (mysql_row [0]);
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174 if (verbose)
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175 printf ("Inside humidity:\t%4.0f%%\n", inside_humidity);
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176 sprintf (&reporturl [strlen (reporturl)],
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177 "&indoorhumidity=%1.0f",
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178 inside_humidity );
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179 }
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180 if (mysql_row [1])
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181 {
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182 inside_temp = atof (mysql_row [1]);
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183 if (verbose)
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184 printf ("Inside temperature:\t%6.1f°\n", inside_temp);
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185 inside_temp = C_TO_F (inside_temp);
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186 sprintf (&reporturl [strlen (reporturl)],
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187 "&indoortempf=%2.1f",
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188 inside_temp );
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189 }
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190 /* mysql_row [2] is inside dewpoint, which we don't seem to be able to report */
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191 if (mysql_row [3])
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192 {
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193 outside_humidity = atof (mysql_row [3]);
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194 if (verbose)
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195 printf ("Outside humidity:\t%4.0f%%\n", outside_humidity);
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196 sprintf (&reporturl [strlen (reporturl)],
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197 "&humidity=%1.0f",
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198 outside_humidity );
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199 }
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200 if (mysql_row [4])
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201 {
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202 outside_temp = atof (mysql_row [4]);
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203 if (verbose)
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204 printf ("Outside temperature:\t%6.1f°\n", outside_temp);
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205 outside_temp = C_TO_F (atof (mysql_row [4]));
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206 sprintf (&reporturl [strlen (reporturl)],
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207 "&tempf=%2.1f",
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208 outside_temp );
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209 }
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210 if (mysql_row [5])
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211 {
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212 outside_dewpoint = atof (mysql_row [5]);
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213 if (verbose)
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214 printf ("Outside dewpoint:\t%6.1f°\n", outside_dewpoint);
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215 outside_dewpoint = C_TO_F (outside_dewpoint);
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216 sprintf (&reporturl [strlen (reporturl)],
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217 "&dewptf=%2.1f",
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218 outside_dewpoint );
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219 }
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220 if (mysql_row [6])
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221 {
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parents:
diff changeset
222 pressure_msl = atof (mysql_row [6]);
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parents:
diff changeset
223 if (verbose)
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parents:
diff changeset
224 printf ("Sea level pressure:\t%6.1f hPa\n", pressure_msl);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
225 pressure_msl *= Wunder_hPa_TO_inHg;
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parents:
diff changeset
226 sprintf (&reporturl [strlen (reporturl)],
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
227 "&baromin=%4.4f",
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
228 pressure_msl );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
229 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
230 if (mysql_row [7])
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
231 {
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
232 wind_speed = atof (mysql_row [7]);
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parents:
diff changeset
233 if (verbose)
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
234 printf ("Wind speed:\t\t%6.1f km/h\n", wind_speed);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
235 wind_speed *= KM_TO_MILES;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
236 sprintf (&reporturl [strlen (reporturl)],
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parents:
diff changeset
237 "&windspeedmph=%2.1f",
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parents:
diff changeset
238 wind_speed );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
239 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
240 if (mysql_row [8])
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
241 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
242 wind_gust = atof (mysql_row [8]);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
243 if (verbose)
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parents:
diff changeset
244 printf ("Wind gust:\t\t%6.1f km/h\n", wind_gust);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
245 wind_gust *= KM_TO_MILES;
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parents:
diff changeset
246 sprintf (&reporturl [strlen (reporturl)],
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parents:
diff changeset
247 "&windgustmph=%2.1f",
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parents:
diff changeset
248 wind_gust );
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parents:
diff changeset
249 }
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parents:
diff changeset
250 if (mysql_row [9]) /* wind direction */
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parents:
diff changeset
251 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
252 wind_direction = atof (mysql_row [9]);
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parents:
diff changeset
253 if (verbose)
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parents:
diff changeset
254 printf ("Wind dir:\t\t%4.0f°\n", wind_direction);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
255 sprintf (&reporturl [strlen (reporturl)],
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
256 "&winddir=%1.0f",
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parents:
diff changeset
257 wind_direction );
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parents:
diff changeset
258 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
259 mysql_free_result (mysql_result);
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parents:
diff changeset
260
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
261 /*
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
262 * Now do the rain. This is special because it has to be per hour.
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
263 */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
264 start = end - SECSPERHOUR;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
265 sprintf (mysql_querytext,
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parents:
diff changeset
266 "SELECT SUM(rain)\n"
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
267 "FROM observations\n"
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parents:
diff changeset
268 "WHERE unix_timestamp(timestamp(date,time)) >= %d\n"
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
269 " AND unix_timestamp(timestamp(date, time)) <= %d\n"
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parents:
diff changeset
270 " AND station_id = \"%s\"\n",
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
271 start,
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
272 end,
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
273 config.station_id );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
274
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
275 if (doquery (mysql_querytext) == 0) /* succeeded */
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parents:
diff changeset
276 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
277 if ((mysql_row = mysql_fetch_row (mysql_result)) /* got something */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
278 && mysql_row [0] ) /* and it's not NULL, */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
279 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
280 rain = atof (mysql_row [0]);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
281 if (verbose)
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
282 printf ("Rain per hour:\t\t%6.1f mm\n", rain);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
283 rain *= MM_TO_IN;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
284 sprintf (&reporturl [strlen (reporturl)],
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
285 "&rainin=%2.1f",
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
286 rain );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
287 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
288 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
289
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
290 sprintf (&reporturl [strlen (reporturl)],
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
291 "&softwaretype=dereel-weather&action=updateraw'" );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
292 if (verbose)
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
293 printf ("\n"); /* end out output line */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
294 if (debug)
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
295 puts (reporturl);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
296 if (update)
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
297 system (reporturl);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
298 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
299 return 0;
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
300 }
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
301
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
302 void inform_wunderground ()
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
303 {
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
304 time_t now; /* and time now */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
305
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
306 sprintf (mysql_querytext,
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
307 "SELECT unix_timestamp(date) FROM lastreport\n"
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
308 " WHERE station_id =\"%s\"\n"
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
309 " AND report_id = \"Wunderground\"",
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
310 config.wunderground_station_id );
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
311
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
312 if (doquery (mysql_querytext)) /* silently ignore errors */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
313 return;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
314 now = time (NULL);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
315 if (mysql_row = mysql_fetch_row (mysql_result)) /* got something */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
316 last_report = atoi (mysql_row [0]);
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
317 else
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
318 last_report = now - config.wunderground_report_interval;
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
319 mysql_free_result (mysql_result);
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
320
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
321 /*
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
322 * Report in strict intervals.
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
323 */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
324 while ((now - last_report) >= config.wunderground_report_interval)
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
325 {
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
326 if (really_inform_wunderground (last_report, last_report + config.wunderground_report_interval))
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
327 return; /* failure, we'll retry later */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
328 last_report += config.wunderground_report_interval;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
329 update_lastreport (last_report);
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
330 now = time (NULL); /* time moves on */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
331 }
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
332 }
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
333
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334 void usage (char *me)
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335 {
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336 fprintf (stderr,
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337 "Usage: %s [-d] [-n] [-v] [station ID] [db user] [password] [db host] [database]\n",
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338 me);
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339 exit (1);
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340 }
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341
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342 int main (int argc, char *argv [])
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343 {
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344 time_t nextrun;
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345 time_t now;
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346
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347 if (read_config (argc, argv) < 0)
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348 usage (argv [0]);
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349
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350 if (! config.wunderground_station_id)
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351 {
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352 fprintf (stderr, "No wunderground station ID in config\n");
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353 exit (1);
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354 }
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355
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356 while (1)
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357 {
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358 inform_wunderground ();
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359 if (once) /* just run once */
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360 exit (0);
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361 /*
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362 * Informing Wunderground takes finite time. Stay on schedule.
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363 * We may end up off by a second from time to time, but we shouldn't drift.
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364 *
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365 */
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366 nextrun = last_report + config.wunderground_report_interval; /* next time to run */
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367 now = time (NULL);
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368 sleep (nextrun - now);
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369 }
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370 return 0;
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371 }